EP0077130A1 - Vorrichtungen zur Turbulenzerzeugung - Google Patents

Vorrichtungen zur Turbulenzerzeugung Download PDF

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Publication number
EP0077130A1
EP0077130A1 EP82304794A EP82304794A EP0077130A1 EP 0077130 A1 EP0077130 A1 EP 0077130A1 EP 82304794 A EP82304794 A EP 82304794A EP 82304794 A EP82304794 A EP 82304794A EP 0077130 A1 EP0077130 A1 EP 0077130A1
Authority
EP
European Patent Office
Prior art keywords
turbulence inducing
inducing member
turbulence
fluid
pipe
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Withdrawn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
EP82304794A
Other languages
English (en)
French (fr)
Inventor
Ichizo Ohkata
Taira Hama
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.)
Piolax Inc
MIHAMA Manufacturing CO Ltd
Original Assignee
MIHAMA Manufacturing CO Ltd
Kato Hatsujo Inc
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 MIHAMA Manufacturing CO Ltd, Kato Hatsujo Inc filed Critical MIHAMA Manufacturing CO Ltd
Publication of EP0077130A1 publication Critical patent/EP0077130A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F15D1/06—Influencing flow of fluids in pipes or conduits by influencing the boundary layer
    • F15D1/065—Whereby an element is dispersed in a pipe over the whole length or whereby several elements are regularly distributed in a pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4314—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor with helical baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation

Definitions

  • This invention relates to turbulence inducing members for insertion into a pipe for a fluid such as a refrigerant in various kinds of air conditioning systems for inducing turbulence in the flow of the fluid thereby enhancing the heat exchange efficiency
  • French patent no: 77.30460 discloses a plastics turbulence inducing member which is provided with a pair of equal helical ribs and having its maximum outside diameter slightly smaller than the inside diameter of the pipe into which it is to be inserted. Since such a plastics turbulence inducing member is a loose fit in the fluid pipe, it vibrates within the fluid pipe in the direction of fluid flow and/or is rotated around its axis by the flow of the fluid, which leads to a disadvantageous decrease in efficiency in the production of turbulence.
  • the main object of the present invention is to provide a plastics turbulence inducing member which is neither vibrated nor rotated within the fluid pipe by the flow of the fluid, thereby preventing the generation of noise and enhancing the turbulence inducing efficiency.
  • a plastics turbulence inducing member having at least two helical ribs is characterised in that one of the ribs has a radial extent different from that of the other rib or ribs.
  • Figure 1 shows a conventional turbulence inducing member 10 made of a synthetic resin and provided with two helical ribs 12 and 14 which are equal in radial extent.
  • the turbulence inducing member 10 formed by the two ribs 12 and 14 has a maximum diameter which is slightly smaller than the inside diameter of a pipe 16 for fluid so that it may easily be inserted intc the pipe 16.
  • the turbulence inducing member 10 is vibrated in the direction in which the fluid flows and/or rotated around its axis by the flow of the fluid, with the result, that the turbulence induced in the fluid is reduced by the amount of the vibrating movement and/or rotating movement and, at the same time, the vibration and/or rotation of the turbulence inducing member 10 allows the member to rattle against the inner wall of the pipe 16 to thereby make noise.
  • the turbulence inducing member 20 shown in Figures 2 and 3 comprises a shaft portion 22 and two helical ribs 24 and 26 of different radial extents which have curved leading end portions 24a and 26a, with pointed leading edges.
  • the maximum width L of the turbulence inducing member 20 at any point is smaller than the inside diameter of a fluid pipe 30 to be described later.
  • the diameter of a circle P having a radius equal to the distance between the centre of the shaft portion 22 and the outermost edge of the longer helical rib 24 is slightly larger than the inside diameter of the fluid pipe 30.
  • the turbulence iinducing member 20 is easily manufactured" though not illustrated, by rotatably attaching to an extruder a mouthpiece having an outlet of a shape identical with the cross section of the turbulence inducing member, extruding a synthetic resin from the outlet while rotating the mouthpiece, helically twisting the synthetic resin while in a sof tened state between the mouthpiece and a cooling vessel by means of the rotation of the mouthpiece, passing the synthetic resin through water in the cooling vessel, and drawing the synthetic resin from the cooling vessel.
  • the softened synthetic resin may be drawn by rotating the synthetic resin itself with the mouthpiece fixed to the extruder.
  • the curved leading end portion 24a of the helical rib 24 comes into contact with the inner wall of the fluid pipe 30 along its helical pitch.
  • the shaft portion 22 is substantially helically deformed within the fluid pipe 30 as illustrated in Figure 4. Therefore, the deformation of the shaft portion 22 urges the curved leading end portions 24a of the rib 24 to forcibly contact the inner wall of the fluid pipe 30.
  • the turbulence inducing member 20 is thus retained fast wi thin the fluid pipe 30 with the curved leading end portions 24a kept in intimate contact with the inner wall of the fluid pipe 30.
  • the turbulence inducing member 20 is neither vibrated in the direction in which the fluid flows nor rotated about the shaft portion 22.
  • the main part of the fluid within the pipe flows along the radially longer helical rib 24 and the curved surfaces of the curved leading end portions 24a.
  • shorter helical rib 26 and continues to converge upon and diverge from the main fluid flow. Therefore, turbulence is promoted in the fluid.
  • the turbulence inducing member just described has two helical ribs, but the number of ribs is not limited to two.
  • the turbulence inducing member may have three or more helical ribs at least one of which has a radial extent different from that of the remainder.
  • An example of a turbulence inducing member having three helical ribs 24, 26 and 28 is illustrated in Figure 5.
  • a turbulence inducing member according to -the present invention is held fast within the fluid pipe, it is possible to avoid completely either vibration or rotation of the turbulence inducing member within the fluid pipe due to the flow of the fluid and to effectively prevent the generation of noise due to the rattling of the turbulence inducing member against the inner wall of the fluid pipe, with the result that the turbulence efficiency can be kept high. Furthermore, since part of the fluid flow rides over the radially shorter helical rib and continues to converge upon and diverge from the main fluid flow, the turbulence efficiency can be promoted to a major extent. That is to say, the heat exchange efficiency can satisfactorily be enhanced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • Pipe Accessories (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP82304794A 1981-10-13 1982-09-10 Vorrichtungen zur Turbulenzerzeugung Withdrawn EP0077130A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1981151934U JPS5923985Y2 (ja) 1981-10-13 1981-10-13 合成樹脂製乱流子
JP151934/81U 1981-10-13

Publications (1)

Publication Number Publication Date
EP0077130A1 true EP0077130A1 (de) 1983-04-20

Family

ID=15529389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82304794A Withdrawn EP0077130A1 (de) 1981-10-13 1982-09-10 Vorrichtungen zur Turbulenzerzeugung

Country Status (2)

Country Link
EP (1) EP0077130A1 (de)
JP (1) JPS5923985Y2 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257220A1 (de) * 1986-07-31 1988-03-02 Perfils Tecnics, S.A. "Pertecsa" Turbulator für Wärmetauscherröhren
WO2003045280A1 (en) * 2001-11-21 2003-06-05 Tayside Flow Technologies Limited Helical insert for a conduit
DE10206250A1 (de) * 2002-02-15 2003-09-04 Ming-Yu Lai Verbinder für einen Flüssigkeitsbehälter
EP1589274A1 (de) * 2004-04-24 2005-10-26 GM Global Technology Operations, Inc. Strömungsakustisch optimierte Rohrleitungen
EP1589273A1 (de) * 2004-04-24 2005-10-26 GM Global Technology Operations, Inc. Strömungsakustisch optimierte flexible Rohrleitung
CN102670337A (zh) * 2012-05-29 2012-09-19 朱晓义 人体通管及人体通道
CN103203193A (zh) * 2012-01-11 2013-07-17 常州市姚氏铸造材料有限公司 网管式对流接触装置及其对流接触器
EP2114828A4 (de) * 2006-11-07 2014-01-08 Erik Munkholt Soerensen Aps Vorrichtung und verfahren zur behandlung von wasser und anderen flüssigen materialien
US20140191057A1 (en) * 2013-01-07 2014-07-10 1,4 Group, Inc. Thermal fogger for creating stable aerosols
CN107024129A (zh) * 2015-11-17 2017-08-08 川崎重工业株式会社 冷却管单元的制造方法、管内整流用具、冷却管、以及管内整流用具的固定结构
CN107676301A (zh) * 2017-10-18 2018-02-09 朱晓义 一种无叶风扇
US20180099444A1 (en) * 2016-10-06 2018-04-12 Injection Mold Consulting, LLC Injection mold insert
CN111589279A (zh) * 2020-06-08 2020-08-28 福建伊普思实业有限公司 一种冷干机换热器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102628466B (zh) * 2012-04-19 2013-12-18 朱晓义 一种管道
JP2019086180A (ja) * 2017-11-02 2019-06-06 カルソニックカンセイ株式会社 二重管及びその製造方法
KR102134252B1 (ko) * 2018-09-28 2020-07-15 전학송 선회류로 고온가스의 폐열 회수와 유적을 제거할 수 있는 텐터기용 향류 회수장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1425901A (fr) * 1964-03-04 1966-01-24 Brown Finture Company Tube d'échange de chaleur avec dispositif intérieur d'augmentation de turbulence
GB1027933A (en) * 1962-05-02 1966-04-27 English Electric Co Ltd Improvements in and relating to heat exchanger tubes
DE2104219A1 (en) * 1971-01-29 1972-08-10 Zimmer Ag Planung U Bau Von In Pot life sprectrum enhancement - for viscous melts using special stirrers esp for extruded fibre prodn
FR2404511A1 (fr) * 1977-09-29 1979-04-27 Sogex Perfectionnements aux machines realisant l'extrusion continue de profiles en matiere plastique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1027933A (en) * 1962-05-02 1966-04-27 English Electric Co Ltd Improvements in and relating to heat exchanger tubes
FR1425901A (fr) * 1964-03-04 1966-01-24 Brown Finture Company Tube d'échange de chaleur avec dispositif intérieur d'augmentation de turbulence
DE2104219A1 (en) * 1971-01-29 1972-08-10 Zimmer Ag Planung U Bau Von In Pot life sprectrum enhancement - for viscous melts using special stirrers esp for extruded fibre prodn
FR2404511A1 (fr) * 1977-09-29 1979-04-27 Sogex Perfectionnements aux machines realisant l'extrusion continue de profiles en matiere plastique

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257220A1 (de) * 1986-07-31 1988-03-02 Perfils Tecnics, S.A. "Pertecsa" Turbulator für Wärmetauscherröhren
WO2003045280A1 (en) * 2001-11-21 2003-06-05 Tayside Flow Technologies Limited Helical insert for a conduit
WO2003045279A1 (en) * 2001-11-21 2003-06-05 Tayside Flow Technologies Limited A helical formation for a conduit
EP1314406A3 (de) * 2001-11-21 2004-04-21 Tayside Flow Technologies Limited Einsatz für einen Kanal
US7185677B2 (en) 2001-11-21 2007-03-06 Tayside Flow Technologies Limited Helical formation for a conduit
US7331989B2 (en) 2001-11-21 2008-02-19 Tayside Flow Technologies Limited Insert for a conduit
US8021415B2 (en) 2001-11-21 2011-09-20 Tayside Flow Technologies Limited Insert for a conduit
DE10206250A1 (de) * 2002-02-15 2003-09-04 Ming-Yu Lai Verbinder für einen Flüssigkeitsbehälter
DE10206250B4 (de) * 2002-02-15 2004-05-06 Lai, Ming-Yu, Ta-Ya Hsiang Verbinder für einen Flüssigkeitsbehälter
EP1589274A1 (de) * 2004-04-24 2005-10-26 GM Global Technology Operations, Inc. Strömungsakustisch optimierte Rohrleitungen
EP1589273A1 (de) * 2004-04-24 2005-10-26 GM Global Technology Operations, Inc. Strömungsakustisch optimierte flexible Rohrleitung
EP2114828A4 (de) * 2006-11-07 2014-01-08 Erik Munkholt Soerensen Aps Vorrichtung und verfahren zur behandlung von wasser und anderen flüssigen materialien
CN103203193A (zh) * 2012-01-11 2013-07-17 常州市姚氏铸造材料有限公司 网管式对流接触装置及其对流接触器
CN103203193B (zh) * 2012-01-11 2015-09-02 常州市姚氏铸造材料有限公司 网管式对流接触装置及其对流接触器
CN102670337A (zh) * 2012-05-29 2012-09-19 朱晓义 人体通管及人体通道
CN102670337B (zh) * 2012-05-29 2015-03-04 朱晓义 人体通管及人体通道
US20140191057A1 (en) * 2013-01-07 2014-07-10 1,4 Group, Inc. Thermal fogger for creating stable aerosols
US9795976B2 (en) * 2013-01-07 2017-10-24 1,4Group, Inc. Thermal fogger for creating stable aerosols
EP2941319B1 (de) * 2013-01-07 2022-08-17 1,4 Group, Inc. Wärmevernebler zur erzeugung stabiler aerosole
CN107024129A (zh) * 2015-11-17 2017-08-08 川崎重工业株式会社 冷却管单元的制造方法、管内整流用具、冷却管、以及管内整流用具的固定结构
CN107024129B (zh) * 2015-11-17 2020-04-10 川崎重工业株式会社 冷却管、冷却管单元制造方法、管内整流用具及固定结构
US20180099444A1 (en) * 2016-10-06 2018-04-12 Injection Mold Consulting, LLC Injection mold insert
US10688703B2 (en) * 2016-10-06 2020-06-23 Injection Mold Consulting, LLC Injection mold insert
CN107676301A (zh) * 2017-10-18 2018-02-09 朱晓义 一种无叶风扇
CN111589279A (zh) * 2020-06-08 2020-08-28 福建伊普思实业有限公司 一种冷干机换热器

Also Published As

Publication number Publication date
JPS5923985Y2 (ja) 1984-07-16
JPS5858280U (ja) 1983-04-20

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19840319

RIN1 Information on inventor provided before grant (corrected)

Inventor name: OHKATA, ICHIZO

Inventor name: HAMA, TAIRA