EP0995879B1 - Vis transporteuses jumelées - Google Patents

Vis transporteuses jumelées Download PDF

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Publication number
EP0995879B1
EP0995879B1 EP98811063A EP98811063A EP0995879B1 EP 0995879 B1 EP0995879 B1 EP 0995879B1 EP 98811063 A EP98811063 A EP 98811063A EP 98811063 A EP98811063 A EP 98811063A EP 0995879 B1 EP0995879 B1 EP 0995879B1
Authority
EP
European Patent Office
Prior art keywords
circle
pitch
screw
section
rotors
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.)
Expired - Lifetime
Application number
EP98811063A
Other languages
German (de)
English (en)
Other versions
EP0995879A1 (fr
Inventor
Ulrich Becher
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.)
Ateliers Busch SA
Original Assignee
Ateliers Busch SA
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
Priority to AT98811063T priority Critical patent/ATE266800T1/de
Application filed by Ateliers Busch SA filed Critical Ateliers Busch SA
Priority to EP98811063A priority patent/EP0995879B1/fr
Priority to ES98811063T priority patent/ES2221141T3/es
Priority to DE59811390T priority patent/DE59811390D1/de
Priority to AU58464/99A priority patent/AU5846499A/en
Priority to CN99812527A priority patent/CN1113151C/zh
Priority to SK218-2001A priority patent/SK2182001A3/sk
Priority to CZ20010514A priority patent/CZ296509B6/cs
Priority to KR1020017005036A priority patent/KR100607156B1/ko
Priority to JP2000578545A priority patent/JP3955731B2/ja
Priority to BR9914716-5A priority patent/BR9914716A/pt
Priority to US09/807,737 priority patent/US6447276B1/en
Priority to PCT/CH1999/000466 priority patent/WO2000025004A1/fr
Priority to CA002347781A priority patent/CA2347781C/fr
Priority to PL347374A priority patent/PL202371B1/pl
Priority to TR2001/01123T priority patent/TR200101123T2/xx
Priority to EEP200100230A priority patent/EE200100230A/xx
Priority to PE1999001047A priority patent/PE20001430A1/es
Priority to PA19998484601A priority patent/PA8484601A1/es
Priority to ARP990105343A priority patent/AR020939A1/es
Publication of EP0995879A1 publication Critical patent/EP0995879A1/fr
Priority to BG105371A priority patent/BG64490B1/bg
Application granted granted Critical
Publication of EP0995879B1 publication Critical patent/EP0995879B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F01C1/16—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/084—Toothed wheels

Definitions

  • the invention relates to twin screw rotors for installation in positive displacement machines for compressible media, especially pumps, which Rotors catchy executed with varying pitch and intended are, in paraxial, opposite external engagement with wrap angles of at least 720 ° and in an enclosure an axial chamber sequence to form without blast hole connections, wherein the end profile of a Kern Vietnamesebogen, a cycloid-shaped hollow flank, an outer circle arc and another flank (see WO 97/21926).
  • the patent DE 87685 shows a fferenganganlwerk designated machine in which the screw rotors with variable pitch are formed.
  • the machine is both a motor and a pump usable.
  • the patent application EP 0697523 relates to a screw displacement machine, in which the intermeshing rotors unequal, as "male” and “female” designated screw profiles, so-called S.R.M. profiles with continuous slope change.
  • the forehead profile is varied so that the tooth head angle or the length of the outer circle arc a monotonically growing function in dependence from the wrap angle.
  • Such profiles have the disadvantage that a good foreclosure of the axial sequence of working cells because of the remaining Blasloches is not possible.
  • the vacuum losses caused by the blow hole have efficiency losses result, so with such a Machine at least at low and medium speeds no good inner Compaction is possible.
  • the published patent application DE 19530662 discloses a screw suction pump with externally meshing screw elements, at the slope the screw members continuously from their inlet end to their outlet end decreases to cause the compression of the gas to be dispensed.
  • the shape of the teeth of the screw rotor exhibits an epitrochoidal and / or Archimedean curve.
  • This machine has the disadvantage that the achievable internal compression rate in the geometric relationships shown moderate.
  • the missing forehead profile variation fixes that anyway not good compression ratio and leads because of the reduction in depth the gap between the screw outer diameter and the housing for Screw end towards an increased leak rate.
  • the laid-open specification DE 4445958 describes a screw compressor with counter-rotating, external-meshing screw elements.
  • the thread helices of the screw elements are from an axial End to the second axial end away from it continuously smaller.
  • Profile is proposed a rectangular or trapezoidal profile.
  • a disadvantage of such Profile geometries is that they only work lossless enough, when the flight depth in relation to the diameter is small, as stated in the above Publication is executed. Such a machine thus has a big one Construction volume and a big weight. It is another disadvantage of such Profile geometries that require extremely high pitch changes are when a satisfactory internal compression rate is to be achieved. How in the mentioned DE 19530662 also fixed here the missing Stirnprofilvariation this shortcoming and this leads to an increased leakage rate due to reduction the depth of the gap between screw outside diameter and housing towards the end of the screw.
  • the invention is the Task to propose twin screw rotors, which the above have not mentioned disadvantages.
  • the slope is not monotonous and as a dependent variable of the wrap angle is defined that the slope in a first portion of the suction end of the screw increases and after about one wrap reaches a maximum value that the slope in one to the first subarea subsequent second portion decreases and about one wrap reaches a minimum value before the pressure end of the screw and that the Gradient in a subsequent to the second portion third portion is substantially constant.
  • FIG. 1 shows an exemplary embodiment of a pair of screw rotors 1 and 2 which stand together in an axially parallel external engagement.
  • FIGS. 2 and 3 show each of the rotors 1 and 2 according to FIG. 1 separately. It can be clearly seen in these figures that the outer shell and the core are cylindrical and thus the flight depth is constant over the screw length.
  • the mass ⁇ w 1 and ⁇ w 3 show that the pitch of the screw varies along the axis, but that the height h of the helical outer cylindrical rotor surface remains constant, whereby leakage losses between rotor and housing inner wall against the pressure side, as at Some of the above-mentioned machines according to the prior art occur in an undesirable manner, be avoided.
  • the reference numeral 7 designates the reference spiral in this figure, which will be discussed in more detail later, and 8 is the second limiting spiral of the outer cylindrical rotor surface.
  • FIG. 4 shows a rotor in a section at right angles to the rotor axis.
  • the resulting end profile has a Kem Vietnamesebogen 3 with a constant over the entire screw length radius Rb, which - in a clockwise direction - after a sector angle ⁇ in a cycloid-shaped hollow flank 4 passes.
  • the geometry of the hollow flank 4 is unchanged over the entire screw length.
  • At the hollow flank 4 closes at point B at an acute angle an outer circle arc 5 with a constant over the entire screw length radius Ra, which passes to a sector angle ⁇ at point C in a further edge 6.
  • the variation of the front profile contour along the screw axis is based on a change in the sector angle ⁇ and on a change in the geometry of the further flank 6.
  • the variation of the sector angle ⁇ along the screw axis is preferably at least spatially approximately equidistant course of a reference spiral formed by the outermost points of the hollow flank B ⁇ (7 in FIG. 3) and the second limiting spiral (points C) (8 in FIG. 3) of the outer cylindrical rotor surface.
  • FIG. 5 shows in a diagram the development w of the reference spiral mentioned in connection with FIG. 4 as a function of the wrap angle ⁇ .
  • a straight line g and corresponding sections P 0 , 2P 0, etc. of the development of a spiral with a constant pitch are shown.
  • the course of the slope is more clearly recognizable when the first derivative shown in Figure 6 the settlement w considered.
  • w 'increases and, at ⁇ 2 ⁇ , reaches the maximum value (1 + A) * L 0 / 2 ⁇ , where A is the amplitude moderator.
  • FIG. 7 shows the chamber cross-section F as a function of the wrap angle ⁇ , wherein the curve F o shown by a solid line shows the chamber cross-section without profile variation and the dashed curve F m shows the chamber cross-section with profile variation.
  • Figure 8a the cross section is shown of the invention for receiving twin screw rotors certain housing
  • Figure 8b shows one of the representation of Figure 4 corresponding section through the rotors
  • in figure 8c the chamber cross-section F o is shown hatched.
  • FIGS. 9a to 9p the development of the working chamber cross section is shown in end sections represented as a function of the wrap angle. The latter is indicated in the figures in degrees.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)
  • Cleaning In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Rotary Pumps (AREA)

Claims (3)

  1. Vis rotor jumelées pour le montage dans des machines de refoulement pour agents compressibles, rotors qui sont réalisés côte entrée avec une inclinaison variable et sont destinés à être en prise externe axialement parallèle, opposée avec des angles de contact d'enroulement d'au moins 720° et à former dans un coffret une séquence axiale de sas sans liaison de trous de soufflage, le profil frontal se composant d'un arc de cercle central (3), d'un flanc creux de forme de cycloïde (4), d'un arc de cercle externe (5) et d'un autre flanc (6), caractérisées en ce que le pas ne s'étend pas de manière monotone et est défini comme variante dépendante de l'angle de contact d'enroulement, en ce que le pas augmente dans une première zone partielle (T1) depuis l'extrémité de vis côté aspiration et atteint une valeur maximale après environ un enroulement, en ce que le pas diminue dans une seconde zone partielle (T2) dans le prolongement de la première zone partielle et atteint une valeur minimale après environ un enroulement avant l'extrémité de vis côté pression et en ce que le pas est sensiblement constant dans une troisième zone (T3) dans le prolongement de la seconde zone partielle.
  2. Vis rotor jumelées selon la revendication 1, caractérisées en ce que les contours de profil frontal varient le long de l'axe de la vis, dans le fait que les angles de secteur (γ) de l'arc de cercle central (3) et de l'arc de cercle externe (5) varient et en ce que la géométrie de l'autre flanc (6) se modifie, le rayon du cercle central (Rb), le rayon de cercle externe (Ra) et la géométrie du flanc creux étant constants et les points les plus à l'extérieur du flanc creux formant la spirale de référence (7) pour la définition de la courbe du pas.
  3. Vis rotor jumelées selon la revendication 2, caractérisées en ce que la variation des angles de secteur (γ) de l'arc de cercle centré (3) et de l'arc de cercle externe (5) est défini le long de l'axe de vis par un espacement au moins pratiquement équidistant spatialement de la spirale de référence (7) et de la seconde spirale de limitation (8) de la surface externe cylindrique.
EP98811063A 1998-10-23 1998-10-23 Vis transporteuses jumelées Expired - Lifetime EP0995879B1 (fr)

Priority Applications (21)

Application Number Priority Date Filing Date Title
EP98811063A EP0995879B1 (fr) 1998-10-23 1998-10-23 Vis transporteuses jumelées
ES98811063T ES2221141T3 (es) 1998-10-23 1998-10-23 Rotores de tornillos transportadores gemelos.
DE59811390T DE59811390D1 (de) 1998-10-23 1998-10-23 Zwillings-Förderschraubenrotoren
AT98811063T ATE266800T1 (de) 1998-10-23 1998-10-23 Zwillings-förderschraubenrotoren
TR2001/01123T TR200101123T2 (tr) 1998-10-23 1999-10-01 İtici makinalara sıkıştırılabilen maddeler için takılan ikiz uskurlu rotorlar.
SK218-2001A SK2182001A3 (en) 1998-10-23 1999-10-01 Twin helical rotors for installation in displacement machines for compressible media
CZ20010514A CZ296509B6 (cs) 1998-10-23 1999-10-01 Dvojice sroubových rotoru pro vestavbu do výtlacných stroju na stlacitelná média
KR1020017005036A KR100607156B1 (ko) 1998-10-23 1999-10-01 압축성 매체용 이송 기계에 설치하기 위한 2중 스크류 로터
JP2000578545A JP3955731B2 (ja) 1998-10-23 1999-10-01 圧縮可能な媒体用の容積式機械に搭載するツイン・スクリューロータ
BR9914716-5A BR9914716A (pt) 1998-10-23 1999-10-01 Rotores de parafusos geminados para a colocação em máquinas de deslocamento para meios compressìveis
AU58464/99A AU5846499A (en) 1998-10-23 1999-10-01 Twin helical rotors for installation in displacement machines for compressible media
PCT/CH1999/000466 WO2000025004A1 (fr) 1998-10-23 1999-10-01 Rotors en forme de vis jumelee permettant le montage de machines de refoulement destinees a des agents compressibles
CA002347781A CA2347781C (fr) 1998-10-23 1999-10-01 Rotors en forme de vis jumelee permettant le montage de machines de refoulement destinees a des agents compressibles
PL347374A PL202371B1 (pl) 1998-10-23 1999-10-01 Bliźniacze wirniki śrubowe do wbudowania w maszynach wyporowych dla ośrodków ściśliwych
CN99812527A CN1113151C (zh) 1998-10-23 1999-10-01 装在可压缩介质挤出机中的双螺旋转子
EEP200100230A EE200100230A (et) 1998-10-23 1999-10-01 Kaksikkruvirootorid kasutamiseks kompressormasinates
US09/807,737 US6447276B1 (en) 1998-10-23 1999-10-01 Twin screw rotors for installation in displacement machines for compressible media
PE1999001047A PE20001430A1 (es) 1998-10-23 1999-10-18 Rotores helicoidales gemelos para ser montados en maquinas compresoras de medios compresibles
PA19998484601A PA8484601A1 (es) 1998-10-23 1999-10-21 Rotores helicoidales gemelos para ser montados en maquinas compresoras de medio compresibles
ARP990105343A AR020939A1 (es) 1998-10-23 1999-10-22 Rotores helicoidales gemelos para ser montados en máquinas compresoras de medios compresibles.
BG105371A BG64490B1 (bg) 1998-10-23 2001-03-22 Сдвоени винтови ротори за вграждане в нагнетателни машини за свиваеми среди

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98811063A EP0995879B1 (fr) 1998-10-23 1998-10-23 Vis transporteuses jumelées

Publications (2)

Publication Number Publication Date
EP0995879A1 EP0995879A1 (fr) 2000-04-26
EP0995879B1 true EP0995879B1 (fr) 2004-05-12

Family

ID=8236402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98811063A Expired - Lifetime EP0995879B1 (fr) 1998-10-23 1998-10-23 Vis transporteuses jumelées

Country Status (21)

Country Link
US (1) US6447276B1 (fr)
EP (1) EP0995879B1 (fr)
JP (1) JP3955731B2 (fr)
KR (1) KR100607156B1 (fr)
CN (1) CN1113151C (fr)
AR (1) AR020939A1 (fr)
AT (1) ATE266800T1 (fr)
AU (1) AU5846499A (fr)
BG (1) BG64490B1 (fr)
BR (1) BR9914716A (fr)
CA (1) CA2347781C (fr)
CZ (1) CZ296509B6 (fr)
DE (1) DE59811390D1 (fr)
EE (1) EE200100230A (fr)
ES (1) ES2221141T3 (fr)
PA (1) PA8484601A1 (fr)
PE (1) PE20001430A1 (fr)
PL (1) PL202371B1 (fr)
SK (1) SK2182001A3 (fr)
TR (1) TR200101123T2 (fr)
WO (1) WO2000025004A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937094A (zh) * 2012-10-22 2013-02-20 台州职业技术学院 一种干式螺杆真空泵变螺距螺杆

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US6685645B1 (en) * 2001-10-20 2004-02-03 Zonare Medical Systems, Inc. Broad-beam imaging
CH694339A9 (de) * 2000-07-25 2005-03-15 Busch Sa Atel Zwillingsschraubenrotoren und solche enthaltende Ve rdraengermaschinen.
DE10102341A1 (de) * 2001-01-19 2002-08-08 Ralf Steffens Profilkontur einer Schraubenspindelpumpe
CN100351522C (zh) * 2002-06-24 2007-11-28 北越工业株式会社 螺旋转子
DE10300203A1 (de) 2003-01-08 2004-07-22 Pfeiffer Vacuum Gmbh Zweiwellenvakuumpumpe sowie Verfahren zur Herstellung einer Zweiwellenvakuumpumpe
US7753040B2 (en) * 2003-10-24 2010-07-13 Michael Victor Helical field accelerator
KR101176980B1 (ko) * 2005-02-16 2012-08-24 아뜰리에 부쉬 에스.아. 비대칭 형상을 가지는 회전자들을 구비한 체적형 회전 장치
KR101145127B1 (ko) * 2005-10-28 2012-05-14 한라공조주식회사 공기 팽창기 설계방법
GB0525378D0 (en) * 2005-12-13 2006-01-18 Boc Group Plc Screw Pump
JP4853168B2 (ja) * 2006-08-10 2012-01-11 株式会社豊田自動織機 スクリューポンプ
EP2060789A4 (fr) * 2006-09-05 2013-08-28 Toyota Jidoshokki Kk Pompe à vis et rotor en forme de vis
US8328542B2 (en) * 2008-12-31 2012-12-11 General Electric Company Positive displacement rotary components having main and gate rotors with axial flow inlets and outlets
DE102012009103A1 (de) * 2012-05-08 2013-11-14 Ralf Steffens Spindelverdichter
WO2015109048A1 (fr) * 2014-01-15 2015-07-23 Eaton Corporation Procédé d'optimisation de performances d'un compresseur d'alimentation
US10975867B2 (en) 2015-10-30 2021-04-13 Gardner Denver, Inc. Complex screw rotors
CN105422448B (zh) * 2016-01-05 2017-05-31 中国石油大学(华东) 一种变齿宽变螺距的螺杆转子
CN111773990B (zh) * 2020-05-22 2024-09-17 上海恒奕环境科技有限公司 工业污水处理无动力自调节混合加药一体化装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937094A (zh) * 2012-10-22 2013-02-20 台州职业技术学院 一种干式螺杆真空泵变螺距螺杆
CN102937094B (zh) * 2012-10-22 2016-05-04 台州职业技术学院 一种干式螺杆真空泵变螺距螺杆

Also Published As

Publication number Publication date
ES2221141T3 (es) 2004-12-16
WO2000025004A1 (fr) 2000-05-04
PL347374A1 (en) 2002-04-08
JP3955731B2 (ja) 2007-08-08
EP0995879A1 (fr) 2000-04-26
AR020939A1 (es) 2002-06-05
PE20001430A1 (es) 2000-12-15
US6447276B1 (en) 2002-09-10
CA2347781C (fr) 2008-10-14
CZ296509B6 (cs) 2006-03-15
CA2347781A1 (fr) 2000-05-04
CN1113151C (zh) 2003-07-02
DE59811390D1 (de) 2004-06-17
BG105371A (en) 2001-10-31
EE200100230A (et) 2002-06-17
PL202371B1 (pl) 2009-06-30
AU5846499A (en) 2000-05-15
BR9914716A (pt) 2001-08-07
JP2002528668A (ja) 2002-09-03
PA8484601A1 (es) 2001-12-14
CN1324429A (zh) 2001-11-28
CZ2001514A3 (cs) 2001-12-12
KR100607156B1 (ko) 2006-08-01
KR20010080888A (ko) 2001-08-25
TR200101123T2 (tr) 2001-08-21
SK2182001A3 (en) 2001-11-06
BG64490B1 (bg) 2005-04-30
ATE266800T1 (de) 2004-05-15

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