EP0865575B2 - Systeme a vis jumelees - Google Patents

Systeme a vis jumelees Download PDF

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Publication number
EP0865575B2
EP0865575B2 EP96920676A EP96920676A EP0865575B2 EP 0865575 B2 EP0865575 B2 EP 0865575B2 EP 96920676 A EP96920676 A EP 96920676A EP 96920676 A EP96920676 A EP 96920676A EP 0865575 B2 EP0865575 B2 EP 0865575B2
Authority
EP
European Patent Office
Prior art keywords
screw
balancing
hollows
pct
twin screw
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
EP96920676A
Other languages
German (de)
English (en)
Other versions
EP0865575B1 (fr
EP0865575A1 (fr
EP0865575B9 (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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25693140&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0865575(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ateliers Busch SA filed Critical Ateliers Busch SA
Publication of EP0865575A1 publication Critical patent/EP0865575A1/fr
Publication of EP0865575B1 publication Critical patent/EP0865575B1/fr
Application granted granted Critical
Publication of EP0865575B2 publication Critical patent/EP0865575B2/fr
Publication of EP0865575B9 publication Critical patent/EP0865575B9/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps 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
    • F04C2/16—Rotary-piston machines or pumps 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump

Definitions

  • the invention relates to measures for balancing a twin screw set in an axially parallel arrangement with opposite external-axis engagement and with wrap angles of at least 720 ° in a catchy design. Center of gravity distance, face and wrap angle determine the sizes of the static and dynamic imbalance that occur in screws with catchy profiles.
  • the invention has for its object to define measures for balancing catchy screws whose geometry is exceptional or their use requires special materials, without much extra effort in production and without jeopardizing the dimensional stability.
  • a twin-screw set 1, 2 (Fig.1) in paraxial arrangement with opposite Indeedachsigem engagement and wrap angles of at least 720 ° in a catchy embodiment according to the invention that the screw lengths are not fixed to integer multiples of the slope.
  • the screw outer contours in the medium inlet region for balancing 3 (Fig.1) are changed.
  • the twin screws 1 and 2 (Figure 1) lengths of 4.439 times the slope, which corresponds to a wrap angle of 1598 ° ( Figure 3).
  • the front profile 5 ( Figure 2) and the slope 1 ( Figure 1) determine together with the wall thickness d ( Figure 2) most of the contour of the axially mounted Auswuchtthöhlen 4 ( Figure 2); the circle 7 ( Figure 2) limits this towards the center.
  • the straight conclusion inevitably results in the balancing surface.
  • Equation (V) provides at least one solution for ⁇ 1 for any helix angle 2 ⁇ 2 (with ⁇ 2 >2 ⁇ );
  • the dimensions of the balancing cavity follow from ⁇ 1 and ⁇ 2 : From (III) the wrap angle and from (VI) the desired cross-section g 3 .
  • the wrap angle ⁇ 3 of the balancing cavity should be as small as possible; In the case of several solutions for ⁇ 1, therefore, the largest value is used with ⁇ 1 ⁇ 2 .
  • the balancing belt angle there is ⁇ 3 ⁇
  • the dynamic characteristic g 3 reaches a maximum, which requires a maximum balancing cavity: G 3 .
  • Reinforcing ribs at the end of the balancing cavities lead to asymmetrical conditions, which are partially absorbed by correction of the wrap angles 2 ⁇ 2 , ⁇ 3 .
  • the passive area 3 ( Figure 1) extends in both screws on all parts that are required neither to form the first suction-side working cell nor to maintain stability.
  • This external balancing can be used alternatively or in combination with one or more frontal Auswochtthöhlen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Clamps And Clips (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Fodder In General (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Golf Clubs (AREA)
  • Gear Transmission (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Body Structure For Vehicles (AREA)
  • Catalysts (AREA)
  • Hybrid Cells (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Retarders (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (7)

  1. Système de vis jumelées destiné à une pompe à vis selon un agencement à axes parallèles présentant un engrènement contrarotatif externe et des angles d'enroulement d'au moins 720° dans le mode de réalisation à un filet, caractérisé en ce que la longueur des vis n'est pas un multiple entier du pas, et en ce que des cavités d'équilibrage frontales (4) sont prévues dans la zone d'entrée du milieu.
  2. Système de vis jumelées selon la revendication 1, caractérisé en ce que la longueur des vis est supérieure d'un multiple entier du pas à 1,5 fois le pas.
  3. Système de vis jumelées selon la revendication 1 ou 2, caractérisé en ce que les contours extérieurs des vis sont modifiés dans la zone où pénètre le milieu, en vue de l'équilibrage, les contours extérieurs des vis étant modifiés au niveau des parties passives des contours extérieurs du côté aspiration.
  4. Système de vis jumelées selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'au moins une extrémité des vis présente une cavité d'équilibrage (4) interne.
  5. Système de vis jumelées selon la revendication 4, caractérisé en ce que les deux extrémités présentent une cavité d'équilibrage (4).
  6. Système de vis jumelées selon la revendication 4 ou la revendication 5, caractérisé en ce que l'angle d'enroulement des cavités d'équilibrage est modulé afin d'atteindre un réglage optimal.
  7. Système de vis jumelées selon l'une quelconque des revendications 3 à 6, caractérisé en ce que des masses additionnelles (6) sont apposées dans la zone extérieure au niveau de l'engrenage d'entraînement.
EP96920676A 1995-12-11 1996-07-08 Systeme a vis jumelees Expired - Lifetime EP0865575B9 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
CH348795 1995-12-11
CH3487/95 1995-12-11
CH348795 1995-12-11
CH362795 1995-12-21
CH362795 1995-12-21
CH3627/95 1995-12-21
PCT/CH1996/000250 WO1997021925A1 (fr) 1995-12-11 1996-07-08 Systeme a vis jumelees

Publications (4)

Publication Number Publication Date
EP0865575A1 EP0865575A1 (fr) 1998-09-23
EP0865575B1 EP0865575B1 (fr) 2002-12-04
EP0865575B2 true EP0865575B2 (fr) 2006-11-29
EP0865575B9 EP0865575B9 (fr) 2007-06-06

Family

ID=25693140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96920676A Expired - Lifetime EP0865575B9 (fr) 1995-12-11 1996-07-08 Systeme a vis jumelees

Country Status (15)

Country Link
US (1) US6139297A (fr)
EP (1) EP0865575B9 (fr)
JP (1) JP3330955B2 (fr)
KR (1) KR100384925B1 (fr)
CN (1) CN1083536C (fr)
AT (1) ATE229127T1 (fr)
CA (1) CA2240168C (fr)
CZ (1) CZ289289B6 (fr)
DE (1) DE59609957D1 (fr)
DK (1) DK0865575T4 (fr)
ES (1) ES2186785T3 (fr)
NO (1) NO982674L (fr)
PT (1) PT865575E (fr)
SK (1) SK78098A3 (fr)
WO (1) WO1997021925A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026399A1 (fr) 1999-02-08 2000-08-09 Ateliers Busch S.A. Vis transporteuses jumelées
JP4282867B2 (ja) * 2000-03-15 2009-06-24 ナブテスコ株式会社 スクリューロータおよびスクリュー機械
CH694339A9 (de) * 2000-07-25 2005-03-15 Busch Sa Atel Zwillingsschraubenrotoren und solche enthaltende Ve rdraengermaschinen.
DE10111525A1 (de) * 2001-03-09 2002-09-12 Leybold Vakuum Gmbh Schraubenvakuumpumpe mit Rotoreinlauf und Rotorauslauf
GB0226529D0 (en) * 2002-11-14 2002-12-18 Dana Automotive Ltd Pump
CN100400875C (zh) * 2005-01-31 2008-07-09 浙江大学 一种大流量双螺杆泵的摆线螺杆齿形
CN100460681C (zh) * 2005-01-31 2009-02-11 浙江大学 一种大流量双螺杆泵的渐开线螺杆齿形
CN100392249C (zh) * 2005-01-31 2008-06-04 浙江大学 一种大流量双螺杆泵的圆弧螺杆齿形

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714314A (en) * 1951-05-15 1955-08-02 Howden James & Co Ltd Rotors for rotary gas compressors and motors
FR1500160A (fr) * 1966-07-29 1967-11-03 Perfectionnements aux compresseurs et moteurs rotatifs
US3918838A (en) * 1974-01-04 1975-11-11 Dunham Bush Inc Metal reinforced plastic helical screw compressor rotor
FR2530742B1 (fr) * 1982-07-22 1987-06-26 Dba Compresseur volumetrique a vis
JPS62291486A (ja) * 1986-06-12 1987-12-18 Taiko Kikai Kogyo Kk スクリユ−コンプレツサ−
NL8803199A (nl) * 1988-12-29 1990-07-16 Skf Ind Trading & Dev Schroefcompressor.
DE69132867T2 (de) * 1990-08-01 2002-09-12 Matsushita Electric Industrial Co., Ltd. Drehkolbenanlage für flüssige Medien
FR2668209B1 (fr) * 1990-10-18 1994-11-18 Hitachi Koki Kk Pompe d'aspiration moleculaire.
US5273412A (en) * 1991-03-28 1993-12-28 Grasso's Koninklijke Machinefabrieken N.V. Lubricated rotary compressor having a cooling medium inlet to the delivery port
US5269667A (en) * 1993-02-24 1993-12-14 Ingersoll-Rand Company Removabe discharge port plate for a compressor

Also Published As

Publication number Publication date
DE59609957D1 (de) 2003-01-16
NO982674D0 (no) 1998-06-10
EP0865575B1 (fr) 2002-12-04
CZ289289B6 (cs) 2001-12-12
JP2000501809A (ja) 2000-02-15
CN1083536C (zh) 2002-04-24
US6139297A (en) 2000-10-31
EP0865575A1 (fr) 1998-09-23
ES2186785T3 (es) 2003-05-16
JP3330955B2 (ja) 2002-10-07
NO982674L (no) 1998-08-07
DK0865575T3 (da) 2003-03-24
KR19990072036A (ko) 1999-09-27
CA2240168A1 (fr) 1997-06-19
PT865575E (pt) 2003-04-30
CA2240168C (fr) 2007-11-27
AU719268B2 (en) 2000-05-04
WO1997021925A1 (fr) 1997-06-19
CN1207794A (zh) 1999-02-10
CZ177298A3 (cs) 2000-03-15
KR100384925B1 (ko) 2003-08-21
SK78098A3 (en) 1999-02-11
AU6186196A (en) 1997-07-03
DK0865575T4 (da) 2007-04-02
EP0865575B9 (fr) 2007-06-06
ATE229127T1 (de) 2002-12-15

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