EP0925452B9 - Schraubenrotorsatz - Google Patents

Schraubenrotorsatz Download PDF

Info

Publication number
EP0925452B9
EP0925452B9 EP97930285A EP97930285A EP0925452B9 EP 0925452 B9 EP0925452 B9 EP 0925452B9 EP 97930285 A EP97930285 A EP 97930285A EP 97930285 A EP97930285 A EP 97930285A EP 0925452 B9 EP0925452 B9 EP 0925452B9
Authority
EP
European Patent Office
Prior art keywords
screw
rotor
balancing
per
cavity
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
EP97930285A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0925452A1 (de
EP0925452B1 (de
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
Application filed by Ateliers Busch SA filed Critical Ateliers Busch SA
Publication of EP0925452A1 publication Critical patent/EP0925452A1/de
Application granted granted Critical
Publication of EP0925452B1 publication Critical patent/EP0925452B1/de
Publication of EP0925452B9 publication Critical patent/EP0925452B9/de
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
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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 screw rotor set in axially parallel arrangement with opposing external axis engagement as well as with Wrap angles of at least 720 ° in a catchy version.
  • Center of gravity center distance, end face and wrap angle determine the sizes of the static and dynamic unbalance, which with screws catchy profiles occur
  • this method offers the possibility of using Special materials or on the other hand leads to reduced balancing cavities, with what an increase in dimensional stability is achieved.
  • the invention has for its object to define measures for Balancing of catchy screws with a cavern-free, smooth surface without the Use of external additional masses.
  • Design options within a given screw geometry lie in the choice of number, shape and material of the individual rotor parts as well as in the Design of the balancing room 3, as characterized in the subclaims.
  • the screw rotors 101; 201 each consisting of two parts, a cylindrical screw body and one coaxial rotor axis formed.
  • the screw body 104; 204 (Fig.3; 8) is with a screw thread of approx. 9/2 loops as well as with a coaxial Provide central bore.
  • Within the screw body 104; 204 is the Central bore 106; 206 (Fig. 3; 8) expanded to an eccentric cavity, Balancing room 103; 203 (Fig. 3; 8).
  • the rotor axis has no influence on the unbalance; the balancing chamber is formed inside the solid screw and it alone provides compensation for static and dynamic imbalance; thus the problem here is reduced to pure design without the influence of the material data, ie the static and dynamic values of the solid screw and the balancing chamber have to be matched in such a way that the following 4 equations are fulfilled:
  • the index " 3 " indicates the affiliation to the balancing room.
  • the required Pitch depth t (Fig. 3) is relatively large, corresponding to a relatively small core diameter c (Fig.3).
  • the effective balancing space 103 here consists of three axially aligned equidistantly arranged, congruent, spiral wings 108 (Fig.4), which the Follow the course of the screw thread parallel to the distance. 5 shows dash-dotted lines 5 potential wing positions I-V; in the variant described here, only the middle positions II, III, IV, equipped (rough coordination).
  • the area f 0 and the center of gravity position r 0 , ⁇ s can first be determined from the given screw face contour (FIG. 6) using known methods. You get
  • the shape of the balancing space can be determined from the conditions (2b), (4b), (1b), (3b) are not necessarily derived; rather, it is necessary to have a geometry First of all, to determine the 4 key data, then the geometry to correct, redefine the 4 key data etc., until (2b), (4b), (1b), (3b) are met with sufficient accuracy.
  • the balancing space is arranged axially one after the other in staggered fashion Split slices of the same thickness ⁇ W.
  • the front contour of each disc is separate defined by many individual points and saved in this way.
  • a computer program then calculates the values g n and ⁇ n for each slice and stores them in field data memories.
  • pane front cut contour is now being constructed in the middle area of the wing optimally extended to the limit line (dash-dotted in Fig. 6) and the Center of gravity positions of solid screw and balancing chamber to cover brought 108 (Fig.4),
  • the middle area extends over a (initially) variable number of m of the same Disks, the end areas each have 5 disks of decreasing contours (Fig.7).
  • ⁇ W 0.108 [cm] and variation of m one obtains for the 3-winged Balancing room the values shown in Table 2.
  • the required one Gait t relatively small, corresponding to a relatively large core diameter c (Fig.8).
  • the effective balancing space 203 (FIG. 8) runs in a straight line, axially parallel with constant cross section (Fig. 9) eccentrically within the Screw core area, axially mediated (Fig. 10).
  • the screw rotor 302 flying on the rotor axis coaxially attached to the screw body on one side stored.
  • the eccentric balancing chamber 303 is from the axisless end face of the Screw rotor accessible via a large coaxial bore and can therefore open several types can be manufactured.
  • Form screw body and rotor axis preferably a one-piece unit, the coaxial bore on the rotor face side is optionally closed by a plug 309. Special proportions of the Screw body, i.a. due to the one-sided storage, lead to the same Calculation of deviating proportions e, d, j of balancing space 303.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Supercharger (AREA)
  • Cereal-Derived Products (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Refuse Collection And Transfer (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP97930285A 1996-09-12 1997-07-21 Schraubenrotorsatz Expired - Lifetime EP0925452B9 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH223396 1996-09-12
CH223396 1996-09-12
CH241796 1996-10-04
CH241796 1996-10-04
PCT/CH1997/000279 WO1998011351A1 (de) 1996-09-12 1997-07-21 Schraubenrotorsatz

Publications (3)

Publication Number Publication Date
EP0925452A1 EP0925452A1 (de) 1999-06-30
EP0925452B1 EP0925452B1 (de) 2002-08-21
EP0925452B9 true EP0925452B9 (de) 2003-02-26

Family

ID=25689859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97930285A Expired - Lifetime EP0925452B9 (de) 1996-09-12 1997-07-21 Schraubenrotorsatz

Country Status (16)

Country Link
US (1) US6158996A (enExample)
EP (1) EP0925452B9 (enExample)
JP (1) JP4307559B2 (enExample)
KR (1) KR100509640B1 (enExample)
CN (1) CN1093228C (enExample)
AT (1) ATE222641T1 (enExample)
AU (1) AU714936B2 (enExample)
CA (1) CA2262898C (enExample)
CZ (1) CZ292634B6 (enExample)
DE (1) DE59708019D1 (enExample)
DK (1) DK0925452T3 (enExample)
ES (1) ES2180061T3 (enExample)
NO (1) NO991212L (enExample)
PT (1) PT925452E (enExample)
SK (1) SK28999A3 (enExample)
WO (1) WO1998011351A1 (enExample)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026399A1 (de) 1999-02-08 2000-08-09 Ateliers Busch S.A. Zwillings-Förderschrauben
KR100392405B1 (ko) * 2000-06-13 2003-07-31 남기일 가변 리이드를 가지는 스크류형 진공펌프
CH694339A9 (de) * 2000-07-25 2005-03-15 Busch Sa Atel Zwillingsschraubenrotoren und solche enthaltende Ve rdraengermaschinen.
US7833250B2 (en) 2004-11-10 2010-11-16 Jackson Roger P Polyaxial bone screw with helically wound capture connection
US8377100B2 (en) 2000-12-08 2013-02-19 Roger P. Jackson Closure for open-headed medical implant
KR20030034804A (ko) * 2001-10-27 2003-05-09 엘지전선 주식회사 로터의 중심선이 편향되는 구조의 스크류 냉매 압축기
US11224464B2 (en) 2002-05-09 2022-01-18 Roger P. Jackson Threaded closure with inwardly-facing tool engaging concave radiused structures and axial through-aperture
GB0226529D0 (en) * 2002-11-14 2002-12-18 Dana Automotive Ltd Pump
GB2401400A (en) * 2003-05-08 2004-11-10 Automotive Motion Tech Ltd Pump with screw pitch less than 1.6 times the diameter
US7232297B2 (en) * 2003-05-08 2007-06-19 Automotive Motion Technology Limited Screw pump
GB2419920B (en) * 2004-11-08 2009-04-29 Automotive Motion Tech Ltd Pump
US8911479B2 (en) 2012-01-10 2014-12-16 Roger P. Jackson Multi-start closures for open implants
US8911478B2 (en) 2012-11-21 2014-12-16 Roger P. Jackson Splay control closure for open bone anchor
CN103203599B (zh) * 2013-04-03 2017-07-28 威海智德真空科技有限公司 一种不锈钢中空螺杆的制造方法
US9717533B2 (en) 2013-12-12 2017-08-01 Roger P. Jackson Bone anchor closure pivot-splay control flange form guide and advancement structure
CN105811647A (zh) * 2014-12-31 2016-07-27 博世汽车部件(长沙)有限公司 电机
CN105952636B (zh) * 2016-05-05 2017-11-24 扬州大学 自润滑支承的变容积新型双螺杆泵
JP7141459B2 (ja) * 2018-08-29 2022-09-22 株式会社日立産機システム スクリューロータ及びスクリュー流体機械本体
CN114593049B (zh) * 2020-12-04 2023-04-07 东北大学 一种一体式内螺旋空心螺杆转子
US12129848B2 (en) 2021-05-12 2024-10-29 Johnson & Johnson Surgical Vision, Inc. Disposable pump cartridge
GB2608379A (en) * 2021-06-29 2023-01-04 Edwards Ltd Screw-type vacuum pump
US12473915B2 (en) 2022-10-31 2025-11-18 Johnson & Johnson Surgical Vision, Inc. Apparatus and method for mechanically coupling a motor to a rotor of a progressive cavity pump
CN116517834A (zh) * 2023-05-17 2023-08-01 浙江博亚精密机械有限公司 一种带空腔的螺杆转子结构
CN117514806B (zh) * 2023-12-18 2024-06-04 坚固工业设备(杭州)有限公司 立式爪型干式真空泵转子结构、立式真空泵及使用方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA487588A (en) * 1952-10-28 Dresser Industries Screw pump
US2266820A (en) * 1938-07-13 1941-12-23 Frank E Smith Engine
US2441771A (en) * 1941-05-31 1948-05-18 Jarvis C Marble Yieldable drive for rotors
GB670395A (en) * 1950-01-16 1952-04-16 Roots Connersville Blower Corp Improvements in or relating to rotary screw-pumps and motors
JPS62291400A (ja) * 1986-06-10 1987-12-18 三井建設株式会社 覆工構築装置
JPS62291486A (ja) * 1986-06-12 1987-12-18 Taiko Kikai Kogyo Kk スクリユ−コンプレツサ−
JPH01130084A (ja) * 1987-11-13 1989-05-23 Hitachi Ltd 動バランス修正装置
JPH02305393A (ja) * 1989-05-19 1990-12-18 Hitachi Ltd スクリユーロータおよびスクリユー真空ポンプ
CA2058325A1 (en) * 1990-12-24 1992-06-25 Mark E. Baran Positive displacement pumps
US5348453A (en) * 1990-12-24 1994-09-20 James River Corporation Of Virginia Positive displacement screw pump having pressure feedback control
US5662463A (en) * 1993-07-13 1997-09-02 Thomassen International B.V. Rotary screw compressor having a pressure bearing arrangement

Also Published As

Publication number Publication date
CN1230242A (zh) 1999-09-29
CA2262898A1 (en) 1998-03-19
DK0925452T3 (da) 2002-12-30
PT925452E (pt) 2002-12-31
AU714936B2 (en) 2000-01-13
EP0925452A1 (de) 1999-06-30
SK28999A3 (en) 1999-12-10
KR20000035974A (ko) 2000-06-26
NO991212D0 (no) 1999-03-11
CZ292634B6 (cs) 2003-11-12
JP2001503119A (ja) 2001-03-06
KR100509640B1 (ko) 2005-08-23
CN1093228C (zh) 2002-10-23
ES2180061T3 (es) 2003-02-01
CA2262898C (en) 2007-10-02
AU3432297A (en) 1998-04-02
CZ9900755A3 (cs) 2001-02-14
NO991212L (no) 1999-05-11
DE59708019D1 (de) 2002-09-26
EP0925452B1 (de) 2002-08-21
JP4307559B2 (ja) 2009-08-05
WO1998011351A1 (de) 1998-03-19
US6158996A (en) 2000-12-12
ATE222641T1 (de) 2002-09-15

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