EP1073845B1 - Verdrängermaschine - Google Patents
Verdrängermaschine Download PDFInfo
- Publication number
- EP1073845B1 EP1073845B1 EP99910073A EP99910073A EP1073845B1 EP 1073845 B1 EP1073845 B1 EP 1073845B1 EP 99910073 A EP99910073 A EP 99910073A EP 99910073 A EP99910073 A EP 99910073A EP 1073845 B1 EP1073845 B1 EP 1073845B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- working area
- displacement machine
- bearings
- rotor
- 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
Links
Images
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids 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
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids 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
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/02—Arrangements of bearings
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
- F04C18/086—Carter
-
- 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
- F04C2220/00—Application
- F04C2220/10—Vacuum
- F04C2220/12—Dry running
Definitions
- the invention relates to a displacement machine, in particular for Use as a pump, with a working space formed in a housing, which is delimited by two end walls and a jacket and via an inlet and an outlet for a working medium is accessible and with at least a movably arranged in the housing, dividing the work space Rotor and with a guide gear for rotor control and one Drive device located outside the work area.
- Such displacement machines are of many different types known. You can use it to deliver media, For example, air, and designed and used as a vacuum pump become. In many areas of application of such machines, especially in the Packaging and food industry, the pressure medium must not be oil be contaminated. It is therefore essential that the machines without oil in the Work space. With regard to the rotors, the problem is solved Solved geometries that allow a non-contact engagement of the rotors, so they don't have to be lubricated with oil. But is more problematic the storage of the rotors, as shown below using some typical examples is explained.
- a second type of displacement machine works with hydrodynamic ones or hydrostatic bearings.
- there are also sealing problems here as soon as the working medium is not contaminated with lubricants may be. Overcoming these sealing problems requires one increased construction costs, which makes the weight of the machine undesirable elevated.
- An example of a machine with hydrostatic bearings is in the European Patent application EP 0 376 373 A1. With this type of Displacement machine is the weight and the construction costs for the Application of the lubricant pressure necessary equipment additionally elevated.
- a third type of positive displacement machine is with magnetic bearings for the Equipped with rotor shafts.
- Such bearings already have a relatively high level Weight on. Because of the relatively low forces caused by magnetic Bearings can be accommodated, the rotors must be separated by electronically synchronized motors are driven and cannot be synchronized with a guide gear. In the event of failure however, the synchronization circuit is often a mechanical one Emergency synchronization gear provided.
- a fourth, widely used type of positive displacement machine works with rolling bearings that are conventionally lubricated and dynamic against the work area are sealed.
- a first subspecies of this type are the rotors mounted on both sides, such as in the German patent DE 37 06 588 C1 is shown.
- the support length between the bearings through the seals required to seal them is enlarged.
- the Core diameter of the rotors can be made correspondingly larger. Thereby the size and weight of the machine is increased.
- Another one Machine of this type in accordance with the German published application DE 195 13 380 A1 is supported on one side within the rotor, which has a hole for this purpose instead of a bearing pin. So the span between the bearings is reduced, but the effort to seal the bearings against the work area is not reduced.
- a second subspecies of the aforementioned fourth type works with one-sided Rotors. Such a machine was launched by the applicant on July 15 Filed in 1997 as a Swiss patent under number 1737/97.
- This Machine has the particular advantage that only one storage must be sealed, namely the storage on the pressure side of the work area. This sealing of the work area also offers less Problems because of the risk of contamination of the working medium at the pressure side seal is much less than that of the suction side. Through this However, construction does not have any installation space in comparison with the one mentioned above saved, which limits the application to smaller pumps.
- the present invention has for its object a positive displacement machine to propose of the type mentioned at the beginning, with less Effort and less weight than known generic displacement machines can be produced and in particular without special Lubricants are operated for the bearings.
- This task is solved by that the rotor or rotors at least partially within the working area is or are stored and that within the work area arranged bearings or the bearings arranged within the work space accessible for the working medium and as a roller bearing made of ceramic materials is or are carried out, whereby a lubricant-free operation of the displacement machine is possible.
- the machine according to the invention can therefore without special lubricants are operated for the bearings and this is one Contamination of the working medium with lubricant is practically impossible.
- Displacement machine brings a simple, bilateral storage of the rotors while reducing the spans as well as operation without dynamic seals on the suction side and a general reduction in installation space with yourself.
- Vacuum pumps are not used on the suction side particularly advantageous because failure of such a seal on a machine with conventionally lubricated bearings to contaminate the working medium or break the vacuum.
- the embodiment according to claim 4 also enables one lubricant-free operation of the machine and a further reduction in Rotor support widths.
- the dynamic Shaft seals accessible and exchangeable from the outside.
- FIG. 1 shows a longitudinal section through a displacement machine according to the prior art, which is intended for use as a pump.
- a working space 2 is formed, which has two end walls 3, 4 and a coat 5 is limited.
- the working medium for example air, sucked into the work area and through and ejected an outlet 7 from this.
- Two on their coat in familiar Rotors provided with interlocking helical profiles 8, 9 are rotatably arranged in the work space.
- Guide gear 10 ensures that the two rotors in contact-free turn in the opposite direction.
- the rotors 8 and 9 are each with two conventional bearings 12 and 13 mounted in the end walls 3 and 4, respectively and sealed against the work area 2 with seals 14 and 15. Which The span that results from this arrangement is denoted by L1 in FIG.
- the rotors 8 and 9 are through Rolling bearings 16 and 17 are stored in work space 2.
- these bearings are made of ceramic materials that without lubrication or with Lubrication can only achieve a long service life through the working medium, can dispense with the seals 14 and 15 shown in Figure 1 become.
- the rotors are thus stored in the work area, which means that the opposite the prior art shown in Figure 1 much lower Span L2 results.
- the work area 2 only needs on the side of the guide gear 10 to be sealed, which in the present example by the side of the bearing 17 facing away from the work area dynamic seal 18 takes place.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Formation And Processing Of Food Products (AREA)
- Rolling Contact Bearings (AREA)
Description
- Figur 1
- einen Längsschnitt durch eine Verdrängermaschine nach dem Stand der Technik und
- Figur 2
- einen Längsschnitt durch ein Ausführungsbeispiel der erfindungsgemässen Verdrängermaschine.
Claims (4)
- Verdrängermaschine, insbesondere zur Verwendung als Pumpe, mit einem in einem Gehäuse (1) gebildeten Arbeitsraum (2), der durch zwei Stirnwände (3, 4) und einen Mantel (5) begrenzt ist und über einen Einlass (6) und einen Auslass (7) für ein Arbeitsmedium zugänglich ist sowie mit mindestens einem im Gehäuse beweglich angeordneten, den Arbeitsraum unterteilenden Rotor (8) und mit einem Führungsgetriebe (10) zur Rotorsteuerung und einer ausserhalb des Arbeitsraumes befindlichen Antriebsvorrichtung (11), dadurch gekennzeichnet, dass der Rotor bzw. die Rotoren zumindest teilweise innerhalb des Arbeitsraumes gelagert ist bzw. sind und dass das innerhalb des Arbeitsraumes angeordnete Lager bzw. die innerhalb des Arbeitsraumes angeordneten Lager (16, 17) für das Arbeitsmedium zugänglich und als Wälzlager aus Keramikwerkstoffen ausgeführt ist bzw. sind, wodurch ein schmiermittelfreier Betrieb der Verdrängermaschine möglich ist.
- Verdrängermaschine nach Anspruch 1, dadurch gekennzeichnet, dass im Gehäuse (1) zwei parallelachsige, im Ausseneingriff miteinander kämmende Rotoren (8, 9) drehbar gelagert sind und dass jeder Rotor ein einseitig durch eine Bohrung in der ersten Strinwand (3) herausgeführtes Wellenende mit dynamischer Abdichtung aufweist und an der gegenüberliegenden Stirnseite durch ein keramisches Wälzlager (16) gestützt ist, welches innen an der zweiten, als Blinddeckel ausgeführten Stirnwand (4) befestigt und vom Arbeitsraum durch eine reibungsfreie Labyrinthdichtung geschützt oder frei zugänglich ist.
- Verdrängermaschine nach Anspruch 2 zur Verwendung als Vakuumpumpe, dadurch gekennzeichnet, dass die Rotorgeometrien schraubenförmig oder schraubenähnlich ausgebildet sind und die Maschine somit mit vorwiegend axialer Förderrichtung arbeitet, und dass der Einlass (6) in der Nähe der keramischen Wälzlager (12) an der Blinddeckel-Stirnwand (4) und der Auslass (7) an der Wellenenden-Seite vorgesehen ist.
- Verdrängermaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Rotorlagerungen (17) an der Stirnwand (3) mit den Wellendurchführungen ebenfalls durch innenliegende Keramik-Wälzlager gebildet sind.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99910073A EP1073845B1 (de) | 1998-04-21 | 1999-04-01 | Verdrängermaschine |
SI9930095T SI1073845T1 (en) | 1998-04-21 | 1999-04-01 | Positive displacement machine |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98810350A EP0952351A1 (de) | 1998-04-21 | 1998-04-21 | Verdrängermaschine |
EP98810350 | 1998-04-21 | ||
EP99910073A EP1073845B1 (de) | 1998-04-21 | 1999-04-01 | Verdrängermaschine |
PCT/CH1999/000137 WO1999054627A1 (de) | 1998-04-21 | 1999-04-01 | Verdrängermaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1073845A1 EP1073845A1 (de) | 2001-02-07 |
EP1073845B1 true EP1073845B1 (de) | 2002-07-10 |
Family
ID=8236048
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810350A Withdrawn EP0952351A1 (de) | 1998-04-21 | 1998-04-21 | Verdrängermaschine |
EP99910073A Expired - Lifetime EP1073845B1 (de) | 1998-04-21 | 1999-04-01 | Verdrängermaschine |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98810350A Withdrawn EP0952351A1 (de) | 1998-04-21 | 1998-04-21 | Verdrängermaschine |
Country Status (15)
Country | Link |
---|---|
US (1) | US6354823B1 (de) |
EP (2) | EP0952351A1 (de) |
JP (1) | JP2002512345A (de) |
KR (1) | KR100681477B1 (de) |
CN (1) | CN1095040C (de) |
AT (1) | ATE220448T1 (de) |
AU (1) | AU2918999A (de) |
CA (1) | CA2328718C (de) |
DE (1) | DE59901994D1 (de) |
DK (1) | DK1073845T3 (de) |
ES (1) | ES2182495T3 (de) |
HK (1) | HK1037020A1 (de) |
PT (1) | PT1073845E (de) |
SI (1) | SI1073845T1 (de) |
WO (1) | WO1999054627A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI277694B (en) | 2002-02-28 | 2007-04-01 | Teijin Seiki Co Ltd | Vacuum exhausting apparatus |
JP4321206B2 (ja) * | 2003-10-17 | 2009-08-26 | 株式会社デンソー | 気体圧縮装置 |
BE1016733A3 (nl) * | 2005-08-25 | 2007-05-08 | Atlas Copco Airpower Nv | Verbeterde lagedruk schroefcompressor. |
CN100360804C (zh) * | 2005-11-04 | 2008-01-09 | 浙江工业大学 | 一种外环流活塞泵 |
JP4670729B2 (ja) * | 2006-05-08 | 2011-04-13 | 株式会社デンソー | 気体圧縮機 |
DE102006035783A1 (de) * | 2006-08-01 | 2008-02-07 | Grasso Gmbh Refrigeration Technology | Schraubenverdichter |
US20090098003A1 (en) * | 2007-10-11 | 2009-04-16 | General Electric Company | Multiphase screw pump |
DE102010019635B4 (de) * | 2010-05-06 | 2014-04-03 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Siegelstation für eine Verpackungsmaschine |
CN103047142A (zh) * | 2012-12-29 | 2013-04-17 | 中国科学院沈阳科学仪器股份有限公司 | 一种干气密封螺杆真空泵 |
GB2558954B (en) * | 2017-01-24 | 2019-10-30 | Edwards Ltd | Pump sealing |
RU208092U1 (ru) * | 2021-02-09 | 2021-12-01 | Акционерное общество "Научно-производственное предприятие "Рубин" (АО "НПП "Рубин") | Газодувка объемная двухроторная трехлопастная |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH1737A (fr) | 1890-01-17 | 1890-04-30 | Cie Dubail Monnin Frossard Et | Perfectionnement aux méchanismes de remontoirs des montres de poche |
US1751703A (en) * | 1927-11-03 | 1930-03-25 | Daniel D Long | Pump |
US2633083A (en) * | 1948-09-21 | 1953-03-31 | Barnes Mfg Co | Pump |
US2705922A (en) * | 1953-04-06 | 1955-04-12 | Dresser Ind | Fluid pump or motor of the rotary screw type |
DE3124247C1 (de) * | 1981-06-19 | 1983-06-01 | Boge Kompressoren Otto Boge Gmbh & Co Kg, 4800 Bielefeld | Schraubenverdichter |
JPH0718421B2 (ja) * | 1984-10-29 | 1995-03-06 | 株式会社日立製作所 | 回転式圧縮機の異常検出装置 |
US4674960A (en) * | 1985-06-25 | 1987-06-23 | Spectra-Physics, Inc. | Sealed rotary compressor |
DE3706588C2 (de) | 1987-02-26 | 1993-12-02 | Mannesmann Ag | Antriebseinrichtung für Rotationskolbenverdichter |
JPH01275914A (ja) * | 1988-04-28 | 1989-11-06 | Ulvac Corp | 真空中駆動機構 |
JPH0240201A (ja) * | 1988-07-29 | 1990-02-09 | Tsumura & Co | ロータリー・アトマイザー |
NL8803199A (nl) | 1988-12-29 | 1990-07-16 | Skf Ind Trading & Dev | Schroefcompressor. |
US4975925A (en) * | 1989-11-01 | 1990-12-04 | The Spectranetics Corporation | Unlubricated bearings for gas lasers |
JPH04114360A (ja) * | 1990-09-05 | 1992-04-15 | Fujitsu Ltd | ディスク装置 |
JP2537712B2 (ja) * | 1991-07-10 | 1996-09-25 | 株式会社荏原製作所 | スクリュ―形真空ポンプ |
JP3144033B2 (ja) * | 1992-03-02 | 2001-03-07 | 日本精工株式会社 | 転がり軸受装置 |
US5269667A (en) * | 1993-02-24 | 1993-12-14 | Ingersoll-Rand Company | Removabe discharge port plate for a compressor |
JPH06313433A (ja) * | 1993-04-30 | 1994-11-08 | Shinagawa Refract Co Ltd | セラミック軸受 |
DE19513380C2 (de) | 1995-04-08 | 1997-09-04 | Gutehoffnungshuette Man | Abdichtung, Lagerung und Antrieb der Rotoren eines trockenlaufenden Schraubenrotorverdichters |
US5580232A (en) * | 1995-05-04 | 1996-12-03 | Kobelco Compressors (America), Inc. | Rotor assembly having a slip joint in the shaft assembly |
DE19522551C2 (de) | 1995-06-21 | 2000-05-18 | Sterling Ind Consult Gmbh | Zweiwellen-Verdrängermaschine |
-
1998
- 1998-04-21 EP EP98810350A patent/EP0952351A1/de not_active Withdrawn
-
1999
- 1999-04-01 EP EP99910073A patent/EP1073845B1/de not_active Expired - Lifetime
- 1999-04-01 CN CN99805268A patent/CN1095040C/zh not_active Expired - Fee Related
- 1999-04-01 PT PT99910073T patent/PT1073845E/pt unknown
- 1999-04-01 ES ES99910073T patent/ES2182495T3/es not_active Expired - Lifetime
- 1999-04-01 SI SI9930095T patent/SI1073845T1/xx unknown
- 1999-04-01 KR KR1020007011441A patent/KR100681477B1/ko not_active IP Right Cessation
- 1999-04-01 WO PCT/CH1999/000137 patent/WO1999054627A1/de active IP Right Grant
- 1999-04-01 AT AT99910073T patent/ATE220448T1/de active
- 1999-04-01 DK DK99910073T patent/DK1073845T3/da active
- 1999-04-01 US US09/647,886 patent/US6354823B1/en not_active Expired - Lifetime
- 1999-04-01 CA CA002328718A patent/CA2328718C/en not_active Expired - Fee Related
- 1999-04-01 AU AU29189/99A patent/AU2918999A/en not_active Abandoned
- 1999-04-01 DE DE59901994T patent/DE59901994D1/de not_active Expired - Lifetime
- 1999-04-01 JP JP2000544941A patent/JP2002512345A/ja active Pending
-
2001
- 2001-11-07 HK HK01107812A patent/HK1037020A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20010042719A (ko) | 2001-05-25 |
HK1037020A1 (en) | 2002-01-25 |
SI1073845T1 (en) | 2002-10-31 |
ES2182495T3 (es) | 2003-03-01 |
EP1073845A1 (de) | 2001-02-07 |
AU2918999A (en) | 1999-11-08 |
KR100681477B1 (ko) | 2007-02-09 |
EP0952351A1 (de) | 1999-10-27 |
DE59901994D1 (de) | 2002-08-14 |
JP2002512345A (ja) | 2002-04-23 |
CA2328718A1 (en) | 1999-10-28 |
DK1073845T3 (da) | 2002-09-23 |
CN1298474A (zh) | 2001-06-06 |
CA2328718C (en) | 2008-02-19 |
CN1095040C (zh) | 2002-11-27 |
PT1073845E (pt) | 2002-11-29 |
WO1999054627A1 (de) | 1999-10-28 |
ATE220448T1 (de) | 2002-07-15 |
US6354823B1 (en) | 2002-03-12 |
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