EP1477682A1 - Liquid ring gas pump - Google Patents

Liquid ring gas pump Download PDF

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Publication number
EP1477682A1
EP1477682A1 EP03011219A EP03011219A EP1477682A1 EP 1477682 A1 EP1477682 A1 EP 1477682A1 EP 03011219 A EP03011219 A EP 03011219A EP 03011219 A EP03011219 A EP 03011219A EP 1477682 A1 EP1477682 A1 EP 1477682A1
Authority
EP
European Patent Office
Prior art keywords
liquid ring
ring gas
gas pump
openings
control disks
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.)
Granted
Application number
EP03011219A
Other languages
German (de)
French (fr)
Other versions
EP1477682B1 (en
Inventor
Bernd Wenckebach
Silke Heetsch
Alfons Dr. Jünemann
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.)
Sterling Fluid Systems Germany GmbH
Original Assignee
Sterling Fluid Systems Germany GmbH
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 Sterling Fluid Systems Germany GmbH filed Critical Sterling Fluid Systems Germany GmbH
Priority to ES03011219T priority Critical patent/ES2303574T3/en
Priority to DK03011219T priority patent/DK1477682T3/en
Priority to AT03011219T priority patent/ATE391852T1/en
Priority to EP03011219A priority patent/EP1477682B1/en
Priority to DE50309581T priority patent/DE50309581D1/en
Priority to PT03011219T priority patent/PT1477682E/en
Priority to TW093112251A priority patent/TWI274108B/en
Priority to JP2006529735A priority patent/JP4324614B2/en
Priority to CNB2004800134388A priority patent/CN100404868C/en
Priority to CA002523958A priority patent/CA2523958C/en
Priority to US10/556,748 priority patent/US7648344B2/en
Priority to PCT/EP2004/004742 priority patent/WO2004102002A1/en
Priority to MYPI20041827A priority patent/MY137027A/en
Publication of EP1477682A1 publication Critical patent/EP1477682A1/en
Priority to HK05103930A priority patent/HK1071182A1/en
Priority to ZA200507202A priority patent/ZA200507202B/en
Priority to NO20054680A priority patent/NO20054680L/en
Application granted granted Critical
Publication of EP1477682B1 publication Critical patent/EP1477682B1/en
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
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F04C19/005—Details concerning the admission or discharge
    • F04C19/007—Port members in the form of side plates
    • 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
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/10—Manufacture by removing material
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/10—Manufacture by removing material
    • F04C2230/103—Manufacture by removing material using lasers
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/21—Manufacture essentially without removing material by casting
    • 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet

Definitions

  • the invention relates to a liquid ring gas pump with a or several levels, each a work space eccentrically mounted impeller, the work area on both sides axially delimiting flat control discs and on them connecting channels or chambers for the supply and discharge of the conveying gas to and from the work space, thereby characterized in that the control discs are identical to each other with the same suction and pressure openings and unneeded openings on the side facing away from the impeller Side are covered.
  • an impeller runs inside of an eccentrically circling liquid ring. While of the circulation the liquid ring is more or less submerged far into those formed between the vanes of the impeller Cells. This creates the free volume in the impeller cells alternately enlarged and reduced. In that one Circulation area in which the cell volume increases, the suction opening is located on the front of a control disc, through which the gas to be pumped is sucked into the cells becomes. In the end area of the circulation part in which there is the compression takes place, there is the pressure opening, through which the compressed gas enters the pressure chamber of the pump is pushed out.
  • Liquid ring gas pumps are used both as vacuum pumps where the conveying gas from a negative pressure to approximately atmospheric pressure is compressed, as well as used as a compressor in which the conveying gas from atmospheric pressure to overpressure is compressed.
  • Liquid ring gas pumps are available as single-stage and multi-stage versions. Single stage liquid ring gas pumps can due to the lower compression ratio as a vacuum pump in the upper rough vacuum or can be used as a compressor. Have two-stage machines its preferred area of application as a vacuum pump in the lower pressure range of the vacuum.
  • the work rooms in which the impeller rotates and the Liquid ring forms, are axially on one or both sides limited by a control disc.
  • multi-level Liquid ring pumps are these working spaces with an impeller and control discs in a corresponding number axially one behind the other arranged.
  • a liquid ring gas pump consists of one Large number of components used in pump assembly in axial Towards each other.
  • the contact surfaces of the individual components are simultaneously sealing surfaces of the machine from inside the pump to the environment. Close axially outwards to the control discs on the outer housing, in which channels or chambers for guiding the gas and liquid flows are included. Also between the control discs and the outer ones Housings are surfaces to be sealed again.
  • the control disks have openings that allow the inflow and outflow of the conveying gas from the outer compressor housing in or ensure from the work area.
  • the design of the liquid ring gas pump are in these control disks one or two openings for the inflow (Suction opening) or outflow (pressure opening) of the pumped medium intended. Due to the compression of the gas in each liquid ring stage the pressure opening is generally smaller than the suction port. On the achievable intake volume flow and the efficiency have the exact position and the geometrical contours of the openings have a great influence. That is why the shape and differ in practice Size of suction and pressure opening.
  • control discs are designed differently. So has to Example with the two-stage pump each of the four control disks a different geometry.
  • the two axially outer Control discs each have a suction and pressure opening; the middle control disc of the first stage only has the pressure opening, and has the middle control disc of the second stage only the suction opening.
  • the control disks as Castings are made, even the two outer ones Control discs different in design because of the openings and the centering to the housing arranged in mirror image are.
  • the disadvantage of this conventional pump design is the large number of different components that are high Complexity in the production, the raw part procurement, the Cause parts processing and warehousing. Height Unit and processing costs are the result.
  • control disks are already known flat slices with constant thickness easier to design (EP 0 678 674 A2). This makes it possible to have symmetrical control discs run as a single component.
  • These control disks can be manufactured from flat sheet metal punched or processed with laser technology. additionally it is often necessary to use the adjacent flow channels to adjust in the neighboring housing parts so that optimal flow conditions can be achieved. So is with State of the art mentioned the outflow from the work area staged in the print slot, which approximately a curved flow channel is modeled.
  • the object of the invention is to create a Liquid gas ring pump, in which the number of different Control discs is reduced.
  • control discs identical to each other with the same suction and pressure openings are trained and openings not required the side facing away from the wing edge are covered.
  • the invention can be for single-stage, but especially for multi-stage liquid ring gas pumps are used.
  • the liquid ring gas pump according to the invention has only control disks in an identical geometric design. Possible this is because the unneeded openings on the side facing away from the impeller by neighboring ones Components are covered. It is not necessary that in the control disc the remaining open space is not required opening must be filled, although one thinks would that through this additional space, in which too gas to be pumped, the efficiency deteriorates becomes.
  • the one according to the invention works Liquid ring gas pump with the same performance data like a liquid ring gas pump without the corresponding open one Spaces in the control disks, since each is outside covered opening in the work area axially opposite the opening to the associated flow channels. In this The position of the impeller is during the compression process equal pressures in the neighboring impeller cells, whereby practically no back flows occur. Also experimental it has been shown that there is no negative impact on the intake volume flow of the liquid ring gas pump.
  • liquid ring gas pump series consisting of single and multi-stage machines as well Compressor stages with different axial lengths at all points with the same uniform control discs be equipped.
  • the invention makes a significant one Reduction in the number of different components achieved. This creates significant savings in manufacturing and Assembly process. The manufacturing cost of such Liquid ring gas pumps are therefore significantly lower.
  • control discs further openings required for the function of the compressor (Holes) can contain, for example for the Liquid that is either open or covered.
  • the uniform control disks are expediently level Plates and have a suction opening and a pressure opening on.
  • the uniform control discs can also be cast parts be and then also a suction port and one Print port included.
  • Figure 1 shows a conventional two-stage liquid ring gas pump. This has two impellers 2, which are in two Working rooms 8 are arranged and carried by a shaft 9 become. The working spaces 8 are axial by means of control disks 3, 4 limited. As you can see, four are different Control discs needed.
  • FIG 2 shows a similar representation of an inventive Pump in which the control discs 3, 4 with the suction openings 6 and pressure openings 7 are identical to each other are.
  • the pressure opening 7 is through an intermediate wall 10 the inner control disc 4 of the left (second) stage and the suction opening 6 of the inner control disc 4 of the right (first) stage covered.
  • the pressure opening of the inner control disc 4 of the right stage stands with through a channel 11 the suction opening of the inner control disc 4 of the left stage in connection.
  • With 12 are more for the function of the pump designated required openings.
  • Figure 3 shows a single-stage pump in which the two control discs 3 with the suction opening 6 and the pressure opening 7 are identical.
  • FIG. 4 there is a control disk in a top view 3, 4 with the suction opening 6 and the pressure opening 7 shown.

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  • 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)
  • Gyroscopes (AREA)
  • Fluid-Pressure Circuits (AREA)
  • External Artificial Organs (AREA)
  • Laser Beam Processing (AREA)

Abstract

The fluid ring gas pump, with one or more stages, has a working zone (8) for each with a vane wheel (2) on an eccentric mounting. The working zone is defined axially on both sides by flat control disks (3,4), with channels or chambers for the inflow and outflow of the carrier gas. The control disks are identical, each fitted with the same suction (6) and pressure (7) openings, and the unused openings are covered on the sides away from the vane wheel. The disk openings (12) for the compressor function are open or shrouded selectively. The control disks are stamped, burned by a laser beam or cut by water jets.

Description

Die Erfindung betrifft eine Flüssigkeitsringgaspumpe mit einer oder mehreren Stufen, die jeweils einen Arbeitsraum, ein darin exzentrisch gelagertes Flügelrad, den Arbeitsraum beidseitig axial begrenzende flache Steuerscheiben und sich daran anschließende Kanäle oder Kammern für die Zu- und Abführung des Fördergases zu dem und von dem Arbeitsraum aufweisen, dadurch gekennzeichnet, daß die Steuerscheiben identisch miteinander mit gleichen Saug- und Drucköffnungen ausgebildet sind und nicht benötigte Öffnungen auf der vom Flügelrad abgewandten Seite zugedeckt sind.The invention relates to a liquid ring gas pump with a or several levels, each a work space eccentrically mounted impeller, the work area on both sides axially delimiting flat control discs and on them connecting channels or chambers for the supply and discharge of the conveying gas to and from the work space, thereby characterized in that the control discs are identical to each other with the same suction and pressure openings and unneeded openings on the side facing away from the impeller Side are covered.

In Flüssigkeitsringgaspumpen läuft ein Flügelrad innerhalb eines exzentrisch kreisenden Flüssigkeitsrings um. Während des Umlaufs taucht der Flüssigkeitsring mehr oder weniger weit in die zwischen den Flügeln des Flügelrads gebildeten Zellen ein. Dadurch wird das freie Volumen in den Flügelradzellen wechselnd vergrößert und verkleinert. In demjenigen Umlaufbereich, in welchem sich das Zellenvolumen vergrößert, befindet sich stirnseitig in einer Steuerscheibe die Saugöffnung, durch die das zu fördernde Gas in die Zellen eingesaugt wird. Im Endbereich desjenigen Umlaufteils, in welchem sich die Kompression vollzieht, befindet sich die Drucköffnung, durch die das komprimierte Gas in den Druckraum der Pumpe ausgeschoben wird. In liquid ring gas pumps, an impeller runs inside of an eccentrically circling liquid ring. While of the circulation the liquid ring is more or less submerged far into those formed between the vanes of the impeller Cells. This creates the free volume in the impeller cells alternately enlarged and reduced. In that one Circulation area in which the cell volume increases, the suction opening is located on the front of a control disc, through which the gas to be pumped is sucked into the cells becomes. In the end area of the circulation part in which there is the compression takes place, there is the pressure opening, through which the compressed gas enters the pressure chamber of the pump is pushed out.

Flüssigkeitsringgaspumpen werden sowohl als Vakuumpumpe, wo das Fördergas von einem Unterdruck auf etwa Atmosphärendruck verdichtet wird, als auch als Kompressor eingesetzt, bei denen das Fördergas von Atmosphärendruck auf einen Überdruck verdichtet wird. Flüssigkeitsringgaspumpen gibt es als einstufige und mehrstufige Ausführungen. Einstufige Flüssigkeitsringgaspumpen können aufgrund des geringeren Verdichtungsverhältnisses als Vakuumpumpe im oberen Grobvakuum bzw. als Kompressor eingesetzt werden. Zweistufige Maschinen haben ihren Vorzugseinsatzbereich als Vakuumpumpe im unteren Druckbereich des Vakuums.Liquid ring gas pumps are used both as vacuum pumps where the conveying gas from a negative pressure to approximately atmospheric pressure is compressed, as well as used as a compressor in which the conveying gas from atmospheric pressure to overpressure is compressed. Liquid ring gas pumps are available as single-stage and multi-stage versions. Single stage liquid ring gas pumps can due to the lower compression ratio as a vacuum pump in the upper rough vacuum or can be used as a compressor. Have two-stage machines its preferred area of application as a vacuum pump in the lower pressure range of the vacuum.

Die Arbeitsräume, in denen das Flügelrad rotiert und sich der Flüssigkeitsring ausbildet, sind axial einseitig oder beidseitig von einer Steuerscheibe begrenzt. Bei mehrstufigen Flüssigkeitsringpumpen sind diese Arbeitsräume mit Flügelrad und Steuerscheiben in entsprechender Anzahl axial hintereinander angeordnet.The work rooms in which the impeller rotates and the Liquid ring forms, are axially on one or both sides limited by a control disc. With multi-level Liquid ring pumps are these working spaces with an impeller and control discs in a corresponding number axially one behind the other arranged.

Traditionell besteht eine Flüssigkeitsringgaspumpe aus einer Vielzahl von Bauteilen, die bei der Pumpenmontage in axialer Richtung aneinander angeordnet werden. Die Auflageflächen der einzelnen Bauteile sind gleichzeitig Dichtflächen der Maschine vom Pumpeninneren zur Umgebung. Axial nach außen schließen an die Steuerscheiben die äußeren Gehäuse an, in denen Kanäle oder Kammern für die Führung der Gas- und Flüssigkeitsströme enthalten sind. Auch zwischen den Steuerscheiben und den äußeren Gehäusen sind wieder abzudichtende Flächen.Traditionally, a liquid ring gas pump consists of one Large number of components used in pump assembly in axial Towards each other. The contact surfaces of the individual components are simultaneously sealing surfaces of the machine from inside the pump to the environment. Close axially outwards to the control discs on the outer housing, in which channels or chambers for guiding the gas and liquid flows are included. Also between the control discs and the outer ones Housings are surfaces to be sealed again.

Die Steuerscheiben weisen Öffnungen auf, die das Zu- und Ausströmen des Fördergases vom äußeren Verdichtergehäuse in bzw. aus dem Arbeitsraum gewährleisten. Je nach Stufenzahl und Bauform der Flüssigkeitsringgaspumpe sind in diesen Steuerscheiben ein oder zwei Öffnungen für das Einströmen (Saugöffnung) bzw. Ausströmen (Drucköffnung)des Fördermediums vorgesehen. Aufgrund der Kompression des Gases in jeder Flüssigkeitsringstufe ist die Drucköffnung im allgemeinen kleiner als die Saugöffnung ausgeführt. Auf den erreichbaren Ansaugvolumenstrom und den Wirkungsgrad haben die genaue Position und die geometrischen Konturen der Öffnungen großen Einfluß. Deshalb unterscheiden sich in der Praxis auch die Form und Größe von Saug- und Drucköffnung.The control disks have openings that allow the inflow and outflow of the conveying gas from the outer compressor housing in or ensure from the work area. Depending on the number of levels and The design of the liquid ring gas pump are in these control disks one or two openings for the inflow (Suction opening) or outflow (pressure opening) of the pumped medium intended. Due to the compression of the gas in each liquid ring stage the pressure opening is generally smaller than the suction port. On the achievable intake volume flow and the efficiency have the exact position and the geometrical contours of the openings have a great influence. That is why the shape and differ in practice Size of suction and pressure opening.

Bei dieser klassischen Pumpenkonstruktion sind die Steuerscheiben konstruktiv unterschiedlich ausgeführt. So hat zum Beispiel bei der zweistufigen Pumpe jede der vier Steuerscheiben eine andere Geometrie. Die beiden axial äußeren Steuerscheiben haben je eine Saug- und Drucköffnung; die mittlere Steuerscheibe der ersten Stufe hat nur die Drucköffnung, und die mittlere Steuerscheibe der zweiten Stufe hat nur die Saugöffnung. Da konventionell die Steuerscheiben als Gußteile ausgeführt werden, sind sogar die beiden äußeren Steuerscheiben konstruktiv verschieden, weil die Öffnungen und die Zentrierungen zum Gehäuse spiegelbildlich angeordnet sind. Der Nachteil dieser herkömmlichen Pumpenkonstruktion ist die große Zahl unterschiedlicher Bauteile, die eine hohe Komplexität in der Produktion, der Rohteilbeschaffung, der Teilebearbeitung und der Lagerhaltung verursachen. Hohe Stück- und Verarbeitungskosten sind die Folge.In this classic pump design, the control discs are designed differently. So has to Example with the two-stage pump each of the four control disks a different geometry. The two axially outer Control discs each have a suction and pressure opening; the middle control disc of the first stage only has the pressure opening, and has the middle control disc of the second stage only the suction opening. As conventional the control disks as Castings are made, even the two outer ones Control discs different in design because of the openings and the centering to the housing arranged in mirror image are. The disadvantage of this conventional pump design is the large number of different components that are high Complexity in the production, the raw part procurement, the Cause parts processing and warehousing. Height Unit and processing costs are the result.

Bereits bekannt sind erste Ansätze, die Steuerscheiben als ebene Scheiben mit konstanter Dicke einfacher zu gestalten (EP 0 678 674 A2). Dadurch ist es möglich, symmetrische Steuerscheiben als ein einheitliches Bauteil auszuführen. In der Herstellung können diese Steuerscheiben aus ebenen Blechen gestanzt oder mit Lasertechnologie bearbeitet werden. Zusätzlich ist es häufig erforderlich, die angrenzenden Strömungskanäle in den benachbarten Gehäuseteilen so anzupassen, daß optimale Strömungsverhältnisse erreicht werden. So ist beim genannten Stand der Technik die Ausströmung aus dem Arbeitsraum im Druckschlitz gestuft ausgeführt, wodurch näherungsweise ein gekrümmter Strömungskanal modelliert wird.The first approaches, the control disks, are already known flat slices with constant thickness easier to design (EP 0 678 674 A2). This makes it possible to have symmetrical control discs run as a single component. In the These control disks can be manufactured from flat sheet metal punched or processed with laser technology. additionally it is often necessary to use the adjacent flow channels to adjust in the neighboring housing parts so that optimal flow conditions can be achieved. So is with State of the art mentioned the outflow from the work area staged in the print slot, which approximately a curved flow channel is modeled.

Durchgängig einheitliche Steuerscheiben, die als ebene Bauteile ausgeführt sind, sind bisher nur bei einstufigen Flüssigkeitsringgaspumpen eingesetzt worden, da diese bei einheitlicher Gestaltung immer eine Saugöffnung und eine Drucköffnung besitzen. Für mehrstufige Pumpen, bei denen die mittleren Steuerscheiben jeweils nur eine Öffnung haben dürfen, wären mindestens drei verschiedene Ausführungen der Steuerscheiben notwendig.Consistently uniform control disks that act as flat components are only available for single-stage liquid ring gas pumps have been used since these are uniform Always design a suction opening and a pressure opening have. For multi-stage pumps where the middle Control disks may only have one opening at a time, would be at least three different versions of the control discs necessary.

Die Aufgabe der Erfindung besteht in der Schaffung einer Flüssigkeitsgasringpumpe, bei der die Anzahl unterschiedlicher Steuerscheiben verringert ist.The object of the invention is to create a Liquid gas ring pump, in which the number of different Control discs is reduced.

Die erfindungsgemäße Lösung besteht darin, daß die Steuerscheiben identisch miteinander mit gleichen Saug- und Drucköffnungen ausgebildet sind und nicht benötigte Öffnungen auf der vom Flügelrand abgewandten Seite zugedeckt sind.The solution according to the invention is that the control discs identical to each other with the same suction and pressure openings are trained and openings not required the side facing away from the wing edge are covered.

Die Erfindung kann für einstufige, insbesondere aber für mehrstufige Flüssigkeitsringgaspumpen verwendet werden.The invention can be for single-stage, but especially for multi-stage liquid ring gas pumps are used.

Die erfindungsgemäße Flüssigkeitsringgaspumpe weist nur Steuerscheiben in identischer geometrischer Ausführung auf. Möglich wird dies dadurch, daß die nicht benötigten Öffnungen auf der vom Flügelrad abgewandten Seite durch benachbarte Bauteile abgedeckt werden. Dabei ist es nicht notwendig, daß in der Steuerscheibe der verbleibende offene Raum der nicht benötigten Öffnung ausgefüllt werden muß, obwohl man meinen würde, daß durch diesen zusätzlichen Raum, in dem sich auch zu pumpendes Gas befindet, der Wirkungsgrad verschlechtert wird. Erstaunlicherweise funktioniert aber die erfindungsgemäße Flüssigkeitsringgaspumpe mit den gleichen Leistungsdaten wie eine Flüssigkeitsringgaspumpe ohne die entsprechenden offenen Räume in den Steuerscheiben, da sich der jeweils außen abgedeckten Öffnung im Arbeitsraum axial gegenüber die Öffnung zu den zugehörigen Strömungskanälen befindet. In dieser Position des Flügelrads liegen während des Verdichtungsvorgangs in den benachbarten Flügelradzellen gleiche Drücke vor, wodurch praktisch keine Rückströmungen auftreten. Auch experimentell wurde nachgewiesen, daß es keinen negativen Einfluß auf den Ansaugvolumenstrom der Flüssigkeitsringgaspumpe gibt.The liquid ring gas pump according to the invention has only control disks in an identical geometric design. Possible this is because the unneeded openings on the side facing away from the impeller by neighboring ones Components are covered. It is not necessary that in the control disc the remaining open space is not required opening must be filled, although one thinks would that through this additional space, in which too gas to be pumped, the efficiency deteriorates becomes. Surprisingly, however, the one according to the invention works Liquid ring gas pump with the same performance data like a liquid ring gas pump without the corresponding open one Spaces in the control disks, since each is outside covered opening in the work area axially opposite the opening to the associated flow channels. In this The position of the impeller is during the compression process equal pressures in the neighboring impeller cells, whereby practically no back flows occur. Also experimental it has been shown that there is no negative impact on the intake volume flow of the liquid ring gas pump.

Auch bei einstufigen Pumpen mit diagonaler Durchströmung, bei denen saug- bzw. druckseitig jeweils nur eine Öffnung benutzt wird, kann die Erfindung verwendet werden, wenn die jeweils nicht benutzte Saug- oder Drucköffnung abgedeckt wird. Erfindungsgemäß können daher komplette Flüssigkeitsringgaspumpenbaureihen, bestehend aus ein- und mehrstufigen Maschinen sowie aus Verdichterstufen mit unterschiedlichen axialen Längen an allen Stellen mit den gleichen einheitlichen Steuerscheiben ausgerüstet werden. Durch die Erfindung wird eine bedeutende Reduzierung der Anzahl unterschiedlicher Bauteile erzielt. Dadurch entstehen markante Einsparungen im Fertigungsund Montageprozeß. Die Herstellungskosten einer derartigen Flüssigkeitsringgaspumpe sind daher deutlich geringer. Even with single-stage pumps with diagonal flow, at which only use one opening on the suction and pressure side the invention can be used if the respective unused suction or pressure opening is covered. According to the invention can therefore complete liquid ring gas pump series, consisting of single and multi-stage machines as well Compressor stages with different axial lengths at all points with the same uniform control discs be equipped. The invention makes a significant one Reduction in the number of different components achieved. This creates significant savings in manufacturing and Assembly process. The manufacturing cost of such Liquid ring gas pumps are therefore significantly lower.

Vorteilhafterweise ist vorgesehen, daß die Steuerscheiben weitere für die Funktion des Verdichters erforderliche Öffnungen (Bohrungen) enthalten können, zum Beispiel für die Flüssigkeit, die wahlweise offen oder abgedeckt sind.It is advantageously provided that the control discs further openings required for the function of the compressor (Holes) can contain, for example for the Liquid that is either open or covered.

Bei einstufiger Bauweise der Pumpe, bei der die äußeren Steuerscheiben beidseitig sowohl die Saugöffnung als auch die Drucköffnung benötigen, sind die Saug- und Drucköffnungen unabgedeckt.With a single-stage design of the pump, in which the outer control discs both the suction opening as well as the Need pressure opening, the suction and pressure openings are uncovered.

Zweckmäßigerweise sind die einheitlichen Steuerscheiben ebene Platten und weisen eine Saugöffnung und eine Drucköffnung auf. Die einheitlichen Steuerscheiben können aber auch Gußteile sein und dann ebenfalls eine Saugöffnung und eine Drucköffnung enthalten.The uniform control disks are expediently level Plates and have a suction opening and a pressure opening on. The uniform control discs can also be cast parts be and then also a suction port and one Print port included.

Wird die Steuerscheibe durch Stanzen, Laserbrennen oder Wasserstrahlschneiden erzeugt, ist in vielen Fällen keine weitere Bearbeitung erforderlich.Is the control disc by punching, laser burning or water jet cutting generated, in many cases there is no further one Processing required.

Die Erfindung wird im folgenden anhand von vorteilhaften Ausführungsformen unter Bezugnahme auf die beigefügten Zeichnungen beschrieben. Es zeigen:

Figur 1
im Querschnitt eine Flüssigkeitsringgaspumpe des Standes der Technik;
Figur 2
eine erste Ausführungsform einer erfindungsgemäßen Flüssigkeitsringgaspumpe;
Figur 3
eine zweite Form einer erfindungsgemäßen Flüssigkeitsringgaspumpe; und
Figur 4
eine erfindungsgemäße Steuerscheibe in Draufsicht.
The invention is described below with reference to advantageous embodiments with reference to the accompanying drawings. Show it:
Figure 1
in cross section a liquid ring gas pump of the prior art;
Figure 2
a first embodiment of a liquid ring gas pump according to the invention;
Figure 3
a second form of a liquid ring gas pump according to the invention; and
Figure 4
a control disc according to the invention in plan view.

Figur 1 zeigt eine konventionelle zweistufige Flüssigkeitsringgaspumpe. Diese weist zwei Flügelräder 2 auf, die in zwei Arbeitsräumen 8 angeordnet sind und von einer Welle 9 getragen werden. Axial werden die Arbeitsräume 8 durch Steuerscheiben 3, 4 begrenzt. Wie man sieht, werden vier unterschiedliche Steuerscheiben benötigt.Figure 1 shows a conventional two-stage liquid ring gas pump. This has two impellers 2, which are in two Working rooms 8 are arranged and carried by a shaft 9 become. The working spaces 8 are axial by means of control disks 3, 4 limited. As you can see, four are different Control discs needed.

Figur 2 zeigt in ähnlicher Darstellung eine erfindungsgemäße Pumpe, bei denen die Steuerscheiben 3, 4 mit den Saugöffnungen 6 und Drucköffnungen 7 identische miteinander ausgebildet sind. Durch eine Zwischenwand 10 ist dabei die Drucköffnung 7 der inneren Steuerscheibe 4 der linken (zweiten) Stufe und die Saugöffnung 6 der inneren Steuerscheibe 4 der rechten (ersten) Stufe abgedeckt. Die Drucköffnung der inneren Steuerscheibe 4 der rechten Stufe steht durch einen Kanal 11 mit der Saugöffnung der inneren Steuerscheibe 4 der linken Stufe in Verbindung. Mit 12 sind weitere für die Funktion der Pumpe erforderliche Öffnungen bezeichnet.Figure 2 shows a similar representation of an inventive Pump in which the control discs 3, 4 with the suction openings 6 and pressure openings 7 are identical to each other are. The pressure opening 7 is through an intermediate wall 10 the inner control disc 4 of the left (second) stage and the suction opening 6 of the inner control disc 4 of the right (first) stage covered. The pressure opening of the inner control disc 4 of the right stage stands with through a channel 11 the suction opening of the inner control disc 4 of the left stage in connection. With 12 are more for the function of the pump designated required openings.

Figur 3 zeigt eine einstufige Pumpe, bei der die beiden Steuerscheiben 3 mit der Saugöffnung 6 und der Drucköffnung 7 identisch ausgebildet sind.Figure 3 shows a single-stage pump in which the two control discs 3 with the suction opening 6 and the pressure opening 7 are identical.

In Figur 4 ist schließlich in Draufsicht eine Steuerscheibe 3, 4 mit der Saugöffnung 6 und der Drucköffnung 7 gezeigt.Finally, in FIG. 4 there is a control disk in a top view 3, 4 with the suction opening 6 and the pressure opening 7 shown.

Claims (8)

Flüssigkeitsringgaspumpe mit einer oder mehreren Stufen, die jeweils einen Arbeitsraum (8), ein darin exzentrisch gelagertes Flügelrad (2), den Arbeitsraum beidseitig axial begrenzende flache Steuerscheiben (3, 4) und sich darin anschließende Kanäle oder Kammern für die Zu- und Abführung des Fördergases zu dem und von dem Arbeitsraum (8) aufweisen, dadurch gekennzeichnet, daß die Steuerscheiben (3, 4) identisch miteinander mit gleichen Saug- (6) und Drucköffnungen (7) ausgebildet sind und nicht benötigte Öffnungen (6, 7) auf der vom Flügelrad (2) abgewandten Seite zugedeckt sind.Liquid ring gas pump with one or more stages, each with a work chamber (8), an eccentrically mounted impeller (2), flat control disks (3, 4) axially delimiting the work chamber on both sides, and adjoining channels or chambers for the supply and discharge of the Have conveying gas to and from the work space (8), characterized in that the control disks (3, 4) are identical to one another with the same suction (6) and pressure openings (7) and openings (6, 7) not required on the are covered from the side facing away from the impeller (2). Flüssigkeitsringgaspumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerscheiben (3, 4) weitere für die Funktion des Verdichters erforderliche Öffnungen (Bohrungen) (12) enthalten, die wahlweise offen oder abgedeckt sind.Liquid ring gas pump according to claim 1, characterized in that the control disks (3, 4) contain further openings (bores) (12) required for the function of the compressor, which are optionally open or covered. Flüssigkeitsringgaspumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei mehrstufiger Bauweise, bei der die inneren Steuerscheiben (4) funktionstechnisch entweder nur die Saugöffnung (6) oder nur die Drucköffnung (7) benötigen, die nicht erforderlichen Öffnungen (6, 7) durch ein benachbartes Bauteil abgedeckt sind.Liquid ring gas pump according to Claim 1 or 2, characterized in that, in the case of a multi-stage construction in which the inner control disks (4) functionally require either only the suction opening (6) or only the pressure opening (7), the openings (6, 7) which are not required pass through an adjacent component is covered. Flüssigkeitsringgaspumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei einstufiger Bauweise, bei der die Steuerscheiben (3) einseitig nur die Saugöffnung (6) oder die Drucköffnung (7) benötigen, durch die axial äußeren Gehäuse (5) die nicht benutzten Öffnungen (6, 7) abgedeckt sind.Liquid ring gas pump according to claim 1 or 2, characterized in that in the case of a single-stage construction, in which the control disks (3) only need the suction opening (6) or the pressure opening (7) on one side, the unused openings (5) through the axially outer housing (5) 6, 7) are covered. Flüssigkeitsringgaspumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei einstufiger Bauweise, bei der die äußeren Steuerscheiben (3) beidseitig sowohl die Saugöffnung (6) als auch die Drucköffnung (7) benötigen, die Saug- und Drucköffnungen (6, 7) unabgedeckt sind.Liquid ring gas pump according to claim 1 or 2, characterized in that in the case of a single-stage construction in which the outer control disks (3) require both the suction opening (6) and the pressure opening (7) on both sides, the suction and pressure openings (6, 7) are not covered are. Flüssigkeitsringgaspumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die einheitlichen Steuerscheiben (3, 4) ebene Platten sind und eine Saugöffnung (6) und eine Drucköffnung (7) enthalten.Liquid ring gas pump according to one of claims 1 to 5, characterized in that the uniform control disks (3, 4) are flat plates and contain a suction opening (6) and a pressure opening (7). Flüssigkeitsringgaspumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Steuerscheiben (3, 4) durch Stanzen, Laserbrennen oder Wasserstrahlschneider hergestellt sind.Liquid ring gas pump according to one of claims 1 to 6, characterized in that the control disks (3, 4) are produced by punching, laser burning or water jet cutters. Flüssigkeitsringgaspumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die einheitlichen Steuerscheiben (3, 4) Gußteile sind und eine Saugöffnung (6) und eine Drucköffnung (7) enthalten.Liquid ring gas pump according to one of claims 1 to 6, characterized in that the uniform control disks (3, 4) are cast parts and contain a suction opening (6) and a pressure opening (7).
EP03011219A 2003-05-16 2003-05-16 Liquid ring gas pump Expired - Lifetime EP1477682B1 (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
ES03011219T ES2303574T3 (en) 2003-05-16 2003-05-16 LIQUID RING GAS PUMP.
DK03011219T DK1477682T3 (en) 2003-05-16 2003-05-16 Liquid ring pump
AT03011219T ATE391852T1 (en) 2003-05-16 2003-05-16 LIQUID RING GAS PUMP
EP03011219A EP1477682B1 (en) 2003-05-16 2003-05-16 Liquid ring gas pump
DE50309581T DE50309581D1 (en) 2003-05-16 2003-05-16 Liquid ring gas pump
PT03011219T PT1477682E (en) 2003-05-16 2003-05-16 Liquid ring gas pump
TW093112251A TWI274108B (en) 2003-05-16 2004-04-30 Liquid ring gas pump
CNB2004800134388A CN100404868C (en) 2003-05-16 2004-05-04 Liquid ring pump
JP2006529735A JP4324614B2 (en) 2003-05-16 2004-05-04 Liquid ring gas pump
CA002523958A CA2523958C (en) 2003-05-16 2004-05-04 Liquid ring pump
US10/556,748 US7648344B2 (en) 2003-05-16 2004-05-04 Liquid ring pump
PCT/EP2004/004742 WO2004102002A1 (en) 2003-05-16 2004-05-04 Liquid ring pump
MYPI20041827A MY137027A (en) 2003-05-16 2004-05-14 Liquid ring gas pump
HK05103930A HK1071182A1 (en) 2003-05-16 2005-05-10 Liquid ring gas pump
ZA200507202A ZA200507202B (en) 2003-05-16 2005-09-07 Liquid ring pump
NO20054680A NO20054680L (en) 2003-05-16 2005-10-12 Ring-shaped liquid pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03011219A EP1477682B1 (en) 2003-05-16 2003-05-16 Liquid ring gas pump

Publications (2)

Publication Number Publication Date
EP1477682A1 true EP1477682A1 (en) 2004-11-17
EP1477682B1 EP1477682B1 (en) 2008-04-09

Family

ID=33016919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03011219A Expired - Lifetime EP1477682B1 (en) 2003-05-16 2003-05-16 Liquid ring gas pump

Country Status (16)

Country Link
US (1) US7648344B2 (en)
EP (1) EP1477682B1 (en)
JP (1) JP4324614B2 (en)
CN (1) CN100404868C (en)
AT (1) ATE391852T1 (en)
CA (1) CA2523958C (en)
DE (1) DE50309581D1 (en)
DK (1) DK1477682T3 (en)
ES (1) ES2303574T3 (en)
HK (1) HK1071182A1 (en)
MY (1) MY137027A (en)
NO (1) NO20054680L (en)
PT (1) PT1477682E (en)
TW (1) TWI274108B (en)
WO (1) WO2004102002A1 (en)
ZA (1) ZA200507202B (en)

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DE102008009647A1 (en) * 2008-02-18 2009-08-20 Christian Dr. Koch Sludge reactor pump for simultaneous transport of solids, liquids, vapors and gases

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
GB2559330A (en) * 2017-01-26 2018-08-08 Ecofuel Tech Ltd Reaction pump, system and method for thermal conversion hydrocarbons
CN113202764B (en) * 2017-01-30 2023-02-28 株式会社荏原制作所 Liquid-sealed vacuum pump
KR101803843B1 (en) * 2017-08-24 2017-12-04 주식회사 백콤 Water ring vacuum pump for component change type

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DE3617344A1 (en) * 1986-05-23 1987-11-26 Siemens Ag METHOD FOR PRODUCING A CONTROL DISC OR A CONTROL SHIELD FOR A LIQUID RING MACHINE FOR MORE AGGRESSIVE MEDIA
DE19758340A1 (en) * 1997-12-22 1999-07-08 Gardner Denver Wittig Gmbh Multi-flow liquid ring pump
DE10121800C1 (en) * 2001-05-04 2002-08-22 Siemens Ag Liquid ring pump and control disc for a liquid ring pump

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DE102008009647B4 (en) * 2008-02-18 2011-04-14 Christian Dr. Koch Sludge reactor pump for simultaneous transport of solids, liquids, vapors and gases

Also Published As

Publication number Publication date
WO2004102002A1 (en) 2004-11-25
NO20054680D0 (en) 2005-10-12
US20060292000A1 (en) 2006-12-28
ES2303574T3 (en) 2008-08-16
EP1477682B1 (en) 2008-04-09
PT1477682E (en) 2008-06-24
HK1071182A1 (en) 2005-07-08
NO20054680L (en) 2005-12-02
CA2523958A1 (en) 2004-11-25
CN1791751A (en) 2006-06-21
ATE391852T1 (en) 2008-04-15
CN100404868C (en) 2008-07-23
JP2007502387A (en) 2007-02-08
TW200506215A (en) 2005-02-16
TWI274108B (en) 2007-02-21
ZA200507202B (en) 2006-05-31
JP4324614B2 (en) 2009-09-02
DK1477682T3 (en) 2008-07-28
DE50309581D1 (en) 2008-05-21
CA2523958C (en) 2008-03-18
MY137027A (en) 2008-12-31
US7648344B2 (en) 2010-01-19

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