EP2558726B1 - Compressor flange for screw-type compressor - Google Patents

Compressor flange for screw-type compressor Download PDF

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Publication number
EP2558726B1
EP2558726B1 EP11716393.1A EP11716393A EP2558726B1 EP 2558726 B1 EP2558726 B1 EP 2558726B1 EP 11716393 A EP11716393 A EP 11716393A EP 2558726 B1 EP2558726 B1 EP 2558726B1
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EP
European Patent Office
Prior art keywords
compressor
flange
housing
drive
compressor flange
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EP11716393.1A
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German (de)
French (fr)
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EP2558726A2 (en
EP2558726B2 (en
Inventor
Engelbert KÖCK
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Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
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Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
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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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • 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
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F04C27/006—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type pumps, e.g. gear pumps

Definitions

  • the invention relates to a compressor flange for connecting a screw compressor with a drive having the features of the preamble of claim 1. Furthermore, the invention relates to a screw compressor with such a compressor flange.
  • the connecting elements regularly comprise a connecting flange, which is connectable to a front cover of the screw compressor.
  • the front cover closes and seals the compressor housing to the outside.
  • a refrigeration compressor with horizontally flanged electric motor which in the closed version a Flange member for connecting the compressor with the electric motor comprises.
  • the compressor housing has a hub-like projection for receiving the drive shaft and for receiving a centrally arranged projection of the flange component, so that upon insertion of the flange component, the same takes place.
  • a further centering of the compressor in relation to the electric motor is intended to take place by means of a further annular step designed concentrically for the centric approach.
  • On a Gleitringwellenabdichtung is omitted here, as a certain leakage is accepted or desired.
  • a bore is provided in the flange member to supply lubricant from the electric motor to the interior of the compressor housing.
  • an adapter plate for connecting a compressor with a drive is known.
  • the adapter plate abuts a shaft bearing and provides a seal that prevents air from entering the compressor via the shaft bearing.
  • the object of the present invention is to provide a compressor flange for connecting a screw compressor with a drive, which requires little manufacturing and assembly work and combines several functions in one component.
  • the specified compressor flange for connection of a screw compressor with a drive has a central opening for receiving a shaft and / or a bearing and has a first annular contact surface for engagement with a housing of the compressor and a second annular contact surface for engagement with a housing of the drive. Furthermore, the compressor flange comprises axially and / or radially effective seals for sealing against the Compressor housing and / or the shaft, so that an open compressor housing by use of the compressor flange is closed and sealed.
  • the seals form components of the connecting flange, so that the use of separate sealing means, which must be mounted separately from the flange, is not required.
  • the compressor flange thus simultaneously assumes the function of an end cover, which is usually provided for closing and sealing a screw compressor. That is, the compressor flange takes over the connection function and a sealing and sealing function. The number of required components can therefore be reduced, so that consequently the manufacturing and assembly costs are reduced.
  • the axially and / or radially effective seals can be inserted in grooves on the compressor flange or molded or molded.
  • the seal against the shaft in the region of the bearing of the shaft, so that the seal is not exposed to dynamic stress.
  • the seal thus has a long service life.
  • the compressor flange is cup-shaped and limited in contact with the compressor housing and the housing of the drive a cavity for receiving a coupling which connects the shaft of the compressor with a shaft of the drive.
  • the housing of the coupling through the compressor flange allows the elimination of a clutch bell and thus the use of a simple coupling.
  • the number of components can be further reduced.
  • the space requirement is reduced due to the smaller overall size. Finally, weight can be saved.
  • the seals provided on the compressor flange ensure that even if a clutch bell is omitted, the clutch received in the cavity of the cup-shaped compressor flange is sufficiently protected. This protection can also be ensured if, for example, the screw compressor is used in partially submerged operation. Furthermore, the cavity can serve to receive a lubricating medium, since it is ensured via the seals of the compressor flange that no lubricating medium passes to the outside. If a lubricant leakage should occur in the area of the shaft, the cavity of the cup-shaped compressor flange serves to catch the leaked lubricant.
  • the compressor flange has an axially effective seal for sealing against the housing of the drive.
  • a tight connection of the screw compressor is ensured on the housing of the drive.
  • an annular step is formed on at least one end face of the compressor flange for centering the compressor flange with respect to the compressor housing, the shaft, the bearing and / or the housing of the drive.
  • the compressor flange at the same time has a centering function and makes additional connecting elements, for example in the form of centering pins, dispensable.
  • an annular step for centering with respect to the compressor housing and the drive is formed on both end faces of the compressor flange.
  • an axial projection for axially fixing the position of the bearing is formed on the end facing the compressor housing. That is, after Connection of the compressor flange with the compressor housing, the axial projection is supported on a radially extending surface of the bearing.
  • the axial projection can also be designed in such a way that it replaces a ring stage arranged on the compressor side for centering.
  • the axial projection is preferably used in such a manner formed in a recess formed on the compressor housing or the bearing, which is the axial approach not only axially but also radially supported.
  • the axial approach to the compressor in this way fulfills a holding and a centering function.
  • the flange may have an annular step in the form that it receives the lateral surface of the shaft bearing and fixes its axial position. As a result, a centering of the flange is reached at the camp. The latter can be achieved in that the bearing end protrudes axially beyond the compressor housing or in that the compressor housing has a corresponding recess.
  • the compressor flange can preferably be fastened by means of screws to the compressor housing.
  • bores for receiving the screws are provided in the region of the first annular abutment surface for abutment of the compressor flange on the compressor housing.
  • the end face forms in the region of the bottom of the cup-shaped compressor flange, the first annular contact surface for abutment of the compressor flange on the compressor housing.
  • the cover function of the compressor flange can be realized in a simple manner.
  • the central opening for receiving the shaft is also provided in the region of the bottom of the cup-shaped compressor flange.
  • the cavity radially delimiting and the bottom of the cup-shaped Ver Whyrflansches opposite end face forms the second annular contact surface for abutment of the compressor flange on the housing of the drive.
  • the compressor flange may also have openings, in particular maintenance and / or ventilation openings. These are preferably designed such that the sealing function of the compressor flange is ensured.
  • a screw compressor with a compressor flange according to the invention is also proposed, wherein the compressor flange also serves as an end cap for closing and sealing the compressor housing and as a connecting flange for connecting the compressor housing to the housing of the drive.
  • the space enclosed by the compressor flange - depending on the requirements of the type of coupling used, the type of shaft connection or other requirements resulting from the application - be designed as an open or closed compressor.
  • This shows a compression flange according to the invention in abutment with a compressor housing and a housing of a drive.
  • the single FIGURE shows the section of a screw compressor 2 in the region of the connection to a drive 3, the connection being effected via a compressor flange 1.
  • the compressor flange 1 combines several functions in one component, since it not only establishes a connection between the compressor 2 and the drive 3, but also at its end faces 16, 17 annular stages 14, 15 at the same time a centering of the compressor 2 with respect to the drive 3 allows.
  • the compressor flange 1 replaces a front cover for closing and sealing the housing 8 of the compressor 2, in a first annular bearing surface 7 for abutment of the compressor flange 1 on Compressor housing 8 an axially effective seal 11 is inserted.
  • the compressor flange 1 seals against a shaft 5 of the compressor 2, which is passed through a central opening 4 of the compressor flange 1.
  • a radially effective seal 12 is embedded in the compressor flange 1 in the region of the central opening 4.
  • the radially effective seal 12 is sealingly against a bearing 6, which is provided for supporting the shaft 5 of the compressor 2.
  • the seal against the shaft 5 of the compressor 2 thus takes place indirectly via the bearing 6. This has the advantage that the radially effective seal 12 is not exposed to any dynamic load.
  • Another axially effective seal 13 is provided in the end face 17 for sealing the compressor flange 1 relative to the housing 10 of the drive 3.
  • the end face 17 also forms a second annular abutment surface 9 for abutment of the compressor flange 1 on the housing 10 of the drive 3.
  • screws 19 are provided which are guided by bores in the end face 16 for screwing the compressor flange 1 to the compressor housing 8. The screws 19 ensure an axial bias of the compressor flange 1 relative to the compressor housing 8, wherein the axially effective seal 11 is pressed against the compressor housing 8.
  • the annular step 14 in the region of the end face 16 is formed in the illustrated embodiment as an axial projection 18, by means of which the bearing 6 is held in position.
  • the compressor flange 1 further fulfills a holding function, wherein the holding of the bearing 6 is ensured by the connection by means of the screws 19.
  • the axial projection 18 engages positively in an annular recess of the compressor housing 8.
  • an axial receptacle 23 for axially fixing the position of the bearing 6 in the compressor flange may also be formed in the region of the end face 16.
  • the bearing 6 is designed such that it protrudes in the axial direction, so that it is at least partially inserted into the axial recess 23 (not shown).
  • the compressor flange 1 of the illustrated embodiment is further cup-shaped, so that between a bottom portion which is struck axially on the compressor housing 8 and a side wall portion, a cavity 20 is formed, which in the present recording of a coupling 21 for connecting the shaft 5 of the compressor 2 with the shaft 22 of the drive 3 is used.
  • the compressor flange 1 thus also assumes a protective function, which makes the arrangement of a clutch bell dispensable.
  • the seals 11, 13 ensure that the cavity 20 formed between the compressor 2 and the drive 3 is sealed to the outside.
  • the compressor flange according to the invention shown in the figure thus can combine the functions of a front cover, a flange and a protective cover in itself, while he takes care of a centering, holding and sealing function. All these functions are realized by a single component, so that the number of required components can be significantly reduced and the manufacturing and assembly costs can be significantly reduced. At the same time size and weight of a screw compressor are reduced, so that this requires less space.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft ein Verdichterflansch zur Verbindung eines Schraubenverdichters mit einem Antrieb mit den Merkmalen des Oberbegriffs des Anspruchs 1. Ferner betrifft die Erfindung einen Schraubenverdichter mit einem solchen Verdichterflansch.The invention relates to a compressor flange for connecting a screw compressor with a drive having the features of the preamble of claim 1. Furthermore, the invention relates to a screw compressor with such a compressor flange.

Derzeit verfügbare Schraubenkompressoren weisen zur Verbindung mit einem Antrieb Verbindungselemente auf, die zur Zentrierung mit einem Zentrierbund oder Zentrierstiften versehen sind. Die Verbindungselemente umfassen regelmäßig einen Verbindungsflansch, der mit einem Stirndeckel des Schraubenkompressors verbindbar ist. Der Stirndeckel schließt und dichtet das Verdichtergehäuse nach außen ab. Es sind somit regelmäßig mehrere Bauteile erforderlich, die zur Verbindung des Schraubenkompressors mit einem Antrieb entsprechend positioniert und befestigt werden müssen. Der Fertigungs- und Montageaufwand ist somit sehr hoch.Currently available screw compressors for connection to a drive on connecting elements, which are provided for centering with a centering or centering pins. The connecting elements regularly comprise a connecting flange, which is connectable to a front cover of the screw compressor. The front cover closes and seals the compressor housing to the outside. There are thus regularly required several components that must be positioned and fastened to connect the screw compressor with a drive accordingly. The production and assembly costs are therefore very high.

Stand der TechnikState of the art

Aus der Auslegeschrift DE 10 44 122 A geht ein Kälteverdichter mit waagerecht angeflanschtem Elektromotor hervor, der in der geschlossenen Ausführung ein Flanschbauteil zur Verbindung des Verdichters mit dem Elektromotor umfasst. Das Verdichtergehäuse weist einen nabenartigen Ansatz zur Aufnahme der Antriebswelle und zur Aufnahme eines zentrisch angeordneten Ansatzes des Flanschbauteils auf, so dass bei Einsetzen des Flanschbauteils eine Zentrierung desselben erfolgt. Durch eine weitere zum zentrischen Ansatz konzentrisch ausgebildete Ringstufe soll eine Zentrierung des Verdichters in Bezug auf den Elektromotor erfolgen. Auf eine Gleitringwellenabdichtung wird vorliegend verzichtet, da eine gewisse Leckage hingenommen wird bzw. erwünscht ist. Des Weiteren ist eine Bohrung im Flanschbauteil vorgesehen, um Schmiermittel aus dem Elektromotor dem Innern des Verdichtergehäuses zuzuführen.From the layout DE 10 44 122 A goes out a refrigeration compressor with horizontally flanged electric motor, which in the closed version a Flange member for connecting the compressor with the electric motor comprises. The compressor housing has a hub-like projection for receiving the drive shaft and for receiving a centrally arranged projection of the flange component, so that upon insertion of the flange component, the same takes place. A further centering of the compressor in relation to the electric motor is intended to take place by means of a further annular step designed concentrically for the centric approach. On a Gleitringwellenabdichtung is omitted here, as a certain leakage is accepted or desired. Furthermore, a bore is provided in the flange member to supply lubricant from the electric motor to the interior of the compressor housing.

Aus der WO 2004/053311 A1 ist ferner eine Adapterplatte zur Verbindung eines Verdichters mit einem Antrieb bekannt. Die Adapterplatte liegt an einem Wellenlager an und stellt eine Adichtung dar, die verhindert, dass über das Wellenlager Luft in den Verdichter gelangt.From the WO 2004/053311 A1 Furthermore, an adapter plate for connecting a compressor with a drive is known. The adapter plate abuts a shaft bearing and provides a seal that prevents air from entering the compressor via the shaft bearing.

Aus den Druckschriften US 2005/0123415 A1 , DE 7 927 054 U1 und EP 0 048 095 A1 sind darüber hinaus weitere Flanschbauteile bekannt, die eine Verbindung eines Verdichters mit einem Antrieb ermöglichen.From the pamphlets US 2005/0123415 A1 . DE 7 927 054 U1 and EP 0 048 095 A1 In addition, further flange components are known which allow a connection of a compressor with a drive.

Aufgabe der vorliegenden Erfindung ist es, einen Verdichterflansch zur Verbindung eines Schraubenverdichters mit einem Antrieb bereitzustellen, der einen geringen Fertigungs- und Montageaufwand erfordert und mehrere Funktionen in einem Bauteil vereint.The object of the present invention is to provide a compressor flange for connecting a screw compressor with a drive, which requires little manufacturing and assembly work and combines several functions in one component.

Die Aufgabe wird gelöst durch einen Verdichterflansch mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen der Erfindung werden in den auf Anspruch 1 direkt oder indirekt rückbezogenen Unteransprüchen angegeben. Des Weiteren wird ein Schraubenverdichter mit einem solchen Verdichterflansch zur Lösung der Aufgabe vorgeschlagen.The object is achieved by a compressor flange with the features of claim 1. Advantageous developments of the invention are specified in the dependent claim 1 directly or indirectly dependent claims. Furthermore, a screw compressor with such a compressor flange is proposed for achieving the object.

Offenbarung der ErfindungDisclosure of the invention

Der angegebene Verdichterflansch zur Verbindung eines Schraubenverdichters mit einem Antrieb weist eine zentrale Öffnung zur Aufnahme einer Welle und/oder eines Lagers auf und besitzt eine erste ringförmige Anlagefläche zur Anlage an einem Gehäuse des Verdichters und eine zweite ringförmige Anlagefläche zur Anlage an einem Gehäuse des Antriebs. Ferner umfasst der Verdichterflansch axial und/oder radial wirksame Dichtungen zur Abdichtung gegenüber dem Verdichtergehäuse und/oder der Welle, so dass ein offenes Verdichtergehäuse durch Einsatz des Verdichterflansches verschließbar und abdichtbar ist. Die Dichtungen bilden Bestandteile des Verbindungsflansches aus, so dass der Einsatz separater Dichtmittel, die getrennt vom Flanschbauteil montiert werden müssen, nicht erforderlich ist. Der Verdichterflansch übernimmt somit gleichzeitig die Funktion eines Stirndeckels, der üblicherweise zum Verschließen und Abdichten eines Schraubenverdichters vorgesehen ist. D.h., der Verdichterflansch übernimmt neben der Verbindungsfunktion auch eine Verschluss- und eine Abdichtungsfunktion. Die Anzahl der erforderlichen Bauteile kann demnach reduziert werden, so dass folglich auch der Fertigungs- und der Montageaufwand verringert werden.The specified compressor flange for connection of a screw compressor with a drive has a central opening for receiving a shaft and / or a bearing and has a first annular contact surface for engagement with a housing of the compressor and a second annular contact surface for engagement with a housing of the drive. Furthermore, the compressor flange comprises axially and / or radially effective seals for sealing against the Compressor housing and / or the shaft, so that an open compressor housing by use of the compressor flange is closed and sealed. The seals form components of the connecting flange, so that the use of separate sealing means, which must be mounted separately from the flange, is not required. The compressor flange thus simultaneously assumes the function of an end cover, which is usually provided for closing and sealing a screw compressor. That is, the compressor flange takes over the connection function and a sealing and sealing function. The number of required components can therefore be reduced, so that consequently the manufacturing and assembly costs are reduced.

Die axial und/oder radial wirksamen Dichtungen können in Nuten am Verdichterflansch eingesetzt oder angespritzt bzw. angeformt sein. Vorzugsweise erfolgt die Abdichtung gegenüber der Welle im Bereich des Lagers der Welle, so dass die Dichtung keiner dynamischen Belastung ausgesetzt ist. Die Dichtung weist somit eine hohe Lebensdauer auf.The axially and / or radially effective seals can be inserted in grooves on the compressor flange or molded or molded. Preferably, the seal against the shaft in the region of the bearing of the shaft, so that the seal is not exposed to dynamic stress. The seal thus has a long service life.

Erfindungsgemäß ist der Verdichterflansch topfförmig ausgebildet und begrenzt in Anlage am Verdichtergehäuse und am Gehäuse des Antriebs einen Hohlraum zur Aufnahme einer Kupplung, welche die Welle des Verdichters mit einer Welle des Antriebs verbindet. Die Einhausung der Kupplung durch den Verdichterflansch ermöglicht den Wegfall einer Kupplungsglocke und damit den Einsatz einer einfachen Kupplung. Somit kann die Anzahl der Bauteil weiter reduziert werden. Ferner verringert sich der Platzbedarf, aufgrund der geringeren Gesamtbaugröße. Schließlich kann auch Gewicht eingespart werden.According to the compressor flange is cup-shaped and limited in contact with the compressor housing and the housing of the drive a cavity for receiving a coupling which connects the shaft of the compressor with a shaft of the drive. The housing of the coupling through the compressor flange allows the elimination of a clutch bell and thus the use of a simple coupling. Thus, the number of components can be further reduced. Furthermore, the space requirement is reduced due to the smaller overall size. Finally, weight can be saved.

Mit einer Reduzierung der Anzahl der Bauteile geht ferner ein reduzierter Montageaufwand einher, da weniger Bauteile zueinander ausgerichtet und miteinander befestigt werden müssen. Zudem reduzieren sich die Stellen, die zusätzlich abgedichtet werden müssen. Auch eine Aufsummierung von Fertigungs-und/oder Montagetoleranzen wird hierdurch sicher vermieden.With a reduction in the number of components is also accompanied by a reduced assembly costs, since fewer components aligned with each other and must be secured together. In addition, reduce the bodies that must be additionally sealed. An accumulation of manufacturing and / or assembly tolerances is thereby avoided.

Die am Verdichterflansch vorgesehenen Dichtungen gewährleisten auch bei Wegfall einer Kupplungsglocke, dass die im Hohlraum des topfförmigen Verdichterflansches aufgenommene Kupplung ausreichend geschützt ist. Dieser Schutz kann auch gewährleistet werden, wenn beispielsweise der Einsatz des Schraubenverdichters in teilweise eingetauchtem Betrieb erfolgt. Des Weiteren kann der Hohlraum zur Aufnahme eines Schmiermediums dienen, da über die Dichtungen des Verdichterflansches sichergestellt ist, dass kein Schmiermedium nach außen gelangt. Sofern im Bereich der Welle eine Schmiermittelleckage auftreten sollte, dient der Hohlraum des topfförmigen Verdichterflansches dem Auffangen des ausgetretenen Schmiermittels.The seals provided on the compressor flange ensure that even if a clutch bell is omitted, the clutch received in the cavity of the cup-shaped compressor flange is sufficiently protected. This protection can also be ensured if, for example, the screw compressor is used in partially submerged operation. Furthermore, the cavity can serve to receive a lubricating medium, since it is ensured via the seals of the compressor flange that no lubricating medium passes to the outside. If a lubricant leakage should occur in the area of the shaft, the cavity of the cup-shaped compressor flange serves to catch the leaked lubricant.

Bevorzugt ist ferner vorgesehen, dass der Verdichterflansch eine axial wirksame Dichtung zur Abdichtung gegenüber dem Gehäuse des Antriebs besitzt. Somit ist auch ein dichter Anschluss des Schraubenverdichters am Gehäuse des Antriebs gewährleistet.Preferably, it is further provided that the compressor flange has an axially effective seal for sealing against the housing of the drive. Thus, a tight connection of the screw compressor is ensured on the housing of the drive.

Des Weiteren bevorzugt ist eine Ringstufe an wenigstens einer Stirnfläche des Verdichterflansches zur Zentrierung des Verdichterflansches in Bezug auf das Verdichtergehäuse, die Welle, das Lager und/oder das Gehäuse des Antriebs ausgebildet. Somit weist der Verdichterflansch zugleich eine Zentrierfunktion auf und macht weitere Verbindungselemente, beispielsweise in Form von Zentrierstiften, entbehrlich. Vorzugsweise ist an beiden Stirnflächen des Verdichterflansches jeweils eine Ringstufe zur Zentrierung gegenüber dem Verdichtergehäuse und dem Antrieb ausgebildet.Further preferably, an annular step is formed on at least one end face of the compressor flange for centering the compressor flange with respect to the compressor housing, the shaft, the bearing and / or the housing of the drive. Thus, the compressor flange at the same time has a centering function and makes additional connecting elements, for example in the form of centering pins, dispensable. Preferably, an annular step for centering with respect to the compressor housing and the drive is formed on both end faces of the compressor flange.

Vorteilhafterweise ist an der dem Verdichtergehäuse zugewandten Stirnfläche ein axialer Ansatz zur axialen Lagefixierung des Lagers ausgebildet. D.h., dass nach Verbindung des Verdichterflansches mit dem Verdichtergehäuse der axiale Ansatz an einer radial verlaufenden Fläche des Lagers abgestützt ist. Der axiale Ansatz kann ferner derart ausgebildet sein, dass er eine verdichterseitig angeordnete Ringstufe zur Zentrierung ersetzt. Hierzu ist der axiale Ansatz vorzugsweise derart in eine am Verdichtergehäuse oder dem Lager ausgebildete Ausnehmung einsetzbar, das der axiale Ansatz nicht nur axial, sondern auch radial abgestützt ist. Der axiale Ansatz am Verdichterflansch erfüllt auf diese Weise eine Halte- und eine Zentrierfunktion.Advantageously, an axial projection for axially fixing the position of the bearing is formed on the end facing the compressor housing. That is, after Connection of the compressor flange with the compressor housing, the axial projection is supported on a radially extending surface of the bearing. The axial projection can also be designed in such a way that it replaces a ring stage arranged on the compressor side for centering. For this purpose, the axial projection is preferably used in such a manner formed in a recess formed on the compressor housing or the bearing, which is the axial approach not only axially but also radially supported. The axial approach to the compressor in this way fulfills a holding and a centering function.

Alternativ kann auch der Flansch eine Ringstufe in der Form aufweisen, dass diese die Mantelfläche des Wellenlagers aufnimmt und dessen axiale Position fixiert. Hierdurch wird auch eine Zentrierung des Flansches am Lager erreicht. Letzteres kann dadurch erreicht werden, dass das Lagerende axial über das Verdichtergehäuse herausragt oder dadurch, dass das Verdichtergehäuse eine entsprechende Ausnehmung aufweist.Alternatively, the flange may have an annular step in the form that it receives the lateral surface of the shaft bearing and fixes its axial position. As a result, a centering of the flange is reached at the camp. The latter can be achieved in that the bearing end protrudes axially beyond the compressor housing or in that the compressor housing has a corresponding recess.

Der Verdichterflansch ist vorzugsweise mittels Schrauben am Verdichtergehäuse befestigbar. Hierzu sind im Bereich der ersten ringförmigen Anlagefläche zur Anlage des Verdichterflansches am Verdichtergehäuse Bohrungen zur Aufnahme der Schrauben vorgesehen.The compressor flange can preferably be fastened by means of screws to the compressor housing. For this purpose, bores for receiving the screws are provided in the region of the first annular abutment surface for abutment of the compressor flange on the compressor housing.

Vorzugsweise bildet die Stirnfläche im Bereich des Bodens des topfförmigen Verdichterflansches die erste ringförmige Anlagefläche zur Anlage des Verdichterflansches am Verdichtergehäuse aus. Somit kann in einfacher Weise die Deckelfunktion des Verdichterflansches realisiert werden. Die zentrale Öffnung zur Aufnahme der Welle ist ebenfalls im Bereich des Bodens des topfförmigen Verdichterflansches vorgesehen. Weiterhin vorzugsweise bildet die den Hohlraum radial begrenzende und dem Boden des topfförmigen Verdichterflansches gegenüberliegende Stirnfläche die zweite ringförmige Anlagefläche zur Anlage des Verdichterflansches am Gehäuse des Antriebs aus.Preferably, the end face forms in the region of the bottom of the cup-shaped compressor flange, the first annular contact surface for abutment of the compressor flange on the compressor housing. Thus, the cover function of the compressor flange can be realized in a simple manner. The central opening for receiving the shaft is also provided in the region of the bottom of the cup-shaped compressor flange. Further preferably, the cavity radially delimiting and the bottom of the cup-shaped Verdichterflansches opposite end face forms the second annular contact surface for abutment of the compressor flange on the housing of the drive.

Zur Wartung und/oder zur Entlüftung des Schraubenverdichters kann der Verdichterflansch ferner Öffnungen, insbesondere Wartungs- und/oder Entlüftungsöffnungen, besitzen. Diese sind vorzugsweise derart ausgebildet, dass die Dichtfunktion des Verdichterflansches gewährleistet bleibt.For maintenance and / or venting of the screw compressor, the compressor flange may also have openings, in particular maintenance and / or ventilation openings. These are preferably designed such that the sealing function of the compressor flange is ensured.

Zur Lösung der Aufgabe wird ferner ein Schraubenverdichter mit einem erfindungsgemäßen Verdichterflansch vorgeschlagen, wobei der Verdichterflansch zugleich als Stirndeckel zum Verschließen und Abdichten des Verdichtergehäuses und als Verbindungsflansch zur Verbindung des Verdichtergehäuses mit dem Gehäuse des Antriebes dient. Dabei kann der vom Verdichterflansch umschlossene Raum - in Abhängigkeit von den Anforderungen der verwendeten Kupplungsart, der Art der Wellenverbindung oder weiteren sich aus der Anwendung ergebenden Anforderungen - als offener oder geschlossener Verdichter ausgeführt sein.To solve the problem, a screw compressor with a compressor flange according to the invention is also proposed, wherein the compressor flange also serves as an end cap for closing and sealing the compressor housing and as a connecting flange for connecting the compressor housing to the housing of the drive. In this case, the space enclosed by the compressor flange - depending on the requirements of the type of coupling used, the type of shaft connection or other requirements resulting from the application - be designed as an open or closed compressor.

Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der einzigen Figur näher erläutert. Diese zeigt einen erfindungsgemäßen Verdichtungsflansch in Anlage an einen Verdichtergehäuse und einem Gehäuse eines Antriebs.A preferred embodiment of the invention will be explained in more detail with reference to the single figure. This shows a compression flange according to the invention in abutment with a compressor housing and a housing of a drive.

Ausführliche Beschreibung der ZeichnungDetailed description of the drawing

Die einzige Figur zeigt den Ausschnitt eines Schraubenverdichters 2 im Bereich des Anschlusses an einen Antrieb 3, wobei der Anschluss über einen Verdichterflansch 1 bewirkt wird. Der Verdichterflansch 1 vereint mehrere Funktionen in einem Bauteil, da er nicht nur eine Verbindung zwischen dem Verdichter 2 und dem Antrieb 3 herstellt, sondern über an seinen Stirnflächen 16, 17 ausgebildete Ringstufen 14, 15 gleichzeitig eine Zentrierung des Verdichters 2 in Bezug auf den Antrieb 3 ermöglicht. Zugleich ersetzt der Verdichterflansch 1 einen Stirndeckel zum Verschließen und Abdichten des Gehäuses 8 des Verdichters 2, indem in einer ersten ringförmigen Anlagefläche 7 zur Anlage des Verdichterflansches 1 am Verdichtergehäuse 8 eine axial wirksame Dichtung 11 eingelassen ist. Des Weiteren dichtet der Verdichterflansch 1 gegenüber einer Welle 5 des Verdichters 2 ab, welche durch eine zentrale Öffnung 4 des Verdichterflansches 1 hindurchgeführt ist. Hierzu ist im Bereich der zentralen Öffnung 4 eine radial wirksame Dichtung 12 im Verdichterflansch 1 eingelassen. Die radial wirksame Dichtung 12 liegt dichtend an einem Lager 6 an, das zur Lagerung der Welle 5 des Verdichters 2 vorgesehen ist. Die Abdichtung gegenüber der Welle 5 des Verdichters 2 erfolgt somit mittelbar über das Lager 6. Dies hat den Vorteil, dass die radial wirksame Dichtung 12 keiner dynamischen Belastung ausgesetzt ist.The single FIGURE shows the section of a screw compressor 2 in the region of the connection to a drive 3, the connection being effected via a compressor flange 1. The compressor flange 1 combines several functions in one component, since it not only establishes a connection between the compressor 2 and the drive 3, but also at its end faces 16, 17 annular stages 14, 15 at the same time a centering of the compressor 2 with respect to the drive 3 allows. At the same time, the compressor flange 1 replaces a front cover for closing and sealing the housing 8 of the compressor 2, in a first annular bearing surface 7 for abutment of the compressor flange 1 on Compressor housing 8 an axially effective seal 11 is inserted. Furthermore, the compressor flange 1 seals against a shaft 5 of the compressor 2, which is passed through a central opening 4 of the compressor flange 1. For this purpose, a radially effective seal 12 is embedded in the compressor flange 1 in the region of the central opening 4. The radially effective seal 12 is sealingly against a bearing 6, which is provided for supporting the shaft 5 of the compressor 2. The seal against the shaft 5 of the compressor 2 thus takes place indirectly via the bearing 6. This has the advantage that the radially effective seal 12 is not exposed to any dynamic load.

Eine weitere axial wirksame Dichtung 13 ist in der Stirnfläche 17 zur Abdichtung des Verdichterflansches 1 gegenüber dem Gehäuse 10 des Antriebs 3 vorgesehen. Die Stirnfläche 17 bildet zudem eine zweite ringförmige Anlagefläche 9 zur Anlage des Verdichterflansches 1 am Gehäuse 10 des Antriebs 3 aus. Zur Fixierung des Verdichterflansches 1 am Verdichtergehäuse 8 sind Schrauben 19 vorgesehen, die durch Bohrungen in der Stirnfläche 16 zur Verschraubung des Verdichterflansches 1 mit dem Verdichtergehäuse 8 geführt werden. Die Schrauben 19 gewährleisten eine axiale Vorspannung des Verdichterflansches 1 gegenüber dem Verdichtergehäuse 8, wobei auch die axial wirksame Dichtung 11 an das Verdichtergehäuse 8 gedrückt wird.Another axially effective seal 13 is provided in the end face 17 for sealing the compressor flange 1 relative to the housing 10 of the drive 3. The end face 17 also forms a second annular abutment surface 9 for abutment of the compressor flange 1 on the housing 10 of the drive 3. For fixing the compressor flange 1 on the compressor housing 8 screws 19 are provided which are guided by bores in the end face 16 for screwing the compressor flange 1 to the compressor housing 8. The screws 19 ensure an axial bias of the compressor flange 1 relative to the compressor housing 8, wherein the axially effective seal 11 is pressed against the compressor housing 8.

Die Ringstufe 14 im Bereich der Stirnfläche 16 ist bei der dargestellten Ausführungsform als axialer Ansatz 18 ausgebildet, mittels derer das Lager 6 in Position gehalten wird. Somit erfüllt der Verdichterflansch 1 ferner eine Haltefunktion, wobei das Halten des Lagers 6 durch die Verbindung mittels der Schrauben 19 gewährleistet wird. Der axiale Ansatz 18 greift hierzu formschlüssig in eine ringförmige Ausnehmung des Verdichtergehäuses 8 ein. Somit ist gleichzeitig über den axialen Ansatz 18 auch eine Zentrierung des Verdichterflansches gegenüber dem Verdichtergehäuse 8 und/oder der Welle 5 des Verdichters 2 gegeben.The annular step 14 in the region of the end face 16 is formed in the illustrated embodiment as an axial projection 18, by means of which the bearing 6 is held in position. Thus, the compressor flange 1 further fulfills a holding function, wherein the holding of the bearing 6 is ensured by the connection by means of the screws 19. For this purpose, the axial projection 18 engages positively in an annular recess of the compressor housing 8. Thus, a centering of the compressor flange relative to the compressor housing 8 and / or the shaft 5 of the compressor 2 is given at the same time via the axial projection 18.

Alternativ oder ergänzend zum axialen Ansatz 18 kann im Bereich der Stirnfläche 16 zudem eine axiale Aufnahme 23 zur axialen Lagefixierung des Lagers 6 im Verdichterflansch ausgebildet sein. Vorteilhafterweise ist hierzu das Lager 6 derart ausgebildet, dass es in axialer Richtung vorsteht, so dass es in die axiale Ausnehmung 23 zumindest teilweise einsetzbar ist (nicht dargestellt).As an alternative or in addition to the axial projection 18, an axial receptacle 23 for axially fixing the position of the bearing 6 in the compressor flange may also be formed in the region of the end face 16. Advantageously, for this purpose, the bearing 6 is designed such that it protrudes in the axial direction, so that it is at least partially inserted into the axial recess 23 (not shown).

Der Verdichterflansch 1 der dargestellten Ausführungsform ist ferner topfförmig ausgebildet, so dass zwischen einem Bodenbereich, der axial an dem Verdichtergehäuse 8 angeschlagen ist und einem Seitenwandbereich ein Hohlraum 20 ausgebildet wird, der vorliegend der Aufnahme einer Kupplung 21 zur Verbindung der Welle 5 des Verdichters 2 mit der Welle 22 des Antriebs 3 dient. Der Verdichterflansch 1 übernimmt somit auch eine Schutzfunktion, welche die Anordnung einer Kupplungsglocke entbehrlich macht. Die Dichtungen 11, 13 stellen dabei sicher, dass der zwischen dem Verdichter 2 und dem Antrieb 3 ausgebildete Hohlraum 20 nach außen abgedichtet ist.The compressor flange 1 of the illustrated embodiment is further cup-shaped, so that between a bottom portion which is struck axially on the compressor housing 8 and a side wall portion, a cavity 20 is formed, which in the present recording of a coupling 21 for connecting the shaft 5 of the compressor 2 with the shaft 22 of the drive 3 is used. The compressor flange 1 thus also assumes a protective function, which makes the arrangement of a clutch bell dispensable. The seals 11, 13 ensure that the cavity 20 formed between the compressor 2 and the drive 3 is sealed to the outside.

Der in der Figur dargestellte erfindungsgemäße Verdichterflansch vermag somit die Funktionen eines Stirndeckels, eines Flansches und einer Schutzhaube in sich zu vereinen, wobei er gleichzeitig eine Zentrier-, Halte- und Dichtungsfunktion übernimmt. Alle diese Funktionen werden durch ein einziges Bauteil verwirklicht, so dass die Anzahl erforderlicher Bauteile deutlich reduziert werden und der Fertigungs- und Montageaufwand deutlich verringert werden kann. Zugleich werden Baugröße und Gewicht eines Schraubenverdichters reduziert, so dass dieser weniger Bauraum erfordert.The compressor flange according to the invention shown in the figure thus can combine the functions of a front cover, a flange and a protective cover in itself, while he takes care of a centering, holding and sealing function. All these functions are realized by a single component, so that the number of required components can be significantly reduced and the manufacturing and assembly costs can be significantly reduced. At the same time size and weight of a screw compressor are reduced, so that this requires less space.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
VerdichterflanschVerdichterflansch
22
Verdichtercompressor
33
Antriebdrive
44
zentrale Öffnungcentral opening
55
Welle des VerdichtersShaft of the compressor
66
Lagercamp
77
erste ringförmige Anlageflächefirst annular contact surface
88th
Gehäuse des VerdichtersHousing of the compressor
99
zweite ringförmige Anlageflächesecond annular contact surface
1010
Gehäuse des AntriebsHousing of the drive
1111
axial wirksame Dichtungaxially effective seal
1212
radial wirksame Dichtungradial effective seal
1313
axial wirksame Dichtungaxially effective seal
1414
Ringstufeannular step
1515
Ringstufeannular step
1616
Stirnflächeface
1717
Stirnflächeface
1818
axialer Ansatzaxial approach
1919
Schraubenscrew
2020
Hohlraumcavity
2121
Kupplungclutch
2222
Welle des AntriebsShaft of the drive
2323
Aufnahmeadmission

Claims (9)

  1. Compressor flange (1) for connecting a screw-type compressor (2) to a drive (3), the compressor flange (1) having a central orifice (4) for the reception of a shaft (5) and/or of a bearing (6), and possessing a first ring-shaped bearing surface (7) for bearing against a housing (8) of the compressor (2) and a second ring-shaped bearing surface (9) for bearing against a housing (10) of the drive (3), wherein the compressor flange (1) comprises, furthermore, axially and/or radially active seals (11, 12) for sealing off with respect to the compressor housing (8) and/or to the shaft (5), so that an open compressor housing (8) can be closed and sealed off, using the compressor flange (1), characterized in that the compressor flange (1) is of pot-shaped design and, when bearing against the compressor housing (8) and against the housing (10) of the drive (3), delimits a cavity (20) for receiving a clutch (21) which connects the shaft (5) of the compressor (2) to a shaft (22) of the drive (3).
  2. Compressor flange according to Claim 1, characterized in that the compressor flange (1) possesses, furthermore, an axially active seal (13) for sealing off with respect to the housing (10) of the drive (3).
  3. Compressor flange according to Claim 1 or 2, characterized in that an annular step (14, 15) is formed on at least one end face (16, 17) of the compressor flange (1) for the purpose of centering the compressor flange (1) with respect to the compressor housing (8), to the shaft (5) and/or to the housing (10) of the drive (3).
  4. Compressor flange according to one of the preceding claims, characterized in that an axial extension (18) for fixing the axial position of the bearing (6) is formed on the end face (16) facing the compressor housing (8).
  5. Compressor flange according to one of the preceding claims, characterized in that an axial receptacle (23) for fixing the axial position of the bearing (6) is formed on the end face (16) facing the compressor housing (8).
  6. Compressor flange according to one of the preceding claims, characterized in that the compressor flange (1) can be fastened to the compressor housing (8) by means of screws (19).
  7. Compressor flange according to one of the preceding claims, characterized in that the end face (16) forms, in the region of the bottom of the pot-shaped compressor flange (1), the first ring-shaped bearing surface (7), and the end face (17) radially delimiting the cavity (20) and lying opposite the bottom forms the second ring-shaped bearing surface (8).
  8. Compressor flange according to one of the preceding claims, characterized in that the compressor flange (1) possesses, furthermore, orifices, in particular maintenance and/or bleeding orifices.
  9. Screw-type compressor having a compressor flange (1) according to one of the preceding claims, the compressor flange (1) serving at the same time as an end cover for closing and sealing off the compressor housing (8) and as a connecting flange for connecting the compressor housing (8) to the housing (10) of the drive (3).
EP11716393.1A 2010-04-16 2011-04-13 Compressor flange for screw-type compressor Active EP2558726B2 (en)

Applications Claiming Priority (2)

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DE102010015151A DE102010015151A1 (en) 2010-04-16 2010-04-16 Compressor flange for screw compressors
PCT/EP2011/055754 WO2011128349A2 (en) 2010-04-16 2011-04-13 Compressor flange for screw-type compressor

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EP2558726B1 true EP2558726B1 (en) 2017-10-18
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CN (1) CN103154520B (en)
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DE102010015151A1 (en) 2010-04-16 2011-10-20 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Compressor flange for screw compressors
DE102016011442A1 (en) 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH System for a commercial vehicle comprising a screw compressor and an electric motor
DE102016011504A1 (en) 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH System for a commercial vehicle comprising a screw compressor and an electric motor
DE102016011503A1 (en) 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH System for a commercial vehicle comprising a screw compressor and an electric motor
CN106451843A (en) * 2016-10-27 2017-02-22 驰美电机（上海）有限公司 Special bearingless direct-connection sealing permanent-magnet synchronous motor with graphene winding for compressor
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CA2796626A1 (en) 2011-10-20
WO2011128349A3 (en) 2013-05-02
US9523363B2 (en) 2016-12-20
MX342998B (en) 2016-10-21
JP5868387B2 (en) 2016-02-24
CN103154520A (en) 2013-06-12
BR112012026459A2 (en) 2016-08-09
DE102010015151A1 (en) 2011-10-20
JP2013534582A (en) 2013-09-05
EP2558726A2 (en) 2013-02-20
BR112012026459B1 (en) 2021-01-26
EP2558726B2 (en) 2023-03-29
RU2561515C2 (en) 2015-08-27
RU2012148731A (en) 2014-05-27
US20130064694A1 (en) 2013-03-14
WO2011128349A2 (en) 2011-10-20
CA2796626C (en) 2018-06-26
MX2012011978A (en) 2012-12-17

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