EP1554496A1 - Compressor machine with two counter-rotating rotors - Google Patents

Compressor machine with two counter-rotating rotors

Info

Publication number
EP1554496A1
EP1554496A1 EP03809330A EP03809330A EP1554496A1 EP 1554496 A1 EP1554496 A1 EP 1554496A1 EP 03809330 A EP03809330 A EP 03809330A EP 03809330 A EP03809330 A EP 03809330A EP 1554496 A1 EP1554496 A1 EP 1554496A1
Authority
EP
European Patent Office
Prior art keywords
housing
machine according
shafts
compression machine
wall
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
EP03809330A
Other languages
German (de)
French (fr)
Other versions
EP1554496B1 (en
Inventor
Fritz-Martin Scholz
Wolf-Rüdiger WAGENER
Daniel Greiner
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.)
Gardner Denver Schopfheim GmbH
Original Assignee
Rietschle Thomas Schopfheim 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 Rietschle Thomas Schopfheim GmbH filed Critical Rietschle Thomas Schopfheim GmbH
Publication of EP1554496A1 publication Critical patent/EP1554496A1/en
Application granted granted Critical
Publication of EP1554496B1 publication Critical patent/EP1554496B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation

Definitions

  • the invention relates to a ner confusermaschine with two counter-rotating rotors, which are mounted on two parallel, spaced apart and mounted in a housing shafts, one of which is driven directly and the other by meshing gears mounted on the shafts.
  • Ner Whyrmaschinen with two counter-rotating rotors can work as compressors or vacuum pumps.
  • Such a machine with claw-like rotor blades is known from EP 1 163 450 AI, which can generate both suction air and blown air and is particularly suitable for use in the field of paper processing. Due to the internal compression of such machines, significantly higher pressure ratios can be achieved than e.g. using a roots pump.
  • a simple construction is achieved by flying arrangement of the rotors in a pot-like housing.
  • the gear unit coupling the two shafts on the one hand and the shaft bearing arrangement on the other hand are arranged in separate housing parts which have to be exactly aligned and pinned together.
  • the pot-shaped housing receiving the rotors must be pinned exactly to the gear housing. This means that pin holes have to be machined as precisely as possible from two different sides of a housing part. Inaccuracies lead to skewed shafts and thus increased bearing loads, gear noise and other malfunctions.
  • the invention provides a compressor machine in which a precise alignment of the shafts is ensured despite simplified manufacture and a reduced number of parts.
  • the compressor machine according to the invention has two rotors running in opposite directions, which are mounted on two parallel shafts spaced apart from one another and mounted in a housing. One of the waves is direct and the other through meshing, attached to the waves Gears driven.
  • the housing has two radial walls in one piece and with a peripheral wall, in which the shafts are mounted. The gear wheels are arranged between these radial walls.
  • One side wall of the housing has an opening closed by a removable cover. With the cover removed, the gears can be mounted on the shafts through this opening.
  • the bearing bores for the shafts can be machined and machined in the one-piece housing with a single set-up, eliminating any cause of misalignment with a minimal number of parts.
  • the cover closing the opening in the side wall of the housing has no influence whatsoever on the mounting of the shafts. It is a simple part that only has to close the opening and seal against oil leakage. It has been shown that avoiding even small misalignments in this way leads to better efficiency and reduced running noise.
  • FIG. 2 is an axial section of the compressor machine
  • FIG. 3 is a perspective view of a one-piece housing body of the
  • FIG. 5 is an enlarged detail view of a shaft seal
  • FIG. 6 is an axial section of an alternative embodiment of the compressor machine.
  • the compressor machine described here by way of example has rotors with claw-shaped rotor blades and can be operated both as a compressor and as a vacuum pump.
  • the housing body 12 has two radial, parallel and spaced apart walls 16, 18 which are connected to one another by a peripheral wall 20.
  • the radial wall 16 forms an outer wall.
  • the radial wall 18 forms an intermediate wall of the housing body 12 and delimits a gear chamber 22 formed between the walls 16, 18 from a working chamber 24 which receives two rotors 26, 28 with claw-like rotor blades.
  • the rotor 26 is overhung on an axial end of a shaft 30 which is mounted in the radial walls 16, 18. The opposite axial end of the shaft 30 is coupled directly to the output shaft of the electric motor 14.
  • the rotor 28 is overhung on an axial end of a second shaft 32, which is also mounted in the radial walls 16, 18.
  • the shafts 30, 32 are parallel and spaced apart.
  • the shafts 30, 32 are coupled to each other by two meshing gears 34, 36 arranged in the gear chamber 22, so that they rotate synchronously and in the opposite direction.
  • the housing body 12 has a side wall with an opening 38 which can be closed by a cover 40 placed on the outside.
  • This opening 38 is dimensioned such that the gears 34, 36 can be introduced into the gear chamber 22 for assembly on the shafts 30, 32 when the cover 40 is removed.
  • a bearing cover plate 42 is attached to the intermediate wall 18 on the side of the working chamber 24. At its axial end facing away from the bearing cover plate 42, the working chamber 24 is closed by a radial housing cover 44.
  • a hood 46 adjoins the housing cover 44 and encloses a fan, for example coupled to the shaft 30 or having an external drive.
  • the compressor machine described is preferably a so-called "claw compressor", that is to say a machine with claw-shaped rotor blades and with internal compression.
  • FIG. 4 shows three phases in the cycle of such a machine, namely in a) the beginning compression process, in b) 4a) is preceded by the inlet phase, in which a common inlet chamber is filled up, then divided into two subchambers and finally brought together to form a common volume, which is then brought together
  • An outlet opening, designated A is closed by one of the end faces of the lower rotor during the rotation of the rotors during the phase of the inner compression and during the inlet phase, starting from the state shown in Figure 4b), the outlet opening A is closed by the lower rotor released , so that the compressed volume can be pushed out through the outlet opening A.
  • This outlet opening leads axially through the housing cover 44 out of the working space of the compressor machine.
  • FIG. 5 shows an enlarged representation of the shaft bearing on the intermediate wall 18 and the shaft seal arranged on the bearing cover plate 42.
  • the shaft bearing consists of a double ball bearing, generally designated 50.
  • a recess 52 is formed in the bearing cover plate 42 to accommodate the shaft seal.
  • a shaft sealing ring 54 made of rubber-elastic material is arranged in the recess 52 and is in sealing contact with a pointed sealing edge 54a on the outer circumference of a sleeve 56 shrunk on the shaft 32.
  • the sleeve 56 is sealed with a sealing ring 58 against the shaft 32.
  • the sleeve 56 has a radially raised shoulder 56a, in which two sealing rings 60 are accommodated axially next to one another.
  • the sealing rings 60 seal the sleeve 56 against the inner circumference of the recess in the bearing cover plate 42. Between the sealing ring 54 and the recess in the bearing cover plate 42, an intermediate space 62 remains which is connected to a bore 64. The bore 64 leads through the bearing cover plate 42 to the outside.
  • the special feature of the shaft seal shown in FIG. 5 is that it is arranged on the bearing cover plate 42 and thus enables problem-free installation from the open end face of the basic housing body.
  • the base body of the housing is surrounded by a hood 70 which delimits axial cooling air ducts 72 with the outer circumference of the housing.
  • the cooling air ducts 72 lead from a protective grille 74 next to the housing cover 44 axially along the outer circumference of the housing to behind the transmission chamber, where they open radially inward into a fan chamber 76 in which a fan is arranged, the rotor of which is fastened to a drive shaft which is connected to the lower shaft 30 is coupled.
  • the cooling air exits radially downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • General Details Of Gearings (AREA)

Abstract

The compressor machine has two counter-rotating rotors, mounted on two parallel shafts supported in a housing at a separation from each other. One of the shafts is directly driven and the other is driven by engaging toothed gears mounted on the shafts. The housing has two radial walls embodied in one piece and with a circumferential wall, in which the shafts are supported. The toothed gears are arranged between said radial walls. A lateral wall has an opening sealed by a removable cover. The toothed gears can be mounted on the shafts through said opening with the cover removed. The bearing drillings for the shafts can be generated and machined in the one-piece housing with a single cutting, such that, by means of a minimal number of parts, any causes of alignment errors are avoided.

Description

Nerdichtermaschine mit zwei gegensinnig laufenden Rotoren Nerdichtermaschine with two rotors running in opposite directions
Die Erfindung betrifft eine Nerdichtermaschine mit zwei gegensinnig laufenden Rotoren, die auf zwei parallelen, voneinander beabstandeten und in einem Gehäuse gelagerten Wellen montiert sind, von denen eine direkt und die andere durch miteinander kämmende, auf den Wellen angebrachte Zahnräder angetrieben ist.The invention relates to a nerdichtermaschine with two counter-rotating rotors, which are mounted on two parallel, spaced apart and mounted in a housing shafts, one of which is driven directly and the other by meshing gears mounted on the shafts.
Nerdichtermaschinen mit zwei gegensinnig rotierenden Rotoren können als Verdichter oder Vakuumpumpen arbeiten. Aus der EP 1 163 450 AI ist eine solche Maschine mit klauenartigen Rotorflügeln bekannt, die sowohl Saugluft als auch Blasluft erzeugen kann und sich besonders für den Einsatz im Bereich der Papierverarbeitung eignet. Aufgrund der inneren Verdichtung derartiger Maschinen können deutlich höhere Druckverhältnisse erreicht werden als z.B. mittels einer Roots-Pumpe. Durch fliegende Anordnung der Rotoren in einem topfartigen Gehäuse wird ein einfacher Aufbau erreicht. Das die beiden Wellen koppelnde Getriebe einerseits und die Wellenlagerung andererseits sind jedoch in getrennten Gehäuseteilen angeordnet, die exakt miteinander ausgerichtet und verstiftet werden müssen. Ebenso muß das die Rotoren aufnehmende topfförmige Gehäuse exakt mit dem Getriebegehäuse verstiftet werden. Daraus ergibt sich die Notwendigkeit, Stiftbohrungen möglichst genau von zwei verschiedenen Seiten eines Gehäuseteils bearbeiten zu müssen. Ungenauigkeiten führen zu schiefstehenden Wellen und dadurch erhöhten Lagerbelastungen, Zahnradgeräuschen und anderen Fehlfunktionen.Nerdichtermaschinen with two counter-rotating rotors can work as compressors or vacuum pumps. Such a machine with claw-like rotor blades is known from EP 1 163 450 AI, which can generate both suction air and blown air and is particularly suitable for use in the field of paper processing. Due to the internal compression of such machines, significantly higher pressure ratios can be achieved than e.g. using a roots pump. A simple construction is achieved by flying arrangement of the rotors in a pot-like housing. However, the gear unit coupling the two shafts on the one hand and the shaft bearing arrangement on the other hand are arranged in separate housing parts which have to be exactly aligned and pinned together. Likewise, the pot-shaped housing receiving the rotors must be pinned exactly to the gear housing. This means that pin holes have to be machined as precisely as possible from two different sides of a housing part. Inaccuracies lead to skewed shafts and thus increased bearing loads, gear noise and other malfunctions.
Durch die Erfindung wird eine Verdichtermaschine geschaffen, bei der trotz vereinfachter Herstellung und verminderter Teilezahl eine präzise Ausrichtung der Wellen gewährleistet ist. Die erfindungsgemäße Verdichtermaschine hat zwei gegensinnig laufende Rotoren, die auf zwei parallelen, voneinander beabstandeten und in einem Gehäuse gelagerten Wellen montiert sind. Eine der Wellen ist direkt und die andere durch miteinander kämmende, auf den Wellen angebrachte Zahnräder angetrieben. Das Gehäuse hat zwei einteilig miteinander und mit einer Umfangswand ausgebildete radiale Wände, in denen die Wellen gelagert sind. Zwischen diesen radialen Wänden sind die Zahnräder angeordnet. Eine Seitenwand des Gehäuses hat eine durch einen abnehmbaren Deckel verschlossene Öffnung. Bei abgenommenem Deckel können durch diese Öffnung hindurch die Zahnräder auf den Wellen montiert werden. Die Lagerbohrungen für die Wellen können in dem einstückigen Gehäuse mit einer einzigen Aufspannung angebracht und bearbeitet werden, so daß bei minimaler Anzahl von Teilen jegliche Ursache von Ausrichtungsfehlern entfallt. Der die Öffnung in der Seitenwand des Gehäuses verschließende Deckel hat keinerlei Einfluß auf die Lagerung der Wellen. Er ist ein einfaches Teil, das lediglich die Öffnung verschließen und gegen Ölaustritt abdichten muß. Es hat sich gezeigt, dass die so ermöglichte Vermeidung selbst kleiner Fehlstellungen zu einem besseren Wirkungsgrad und verringertem Laufgeräusch führt.The invention provides a compressor machine in which a precise alignment of the shafts is ensured despite simplified manufacture and a reduced number of parts. The compressor machine according to the invention has two rotors running in opposite directions, which are mounted on two parallel shafts spaced apart from one another and mounted in a housing. One of the waves is direct and the other through meshing, attached to the waves Gears driven. The housing has two radial walls in one piece and with a peripheral wall, in which the shafts are mounted. The gear wheels are arranged between these radial walls. One side wall of the housing has an opening closed by a removable cover. With the cover removed, the gears can be mounted on the shafts through this opening. The bearing bores for the shafts can be machined and machined in the one-piece housing with a single set-up, eliminating any cause of misalignment with a minimal number of parts. The cover closing the opening in the side wall of the housing has no influence whatsoever on the mounting of the shafts. It is a simple part that only has to close the opening and seal against oil leakage. It has been shown that avoiding even small misalignments in this way leads to better efficiency and reduced running noise.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der folgendenFurther features and advantages of the invention will appear from the following
Beschreibung einer bevorzugten Ausführungsform und aus den beigefügten Zeichnungen. In den Zeichnungen zeigen:Description of a preferred embodiment and from the accompanying drawings. The drawings show:
- Figur leine Seitenansicht einer Verdichtermaschine;- Figure line side view of a compressor machine;
- Figur 2 einen Axialschnitt der Verdichtermaschine;- Figure 2 is an axial section of the compressor machine;
- Figur 3 eine Perspektivansicht eines einteiligen Gehäusekörpers der- Figure 3 is a perspective view of a one-piece housing body of the
Verdichtermaschine;Compressor machine;
- Figur 4 drei Skizzen zur Veranschaulichung einer inneren Verdichtung;- Figure 4 three sketches to illustrate an internal compression;
- Figur 5 eine vergrößerte Detailansicht einer Wellendichtung; und- Figure 5 is an enlarged detail view of a shaft seal; and
- Figur 6 einen Axialschnitt einer alternativen Ausführungsform der Verdichtermaschine. Die hier beispielshalber beschriebene Verdichtermaschine hat Rotoren mit klauenförmigen Rotorflügeln und kann sowohl als Verdichter als auch als Vakuumpumpe betrieben werden.- Figure 6 is an axial section of an alternative embodiment of the compressor machine. The compressor machine described here by way of example has rotors with claw-shaped rotor blades and can be operated both as a compressor and as a vacuum pump.
Auf einem Sockel 10 ist ein einstückig geformter Gehäusekörper 12 mit einem angeflanschten Elektromotor 14 gelagert. Der Gehäusekörper 12 hat zwei radiale, parallele und voneinander beabstandete Wände 16, 18, die durch eine Umfangswand 20 miteinander verbunden sind. Die radiale Wand 16 bildet eine Außenwand. Die radiale Wand 18 bildet eine Zwischenwand des Gehäusekörpers 12 und grenzt einen zwischen den Wänden 16, 18 gebildeten Getrieberaum 22 von einer Arbeitskammer 24 ab, die zwei Rotoren 26, 28 mit klauenartigen Rotorflügeln aufnimmt. Der Rotor 26 ist fliegend an einem axialen Ende einer Welle 30 angebracht, die in den radialen Wänden 16, 18 gelagert ist. Das entgegengesetzte axiale Ende der Welle 30 ist direkt an die Abtriebswelle des Elektromotors 14 angekoppelt. Der Rotor 28 ist fliegend an einem axialen Ende einer zweiten Welle 32 angebracht, die ebenfalls in den radialen Wänden 16, 18 gelagert ist. Die Wellen 30, 32 sind parallel und voneinander beabstandet. Die Wellen 30, 32 sind durch zwei miteinander kämmende, im Getrieberaum 22 angeordnete Zahnräder 34, 36 miteinander gekoppelt, so daß sie synchron und mit entgegengesetztem Drehsinn rotieren.An integrally formed housing body 12 with a flanged electric motor 14 is mounted on a base 10. The housing body 12 has two radial, parallel and spaced apart walls 16, 18 which are connected to one another by a peripheral wall 20. The radial wall 16 forms an outer wall. The radial wall 18 forms an intermediate wall of the housing body 12 and delimits a gear chamber 22 formed between the walls 16, 18 from a working chamber 24 which receives two rotors 26, 28 with claw-like rotor blades. The rotor 26 is overhung on an axial end of a shaft 30 which is mounted in the radial walls 16, 18. The opposite axial end of the shaft 30 is coupled directly to the output shaft of the electric motor 14. The rotor 28 is overhung on an axial end of a second shaft 32, which is also mounted in the radial walls 16, 18. The shafts 30, 32 are parallel and spaced apart. The shafts 30, 32 are coupled to each other by two meshing gears 34, 36 arranged in the gear chamber 22, so that they rotate synchronously and in the opposite direction.
Der Gehäusekörper 12 hat eine Seitenwand mit einer Öffnung 38, die durch einen von außen aufgesetzten Deckel 40 verschließbar ist. Diese Öffnung 38 ist so bemessen, daß bei abgenommenem Deckel 40 die Zahnräder 34, 36 in den Getrieberaum 22 zur Montage auf den Wellen 30, 32 eingebracht werden können.The housing body 12 has a side wall with an opening 38 which can be closed by a cover 40 placed on the outside. This opening 38 is dimensioned such that the gears 34, 36 can be introduced into the gear chamber 22 for assembly on the shafts 30, 32 when the cover 40 is removed.
Auf der Seite der Arbeitskammer 24 ist an die Zwischenwand 18 eine Lager- deckelplatte 42 angesetzt. An ihrem von der Lagerdeckelplatte 42 abgewandten axialen Ende ist die Arbeitskammer 24 durch einen radialen Gehäusedeckel 44 verschlossen. An den Gehäusedeckel 44 schließt eine Haube 46 an, die einen beispielsweise mit der Welle 30 gekoppelten oder über einen Fremdantrieb verfügenden Lüfter umschließt. Bei der beschriebenen Verdichtermaschine handelt es sich vorzugsweise um einen sog. „Klauenverdichter", also eine Maschine mit klauenförmigen Rotorflügeln und mit innerer Verdichtung. Die Figur 4 zeigt drei Phasen im Zyklus einer solchen Maschine, nämlich bei a) den beginnenden Verdichtungsprozeß, bei b) den fortgeschrittenen Verdichtungsprozeß und bei c) die Phase des Ausschiebens des verdichteten Volumens. Der in Figur 4a) gezeigten Phase geht die Einlaßphase voraus, bei der eine gemeinsame Einlaßkammer aufgefüllt, dann in zwei Teilkammern aufgeteilt und schließlich zu einem gemeinsamen Volumen zusammengeführt wird, das dann die innere Verdichtung erfährt. Eine mit A bezeichnete Auslaßöffiiung wird bei der Drehung der Rotoren während der Phase der inneren Verdichtung und während der Einlaßphase durch eine der Stirnflächen des unteren Rotors verschlossen. Beginnend mit dem in Figur 4b) gezeigten Zustand wird die Auslaßöffiiung A durch den unteren Rotor freigegeben, damit das verdichtete Volumen über die Auslaßöffiiung A ausgeschoben werden kann. Diese Auslaßöffiiung führt axial durch den Gehäusedeckel 44 aus dem Arbeitsraum der Verdichtermaschine hinaus.A bearing cover plate 42 is attached to the intermediate wall 18 on the side of the working chamber 24. At its axial end facing away from the bearing cover plate 42, the working chamber 24 is closed by a radial housing cover 44. A hood 46 adjoins the housing cover 44 and encloses a fan, for example coupled to the shaft 30 or having an external drive. The compressor machine described is preferably a so-called "claw compressor", that is to say a machine with claw-shaped rotor blades and with internal compression. FIG. 4 shows three phases in the cycle of such a machine, namely in a) the beginning compression process, in b) 4a) is preceded by the inlet phase, in which a common inlet chamber is filled up, then divided into two subchambers and finally brought together to form a common volume, which is then brought together An outlet opening, designated A, is closed by one of the end faces of the lower rotor during the rotation of the rotors during the phase of the inner compression and during the inlet phase, starting from the state shown in Figure 4b), the outlet opening A is closed by the lower rotor released , so that the compressed volume can be pushed out through the outlet opening A. This outlet opening leads axially through the housing cover 44 out of the working space of the compressor machine.
Figur 5 zeigt in vergrößerter Darstellung die Wellenlagerung an der Zwischenwand 18 und die an der Lagerdeckelplatte 42 angeordnete Wellendichtung. Die Wellenlagerung besteht aus einem allgemein mit 50 bezeichneten Doppelkugellager. Zur Aufnahme der Wellendichtung ist in der Lagerdeckelplatte 42 eine Ausnehmung 52 gebildet. In der Ausnehmung 52 ist ein Wellendichtring 54 aus gummielastischem Material angeordnet, der mit einer spitzen Dichtkante 54a am Außenumfang einer auf der Welle 32 aufgeschrumpften Hülse 56 dichtend in Anlage ist. Die Hülse 56 ist mit einem Dichtring 58 gegen die Welle 32 abgedichtet. Die Hülse 56 hat eine radial überhöhte Schulter 56a, in der zwei Dichtringe 60 axial nebeneinander aufgenommen sind. Die Dichtringe 60 dichten die Hülse 56 gegen den Innenumfang der Ausnehmung in der Lagerdeckelplatte 42 ab. Zwischen dem Dichtring 54 und der Aussparung in der Lagerdeckelplatte 42 verbleibt ein Zwischenraum 62, der mit einer Bohrung 64 in Verbindung steht. Die Bohrung 64 führt durch die Lagerdeckelplatte 42 nach außen. Die Besonderheit der in Figur 5 dargestellten Wellendichtung besteht darin, daß sie an der Lagerdeckelplatte 42 angeordnet ist und so einen problemlosen Einbau von der offenen Stirnseite des Gehäusegrundkörpers her ermöglicht.FIG. 5 shows an enlarged representation of the shaft bearing on the intermediate wall 18 and the shaft seal arranged on the bearing cover plate 42. The shaft bearing consists of a double ball bearing, generally designated 50. A recess 52 is formed in the bearing cover plate 42 to accommodate the shaft seal. A shaft sealing ring 54 made of rubber-elastic material is arranged in the recess 52 and is in sealing contact with a pointed sealing edge 54a on the outer circumference of a sleeve 56 shrunk on the shaft 32. The sleeve 56 is sealed with a sealing ring 58 against the shaft 32. The sleeve 56 has a radially raised shoulder 56a, in which two sealing rings 60 are accommodated axially next to one another. The sealing rings 60 seal the sleeve 56 against the inner circumference of the recess in the bearing cover plate 42. Between the sealing ring 54 and the recess in the bearing cover plate 42, an intermediate space 62 remains which is connected to a bore 64. The bore 64 leads through the bearing cover plate 42 to the outside. The special feature of the shaft seal shown in FIG. 5 is that it is arranged on the bearing cover plate 42 and thus enables problem-free installation from the open end face of the basic housing body.
Bei der in Figur 6 gezeigten Ausführungsform der Verdichtermaschine ist der Grundkörper des Gehäuses von einer Haube 70 umgeben, die mit dem Außenumfang des Gehäuses axiale Kühlluftkanäle 72 abgrenzt. Die Kühlluftkanäle 72 führen von einem Schutzgitter 74 neben dem Gehäusedeckel 44 axial entlang dem Außenumfang des Gehäuses bis hinter die Getriebekammer, wo sie radial einwärts in eine Lüfterkammer 76 münden, in der ein Lüfter angeordnet ist, dessen Läufer auf einer Antriebswelle befestigt ist, die mit der unteren Welle 30 gekoppelt ist. Die Kühlluft tritt radial nach unten aus. In the embodiment of the compressor machine shown in FIG. 6, the base body of the housing is surrounded by a hood 70 which delimits axial cooling air ducts 72 with the outer circumference of the housing. The cooling air ducts 72 lead from a protective grille 74 next to the housing cover 44 axially along the outer circumference of the housing to behind the transmission chamber, where they open radially inward into a fan chamber 76 in which a fan is arranged, the rotor of which is fastened to a drive shaft which is connected to the lower shaft 30 is coupled. The cooling air exits radially downwards.

Claims

Patentansprüche claims
1. Verdichtermaschine mit zwei gegensinnig laufenden Rotoren, die auf zwei parallelen, voneinander beabstandeten und in einem Gehäuse gelagerten Wellen montiert sind, von denen eine direkt und die andere durch miteinander kämmende, auf den Wellen angebrachte Zahnräder angetrieben ist, dadurch gekennzeichnet, dass das Gehäuse zwei einteilig miteinander und mit einer Umfangswand ausgebildete radiale Wände, in denen die Wellen gelagert und zwischen denen die Zahnräder angeordnet sind, und eine Seitenwand mit einer durch einen abnehmbaren Seitendeckel verschlossenen Öffnung aufweist.1. Compression machine with two counter-rotating rotors, which are mounted on two parallel, spaced apart and mounted in a housing shafts, one of which is driven directly and the other by meshing gears mounted on the shafts, characterized in that the housing two radial walls formed in one piece with one another and with a peripheral wall, in which the shafts are mounted and between which the gears are arranged, and a side wall with an opening closed by a removable side cover.
2. Verdichtermaschine nach Anspruch 1, dadurch gekennzeichnet, dass eine der radialen Wände eine radiale Außenwand und die andere eine Zwischenwand ist, die auf ihrer einen Seite mit der radialen Außenwand eine die Zahnräder aufnehmende Getriebekammer und auf ihrer anderen Seite eine die Rotoren aufnehmende Arbeitskammer abgrenzt.2. Compression machine according to claim 1, characterized in that one of the radial walls is a radial outer wall and the other is an intermediate wall which delimits on one side with the radial outer wall a gear chamber receiving the gears and on its other side a working chamber receiving the rotors ,
3. Verdichtermaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Rotoren fliegend an den Wellen gelagert sind.3. Compression machine according to claim 2, characterized in that the rotors are overhung on the shafts.
4. Verdichtermaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Arbeitskammer auf der von der Zwischenwand abgewandten Stirnseite durch einen radialen Gehäusedeckel verschlossen ist.4. Compression machine according to claim 2 or 3, characterized in that the working chamber is closed on the end face facing away from the intermediate wall by a radial housing cover.
5. Verdichtermaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Arbeitskammer auf der von der Zwischenwand abgewandten Stirnseite durch einen Gehäusedeckel verschlossen ist, in dem eine Auslassöffhung gebildet ist, die bei der Drehung der Rotoren anschließend an eine Phase innerer Verdichtung freigelegt und während einer Einlassphase durch die Stirnfläche eines der Rotoren verschlossen wird. 5. Compression machine according to claim 2 or 3, characterized in that the working chamber is closed on the end facing away from the intermediate wall by a housing cover, in which an outlet opening is formed, which is then exposed to a phase of internal compression during the rotation of the rotors and during an inlet phase is closed by the end face of one of the rotors.
6. Verdichtermaschine nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass das Gehäuse einen Monoblock-Grundkörper bildet, der an seinem dem Deckel zugewandten Stirnende eine Öffnung aufweist, deren Weite die größte von allen im Inneren des Gehäuses gelegenen axialen Durchgängen und Bohrungen ist, so dass diese zur Bearbeitung durch diese Öffnung in einer Aufspannung des Grundkörpers zugänglich sind.6. Compression machine according to one of claims 2 to 5, characterized in that the housing forms a monoblock base body which has an opening at its end facing the cover, the width of which is the largest of all the axial passages and bores located in the interior of the housing , so that they are accessible for machining through this opening in a clamping of the base body.
7. Verdichtermaschine nach Anspruch 6, dadurch gekennzeichnet, dass die Zwischenwand ihrerseits axial durchgehende Öffnungen zur Aufiiahme von Wellenlagern aufweist, deren Weite größer ist als die der axialen Lagerbohrungen in der radialen Außenwand.7. Compression machine according to claim 6, characterized in that the intermediate wall in turn has axially through openings for receiving shaft bearings, the width of which is greater than that of the axial bearing bores in the radial outer wall.
8. Verdichtermaschine nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass an die Zwischenwand auf der Seite der Rotoren eine Lagerdeckelplatte angesetzt ist.8. Compression machine according to one of claims 2 to 7, characterized in that a bearing cover plate is attached to the intermediate wall on the side of the rotors.
9. Verdichtermaschine nach Anspruch 8, dadurch gekennzeichnet, dass die Lagerdeckelplatte Ausnehmungen zur Aufnahme von Wellendichtungen aufweist.9. Compression machine according to claim 8, characterized in that the bearing cover plate has recesses for receiving shaft seals.
10. Verdichtermaschine nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, dass an den radialen Gehäusedeckel eine Haube angeschlossen ist, die einen Lüfter umschließt.10. Compression machine according to one of claims 4 to 9, characterized in that a hood is connected to the radial housing cover, which encloses a fan.
11. Verdichtermaschine nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, dass die Umfangswand des Gehäuses von einer Haube umgeben ist, die mit der Umfangswand axiale Kühlluftkanäle bildet, die von der dem Gehäusedeckel benachbarten Stirnfläche bis zu einem Lüfter geführt sind, der auf der von der Arbeitskammer abgewandten Seite der Getriebekammer auf einer Antriebswelle angeordnet ist. 11. Compressor machine according to one of claims 4 to 9, characterized in that the peripheral wall of the housing is surrounded by a hood which forms with the peripheral wall axial cooling air channels which are guided from the end face adjacent to the housing cover to a fan which on the side of the gear chamber facing away from the working chamber is arranged on a drive shaft.
EP03809330A 2002-10-25 2003-10-24 Compressor machine with two counter-rotating rotors Expired - Lifetime EP1554496B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20216504U DE20216504U1 (en) 2002-10-25 2002-10-25 Displacement machine with rotors running in opposite directions
DE20216504U 2002-10-25
PCT/EP2003/011853 WO2004038227A1 (en) 2002-10-25 2003-10-24 Compressor machine with two counter-rotating rotors

Publications (2)

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EP1554496A1 true EP1554496A1 (en) 2005-07-20
EP1554496B1 EP1554496B1 (en) 2006-06-07

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EP03809330A Expired - Lifetime EP1554496B1 (en) 2002-10-25 2003-10-24 Compressor machine with two counter-rotating rotors

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US (1) US7128543B2 (en)
EP (1) EP1554496B1 (en)
JP (1) JP4148948B2 (en)
KR (1) KR100604734B1 (en)
CN (1) CN100489311C (en)
AU (1) AU2003276182A1 (en)
DE (2) DE20216504U1 (en)
HK (1) HK1086872A1 (en)
WO (1) WO2004038227A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4353837B2 (en) * 2004-03-22 2009-10-28 住友重機械工業株式会社 Reducer and friction load applying member for reducer
DE102006035783A1 (en) * 2006-08-01 2008-02-07 Grasso Gmbh Refrigeration Technology screw compressors
TW200848617A (en) * 2007-06-08 2008-12-16 Jaguar Prec Industry Co Ltd Motor direct drive air pump, related applications and manufacturing methods thereof
JP2010144576A (en) * 2008-12-17 2010-07-01 Toyota Industries Corp Electric roots compressor
DE102008063983A1 (en) * 2008-12-19 2010-07-01 Dürr Systems GmbH Pump for conveying a fluid, in particular metering pump
JP5504530B2 (en) * 2009-09-15 2014-05-28 オリオン機械株式会社 Manufacturing method of rotary pump device
CN103047049B (en) * 2012-12-31 2015-04-29 王来瑞 Turbojet engine
KR101586330B1 (en) * 2015-10-06 2016-01-19 (주)한국브로워 Helical port roots type rotary blower
CN109915365B (en) * 2019-04-04 2023-11-17 烟台东德氢能技术有限公司 Roots type air compressor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1386792A (en) * 1919-08-14 1921-08-09 John T Needham Rotary blower
US2188752A (en) * 1938-01-12 1940-01-30 Roots Connersville Blower Corp Fluid handling apparatus
US2642808A (en) * 1948-05-17 1953-06-23 Waterous Co Sanitary pump
US2635552A (en) * 1949-01-31 1953-04-21 Bump Pump Co Sanitary pump assemblage
FR1480749A (en) * 1966-05-23 1967-05-12 Midland Ross Corp Roots type compressor
US4057375A (en) * 1976-10-22 1977-11-08 Nachtrieb Paul W Pump structure
EP0048095B1 (en) * 1980-09-05 1983-12-14 British Nuclear Fuels PLC Pump for heavy gases
US4457680A (en) * 1983-04-27 1984-07-03 Paget Win W Rotary compressor
US4772187A (en) * 1986-09-08 1988-09-20 Thompson George A Rotary pump
GB9004594D0 (en) * 1990-02-28 1990-04-25 Apv Crepaco Pumps Ltd Improvements in or relating to rotary pumps
CN2299170Y (en) * 1996-11-08 1998-12-02 徐曦 Single-stage claw rotor vacuum pump
DE19819538C2 (en) * 1998-04-30 2000-02-17 Rietschle Werner Gmbh & Co Kg Pressure suction pump
DE29905249U1 (en) * 1999-03-22 1999-12-30 Rietschle Werner Gmbh & Co Kg Pump for generating pressure and negative pressure
US6729863B2 (en) * 1999-03-22 2004-05-04 Werner Rietschle Gmbh & Co. Kg Rotary pump having high and low pressure ports in the housing cover

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004038227A1 *

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KR20050071619A (en) 2005-07-07
AU2003276182A1 (en) 2004-05-13
KR100604734B1 (en) 2006-07-28
WO2004038227A1 (en) 2004-05-06
DE20216504U1 (en) 2003-03-06
US20060051231A1 (en) 2006-03-09
JP4148948B2 (en) 2008-09-10
HK1086872A1 (en) 2006-09-29
DE50303735D1 (en) 2006-07-20
JP2006504030A (en) 2006-02-02
CN100489311C (en) 2009-05-20
CN1708648A (en) 2005-12-14
US7128543B2 (en) 2006-10-31
EP1554496B1 (en) 2006-06-07

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