EP0736692B1 - Sealing, bearing support and driving of the rotors of a dry running screw compressor - Google Patents
Sealing, bearing support and driving of the rotors of a dry running screw compressor Download PDFInfo
- Publication number
- EP0736692B1 EP0736692B1 EP96101860A EP96101860A EP0736692B1 EP 0736692 B1 EP0736692 B1 EP 0736692B1 EP 96101860 A EP96101860 A EP 96101860A EP 96101860 A EP96101860 A EP 96101860A EP 0736692 B1 EP0736692 B1 EP 0736692B1
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- EP
- European Patent Office
- Prior art keywords
- rotors
- rotor
- pressure side
- bearing housing
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- 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
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2220/00—Application
- F04C2220/10—Vacuum
- F04C2220/12—Dry running
Definitions
- the invention relates to a dry-running rotor compressor with meshing between a screw-toothed rib rotor and a screw-toothed slot rotor with the features of The preamble of claim 1.
- a screw rotor compressor transports as inevitable conveying displacement machine accordingly the medium not only from the suction to the pressure side, but also compresses it this way too, by reducing the size of the tooth spaces. If the rotors or rotors rotate in the housing, they arrive the suction-side control edge out of engagement, so that a Cross section and a volume for suction opens. With another The rotors at their control edges turn again Intervention. The cross section of the axial direction itself moving workspace is reduced to the control edge on the pressure side of the housing on which the compressed medium is pushed out.
- Screw rotor compressors can be used directly with the Engine speed via a built-in or external gear drive.
- Screw rotor compressors with small compression ratios (Final pressure / suction pressure) at which the pumped medium is not included a coolant may be contaminated as dry-running screw rotor compressors or as dry rotors designated and need to maintain the distance of A differential gear, which the rotors in front Touch protects.
- the rotors of these screw rotor compressors have both sides arranged pegs in axial and radial bearings in the housing are stored.
- a screw compressor is known from EP-A-0 101 345, at which the pressure-side ends of the rotors with an inner bearing are provided, while the suction-side rotor ends outside are stored, and the drive point outside the compressor lies.
- the well-known screw compressor shows only in Area of the bearing of the rotors individual sealing sections Atmosphere side. These seals are located radially on the rotors on, which increases the bearing distances.
- the known Screw compressor has a relatively large length on and its sealing is unsatisfactory.
- the drive of the screw rotor compressor can be done on one the rotor ends on the suction or pressure side.
- a torsion shaft is also possible, which is through a hole in the suction or pressure side bearing housing and in one of the four Cone is guided. Via a coupling at the outer end of the Torsion shaft drives the compressor.
- the sealing washers consist of a sintered PTFE-mica mixture or of a material with similar properties.
- the invention has for its object a dry-running screw rotor compressor with extremely short To create design and the shortest possible design to achieve the greatest possible tightness.
- the screw rotor compressor internal rotor bearings are part of the suction side and of the pressure side bearing housing and consist of the same Material, e.g. B. Cast steel.
- the pins protrude into the holes Rotors into it, which are used to support the rotors with sliding or Rolling bearings are equipped.
- the drive of the screw rotor compressor can be on one of the rotor ends on the suction or pressure side. Between the pressure side ends of the rotors and the pressure side Bearing housings are each gear wheels Differential gear and a seal housing with Sealing washers and seals arranged. Between suction-side ends of the rotors and the suction-side Bearing housings are only seal housings, sealing washers and seals provided.
- Sealing the compression space from the environment is achieved with seals that are on the pressure side in one Seal housing and suction side also in one Seal housing that in the suction side bearing housing is attached, attached and against the rotor end faces are directed.
- Gas-sealed seals for example, can be used as seals are used, the particularly high sealing requirements fulfill.
- sealing washers which are also on the seal housing are attached, the tooth gap spaces sealed against each other.
- the gap between the Rotors and the sealing washers will be on during assembly 0 mm set.
- the Sealing discs removed from the rotors as far as for the non-contact run between the sealing washer and rotor is required.
- Dry-running screw rotor compressors resulting from the given pressure level and the specified speed, according to the calculated Bearing force and the required service life, with sliding or roller bearings.
- gear wheels arranged on the pressure side, Seals and the bearing housing are the pressure conditions customized.
- 1 is the suction-side bearing housing (3) on its inside with a pin (25) for Intervention in the bore in the fin rotor (1) and with a further pin (25) for engagement in the Grooved rotor (2).
- the pressure-side bearing housing (5) has on it Also inside the pin (25). One of those cones engages in the hole in the rib rotor (1) and the other into the hole in the slot rotor (2). Both bearing housings (3, 5) are detachable on the compressor housing (4) attached.
- the rotors (1, 2) exist within the Compressor housing (4) only from the screw-toothed Part of the rib rotor (1) and the screw-toothed Part of the slot rotor (2), in the end centric holes for receiving the pin (25) introduced are.
- Fig. 1 is the Drive of the compressor on the pressure side on the rib rotor (1).
- the bearings of the rotors (1, 2) on the pressure side Pin (25) is carried out by radial bearings and axial bearings (20, 22) held by spacer rings (21) and are secured by shaft nuts (23). Suction side are the rotors (1, 2) in radial bearings (12) on the Pin (25) stored.
- the rib rotor (1) is driven on the pressure side with the help of a torsion shaft (9) with coupling flange.
- This torsion shaft is through a hole in the pressure-side bearing housing (5) and the pin (25) led and has a thickening at the inside end (26), which is in a recess of the bore of the Rib rotor (1) is located. Between the torsion shaft (9) and the rib rotor (1) is thereby a positive Connected.
- the seal between the spaces between the teeth Rotors (1, 2) are made using sealing disks (15, 16), the in the suction side seal housing (14) or in the pressure side seal housing (8) inserted and be attached.
- This differential consists of a gear wheel (6) for the rib rotor (1) and a gear wheel (7) for the slot rotor (2) with the required pressure side bearing locks (19).
- Fig. 2 shows the design of a screw rotor compressor with radial bearings (12) and (20) for one high bearing load is laid out.
- this is pressure-side bearing housing (5) designed so that wider gear wheels (6 ') on the rib rotor (1) and also wider gear wheels (7 ') on the slot rotor (23) and larger radial and axial bearings (20, 22) be used.
- the gear wheels (6 ', 7') are with spur tooth clutches (24, 27) via central screws (18) with the Rotors (1, 2) connected.
Description
Die Erfindung betrifft einen trockenlaufenden Rotorverdichter mit Kämmeingriff zwischen einem schraubenverzahnten Rippenrotor und einem schraubenverzahnten Nutenrotor mit den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a dry-running rotor compressor with meshing between a screw-toothed rib rotor and a screw-toothed slot rotor with the features of The preamble of claim 1.
Ein Schraubenrotorverdichter transportiert als zwangsläufig fördernde Verdrängermaschine dementsprechend das Fördermedium nicht nur von der Saug- zur Druckseite, sondern verdichtet es auch auf diesem Wege durch Verkleinerung der Zahnlückenräume. Drehen sich die Läufer bzw. Rotoren im Gehäuse, kommen sie an der saugseitigen Steuerkante außer Eingriff, so daß sich ein Querschnitt und ein Volumen zum Ansaugen öffnet. Bei weiterer Drehung kommen die Rotoren an ihren Steuerkanten wieder zum Eingriff. Der Querschnitt des in axialer Richtung sich bewegenden Arbeitsraumes verkleinert sich bis zur Steuerkante auf der Druckseite des Gehäuses, an der das komprimierte Medium ausgeschoben wird.A screw rotor compressor transports as inevitable conveying displacement machine accordingly the medium not only from the suction to the pressure side, but also compresses it this way too, by reducing the size of the tooth spaces. If the rotors or rotors rotate in the housing, they arrive the suction-side control edge out of engagement, so that a Cross section and a volume for suction opens. With another The rotors at their control edges turn again Intervention. The cross section of the axial direction itself moving workspace is reduced to the control edge on the pressure side of the housing on which the compressed medium is pushed out.
Schraubenrotorverdichter lassen sich direkt mit der Motordrehzahl über ein eingebautes oder externes Getriebe antreiben.Screw rotor compressors can be used directly with the Engine speed via a built-in or external gear drive.
Schraubenrotorverdichter mit kleinen Kompressionsverhältnissen (Enddruck/Saugdruck), bei denen das geförderte Medium nicht mit einer Kühlflüssigkeit verunreinigt werden darf, werden als trockenlaufende Schraubenrotorverdichter bzw. als Trockenläufer bezeichnet und benötigen zur Wahrung des Abstandes der Rotorflächen ein Ausgleichsgetriebe, welches die Rotoren vor Berührung schützt.Screw rotor compressors with small compression ratios (Final pressure / suction pressure) at which the pumped medium is not included a coolant may be contaminated as dry-running screw rotor compressors or as dry rotors designated and need to maintain the distance of A differential gear, which the rotors in front Touch protects.
Die Rotoren dieser Schraubenrotorverdichter besitzen beidseitig angeordnete Zapfen, die in Axial- und Radiallagern im Gehäuse gelagert sind. The rotors of these screw rotor compressors have both sides arranged pegs in axial and radial bearings in the housing are stored.
Nachteilig ist bei dieser Ausführung die hohe Durchbiegung der Rotoren und das gleichzeitige Auftreten von hohen Torsions- und Biegespannungen an dem angetriebenen Rotorzapfen. Um den Rotoren eine möglichst hohe Steifigkeit zu verleihen bzw. um die erforderlichen Drehmomente übertragen zu können, führt man die Lagerzapfen möglichst groß aus. Dies hat zur Folge, daß der Lagerdurchmesser und der Lagerabstand auch entsprechend groß gewählt werden muß.The disadvantage of this design is the high deflection of the Rotors and the simultaneous appearance of high torsional and Bending stresses on the driven rotor journal. To the To give rotors the highest possible rigidity or to to be able to transmit the required torques the trunnions as large as possible. As a result, the Bearing diameter and the distance between the bearings are also large must be chosen.
Aus der EP-A-0 101 345 ist ein Schraubenkompressor bekannt, bei dem die druckseitigen Enden der Rotoren mit einer Innenlagerung versehen sind, während die saugseitigen Rotorenden außen gelagert sind, und der Antriebspunkt außerhalb des Kompressors liegt. Der bekannte Schraubenkompressor zeigt lediglich im Bereich der Lagerung der Rotoren einzelne Dichtungspartien zur Atmosphärenseite. Diese Dichtungen liegen radial an den Rotoren an, wodurch sich die Lagerabstände vergrößern. Der bekannte Schraubenkompressor weist eine verhältnismäßig große Baulänge auf und seine Abdichtung ist unbefriedigend.A screw compressor is known from EP-A-0 101 345, at which the pressure-side ends of the rotors with an inner bearing are provided, while the suction-side rotor ends outside are stored, and the drive point outside the compressor lies. The well-known screw compressor shows only in Area of the bearing of the rotors individual sealing sections Atmosphere side. These seals are located radially on the rotors on, which increases the bearing distances. The known Screw compressor has a relatively large length on and its sealing is unsatisfactory.
Aus der bisher nichtveröffentlichten DE-A-4 4 03 649.3 ist ein Schraubenrotorverdichter mit einer Öleinspritzung bekannt, der innenliegende Rotorenlagerungen aufweist. Die Lagerzapfen für den Haupt- und Nebenrotor sind jeweils Teile des saugseitigen bzw. des druckseitigen Lagergehäuses und bestehen daher aus dem gleichen Material, z. B. Stahlguß. Die Zapfen ragen in Bohrungen der Rotoren hinein, die zur Lagerung der Zapfen mit Gleit- oder Wälzlagern ausgerüstet sind.From the previously unpublished DE-A-4 4 03 649.3 is a Screw rotor compressor with an oil injection known, the has internal rotor bearings. The bearing pins for the main and secondary rotors are parts of the suction side or the pressure-side bearing housing and therefore consist of the same material, e.g. B. Cast steel. The cones protrude Bores of the rotors into it, which are used to support the journal Plain or roller bearings are equipped.
Ein besonderer wirtschaftlicher Vorteil dieser Lagerkonstruktion ist darin zu sehen, daß der so konstruierte Schraubenrotorverdichter gegenüber Verdichtern, bei denen die Rotoren beidseitig angeordnete Zapfen aufweisen, eine extrem kurze Bauform aufweist. A particular economic advantage of this Bearing construction can be seen in the fact that the so constructed Screw rotor compressors compared to compressors where the Rotors have pins arranged on both sides, an extreme has a short design.
Es können für die Lagerung wahlweise saugseitig Axial- und Radiallager und druckseitig Radiallager oder aber saugseitig Radiallager und druckseitig Axial- und Radiallager verwendet werden.Axial and Radial bearings and radial bearings on the pressure side or on the suction side Radial bearings and thrust and radial bearings used on the pressure side become.
Der Antrieb des Schraubenrotorverdichters läßt sich an einem der saug- oder druckseitigen Rotorenden anordnen.The drive of the screw rotor compressor can be done on one the rotor ends on the suction or pressure side.
Für den Antrieb ist neben Kupplungen beliebiger Bauart u. a. auch eine Torsionswelle möglich, die durch eine Bohrung im saug- oder druckseitigen Lagergehäuse und in einen der vier Zapfen geführt ist. Über eine Kupplung am äußeren Ende der Torsionswelle erfolgt der Antrieb des Verdichters.For the drive, in addition to couplings of any type u. a. a torsion shaft is also possible, which is through a hole in the suction or pressure side bearing housing and in one of the four Cone is guided. Via a coupling at the outer end of the Torsion shaft drives the compressor.
Aus der bisher nichtveröffentlichten DE-A-4 4 03 648.5 sowie aus der DE-A-3 609 996 ist darüber hinaus die Abdichtung der Stirnflächen der Rotoren eines Schraubenrotorverdichtes mit einer Öleinspritzung gegenüber dem Gehäuse mittels Dichtscheiben bekannt, um die Abdichtung des Wirkraumes zwischen einem schraubenverzahnten Rippenrotor und einem schraubenverzahnten Nutenrotor zu erreichen.From the previously unpublished DE-A-4 4 03 648.5 and from DE-A-3 609 996 is also the sealing of the End faces of the rotors of a screw rotor compression an oil injection against the housing by means of Sealing washers known to seal the effective space between a screw-toothed rib rotor and a to reach screw-toothed slot rotor.
Zwischen den Stirnflächen der Rotoren und dem Gehäuse befinden sich auf den saug- und druckseitigen Gehäuseteilen Dichtscheiben, die an diese Gehäuseteile angeschraubt, angeklebt oder formschlüssig eingelegt sind. Die Dichtscheiben bestehen aus einem gesinterten PTFE-Glimmer-Gemisch oder aus einem Werkstoff mit ähnlichen Eigenschaften.Located between the end faces of the rotors and the housing on the suction and pressure side housing parts Sealing washers screwed to these housing parts, are glued or inserted positively. The sealing washers consist of a sintered PTFE-mica mixture or of a material with similar properties.
Der Erfindung liegt die Aufgabe zugrunde, einen trockenlaufenden Schraubenrotorverdichter mit extrem kurzer Bauform zu schaffen und bei kürzest möglicher Bauform die größtmögliche Dichtigkeit zu erreichen.The invention has for its object a dry-running screw rotor compressor with extremely short To create design and the shortest possible design to achieve the greatest possible tightness.
Diese Aufgabe wird bei einem gattungsgemäßen Schraubenverdichter erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche.This task is done with a generic Screw compressor according to the invention by the characteristic Features of claim 1 solved. Beneficial Embodiments of the invention are the subject of the others Expectations.
Nach der Erfindung weist der Schraubenrotorverdichter innenliegende Rotorenlagerungen auf. Die Lagerzapfen für den Haupt- und Nebenrotor sind jeweils Teil des saugseitigen bzw. des druckseitigen Lagergehäuses und bestehen aus dem gleichen Material, z. B. Stahlguß. Die Zapfen ragen in Bohrungen der Rotoren hinein, die zur Lagerung der Rotoren mit Gleit- oder Wälzlagern ausgerüstet sind.According to the invention, the screw rotor compressor internal rotor bearings. The bearing journal for the The main and secondary rotors are part of the suction side and of the pressure side bearing housing and consist of the same Material, e.g. B. Cast steel. The pins protrude into the holes Rotors into it, which are used to support the rotors with sliding or Rolling bearings are equipped.
Auch hier werden für die Lagerung wahlweise saugseitig Axial- und Radiallager und druckseitig Radiallager oder aber saugseitig Radiallager und druckseitig Axial- und Radiallager verwendet.Here, too, axial and radial bearings and radial bearings on the pressure side or radial bearings on the suction side and axial and radial bearings on the pressure side used.
Der Antrieb des Schraubenrotorverdichters kann an einem der saug- oder druckseitigen Rotorenden angeordnet werden. Zwischen den druckseitigen Enden der Rotoren und dem druckseitigen Lagergehäuse werden jeweils Getrieberäder eines Ausgleichsgetriebes sowie ein Dichtungsgehäuse mit Dichtscheiben und Dichtungen angeordnet. Zwischen den saugseitigen Enden der Rotoren und dem saugseitigen Lagergehäuse werden lediglich Dichtungsgehäuse, Dichtscheiben und Dichtungen vorgesehen.The drive of the screw rotor compressor can be on one of the rotor ends on the suction or pressure side. Between the pressure side ends of the rotors and the pressure side Bearing housings are each gear wheels Differential gear and a seal housing with Sealing washers and seals arranged. Between suction-side ends of the rotors and the suction-side Bearing housings are only seal housings, sealing washers and seals provided.
Die Abdichtung des Kompressionsraumes gegenüber der Umgebung wird mit Dichtungen erreicht, die druckseitig in einem Dichtungsgehäuse und saugseitig ebenfalls in einem Dichtungsgehäuse, das in dem saugseitigen Lagergehäuse befestigt ist, angebracht und gegen die Rotorstirnflächen gerichtet sind. Sealing the compression space from the environment is achieved with seals that are on the pressure side in one Seal housing and suction side also in one Seal housing that in the suction side bearing housing is attached, attached and against the rotor end faces are directed.
Entsprechend dem Druckniveau und der Art des zu fördernden Mediums können an den vier Rotorenden gleiche oder unterschiedliche Dichtungen eingesetzt werden.According to the pressure level and the type of to conveying medium can at the four rotor ends same or different seals used become.
Als Dichtungen können zum Beispiel gasgesperrte Dichtungen eingesetzt werden, die besonders hohe Dichtansprüche erfüllen.Gas-sealed seals, for example, can be used as seals are used, the particularly high sealing requirements fulfill.
Mittels Dichtscheiben, die ebenfalls am Dichtungsgehäuse angebracht sind, werden die Zahnlückenräume gegeneinander abgedichtet. Der Spalt zwischen den Rotoren und den Dichtscheiben wird bei der Montage auf 0 mm eingestellt. Während des Betriebes werden die Dichtscheiben von den Rotoren so weit abgetragen wie das für den berührungslosen Lauf zwischen Dichtscheibe und Rotor erforderlich ist.By means of sealing washers, which are also on the seal housing are attached, the tooth gap spaces sealed against each other. The gap between the Rotors and the sealing washers will be on during assembly 0 mm set. During operation, the Sealing discs removed from the rotors as far as for the non-contact run between the sealing washer and rotor is required.
Trockenlaufende Schraubenrotorverdichter werden, resultierend aus dem gegebenen Druckniveau und der vorgegebenen Drehzahl, entsprechend der errechneten Lagerkraft und der verlangten Lebensdauer, mit Gleit- oder Wälzlagern versehen.Dry-running screw rotor compressors, resulting from the given pressure level and the specified speed, according to the calculated Bearing force and the required service life, with sliding or roller bearings.
Auch die auf der Druckseite angeordneten Getrieberäder, Dichtungen sowie das Lagergehäuse werden den Druckverhältnissen angepaßt.Also the gear wheels arranged on the pressure side, Seals and the bearing housing are the pressure conditions customized.
Ausführungsbeispiele der Erfindung werden nachstehend anhand von schematischen Zeichnungen näher erläutert.Embodiments of the invention are as follows explained in more detail using schematic drawings.
Es zeigen:
- Fig. 1
- einen Längsschnitt durch einen Schraubenrotorverdichter mit Torsionswelle und Wälzlagern bzw. Gleitlagern für geringe Lagerbelastung,
- Fig. 2
- einen Längsschnitt durch einen Schraubenrotorverdichter mit Torsionswelle und Gleitlagern für hohe Lagerbelastungen.
- Fig. 1
- a longitudinal section through a screw rotor compressor with a torsion shaft and roller bearings or plain bearings for low bearing loads,
- Fig. 2
- a longitudinal section through a screw rotor compressor with a torsion shaft and plain bearings for high bearing loads.
Entsprechend Fig. 1 ist das saugseitige Lagergehäuse (3) an seiner Innenseite mit einem Zapfen (25) zum Eingriff in die Bohrung im Rippenrotor (1) und mit einem weiteren Zapfen (25) zum Eingriff in den Nutenrotor (2) ausgestattet.1 is the suction-side bearing housing (3) on its inside with a pin (25) for Intervention in the bore in the fin rotor (1) and with a further pin (25) for engagement in the Grooved rotor (2).
Das druckseitige Lagergehäuse (5) besitzt an seiner Innenseite ebenfalls Zapfen (25). Einer dieser Zapfen greift in die Bohrung im Rippenrotor (1) und der andere in die Bohrung im Nutenrotor (2) ein. Beide Lagergehäuse (3, 5) sind an dem Kompressorgehäuse (4) lösbar befestigt.The pressure-side bearing housing (5) has on it Also inside the pin (25). One of those cones engages in the hole in the rib rotor (1) and the other into the hole in the slot rotor (2). Both bearing housings (3, 5) are detachable on the compressor housing (4) attached.
Demnach bestehen die Rotoren (1, 2) innerhalb des Kompressorgehäuses (4) nur noch aus dem schraubenverzahnten Teil des Rippenrotors (1) und dem schraubenverzahnten Teil des Nutenrotors (2), in deren Ende zentrische Bohrungen zur Aufnahme der Zapfen (25) eingebracht sind.Accordingly, the rotors (1, 2) exist within the Compressor housing (4) only from the screw-toothed Part of the rib rotor (1) and the screw-toothed Part of the slot rotor (2), in the end centric holes for receiving the pin (25) introduced are.
Im Ausführungsbeispiel gem. Fig. 1 befindet sich der Antrieb des Verdichters druckseitig am Rippenrotor (1).In the embodiment according to Fig. 1 is the Drive of the compressor on the pressure side on the rib rotor (1).
Die Lagerung der Rotoren (1, 2) auf den druckseitigen Zapfen (25) erfolgt durch Radiallager und Axiallager (20, 22), die durch Distanzringe (21) gehalten und durch Wellenmuttern (23) gesichert sind. Saugseitig sind die Rotoren (1, 2) in Radiallagern (12) auf den Zapfen (25) gelagert. The bearings of the rotors (1, 2) on the pressure side Pin (25) is carried out by radial bearings and axial bearings (20, 22) held by spacer rings (21) and are secured by shaft nuts (23). Suction side are the rotors (1, 2) in radial bearings (12) on the Pin (25) stored.
Auf der Saugseite sind innerhalb der Bohrungen der Rotoren (1, 2) und zwischen den Enden der Zapfen (25) Ölabstreifer (13) mit einem Abführkanal durch das Lagergehäuse (3) angeordnet.On the suction side are inside the holes Rotors (1, 2) and between the ends of the pins (25) Oil scraper (13) with a discharge channel through the Bearing housing (3) arranged.
Der Antrieb des Rippenrotors (1) erfolgt auf der Druckseite mit Hilfe einer Torsionswelle (9) mit Kupplungsflansch. Diese Torsionswelle ist durch eine Bohrung im druckseitigen Lagergehäuse (5) und den Zapfen (25) geführt und weist am innenseitigen Ende eine Verdickung (26) auf, die sich in einer Ausnehmung der Bohrung des Rippenrotors (1) befindet. Zwischen der Torsionswelle (9) und dem Rippenrotor (1) wird dadurch eine formschlüssige Verbindung hergestellt.The rib rotor (1) is driven on the pressure side with the help of a torsion shaft (9) with coupling flange. This torsion shaft is through a hole in the pressure-side bearing housing (5) and the pin (25) led and has a thickening at the inside end (26), which is in a recess of the bore of the Rib rotor (1) is located. Between the torsion shaft (9) and the rib rotor (1) is thereby a positive Connected.
Als Abdichtung des Kompressionsraumes gegenüber der Atmosphärenseite befinden sich auf der Druckseite und der Saugseite der Stirnflächen der Rotoren Gasdichtungen (10, 17).As a seal of the compression space against the Atmospheric side are on the pressure side and the suction side of the end faces of the rotors gas seals (10, 17).
Die Abdichtung zwischen den Zahnlückenräumen der Rotoren (1, 2) erfolgt mittels Dichtscheiben (15, 16), die in das saugseitige Dichtungsgehäuse (14) bzw. in das druckseitige Dichtungsgehäuse (8) eingelegt und befestigt werden.The seal between the spaces between the teeth Rotors (1, 2) are made using sealing disks (15, 16), the in the suction side seal housing (14) or in the pressure side seal housing (8) inserted and be attached.
Zur Einhaltung des Abstandes der Rotorflächen des Rippenrotors (1) und des Nutenrotors (2) wird ein Ausgleichsgetriebe zwischen druckseitigem Dichtungsgehäuse (8) und Lagergehäuse (5) eingesetzt.To maintain the distance between the rotor surfaces of the Rib rotor (1) and the slot rotor (2) is a Differential gear between the pressure side seal housing (8) and bearing housing (5) used.
Dieses Ausgleichsgetriebe besteht aus einem Getrieberad (6) für den Rippenrotor (1) und einem Getrieberad (7) für den Nutenrotor (2) mit den erforderlichen druckseitigen Lagersicherungen (19). This differential consists of a gear wheel (6) for the rib rotor (1) and a gear wheel (7) for the slot rotor (2) with the required pressure side bearing locks (19).
Fig. 2 zeigt die Ausführung eines Schraubenrotorverdichters mit Radiallagern (12) und (20), der für eine hohe Lagerbelastung augelegt ist.Fig. 2 shows the design of a screw rotor compressor with radial bearings (12) and (20) for one high bearing load is laid out.
Gegenüber dem Ausführungsbeispiel nach Fig. 1 ist das druckseitige Lagergehäuse (5) so gestaltet, daß breitere Getrieberäder (6') am Rippenrotor (1) und ebenfalls breitere Getrieberäder (7') am Nutenrotor (23) sowie größere Radial- und Axiallager (20, 22) verwendet werden.Compared to the exemplary embodiment according to FIG. 1, this is pressure-side bearing housing (5) designed so that wider gear wheels (6 ') on the rib rotor (1) and also wider gear wheels (7 ') on the slot rotor (23) and larger radial and axial bearings (20, 22) be used.
Die Getrieberäder (6', 7') werden mit Stirnzahnkupplungen (24, 27) über Zentralschrauben (18) mit den Rotoren (1, 2) verbunden. The gear wheels (6 ', 7') are with spur tooth clutches (24, 27) via central screws (18) with the Rotors (1, 2) connected.
- 11
- RippenrotorRib rotor
- 22nd
- NutenrotorSlot rotor
- 33rd
- Lagergehäuse SaugseiteBearing housing suction side
- 44th
- KompressorgehäuseCompressor housing
- 55
- Lagergehäuse DruckseiteBearing housing pressure side
- 6,6'6.6 '
- Getrieberad RippenrotorRibbed rotor gear wheel
- 7,7'7.7 '
- Getrieberad NutenrotorGear wheel slot rotor
- 88th
- Dichtungsgehäuse DruckseiteSeal housing pressure side
- 99
- Torsionswelle mit KupplungsflanschTorsion shaft with coupling flange
- 1010th
- Gasdichtung SaugseiteGas seal suction side
- 1111
- Lagersicherung SaugseiteStorage lock suction side
- 1212th
- Radiallager SaugseiteRadial bearing suction side
- 1313
- ÖlabstreiferOil scraper
- 1414
- Dichtungsgehäuse SaugseiteSeal housing suction side
- 1515
- Dichtscheibe SaugseiteSealing disc suction side
- 1616
- Dichtscheibe DruckseiteSealing disc pressure side
- 1717th
- Gasdichtung DruckseiteGas seal pressure side
- 1818th
- ZentralschraubeCentral screw
- 1919th
- Lagersicherung DruckseiteBearing lock on pressure side
- 2020th
- Radiallager DruckseiteRadial bearing pressure side
- 2121
- DistanzringSpacer ring
- 2222
- AxiallagerThrust bearing
- 2323
- WellenmutterShaft nut
- 2424th
- Stirnzahn-Kupplung GetrieberadseiteSpur tooth coupling gear wheel side
- 2525th
- LagerzapfenBearing journal
- 2626
- Mitnehmer TorsionswelleDriver torsion shaft
- 2727
- Stirnzahn-Kupplung RotorseiteFront tooth coupling rotor side
Claims (4)
- Dry-running rotor compressor with meshing engagement between a helically toothed ribbed rotor (1) and a helically toothed grooved rotor (2), with a bearing housing (3) at the suction side and a bearing housing (5) at the pressure side, wherein the bearing housing (5) at the pressure side has stub axles which project into bores within the rotors (1, 2) and are provided with slide bearings or roller bearings, with seals (17) arranged at the bearing housings (3, 5) and the rotor ends and with gearwheels (6, 7 or 6', 7') of a synchronising gear transmission between one end of each of the rotors (1, 2) and the bearing housing (5), characterised in that the bearing housing (3) at the suction side also has stub axles which project into bores within the rotors (1, 2) and are provided with slide bearings or roller bearings, that a torsion shaft (9) of a coupling half for the compressor drive is guided through a bore in the bearing housing at the suction side or pressure side and through one of the stub axles and that a respective seal housing (8, 14), in which the seals (17, 10) and sealing discs (16, 15) are mounted and directed against the end faces of the rotors (1, 2), is arranged between the ends of the rotors (1, 2) at the pressure side and suction side and the bearing housing (5).
- Rotor compressor according to claim 1, characterised in that radial tooth couplings (24, 27), which are detachably secured to the ends of the rotors (1, 2) at the pressure side by means of a central screw (18), are arranged between the ends of the rotors (1, 2) at the pressure side and the gearwheels (6', 7') with greater tooth engagement width.
- Rotor compressor according to claims 1 and 2, characterised in that gas barrier seals of static or dynamic mode of construction or a combination of both modes of construction are used as seals (10, 17).
- Rotor compressor according to claims 1 to 3, characterised in that the sealing discs (15, 16) are produced in known manner from a sintered PTFE and mica mixture or of a material with similar properties.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19513380A DE19513380C2 (en) | 1995-04-08 | 1995-04-08 | Sealing, storage and drive of the rotors of a dry-running screw rotor compressor |
| DE19513380 | 1995-04-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0736692A1 EP0736692A1 (en) | 1996-10-09 |
| EP0736692B1 true EP0736692B1 (en) | 2001-04-18 |
Family
ID=7759258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96101860A Expired - Lifetime EP0736692B1 (en) | 1995-04-08 | 1996-02-09 | Sealing, bearing support and driving of the rotors of a dry running screw compressor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5695327A (en) |
| EP (1) | EP0736692B1 (en) |
| JP (1) | JPH08284855A (en) |
| DE (1) | DE19513380C2 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19800825A1 (en) * | 1998-01-02 | 1999-07-08 | Schacht Friedrich | Dry compacting screw pump |
| US6241486B1 (en) | 1998-03-18 | 2001-06-05 | Flowserve Management Company | Compact sealless screw pump |
| EP0952351A1 (en) | 1998-04-21 | 1999-10-27 | Ateliers Busch S.A. | Volumetric machine |
| DE19820523A1 (en) * | 1998-05-08 | 1999-11-11 | Peter Frieden | Spindle screw pump assembly for dry compression of gases |
| DE19820622A1 (en) * | 1998-05-09 | 1999-11-11 | Peter Frieden | Demountable pump or compressor for chemical or food processing industry |
| US6652250B2 (en) * | 2000-10-16 | 2003-11-25 | Kobe Steel, Ltd. | Screw compressor having intermediate shaft bearing |
| US7121814B2 (en) * | 2004-09-30 | 2006-10-17 | Carrier Corporation | Compressor sound suppression |
| WO2006041494A1 (en) * | 2004-09-30 | 2006-04-20 | Carrier Corporation | Screw compressor seal |
| US20070092393A1 (en) * | 2005-10-26 | 2007-04-26 | General Electric Company | Gas release port for oil-free screw compressor |
| US10941770B2 (en) | 2010-07-20 | 2021-03-09 | Trane International Inc. | Variable capacity screw compressor and method |
| FR2964163A1 (en) * | 2010-10-12 | 2012-03-02 | Alcatel Lucent | Dry type vacuum pump e.g. spiral type vacuum pump, has rolling bearing interposed between rolling bearing support axle and axial wall of central housing of rotor shaft that is supported in rotation in main bearing |
| US10718334B2 (en) | 2015-12-21 | 2020-07-21 | Ingersoll-Rand Industrial U.S., Inc. | Compressor with ribbed cooling jacket |
| DE102017100537A1 (en) * | 2016-09-21 | 2018-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Method for producing a housing of a screw compressor |
| CN109538478A (en) * | 2018-11-27 | 2019-03-29 | 王廷华 | A kind of compressor |
| DE202018107141U1 (en) | 2018-12-13 | 2020-03-18 | Vogelsang Gmbh & Co. Kg | Rotary lobe pump with internal bearing |
| BE1026993B1 (en) * | 2019-01-29 | 2020-08-24 | Atlas Copco Airpower Nv | Dry-running System with Wear-resistant sealing element, sealing element therefor and method for assembling the system |
| EP3889431B1 (en) * | 2020-03-31 | 2023-12-20 | Alfa Laval Corporate AB | A rotary positive displacement pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2031125A (en) * | 1934-02-06 | 1936-02-18 | Erospha Inc | Spherical machine |
| GB2100353A (en) * | 1981-06-17 | 1982-12-22 | Zimmern Bernard | Rotary positive-displacement fluidmachines |
| DE3609996A1 (en) * | 1986-03-25 | 1987-10-01 | Mahle Gmbh | Screw-type compressor |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB343344A (en) * | 1930-03-12 | 1931-02-19 | Brown David & Sons Ltd | Improvements in or relating to rotary gear pumps |
| GB636417A (en) * | 1943-03-27 | 1950-04-26 | Joseph Earl Whitfield | Composite metal articles and the method of making the same |
| FR1039761A (en) * | 1951-07-11 | 1953-10-09 | Bronzavia Sa | Improvements to rotary gas pumps |
| US2746394A (en) * | 1951-08-11 | 1956-05-22 | Gen Motors Corp | Gear pump |
| GB884171A (en) * | 1958-06-04 | 1961-12-06 | Netzschkau Maschf Nema | Improvements in or relating to rotary displacement expansion machines |
| DE1403296A1 (en) * | 1959-09-19 | 1969-03-27 | Balzers Hochvakuum | Liquid pump |
| DD118696A1 (en) * | 1975-04-10 | 1976-03-12 | ||
| FR2530742B1 (en) * | 1982-07-22 | 1987-06-26 | Dba | VOLUMETRIC SCREW COMPRESSOR |
| US4504203A (en) * | 1983-01-18 | 1985-03-12 | Delta Screw Nederland B.V. | Apparatus adapted for use as a screw compressor for motor |
| FR2588322B1 (en) * | 1985-10-03 | 1989-10-13 | Bitar Joseph | HYDRAULIC MACHINE WITH MODULAR STRUCTURE |
| JPS62107285A (en) * | 1985-11-01 | 1987-05-18 | Hitachi Ltd | Screw compressor |
| US5024591A (en) * | 1989-06-21 | 1991-06-18 | Diesel Kiki Co., Ltd. | Vane compressor having reduced weight as well as excellent anti-seizure and wear resistance |
| DE4403648A1 (en) * | 1994-02-05 | 1995-08-10 | Gutehoffnungshuette Man | Screw compressor |
| DE4403649C2 (en) * | 1994-02-05 | 1999-10-07 | Ghh Rand Schraubenkompressoren | Bearing and drive of the rotors of a screw compressor |
-
1995
- 1995-04-08 DE DE19513380A patent/DE19513380C2/en not_active Expired - Fee Related
-
1996
- 1996-02-09 EP EP96101860A patent/EP0736692B1/en not_active Expired - Lifetime
- 1996-04-04 JP JP8116880A patent/JPH08284855A/en active Pending
- 1996-04-04 US US08/628,578 patent/US5695327A/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2031125A (en) * | 1934-02-06 | 1936-02-18 | Erospha Inc | Spherical machine |
| GB2100353A (en) * | 1981-06-17 | 1982-12-22 | Zimmern Bernard | Rotary positive-displacement fluidmachines |
| DE3609996A1 (en) * | 1986-03-25 | 1987-10-01 | Mahle Gmbh | Screw-type compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| US5695327A (en) | 1997-12-09 |
| DE19513380C2 (en) | 1997-09-04 |
| JPH08284855A (en) | 1996-10-29 |
| DE19513380A1 (en) | 1996-10-10 |
| EP0736692A1 (en) | 1996-10-09 |
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