EP1054160A1 - Positive displacement machine for compressible fluids - Google Patents

Positive displacement machine for compressible fluids Download PDF

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Publication number
EP1054160A1
EP1054160A1 EP00110442A EP00110442A EP1054160A1 EP 1054160 A1 EP1054160 A1 EP 1054160A1 EP 00110442 A EP00110442 A EP 00110442A EP 00110442 A EP00110442 A EP 00110442A EP 1054160 A1 EP1054160 A1 EP 1054160A1
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EP
European Patent Office
Prior art keywords
gears
shafts
motors
rotors
displacement machine
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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
EP00110442A
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German (de)
French (fr)
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EP1054160B1 (en
Inventor
Heiner Dr. Kösters
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Sterling Fluid Systems Germany GmbH
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Sterling Fluid Systems Germany GmbH
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Priority to EP00110442A priority Critical patent/EP1054160B1/en
Publication of EP1054160A1 publication Critical patent/EP1054160A1/en
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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
    • F04C29/0085—Prime movers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • F04C2230/601—Adjustment
    • 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
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F04C2240/402—Plurality of electronically synchronised motors

Definitions

  • the invention relates to a displacement machine for compressible Media, especially dry-running vacuum pump, with at least two shafts with rotors, which are designed as profile bodies and their profiles are gear-like when rotating intermesh and run without contact to each other, whereby the shafts are each driven by their own electric motors be, the angular positions of the shafts with resolvers the motors are determined on the basis of their signals be electronically synchronized, and being the waves Have gears that mesh and their angular play is smaller than that of the profile body.
  • the object of the invention is a displacement machine to create the type mentioned, in which the "Zeroing" the rotors and gears easily, quickly and can be set exactly with the help of the resolver.
  • the solution according to the invention is that at least one the gears directly with the resolver's rotor Axis and both together as a unit detachable with the shaft are connected.
  • the "zero position" or backlash is set according to the invention in the following way. It will be first a rotor to which the gear and the resolver are releasably attached is held. The gear can rotate run relative to the axis of this one rotor. The other rotor will then turn in either direction up to one Position rotated in the flanks of the profile body touch. The two contact angles are measured, and the rotor with its gear attached to it Set the middle position between these two angles and captured.
  • the first rotor is also still held. It but now the gear of the first rotor in both directions each up to the point of contact with the gear of the other rotor rotated. The contact angles are also found again. Then the gear is on the Set the mean of these two points of contact and firmly connected to the corresponding shaft, in particular clamped by tightening screws. Both the rotors or profile body as well as the gears exactly in the middle position between the two positions, where they touch or would touch. this is the Reset, with the value of which the synchronization is then carried out by carrying out the regulation so that the relative position of the two shafts, rotors and gears corresponds to this value as far as possible during operation.
  • the gears are advantageously attached to one shaft end, because they are particularly easy to access what attaching the initially loosened gear to its shaft facilitated.
  • the displacement machine advantageously has a differential control for the speed of the motors.
  • Synchronization with the setting of the backlash or the "zero position" is already a well synchronized Operation reached.
  • the operational behavior is still improved, if both rotors are not set to one independently Setpoint to be synchronized, but the synchronization primarily due to differences in angular positions he follows. For example, liquid penetrates the Pump room one, because of the opposite gases the rotors strong a thousand times higher density of the liquid braked, but the braking for both rotors approximately done immediately. Any differences that may exist then be compensated for by the synchronization. This would be not the case when the synchronization is from outside predetermined value would take place. Of course you will find but also an additional regulation from the outside instead to the to be able to enter the desired speed. This regulation, that works in the same sense on both motors, but is proportional slow so that rapid speed differences be eliminated by the difference control.
  • Fig. 1 there are one of several Parts of assembled pump housing 1 with bearings 2 two shafts 3 stored on which profile body 4 are attached, which interlock and in the pump chamber 5 through a connection 13 that Suck the medium to be pumped from above and not through the bottom Eject the openings shown.
  • the waves 3 and the profile body 4 are driven by electric motors 6, whereby for each shaft 3 a separate electric motor 6 is provided.
  • the motors 6 are made using resolvers 8 electronically synchronized. In adverse operating conditions, if the electronic synchronization is not sufficient, first touch the gears 7 because they are less Have angular play as the rotors 4. Usually touch but not the gears 7, so that lubrication these gears can be dispensed with.
  • Fig. 2 shows a section of the illustration of Fig. 1 in enlarged scale.
  • the gear 7 connected to the resolver rotor 9, which is opposite the shaft 3 is rotatable.
  • the gear 7 can in turn with the help of Clamping element 13 are fixed on the shaft 3.
  • the rotor 11 of the resolver 8 is arranged while the stator 12 of the resolver 8 is arranged fixed to the housing.
  • both the rotors 4 and the gears 3 is first in 1 right rotor 4 with its shaft 3, the screw 10 is loosened so that the right gear 7 can rotate.
  • the left wave 3 is then in rotated in both directions until the rotors 4 touch, taking these two contact angles using the resolver 8 can be determined.
  • the left wave 3 will then to the mean between these two points of contact set.
  • the right shaft 3 of the right rotor continues captured. It will then be the one on the right Gear 7 moves in both directions until it is touches left gear.
  • the two contact angles are with the right resolver 8 measured.
  • the gear 7 is then on set the mean between these two angles and is tightened with the screw 10. Both rotors 4 and both gears 3 are thus in the middle position between the points of contact. At this value the relative angle the operation is then synchronized.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Lubricants (AREA)
  • Gear Transmission (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Prostheses (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

The pump has shafts (3) with profiled rotors (4), meshing toothed gears (7) on the shafts, and resolvers (8) to determine th angular positions of the shafts. At least one of the gears is directly connected to the rotor of the resolver of its shaft, and unit is connected detachable to the shaft. The toothed gears are fastened to the ends of the shafts. The pump has differential regulation for the RPM of the motors (6) driving the shafts. These are rotary current motors with permanent magnetic rotors.

Description

Die Erfindung betrifft eine Verdrängermaschine für kompressible Medien, insbesondere trockenlaufende Vakuumpumpe, mit mindestens zwei Wellen mit Rotoren, die als Profilkörper ausgebildet sind und deren Profile bei der Drehung zahnradartig ineinandergreifen und berührungsfrei zueinander laufen, wobei die Wellen jeweils durch eigene Elektromotoren angetrieben werden, wobei die Winkelpositionen der Wellen mit Resolvern bestimmt werden, aufgrund von deren Signalen die Motoren elektronisch synchronisiert werden, und wobei die Wellen Zahnräder aufweisen, die ineinandergreifen und deren Winkelspiel kleiner ist als dasjenige der Profilkörper.The invention relates to a displacement machine for compressible Media, especially dry-running vacuum pump, with at least two shafts with rotors, which are designed as profile bodies and their profiles are gear-like when rotating intermesh and run without contact to each other, whereby the shafts are each driven by their own electric motors be, the angular positions of the shafts with resolvers the motors are determined on the basis of their signals be electronically synchronized, and being the waves Have gears that mesh and their angular play is smaller than that of the profile body.

Es war lange Zeit üblich, die Rotoren solcher Verdrängermaschinen durch Zahnräder zu synchronisieren, wobei normalerweise nur ein Motor vorgesehen war. Die Zahnräder mußten aber geschmiert werden, so daß sich eine Verunreinigung des gepumpten Medium nur durch sehr hohen Aufwand bei der Abdichtung des Getriebes gegen die Rotoren und den eigentlichen Pumpenraum vermeiden ließ. Die entsprechenden Dichtungen nutzen aber ab, so daß in mehr oder weniger regelmäßigen Intervallen die Pumpe auseinandergenommen werden mußte, um die Dichtungen zu ersetzen. The rotors of such displacement machines were common for a long time by synchronizing gears, normally only one engine was provided. The gears had to be lubricated so that there is contamination of the pumped Medium only through a very high effort in sealing of the gearbox against the rotors and the actual one Pump room avoided. Use the appropriate seals but off, so that at more or less regular intervals the pump had to be taken apart in order to To replace seals.

Diese Probleme werden bei einer Pumpe der eingangs genannten Art (US-5 836 746) dadurch vermieden, daß jeder der Rotoren durch einen eigenen Elektromotor angetrieben wird, die elektronisch synchronisiert sind. Durch Resolver werden die Winkelpositionen der beiden Wellen laufend bestimmt. Die Resolversignale werden einer Elektronik zugeführt, die die beiden Elektromotoren so synchron miteinander betreibt, daß sich die Rotoren nicht berühren können. Damit sich bei widrigen Betriebszuständen bei ungenau arbeitender Synchronisation die Rotoren nicht berühren können, was zu Beschädigung der Oberflächen derselben führen würde, ist bei dieser Pumpe auf jeder Welle ein Zahnrad vorgesehen. Die beiden Zahnräder greifen ineinander und haben ein geringeres Winkelspiel als die Profilkörper. Versagt daher die elektronische Synchronisation, so berühren sich zuerst die Zahnräder, die bei Normalbetrieb berührungsfrei laufen. Die Profilkörper können sich aber weiterhin nicht berühren, da sie ein größeres Winkelspiel als die Zahnräder haben.These problems are with a pump of the type mentioned Art (US-5 836 746) avoided by making each of the rotors is powered by its own electric motor, which is electronic are synchronized. The resolver changes the angular positions of the two waves continuously determined. The resolver signals are fed to an electronics, the two Operates electric motors so synchronously with each other that the Cannot touch rotors. So that in adverse operating conditions with inaccurate synchronization the Rotors cannot touch, causing surface damage the same would lead to this pump on everyone Shaft provided a gear. The two gears grip into each other and have less angular play than that Profile body. So electronic synchronization fails, so the gears touch first, which during normal operation run without contact. The profile body can but still do not touch as they have a larger angular play than the gears have.

Ein Problem bei einer Verdrängermaschine dieser Art besteht dabei darin, die Rotoren und Zahnräder so einzustellen, daß beim Betrieb sowohl die Flanken der Rotoren als auch die Flanken der Zahnräder möglichst großen Abstand voneinander haben. Im Idealfall sollte die Stellung der Rotoren und der Zahnräder so sein, daß die Rotoren zueinander eine Winkelstellung einnehmen, die in der Mitte zwischen den beiden Winkelstellungen liegt, bei denen Berührung stattfindet. Dasselbe gilt für die Zahnräder. Mit dieser "Nullstellung" würde dann die Verdrängermaschine im Normalbetrieb betrieben. Diese Einstellung ist aber sehr schwierig zu bewirken. Eine Einstellung mit mechanischen Mitteln ist mühsam und ungenau, da das Winkelspiel der Zahnräder und der Rotoren nur sehr klein ist und sehr klein sein muß, damit der Spalt zwischen den Profilkörpern, durch den eine Rückströmung beim Pumpen stattfindet, möglichst klein ist.There is a problem with this type of positive displacement machine thereby in adjusting the rotors and gears so that both the flanks of the rotors and the Flanks of the gears as far apart as possible to have. Ideally, the position of the rotors and the Gears so that the rotors are at an angle to each other occupy the middle between the two angular positions lies where touch takes place. The same thing applies to the gears. With this "zeroing" would then the displacement machine is operated in normal operation. This But attitude is very difficult to achieve. An attitude with mechanical means is tedious and imprecise because the angular play of the gears and the rotors is very small is and must be very small so that the gap between the Profile bodies through which a backflow takes place during pumping is as small as possible.

Bei einer Verdrängermaschine der eingangs genannten Art (US-5,417,551 A) erfolgt zwar eine Einstellung der Zahnräder auf den Mittelwert der Winkeleinstellungen, bei denen sich die Zahnräder berühren. Der Entgegenhaltung ist aber nichts zu entnehmen, wie die kritische Einstellung gewonnen werden kann, daß der Mittelwert der beiden Winkeleinstellungen, bei dem sich die Flanken der Rotoren berühren, mit dem Mittelwert der entsprechenden Winkelstellungen der Zahnräder zusammenfällt. Nur dann ist aber ein problemloser Betrieb möglich. Es wird lediglich beschrieben, wie der Mittelwert der Winkelstellungen der Zahnräder eingestellt wird. Dabei ist vorausgesetzt, daß die Mittelwerte für die Rotoren und die Mittelwerte für die Zahnräder zusammenfallen. Es ist zwar davon die Rede, daß das Spiel der Zahnräder auf der einen Seite nicht größer sein darf als das auf der anderen, da sich sonst die Rotoren berühren. Ein solches Problem tritt aber nur auf, wenn die Mittelpunkte der Rotoren und der Zahnräder nicht zusammenfallen. Tritt dieses Problem auf, so kann dies nur durch relative Winkelverstellung zwischen Rotoren und Zahnrädern erfolgen, für welche Verstellung der Entgegenhaltung aber keine Hinweise zu entnehmen sind. Eine solche Verstellung dürfte auch nicht möglich sein, da sich die Zahnräder weit im Innern der Maschine befinden, die Winkelsensoren mehr oder weniger am Ende der entsprechenden Welle angeordnet sind und Zahnrad und Rotor des entsprechenden Winkelsensors nicht direkt miteinander verbunden sind. In a displacement machine of the type mentioned at the beginning (US Pat. No. 5,417,551 A) the gears are adjusted the mean of the angle settings at which the Touch gears. There is nothing to be said see how the critical attitude can be obtained can that the mean of the two angle settings, at which the flanks of the rotors touch, with the mean the corresponding angular positions of the gears coincides. Only then is trouble-free operation possible. It it only describes how the mean of the angular positions the gears are adjusted. It is assumed that the mean values for the rotors and the mean values for the gears to collapse. It is the one Talk about the game of gears not on one side may be larger than that on the other, otherwise the Touch the rotors. But such a problem only occurs if the centers of the rotors and the gears do not coincide. If this problem occurs, it can only through relative angular adjustment between rotors and gears for which adjustment of the citation but no information can be found. Such an adjustment should also not be possible because the gears located far inside the machine, the angle sensors more or less are located at the end of the corresponding shaft and the gear and rotor of the corresponding angle sensor are not are directly connected.

Die Aufgabe der Erfindung besteht darin, eine Verdrängermaschine der eingangs genannten Art zu schaffen, bei der die "Nullstellung" der Rotoren und der Zahnräder einfach, schnell und genau mit Hilfe der Resolver eingestellt werden kann.The object of the invention is a displacement machine to create the type mentioned, in which the "Zeroing" the rotors and gears easily, quickly and can be set exactly with the help of the resolver.

Die erfindungsgemäße Lösung besteht darin, daß mindestens eines der Zahnräder direkt mit dem Rotor des Resolvers seiner Achse und beide zusammen als Einheit lösbar mit der Welle verbunden sind.The solution according to the invention is that at least one the gears directly with the resolver's rotor Axis and both together as a unit detachable with the shaft are connected.

Die Einstellung der "Nullstellung" bzw. des Flankenspiels geschieht erfindungsgemäß auf folgende Weise. Es wird zunächst ein Rotor, an dem das Zahnrad und der Resolver lösbar befestigt ist, festgehalten. Das Zahnrad kann dabei eine Drehbewegung relativ zur Achse dieses einen Rotors ausführen. Der andere Rotor wird dann in beiden Drehrichtungen bis zu einer Stellung gedreht, in der sich die Flanken der Profilkörper berühren. Die beiden Berührungswinkel werden gemessen, und der Rotor mit seinem daran befestigten Zahnrad wird auf die Mittelstellung zwischen diesen beiden Winkeln eingestellt und festgehalten.The "zero position" or backlash is set according to the invention in the following way. It will be first a rotor to which the gear and the resolver are releasably attached is held. The gear can rotate run relative to the axis of this one rotor. The other rotor will then turn in either direction up to one Position rotated in the flanks of the profile body touch. The two contact angles are measured, and the rotor with its gear attached to it Set the middle position between these two angles and captured.

Der erste Rotor wird ebenfalls weiterhin festgehalten. Es wird nun aber das Zahnrad des ersten Rotors in beiden Richtungen jeweils bis zum Berührungspunkt mit dem Zahnrad des anderen Rotors gedreht. Die Berührungswinkel werden ebenfalls wieder festgestellt. Anschließend wird das Zahnrad auf den Mittelwert dieser beiden Berührungspunkte eingestellt und fest mit der entsprechenden Welle verbunden, insbesondere durch Anziehen von Schrauben festgeklemmt. Sowohl die Rotoren bzw. Profilkörper als auch die Zahnräder befinden ich damit genau in der Mittelstellung zwischen den beiden Stellungen, in denen sie sich berühren oder berühren würden. Dies ist die Nullstellung, mit deren Wert dann die Synchronisierung durchgeführt wird, indem die Regelung so durchgeführt wird, daß die Relativstellung der beiden Wellen, Rotoren und Zahnräder beim laufenden Betrieb möglichst diesem Wert entspricht.The first rotor is also still held. It but now the gear of the first rotor in both directions each up to the point of contact with the gear of the other rotor rotated. The contact angles are also found again. Then the gear is on the Set the mean of these two points of contact and firmly connected to the corresponding shaft, in particular clamped by tightening screws. Both the rotors or profile body as well as the gears exactly in the middle position between the two positions, where they touch or would touch. this is the Reset, with the value of which the synchronization is then carried out by carrying out the regulation so that the relative position of the two shafts, rotors and gears corresponds to this value as far as possible during operation.

Vorteilhafterweise sind die Zahnräder an einem Wellenende angebracht, da sie dann besonders leicht zugänglich sind, was das Befestigen des zunächst gelösten Zahnrades an seiner Welle erleichtert.The gears are advantageously attached to one shaft end, because they are particularly easy to access what attaching the initially loosened gear to its shaft facilitated.

Vorteilhafterweise weist die Verdrängermaschine eine Differenzregelung für die Drehzahl der Motoren auf. Durch die erfindungsgemäße Synchronisation mit der Einstellung des Flankenspiels bzw. der "Nullstellung" wird schon ein gut synchroner Betrieb erreicht. Das Betriebsverhalten wird noch verbessert, wenn beide Rotoren nicht auf einen unabhängig vorgegebenen Sollwert synchronisiert werden, sondern die Synchronisation in erster Linie aufgrund von Differenzen der Winkelstellungen erfolgt. Dringt zum Beispiel Flüssigkeit in den Pumpenraum ein, so werden wegen der gegenüber Gasen ungefähr tausendmal höheren Dichte der Flüssigkeit die Rotoren stark abgebremst, wobei die Abbremsung aber für beide Rotoren ungefähr gleich erfolgt. Eventuell vorhandene Unterschiede können dann durch die Synchronisation ausgeglichen werden. Dies wäre nicht der Fall, wenn die Synchronisation auf einen von außen vorgegebenen Wert erfolgen würde. Selbstverständlich findet aber auch eine zusätzliche Regelung von außen statt, um die anzustrebende Drehzahl eingeben zu können. Diese Regelung, die auf beiden Motoren im gleichen Sinne wirkt, ist aber verhältnismäßig langsam, so daß schnelle Drehzahlunterschiede durch die Differenzregelung beseitigt werden. The displacement machine advantageously has a differential control for the speed of the motors. By the invention Synchronization with the setting of the backlash or the "zero position" is already a well synchronized Operation reached. The operational behavior is still improved, if both rotors are not set to one independently Setpoint to be synchronized, but the synchronization primarily due to differences in angular positions he follows. For example, liquid penetrates the Pump room one, because of the opposite gases the rotors strong a thousand times higher density of the liquid braked, but the braking for both rotors approximately done immediately. Any differences that may exist then be compensated for by the synchronization. This would be not the case when the synchronization is from outside predetermined value would take place. Of course you will find but also an additional regulation from the outside instead to the to be able to enter the desired speed. This regulation, that works in the same sense on both motors, but is proportional slow so that rapid speed differences be eliminated by the difference control.

Als besonders zweckmäßig hat sich für den Antrieb erwiesen, wenn die Motoren Drehstrommotoren mit permanent-magnetischem Rotor sind.It has proven particularly expedient for the drive if the motors are three-phase motors with permanent magnetic Rotor.

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

Fig. 1
in einem Querschnitt eine erfindungsgemäße Verdrängermaschine; und
Fig. 2
eine vergrößerte Darstellung der erfindungsgemäßen Anordnung der Resolver.
The invention is described below using an advantageous embodiment with reference to the accompanying drawings. Show it:
Fig. 1
in a cross section a displacement machine according to the invention; and
Fig. 2
an enlarged view of the arrangement of the resolver according to the invention.

Wie dies in Fig. 1 gezeigt ist, sind in einem aus mehreren Teilen aufgebauten Pumpengehäuse 1 mit Lagern 2 zwei Wellen 3 gelagert, auf denen Profilkörper 4 befestigt sind, die ineinandergreifen und im Pumpenraum 5 durch einen Anschluß 13 das zu fördernde Medium von oben ansaugen und unten durch nicht gezeigte Öffnungen ausstoßen. Die Wellen 3 und die Profilkörper 4 werden durch Elektromotoren 6 angetrieben, wobei für jede Welle 3 ein separater Elektromotor 6 vorgesehen ist. Unten an den Wellen 3 sind zwei ineinandergreifende Zahnräder 7 vorgesehen. Die Motoren 6 werden mit Hilfe von Resolvern 8 elektronisch synchronisiert. Bei widrigen Betriebsbedingungen, wenn die elektronische Synchronisation nicht ausreicht, berühren sich zunächst die Zahnräder 7, da sie ein geringeres Winkelspiel als die Rotoren 4 aufweisen. Normalerweise berühren sich aber die Zahnräder 7 nicht, so daß auf eine Schmierung dieser Zahnräder verzichtet werden kann. As shown in Fig. 1, there are one of several Parts of assembled pump housing 1 with bearings 2 two shafts 3 stored on which profile body 4 are attached, which interlock and in the pump chamber 5 through a connection 13 that Suck the medium to be pumped from above and not through the bottom Eject the openings shown. The waves 3 and the profile body 4 are driven by electric motors 6, whereby for each shaft 3 a separate electric motor 6 is provided. Below there are two intermeshing gear wheels 7 on the shafts 3 intended. The motors 6 are made using resolvers 8 electronically synchronized. In adverse operating conditions, if the electronic synchronization is not sufficient, first touch the gears 7 because they are less Have angular play as the rotors 4. Usually touch but not the gears 7, so that lubrication these gears can be dispensed with.

Fig. 2 zeigt einen Ausschnitt der Darstellung der Fig. 1 in vergrößertem Maßstab. Auf der rechten Welle 3 ist das Zahnrad 7 mit de Resolverrotor 9 verbunden, der gegenüber der Welle 3 drehbar ist. Das Zahnrad 7 kann seinerseits mit Hilfe des Spannelementes 13 auf der Welle 3 fixiert werden. Auf der Hülse 9 ist der Rotor 11 des Resolvers 8 angeordnet, während der Stator 12 des Resolvers 8 gehäusefest angeordnet ist.Fig. 2 shows a section of the illustration of Fig. 1 in enlarged scale. On the right shaft 3 is the gear 7 connected to the resolver rotor 9, which is opposite the shaft 3 is rotatable. The gear 7 can in turn with the help of Clamping element 13 are fixed on the shaft 3. On the Sleeve 9, the rotor 11 of the resolver 8 is arranged while the stator 12 of the resolver 8 is arranged fixed to the housing.

Zur Einstellung der idealen Stellung oder Nullstellung sowohl der Rotoren 4 als auch der Zahnräder 3 wird zunächst der in Fig. 1 rechts befindliche Rotor 4 mit seiner Welle 3 festgehalten, wobei die Schraube 10 gelöst ist, so daß sich das rechte Zahnrad 7 drehen kann. Die linke Welle 3 wird dann in beiden Richtungen so weit gedreht, bis sich die Rotoren 4 berühren, wobei diese beiden Berührungswinkel mit Hilfe des Resolvers 8 festgestellt werden. Die linke Welle 3 wird dann auf den Mittelwert zwischen diesen beiden Berührungspunkten eingestellt. Die rechte Welle 3 des rechten Rotors wird wei-terhin festgehalten. Es wird dann das rechts befindliche Zahnrad 7 in beiden Richtungen so weit bewegt, bis es das linke Zahnrad berührt. Die beiden Berührungswinkel werden mit dem rechen Resolver 8 gemessen. Das Zahnrad 7 wird dann auf den Mittelwert zwischen diesen beiden Winkeln eingestellt und wird mit Hilfe der Schraube 10 festgezogen. Beide Rotoren 4 und beide Zahnräder 3 befinden sich damit in der Mittelstellung zwischen den Berührungspunkten. Auf diesen Wert der Relativwinkel wird dann der Betrieb synchronisiert.To set the ideal position or zero position both the rotors 4 and the gears 3 is first in 1 right rotor 4 with its shaft 3, the screw 10 is loosened so that the right gear 7 can rotate. The left wave 3 is then in rotated in both directions until the rotors 4 touch, taking these two contact angles using the resolver 8 can be determined. The left wave 3 will then to the mean between these two points of contact set. The right shaft 3 of the right rotor continues captured. It will then be the one on the right Gear 7 moves in both directions until it is touches left gear. The two contact angles are with the right resolver 8 measured. The gear 7 is then on set the mean between these two angles and is tightened with the screw 10. Both rotors 4 and both gears 3 are thus in the middle position between the points of contact. At this value the relative angle the operation is then synchronized.

Claims (4)

Verdrängermaschine für kompressible Medien, insbesondere trockenlaufende Vakuumpumpe, mit mindestens zwei Wellen (3) mit Rotoren (4), die als Profilkörper (4) ausgebildet sind und deren Profile bei der Drehung zahnradartig ineinandergreifen und berührungsfrei zueinander laufen, wobei die Wellen (3) jeweils durch eigene Elektromotoren (6) angetrieben werden, wobei die Winkelpositionen der Wellen (3) mit Resolvern (8) bestimmt werden, aufgrund von deren Signalen die Motoren (6) elektronisch synchronisiert werden, und wobei die Wellen (3) Zahnräder (7) aufweisen, die ineinandergreifen und deren Winkelspiel kleiner ist als dasjenige der Profilkörper (4), dadurch gekennzeichnet, daß mindestens eines der Zahnräder (7) direkt mit dem Rotor (11) des Resolvers (8) seiner Welle (3) und beide zusammen als Einheit lösbar mit der Welle (3) verbunden sind.Displacement machine for compressible media, in particular dry-running vacuum pump, with at least two shafts (3) with rotors (4), which are designed as profile bodies (4) are and their profiles mesh like a gear during rotation and run without contact to each other, whereby the shafts (3) each with their own electric motors (6) are driven, the angular positions of the Waves (3) with resolvers (8) can be determined from whose signals the motors (6) are electronically synchronized and the shafts (3) gears (7) have that interlock and their angular play is smaller than that of the profile body (4), thereby characterized in that at least one of the gears (7) directly with the rotor (11) of the resolver (8) of its shaft (3) and both together as a unit releasable with the shaft (3) are connected. Verdrängermaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Zahnräder (7) an einem Wellenende angebracht sind.Displacement machine according to claim 1, characterized in that the gears (7) attached to a shaft end are. Verdrängermaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie eine Differenzregelung für die Drehzahl der Motoren (6) aufweist.Displacement machine according to claim 1 or 2, characterized in that they have a differential scheme for the Revs of the motors (6). Verdrängermaschine nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Motoren (6) Drehstrommotoren mit permanent-magnetischem Rotor sind.Displacement machine according to Claims 1 to 3, characterized in that the motors (6) three-phase motors with permanent magnetic Rotor.
EP00110442A 1999-05-18 2000-05-16 Positive displacement machine for compressible fluids Expired - Lifetime EP1054160B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00110442A EP1054160B1 (en) 1999-05-18 2000-05-16 Positive displacement machine for compressible fluids

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99109792 1999-05-18
EP99109792A EP1061260A1 (en) 1999-05-18 1999-05-18 Positive displacement machine for compressible fluids
EP00110442A EP1054160B1 (en) 1999-05-18 2000-05-16 Positive displacement machine for compressible fluids

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EP1054160A1 true EP1054160A1 (en) 2000-11-22
EP1054160B1 EP1054160B1 (en) 2004-02-11

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EP99109792A Withdrawn EP1061260A1 (en) 1999-05-18 1999-05-18 Positive displacement machine for compressible fluids
EP00110442A Expired - Lifetime EP1054160B1 (en) 1999-05-18 2000-05-16 Positive displacement machine for compressible fluids

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US (1) US6485274B2 (en)
EP (2) EP1061260A1 (en)
JP (1) JP2001020886A (en)
KR (1) KR100619608B1 (en)
AT (1) ATE259470T1 (en)
AU (1) AU764062B2 (en)
CA (1) CA2308665C (en)
DE (1) DE50005238D1 (en)
DK (1) DK1054160T3 (en)
ES (1) ES2214191T3 (en)
NO (1) NO323183B1 (en)
SG (1) SG85178A1 (en)
TW (1) TW499550B (en)
ZA (1) ZA200002310B (en)

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EP2634366A3 (en) * 2012-01-31 2015-11-18 Jung & Co. Gerätebau GmbH Dual spindle helical spindle pump with a single-entry design with gears for rotatively coupling the spindles
DE102020103384A1 (en) 2020-02-11 2021-08-12 Gardner Denver Deutschland Gmbh Screw compressor with rotors mounted on one side
WO2021228793A1 (en) 2020-05-11 2021-11-18 Ateliers Busch Sa Dry vacuum pump

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CN100526641C (en) * 2005-02-07 2009-08-12 开利公司 Terminal board of compressor
GB0705971D0 (en) * 2007-03-28 2007-05-09 Boc Group Plc Vacuum pump
EP2275683B1 (en) * 2009-06-18 2017-01-11 Maag Pump Systems AG Method for controlling a gear pump
JP6240229B2 (en) * 2015-02-25 2017-11-29 株式会社荏原製作所 Vacuum pump
WO2018024050A1 (en) * 2016-08-05 2018-02-08 北京朗禾科技有限公司 Bi-motor composite-rotor double-shaft transmission device
CN106762646A (en) * 2016-12-27 2017-05-31 北京朗禾科技有限公司 A kind of bi-motor composite rotors Double-axis transmission equipment
CN106050664A (en) * 2016-08-05 2016-10-26 北京朗禾科技有限公司 Composite rotor vacuum pump
DE102018210922A1 (en) * 2018-07-03 2020-01-09 Leybold Gmbh Dual or multi-shaft vacuum pump
CN114837914A (en) * 2022-06-08 2022-08-02 南通霖沐机械设备有限公司 Double-cylinder air compressor

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EP2634366A3 (en) * 2012-01-31 2015-11-18 Jung & Co. Gerätebau GmbH Dual spindle helical spindle pump with a single-entry design with gears for rotatively coupling the spindles
DE102020103384A1 (en) 2020-02-11 2021-08-12 Gardner Denver Deutschland Gmbh Screw compressor with rotors mounted on one side
WO2021228793A1 (en) 2020-05-11 2021-11-18 Ateliers Busch Sa Dry vacuum pump
WO2021228355A1 (en) 2020-05-11 2021-11-18 Ateliers Busch Sa Dry vacuum pump

Also Published As

Publication number Publication date
US6485274B2 (en) 2002-11-26
DE50005238D1 (en) 2004-03-18
EP1054160B1 (en) 2004-02-11
KR100619608B1 (en) 2006-09-04
CA2308665C (en) 2008-01-22
AU764062B2 (en) 2003-08-07
NO323183B1 (en) 2007-01-15
JP2001020886A (en) 2001-01-23
EP1061260A1 (en) 2000-12-20
DK1054160T3 (en) 2004-06-14
CA2308665A1 (en) 2000-11-18
KR20000077314A (en) 2000-12-26
NO20002461D0 (en) 2000-05-12
US20020141886A1 (en) 2002-10-03
ES2214191T3 (en) 2004-09-16
NO20002461L (en) 2000-11-20
TW499550B (en) 2002-08-21
ATE259470T1 (en) 2004-02-15
ZA200002310B (en) 2000-12-20
AU3533200A (en) 2000-11-23
SG85178A1 (en) 2001-12-19

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