EP1075601B1 - Vacuum pump - Google Patents
Vacuum pump Download PDFInfo
- Publication number
- EP1075601B1 EP1075601B1 EP99923485A EP99923485A EP1075601B1 EP 1075601 B1 EP1075601 B1 EP 1075601B1 EP 99923485 A EP99923485 A EP 99923485A EP 99923485 A EP99923485 A EP 99923485A EP 1075601 B1 EP1075601 B1 EP 1075601B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotors
- pump
- pump chamber
- pump according
- pressure
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- FNYLWPVRPXGIIP-UHFFFAOYSA-N Triamterene Chemical compound NC1=NC2=NC(N)=NC(N)=C2N=C1C1=CC=CC=C1 FNYLWPVRPXGIIP-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- 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
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
- F04C29/122—Arrangements for supercharging the working space
-
- 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
- F04C18/123—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 radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth
Definitions
- the invention relates to a pump for the simultaneous generation of Pressure and vacuum.
- Such pumps are advantageous when an industrial process Requires compressed air and negative pressure at the same time, since the pump only needs a drive.
- a separate charging port that communicates with the atmosphere is connected to ensure the volume flow for the compressed air. Accordingly, several must be separated from each other in the pump chamber Cells are formed. In the prior art, this is only with rotary slide systems successful which are known for example from GB-A-818 691. But rotary valves are subject to wear and can only be lubricated if special materials are used operate.
- a pump for simultaneous Generation of compressed air and negative pressure provided that is almost wear-free and without the use of special materials can be manufactured.
- rotate in the pump chamber has two at least three-bladed rotors around parallel, axes offset against each other and combing without contact, to separate from each other with the peripheral wall of the pump chamber To form cells.
- the rotors can be in the pump chamber those for the simultaneous generation of compressed air and vacuum differentiate required cells. Because the rotors contactless with each other and also with the peripheral wall of the Pump chamber interact, occurs in the area of the pump chamber no wear and tear.
- the sealing gap between the rotors can be kept very small by optimizing their geometry; he is only a fraction of a millimeter in practical versions, so that good pressure and vacuum values are guaranteed. These values become even better with increasing operating time, since the Time-forming deposits to reduce the size of the sealing gap to lead.
- a pump with two three-bladed rotors that run in opposite directions around parallel axes rotate, is already known from DE-A-2 422 857. This However, the pump has no charging connection and is therefore not suitable for simultaneous generation of compressed air and negative pressure.
- the pump according to the invention is particularly suitable for use in suitable for paper processing industries, mainly for applications, which do not provide or adjust compressed air separately and Require vacuum.
- Compressed air is e.g. to blow on one side Stacks of paper needed to support sheet separation.
- the pulsating compressed air generation by the pump according to the invention proves to be useful here, since the paper edges by intermittent occurring compressed air can be separated more easily. Is negative pressure in such applications for sucking the top sheet of paper required.
- the rotors form with the pump chamber connected to the suction port through which Rotation of the rotors and their volume increasing suction cell Pressure cell that reduces its volume when the rotors rotate and is connected to the pressure connection.
- This pressure cell is out two initially separated from each other in the course of the rotation of the rotors Charging cells formed, each with an associated charging port have and with the further rotation of the rotors with each other Pressure cell are combined.
- the charging cells are before their union essentially isobar and isochoric in the pump chamber, i.e. the air in the charging cells experiences at the displacement of the charging cells essentially no pressure and no volume change.
- the single-stage pump for the simultaneous generation of Pressure and vacuum has a housing that consists of a load-bearing Middle part 10, one on one side of the middle part 10 attached housing cover 12, one on the other side of the Middle part 10 attached housing ring 14 and one on the housing ring 14 adjoining cover plate 16 there. Between the middle part 10, the housing ring 14 and the cover plate 16 is a pump chamber 18 educated.
- a pump chamber 18 educated in the opposite wall parts of the Housing cover 12 and the middle part 10 are two shafts 20, 22 Flying parallel to and offset from each other in ball bearings stored.
- the pinion 24, 26 are in meshing engagement with one another so that the shafts 20, 22 rotate synchronously with each other in opposite directions.
- For the rotary drive is the lower shaft 22 led out of the housing cover 12.
- each rotor has 30, 32 three wings 30a and 32a.
- the pump chamber 18 has the side view Form of two intersecting circles, joined together in the form of an "8" are.
- the blades 30a of the rotor 30 have a shape that the shape of the blades 32a of the rotor 32 is different.
- the geometry the wing 30a, 32a and the pump chamber 18 is determined so that at the rotation of the rotors 30, 32 a plurality of separate cells are formed, as with reference to Figures 4a to 4h further explained in more detail below by the wings 30a, 32a without contact a sealing gap of a fraction of 1 mm above and along slide the outer circumference of the pump chamber 18.
- the cover plate 16 is provided with a series of cutouts, which is closed to the outside by an attached closure plate 36 become.
- the closure plate 36 are two pipe sockets 42, 44th screwed.
- the upper pipe socket 42 forms the suction connection and is connected to a recess 50 of the cover plate 16.
- the lower Pipe socket 44 forms the pressure connection and is with a recess 52 connected in the cover plate 16.
- Two further cutouts 54a, 54b in the cover plate 16 are open to the atmosphere and form charging connections.
- Figure 4a shows the rotors 30, 32 in a rotational position in which their wings 30a, 32a with the wall of the pump chamber 18 a closed, only common to the recess 50 Form cell 60.
- This cell 60 enlarges in the further Rotation of the rotors 30, 32 their volume, as can be seen in Figure 4b.
- This cell 60 is therefore a suction cell.
- FIG. 4c shows two cells 62a, 62b which are separate from one another arise immediately after the state shown in FIG cell 60 was separated into two sub-cells.
- the rotor 30 assigned cell 62a already borders the recess 54a, and the Cell 62b associated with rotor 32 approaches recess 54b.
- Figure 4d are the cells 62a, 62b with those leading to the atmosphere Recesses 54a and 54b in connection and are filled with air and charged to ambient pressure so that the air mass flow increases becomes.
- the cells 62a, 62b are thus charging cells.
- the pump chamber 18 is free of any lubricant because the Work rotors 30, 32 without contact. To the drive side is the Pump chamber 18 sealed by seals on the shafts 20, 22.
- the housing can be equipped with cooling fins for cooling be arranged, and by one on the side of the GcHouseldeckels 12 Cooling fan is cooling air from the cover plate 16 over the Housing ring 14, the middle part 10 and the housing cover 12 out.
- a resonance damper is used to dampen the operating noise is matched to the operating frequency of the pump. This frequency is due to the three-bladed design of the rotors triple speed of the shafts 20, 22. The increased operating frequency facilitates the accommodation of the resonance damper because of its length is reduced accordingly.
- the described flying bearing arrangement of the rotors is advantageous up to a volume flow of approximately 300 m 3 / h.
- Pumps with a larger volume flow are preferably designed with rotors mounted on both sides. In this case, connections are left in both side plates.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Description
Die Erfindung betrifft eine Pumpe zur gleichzeitigen Erzeugung von Druck und Unterdruck.The invention relates to a pump for the simultaneous generation of Pressure and vacuum.
Derartige Pumpen sind vorteilhaft, wenn ein industrieller Prozeß gleichzeitig Druckluft und Unterdruck erfordert, da die Pumpe nur einen Antrieb benötigt. Außer dem Sauganschluß benötigt eine solche Pumpe einen gesonderten Aufladeanschluß, der mit der Atmosphäre verbunden ist, um den Volumenstrom für die Druckluft zu gewährleisten. Entsprechend müssen in der Pumpenkammer mehrere voneinander getrennte Zellen gebildet werden. Dies ist im Stand der Technik nur mit Drehschiebersystemen gelungen die beispielsweise aus des GB-A-818 691 bekannt sind. Drehschieber sind aber verschleißbehaftet und können nur bei Einsatz spezieller Werkstoffe schmiermittelfrei betrieben werden.Such pumps are advantageous when an industrial process Requires compressed air and negative pressure at the same time, since the pump only needs a drive. In addition to the suction connection requires one Pump a separate charging port that communicates with the atmosphere is connected to ensure the volume flow for the compressed air. Accordingly, several must be separated from each other in the pump chamber Cells are formed. In the prior art, this is only with rotary slide systems successful which are known for example from GB-A-818 691. But rotary valves are subject to wear and can only be lubricated if special materials are used operate.
Durch die vorliegende Erfindung wird eine Pumpe zur gleichzeitigen Erzeugung von Druckluft und Unterdruck zur Verfügung gestellt, die nahezu verschleißfrei ist und ohne den Einsatz besonderer Werkstoffe hergestellt werden kann. Bei der erfindungsgemäßen Pumpe rotieren in der Pumpenkammer zwei mindestens dreiflügelige Rotoren um parallele, gegeneinander versetzte Achsen gegenläufig und kämmen berührungslos, um mit der Umfangswandung der Pumpenkammer voneinander getrennte Zellen zu bilden. Mittels der Rotoren lassen sich in der Pumpenkammer die für die gleichzeitige Erzeugung von Druckluft und Vakuum erforderlichen Zellen voneinander abgrenzen. Da die Rotoren berührungslos miteinander und auch mit der Umfangswand der Pumpenkammer zusammenwirken, tritt im Bereich der Pumpenkammer keinerlei Verschleiß auf. Der Dichtspalt zwischen den Rotoren kann durch Optimierung ihrer Geometrie sehr klein gehalten werden; er beträgt bei praktischen Ausführungen nur Bruchteile eines Millimeters, so daß gute Druck- und Vakuumwerte gewährleistet sind. Diese Werte werden sogar mit zunehmender Betriebsdauer besser, da die sich mit der Zeit bildenden Ablagerungen zu einer Verkleinerung der Dichtspalte führen. By the present invention, a pump for simultaneous Generation of compressed air and negative pressure provided that is almost wear-free and without the use of special materials can be manufactured. In the pump according to the invention rotate in the pump chamber has two at least three-bladed rotors around parallel, axes offset against each other and combing without contact, to separate from each other with the peripheral wall of the pump chamber To form cells. By means of the rotors can be in the pump chamber those for the simultaneous generation of compressed air and vacuum differentiate required cells. Because the rotors contactless with each other and also with the peripheral wall of the Pump chamber interact, occurs in the area of the pump chamber no wear and tear. The sealing gap between the rotors can be kept very small by optimizing their geometry; he is only a fraction of a millimeter in practical versions, so that good pressure and vacuum values are guaranteed. These values become even better with increasing operating time, since the Time-forming deposits to reduce the size of the sealing gap to lead.
Eine Pumpe mit zwei dreiflügeligen Rotoren, die um parallele Achsen gegenläufig rotieren, ist an sich bereits aus der DE-A-2 422 857 bekannt. Diese Pumpe hat jedoch keinen Aufladeanschluß und eignet sich daher nicht zur gleichzeitigen Erzeugung von Druckluft und Unterdruck. A pump with two three-bladed rotors that run in opposite directions around parallel axes rotate, is already known from DE-A-2 422 857. This However, the pump has no charging connection and is therefore not suitable for simultaneous generation of compressed air and negative pressure.
Die erfindungsgemäße Pumpe ist besonders für den Einsatz im papierverarbeitenden Gewerbe geeignet, vornehmlich bei Anwendungen, die keine getrennte Bereitstellung oder Einstellung von Druckluft und Vakuum erfordern. Druckluft wird z.B. zum seitlichen Anblasen eines Papierstapels für die Unterstützung der Bogentrennung benötigt. Die pulsierende Drucklufterzeugung durch die erfindungsgemäße Pumpe erweist sich hier als zweckmäßig, da die Papierkanten durch stoßweise auftretende Druckluft leichter getrennt werden können. Unterdruck ist bei derartigen Anwendungen zum Ansaugen des obersten Papierbogens erforderlich.The pump according to the invention is particularly suitable for use in suitable for paper processing industries, mainly for applications, which do not provide or adjust compressed air separately and Require vacuum. Compressed air is e.g. to blow on one side Stacks of paper needed to support sheet separation. The pulsating compressed air generation by the pump according to the invention proves to be useful here, since the paper edges by intermittent occurring compressed air can be separated more easily. Is negative pressure in such applications for sucking the top sheet of paper required.
Bei der bevorzugten Ausführungsform der Pumpe bilden die Rotoren mit der Pumpenkammer eine mit dem Sauganschluß verbundene, durch die Drehung der Rotoren ihr Volumen vergrößernde Saugzelle sowie eine Druckzelle, die bei der Drehung der Rotoren ihr Volumen verkleinert und mit dem Druckanschluß verbunden ist. Diese Druckzelle wird aus zwei im Verlauf der Drehung der Rotoren zunächst voneinander getrennten Aufladezellen gebildet, die je einen zugeordneten Aufladeanschluß aufweisen und bei der weiteren Drehung der Rotoren miteinander zur Druckzelle vereinigt werden. Die Aufladezellen werden vor ihrer Vereinigung im wesentlichen isobar und isochor in der Pumpenkammer verschoben, d.h. die sich in den Aufladezellen befindliche Luft erfährt bei der Verschiebung der Aufladezellen im wesentlichen keine Druck- und keine Volumenänderung.In the preferred embodiment of the pump, the rotors form with the pump chamber connected to the suction port through which Rotation of the rotors and their volume increasing suction cell Pressure cell that reduces its volume when the rotors rotate and is connected to the pressure connection. This pressure cell is out two initially separated from each other in the course of the rotation of the rotors Charging cells formed, each with an associated charging port have and with the further rotation of the rotors with each other Pressure cell are combined. The charging cells are before their union essentially isobar and isochoric in the pump chamber, i.e. the air in the charging cells experiences at the displacement of the charging cells essentially no pressure and no volume change.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung einer bevorzugten Ausführungsform und aus der Zeichnung, auf die Bezug genommen wird. In der Zeichnung zeigen:
- Figur 1
- einen Längsschnitt der erfindungsgemäßen Pumpe;
- Figur 2
- eine Ansicht entlang Linie II-II in Figur 1;
- Figur 3
- eine Ansicht entlang Linie III-III in Figur 1; und
Figuren 4a bis 4h- schematische Ansichten verschiedener Rotorstellungen zur Erläuterung der Wirkungsweise.
- Figure 1
- a longitudinal section of the pump according to the invention;
- Figure 2
- a view along line II-II in Figure 1;
- Figure 3
- a view along line III-III in Figure 1; and
- Figures 4a to 4h
- schematic views of different rotor positions to explain the mode of operation.
Die einstufig ausgebildete Pumpe zur gleichzeitigen Erzeugung von
Druck und Unterdruck hat ein Gehäuse, das aus einem tragenden
Mittelteil 10, einem auf der einen Seite des Mittelteils 10
aufgesetzten Gehäusedeckel 12, einem an die andere Seite des
Mittelteils 10 angefügten Gehäusering 14 und einer an den Gehäusering
14 anschließenden Deckelplatte 16 besteht. Zwischen dem Mittelteil 10,
dem Gehäusering 14 und der Deckelplatte 16 ist eine Pumpenkammer 18
gebildet. In den einander gegenüberliegenden Wandungsteilen des
Gehäusedeckels 12 und des Mittelteils 10 sind zwei Wellen 20, 22
parallel zueinander und gegeneinander versetzt in Kugellagern fliegend
gelagert. Auf jeder Welle 20, 22 sitzt ein Ritzel 24, 26. Die Ritzel
24, 26 stehen miteinander in Kämmeingriff, so daß die Wellen 20, 22
miteinander synchron entgegengesetzt rotieren. Für den Drehantrieb ist
die untere Welle 22 aus dem Gehäusedeckel 12 herausgeführt.The single-stage pump for the simultaneous generation of
Pressure and vacuum has a housing that consists of a load-bearing
Auf den in die Pumpenkammer 14 hineinragenden freien Enden der
Wellen 20, 22 sind zwei Rotoren 30, 32 angeordnet. Da der durch die
Rotoren 30, 32 gebildete Lastangriff nicht zwischen, sondern außerhalb
der Lager liegt, ergibt sich eine fliegende Wellenlagerung. Jeder der
Rotoren 30, 32 ist justierbar an der zugehörigen Welle 20 bzw. 22
befestigt. Wie aus Figur 2 ersichtlich ist, hat jeder Rotor 30, 32
drei Flügel 30a bzw. 32a. Die Pumpenkammer 18 hat in Seitenansicht die
Form von zwei sich schneidenden Kreisen, die in Form einer "8" zusammengefügt
sind. Die Flügel 30a des Rotors 30 haben eine Form, die von
der Form der Flügel 32a des Rotors 32 verschieden ist. Die Geometrie
der Flügel 30a, 32a und der Pumpenkammer 18 ist so bestimmt, daß bei
der Drehung der Rotoren 30, 32 mehrere voneinander getrennte Zellen
gebildet werden, wie unter Bezugnahme auf die Figuren 4a bis 4h weiter
unten näher erläutert, indem die Flügel 30a, 32a berührungsfrei mit
einem Dichtspalt eines Bruchteils von 1 mm übereinander und entlang
dem Außenumfang der Pumpenkammer 18 gleiten.On the free ends protruding into the
Die Deckelplatte 16 ist mit einer Reihe von Aussparungen versehen,
die nach außen durch eine aufgesetzte Verschlußplatte 36 abgeschlossen
werden. In die Verschlußplatte 36 sind zwei Rohrstutzen 42, 44
eingeschraubt. Der obere Rohrstutzen 42 bildet den Sauganschluß und
ist mit einer Aussparung 50 der Deckelplatte 16 verbunden. Der untere
Rohrstutzen 44 bildet den Druckanschluß und ist mit einer Aussparung
52 in der Deckelplatte 16 verbunden. Zwei weitere Aussparungen 54a,
54b in der Deckelplatte 16 sind nach außen zur Atmosphäre geöffnet und
bilden Aufladeanschlüsse.The
Figur 4a zeigt die Rotoren 30, 32 in einer Drehstellung, bei der
ihre Flügel 30a, 32a mit der Wandung der Pumpenkammer 18 eine abgeschlossene,
nur mit der Aussparung 50 in Verbindung stehende, gemeinsame
Zelle 60 bilden. Diese Zelle 60 vergrößert bei der weiteren
Drehung der Rotoren 30, 32 ihr Volumen, wie in Figur 4b ersichtlich.
Es handelt sich bei dieser Zelle 60 also um eine Saugzelle.Figure 4a shows the
Figur 4c zeigt zwei voneinander getrennte Zellen 62a, 62b, die
unmittelbar nach dem in Figur 4b gezeigten Zustand entstehen, indem
die Zelle 60 in zwei Teilzellen getrennt wurde. Die dem Rotor 30
zugeordnete Zelle 62a grenzt schon an die Aussparung 54a an, und die
dem Rotor 32 zugeordnete Zelle 62b nähert sich der Aussparung 54b. In
Figur 4d sind die Zellen 62a, 62b mit den zur Atmosphäre führenden
Aussparungen 54a bzw. 54b in Verbindung und werden mit Luft aufgefüllt
und auf Umgebungsdruck aufgeladen, so daß der Luftmassenstrom erhöht
wird. Es handelt sich bei den Zellen 62a, 62b somit um Aufladezellen.
Nachdem diese Aufladezellen 62a, 62b durch den nacheilenden Flügel 30a
bzw. 32b von der zugehörigen Aussparung 54a bzw. 54b abgetrennt sind,
wie in Figur 4e gezeigt, werden die Zellen 62a, 62b isobar und isochor
verschoben, bis sie sich, wie in Figur 4f gezeigt, miteinander zu
einer Druckzelle 64 vereinigen. Bei der weiteren Drehung der Rotoren
30, 32 verkleinert die Druckzelle 64 ihr Volumen. Die in der Druckzelle
64 verdichtete Luft wird über die Aussparung 52 zum Rohrstutzen
44 ausgeschoben, wie in den Figuren 4g und 4h veranschaulicht ist.FIG. 4c shows two
Die Pumpenkammer 18 ist frei von jeglichem Schmiermittel, da die
Rotoren 30, 32 berührungsfrei arbeiten. Zur Antriebsseite hin ist die
Pumpenkammer 18 durch Dichtungen an den Wellen 20, 22 abgedichtet.The
Durch die fliegende Anordnung der Rotoren 30, 32 auf den Wellen
20, 22, die zu einer fliegenden Lagerung führt, wird der Zugang zur
Pumpenkammer erleichtert, da für einen Zugang lediglich die Deckelplatte
16 abzunehmen ist. Auch die Kühlung wird durch diese Anordnung
erleichtert. Zur Kühlung kann das Gehäuse mit Kühlrippen ausgestattet
werden, und durch ein auf der Seite des Gchäusedeckels 12 angeordnetes
Kühlgebläse wird kühlende Luft von der Deckelplatte 16 her über den
Gehäusering 14, das Mittelteil 10 und den Gehäusedeckel 12 geführt.Due to the flying arrangement of the
Zur Dämpfung der Betriebsgeräusche dient ein Resonanz-Dämpfer, der
auf die Betriebsfrequenz der Pumpe abgestimmt ist. Diese Frequenz
beträgt aufgrund der dreiflügeligen Ausbildung der Rotoren die
dreifache Drehzahl der Wellen 20, 22. Die erhöhte Betriebsfrequenz
erleichtert die Unterbringung des Resonanz-Dämpfers, da dessen Länge
entsprechend verkleinert wird.A resonance damper is used to dampen the operating noise
is matched to the operating frequency of the pump. This frequency
is due to the three-bladed design of the rotors
triple speed of the
Die beschriebene fliegende Lagerung der Rotoren ist bis zu einem Volumenstrom von etwa 300 m3/h vorteilhaft. Pumpen mit größerem Volumenstrom werden vorzugsweise mit beidseitig gelagerten Rotoren ausgebildet. In diesem Falle sind in beiden Seitenplatten Anschlüsse ausgespart.The described flying bearing arrangement of the rotors is advantageous up to a volume flow of approximately 300 m 3 / h. Pumps with a larger volume flow are preferably designed with rotors mounted on both sides. In this case, connections are left in both side plates.
Claims (10)
- Pump for simultaneously generating pressure and negative pressure, with a pump chamber (18) formed in a housing and having a suction port, a pressure port and a charging port, characterized in that there are two rotors (30, 32) in the pump chamber (18) which have at least three blades and rotate in opposite directions about parallel staggered axes, the rotors intermeshing contact-free and, together with the peripheral wall of the pump chamber (18), forming cells (60, 62a, 62b, 64) which are separate from each other.
- Pump according to Claim 1, characterized in that the rotors (30, 32), together with the pump chamber (18), form a suction cell (60) which is connected to the suction port (50) and whose volume increases by the rotation of the rotors (30, 32).
- Pump according to Claim 1 or 2, characterized in that the rotors (30, 32), together with the pump chamber (18), form a pressure cell (64) which is connected to the pressure port (52) and whose volume decreases by the rotation of the rotors (30, 32).
- Pump according to Claim 3, characterized in that the rotors (30, 32), together with the pump chamber, form two charging cells (62a, 62b) which are initially separate from each other during the rotation of the rotors and which, during the further rotation of the rotors, are united with each other to form the pressure cell (64).
- Pump according to Claim 4, characterized in that at least one charging cell (62a, 62b) comprises an associated charging port (54a, 54b).
- Pump according to Claim 4 or 5, characterized in that, before being united, the charging cells (62a, 62b) are shifted essentially isobarically and isochorically in the pump chamber (18).
- Pump according to any one of the preceding claims, characterized in that the pump chamber (18) is lubricant-free.
- Pump according to any one of the preceding claims, characterized in that the pump chamber (18) is delimited between two parallel side plates (10, 16) and recesses for the ports (50, 52, 54a, 54b) are left open in at least one of the side plates (16).
- Pump according to any one of the preceding claims, characterized in that the shafts (20, 22) are cantilevered and the rotors (30, 32) are arranged on free ends of the shafts (20, 22).
- Pump according to any one of the preceding claims, characterized in that the shafts (20, 22) are synchronized by two pinions (24, 26) which intermesh with each other and in that at least one of the rotors (30, 32) is adjustably attached to the associated shaft (20, 22).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19819538A DE19819538C2 (en) | 1998-04-30 | 1998-04-30 | Pressure suction pump |
| DE19819538 | 1998-04-30 | ||
| PCT/EP1999/002882 WO1999057439A1 (en) | 1998-04-30 | 1999-04-28 | Vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1075601A1 EP1075601A1 (en) | 2001-02-14 |
| EP1075601B1 true EP1075601B1 (en) | 2002-09-18 |
Family
ID=7866414
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99948559A Expired - Lifetime EP1076760B1 (en) | 1998-04-30 | 1999-04-28 | Rotating piston machine with three-blade rotors |
| EP99923485A Expired - Lifetime EP1075601B1 (en) | 1998-04-30 | 1999-04-28 | Vacuum pump |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99948559A Expired - Lifetime EP1076760B1 (en) | 1998-04-30 | 1999-04-28 | Rotating piston machine with three-blade rotors |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US6364642B1 (en) |
| EP (2) | EP1076760B1 (en) |
| JP (2) | JP2002513887A (en) |
| KR (2) | KR100556077B1 (en) |
| CN (2) | CN1105820C (en) |
| DE (3) | DE19819538C2 (en) |
| WO (2) | WO1999057439A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004009639A1 (en) * | 2004-02-27 | 2005-09-15 | Rietschle Thomas Gmbh + Co. Kg | Rotary gear compressor, includes control device for altering cross section of additional outlet opening between outlet chamber and work region |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20216504U1 (en) * | 2002-10-25 | 2003-03-06 | Werner Rietschle GmbH + Co. KG, 79650 Schopfheim | Displacement machine with rotors running in opposite directions |
| FR2859000B1 (en) * | 2003-08-20 | 2005-09-30 | Renault Sa | GEAR TOOTH AND EXTERNAL GEAR PUMP |
| GB0410491D0 (en) * | 2004-05-11 | 2004-06-16 | Epicam Ltd | Rotary device |
| EP1640613B1 (en) * | 2004-09-17 | 2006-11-29 | Aerzener Maschinenfabrik GmbH | Rotary piston compressor and process to use it |
| TW200848617A (en) * | 2007-06-08 | 2008-12-16 | Jaguar Prec Industry Co Ltd | Motor direct drive air pump, related applications and manufacturing methods thereof |
| JP5725660B2 (en) * | 2011-09-30 | 2015-05-27 | アネスト岩田株式会社 | Claw pump |
| EP2674570A1 (en) * | 2012-06-14 | 2013-12-18 | Bobby Boucher | Turbine having cooperating and counter-rotating rotors in a same plane |
| CN103775341B (en) * | 2012-10-15 | 2016-05-18 | 良峰塑胶机械股份有限公司 | Two jaw-type rotor pairs with the same shape |
| US9664007B2 (en) | 2013-02-08 | 2017-05-30 | Halliburton Energy Services, Inc. | Electric control multi-position ICD |
| DE102013112704B4 (en) | 2013-11-18 | 2022-01-13 | Pfeiffer Vacuum Gmbh | Housing for a roots pump |
| US9605739B2 (en) * | 2014-04-11 | 2017-03-28 | Gpouer Co., Ltd. | Power transmission system |
| JP6340556B2 (en) * | 2015-02-12 | 2018-06-13 | オリオン機械株式会社 | Biaxial rotary pump |
| JP6340557B2 (en) * | 2015-02-12 | 2018-06-13 | オリオン機械株式会社 | Biaxial rotary pump |
| JP6221140B2 (en) * | 2015-02-12 | 2017-11-01 | オリオン機械株式会社 | Biaxial rotary pump |
| RU2611117C2 (en) * | 2015-04-01 | 2017-02-21 | Евгений Михайлович Пузырёв | Rotary machine |
| DE102018203992A1 (en) | 2018-03-15 | 2019-09-19 | Gardner Denver Schopfheim Gmbh | Rotary engine |
| CN109630411B (en) * | 2018-12-06 | 2021-06-11 | 莱州市增峰石业有限公司 | Variable compression ratio supercharger, application and engine regulation and control technology |
| JP7109788B2 (en) * | 2019-10-28 | 2022-08-01 | オリオン機械株式会社 | rotary pump |
| JP6749714B1 (en) * | 2019-10-28 | 2020-09-02 | オリオン機械株式会社 | Claw pump |
| JP6845596B1 (en) * | 2020-06-24 | 2021-03-17 | オリオン機械株式会社 | Claw pump |
| CN116517826B (en) * | 2023-04-25 | 2024-03-22 | 北京通嘉宏瑞科技有限公司 | Rotor assembly and pump body structure |
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| DE564152C (en) * | 1931-11-22 | 1932-11-14 | Otto Becker Jr | Rotary piston blower, especially for paper processing machines |
| GB622873A (en) * | 1947-04-10 | 1949-05-09 | Thomas Desmond Hudson Andrews | Improvements in or relating to rotary blowers |
| US2764407A (en) | 1951-10-03 | 1956-09-25 | Roland Offsetmaschf | Device for controlling the air in machines working with suction |
| FR1147777A (en) * | 1956-04-19 | 1957-11-29 | Two rotor positive displacement turbine | |
| GB818691A (en) * | 1957-05-20 | 1959-08-19 | Lacy Hulbert & Company | Improvements in rotary air pumps |
| US2967054A (en) | 1958-05-22 | 1961-01-03 | Mergenthaler Linotype Gmbh | Vacuum and pressure control valve for printing presses |
| DE1133500B (en) | 1959-06-10 | 1962-07-19 | Polysius Gmbh | Roots blower |
| DE1287729B (en) * | 1961-10-19 | 1969-01-23 | ||
| US3182900A (en) * | 1962-11-23 | 1965-05-11 | Davey Compressor Co | Twin rotor compressor with mating external teeth |
| DE1628347A1 (en) | 1967-01-19 | 1971-06-16 | Hubrich Christoph Dipl Ing | Internal cooling of a roots blower working in the negative pressure area |
| DE1915269A1 (en) | 1969-03-26 | 1970-10-08 | Siemens Ag | Roots blower |
| US3628893A (en) * | 1970-05-04 | 1971-12-21 | Poerio Carpigiani | Liquid and air mixing gear pump |
| DE2027272C2 (en) | 1970-06-03 | 1983-11-03 | Aerzener Maschinenfabrik Gmbh, 3251 Aerzen | Rotary piston compressor |
| DE2200301A1 (en) * | 1971-02-03 | 1972-08-10 | Apaw Sa | Gear pump for the production of air-liquid mixtures, especially in soft ice cream and whipped cream machines or the like. |
| DE2422857A1 (en) * | 1974-05-10 | 1975-11-27 | Petr Terk | Rotary piston engine with contra rotating rotors - has central mountings for the rotors and ignition and operational medium delivery systems |
| NO137655C (en) * | 1974-06-14 | 1978-03-29 | Myrens Verksted As | ROTARY REPRESSION PUMP. |
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| DD209880A1 (en) | 1982-08-27 | 1984-05-23 | Halle Maschf Veb | ARRANGEMENT AND DESIGN OF CHARGE INLET OPENINGS ON A SCREW COMPRESSOR |
| JPS62157289A (en) * | 1985-12-29 | 1987-07-13 | Anretsuto:Kk | Roots blower for high vacuum |
| DE3785192D1 (en) | 1987-05-15 | 1993-05-06 | Leybold Ag | TWO-SHAFT VACUUM PUMP WITH SCHOEPFRAUM. |
| US4859158A (en) * | 1987-11-16 | 1989-08-22 | Weinbrecht John F | High ratio recirculating gas compressor |
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| DE4301907A1 (en) | 1993-01-25 | 1994-07-28 | Siemens Ag | Liquid ring machine |
-
1998
- 1998-04-30 DE DE19819538A patent/DE19819538C2/en not_active Revoked
-
1999
- 1999-04-28 US US09/673,640 patent/US6364642B1/en not_active Expired - Fee Related
- 1999-04-28 CN CN99805637A patent/CN1105820C/en not_active Expired - Fee Related
- 1999-04-28 KR KR1020007011978A patent/KR100556077B1/en not_active Expired - Fee Related
- 1999-04-28 KR KR1020007011977A patent/KR100608527B1/en not_active Expired - Fee Related
- 1999-04-28 US US09/673,641 patent/US6439865B1/en not_active Expired - Fee Related
- 1999-04-28 JP JP2000547364A patent/JP2002513887A/en not_active Ceased
- 1999-04-28 EP EP99948559A patent/EP1076760B1/en not_active Expired - Lifetime
- 1999-04-28 WO PCT/EP1999/002882 patent/WO1999057439A1/en not_active Ceased
- 1999-04-28 DE DE59906193T patent/DE59906193D1/en not_active Expired - Lifetime
- 1999-04-28 JP JP2000547347A patent/JP2002513880A/en active Pending
- 1999-04-28 WO PCT/EP1999/002881 patent/WO1999057419A1/en not_active Ceased
- 1999-04-28 EP EP99923485A patent/EP1075601B1/en not_active Expired - Lifetime
- 1999-04-28 CN CN99805636A patent/CN1128935C/en not_active Expired - Fee Related
- 1999-04-28 DE DE59902761T patent/DE59902761D1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004009639A1 (en) * | 2004-02-27 | 2005-09-15 | Rietschle Thomas Gmbh + Co. Kg | Rotary gear compressor, includes control device for altering cross section of additional outlet opening between outlet chamber and work region |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999057419A1 (en) | 1999-11-11 |
| EP1076760B1 (en) | 2003-07-02 |
| CN1105820C (en) | 2003-04-16 |
| CN1299434A (en) | 2001-06-13 |
| KR20010043093A (en) | 2001-05-25 |
| JP2002513887A (en) | 2002-05-14 |
| DE19819538A1 (en) | 1999-11-11 |
| DE59906193D1 (en) | 2003-08-07 |
| CN1299444A (en) | 2001-06-13 |
| JP2002513880A (en) | 2002-05-14 |
| WO1999057439A1 (en) | 1999-11-11 |
| EP1075601A1 (en) | 2001-02-14 |
| DE19819538C2 (en) | 2000-02-17 |
| KR100608527B1 (en) | 2006-08-09 |
| US6364642B1 (en) | 2002-04-02 |
| EP1076760A1 (en) | 2001-02-21 |
| KR100556077B1 (en) | 2006-03-07 |
| CN1128935C (en) | 2003-11-26 |
| US6439865B1 (en) | 2002-08-27 |
| DE59902761D1 (en) | 2002-10-24 |
| KR20010043094A (en) | 2001-05-25 |
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