EP3460247A1 - Modified side channel pump and method for operating such a device - Google Patents
Modified side channel pump and method for operating such a device Download PDFInfo
- Publication number
- EP3460247A1 EP3460247A1 EP18195434.8A EP18195434A EP3460247A1 EP 3460247 A1 EP3460247 A1 EP 3460247A1 EP 18195434 A EP18195434 A EP 18195434A EP 3460247 A1 EP3460247 A1 EP 3460247A1
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- Prior art keywords
- side channel
- pressure
- line
- impeller
- pump
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- 238000000034 method Methods 0.000 title claims description 11
- 238000005070 sampling Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
- F04D5/007—Details of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0027—Varying behaviour or the very pump
- F04D15/005—Varying behaviour or the very pump the pumps being of the circumferential flow type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
Definitions
- the present invention relates to various variants of a side channel pump having an impeller rotating in a housing, the impeller forming a plurality of cells separated by blades extending from a hub, which eccentrically sweep a side channel guided in the housing a suction line in the direction of rotation of the impeller extends radially around the hub up to a pressure line, and various methods for operating such a side channel pump.
- a conventional, in the specific case two-stage, side channel pump is approximately from the DE 44 15 566 C2 previously known.
- the principle of the side channel pump developed at the beginning of the twentieth century from the water ring pump and has been known so far for a long time. Their field of application is traditionally the smaller and medium flow rates.
- the side channel pump has on a housing to a suction line and a pressure line, which are connected to each other via the side channel.
- the side channel runs radially about a three-quarter turn around the hub of an impeller, the blades of the impeller off-center in the opposite to the path of the blades laterally offset, so engage eccentric side channel.
- the present invention is based on the object to modify the side channel pump so that it can be used in other areas as well as pure conveying purposes in smaller and medium media flows meaningful.
- This object is achieved by a side channel pump according to the features of claim 1, and the independent claim 2.
- a useful embodiment of such side channel pumps can be found in the dependent claim 3.
- this object solves a method for operating a side channel pump according to the features of the method claims 4 or 5, which in turn are further developed by the dependent claim 6.
- this object also solves a method for operating a side channel pump according to the features of the further independent method claim. 7
- a conventional side channel pump having an impeller and an eccentric side channel, which in turn extends from a suction line in the direction of flow to a pressure line. While the side channel around the impeller rotates once well over three quarters, occur axially adjacent to the impeller leakage flows at locations where the medium is not taken along itself. These run laterally along the hub of the impeller, as well as in the short area in the direction of rotation of the impeller after the pressure line and in front of the suction line.
- the invention makes use of these leakage currents.
- a negative pressure or an overpressure This can be made available via an additional connection, which is arranged in this leakage area.
- an identical pressure on the pressure line as on the suction line can be generated by applying a common reservoir between the pressure line and the suction line from which a medium is fed into the suction line, the side channel pump passes through and again is conveyed via the pressure line into the reservoir.
- the same pressure is applied to both lines, since this does not change as a result of the infeed and outfeed, and a negative pressure is established at the additional connection.
- a negative pressure can be applied in any other system, the solution can be operated as a vacuum pump.
- a use of the invention modified side channel pump as a metering pump is possible that at about the same pressure conditions in the Suction line and in the pressure line an additional medium via the additional connection is brought.
- By precisely setting the pressure conditions via a valve on the pressure line it is possible to set how much of the additional medium is introduced into the interior of the modified side channel pump, so that an exact metering is possible.
- the valve on the pressure line continues to be closed, the pressure in the pressure line rises and an imbalance arises.
- the pressure in the side channel pump increases, the additional connection can now be used to sample the subsidized medium by depending on the valve position at the pressure line exits a smaller or larger amount of the pumped medium.
- a valve can also be assigned to the additional connection or an additional line connected thereto in order to control the inflow or outflow via the additional connection.
- FIG. 1 shows a modified according to the invention side channel pump 1, which in a housing 5 has a motor-driven, rotatably received impeller 2.
- the impeller 2 substantially fills the housing 5, but also passes through a side channel 6 which is guided around the circumference of the impeller 2 in a semicircular manner in the housing 5 and is arranged eccentrically in the axial direction.
- the medium to be delivered is introduced via a suction line 8 and guided around the impeller to a pressure line 9.
- the impeller 2 rotates about an axis of rotation and has a hub 4, from which blades 3 radially forterumblen and thus form between them, the hub 4 and the housing 5 cells in which the medium is further promoted.
- the side channel 6 does not close here to the full circumference of the impeller, but is interrupted in the direction of rotation of the impeller between the pressure line 9 and suction line 8. At this point, the side channel 6 goes over into the pressure line 9. Due to the multi-stage effect of the side channel pump creates a high pressure compared to identical centrifugal pumps.
- This effect which principally occurs in side channel pumps 1, is accompanied by a leakage flow 7, in which the medium is guided past the hub 4, because there is a certain distance in the axial direction between the impeller and the wall of the housing 5.
- an additional connection 10 is provided, with which the particular pressure conditions within the side channel pump 1 can be utilized.
- FIG. 2 shows this additional connection 10 again in a lateral cross-sectional view, which illustrates that the leakage flow 7 occurs in the axial direction laterally adjacent to the impeller 2 as a kind of bypass between different sections of the side channel 6.
- the modified side channel pump 1 can be used as a metering pump by the pressure P1 in the suction line 8 is set approximately equal to the pressure P2 in the pressure line, which can be done via the valve 13.
- the pressure P1 in the suction line 8 is set approximately equal to the pressure P2 in the pressure line, which can be done via the valve 13.
- a valve 12 can also serve to limit the metering.
- valve 13 is closed further, so that the pressure P2 in the pressure line 9 rises, so does the static pressure in the side channel pump 1 and there is an overpressure on the additional connection 10.
- the valve 12 is used to limit the flow, but this time the extraction flow from the side channel pump 1 out.
- the modified side channel pump can be converted into a vacuum pump.
- Such a configuration can also be implemented directly in the same building unit in a solid housing, so that a specialized vacuum pump can be realized in which the auxiliary medium conveyed in the side channel pump 1 does not leave the overall arrangement.
- modified side channel pump which makes use of the effects occurring in the side channel pump and realizes an additional connection in order to make the pressure conditions occurring in the side channel pump outwards usable for different applications of such a modified side channel pump.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Aufgrund der Funktionsweise der Seitenkanalpumpe entsteht im Betrieb zwischen einem Laufrad und einer die Seitenkanalpumpe umgebenden Gehäusewand eine Leckageströmung, bei der das geförderte Medium nicht wie vorgesehen entlang des Seitenkanals um die Nabe des Laufrads herum von einer Saugseite zu einer Druckseite geführt wird, sondern entweder als Kurzschlussströmung gegen die Drehrichtung des Laufrads oder aber seitlich an der Nabe vorbei geführt wird. Die Erfindung macht sich diesen Leckagebereich zunutze und sieht an einer ansonsten herkömmlichen Seitenkanalpumpe in Axialrichtung zwischen dem Gehäuse einen in diesen Leckagebereich mündenden Zusatzanschluss vor. Je nach Betriebspunkt und Betriebsmodus kann dieser Zusatzanschluss nun verwendet werden, um die solchermaßen modifizierte Seitenkanalpumpe als Dosierpumpe oder als Vakuumpumpe einzusetzen.Due to the mode of operation of the side channel pump, a leakage flow occurs during operation between an impeller and a housing wall surrounding the side channel pump, in which the conveyed medium is not routed as intended along the side channel around the hub of the impeller from a suction side to a pressure side, but either as a short circuit flow is guided against the direction of rotation of the impeller or laterally past the hub. The invention makes use of this leakage area and provides for an otherwise conventional side channel pump in the axial direction between the housing an opening into this leakage area additional connection. Depending on the operating point and operating mode, this additional connection can now be used to use the thus modified side channel pump as a metering pump or as a vacuum pump.
Description
Die vorliegende Erfindung betrifft verschiedene Varianten einer Seitenkanalpumpe mit einem in einem Gehäuse rotierenden Laufrad, wobei das Laufrad eine Mehrzahl von Zellen ausbildet, welche durch sich von einer Nabe forterstreckende Schaufeln voneinander getrennt sind, und welche einen in dem Gehäuse geführten Seitenkanal außermittig überstreichen, welcher von einer Saugleitung in Rotationsrichtung des Laufrads radial um die Nabe herum bis zu einer Druckleitung verläuft, sowie verschiedene Verfahren zum Betrieb einer solchen Seitenkanalpumpe.The present invention relates to various variants of a side channel pump having an impeller rotating in a housing, the impeller forming a plurality of cells separated by blades extending from a hub, which eccentrically sweep a side channel guided in the housing a suction line in the direction of rotation of the impeller extends radially around the hub up to a pressure line, and various methods for operating such a side channel pump.
Eine herkömmliche, im konkreten Fall zweistufige, Seitenkanalpumpe ist etwa aus der
Die Seitenkanalpumpe weist an einem Gehäuse eine Saugleitung und eine Druckleitung auf, welche über den Seitenkanal miteinander verbunden sind. Der Seitenkanal läuft radial etwa eine dreiviertel Umdrehung um die Nabe eines Laufrads herum, wobei die Schaufeln des Laufrads außermittig in den gegenüber dem Laufweg der Schaufeln seitlich versetzten, also exzentrischen Seitenkanal eingreifen.The side channel pump has on a housing to a suction line and a pressure line, which are connected to each other via the side channel. The side channel runs radially about a three-quarter turn around the hub of an impeller, the blades of the impeller off-center in the opposite to the path of the blades laterally offset, so engage eccentric side channel.
In dem Seitenkanal bildet sich während des Betriebs der Seitenkanalpumpe aufgrund von Zentrifugalkräften ein für die Saugwirkung der Pumpe wesentlicher umlaufender Flüssigkeitsring. Soweit das Medium auch Gas aufweist, sammelt sich dieses im Inneren der Zellen des Laufrads, nahe der Nabe.In the side channel is formed during operation of the side channel pump due to centrifugal forces for the suction of the pump substantially circumferential liquid ring. As far as the medium also has gas, this accumulates inside the cells of the impeller, near the hub.
Im Rahmen der Forschung an den bekannten Seitenkanalpumpen hat sich gezeigt, dass sie sich durch Modifikationen auch für andere Einsatzzwecke in besonderem Maße eignen. So liegt der vorliegenden Erfindung die Aufgabe zu Grunde, die Seitenkanalpumpe so zu modifizieren, dass sie auch auf anderen Gebieten als zu reinen Förderzwecken bei kleineren und mittleren Medienströmen sinnvoll eingesetzt werden kann.Research on the known side channel pumps has shown that they are particularly suitable for other purposes by modifications. Thus, the present invention is based on the object to modify the side channel pump so that it can be used in other areas as well as pure conveying purposes in smaller and medium media flows meaningful.
Gelöst wird diese Aufgabe durch eine Seitenkanalpumpe gemäß den Merkmalen des Anspruchs 1, sowie des nebengeordneten Anspruchs 2. Eine sinnvolle Ausgestaltung solcher Seitenkanalpumpen kann dem Unteranspruch 3 entnommen werden. Ferner löst diese Aufgabe ein Verfahren zum Betrieb einer Seitenkanalpumpe gemäß den Merkmalen der Verfahrensansprüche 4 oder 5, die wiederum ihrerseits durch den Unteranspruch 6 weitergebildet werden. Schließlich löst diese Aufgabe auch ein Verfahren zum Betrieb einer Seitenkanalpumpe gemäß den Merkmalen des weiter nebengeordneten Verfahrensanspruchs 7.This object is achieved by a side channel pump according to the features of
Erfindungsgemäß ist vorgesehen, zunächst von einer herkömmlichen Seitenkanalpumpe auszugehen, welche ein Laufrad und einen exzentrischen Seitenkanal aufweist, der wiederum von einer Saugleitung in Stromrichtung hin zu einer Druckleitung verläuft. Während der Seitenkanal das Laufrad einmal zu gut drei Vierteln umläuft, treten axial benachbart zu dem Laufrad Leckageströme an Stellen auf, an denen das Medium an sich nicht entlanggeführt wird. Diese verlaufen seitlich entlang der Nabe des Laufrads, sowie in dem kurzen Bereich in Drehrichtung des Laufrads nach der Druckleitung und vor der Saugleitung. Die Erfindung macht sich diese Leckageströme zu Nutze. Je nach eingestelltem Betriebspunkt entsteht in dem beschriebenen Leckagebereich ein Unterdruck oder ein Überdruck. Dieser kann über einen Zusatzanschluss verfügbar gemacht werden, welcher in diesem Leckagebereich angeordnet wird.According to the invention, initially starting from a conventional side channel pump having an impeller and an eccentric side channel, which in turn extends from a suction line in the direction of flow to a pressure line. While the side channel around the impeller rotates once well over three quarters, occur axially adjacent to the impeller leakage flows at locations where the medium is not taken along itself. These run laterally along the hub of the impeller, as well as in the short area in the direction of rotation of the impeller after the pressure line and in front of the suction line. The invention makes use of these leakage currents. Depending on the set Operating point arises in the described leakage area, a negative pressure or an overpressure. This can be made available via an additional connection, which is arranged in this leakage area.
Der Gesamtdruck Pt ist gemäß der Gleichung von Bernoulli eine Summe aus dynamischem und statischem Druck:
Im ungedrosselten Zustand des Systems, wenn also der Gesamtdruck an der Saugleitung gleich dem Gesamtdruck an der Druckleitung ist, sinkt der statische Druck unter den Umgebungsdruck und an dem Zusatzanschluss tritt eine Saugwirkung auf. Bei einer Drosselung der Seitenkanalpumpe erhöht sich der Gesamtdruck und damit auch der statische Druck. Wenn der statische Druck den Umgebungsdruck übersteigt, wird Medium über den Zusatzanschluss nach außen gedrückt und kann auf diese Weise entnommen werden.In the unthrottled state of the system, so if the total pressure at the suction line is equal to the total pressure at the pressure line, the static pressure drops below the ambient pressure and at the additional connection, a suction occurs. When throttling the side channel pump, the total pressure and thus also the static pressure increases. When the static pressure exceeds the ambient pressure, medium is forced out through the auxiliary port and can be removed in this way.
In einer speziellen Anpassung kann zur Erzeugung eines Vakuums ein identischer Druck auf der Druckleitung wie auf der Saugleitung erzeugt werden, indem zwischen der Druckleitung und der Saugleitung ein gemeinsames Reservoir angelegt wird, aus welchem ein Medium in die Saugleitung gefördert wird, die Seitenkanalpumpe durchläuft und wieder über die Druckleitung in das Reservoir eingefördert wird. Hierdurch liegt an beiden Leitungen der gleiche Druck an, da sich dieser durch das Ein- und Ausfördern nicht verändert, und an dem Zusatzanschluss stellt sich ein Unterdruck ein. Durch den Anschluss einer Zusatzleitung an den Zusatzanschluss kann ein Unterdruck in einem beliebigen anderen System angelegt werden, die Lösung kann als Vakuumpumpe betrieben werden.In a special adaptation, to generate a vacuum, an identical pressure on the pressure line as on the suction line can be generated by applying a common reservoir between the pressure line and the suction line from which a medium is fed into the suction line, the side channel pump passes through and again is conveyed via the pressure line into the reservoir. As a result, the same pressure is applied to both lines, since this does not change as a result of the infeed and outfeed, and a negative pressure is established at the additional connection. By connecting an additional line to the auxiliary connection, a negative pressure can be applied in any other system, the solution can be operated as a vacuum pump.
Ein Einsatz der erfindungsgemäß modifizierten Seitenkanalpumpe als Dosierpumpe ist dadurch möglich, dass bei etwa gleichen Druckverhältnissen in der Saugleitung und in der Druckleitung ein zusätzliches Medium über den Zusatzanschluss herangeführt wird. Durch ein exaktes Einstellen der Druckverhältnisse über ein Ventil an der Druckleitung kann eingestellt werden, wieviel des zusätzlichen Mediums in das Innere der modifizierten Seitenkanalpumpe eingeleitet werden, so dass eine exakte Zudosierung möglich ist.A use of the invention modified side channel pump as a metering pump is possible that at about the same pressure conditions in the Suction line and in the pressure line an additional medium via the additional connection is brought. By precisely setting the pressure conditions via a valve on the pressure line, it is possible to set how much of the additional medium is introduced into the interior of the modified side channel pump, so that an exact metering is possible.
Wird bei einer solchen Konfiguration das Ventil an der Druckleitung weiter geschlossen, so steigt der Druck in der Druckleitung an und es stellt sich ein Ungleichgewicht ein. Da hierdurch der Druck in der Seitenkanalpumpe ansteigt, kann der Zusatzanschluss nun zur Probenentnahme des geförderten Mediums eingesetzt werden, indem je nach Ventilstellung an der Druckleitung eine kleinere oder größere Menge des geförderten Mediums austritt.If, in such a configuration, the valve on the pressure line continues to be closed, the pressure in the pressure line rises and an imbalance arises. As a result, the pressure in the side channel pump increases, the additional connection can now be used to sample the subsidized medium by depending on the valve position at the pressure line exits a smaller or larger amount of the pumped medium.
In Weiterbildung dieser beiden vorbeschriebenen Verfahrensausprägungen kann auch dem Zusatzanschluss bzw. einer daran angeschlossenen Zusatzleitung ein Ventil zugeordnet sein, um den Zu- oder Abstrom über den Zusatzanschluss zu steuern.In a further development of these two methods described above, a valve can also be assigned to the additional connection or an additional line connected thereto in order to control the inflow or outflow via the additional connection.
Die vorstehend beschriebene Erfindung wird im Folgenden anhand eines Ausführungsbeispiels näher erläutert.The invention described above will be explained in more detail below with reference to an embodiment.
Es zeigen
Figur 1- eine erfindungsgemäß modifizierte Seitenkanalpumpe in einer Querschnittsdarstellung quer zur Rotationsachse des Laufrads,
Figur 2- die modifizierte Seitenkanalpumpe gemäß
in einer Querschnittsdarstellung längs der Rotationsachse des Laufrads,Figur 1 Figur 3- die Verwendung einer erfindungsgemäß modifizierten Seitenkanalpumpe als Dosierpumpe oder zu Probeentnahmezwecken in einem Prinzipschaltbild, sowie
Figur 4- die Verwendung einer erfindungsgemäß modifizierten Seitenkanalpumpe als Vakuumpumpe in einem Prinzipschaltbild.
- FIG. 1
- an inventively modified side channel pump in a cross-sectional view transverse to the axis of rotation of the impeller,
- FIG. 2
- the modified side channel pump according to
FIG. 1 in a cross-sectional view along the axis of rotation of the impeller, - FIG. 3
- the use of a modified side channel pump according to the invention as a metering pump or for sampling purposes in a block diagram, and
- FIG. 4
- the use of a modified side channel pump according to the invention as a vacuum pump in a schematic diagram.
Das zu fördernde Medium wird über eine Saugleitung 8 herangeführt und um das Laufrad herum zu einer Druckleitung 9 geführt. Das Laufrad 2 dreht sich hierbei um eine Drehachse und weist eine Nabe 4 auf, von welcher aus sich Schaufeln 3 radial forterstrecken und damit zwischen sich, der Nabe 4 und dem Gehäuse 5 Zellen ausbilden, in denen das Medium weitergefördert wird. Durch die Ausprägung des exzentrischen Seitenkanals 6 jedoch wird das zu fördernde Medium zwischen den Zellen des Laufrads und dem Seitenkanal 6 hin und her bewegt. Der Seitenkanal 6 schließt sich hierbei nicht um den vollen Umfang des Laufrades, sondern ist in Drehrichtung des Laufrads zwischen Druckleitung 9 und Saugleitung 8 unterbrochen. An dieser Stelle geht der Seitenkanal 6 in die Druckleitung 9 über. Durch die mehrstufige Wirkung der Seitenkanalpumpe entsteht ein hoher Druck im Vergleich zu baugleichen Zentrifugalpumpen.The medium to be delivered is introduced via a
Dieser bei Seitenkanalpumpen 1 prinzipiell auftretende Effekt wird begleitet von einer Leckageströmung 7, bei der das Medium an der Nabe 4 vorbei geführt wird, weil ein gewisser Abstand in axialer Richtung zwischen dem Laufrad und der Wand des Gehäuses 5 besteht. Diese Leckageströmung 7 und die Druckverhältnisse im Gehäuse 5 macht sich die erfindungsgemäß modifizierte Seitenkanalpumpe 1 zunutze. Mittig im Bereich der Nabe oder im Bereich zwischen der Druckleitung 9 und der Saugleitung 8 ist ein Zusatzanschluss 10 vorgesehen, mit dem die besonderen Druckverhältnisse innerhalb der Seitenkanalpumpe 1 ausgenutzt werden können.This effect, which principally occurs in
Bei einem Einsatz der erfindungsgemäß modifizierten Seitenkanalpumpe 1 gemäß
Wird dagegen das Ventil 13 weiter geschlossen, so dass der Druck P2 in der Druckleitung 9 steigt, so steigt auch der statische Druck in der Seitenkanalpumpe 1 und es entsteht ein Überdruck am Zusatzanschluss 10. Im Ergebnis kann dann Medium aus der Seitenkanalpumpe 1 in den Behälter 11 ausgefördert werden und die Anordnung eignet sich bei dieser Konfiguration zur Probenentnahme. Auch hier dient das Ventil 12 zur Begrenzung des Stroms, dieses Mal jedoch des Entnahmestroms aus der Seitenkanalpumpe 1 heraus.If, on the other hand, the
In einer besonderen Ausgestaltung gemäß
Vorstehend beschrieben ist somit eine modifizierte Seitenkanalpumpe, welche sich die in der Seitenkanalpumpe auftretenden Effekte zunutze macht und einen Zusatzanschluss realisiert, um die in der Seitenkanalpumpe auftretenden Druckverhältnisse nach außen hin für unterschiedliche Anwendungen einer solchen modifizierten Seitenkanalpumpe nutzbar zu machen.Thus, described above is a modified side channel pump, which makes use of the effects occurring in the side channel pump and realizes an additional connection in order to make the pressure conditions occurring in the side channel pump outwards usable for different applications of such a modified side channel pump.
- 11
- SeitenkanalpumpeSide channel pump
- 22
- LaufradWheel
- 33
- Schaufelshovel
- 44
- Nabehub
- 55
- Gehäusecasing
- 66
- Seitenkanalside channel
- 77
- Leckageströmungleakage flow
- 88th
- Saugleitungsuction
- 99
- Druckleitungpressure line
- 1010
- ZusatzanschlussSecond line
- 1111
- Behältercontainer
- 1212
- VentilValve
- 1313
- VentilValve
- 1414
- Zusatzleitungadditional line
- 1515
- Reservoirreservoir
- P1P1
- Druck in der SaugleitungPressure in the suction line
- P2P2
- Druck in der DruckleitungPressure in the pressure line
Claims (7)
dadurch gekennzeichnet, dass in Axialrichtung zwischen dem Gehäuse (5) und der Nabe (4) ein Leckagebereich ausgebildet ist, wobei dem Gehäuse (5) ein in diesen Leckagebereich mündender Zusatzanschluss (10) zugeordnet ist.A side channel pump having an impeller (2) rotating in a housing (5), the impeller (2) forming a plurality of cells separated by blades (3) extending forwards from a hub (4) and having one in the body Casing (5) guided side channel (6) off-center, which extends from a suction line (8) in the rotational direction of the impeller (2) radially around the hub (4) around to a pressure line (9),
characterized in that in the axial direction between the housing (5) and the hub (4), a leakage area is formed, wherein the housing (5) is associated with an opening into this leakage area additional connection (10).
dadurch gekennzeichnet, dass radial in Gegenstromrichtung zwischen Saugleitung (8) und Druckleitung (9), sowie in Axialrichtung zwischen dem Gehäuse (5) und den Schaufeln (3) ein Leckagebereich ausgebildet ist, wobei dem Gehäuse (5) ein in diesen Leckagebereich mündender Zusatzanschluss (10) zugeordnet ist.A side channel pump having an impeller (2) rotating in a housing (5), the impeller (2) forming a plurality of cells separated by blades (3) extending forwards from a hub (4) and having one in the body Casing (5) guided side channel (6) off-center, which extends from a suction line (8) in the rotational direction of the impeller (2) radially around the hub (4) around to a pressure line (9),
characterized in that radially in the counterflow direction between the suction line (8) and the pressure line (9), and in the axial direction between the housing (5) and the blades (3), a leakage area is formed, wherein the housing (5) opening into this leakage area additional connection (10) is assigned.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017121777.0A DE102017121777A1 (en) | 2017-09-20 | 2017-09-20 | Modified side channel pump and method for operating such |
Publications (2)
Publication Number | Publication Date |
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EP3460247A1 true EP3460247A1 (en) | 2019-03-27 |
EP3460247B1 EP3460247B1 (en) | 2020-07-15 |
Family
ID=63642835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18195434.8A Active EP3460247B1 (en) | 2017-09-20 | 2018-09-19 | Method for operating a side channel pump as a dosing pump, a vacuum pump or for sampling |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3460247B1 (en) |
DE (1) | DE102017121777A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0544680A (en) * | 1991-08-20 | 1993-02-23 | Nikoku Kikai Kogyo Kk | Peripheral pump |
JPH06330888A (en) * | 1993-05-24 | 1994-11-29 | Nikoku Kikai Kogyo Kk | Regenerative pump |
US5375970A (en) * | 1991-05-14 | 1994-12-27 | Mitsubishi Denki Kabushiki Kaisha | Circumferential flow type liquid pump |
JP2003145139A (en) * | 2001-11-16 | 2003-05-20 | Nikuni:Kk | Liquid treatment apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE867933C (en) * | 1941-03-09 | 1953-03-05 | Siemens Ag | Pump gap seal |
DE4415566C2 (en) | 1994-05-03 | 1999-02-18 | Sero Pumpenfabrik Gmbh | Side channel pump |
US7824161B2 (en) * | 2004-10-20 | 2010-11-02 | Waterco Limited | Pump secondary seal |
DE102013108482A1 (en) * | 2013-08-06 | 2015-02-12 | Pfeiffer Vacuum Gmbh | Vacuum pump stage |
FR3030648B1 (en) * | 2014-12-19 | 2019-05-03 | Valeo Systemes De Controle Moteur | COMPRESSOR WITH SEALING SYSTEM |
-
2017
- 2017-09-20 DE DE102017121777.0A patent/DE102017121777A1/en not_active Withdrawn
-
2018
- 2018-09-19 EP EP18195434.8A patent/EP3460247B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5375970A (en) * | 1991-05-14 | 1994-12-27 | Mitsubishi Denki Kabushiki Kaisha | Circumferential flow type liquid pump |
JPH0544680A (en) * | 1991-08-20 | 1993-02-23 | Nikoku Kikai Kogyo Kk | Peripheral pump |
JPH06330888A (en) * | 1993-05-24 | 1994-11-29 | Nikoku Kikai Kogyo Kk | Regenerative pump |
JP2003145139A (en) * | 2001-11-16 | 2003-05-20 | Nikuni:Kk | Liquid treatment apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP3460247B1 (en) | 2020-07-15 |
DE102017121777A1 (en) | 2019-03-21 |
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