EP3460247B1 - Procédé de fonctionnement d'une pompe périphérique comme pompe de dosage, pompe à vide ou pour échantillonnage - Google Patents

Procédé de fonctionnement d'une pompe périphérique comme pompe de dosage, pompe à vide ou pour échantillonnage Download PDF

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Publication number
EP3460247B1
EP3460247B1 EP18195434.8A EP18195434A EP3460247B1 EP 3460247 B1 EP3460247 B1 EP 3460247B1 EP 18195434 A EP18195434 A EP 18195434A EP 3460247 B1 EP3460247 B1 EP 3460247B1
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EP
European Patent Office
Prior art keywords
side channel
line
housing
pressure
impeller
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.)
Active
Application number
EP18195434.8A
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German (de)
English (en)
Other versions
EP3460247A1 (fr
Inventor
Andrej Getze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lutz Pumpen GmbH
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Lutz Pumpen GmbH
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Publication date
Application filed by Lutz Pumpen GmbH filed Critical Lutz Pumpen GmbH
Publication of EP3460247A1 publication Critical patent/EP3460247A1/fr
Application granted granted Critical
Publication of EP3460247B1 publication Critical patent/EP3460247B1/fr
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Classifications

    • 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
    • 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
    • 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 for operating several variants of a side channel pump with an impeller rotating in a housing, the impeller forming a plurality of cells which are separated from one another by vanes extending from a hub, and which eccentrically guide a side channel guided in the housing sweep, which runs from a suction line in the direction of rotation of the impeller radially around the hub to a pressure line, with a leakage area in the axial direction between the housing and the hub or radially in the counterflow direction between the suction line and pressure line and in the axial direction between the housing and the blades formed, and the housing is associated with an additional connection opening into this leakage area.
  • a conventional, in the specific case two-stage, side channel pump is also 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 for a long time. They are traditionally used for small and medium-sized flows.
  • the side channel pump has a suction line and a pressure line on a housing, which are connected to one another 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-centerly engaging in the eccentric side channel, which is offset laterally from the path of the blades.
  • an identical pressure can be generated on the pressure line as on the suction line by creating a common reservoir between the pressure line and the suction line, from which a medium is conveyed into the suction line, passes through the side channel pump and again is fed into the reservoir via the pressure line.
  • the same pressure is present on both lines, since this does not change due to the feeding in and out, and a negative pressure is established at the additional connection.
  • a vacuum is created in any other system, the solution is operated as a vacuum pump.
  • An inventive use of the side channel pump as a metering pump is possible in that, at approximately the same pressure conditions in the suction line and in the pressure line, an additional medium is introduced via the additional connection.
  • an additional medium is introduced via the additional connection.
  • a valve can also be assigned to the additional connection or an additional line connected to it, in order to control the inflow or outflow via the additional connection.
  • Figure 1 shows a side channel pump 1, which has a motor-driven, rotatably mounted impeller 2 in a housing 5.
  • the impeller 2 essentially fills the housing 5, but also passes through a side channel 6 which is guided in the housing 5 in a semicircular manner around the circumference of the impeller 2 and is arranged axially eccentrically.
  • the medium to be pumped is fed through a suction line 8 and 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 extend radially and thus form cells between them, the hub 4 and the housing 5, in which the medium is conveyed further. Due to the design of the eccentric side channel 6, however, the medium to be conveyed is moved back and forth between the cells of the impeller and the side channel 6.
  • the side channel 6 does not close around 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 merges into the pressure line 9.
  • the multi-stage effect of the side channel pump creates a high pressure compared to identical centrifugal pumps.
  • This effect which occurs in principle 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.
  • This leakage flow 7 and the pressure conditions in the housing 5 make use of the side channel pump 1.
  • An additional connection 10 is provided in the center in the area of the hub or in the area between the pressure line 9 and the suction line 8, with which the special pressure conditions within the side channel pump 1 are exploited according to the invention.
  • Figure 2 shows this additional connection 10 again in a lateral cross-sectional view, it being made clear that the leakage flow 7 occurs in the axial direction laterally next to the impeller 2 as a kind of bypass between different sections of the side channel 6.
  • a valve 13 is provided on the pressure line 9, while an additional line 14 is now led to a container 11 at the additional connection 10.
  • the side channel pump 1 is used as a metering pump in that 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 If, on the other hand, the valve 13 is closed further, so that the pressure P2 in the pressure line 9 increases, the static pressure in the side channel pump 1 also increases and an excess pressure arises at the additional connection 10. As a result, medium can then flow from the side channel pump 1 into the container 11 promoted and the arrangement is suitable for taking samples with this configuration.
  • the valve 12 serves to limit the flow, but this time the withdrawal flow from the side channel pump 1.
  • the side channel pump is converted into a vacuum pump.
  • Such a configuration can also be implemented directly in terms of construction in a fixed housing, so that a specialized vacuum pump can be implemented in which the auxiliary medium conveyed in the side channel pump 1 does not leave the overall arrangement.
  • a side channel pump is thus described above, which takes advantage 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 externally usable for different applications of such a side channel pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (7)

  1. Procédé de fonctionnement d'une pompe à canal latéral comportant un rotor (2) tournant dans un carter (5), le rotor (2) formant une pluralité de cellules, lesquelles sont séparées les unes des autres par des aubes (3) s'étendant à partir d'un moyeu (4), et s'étirent à travers un canal latéral (6) placé dans le carter (5) de façon excentrée, lequel canal s'étend d'une conduite d'aspiration (8) dans le sens de rotation du rotor (2) radialement autour du moyeu (4) jusqu'à une conduite de pression (9),
    une zone de fuite étant formée dans la direction axiale entre le carter (5) et le moyeu (4), et un raccord auxiliaire (10) débouchant dans cette zone de fuite étant affecté au carter (5) en tant que pompe doseuse,
    une vanne (13) affectée à la conduite de pression (9) étant réglée de telle sorte que la pression dans la conduite d'aspiration (P1) corresponde au moins approximativement à la pression dans la conduite de pression (P2), et que le raccord auxiliaire (10) soit relié à un récipient (11) comportant un fluide à doser par l'intermédiaire d'une conduite auxiliaire (14).
  2. Procédé de fonctionnement d'une pompe à canal latéral comportant un rotor (2) tournant dans un carter (5), le rotor (2) formant une pluralité de cellules, lesquelles sont séparées les unes des autres par des aubes (3) s'étendant à partir d'un moyeu (4), et s'étirent à travers un canal latéral (6) placé dans le carter (5) de façon excentrée, lequel canal s'étend d'une conduite d'aspiration (8) dans le sens de rotation du rotor (2) radialement autour du moyeu (4) jusqu'à une conduite de pression (9),
    une zone de fuite étant formée radialement à contre-courant entre la conduite d'aspiration (8) et la conduite de pression (9), et en direction axiale entre le carter (5) et les aubes (3), et un raccord auxiliaire (10) débouchant dans cette zone de fuite étant affecté au carter (5) en tant que pompe doseuse,
    une vanne (13) affectée à la conduite de pression (9) étant réglée de telle sorte que la pression dans la conduite d'aspiration (P1) corresponde au moins approximativement à la pression dans la conduite de pression (P2), et que le raccord auxiliaire (10) soit relié à un récipient (11) comportant un fluide à doser par l'intermédiaire d'une conduite auxiliaire (14).
  3. Procédé de fonctionnement d'une pompe à canal latéral (1) comportant un rotor (2) tournant dans un carter (5), le rotor (2) formant une pluralité de cellules, lesquelles sont séparées les unes des autres par des aubes (3) s'étendant à partir d'un moyeu (4), et s'étirent à travers un canal latéral (6) placé dans le carter (5) de façon excentrée, lequel canal s'étend d'une conduite d'aspiration (8) dans le sens de rotation du rotor (2) radialement autour du moyeu (4) jusqu'à une conduite de pression (9), une zone de fuite étant formée en direction axiale entre le carter (5) et le moyeu (4), et un raccord auxiliaire (10) débouchant dans la zone de fuite étant affecté au carter (5) pour l'échantillonnage à partir de la conduite d'aspiration,
    une vanne (13) affectée à la conduite de pression (9) étant réglée de telle sorte que la pression dans la conduite d'aspiration (P1) soit inférieure à la pression dans la conduite de pression (P2), un échantillonnage étant effectué par l'intermédiaire d'une conduite auxiliaire (14) reliée au raccord auxiliaire (10).
  4. Procédé de fonctionnement d'une pompe à canal latéral comportant un rotor (2) tournant dans un carter (5), le rotor (2) formant une pluralité de cellules, lesquelles sont séparées les unes des autres par des aubes (3) s'étendant à partir d'un moyeu (4), et s'étirent à travers un canal latéral (6) placé dans le carter (5) de façon excentrée, lequel canal s'étend d'une conduite d'aspiration (8) dans le sens de rotation du rotor (2) radialement autour du moyeu (4) jusqu'à une conduite de pression (9), une zone de fuite étant formée radialement à contre-courant entre la conduite d'aspiration (8) et la conduite de pression (9), et en direction axiale entre le carter (5) et les aubes (3), et un raccord auxiliaire (10) débouchant dans cette zone de fuite étant affecté au carter (5) pour l'échantillonnage à partir de la conduite d'aspiration,
    une vanne (13) affectée à la conduite de pression (9) étant réglée de telle sorte que la pression dans la conduite d'aspiration (P1) soit inférieure à la pression dans la conduite de pression (P2), un échantillonnage étant effectué par l'intermédiaire d'une conduite auxiliaire (14) reliée au raccord auxiliaire (10).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'entrée ou la sortie par l'intermédiaire de la conduite auxiliaire (14) pour régler le dosage et l'échantillonnage est commandée à l'aide d'une vanne (12).
  6. Procédé de fonctionnement d'un système composé d'un réservoir (15) et d'une pompe à canal latéral (1), cette dernière comportant un rotor (2) tournant dans un carter (5), le rotor (2) formant une pluralité de cellules, lesquelles sont séparées les unes des autres par des aubes (3) s'étendant à partir d'un moyeu (4), et s'étirent à travers un canal latéral (6) placé dans le carter (5) de façon excentrée, lequel canal s'étend d'une conduite d'aspiration (8) dans le sens de rotation du rotor (2) radialement autour du moyeu (4) jusqu'à une conduite de pression (9), une zone de fuite étant formée en direction axiale entre le carter (5) et le moyeu (4), et un raccord auxiliaire (10) débouchant dans cette zone de fuite étant affecté au carter (5), la conduite de pression (9) et la conduite d'aspiration (8) étant reliées au réservoir commun (15) d'un fluide transporté dans la pompe à canal latéral (1) en tant que pompe à vide,
    une conduite auxiliaire (14) sur laquelle une dépression est présente étant affectée au raccord auxiliaire (10).
  7. Procédé de fonctionnement d'un système composé d'un réservoir (15) et d'une pompe à canal latéral (1), cette dernière comportant un rotor (2) tournant dans un carter (5), le rotor (2) formant une pluralité de cellules, lesquelles sont séparées les unes des autres par des aubes (3) s'étendant à partir d'un moyeu (4), et s'étirent à travers un canal latéral (6) placé dans le carter (5) de façon excentrée, lequel canal s'étend d'une conduite d'aspiration (8) dans le sens de rotation du rotor (2) radialement autour du moyeu (4) jusqu'à une conduite de pression (9), une zone de fuite étant formée radialement à contre-courant entre la conduite d'aspiration (8) et la conduite de pression (9), et en direction axiale entre le carter (5) et les aubes (3), et un raccord auxiliaire (10) débouchant dans cette zone de fuite étant affecté au carter (5), la conduite de pression (9) et la conduite d'aspiration (8) étant reliées au réservoir commun (15) d'un fluide transporté dans la pompe à canal latéral (1) en tant que pompe à vide,
    une conduite auxiliaire (14) sur laquelle une dépression est présente étant affectée au raccord auxiliaire (10).
EP18195434.8A 2017-09-20 2018-09-19 Procédé de fonctionnement d'une pompe périphérique comme pompe de dosage, pompe à vide ou pour échantillonnage Active EP3460247B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017121777.0A DE102017121777A1 (de) 2017-09-20 2017-09-20 Modifizierte Seitenkanalpumpe sowie Verfahren zum Betrieb einer solchen

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Publication Number Publication Date
EP3460247A1 EP3460247A1 (fr) 2019-03-27
EP3460247B1 true EP3460247B1 (fr) 2020-07-15

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EP18195434.8A Active EP3460247B1 (fr) 2017-09-20 2018-09-19 Procédé de fonctionnement d'une pompe périphérique comme pompe de dosage, pompe à vide ou pour échantillonnage

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DE (1) DE102017121777A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE867933C (de) * 1941-03-09 1953-03-05 Siemens Ag Pump-Spaltdichtung
KR960001631B1 (ko) * 1991-05-14 1996-02-03 미쓰비시덴키가부시키가이샤 원주류식(圓周流式) 액체펌프
JP3061451B2 (ja) * 1991-08-20 2000-07-10 株式会社ニクニ 渦流ポンプ
JPH06330888A (ja) * 1993-05-24 1994-11-29 Nikoku Kikai Kogyo Kk 渦流ポンプ
DE4415566C2 (de) 1994-05-03 1999-02-18 Sero Pumpenfabrik Gmbh Seitenkanalpumpe
JP3919508B2 (ja) * 2001-11-16 2007-05-30 株式会社ニクニ 液処理装置
ATE512307T1 (de) * 2004-10-20 2011-06-15 Waterco Ltd Pumpenzweitdichtung
DE102013108482A1 (de) * 2013-08-06 2015-02-12 Pfeiffer Vacuum Gmbh Vakuumpumpstufe
FR3030648B1 (fr) * 2014-12-19 2019-05-03 Valeo Systemes De Controle Moteur Compresseur avec systeme d’etancheite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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DE102017121777A1 (de) 2019-03-21
EP3460247A1 (fr) 2019-03-27

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