EP1005615A1 - Pompe regenerative a plusieurs etages - Google Patents

Pompe regenerative a plusieurs etages

Info

Publication number
EP1005615A1
EP1005615A1 EP98946409A EP98946409A EP1005615A1 EP 1005615 A1 EP1005615 A1 EP 1005615A1 EP 98946409 A EP98946409 A EP 98946409A EP 98946409 A EP98946409 A EP 98946409A EP 1005615 A1 EP1005615 A1 EP 1005615A1
Authority
EP
European Patent Office
Prior art keywords
stage
side channel
channel pump
stages
pump according
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.)
Granted
Application number
EP98946409A
Other languages
German (de)
English (en)
Other versions
EP1005615B1 (fr
Inventor
Werner Rietschle
Markus Britsche
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.)
Rietschle Werner GmbH and Co KG
Werner Rietschle GmbH and Co KG
Original Assignee
Rietschle Werner GmbH and Co KG
Werner Rietschle GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rietschle Werner GmbH and Co KG, Werner Rietschle GmbH and Co KG filed Critical Rietschle Werner GmbH and Co KG
Publication of EP1005615A1 publication Critical patent/EP1005615A1/fr
Application granted granted Critical
Publication of EP1005615B1 publication Critical patent/EP1005615B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04D29/00—Details, component parts, or accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps

Definitions

  • the invention relates to a multi-stage side channel pump for
  • the impellers of several stages are usually attached to one another on a common drive shaft. Only those designs are known in which the impellers of two adjacent stages have the same geometry and size.
  • the inlet of the subsequent stages is usually directly connected to the outlet of the preceding stage within a common housing.
  • a compressor arrangement is already known from DE-GM 7 441 311, in which a plurality of impellers of different widths are arranged side by side on a common drive shaft.
  • the associated impellers should each be operated individually, connected in parallel or combined in series.
  • the invention provides a multi-stage side channel pump which has an optimized efficiency. According to the invention, this is achieved in that the geometry of each stage is adapted to the specific volume of the medium by dimensioning its impeller diameter and its flood diameter. As a result, each subsequent stage is dimensioned smaller than that overall previous stage. Since the impellers of both stages rotate at the same speed, the same pressure difference between inlet and outlet results for the subsequent stages as for the preceding stage.
  • the procedure is preferably as follows: First, the stage pressure p for each stage is based on the required final pressure and the number of stages
  • n the number of stages of the multi-stage side channel pump.
  • the impeller geometry of the next stage is then determined on the assumption of geometric similarity by the volume ratio of the preceding stage and the subsequent stages.
  • This volume ratio can be derived from the relationship for the adiabatic
  • Vj and Pj are set for volume and pressure of the first stage and V2 and I J 2 for volume and pressure of the second stage, the result is
  • both stages are preferably integrated with a common drive motor in a structural unit in which the impellers of both stages are fastened on the common drive shaft.
  • the stages are preferably strung together in a modular construction.
  • a particularly advantageous embodiment is one in which two stages are combined in one housing to form an assembly, in which the impellers are fastened on a common shaft section; the housing of one of the modules is flanged to the common drive unit and another module, in turn, to this one module, the shaft sections of the modules being coupled to one another or to the drive shaft of the drive unit by means of a coupling.
  • Another advantageous embodiment of the invention is that the inlets and outlets of the steps are led out separately. In this way, the stages can be freely combined with one another or separately from one another operate.
  • Figure 1 is an axial sectional view of a first embodiment of the multi-stage side channel pump
  • Figure 2 shows an axial section of a second embodiment of the side channel pump
  • Figure 3 shows a third embodiment of the side channel pump in axial section
  • Figure 4 is a partially sectioned side view of the side channel pump according to the third embodiment
  • Figure 5 is a plan view of a housing cover in the first embodiment of the side channel pump
  • FIG. 6 shows a radial section of the housing cover shown in FIG. 5;
  • FIG. 7 shows a plan view of the inside of the gas cap according to FIG. 5;
  • FIGS 8 to 12 different partial sections according to the section lines in Figure 5;
  • Figure 13 is a plan view of a connection plate in the first embodiment of the side channel pump
  • Figure 14 is a plan view of the inside of the
  • a drive motor 10 In the embodiment of a multi-stage side channel pump shown in FIG. 1, a drive motor 10, a first stage 12 and a second stage 14 are in one
  • a housing 16 common to the two stages 12, 14 is constructed on a base 18.
  • the impellers 20, 22 of the two stages 12, 14 are fastened on a common drive shaft 24 which is connected directly to the rotor of the drive motor 10.
  • a first housing cover 26 is screwed to the housing 16, in which the cable duct 28 of the first stage 12 is formed.
  • a second housing cover 30 is screwed to the housing 16, in which the cable channel 32 of the second stage 14 is formed.
  • the inlet and outlet of the second stage 14 are guided through channels in the housing 16 and in the first housing cover 26 to a connecting plate 34, which is described separately with reference to FIGS. 5 to 12. Furthermore, the inlet and outlet of the multi-stage side channel pump are passed through a silencer 36.
  • the two stages 12, 14 are dimensioned differently.
  • the medium In the first stage 12, the medium is compressed from the inlet to the outlet, so that the specific volume (reciprocal of the density) decreases accordingly.
  • the medium now takes up a smaller volume.
  • the second stage 14 is adapted to the reduced volume.
  • the required final pressure is first divided equally between the two stages 12, 14, so that the stage pressure of the two stages is the same.
  • the volume ratio of the two stages 12, 14 is then derived from the relationship for the adiabates, as described at the beginning. With the resulting volume ratio is then below the
  • the impeller geometry of the second stage is calculated.
  • the outer impeller diameter D and the flood diameter d (FIG. 1) determining.
  • the dimensioning of the stages of the side channel pump according to the invention optimizes their efficiency because the size of each impeller is adapted to the volume of the medium.
  • the inlet 12a and the outlet 12b of the first stage and the inlet 14a and the outlet 14b of the second stage are led out on a connecting surface 40 on the underside of the housing cover 26.
  • the inlet 14a is directly connected to the outlet 12b via a channel 42.
  • a connecting plate 44 shown in FIGS. 13 to 19 is placed on the connecting surface 40.
  • This terminal plate 44 is provided with an inlet 44a and an outlet 44b.
  • a part 42a of the channel 42 is formed in the connection plate 44.
  • connection plate 44 Since in the described embodiment the inlets and outlets are led out separately on the connection surface, the two stages 12, 14 can be combined with one another in the desired manner by designing the connection plate 44.
  • the two stages 12, 14 in the housing 16 with the housing covers 26, 30 and the impellers 20, 22 are combined to form a structural unit on a common shaft section 50.
  • the housing cover 26 is designed as a flange on its surface facing the drive motor 10 and can be screwed to the drive motor 10 with a correspondingly designed connecting flange.
  • the shaft section 50 is connected directly to the rotor of the drive motor 10 via a coupling 52.
  • a fan 54 is connected to the end of the shaft section 50 facing away from the drive motor 10.
  • the housing cover 30 is also formed with a connecting flange. This is the one shown in FIG.
  • Embodiment attached a housing part 56 which is part of the load-bearing structure of the side channel pump.
  • two structural units A, B of the type described in more detail with reference to FIG. 2 are provided, each with two stages, the structural unit A being flanged to the drive motor 10 and the structural unit B being flanged to the structural unit A; the shaft section 50a is connected to the drive motor 10 by a coupling 52a and the shaft section 50b is connected to the shaft section 50a by a coupling 52b.
  • the impeller geometry is adapted to the specific volume of the medium in each stage, as was described in detail above with reference to FIG. 1.
  • each stage In the embodiment shown in Figures 3 and 4, the inlets and outlets of each stage are separately led out to the side.
  • the inlet and outlet of each stage are accessible from a side pad 58a, 58b, 58c and 58d, respectively.
  • a connection plate is placed on each of these connection surfaces 58a to 58d; in Figure 4 are two of these
  • Terminal plates 60a and 60b shown cut.
  • the stages can be combined with one another in a variety of ways, if appropriate also operated independently of one another.

Landscapes

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

Abstract

L'invention concerne une pompe régénérative à plusieurs étages dont on optimise le rendement en adaptant, par dimensionnement du diamètre de roue mobile (D) et du diamètre de remplissage (d) de chaque étage consécutif (14), la géométrie de cet étage au volume spécifique du milieu, au niveau de l'évacuation de l'étage précédent (12). La pression est identique pour les deux étages (12, 14). La géométrie de roue mobile de l'étage consécutif (14) est déterminée, en supposant une similitude géométrique, par le rapport volumétrique de l'étage précédent (12) et de l'étage consécutif (14).
EP98946409A 1997-08-22 1998-08-21 Pompe regenerative a plusieurs etages Expired - Lifetime EP1005615B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19736678A DE19736678A1 (de) 1997-08-22 1997-08-22 Mehrstufige Seitenkanalpumpe
DE19736678 1997-08-22
PCT/EP1998/005338 WO1999010656A1 (fr) 1997-08-22 1998-08-21 Pompe regenerative a plusieurs etages

Publications (2)

Publication Number Publication Date
EP1005615A1 true EP1005615A1 (fr) 2000-06-07
EP1005615B1 EP1005615B1 (fr) 2004-02-25

Family

ID=7839917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98946409A Expired - Lifetime EP1005615B1 (fr) 1997-08-22 1998-08-21 Pompe regenerative a plusieurs etages

Country Status (8)

Country Link
US (1) US6394748B1 (fr)
EP (1) EP1005615B1 (fr)
JP (1) JP2001514361A (fr)
KR (1) KR100594410B1 (fr)
CN (1) CN100520079C (fr)
AU (1) AU739307B2 (fr)
DE (2) DE19736678A1 (fr)
WO (1) WO1999010656A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913950A1 (de) * 1999-03-26 2000-09-28 Rietschle Werner Gmbh & Co Kg Seitenkanalverdichter
KR100459612B1 (ko) * 2001-10-09 2004-12-03 지영배 다단 강자흡식 폄프
EP1624191B1 (fr) * 2004-08-02 2007-01-03 F.P.Z. Effepizeta Srl Ventilateur à canal latéral
JP4671844B2 (ja) * 2005-05-27 2011-04-20 株式会社日立産機システム ブロワ
FR2934879B1 (fr) * 2008-08-08 2017-03-24 Arbatax Pompe a acceleration peripherique a bruit reduit
ITMI20111910A1 (it) * 2011-10-24 2013-04-25 Fpz S P A Macchina operatrice
DE102018219995A1 (de) * 2018-11-22 2020-05-28 Robert Bosch Gmbh Seitenkanalverdichter für ein Brennstoffzellensystem zur Förderung und/oder Verdichtung von einem gasförmigen Medium
DE102018220007A1 (de) * 2018-11-22 2020-05-28 Robert Bosch Gmbh Seitenkanalverdichter für ein Brennstoffzellensystem zur Förderung und/oder Verdichtung von einem gasförmigen Medium

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE733758C (de) * 1939-12-19 1943-04-01 Siemens Ag Umlaufpumpe fuer Gasfoerderung
DE868956C (de) 1944-01-08 1953-03-02 Siemens Ag Ringverdichter fuer Einbau in Rohre od. dgl.
US3385225A (en) * 1965-06-29 1968-05-28 Siemen & Hinsch Gmbh Rotary pump
US3324799A (en) * 1965-08-05 1967-06-13 Trw Inc Radial staging for reentry compressor
US3518021A (en) * 1968-04-04 1970-06-30 Gen Electric Thrust bearing for compressor
DE1931681A1 (de) 1969-06-21 1971-01-07 Demag Ag Hochdruck-Turboverdichter mit zusaetzlichem Seitenkanalverdichter
DE7441311U (de) 1974-12-11 1976-07-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verdichteranordnung
DE2721233C2 (de) * 1977-05-11 1979-02-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Aus mehreren Verdichterstufen bestehender Seitenkanalverdichter
US4325672A (en) 1978-12-15 1982-04-20 The Utile Engineering Company Limited Regenerative turbo machine
DE3303352A1 (de) * 1983-02-02 1984-08-02 Robert Bosch Gmbh, 7000 Stuttgart Aggregat zum foerdern von kraftstoff, vorzugsweise aus einem vorratstank zur brennkraftmaschine, insbesondere eines kraftfahrzeuges
JPS61142391A (ja) 1984-12-14 1986-06-30 Hitachi Ltd 多段渦流ポンプ
IT1218076B (it) 1988-06-15 1990-04-12 Fimac Spa Pompa per impianti frigoriferi,in particolare per impieghi aeronautici
US5147179A (en) * 1989-12-08 1992-09-15 Bransch Edward J Turbine pump with multistage venting of lubricating fluid flow
CN1018943B (zh) * 1991-04-05 1992-11-04 山西省通利水泵技工贸联合服务部 单吸对置式多级离心式潜水泵
DE4128150A1 (de) * 1991-08-24 1993-02-25 Duerr Dental Gmbh Co Kg Saugmaschine, insbesondere fuer dentalen einsatz
DE9215231U1 (de) * 1992-11-09 1994-03-10 Siemens Ag Verdichteraggregat
CN2252256Y (zh) * 1995-09-14 1997-04-16 沈阳市新科达石化高压泵厂 分段式多级泵

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9910656A1 *

Also Published As

Publication number Publication date
JP2001514361A (ja) 2001-09-11
AU9345898A (en) 1999-03-16
DE59810855D1 (de) 2004-04-01
EP1005615B1 (fr) 2004-02-25
KR100594410B1 (ko) 2006-07-03
CN100520079C (zh) 2009-07-29
KR20010023129A (ko) 2001-03-26
US6394748B1 (en) 2002-05-28
DE19736678A1 (de) 1999-02-25
CN1268208A (zh) 2000-09-27
AU739307B2 (en) 2001-10-11
WO1999010656A1 (fr) 1999-03-04

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