EP0808424A1 - Pompe regenerative - Google Patents

Pompe regenerative

Info

Publication number
EP0808424A1
EP0808424A1 EP96900949A EP96900949A EP0808424A1 EP 0808424 A1 EP0808424 A1 EP 0808424A1 EP 96900949 A EP96900949 A EP 96900949A EP 96900949 A EP96900949 A EP 96900949A EP 0808424 A1 EP0808424 A1 EP 0808424A1
Authority
EP
European Patent Office
Prior art keywords
impeller
side channel
channel
medium
housing
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
EP96900949A
Other languages
German (de)
English (en)
Other versions
EP0808424B1 (fr
Inventor
Henning Mollenhauer
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.)
Sterling Fluid Systems Germany GmbH
Original Assignee
Sterling Fluid Systems Germany GmbH
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 Sterling Fluid Systems Germany GmbH filed Critical Sterling Fluid Systems Germany GmbH
Publication of EP0808424A1 publication Critical patent/EP0808424A1/fr
Application granted granted Critical
Publication of EP0808424B1 publication Critical patent/EP0808424B1/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
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/50—Inlet or outlet
    • F05B2250/503—Inlet or outlet of regenerative pumps

Definitions

  • an impeller with star-shaped vanes and open interspaces between the vanes is closely surrounded by a housing which forms axially next to the impeller a side channel open to the impeller, in which the medium is conveyed by impulse exchange with the impeller.
  • a version has prevailed in which the supply and removal of the medium takes place on one and the same side of the impeller. This means that the inlet and outlet areas are concentrated on one pump part.
  • the side channel is also arranged on the side of the impeller on which the medium is supplied and discharged. This simplifies the medium guidance because the inlet and outlet openings are directly connected to the side channel.
  • the medium For other types of pumps in which the medium is supplied and removed on different sides of the impeller (this applies in particular to multi-stage pumps), the medium must be from the feed side through the impeller to the discharge side.
  • the removal of the medium from the side channel according to the invention is also new and surprising. As you know from multi-stage pumps, it is inherently problematic to guide the medium through the impeller from the side channel to the outlet opening. It would have been advisable to guide the medium from the side channel through the impeller to the outlet opening. This is all the more true since an essential property of the side channel pumps is that they require a comparatively small amount of space and material because the housing surrounds the impeller closely around the circumference and its diameter is therefore essentially limited to the impeller diameter. The bypass duct leading radially outside of the impeller from one side to the other puts this property into question in part because it is connected to an enlargement of the housing. However, this disadvantage is offset by the advantages of the invention.
  • the special bypass channel is expediently completely separated from the housing space in the area of the impeller plane, in which the impeller rotates.
  • the invention does not want to exclude designs in which the channel is open towards the impeller but is designed such that the majority of the medium flow is not captured by the impeller during the bypass around the impeller.
  • the bypass channel should be led tangentially out of the side channel and be deflected axially outside the impeller space in order to cross over to the other side of the housing.
  • peripheral pumps it is known to arrange an outlet channel radially outside the impeller (US-A-4508492, JP-A-1177492 abstract, JP-A-1147196 abstract, JP-A-1147195 abstract, FR-A-2237073, DE-A-3844158).
  • the channel in impulse exchange with the impeller is arranged in such a way that it surrounds the impeller symmetrically on both sides and on the circumference. This inevitably means that the medium is removed radially and possibly tangentially to reduce the losses.
  • peripheral pumps also made it unlikely that the medium discharge to the area radially outside the impeller could be associated with a reduction in noise, because peripheral pumps have an even higher noise level than conventional side channel pumps.
  • FIG. 1 shows an axial section through the impeller and the housing parts enclosing it
  • FIG. 2 shows a view in the direction X of the housing part containing the inlet and outlet openings
  • FIG. 3 shows a view of the other housing part in the same
  • the housing parts 1 and 2 include an impeller space, in which the impeller 3 rotates on a shaft, not shown.
  • the side channel 4 is formed, which is open to the vanes 5 of the impeller 3.
  • Its inlet end 6 lies opposite the inlet opening 7 formed in the housing part 2, so that the medium entering through the opening 7 can reach the side channel 4 through the spaces between the wings 5.
  • the inlet opening 7 is connected to upstream suction spaces through which the medium reaches the inlet opening 7.
  • the side channel is guided tangentially outwards in the region 8, so that a bypass channel 9, 10 is created.
  • This part 9 initially lies in the housing part 1 lying axially on one side of the impeller 3.
  • the part 10 then reaches a region lying radially outside the diameter of the impeller 3. Radially outside the impeller, it leads with an axial direction component to the other side of the impeller, the end of the bypass duct 10 located in the housing part 2 forming the outlet opening 12.
  • the medium is deflected in the axial direction.
  • the parts 9 and 10 of the bypass channel are separated from the impeller space by a housing tongue 11, so that there is no further influencing of the medium flow by the impeller in this area.
  • the medium passes from the outlet opening 12 in a known manner into a pressure chamber (not shown) of the pump which, together with the outlet opening 12, forms the devices for the medium discharge mentioned in the claim.
  • the pressure chamber can also be formed in the housing part 2, which is then made correspondingly larger than the drawing shows. Or to the disk-shaped housing part 2 there is connected a further, special housing part which contains the pressure chamber and the suction chamber and which is not shown in the drawing.
  • the bypass channel can be designed as a diffuser. A deflection of the channel 9, 10 in the direction parallel to the axis is generally not necessary. Rather, the channel part 10 is expediently oriented obliquely in the circumferential and axial directions. For these reasons, the outlet opening 12 in the housing part 2 is expediently equipped with a considerably larger cross section (measured parallel to the impeller plane) than the side channel (measured in the longitudinal plane). As a rule, the outlet opening should be 1.5 to 3 times larger than the side channel cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Amplifiers (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
EP96900949A 1995-02-06 1996-01-12 Pompe regenerative Expired - Lifetime EP0808424B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29501872U 1995-02-06
DE29501872U DE29501872U1 (de) 1995-02-06 1995-02-06 Seitenkanal-Auslaßform
PCT/EP1996/000128 WO1996024771A1 (fr) 1995-02-06 1996-01-12 Pompe regenerative

Publications (2)

Publication Number Publication Date
EP0808424A1 true EP0808424A1 (fr) 1997-11-26
EP0808424B1 EP0808424B1 (fr) 1998-09-23

Family

ID=8003474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96900949A Expired - Lifetime EP0808424B1 (fr) 1995-02-06 1996-01-12 Pompe regenerative

Country Status (9)

Country Link
US (1) US5913657A (fr)
EP (1) EP0808424B1 (fr)
AT (1) ATE171518T1 (fr)
AU (1) AU695066B2 (fr)
CA (1) CA2212222C (fr)
DE (2) DE29501872U1 (fr)
FI (1) FI107832B (fr)
NO (1) NO313110B1 (fr)
WO (1) WO1996024771A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60136451D1 (de) 2000-04-17 2008-12-18 Goodrich Pump & Engine Control Kraftstoffpumpe für eine gasturbine
US6890144B2 (en) 2002-09-27 2005-05-10 Visteon Global Technologies, Inc. Low noise fuel pump design
US6984099B2 (en) * 2003-05-06 2006-01-10 Visteon Global Technologies, Inc. Fuel pump impeller
US20040258545A1 (en) * 2003-06-23 2004-12-23 Dequan Yu Fuel pump channel
US20090246039A1 (en) * 2006-01-09 2009-10-01 Grundfos Pumps Corporation Carrier assembly for a pump
US8172523B2 (en) * 2006-10-10 2012-05-08 Grudfos Pumps Corporation Multistage pump assembly having removable cartridge
US7946810B2 (en) * 2006-10-10 2011-05-24 Grundfos Pumps Corporation Multistage pump assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE739353C (de) * 1940-07-07 1943-09-22 App Und Maschinenfabrik Karl D Umlaufpumpe mit seitlichem Schleppkanal
US3558236A (en) * 1968-09-10 1971-01-26 Delavan Manufacturing Co Self-purging regenerative turbine pump
GB1475995A (en) * 1973-07-13 1977-06-10 Simms Group Res Dev Ltd Liquid pumps
US4508492A (en) * 1981-12-11 1985-04-02 Nippondenso Co., Ltd. Motor driven fuel pump
JPH01147196A (ja) * 1987-11-30 1989-06-08 Daikin Ind Ltd 渦流形ターボ機械
JPH07117069B2 (ja) * 1987-11-30 1995-12-18 ダイキン工業株式会社 渦流形ターボ機械
JPH0762478B2 (ja) * 1987-12-28 1995-07-05 愛三工業株式会社 ウエスコ型ポンプ機構
US5011369A (en) * 1987-12-28 1991-04-30 Aisan Kogyo Kabushiki Kaisha Regenerative pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9624771A1 *

Also Published As

Publication number Publication date
NO973605D0 (no) 1997-08-05
NO313110B1 (no) 2002-08-12
EP0808424B1 (fr) 1998-09-23
AU4486296A (en) 1996-08-27
WO1996024771A1 (fr) 1996-08-15
FI973139A0 (fi) 1997-07-29
FI107832B (fi) 2001-10-15
ATE171518T1 (de) 1998-10-15
DE29501872U1 (de) 1996-05-30
DE59600600D1 (de) 1998-10-29
CA2212222A1 (fr) 1996-08-15
US5913657A (en) 1999-06-22
NO973605L (no) 1997-08-05
AU695066B2 (en) 1998-08-06
FI973139A (fi) 1997-07-29
CA2212222C (fr) 2005-06-14

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