EP0894198B1 - Pompe tourbillonnaire - Google Patents

Pompe tourbillonnaire Download PDF

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Publication number
EP0894198B1
EP0894198B1 EP97916453A EP97916453A EP0894198B1 EP 0894198 B1 EP0894198 B1 EP 0894198B1 EP 97916453 A EP97916453 A EP 97916453A EP 97916453 A EP97916453 A EP 97916453A EP 0894198 B1 EP0894198 B1 EP 0894198B1
Authority
EP
European Patent Office
Prior art keywords
impeller
blades
peripheral pump
recesses
delivery
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
Application number
EP97916453A
Other languages
German (de)
English (en)
Other versions
EP0894198A1 (fr
Inventor
Christoph Schmidt
Thomas Werner
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0894198A1 publication Critical patent/EP0894198A1/fr
Application granted granted Critical
Publication of EP0894198B1 publication Critical patent/EP0894198B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/188—Rotors specially for 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/34—Balancing of radial or axial forces on regenerative rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/35—Reducing friction between regenerative impeller discs and casing walls

Definitions

  • the invention relates to a peripheral pump with a impeller rotating in a pump housing, which to limit a sealing gap with its end faces faces faces the pump housing at a short distance and has several depressions in this area and Pumping liquid at least one ring of blades Has.
  • peripheral pumps are often used to pump Fuel in a fuel tank of a motor vehicle used and are therefore known.
  • the impeller often points to this in the radially outer area of its A wreath of blades on each end.
  • the Blades move in the pump housing Ring channels and produce there transverse to the direction of movement circulating currents of the blades.
  • the ring channels have an inlet channel and an outlet duct. An overflow of liquid from the outlet channel to the inlet channel is through a Prevents sills that interrupt the circulation flow.
  • the depressions in the impeller are with leakage liquid filled and thus form pressure pockets of an axial plain bearing, over the sealing gap between the Impeller and the pump housing connected to the delivery chambers are.
  • the invention is based on the problem of a peripheral pump at the beginning mentioned type so that they are possible even with high axial forces low friction losses and thus a high delivery rate.
  • connection of two opposite recesses enables an exchange the liquid from one end of the impeller to the other.
  • the impeller floats on a film of liquid that Operation of the peripheral pump according to the invention a contact of the impeller reliably prevents the pump housing.
  • axially flowed through peripheral pump leakage fluid through the sealing gaps and through the Connection sucked between the wells, causing the liquid film in the sealing gaps are constantly renewed.
  • the friction losses in the peripheral pump significantly reduced and a high delivery rate ensured.
  • the depressions could be in a radially outer one as seen from the blades Be arranged area of the impeller.
  • the impeller has a high peripheral speed, which means the axial forces when the peripheral pump starts be included.
  • the peripheral pump is particularly special space-saving if the depressions according to an advantageous development of Invention seen from the blades in the radially inner region of the impeller are arranged.
  • the recesses have very good emergency running properties due to their high volume if there is a short-term absence of the liquid to be pumped, if the Wells according to another advantageous development of the invention are designed trough-shaped.
  • a peripheral pump is often used, in the front of the impeller each a ring of blades for conveying a liquid from one Inlet duct is worked up to an outlet duct and with on both sides in the area of the blades in the pump housing integrated ring channels, with blade chambers conveyor chambers located opposite each other between the blades form the blades viewed in the direction of rotation from the central region of the Rise the impeller towards the front.
  • the delivery pressure can be easily thereby increase that in the area of two opposite one another Blade chambers of the blades connect is generated to overflow the liquid and that the inlet channel with a delivery chamber and the outlet channel is connected to the other delivery chamber.
  • the peripheral pump is axially connected via a first one Flow chamber and a second flow chamber flows through each has only a single inlet channel and one single outlet duct.
  • the peripheral pump can be therefore, for example, with particularly little effort Mount in a fuel tank.
  • the impeller does not have a central web separating the production chambers, so that the peripheral pump is particularly narrow builds.
  • the peripheral pump according to the invention has a special high delivery volume since the vane chambers are not are restricted with guide elements. The friction losses within the circulation flow at a transition from the first delivery chamber into the second delivery chamber particularly small due to the connection of their production chambers held.
  • the liquid can therefore run almost without interference the circulation flow from the first delivery chamber in overflow the second production chamber, resulting in a special high delivery pressure and particularly high efficiency leads the peripheral pump according to the invention.
  • the slight disturbance of the circulation flow has an effect especially with hot liquids with a high vapor pressure advantageous from this in the event of a fault or a break in the circulation flow to form reducing the delivery pressure and cavitation damage on the Vapor-causing vapor bubbles tend.
  • shock losses when the circulation flow occurs can be kept to a minimum in the blade chambers restrict if the blades according to another advantageous Development of the invention in the direction of rotation the wheel seen at an angle of 5 to 45 ° to the Surface normals of the end faces of the impeller from that middle area of the impeller to the respective front side climb up.
  • the peripheral pump according to the invention already reaches at a low speed of the impeller high discharge pressure if the buckets according to another advantageous development of the invention in the running direction the impeller seen at an angle of 10 to 20 ° to Surface normals of the end faces of the impeller from that middle area of the impeller to the respective front side climb up.
  • a low overall depth and simple manufacturability results themselves when the connection is due to an overlap of the circular delivery chambers is formed.
  • the liquid flows particularly easily from the first Delivery chamber into the second delivery chamber when through Overlap of the production chambers created connection according to another advantageous development of the invention in the radial direction of the impeller to the outside and / or expanded inside. This also leads to a Increase in the maximum achievable delivery pressure.
  • the ratio of the speed of the liquid is normal to the direction of rotation and the average speed in Circulation direction to one another is crucial for stability the circulation flow and thus for the one with the Peripheral pump maximum delivery pressure that can be generated.
  • This Ratio is one at a given working point Peripheral pump in which the circular delivery chambers approximately half on the blade chambers and the ring channels are divided, only depending on the ratio of the average diameter of the ring of the blades to the radius of the production chambers. With such a peripheral pump becomes a high discharge pressure according to another advantageous development of the invention simply because achieved the ratio of the average diameter the rim of the blades to the radius of the delivery chamber greater than 7 and less than 99 is selected.
  • the radius or the chamfer only has to be on the blades Edges exist at which the circulation flow touched the blades. Then the blades form constructively particularly simple if the radius or the Chamfer seen on the edge in the running direction of the impeller the front of the blades in a radially outer area and on the edge of the back in a radially inner Area is arranged.
  • the interference-reducing effect of the radii or the width the chamfer essentially depends on the dimensions of the blades from. For example, large shovels need accordingly large radii or chamfers.
  • the liquid circulates according to another advantageous development the invention is particularly low-interference in the delivery chambers, if the radius or the width of the chamfer is at least 1/70 corresponds to the height of the blades.
  • the impeller is inexpensive to manufacture if it is in accordance another advantageous development of the invention is made of plastic by injection molding. Furthermore, the impeller made of plastic has a particularly low weight, which makes the peripheral pump their maximum delivery rate very quickly after a start reached.
  • Figure 1 shows a longitudinal section of an inventive Peripheral pump with a pump housing 1, in which an impeller 2 is rotatably arranged.
  • the Impeller 2 is rotationally fixed on a drive shaft in its center 7 attached.
  • the pump housing 1 has in the area of the blades 6, 6a, 6b on both sides, respectively a ring channel 8, 9.
  • the ring channels 8, 9 form together with blade chambers 10, 10a, 10b shown in FIG between the blades 6, 6a, 6b delivery chambers 11, 12, which each have a circular cross section.
  • the circulation flows are for clarification marked with arrows in FIGS. 1 and 2.
  • the delivery chambers 11, 12 are here in each case half on the blade chambers 10, 10a, 10b and Ring channels 8, 9 divided and have one another Compound 13 by intersecting its circular Cross sections is generated. Through this connection 13 can be almost swirl-free from the liquid one delivery chamber 11 into the other delivery chamber 12 overflow.
  • the impeller 2 In its radially outer area and on its end faces 3, 4, the impeller 2 is the pump housing 1 with a short distance opposite. This creates an um the impeller 2 circumferential sealing gap 14 which the delivery chambers 11, 12 seals.
  • the area of the impeller 2 is several in the end faces 3, 4 opposing depressions 15, 16 incorporated. Two opposing depressions each 15, 16 are connected to one another by a channel 17.
  • a channel 17 Through the sealing gap 14 between the impeller 2 and the Pump housing 1 gets a small amount of leakage promoting liquid to the wells 15, 16. This form the recesses 15, 16 axial sliding bearings for the impeller 2.
  • the peripheral pump When the peripheral pump is operating, it floats the impeller 2 thus frictionless on a liquid film.
  • Figure 2 shows a tangential section through the Peripheral pump according to the invention from Figure 1 along the Line II - II.
  • the pump housing 1 has an inlet duct 18 and an outlet duct 19, which are arranged on both sides of the impeller 2 Sills 20 are separated.
  • the sill 20 interrupts those generated in the delivery chambers 11, 12 Circulation flows of the liquid to be pumped.
  • the Inlet channel 18 is directly connected to the first delivery chamber 11 connected behind the sill 20. In the direction of rotation seen immediately in front of the sill 20 the second delivery chamber 12 opens into the outlet channel 19.
  • the blades 6, 6a, 6b are symmetrical in the impeller 2 arranged and rise from an axially central area of the impeller 2 to the end faces 3, 4 of the impeller 2 by an angle ⁇ .
  • the drawn angle ⁇ is here about 15 °.
  • FIG. 3 shows a tangential section of the depressions 15, 16 of the impeller 2 along the line III - III from Figure 1.
  • the depressions 15, 16 are pocket-shaped incorporated into the impeller 2 and over at its center the channel 17 interconnected.

Claims (5)

  1. Pompe régénératrice comprenant une roue (2) tournant dans un corps de pompe (1), laquelle roue est par ses côtés avant (3, 4) en face du corps de pompe (1) à une faible distance pour limiter une fente d'étanchéité (14), présente dans cette zone plusieurs renfoncements (15, 16) et a, pour refouler un liquide, au moins une couronne (5) d'aubes (6), deux renfoncements (15, 16) se trouvant en face l'un de l'autre ayant à chaque fois une liaison mutuelle (17) dans la roue (2), caractérisée en ce que les renfoncements (15, 16) présentent, en coupe tangentielle du roue (2), la forme d'une poche, la transition vers les renfoncements ne se faisant pas en gradins.
  2. Pompe régénératrice selon la revendication 1, caractérisée en ce que les renfoncements (15, 16) vus depuis les aubes (6) sont disposés dans la zone intérieure radiale du roue (2).
  3. Pompe régénératrice selon la revendication 1 ou 2, caractérisée en ce que les renfoncements (15, 16) ont la forme de cuvettes.
  4. Pompe régénératrice selon au moins l'une quelconque des revendications précédentes, caractérisée en ce que la roue (2) est fabriquée en matière synthétique par le procédé de moulage par injection.
  5. Pompe régénératrice selon au moins l'une quelconque des revendications précédentes, caractérisée en ce que la roue (2) est fabriquée en matière synthétique par le procédé de moulage par injection.
EP97916453A 1996-04-18 1997-04-08 Pompe tourbillonnaire Expired - Lifetime EP0894198B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19615323 1996-04-18
DE19615323A DE19615323A1 (de) 1996-04-18 1996-04-18 Peripheralpumpe
PCT/EP1997/001735 WO1997040275A1 (fr) 1996-04-18 1997-04-08 Pompe tourbillonnaire

Publications (2)

Publication Number Publication Date
EP0894198A1 EP0894198A1 (fr) 1999-02-03
EP0894198B1 true EP0894198B1 (fr) 2001-11-28

Family

ID=7791642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97916453A Expired - Lifetime EP0894198B1 (fr) 1996-04-18 1997-04-08 Pompe tourbillonnaire

Country Status (5)

Country Link
EP (1) EP0894198B1 (fr)
AU (1) AU2509897A (fr)
DE (2) DE19615323A1 (fr)
ES (1) ES2169373T3 (fr)
WO (1) WO1997040275A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9249806B2 (en) 2011-02-04 2016-02-02 Ti Group Automotive Systems, L.L.C. Impeller and fluid pump

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6296439B1 (en) * 1999-06-23 2001-10-02 Visteon Global Technologies, Inc. Regenerative turbine pump impeller
JP3800128B2 (ja) * 2001-07-31 2006-07-26 株式会社デンソー インペラ及びタービン式燃料ポンプ
DE102017215731A1 (de) * 2017-09-07 2019-03-07 Robert Bosch Gmbh Seitenkanalverdichter für ein Brennstoffzellensystem zur Förderung und/oder Verdichtung von einem gasförmigen Medium

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1333505A (en) * 1919-03-14 1920-03-09 Herbert J Passmore Planting attachment for cultivators
US1689579A (en) * 1921-08-24 1928-10-30 Arthur W Burks Rotary pump
US3399626A (en) * 1966-08-23 1968-09-03 Lucas Industries Ltd Liquid displacement pumps
DE3708336C2 (de) * 1987-03-14 1996-02-15 Bosch Gmbh Robert Laufrad zum Fördern eines Mediums
US4854830A (en) * 1987-05-01 1989-08-08 Aisan Kogyo Kabushiki Kaisha Motor-driven fuel pump
US4872806A (en) * 1987-05-15 1989-10-10 Aisan Kogyo Kabushiki Kaisha Centrifugal pump of vortex-flow type
DE8911302U1 (fr) * 1989-09-22 1991-01-31 Robert Bosch Gmbh, 7000 Stuttgart, De
DE4020521A1 (de) * 1990-06-28 1992-01-02 Bosch Gmbh Robert Peripheralpumpe, insbesondere zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges
US5409357A (en) * 1993-12-06 1995-04-25 Ford Motor Company Impeller for electric automotive fuel pump
DE19504079B4 (de) * 1995-02-08 2004-11-04 Robert Bosch Gmbh Strömungspumpe zum Fördern von Kraftstoff aus einem Vorratsbehälter zur Brennkraftmaschine eines Kraftfahrzeugs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9249806B2 (en) 2011-02-04 2016-02-02 Ti Group Automotive Systems, L.L.C. Impeller and fluid pump

Also Published As

Publication number Publication date
DE59705556D1 (en) 2002-01-10
WO1997040275A1 (fr) 1997-10-30
DE19615323A1 (de) 1997-10-23
ES2169373T3 (es) 2002-07-01
AU2509897A (en) 1997-11-12
EP0894198A1 (fr) 1999-02-03

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