EP2646691A2 - Pompe à roue à aubes - Google Patents

Pompe à roue à aubes

Info

Publication number
EP2646691A2
EP2646691A2 EP11793400.0A EP11793400A EP2646691A2 EP 2646691 A2 EP2646691 A2 EP 2646691A2 EP 11793400 A EP11793400 A EP 11793400A EP 2646691 A2 EP2646691 A2 EP 2646691A2
Authority
EP
European Patent Office
Prior art keywords
impeller
housing
inlet
ellipse
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
EP11793400.0A
Other languages
German (de)
English (en)
Other versions
EP2646691B1 (fr
Inventor
Klemens Finsterwalder
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.)
Finsterwalder Umwelttechnik & Co KG GmbH
Original Assignee
Finsterwalder Umwelttechnik & Co KG 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 Finsterwalder Umwelttechnik & Co KG GmbH filed Critical Finsterwalder Umwelttechnik & Co KG GmbH
Publication of EP2646691A2 publication Critical patent/EP2646691A2/fr
Application granted granted Critical
Publication of EP2646691B1 publication Critical patent/EP2646691B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet

Definitions

  • the invention relates to an impeller pump with improved geometry of the inlet and outlet openings.
  • Impeller pumps use an impeller wheel with a plurality of resilient impeller blades (also called impeller blades) that rotate in a pump housing.
  • the diameter of the impeller wheel i. the length of the impeller blades is chosen such that the free end of the impeller blades bears against the inner wall of the pump housing in every position of the impeller wheel.
  • the distance between the inner wall and the axis of rotation of the impeiler wheel is reduced.
  • the impeller blades are bent (stronger) in the movement from the drain opening to the inlet opening than when moving from the inlet opening to the drain opening.
  • the volume which is conveyed from the drainage opening to the inlet opening during a rotation of the imitation wheel is smaller than the volume which is conveyed from the inlet opening to the drainage opening during a rotation of the imitation wheel. This results in a promotion of the medium to be pumped from the inlet opening to the drain opening.
  • Impeller pumps are particularly suitable for pumping contaminated (eg with food waste) liquids. Furthermore, it is advantageous that impeller pumps are self-priming due to the sealing of the impeller blades relative to the pump housing. Since the impeller blades are firmly attached to the inner wall of the pump housing to ensure this sealing, they are subject to severe wear. This is reinforced by the fact that the Impelleriamellen when they sweep the inlet opening and the drain opening, both by their elasticity and by centrifugal forces are pressed into these openings and especially against the edges. From the prior art, it has hitherto been known to provide the inlet or outlet opening with a grid or a "comb" in order to reduce this load on the impeller blades.
  • An impeller pump according to independent claim 1 comprises a housing having an inlet and a drain, each at an inlet opening and a drain opening in the housing interior of the impeller pump, in which an impeller is with a plurality of elastic impeller (for example made of rubber), go over ,
  • the shape of the inlet and / or the drain opening is designed so that the cross section of the inlet and / or the drain on the inside facing the housing substantially has the shape of an ellipse.
  • cross section should be understood to mean that the inlet or the outlet from the interior of the housing is viewed along an axis defined by the inlet or outlet. This means, for example, that an inlet, which is given by a round tube, has a circular cross-section, even if the actual shape of the inlet opening in the housing is no longer circular if it is unwound on a plane.
  • the ratio of the length of the minor axis of the ellipse to the width of the impeller filaments is less than 1: 1, preferably less than or equal to 1: 2, more preferably about 1: 3 or about 1: 4. Characterized in that the width of the inlet or outlet opening (corresponding to the minor axis of the ellipse) is smaller than the width of the impeller blades, the load on the impeller blades is reduced by deformation when they are moved over the inlet or drain opening.
  • the ratio of the length of the major axis of the ellipse to the length of the minor axis of the ellipse is less than or equal to 1: 2, preferably about 1: 3 or about 1: 4.
  • the ellipse is aligned so that the main axis extends along the direction of movement of the impeller blades.
  • the cross section of the inlet and / or the drain on the side facing away from the housing interior substantially in the shape of a circle.
  • the area of the ellipse and the area of the circle each of the inlet or the outlet differ substantially by less than 0%, more preferably they are substantially the same size.
  • the housing of the impeller pump consists of at least two parts which can be assembled substantially along a plane of division. In this case, the contact surfaces of the two parts can deviate slightly from the dividing plane, for example to form projections in one part and corresponding recesses in the other part, which facilitate the assembly of the two parts.
  • the two parts of the housing are axially symmetrical about an axis of rotation lying substantially in the plane of division, i. a rotation of a housing part by 180 ° about this axis of rotation results in the second housing part.
  • the plane of division along which the two parts are composable includes the major axis of the above ellipse, i. the dividing plane divides the inlet and the outlet including the associated inlet and outlet openings into substantially equal parts.
  • the (at least) two-part form of the pump housing makes it possible to produce the parts of the pump housing, for example by an injection molding process or a similar process. This is particularly advantageous because by changing the shape of the inlet or outlet to the housing interior, the housing can not be made in one piece by milling or casting.
  • the fin end of the impeller blades can be reinforced by a wire insert which absorbs the forces when the inlet or outlet flows over and reduces deformations of the impeller blades.
  • the transition of the inner wall of the housing from a region of maximum diameter to a region of reduced diameter substantially coincides with the minor axis of the ellipse. In this case, this transition does not occur abruptly but the distance of the housing inner wall from the axis of rotation of the impeller decreases continuously from the maximum distance at which the impeller blades are not or least bent to the minimum distance at which the impeller blades are bent the most.
  • FIG. 1 is a side view of a half of the housing of an impeller pump according to the invention
  • FIG. 2 shows a side view of an impeller wheel for an impeller pump according to the invention
  • Fig. 3 is a perspective view of the housing of an impeller pump according to the invention. 4 shows a section through an impeller pump according to the invention.
  • Fig. 5 shows a detail of Fig. 4, in which hidden edges are shown in dashed lines.
  • the housing (1) of the impeller pump has an inlet (2) and a drain (3). Inside the housing (1) an impeller wheel (4) is rotatably mounted (in the direction of arrow) about an axis (A).
  • the impeller wheel (4) has a plurality of impeller blades (5), the fin end (6) abutting against the inner wall (7) of the housing (1).
  • the interior of the housing (1) is not rotationally symmetrical about the axis (A), but is shaped so that the impeller blades (5) during movement from the inlet opening (8) to the drain opening (9) are not (or only slightly) deformed while being bent during the movement from the Abiaufö réelle (9) to the inlet opening (8) against the rotational direction of the Impellerrades (4).
  • the volume between two impeller blades (5) in the movement from the inlet opening (8) to the drain opening (9) is greater than the volume during movement from the drain opening (9) to the inlet opening (8), whereby the medium to be pumped from the Inlet opening (8) is promoted to Abiaufö Maschinen.
  • FIG. 2 an impeller (4) is shown, the impeller blades (5) are reinforced at its end (6) with a wire (10) to the deformation of the fin end (6) when passing over the inlet opening (8) and the drain opening (9) minimize.
  • Fig. 3 shows a perspective view of the housing of an inventive impulse pump.
  • the housing (1) of the impeller pump is composed of two parts (1a, 1b), which are axisymmetrical with respect to the axis R, along a dividing plane (11).
  • Protrusions (12) on a housing part (1b), which engage in corresponding recesses (13) on the other housing part (1a) and thereby facilitate the assembly of the two housing parts (1a, 1b), ensure a slight deviation of the contact surfaces between the both parts (1a, 1b) of the division plane.
  • the two housing halves (1a, 1b) are held together by a plurality of screw connections (14).
  • the interior of the housing (1) of the impeller pump according to the invention consists of a region in which the distance between the inner wall (7) and the axis of rotation of the impeller (4) is maximum (movement of the impeller blades (FIG. 5) from the inlet opening (8) to the outlet opening (9)), and an area in which this distance is reduced (movement of the impeller fins (5) from the drain opening (9) to the inlet opening (8)) to a deformation of the impeller fins (5) reach.
  • the (continuous) transition from the maximum distance region to the minimum distance region begins at the level of the semiaxis of the ellipse of the inlet opening (8) or the outlet opening (9), ie approximately in the middle of the inlet opening (8) or the outlet opening (8). 9).
  • the housing (1) shown in Fig. 3 is shown without side wall. Such can be produced separately from the two housing parts (1a, 1b) and connected to the corresponding Geotrouseteii (1a), for example by means of screwing or gluing.
  • the Gezzateii can also be made equal with side wall.
  • Clamping screws (15) on the inlet (2) and on the outlet (3) can be used to connect connection tubes to the inlet (2) or outlet (3) of the housing (1).
  • the elongated and narrow shape of the Zuiaufö réelle (8) can be seen, which leads to the fact that the impeller blades (5) of the impeller (4), not shown in Fig. 3 by the centrifugal forces due to the rotation of the impeller ( 4) and the elastic restoring forces due to the deformation of the impeller blades (5) are not pressed so much outwardly and deformed, as in impeller pumps, in which the Zuiaufötechnisch extends over the entire width of the Impeilerlameüen and thus the housing interior.
  • the drain opening (9), which can not be seen in FIG. 3, is preferably formed the same as the inlet opening (8).
  • Fig. 4 shows a section through an impeller pump according to the invention along a plane perpendicular to the axis defined by the inlet (Z).
  • the section marked by B is shown again in FIG. 5, with hidden edges being shown there by dashed lines.
  • FIG. 4 shows an embodiment of the impeller pump according to the invention, in which the housing (1) is connected to a drive unit (16) which drives the impeller wheel (4) (not shown).
  • the elliptical shape of the cross section of the inlet opening (8) can be clearly seen.
  • the major axis of the ellipse, which runs in the dividing plane (11) between the two housing parts (1a, b), in this embodiment has about three times the length of the minor axis.
  • the length of the Minor axis is about a third! the width of the inner wall (7) of the housing, that is about one third of the width of the impeller blades (5).
  • the inlet (2) and the outlet (3) have the shape of a circle on their outer ends facing away from the interior of the housing in order to form normal, round connection pipes with the inlet (2). and the start (3) easy to connect.

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 à roue à aubes comportant un carter pourvu d'un orifice d'entrée et d'un orifice de sortie, et une roue à aubes pourvue d'une pluralité d'aubes. La section transversale de l'orifice d'entrée et de l'orifice de sortie sur le côté orienté vers l'intérieur du carter est de forme elliptique afin de réduire les contraintes et les dégâts sur les aubes.
EP11793400.0A 2010-12-01 2011-12-01 Pompe à roue à aubes Active EP2646691B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010062298 DE102010062298B4 (de) 2010-12-01 2010-12-01 Impellerpumpe
PCT/EP2011/071525 WO2012072746A2 (fr) 2010-12-01 2011-12-01 Pompe à roue à aubes

Publications (2)

Publication Number Publication Date
EP2646691A2 true EP2646691A2 (fr) 2013-10-09
EP2646691B1 EP2646691B1 (fr) 2015-06-17

Family

ID=45217535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11793400.0A Active EP2646691B1 (fr) 2010-12-01 2011-12-01 Pompe à roue à aubes

Country Status (4)

Country Link
EP (1) EP2646691B1 (fr)
DE (1) DE102010062298B4 (fr)
DK (1) DK2646691T3 (fr)
WO (1) WO2012072746A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11346342B2 (en) 2017-04-10 2022-05-31 Biotrans Ag Impeller pump having different geometries of the inlet and outlet openings

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11339782B2 (en) 2020-06-26 2022-05-24 LeimbachCausey, LLC Multi-chamber impeller pump

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU30267A1 (fr) * 1949-08-19
GB770113A (en) * 1954-03-15 1957-03-13 Herbert Josef Venediger Improvements in rotary blowers or compressors
DE1236340B (de) * 1956-07-20 1967-03-09 Jabsco Pump Company Rotierende Verdraengerpumpe
FR1478699A (fr) * 1966-04-19 1967-04-28 Aubages flexibles pour pompes rotatives
US3806283A (en) * 1973-01-04 1974-04-23 Int Standard Electric Corp Pump by-pass
FR2819294A1 (fr) * 2000-12-13 2002-07-12 Gerard Goffredi Rotor/impulseur de pompe a palettes souples et interchangeables
US6394753B1 (en) * 2001-02-07 2002-05-28 Hypro Corporation Flexible impeller removal and installation method
DE202006010360U1 (de) * 2006-06-28 2006-09-21 Elektron Berlin Gmbh Impellerpumpe zum Fördern von Flüssigkeiten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012072746A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11346342B2 (en) 2017-04-10 2022-05-31 Biotrans Ag Impeller pump having different geometries of the inlet and outlet openings

Also Published As

Publication number Publication date
DE102010062298A1 (de) 2012-06-06
WO2012072746A2 (fr) 2012-06-07
EP2646691B1 (fr) 2015-06-17
DK2646691T3 (en) 2015-09-28
DE102010062298B4 (de) 2014-01-02
WO2012072746A3 (fr) 2013-06-20

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