EP1024292B1 - Pompe centrifuge avec chambre de séparation de gaz - Google Patents

Pompe centrifuge avec chambre de séparation de gaz Download PDF

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Publication number
EP1024292B1
EP1024292B1 EP00100942A EP00100942A EP1024292B1 EP 1024292 B1 EP1024292 B1 EP 1024292B1 EP 00100942 A EP00100942 A EP 00100942A EP 00100942 A EP00100942 A EP 00100942A EP 1024292 B1 EP1024292 B1 EP 1024292B1
Authority
EP
European Patent Office
Prior art keywords
pipe
pump according
chamber
liquid
gas separation
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
EP00100942A
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German (de)
English (en)
Other versions
EP1024292A3 (fr
EP1024292A2 (fr
Inventor
Günter Strelow
Thibault Houery
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.)
Wilo SE
Original Assignee
Wilo AG
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Filing date
Publication date
Priority claimed from DE19920780A external-priority patent/DE19920780A1/de
Application filed by Wilo AG filed Critical Wilo AG
Publication of EP1024292A2 publication Critical patent/EP1024292A2/fr
Publication of EP1024292A3 publication Critical patent/EP1024292A3/fr
Application granted granted Critical
Publication of EP1024292B1 publication Critical patent/EP1024292B1/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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid

Definitions

  • the invention relates to a centrifugal pump with one arranged on the inlet side Gas separation chamber for separating liquid in the liquid contained gas, especially air, via a top of the chamber arranged gas outlet, the chamber outlet one to the center of the impeller is a leading tube that extends into the gas separation chamber and in one Distance from the chamber wall opposite the free pipe end ends.
  • Such a centrifugal pump is from German patent DE 31 09 918 C3 known. Because around the massive pipe reaching into the chamber relatively low flow velocity prevails, remains in the promoted Gas bubbles contained sufficient time in the upper part of the liquid Gas trap chamber to get through without being sucked through the pipe to become.
  • One across the direction of flow of the liquid being pumped around the pipe sieve surface arranged around with a multitude of small openings at which can also separate gas bubbles from the liquid, is used for Increasing the gas separation effect.
  • Opening or passages should be provided that have a larger diameter than the largest occurring in the liquid being pumped Foreign bodies to prevent blockages on the screen surface. This takes however, the gas separation performance decreases again.
  • DE 37 24 684 A1 discloses a device for separating air from a housing with an internal surface that has a variety of Has openings through which the pumped water flows and the openings the shape of a rectangle, square, triangle, rombe or one Have polygons and the area of a sieve, fabric, braid or one thin layer of a sintered metal is formed.
  • the object of the invention is a structurally simple and easy to use To create a pump of the type mentioned by the lowest possible Material use with low weight is inexpensive to manufacture and large Safety against blockages permanently increased gas separation performance allows.
  • the pump works permanently without clogging, because Foreign objects can be sucked through the free pipe end and thus not clog the much smaller openings of the tube.
  • the pipe is made of a grid, braid or sieve-shaped material is formed.
  • the tube can also be made of a filter or porous material, especially sintered material be educated.
  • the openings can be rectangular, diamond-shaped, oval or circular To have shape.
  • As particularly performance-enhancing in terms of Venting effect has been a size of the openings with a diagonal or a diameter of 0.3 to 5 millimeters, preferably 0.5 to 3 Proven millimeters.
  • the tube can be particularly simple and inexpensive Embodiment have a circular cross section.
  • the pipe cross section but can also be oval, angular, in particular square, star-shaped or bellows-shaped with a sinusoidal tube wall, what to a larger surface area of the tube and thus to an increased Bleeding effect leads.
  • the wall of the tube can preferably also have two layers or in multiple layers in several superimposed walls, each with a variety of small openings. It is special advantageous if there is a distance between the individual pipe wall layers is provided so that the liquid conveyed through the openings of both Pipe walls can flow through and gas bubbles at the Openings.
  • openings of an outer tube layer are larger than the openings of an inner tube layer. This will Rise of the smaller ones excreted on the inner tube layer Gas bubbles favored. Larger gas bubbles settle at the openings the outer tube layer.
  • the distance between the free Tube end and the opposite chamber wall is dimensioned such that the lateral surface of the pipe in a straight extension up to opposite chamber wall imaginary cylinder between 70% and 150%, preferably 100% of the cross-sectional area of the tube.
  • the deflecting means for Deflecting the liquid arranged which is at least for a portion of the Liquid in the direct path between the liquid inlet and the Pipe. This can further increase the gas separation performance become.
  • the deflecting means at least part of the Pumped liquid, preferably the entire liquid flow, or redirected several times.
  • the deflection means act as obstacles on which the flow rate is reduced in each case, so that in the Liquid gas bubbles can be better excreted.
  • the deflecting means in the liquid Redirect towards one or more chamber walls. Thereby are further redirections and speed reductions of the liquid caused, which leads to an additional degassing.
  • the deflection means extend from the the chamber wall opposite the free pipe end into the Gas separation chamber inside.
  • the liquid must be in the area of the deflecting means first around the free end or ends of the deflecting means and then through the small openings in the pipe wall or through the flow through a large pipe opening at the free pipe end.
  • the deflection means can be guided up to the chamber wall from which from the pipe extends into the gas separation chamber, or they can in end at a distance from this chamber wall.
  • the deflecting means have a have circular cross-section and at a radial distance are arranged concentrically to the pipe.
  • the Deflection means over an angle between 10 ° and 90 °.
  • the deflection means are through a coherent guide element is formed.
  • Deflection processes there are fewer Deflection processes than with several deflecting means which are separate from one another, but these redirections are larger and therefore particularly effective in terms of the intended gas excretion.
  • the guide element can preferably have a semicircular cross section have and arranged concentrically to the tube at a radial distance his.
  • at the two end edges of the guide element particularly strong deflection of the liquid conveyed inwards to the pipe out, so that a particularly large number of gas bubbles are excreted.
  • the deflection means has a plurality of Have openings through which part of the liquid can pass. Just like when passing through the openings in the pipe wall an excretion of gas bubbles contained in the liquid reached, so that the gas separation performance increased overall again can be.
  • the surfaces of the deflecting means are not smooth, but rather have a surface roughness with small projections and / or depressions.
  • the smallest gas bubbles get stuck in the rough surface and combine with each other to form larger gas bubbles, which rise more easily and are therefore easier to excrete.
  • the tube is formed by a lower, continuously closed or apertured tube area, on which an upper grid element, which is provided with a plurality of apertures, preferably a sieve or wire mesh, is arranged. At the large number of small openings in the grid element, gas bubbles can also separate from the liquid, so that the gas separation performance can be increased even further.
  • the lower tube area in cross section is formed in the form of a circular section and the grid element in essentially two straight at an angle to each other Has grid surfaces that are placed on the lower tube area.
  • a particularly simple fastening and at the same time an exact positioning of the grid element can be achieved in that the grid element is positively and / or non-positively held on the lower tube area.
  • the grating element has at its free end facing the chamber wall opposite the impeller inlet, inwardly bent edge regions at which gas bubbles also separate from the liquid.
  • the centrifugal pump shown in Figure 1 in particular for the water cycle a heating system has a pump housing 1 with a suction nozzle 2 and one arranged coaxially on the opposite side Pressure port 3, between which the pump chamber 4 is arranged.
  • a pump housing 1 In the Pump chamber 4 is an impeller 5 rotatably supported by one Electric motor shown is driven, which is flanged to the pump housing is.
  • This pipe socket 12 extends into a gas separation chamber 7, the pump housing 1 on the side opposite the electric motor is rotatably flanged.
  • the pipe socket 12 ends at a distance from the opposite housing wall 20 of the gas separation chamber 7, the corresponds approximately to half the radius of the pipe socket 12.
  • the pipe socket 12 is in the form of a sieve with a large number of small openings 13 executed that have an average diameter of 1 millimeter.
  • a housing 9 forms the gas separation chamber 7, which is at the top has a gas outlet opening 10 on which a vent valve connected.
  • the gas separation chamber 7 is annular Connection opening 8 with the pump housing 1 or with the suction port 2 connected.
  • the connection opening 8 surrounds the pipe socket 12 coaxially and forms the inlet of the chamber 7.
  • the outlet of the chamber 7 is through the Pipe socket 12 formed.
  • a preferred embodiment of the pipe socket 12 is shown in the the tube wall is formed in two tube layers 14 and 15. Between the outer tube layer 14 and the inner tube layer arranged coaxially thereto 15 a radial distance A is provided so that the liquid delivered can also flow between the two pipe layers 14 and 15. They have Openings 13a of the outer tube layer 14 have a larger diameter than that Openings 13i of the inner tube layer 15.
  • a guide element 18 as a deflecting means for deflecting the Liquid arranged in the centrifugal pump shown in Figures 3 and 4 between the Suction nozzle 2 as the liquid inlet of the gas separation chamber 7 and the - pipe socket 12 .
  • the guide element 18 has a semicircular shape Cross section and is at least approximately coaxial to the pipe socket 12 arranged.
  • the upper edges 19 of the guide element 18 are located at least approximately at the level of the axis of the pipe socket 12 and the Impeller 5.
  • the guide element 18 extends from the free end of the pipe socket 12 opposite chamber wall 20 into the gas separation chamber 7 into it. It remains between the free end of the guide element 18 and the Chamber wall 21, from which the pipe socket 12 extends, a gap 22, through which a part of the liquid is sucked.
  • the remaining portion of the liquid is in the channels 24 on both sides out between the guide element 18 and the housing wall 9. Above the upper edges 19, the partial liquid flows in the direction the pipe socket 12 deflected. With each redirection process more occur Gas bubbles come out of the liquid and rise to the top Gas outlet opening 10 or to the vent valve provided there.
  • the surfaces of the guide element 18 have a surface roughness a variety of small projections and recesses. Thereby the smallest gas bubbles connect, which hang in the rough surface stay together to form larger gas bubbles that rise more easily and can be better eliminated.
  • Pump tube 12 is continuously closed by a lower one Pipe portion 25 formed on top of which with a variety of small Openings 13 provided grid element 26 is arranged.
  • the lower Pipe area 25 has the shape of a semicircle in cross section, on which formed by a wire mesh grid element 26 non-positively and attached to it.
  • the grid element 26 consists essentially of two at an angle of approximately 100 ° to each other arranged straight grid surfaces 27, the free ends as Tabs 30 are bent inwards and the upper edges of the lower Include pipe area 25 outside.
  • the straight between the two Grid surfaces 27 located edge 28 is bent obliquely inwards in this way is that the chamber wall 21 of the pump chamber 4 facing the end of Edge 28 is offset inwards towards the axis of the impeller 5.
  • FIGS. 6 and 7 show a grid element formed by a wire mesh 26 from different views, that of FIG. 5 is similar.
  • the upper contour in FIG. 7 is the shape of the upper region the chamber wall 21 is formed accordingly, on which it rests.
  • FIG Grid element 26 also with the embodiment of Figure 3 or 4 with a Guide element 18 can be combined.
  • the previously described embodiments of the invention can also are particularly suitable for use in separate connection housings that are used as Interface between a pump and the ventilation device can be arranged can.
  • the field is a particularly suitable field of application of the invention the so-called hydro units, in which pumps of the invention Design for pumping and venting heating water and / or Process water can be used in a compact unit.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (22)

  1. Pompe centrifuge avec une chambre de séparation de gaz (7) disposée du côté entrée pour séparer des gaz, en particulier de l'air, contenus dans le liquide transporté par l'intermédiaire d'une sorite d'air disposée au-dessus sur la chambre de séparation de gaz, la sortie de liquide de la chambre de séparation de gaz étant un tube (12), conduisant au centre de la roue mobile, qui aboutit à l'intérieur de la chambre de séparation de gaz et se termine à une certaine distance de la paroi de la chambre opposée à l'extrémité libre du tube, caractérisée en ce que le tube (12) est réalisé avec une pluralité d'ouvertures (13).
  2. Pompe selon la revendication 1,
    caractérisée en ce que le tube (12) est formé par un grillage, un treillis ou un matériau en forme de tamis.
  3. Pompe selon la revendication 1,
    caractérisée en ce que le tube (12) est formé par un filtre ou un matériau poreux.
  4. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que les ouvertures (13) ont une forme rectangulaire, en forme de losange, ovale ou circulaire.
  5. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que les ouvertures (13) présentent une diagonale ou respectivement un diamètre de 0,3 à 5 millimètres, de préférence de 0,5 à 3 millimètres
  6. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que le tube (12) a une section transversale ronde, ovale, polygonale, en forme d'étoile ou de soufflet.
  7. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que le tube (12) est réalisé à plusieurs couches, en particulier à deux couches.
  8. Pompe selon la revendication 7,
    caractérisée en ce qu'un écartement (A) est prévu entre les couches (14, 15) individuelles du tube.
  9. Pompe selon la revendication 7 ou 8,
    caractérisée en ce que les ouvertures (13a) d'une couche extérieure (14) du tube sont plus grandes que les ouvertures (13i) d'une couche intérieure (15) du tube.
  10. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que la distance entre l'extrémité libre du tube (12) et la paroi (9) opposée de la chambre a une dimension telle que la surface d'enveloppe du cylindre imaginaire en prolongement rectiligne du tube (12) jusqu'à la paroi (9) opposée de la chambre est comprise entre 70% et 150 %, de préférence est égale à 100 %, de la surface de section transversale du tube (12).
  11. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que, entre l'entrée de liquide de la chambre de séparation de gaz et le tube (12), sont disposés des moyens déflecteurs (18) pour dévier le liquide qui se trouvent, pour au moins une partie du liquide, dans le trajet direct entre l'entrée de liquide et le tube (12).
  12. Pompe selon la revendication 11,
    caractérisée en ce que les moyens déflecteurs (18) dévient le liquide vers une ou plusieurs parois (20, 21) de la chambre.
  13. Pompe selon la revendication 11 ou 12,
    caractérisée en ce que les moyens déflecteurs (18) s'étendent depuis la paroi (20) de la chambre opposée à l'extrémité libre du tube jusqu'à l'intérieur de la chambre de séparation de gaz (7).
  14. Pompe selon l'une des revendications 11 à 13,
    caractérisée en ce que les moyens déflecteurs (18) présentent une section transversale en segment de cercle et sont disposés à écartement radial concentriquement au tube (12).
  15. Pompe selon l'une des revendications 11 à 14,
    caractérisée en ce que les moyens déflecteurs sont formés par un élément de guidage (18) continu.
  16. Pompe selon la revendication 15,
    caractérisée en ce que l'élément de guidage (18) présente une section transversale en forme de demi-cercle et est disposé à écartement radial concentriquement au tube (12).
  17. Pompe selon l'une des revendications 11 à 16,
    caractérisée en ce que les moyens déflecteurs (18) présentent une pluralité d'ouvertures.
  18. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que les surfaces des moyens déflecteurs (18) et/ou des parois (20, 21) de la chambre du côté intérieur de la chambre de séparation de gaz (7) présentent une rugosité avec de petites saillies et/ou cavités.
  19. Pompe selon l'une des revendications précédentes,
    caractérisée en ce que le tube (12) est formé par une zone tubulaire (25) inférieure continuellement fermée ou munie d'ouvertures sur laquelle est disposé un élément de grillage (26) supérieur muni d'une pluralité d'ouvertures, en particulier un tamis ou un treillis en fil métallique.
  20. Pompe selon la revendication 19,
    caractérisée en ce que la zone tubulaire inférieure est conformée en forme de secteur de cercle et l'élément de grillage (26) présente essentiellement deux surfaces de grillage (27) planes disposées selon un certain angle l'une par rapport à l'autre.
  21. Pompe selon la revendication 20,
    caractérisée en ce que l'arête (28) se trouvant entre les deux surfaces de grillage (27) planes est coudée obliquement vers l'intérieur, l'extrémité de l'arête (28) tournée vers la paroi (21) de chambre de la chambre (4) de la pompe étant décalée vers l'intérieur en direction de l'axe de la roue mobile.
  22. Pompe selon l'une des revendications 19 à 21,
    caractérisée en ce que l'élément de grillage (26) est maintenu à fermeture géométrique ou à adhérence sur la zone tubulaire (25) inférieure.
EP00100942A 1999-01-26 2000-01-19 Pompe centrifuge avec chambre de séparation de gaz Expired - Lifetime EP1024292B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19903047 1999-01-26
DE19903047 1999-01-26
DE19920780 1999-05-05
DE19920780A DE19920780A1 (de) 1999-01-26 1999-05-05 Kreiselpumpe mit Gasabscheidekammer

Publications (3)

Publication Number Publication Date
EP1024292A2 EP1024292A2 (fr) 2000-08-02
EP1024292A3 EP1024292A3 (fr) 2001-08-16
EP1024292B1 true EP1024292B1 (fr) 2004-08-04

Family

ID=26051495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00100942A Expired - Lifetime EP1024292B1 (fr) 1999-01-26 2000-01-19 Pompe centrifuge avec chambre de séparation de gaz

Country Status (1)

Country Link
EP (1) EP1024292B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1873399B1 (fr) * 2006-06-29 2012-12-05 Grundfos Management A/S Dispositif de pompe centrifuge
DE102010039566A1 (de) * 2010-08-20 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Laugenpumpe für wasserführende Haushaltgeräte und wasserführendes Haushaltgerät
KR20210104479A (ko) 2020-02-17 2021-08-25 엘지전자 주식회사 펌프

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370778A (en) * 1943-05-24 1945-03-06 Pesco Products Co Booster pump
DE1653725A1 (de) * 1967-09-29 1972-01-13 Hanning Elektro Werke Umwaelzpumpe fuer Heizungsanlagen
DE1937119A1 (de) * 1969-07-22 1971-02-04 Loewe Pumpenfabrik Gmbh Zentrifugalpumpe mit Gasabscheidung
DE3109918C2 (de) * 1981-03-14 1989-03-16 Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund Flüssigkeitspumpe mit Gasabscheidekammer
DE3637040A1 (de) * 1986-10-31 1988-05-19 Grundfos Int Kreiselpumpe als umwaelzpumpe fuer heizungsanlagen
DE3724684A1 (de) * 1987-07-25 1989-02-02 Oplaender Wilo Werk Gmbh Vorrichtung zum abscheiden von luft
DE3813654A1 (de) * 1988-04-22 1989-11-02 Licentia Gmbh Umwaelzpumpe
DE29718285U1 (de) * 1997-10-15 1997-12-11 Grundfos A/S, Bjerringbro Umwälzkreiselpumpe mit Entlüftungseinrichtung

Also Published As

Publication number Publication date
EP1024292A3 (fr) 2001-08-16
EP1024292A2 (fr) 2000-08-02

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