EP0667455B1 - Double pompe - Google Patents

Double pompe Download PDF

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Publication number
EP0667455B1
EP0667455B1 EP95101520A EP95101520A EP0667455B1 EP 0667455 B1 EP0667455 B1 EP 0667455B1 EP 95101520 A EP95101520 A EP 95101520A EP 95101520 A EP95101520 A EP 95101520A EP 0667455 B1 EP0667455 B1 EP 0667455B1
Authority
EP
European Patent Office
Prior art keywords
channel
double pump
pump according
inlet channel
inlet
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
EP95101520A
Other languages
German (de)
English (en)
Other versions
EP0667455A1 (fr
Inventor
Thomas Materne
Günter Strelow
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 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 Wilo GmbH filed Critical Wilo GmbH
Publication of EP0667455A1 publication Critical patent/EP0667455A1/fr
Application granted granted Critical
Publication of EP0667455B1 publication Critical patent/EP0667455B1/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
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type

Definitions

  • the invention relates to a double pump with an inlet A. for both pumps, from one inlet channel to both Outlet openings of the two pumps branched.
  • a double pump as is known for example from EP 0 667 455.
  • Such a double pump has two centrifugal pumps arranged next to one another, which have a common inlet channel which leads to the respective suction openings.
  • a double pump is usually arranged in the system in such a way that the upper pump would not work without a separate vent can be properly filled with the medium. The If the pump is not self-priming, it can Do not promote the medium.
  • the object of the invention is a double pump especially with non-self-priming pumps improve that the pump is not running by the running pump is vented safely.
  • the inlet duct in front of and / or behind the branch sideways at least one to a chamber or to one Has side channel leading opening through which in the Chamber or in the side channel, a negative pressure can be generated is, the inside of the non-running pump with the Chamber / the side channel is connected so that air from the pump that is not running can be sucked in.
  • the invention now creates the possibility of both Containers or rooms as well as the pump described above, without a separate venting facility on this must be attached completely with the medium too fill or vent and thus start the to ensure the pump is at a standstill.
  • the double pump is of simple construction and assembly and has small external dimensions.
  • Advantageous embodiments of the invention are in the Subclaims listed.
  • the double pump has a first lower pump 13 and one second upper, not self-priming pump 14, the Impeller axes are parallel to each other and each are driven by electric motors. Preferably they are centrifugal pumps with canned motors.
  • the pump housing of both pumps are connected to each other and thus form a common housing 16, which on the a projecting side facing away from the motors Housing part forms the two chambers 6,7 and one Inlet channel 3.2 encloses.
  • the two chambers 6,7 and diametrical between them, separating them Inlet channel 2, 3 together form a hollow circular disk, whose axis is parallel to the axes of the impellers and whose side wall facing away from the pumps is open.
  • This Side wall forms a flat connecting surface 15 with which the double pump to a flat side wall Consumer can be connected.
  • the Consumer side wall two inlet openings and one Outlet opening, which with the pressure outlets 11.12 Double pump and the central inlet A or the inlet channel 2.3 aligned.
  • the outlets 11, 12 of the pump also at the level of the pad 15 and penetrate the Chamber 6 or 7.
  • the central inlet or inlet A is in the middle of the Pad 15 and thus in the middle of the inlet duct which branches into two inlet channels 2, 3, each radial are arranged.
  • the upper inlet duct 3 ends at the Intake opening E or the suction port of the upper, second Pump 14, and the lower inlet channel 2 ends at the Intake opening D or on the suction port of the first lower pump 13. This flows through the central Inlet or inlet A sucked medium in two flows divided via channels 2, 3 to the first and second pumps, when both pumps are running at the same time.
  • the diametrical inlet channel 2, 3 is mutually connected parallel side walls 17, 18 from the side chambers 6.7 separately.
  • the area of the suction openings E, D are in the Sidewalls 17,18 side openings 4,5,8,9, which the Connect channels 2,3 with the chambers 6,7.
  • This relatively small openings especially in Slit shape, allow a flow through the chamber 6.7 from the upper side openings 4.5 to the lower Side openings or in reverse flow direction, depending on which of the two pumps is stopped. As a result, the running pump sucks air out of the pumps not running.
  • the upper channel 3 be separated from the lower channel 2 by a partition 1, the channel parts 2,3 are the same size and the Partition 1 divides the incoming medium into two streams.
  • the through the suction port D of the lower pump requested amount of medium is larger than that directly portion provided by channel 2.
  • This creates a negative pressure in the lower area of the Space.
  • This causes the medium to be sucked in part-segment-shaped chambers 6 and 7 through the Side openings 8 and 9 at the end of the channel 2.
  • Die induced circulation causes entrainment of the the chambers 6 and 7 collected air through the openings of channel 2.
  • it gets into the upper motor Collected air through the intake opening (suction nozzle) E into the chambers to be vented and becomes largely additionally dissipated.
  • the profiles or the rib-shaped guide elements 10 accelerate air separation. On the one hand, you walk the air accumulated in the room over a large area into small ones Air bubbles around and increase the in through a jet effect the sub-segments 6 and 7 brought about circulation of the Medium.
  • the upper pump is free of air and runs anytime without problems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Claims (10)

  1. Pompe double avec une entrée (A) pour les deux pompes, de laquelle bifurque un canal d'entrée (2,3) jusqu'aux deux ouvertures de sortie des deux pompes,
    caractérisée en ce que le canal d'entrée (2,3) présente, devant et/ou derrière la dérivation, latéralement, une ouverture (4,5,8,9) conduisant à une chambre (6,7) ou à un canal latéral, à travers laquelle peut être créée une dépression dans la chambre (6,7) ou respectivement dans le canal latéral, l'intérieur de la pompe non en fonctionnement étant relié à la chambre (6,7)/au canal latéral, de sorte que de l'air peut être aspiré hors de la pompe non en fonctionnement.
  2. Pompe double selon la revendication 1,
    caractérisée en ce que l'intérieur de la pompe (14) non en fonctionnement est relié par l'intermédiaire de l'ouverture d'aspiration (E) de celle-ci et au moins une ouverture latérale (4,5), à la chambre/ou canal latéral (6,7).
  3. Pompe double selon la revendication 1 ou 2,
    caractérisée en ce qu'une chambre/un canal latéral (6,7) est disposé de deux côtés du canal d'entrée (2,3).
  4. Pompe double selon l'une des revendications précédentes,
    caractérisée en ce que le canal d'entrée (2,3) relie l'une à l'autre les deux ouvertures d'aspiration (E,D) des deux pompes (13,14) et présente, près de chaque ouverture d'aspiration, respectivement au moins une ouverture latérale (4,5,8,9).
  5. Pompe double selon l'une des revendications précédentes,
    caractérisée en ce que le canal d'entrée (2,3) présente, près de chaque ouverture d'aspiration (E,D), respectivement deux ouvertures latérales (4,5,8,9) opposées l'une à l'autre, qui conduisent respectivement dans une chambre/canal latéral (6,7).
  6. Pompe double selon l'une des revendications précédentes,
    caractérisée en ce que l'entrée (A) et les sorties (11,12) de la pompe double se trouvent dans un plan (surface de raccordement 15) qui peut être fixé à la paroi plane d'un consommateur, le canal d'entrée (2,3) traversant le plan diamétralement et aussi bien les chambres/canaux latéraux (6,7) se trouvant latéralement au canal d'entrée que le canal d'entrée (2,3) s'ouvrant dans le plan (15) qui peut être obturé par la paroi latérale du consommateur.
  7. Pompe double selon l'une des revendications précédentes,
    caractérisée en ce que des éléments de guidage (10) en forme de nervures sont disposés dans la chambre/le canal latéral (6,7) dans la direction d'écoulement.
  8. Pompe double selon l'une des revendications précédentes,
    caractérisée en ce que les deux chambres/canaux latéraux (6,7) et le canal d'entrée (2,3) diamétral se trouvant entre eux, les séparant forment ensemble un disque circulaire creux qui peut être obturé par la paroi latérale du consommateur.
  9. Pompe double selon la revendication 8,
    caractérisée en ce que l'axe du disque circulaire s'étend parallèlement aux axes des rotors des deux pompes.
  10. Pompe double selon l'une des revendications précédentes,
    caractérisée en ce que le canal d'entrée (2,3) est divisé par une paroi de séparation (1) à hauteur de l'entrée (A), en deux sections de même grandeur conduisant respectivement à une ouverture d'aspiration (E,D), de sorte que la paroi de séparation (1) divise le milieu entrant en deux courants.
EP95101520A 1994-02-07 1995-02-04 Double pompe Expired - Lifetime EP0667455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4403697A DE4403697A1 (de) 1994-02-07 1994-02-07 Doppelpumpe
DE4403697 1994-02-07

Publications (2)

Publication Number Publication Date
EP0667455A1 EP0667455A1 (fr) 1995-08-16
EP0667455B1 true EP0667455B1 (fr) 1998-01-14

Family

ID=6509629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101520A Expired - Lifetime EP0667455B1 (fr) 1994-02-07 1995-02-04 Double pompe

Country Status (2)

Country Link
EP (1) EP0667455B1 (fr)
DE (2) DE4403697A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702477B4 (de) * 1997-01-24 2006-02-02 Wilo Ag Doppelpumpe
DE59910845D1 (de) * 1999-08-21 2004-11-18 Grundfos As Kreiselpumpengehäuse für eine an zwei Umwälzkreise anschliessbare Pumpe
DE102012204212B4 (de) * 2012-03-16 2024-02-29 Mahle International Gmbh Pumpenmodul mit einem Gehäuse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2105733A5 (fr) * 1970-09-18 1972-04-28 Materiel Telephonique
FR2376309A1 (fr) * 1977-01-04 1978-07-28 Materiel Telephonique Dispositif pour regler le passage et le debit d'un flux hydraulique, son procede de montage dans une pompe de circulation de type jumele
US4738584A (en) * 1986-07-28 1988-04-19 Carl Price Multiple impeller pump
DE4021410A1 (de) * 1990-07-06 1992-01-16 Oplaender Wilo Werk Gmbh Doppel-kreiselpumpe

Also Published As

Publication number Publication date
DE59501232D1 (de) 1998-02-19
DE4403697A1 (de) 1995-08-10
EP0667455A1 (fr) 1995-08-16

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