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EP1541871B1 - Etage d' une pompe à canal latéral - Google Patents

Etage d' une pompe à canal latéral Download PDF

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Publication number
EP1541871B1
EP1541871B1 EP04027043.1A EP04027043A EP1541871B1 EP 1541871 B1 EP1541871 B1 EP 1541871B1 EP 04027043 A EP04027043 A EP 04027043A EP 1541871 B1 EP1541871 B1 EP 1541871B1
Authority
EP
European Patent Office
Prior art keywords
rotor
blades
side channel
elements
pump stage
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
EP04027043.1A
Other languages
German (de)
English (en)
Other versions
EP1541871A2 (fr
EP1541871A3 (fr
Inventor
Peter Fahrenbach
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.)
Pfeiffer Vacuum GmbH
Original Assignee
Pfeiffer Vacuum 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 Pfeiffer Vacuum GmbH filed Critical Pfeiffer Vacuum GmbH
Publication of EP1541871A2 publication Critical patent/EP1541871A2/fr
Publication of EP1541871A3 publication Critical patent/EP1541871A3/fr
Application granted granted Critical
Publication of EP1541871B1 publication Critical patent/EP1541871B1/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
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/168—Pumps specially adapted to produce a vacuum

Definitions

  • the invention relates to a side channel pumping stage according to the preamble of the first protection claim.
  • Side channel pumps are a common type of turbomachinery. You will u. a. successfully used as vacuum pumps since they are suitable for oil-free operation (ie no lubricants in the working space).
  • the pump-active parts of a side channel pump in its basic version consist of an impeller and a plurality of open radial or spatially curved blades on the outer periphery and a side channel arranged on this circumference.
  • the side channel is divided by a barrier into a suction and pressure area.
  • the prior art ( EP 0 805 275 A2 ) includes a sokanalpumptreatment with mounted on a shaft rotor elements and stator elements, which are connected to the fixed parts of the pump, wherein the rotor elements on both sides pumping structures are mounted, which consist on at least one side of projecting blades in the axial direction, which are arranged on a plurality of concentric rings and in which a plurality of concentric channels are incorporated in the stator elements, in which engage the blades of the rotor elements.
  • There are gas inlet openings which are separated by barriers from the gas outlet openings.
  • This prior art side channel pumping stage has the disadvantage that the pump power is not optimized.
  • JP 1 267 390 A A pump in which the rotor blades are arranged.
  • the invention is based on the object to present a side channel pump, which generates a sufficiently high pressure difference in a compact design.
  • the length of the pump should be kept within limits.
  • a significant increase in the pumping speed is added as a further requirement.
  • the production must be rational and with less effort than existing systems can be performed.
  • the arrangement according to the invention allows a short design of the pump, in particular of the rotor.
  • the thermal change in length is kept within limits when the rotor is heated.
  • reduction of the axial gap is possible, thereby reducing backflow losses.
  • smaller gaps in turn affect the volume of construction. Due to the possibility of parallel pumping, the pumping speed can be increased significantly.
  • a combination of parallel and serial pump stages provides a simple way to optimize pumping speed and compression. The production can be carried out easily and rationally.
  • FIG. 1 A section of side channel pumping stages is in Fig. 1 shown in perspective.
  • the pumping elements consist in this example of two rotor elements 12 which are mounted on a shaft 10 and a stator element 14a (or 14b for another embodiment).
  • the stator element which is located between the rotor elements, is connected to stationary parts of the pump, not shown here. Due to the interaction of rotor and stator elements, which are arranged alternately one behind the other, the pumping effect is created.
  • the rotor elements are manufactured in such a way that holes 15 having the desired radius of the blades 16, 18 are bored in concentric elevations which extend in the axial direction from a rotor disk. Depending on the embodiment, these holes are either drilled according to the axial extent of the blades or completely drilled through. The arrangement of the blades can thus arise in mirror image on both sides of the disc. The method of piercing the holes can result in a particularly efficient production method in which several disks are stacked in one operation.
  • a plurality of pump stages can be arranged concentrically on the top and the bottom of a rotor disk.
  • the respective corresponding pumping stages of the top and the bottom are connected by holes, it is possible to operate the pumping stages in parallel or in series.
  • the stator element 14a is in Fig. 2a in perspective and in Fig. 3a and Fig. 4a shown in two sections AA and BB.
  • a rotor element 12 is arranged between two stator elements 14a.
  • concentric channels 22a and 24a are incorporated.
  • the blades 16 and 18 of the rotor disk 12 engage and cause the rotation of the promotion of the gas, which enters the channels at 32a and 34a.
  • the channels are at 26a and 28a locks, which cause the gas is not constantly conveyed in a circle, but at 36a and 38a leaves the channels and is conveyed in the adjacent channels in the axial direction. In this way, a gas delivery takes place in parallel in the concentric rings, whereby the pumping speed of a pumping stage is substantially increased.
  • FIG. 2b Another embodiment of the invention show Fig. 2b to Fig. 4b .
  • a stator element 14b is in Fig. 2b in perspective and in Fig. 3b and Fig. 4b shown in two sections AA and BB.
  • a rotor element 12 is arranged between two stator elements 14b.
  • the stator concentric channels 22b and 24b are incorporated. In these channels, the blades 16 and 18 of the rotor disc 12 engage and cause the rotation of the promotion of the gas, which enters at 32 b in the channel 22 b.
  • At 36b causes the barrier 26b that the gas leaves the channel 22b and passes through a connecting channel 30 at 34b to the channel 24b.
  • the barrier 28b causes the gas to exit the channel 24b via the gas outlet opening 38b in order to be conveyed further via a subsequent step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Claims (6)

  1. Etage d'une pompe à canal latéral comprenant des éléments de rotor (12) fixés sur un arbre (10) et des éléments de stator (14a, 14b) qui sont connectés aux parties fixes de la pompe, des structures à action de pompage des deux côtés étant montées sur les éléments de rotor (12), celles-ci se composant sur au moins un côté d'aubes (16, 18) faisant saillie dans la direction axiale, lesquelles sont disposées sur une ou plusieurs bagues concentriques, un ou plusieurs canaux concentriques (22a, 24a, 22b, 24b) étant réalisés dans les éléments de stator (14a, 14b), dans lesquels canaux viennent en prise les aubes (16, 18) des éléments de rotor, et des ouvertures d'entrée de gaz (32a, 34a, 32b, 34b) étant prévues, lesquelles sont séparées des ouvertures de sortie de gaz (36a, 38a, 36b, 38b) par des barrières (26a, 28a, 26b, 28b), caractérisé en ce que des trous (15) traversants dans la direction axiale se trouvent dans l'élément de rotor (12) entre les aubes (16, 18).
  2. Etage d'une pompe à canal latéral selon la revendication 1, caractérisé en ce que les aubes (16, 18) sont disposées des deux côtés des éléments de rotor (12).
  3. Etage d'une pompe à canal latéral selon la revendication 1 ou 2, caractérisé en ce que les guides de gaz sont connectés les uns aux autres des deux côtés d'un élément de rotor.
  4. Etage d'une pompe à canal latéral selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que l'ouverture de sortie de gaz (36b) d'un canal (22b) est connectée par le biais d'un canal de liaison (30) à l'ouverture d'entrée de gaz (34b) d'un canal adjacent (24b).
  5. Procédé de fabrication d'éléments de rotor (12) d'un étage d'une pompe à canal latéral, caractérisé en ce que des trous (15) avec le rayon souhaité des aubes (16, 18) sont percés dans des rehaussements concentriques qui s'étendent dans la direction axiale depuis un disque de rotor.
  6. Procédé de fabrication d'éléments de rotor (12) d'un étage d'une pompe à canal latéral selon la revendication 5, caractérisé en ce que les trous (15) sont percés entre les aubes (16, 18) à travers le disque de rotor.
EP04027043.1A 2003-12-10 2004-11-13 Etage d' une pompe à canal latéral Expired - Lifetime EP1541871B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357546 2003-12-10
DE2003157546 DE10357546A1 (de) 2003-12-10 2003-12-10 Seitenkanalpumpstufe

Publications (3)

Publication Number Publication Date
EP1541871A2 EP1541871A2 (fr) 2005-06-15
EP1541871A3 EP1541871A3 (fr) 2011-09-14
EP1541871B1 true EP1541871B1 (fr) 2015-08-05

Family

ID=34485274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04027043.1A Expired - Lifetime EP1541871B1 (fr) 2003-12-10 2004-11-13 Etage d' une pompe à canal latéral

Country Status (2)

Country Link
EP (1) EP1541871B1 (fr)
DE (1) DE10357546A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014067704A1 (fr) * 2012-10-29 2014-05-08 Continental Automotive Gmbh Turbomachine destinée à un véhicule automobile
DE102013108482A1 (de) * 2013-08-06 2015-02-12 Pfeiffer Vacuum Gmbh Vakuumpumpstufe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253246A (en) * 1990-12-15 1992-09-02 Dowty Defence & Air Syst Regenerative pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE872819C (de) * 1944-11-04 1953-04-09 Siemens Ag Ringverdichter
JPS61247893A (ja) * 1985-04-26 1986-11-05 Hitachi Ltd 真空ポンプ
JPH01267390A (ja) 1988-04-18 1989-10-25 Daikin Ind Ltd 渦流形真空ポンプ
RU2032836C1 (ru) * 1992-12-29 1995-04-10 Владимир Николаевич Хмара Вихревой компрессор
DE4314418A1 (de) * 1993-05-03 1994-11-10 Leybold Ag Reibungsvakuumpumpe mit unterschiedlich gestalteten Pumpenabschnitten
GB9609281D0 (en) 1996-05-03 1996-07-10 Boc Group Plc Improved vacuum pumps
DE19756026C2 (de) * 1997-12-17 2003-01-09 Webasto Thermosysteme Gmbh Zweistufiges Ringkanalgebläse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253246A (en) * 1990-12-15 1992-09-02 Dowty Defence & Air Syst Regenerative pump

Also Published As

Publication number Publication date
EP1541871A2 (fr) 2005-06-15
EP1541871A3 (fr) 2011-09-14
DE10357546A1 (de) 2005-07-07

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