EP2776722A1 - Pompe centrifuge servant au refoulement de liquides dans un véhicule automobile - Google Patents

Pompe centrifuge servant au refoulement de liquides dans un véhicule automobile

Info

Publication number
EP2776722A1
EP2776722A1 EP12786960.0A EP12786960A EP2776722A1 EP 2776722 A1 EP2776722 A1 EP 2776722A1 EP 12786960 A EP12786960 A EP 12786960A EP 2776722 A1 EP2776722 A1 EP 2776722A1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
gap seal
webs
impeller
cover plate
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
EP12786960.0A
Other languages
German (de)
English (en)
Other versions
EP2776722B1 (fr
Inventor
Peter Köppler
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.)
Vitesco Technologies GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2776722A1 publication Critical patent/EP2776722A1/fr
Application granted granted Critical
Publication of EP2776722B1 publication Critical patent/EP2776722B1/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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

Definitions

  • Centrifugal pump for conveying liquids in a motor vehicle
  • the invention relates to a centrifugal pump for conveying fluids in a motor vehicle having a housing, with an intake passage and an outlet passage in the housing, with a driven, rotatable in the housing impeller, projecting from a support disc of the impeller blades and with a free ends of Blades connecting cover plate and with a gap seal between the cover plate and a cover plate of the opposite housing part of the housing.
  • centrifugal pumps are widely used in today's motor vehicles for pumping water and are known in practice.
  • the intake of the known centrifugal pump is guided to the center of the impeller.
  • the outlet channel adjoins the radially outer periphery of the impeller. Liquid located in the center of the impeller reaches the blades and, upon rotation of the impeller, is conveyed radially outward to the exhaust passage.
  • Between the cover plate having the side of the impeller and the cover plate opposite housing part thus creates a leading from the exhaust passage to the intake passage gap which is sealed by a gap seal.
  • the gap seal is a particularly narrow gap, which throttles the flow from the high-pressure, radially outer side to the low-pressure, radially inner side of the impeller.
  • the throttling has a decisive influence on the efficiency of the centrifugal pump.
  • the gap can not be arbitrarily reduced, because it must be prevented that tolerances of the components can lead to a grinding of the cover plate on the housing part.
  • the invention is based on the problem, a centrifugal pump of the type mentioned so on to form that it has a particularly high efficiency and is particularly inexpensive to manufacture.
  • the centrifugal pump according to the invention has a particularly high efficiency.
  • the webs are particularly easy to manufacture, so that the inventive centrifugal pump also has particularly low production costs.
  • the webs could, for example, each be guided to the middle of the gap seal.
  • it in order to increase the number of deflections and to increase the throttling effect of the gap seal, it contributes, when webs arranged opposite one another, in each case over half the height of the gap seal.
  • the gap seal has a particularly high throttling effect if a plurality of chambers limited by the webs have different cross sections in the gap seal.
  • the different cross sections of the chambers in the gap seal lead to a number of speed changes of the flow, which leads to their throttling.
  • a particularly high throttling effect of the gap seal can be achieved in a simple manner if the gap seal near the intake duct and near the outlet duct respectively has an annular channel arranged perpendicular to the plane of the support disk of the impeller Ring channels are connected to each other via a transverse channel and when the webs protrude into the transverse channel.
  • the components which limit the gap seal can simply be axially inserted and manufactured inexpensively, for example by injection molding. Furthermore, the gap seal is thereby designed stepped, which contributes to a particularly high throttle effect.
  • the webs are contrary to another advantageous development of the invention, the flow in the gap seal when the annular channels interconnecting transverse channel is inclined to the plane of the support disk of the impeller and when the projecting into the transverse channel webs are arranged perpendicular to the plane of the support disk of the impeller.
  • the alignment of the webs to the cross channel creates high turbulences in the flow, so that the gap seal has a particularly high throttling effect. Since the height of the blades to the radially outer boundary of the impeller decreases anyway, this design also leads to a particularly low material usage and thus to very low production costs.
  • the webs can be according to another advantageous embodiment of the invention particularly easy to manufacture in the manufacture of components by injection molding, when the webs to rejuvenate to their free end.
  • the cover plate and housing can be easily manufactured during production by injection molding. This leads, in particular in a production of components in mass production, as is common in motor vehicles, at very low production costs. The production of the webs and thus the generation of the gap seal is thereby cost neutral.
  • At least one of the components of the housing part or the cover plate is made of plastic.
  • Fig. 1 a centrifugal pump according to the invention with adjacent
  • Fig. 2 is a sectional view through a pump stage of
  • FIG. 1 shows a centrifugal pump 1 with a pump stage 3 driven by an electric motor 2.
  • the centrifugal pump 1 sucks in liquid via a suction line 4 from a storage container 5 and conveys it via a delivery line 6 to a consumer 7.
  • FIG. 2 shows a sectional illustration through the pump stage 3 of the centrifugal pump 1 from FIG. 1.
  • the pump stage 3 has a housing 8 with an impeller 9 rotatably arranged therein and driven by the electric motor 2 from FIG. 1.
  • the housing 8 has one connected to the intake line 4 Intake channel 10 and an outlet channel 11 connected to the feed line 6.
  • the impeller 9 has an on a shaft 12 of the electric motor. 2 rotatably arranged support plate 13 with projecting blades 14. Free ends of radially outer blades 14 are connected to a cover plate 15.
  • a gap seal 17 is arranged between the cover disk 15 and a housing part 16 of the housing opposite the cover disk 15.
  • the gap seal 17 has two concentric with the axis of rotation of the impeller 9 and perpendicular to the support plate 13 arranged annular channels 18, 19. Between the annular channels 18, 19 a first transverse channel 20 is arranged. Furthermore, the gap seal 17 has a second, arranged on the intake passage 10 transverse channel 21. The first transverse channel 20 is inclined to the plane of the support plate 13 is arranged.
  • the cover plate 15 and the cover plate 15 opposite housing part 16 each have in the gap seal 17 projecting and mutually offset webs 22 - 24 on. The webs 22-24 each project beyond half the height of the gap seal 17 and delimit chambers 25, 26 with different cross sections. At the second transverse channel 21, a further chamber 27 of webs 28, 29 of the cover plate 15 and a flat wall of the housing part 16 is limited.

Abstract

L'invention concerne une pompe centrifuge (1) servant au refoulement de liquides dans un véhicule automobile, comportant des éléments de liaison annulaires (22 - 24, 28, 29) qui pénètrent dans un joint de fente (17) entre une partie carter (16) et un disque de recouvrement (15) d'une roue à aubes (9). Les éléments de liaison (22 - 24, 28, 29) sont agencés sur les deux éléments de la partie carter (16) et du disque de recouvrement (15) et délimitent des chambres (25 - 27) qui accélèrent, retardent et dévient l'écoulement. Le joint de fente (17) exerce de ce fait une action d'étranglement importante.
EP12786960.0A 2011-11-10 2012-11-09 Pompe centrifuge servant au refoulement de liquides dans un véhicule automobile Active EP2776722B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011086128A DE102011086128A1 (de) 2011-11-10 2011-11-10 Kreiselpumpe zum Fördern von Flüssigkeiten in einem Kraftfahrzeug
PCT/EP2012/072209 WO2013068512A1 (fr) 2011-11-10 2012-11-09 Pompe centrifuge servant au refoulement de liquides dans un véhicule automobile

Publications (2)

Publication Number Publication Date
EP2776722A1 true EP2776722A1 (fr) 2014-09-17
EP2776722B1 EP2776722B1 (fr) 2020-04-01

Family

ID=47178680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12786960.0A Active EP2776722B1 (fr) 2011-11-10 2012-11-09 Pompe centrifuge servant au refoulement de liquides dans un véhicule automobile

Country Status (5)

Country Link
US (1) US9765792B2 (fr)
EP (1) EP2776722B1 (fr)
CN (1) CN104024648B (fr)
DE (1) DE102011086128A1 (fr)
WO (1) WO2013068512A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109306967A (zh) * 2017-07-28 2019-02-05 深圳市美好创亿医疗科技有限公司 风机
GB2568715B (en) 2017-11-24 2020-02-26 Jaguar Land Rover Ltd Pump assembly with tortuous flow path

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR386812A (fr) * 1907-02-26 1908-06-24 App Rateau Soc D Expl Des Système d'équilibrage automatique pour machines rotatives
DE714290C (de) 1940-03-18 1941-11-26 Escher Wyss Maschinenfabrik G Mit Fluessigkeit arbeitende ein- oder mehrstufige Kreiselmaschine
US2704232A (en) * 1951-08-02 1955-03-15 Johnston Plastic Pump Corp Machine frame connected bearing
CN2311637Y (zh) * 1997-08-15 1999-03-24 芜湖造纸网总厂 二相流泵
JP4274230B2 (ja) * 2006-11-21 2009-06-03 パナソニック電工株式会社 ポンプ
CN200999749Y (zh) * 2007-01-12 2008-01-02 上海连成（集团）有限公司 一种新型水泵叶轮密封装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2013068512A1 *

Also Published As

Publication number Publication date
CN104024648A (zh) 2014-09-03
EP2776722B1 (fr) 2020-04-01
WO2013068512A1 (fr) 2013-05-16
CN104024648B (zh) 2017-05-24
US20150086342A1 (en) 2015-03-26
US9765792B2 (en) 2017-09-19
DE102011086128A1 (de) 2013-05-16

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