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WO2018019731A1 - Pompe à palettes, en particulier pompe à vide - Google Patents

Pompe à palettes, en particulier pompe à vide Download PDF

Info

Publication number
WO2018019731A1
WO2018019731A1 PCT/EP2017/068536 EP2017068536W WO2018019731A1 WO 2018019731 A1 WO2018019731 A1 WO 2018019731A1 EP 2017068536 W EP2017068536 W EP 2017068536W WO 2018019731 A1 WO2018019731 A1 WO 2018019731A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
pump
motor
motor rotor
vane
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.)
Ceased
Application number
PCT/EP2017/068536
Other languages
German (de)
English (en)
Inventor
Ingo Geue
Theodor Hüser
Christian PRAEST
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella GmbH and Co KGaA
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 Hella GmbH and Co KGaA filed Critical Hella GmbH and Co KGaA
Priority to CN201780042644.9A priority Critical patent/CN109416040B/zh
Publication of WO2018019731A1 publication Critical patent/WO2018019731A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • F04C2/344—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 with vanes reciprocating with respect to the inner member
    • F04C2/3446—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 with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps

Definitions

  • Vane pump in particular vacuum pump
  • the present invention relates to a vane pump referred to in the preamble of claim 1 Art.
  • DE 10 2014 226 347 B3 shows a vane pump designed as a vacuum pump with a brushless DC motor, which has a motor stator designed as an outer ring and a cup-shaped motor rotor, wherein the motor stator surrounds the cup-shaped motor rotor.
  • a pump rotor with a vane mounted on the pump rotor is arranged eccentrically in the motor rotor.
  • the pump rotor is mounted on a cover plate and kinematically coupled by means of the wing to the motor rotor.
  • the motor rotor on a guide slot for the wing.
  • the present invention has for its object to provide an alternative design of a vane pump, in particular vacuum pump.
  • a vane pump in particular a vacuum pump, with the features of claim 1, which is characterized in that the pump rotor is kinematically coupled directly to the motor rotor, the ki nematic coupling is formed between a arranged on the inside of the cup-shaped motor rotor bottom and a ground opposite the base surface of the pump rotor.
  • a significant advantage of the teaching according to the invention is in particular that vane pumps with more than one wing with a comparatively small space and also reduced friction can be realized.
  • the kinematic coupling of motor rotor and pump rotor on the type and constructive training within wide suitable limits freely selectable.
  • the kinematic coupling is designed as a positive connection, in particular a tongue and groove connection. Positive connections are robust and reliable in function. Tongue and groove connections are also structurally easy to implement.
  • the design according to the invention is also designed for use with only a single wing, so called a mono wing suitable.
  • a plurality of vanes in particular distributed uniformly over the circumference of the pump rotor, are arranged on the pump rotor.
  • a multi-vane pump for example with four or eight wings, has the particular advantage that the pump is denser. The more blades are used, the denser the pump. Accordingly, the power loss is reduced with the number of wings.
  • the acoustics are also improved by a higher number of wings.
  • a higher number of blades also means higher noise frequencies, which are easier to damp, so that the noise emission is lower with a higher number of blades.
  • the cover plate can be designed such that it serves both as a bearing for the pump rotor and at the same time seals the interior of the motor rotor to the environment.
  • a cup-shaped inner space of the motor rotor sealing intermediate plate is arranged on the pump rotor side facing the cover plate.
  • the cover plate can be designed specifically for the function as a bearing for the pump rotor, while the intermediate plate is designed specifically for the function of sealing the interior of the cup-shaped motor rotor.
  • the intermediate plate is formed as a pressure plate which is biased by a spring against the motor rotor, the pump rotor and the at least one arranged on the pump rotor blades.
  • the sealing of the interior of the pot-shaped motor rotor is further improved. In particular, this makes it possible to compensate for component tolerances, without adversely affecting the sealing of the motor rotor.
  • the pressure plate is designed as a wear plate. This makes it possible to further reduce the wear of the motor rotor, the pump rotor and the at least one blade arranged on the pump rotor. At the same time it is achieved that only one component, namely the wear plate, must be replaced in case of wear. It is particularly advantageous if the wear plate is designed over the entire life of the pump. Then a change of the wear plate is not necessary.
  • the wear plate can be specially selected for function as wear part according to type, material, shape, dimensioning and arrangement. Characterized in that the wear plate is biased by a spring against the motor rotor, the pump rotor and at least one arranged on the pump rotor blades, the wear plate is always close to the motor rotor, the pump rotor and the at least one arranged on the pump rotor even with their increasing wear Wing adjacent. The same applies to a wear that is reduced by the wear plate but still exists in the motor rotor, the pump rotor and the at least one vane arranged on the pump rotor.
  • the intermediate plate on the type, material, shape, dimensioning and arrangement within wide suitable limits freely selectable.
  • the intermediate plate has at least one outlet nozzle, wherein the intermediate plate is fastened and / or positioned on the cover plate by means of the outlet nozzle.
  • the vane pump has a housing cover which encloses the cover plate.
  • this ensures that the cover plate and thus the positioning of the pump rotor mounted on the cover plate are effectively protected against undesired environmental influences, such as impacts or the like.
  • the space enclosed between the cover plate and the housing cover can be formed as a silencer. Accordingly, the noise emission of the vane pump according to the invention can be further reduced.
  • the vane pump has a separate housing.
  • the motor stator is at the same time as a housing part of the Vane pump formed. In this way, the number of components is further reduced.
  • FIG. 1 shows an embodiment of a vane pump according to the invention in a sectional view.
  • FIG. 2 shows the embodiment of Figure 1 in a first exploded view.
  • 3 shows the embodiment of Figure 1 in a second exploded view.
  • FIG. 4 shows the embodiment of FIG. 1 in a third exploded view
  • Fig. 5 shows a detail of the embodiment of Fig. 1 in the region of the bottom of
  • Fig. 1 shows an embodiment of a vane pump according to the invention in a sectional view.
  • the vane pump is designed as a dry-running vacuum pump for a brake booster and has a brushless DC motor, a so-called BLDC motor on.
  • the motor stator 2 is formed as an outer ring and surrounds a cup-shaped motor rotor 4, in which a pump rotor 6 is arranged eccentrically.
  • the pot-shaped motor rotor 4 is flying on the motor stator 2 and mounted rotatably about a motor rotor axis 4.1.
  • the motor stator 2 is made of a thermoplastic, are cast in the electric coils.
  • the pump rotor 6 is rotatably mounted on a cover plate 8 about a pump rotor axis 6.1.
  • the cover plate 8 on a bearing pin 8.1.
  • the wings 10 are, as is apparent from FIGS. 2 to 4, guided in columns 6.2 of the pump rotor 6 and slide in the operation of the vacuum pump on the lateral inner wall 4.2 of the motor rotor 4. In order to avoid an imbalance, the wings 10 are over the circumference arranged the pump rotor 6 evenly distributed.
  • the pump rotor 6 is kinematically coupled directly to the motor rotor 4, wherein the kinematic coupling between a arranged on the inside of the cup-shaped motor rotor 4 bottom 4.3 and the bottom 4.3 opposite base 6.3 of the pump rotor 6 is formed.
  • two symmetrically to the motor rotor axis 4.1 arranged longitudinal grooves 4.3.1 are formed in the bottom 4.3 of the motor rotor 4, one of which is arranged with a arranged on the pump rotor 6 and designed as a pin spring 6.4 in power transmission connection.
  • the vacuum pump is partially shown in a detail. 5
  • the pot-shaped motor rotor 4 is in a plan view and on the right side of FIG. 5, the pump rotor 6 can be seen in a side view.
  • the wings are not shown in Fig. 5 for the sake of clarity.
  • the kinematic coupling is thus here as a tongue and groove connection, ie a positive connection formed. In principle, however, a non-positive connection would be conceivable.
  • an intermediate plate 12 is mounted on the cover plate 8, wherein the intermediate plate 12 is formed here both as a pressure plate as well as a wear plate.
  • the intermediate plate 12 seals the interior of the motor rotor 4, in which the pump rotor 6 is arranged eccentrically with the wings 10, against the environment.
  • the intermediate plate 12 is biased by means of two springs 14 against the motor rotor 4, the pump rotor 6 and the wings 10.
  • the springs 14 press on each one formed on the intermediate plate 12 bevel, so that a spring force component of the springs 14 biases the intermediate plate 12 parallel to the pump rotor axis 6.1 in the direction of the bottom 4.3 of the motor rotor 4.
  • the two slopes of the intermediate plate 12 are not shown in the figures.
  • At least one spring may be arranged such that the effective direction of the spring itself runs parallel to the pump rotor axis of rotation 6.1.
  • the intermediate plate 12 is also designed as a wear plate of polytetrafluoroethylene, abbreviated PTFE.
  • the intermediate plate 12 is mounted here so with play on the bearing pin 8.1 of the cover plate 8, that the intermediate plate 12 by means of the spring force of the springs 14 even with wearing components, ie in the wear of the intermediate plate 12, the motor rotor 4, the pump rotor 6 and the wing 10, the interior of the pot-shaped motor rotor 4 securely seals against the environment.
  • the storage of the intermediate plate 12 with clearance has the further advantage that component tolerances and temperature fluctuations can be compensated.
  • the present embodiment of the vacuum pump according to the invention is also maintenance-free. Accordingly, a change of wearing parts during the entire life of the vacuum pump is eliminated.
  • the intermediate plate 12 also has an inlet region 12.1, an outlet region 12.2, an outlet connection 12.3 in fluid communication with the outlet region 12.2 and a further connection piece 12.4.
  • the outlet 12.3 and the other nozzle 12.4 are of identical design and serve both the attachment and positioning of the intermediate plate 12 on the cover plate. 8
  • the outlet port 12.3 and the further port 12.4 engage in the cover plate 8 formed openings 8.2.
  • the outlet nozzle 12.3 and the further nozzle 12.4 in the two openings 8.2 are between the nozzle 12.3 and 12.4 and the openings 8.2 rubber seals 1 6 arranged.
  • the vane pump has a housing cover 18 which surrounds the cover plate 8 and forms a housing 22 for the vane pump according to the invention with the motor stator 2 formed as a housing part and a housing bottom 20.
  • the space enclosed by the housing cover 18 and the cover plate 8 acts as a muffler.
  • air is sucked into the interior of the housing 22 of the vacuum pump through an inlet port 20.1 formed on the housing bottom 20, flows through the motor stator 2 and passes through the inlet region 12.1 of the intermediate plate 12 into the interior of the cup-shaped motor rotor 4.
  • the air flow is symbolized by arrows 24 in Fig. 1.
  • the aforementioned gap acts as a muffler.
  • the compressed air is then released into the open environment through an outlet opening 18.1 formed in the housing cover 18.
  • the invention is not limited to the present embodiment.
  • teaching of the invention is not limited to use in vacuum pumps.
  • thermoplastics and thermosets for the motor stator and the motor rotor could be used.
  • non-plastics such as metal die-casting, in particular die-cast aluminum, possible.
  • composite materials such as fiber composites.
  • the at least one spring for biasing the intermediate plate against the motor rotor, the pump rotor and the at least one arranged on the pump rotor blades can be freely selected on the type, material, dimensioning and arrangement in wide appropriate limits.
  • PTFE polytetrafluoroethylene
  • a different lubricious and wear-resistant material can be used for the wear plate depending on the application.
  • the gap formed by the cover plate and the housing cover can also fulfill other functions in addition to the function as a muffler and / or additional components, such as at least one check valve, can be accommodated in the intermediate space and / or arranged on the cover plate or the housing cover.
  • at least one check valve would be conceivable in the cover plate and / or in the outlet opening of the housing cover.
  • At least one check valve may be arranged in the air inlet region, for example at the inlet socket of the housing bottom or in through openings of the motor stator required for the air inlet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

La présente invention concerne une pompe à palettes, en particulier une pompe à vide, comprenant un moteur à courant continu sans balais qui comporte un stator de moteur se présentant sous forme de bague extérieure et un rotor de moteur en forme de pot, une plaque de recouvrement, un rotor de pompe et au moins une palette montée sur le rotor de pompe, le stator de moteur entourant le rotor de moteur en forme de pot et le rotor de pompe étant monté sur la plaque de recouvrement, de manière excentrique dans le rotor de moteur et étant accouplé cinématiquement audit rotor de moteur. L'invention vise à fournir une variante de structure de pompe à palettes, en particulier de pompe à vide. A cet effet, selon l'invention le rotor de pompe (6) est accouplé cinématiquement directement au rotor de moteur (4), l'accouplement cinématique étant réalisé entre un fond (4.3) disposé sur la face intérieure du rotor de moteur (4) en forme de pot et une face de base (6.3) du rotor de pompe (6), située à l'opposé du fond (4.3).
PCT/EP2017/068536 2016-07-26 2017-07-21 Pompe à palettes, en particulier pompe à vide Ceased WO2018019731A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780042644.9A CN109416040B (zh) 2016-07-26 2017-07-21 叶片泵

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016113745.6 2016-07-26
DE102016113745.6A DE102016113745A1 (de) 2016-07-26 2016-07-26 Flügelzellenpumpe, insbesondere Vakuumpumpe

Publications (1)

Publication Number Publication Date
WO2018019731A1 true WO2018019731A1 (fr) 2018-02-01

Family

ID=59383572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/068536 Ceased WO2018019731A1 (fr) 2016-07-26 2017-07-21 Pompe à palettes, en particulier pompe à vide

Country Status (3)

Country Link
CN (1) CN109416040B (fr)
DE (1) DE102016113745A1 (fr)
WO (1) WO2018019731A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020172605A1 (en) * 2000-03-29 2002-11-21 Franz Arbogast Motor-pump unit
WO2010025799A2 (fr) * 2008-09-05 2010-03-11 Ixetic Hückeswagen Gmbh Pompe à vide
US20160010646A1 (en) * 2014-07-08 2016-01-14 Joma-Polytec Gmbh Rotary vane pump for generating a vacuum
DE102014226347B3 (de) 2014-12-18 2016-06-23 Magna Powertrain Bad Homburg GmbH Vakuumpumpe und Verfahren zum Betrieb der Vakuumpumpe

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221252A1 (fr) * 1985-10-07 1987-05-13 NOTRON Engineering AG Pompe à cellules avec membranes
JP4780154B2 (ja) * 2008-07-18 2011-09-28 パナソニック電工株式会社 ベーンポンプ
JP5391016B2 (ja) * 2009-09-30 2014-01-15 アスモ株式会社 電動ポンプ
CN202926613U (zh) * 2012-11-01 2013-05-08 浙江奥力康科技有限公司 一种新型超高压叶片泵
EP2746532B1 (fr) * 2012-12-19 2018-02-14 Pierburg Pump Technology GmbH Agencement de rotor pour une pompe à vide ainsi que la pompe à vide dotée d'un tel agencement de rotor
EP3078858A1 (fr) * 2015-04-07 2016-10-12 WABCO Europe BVBA Compresseur à vide électrique lubrifié à l'huile, compact et hautement intégré

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020172605A1 (en) * 2000-03-29 2002-11-21 Franz Arbogast Motor-pump unit
WO2010025799A2 (fr) * 2008-09-05 2010-03-11 Ixetic Hückeswagen Gmbh Pompe à vide
US20160010646A1 (en) * 2014-07-08 2016-01-14 Joma-Polytec Gmbh Rotary vane pump for generating a vacuum
DE102014226347B3 (de) 2014-12-18 2016-06-23 Magna Powertrain Bad Homburg GmbH Vakuumpumpe und Verfahren zum Betrieb der Vakuumpumpe

Also Published As

Publication number Publication date
DE102016113745A1 (de) 2018-02-01
CN109416040A (zh) 2019-03-01
CN109416040B (zh) 2020-04-14

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