EP2941569B1 - Système de lubrification pour une pompe à vide rotative - Google Patents

Système de lubrification pour une pompe à vide rotative Download PDF

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Publication number
EP2941569B1
EP2941569B1 EP13824385.2A EP13824385A EP2941569B1 EP 2941569 B1 EP2941569 B1 EP 2941569B1 EP 13824385 A EP13824385 A EP 13824385A EP 2941569 B1 EP2941569 B1 EP 2941569B1
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EP
European Patent Office
Prior art keywords
pump
duct
engine
suction
oil
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.)
Not-in-force
Application number
EP13824385.2A
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German (de)
English (en)
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EP2941569A1 (fr
Inventor
Leonardo Cadeddu
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VHIT SpA
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VHIT SpA
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Publication of EP2941569A1 publication Critical patent/EP2941569A1/fr
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Not-in-force 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • 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
    • F04C15/0088—Lubrication
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/06—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of other than internal-axis type
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 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 one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F04C2/02—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C2/06—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of other than internal-axis type
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum

Definitions

  • the present invention relates to rotary vacuum pumps, and more specifically it concerns a lubrication system for a rotary vacuum pump as defined in the preambles of claims 1 and 5.
  • Such pumps are known of from any of EP 1850007 , JP 2006118424 , GB 2069610 , DE 2011005464 .
  • the invention is applied in the so-called single-vane pumps, i.e. pumps where the rotor includes a single vane with constant length, and the following description will mainly refer to this preferred application.
  • Single-vane pumps are often used as vacuum pumps, for instance in the automotive field. They comprise a body defining a chamber, for instance with approximately elliptical cross section, in which the rotor rotates, in tangential contact, about an eccentric axis.
  • the rotor has a diametrical slot where the vane is mounted and the vane is radially movable in the slot so that, while the rotor is rotating, the vane ends slide substantially in contact with the internal wall of the chamber.
  • the chamber is divided by the rotor and the vane into a suction room and a pressure room, between which a pumped fluid is displaced.
  • Lubrication systems for rotary vacuum pumps used in the automotive field and mounted on the thermal engine are known, in which the pump is lubricated by the engine lubrication oil under pressure.
  • An example is disclosed in ES 2340182 .
  • a first problem encountered in such pumps and in their lubrication systems is the oil return, under particular speed conditions of the engine, towards the power brake through the non-return valve, with consequent damages, in particular, of the parts made of elastomeric material and incompatible with the engine oil.
  • Oil return is caused by depression variations occurring upstream and downstream the valves under particular speed conditions of the engine. Those depressions are such that they nullify the forces generated by the pressure difference and by the resilient means, and have the effect of making the sealing element operate in "weak” manner, thereby allowing oil migration towards the power brake.
  • a second problem may occur when the engine is turned off: such a problem is the oil suction into the pump when the engine stops and the oil return to the power brake when the engine is off.
  • the phenomenon of oil suction is due to the permanence of a depression inside the pump for relatively short but significant periods, occurring when the engine is turned off.
  • a third technical problem may occur in case the engine on which the pump is mounted, after having been turned off, rotates in reverse direction, driven by the vehicle drive system. If oil suction occurred as disclosed with reference to the second problem, such a third problem may cause a hydraulic block with consequent pump breaking.
  • a known solution for avoiding the occurrence of the second problem and the third problem related thereto is disclosed in document WO 2007003215 , which teaches applying non-return valves to the exhaust, which valves have the task of favouring a quick restoration of the atmospheric pressure inside the pump, when the engine is stopped.
  • a valve for protection in case of counter-rotation, discharging oil towards the engine oil sump, is provided in the lubricating system.
  • the invention also concerns a rotary vacuum pump as defined in Claim 5.
  • the invention also provides a lubrication method as defined in Claim 10.
  • FIG. 1 shows a diagram of a conventional lubrication system for a rotary vacuum pump.
  • a lubrication system for a single-vane pump is illustrated.
  • the present invention can however be employed in any pump with vane rotor.
  • pump 10 comprises a casing 40 defining a pumping chamber 44, for instance with an approximately elliptical cross-section, having an internal wall 42.
  • Chamber 44 houses a rotor 12 that, in known manner, rotates substantially tangent to wall 42.
  • the rotor has a radial slot 46 where a vane 22, radially slidable within the same slot, is mounted.
  • the vane and the rotor divide chamber 44 into a suction chamber 13 and a compression chamber 18.
  • a lubrication channel 11 connected to an engine lubrication pump 17, is formed in casing 40.
  • Lubrication system 100 comprises, besides pump 10, a suction duct 50, which connects pump 10 to a power brake 16 and through which pump 10 sucks air from the power brake.
  • Duct 50 is equipped with one-way valves 14 and 15.
  • Oil suction is due to the permanence of a depression inside pumping chamber 44 of pump 10 for relatively short but significant periods when the engine is turned off. Such a depression causes oil suction from lubrication channel 11.
  • a known solution to this problem consists in using a valve 21 for protection in case of counter-rotation, discharging oil towards oil sump 20 when the engine on which pump 10 is mounted, after having been turned off, rotates in reverse direction, driven by the vehicle drive system.
  • Oil return towards the power brake when the engine is off may take place when, after the engine has been turned off, depression is maintained for relatively long periods in suction chamber 13 and in the portion of suction duct 50 between one-way valves 14 and 15.
  • This phenomenon may give rise to two different problems: oil suction from the pump towards power brake 16, occurring if valves 14 and 15 perform a "weak” sealing, or sticking of the sealing element in valve 14, favoured by the soiling by oil residuals, when the valve sealing is good and hence the depression is maintained for very long periods, when the engine is off, with a consequent cooling that worsens the phenomenon.
  • Said sticking is due to the force generated by the flexible member of the valve, in addition to the pressure difference acting on the sealing member of the valve.
  • FIG. 2 and 3 A lubrication system 200 according to the invention will now be described with reference to Figs. 2 and 3 .
  • elements corresponding to those illustrated in Fig. 1 are denoted by the same reference numerals.
  • Fig. 2 shows a diagram of lubrication system 200 according to the invention
  • Fig. 3 shows an exemplary embodiment of a pump 300 for lubrication system 200 according to the invention.
  • Lubrication system 200 includes, like prior art lubrication system 100, a pump 300, for instance a single-vane pump.
  • the lubrication system according to the invention can be applied also to a multi-vane pump.
  • the system according to the invention further comprises suction duct 50, which connects pump 300 to power brake 16 and through which pump 300 sucks air from power brake 16. More particularly, air is sucked through valves 14 and 15.
  • duct 50 is equipped with two one-way valves 14, 15.
  • valve 14 is arranged to connect pump 300 with suction duct 50.
  • system 200 includes, like prior art system 100, lubrication channel 11 of pump 300, connected to engine lubrication pump 17, and check valve 19 located at the exit from a discharge duct 26, connecting the pumping chamber 44 with the inside of the engine and introducing the air-oil mixture into the engine after compression in compression chamber 18.
  • valve 21 for protection in case of counter-rotation has been eliminated in system 200 according to the invention.
  • the lubrication system further includes valve 21 for protection in case of counter-rotation, discharging oil towards oil sump 20, similarly to the prior art system shown in Fig. 1 .
  • Lubrication system 200 includes a connecting duct 23 connecting the inside of the engine with suction duct 50, in turn connecting pump 300 to power brake 16.
  • Connecting duct 23 has a narrowing 24 in its end portion, in correspondence of suction duct 50.
  • connecting duct 23 is connected to suction duct 50 in a portion comprised between one-way valves 14, 15.
  • connecting duct 23 is connected to suction duct 50 in a region downstream of and close to valve 14, and is arranged to connect suction duct 50 with the inside of the engine, preferably with an exhaust region 25 of the oil-air mixture, adjacent to check valve 19 and to the outlet of a discharge duct 26 connecting it.
  • the provision of the oriented flow of the air-oil mixture flowing through connecting duct 23 eliminates the problem of the oil return towards the power brake when the engine is on, since pressure variations upstream and downstream valves 14, 15 and the resulting oil migration towards the power brake are eliminated, and prevents the permanence of a depression inside the pump when the engine is off, which depression could cause oil suction into the pump.
  • the flow of the air-oil mixture sucked from the inside of the engine, passing through connecting duct 23 and narrowing 24, has moreover the advantage of optimising lubrication of the pumping assembly of pump 300 and of reducing the oil amount taken from the lubrication circuit, thereby reducing the overall energy utilised.
  • oil return towards the power brake or the sticking of the sealing element in valve 14 when the engine is off can no longer occur in system 200, since, when the motor is turned off, atmospheric pressure is established in pumping chamber 44 of pump 300 and between valves 14, 15, thanks to the provision of connecting duct 23.
  • valve 21 for protection in case of counter-rotation is provided to solve the problem caused by oil inflow generated by other phenomena, such as for instance accumulation of oil under pressure in the engine or oil draining, occurring in rare kinds of engines. In such cases, valve 21 for protection in case of counter-rotation is maintained.
  • Fig. 3 shows an exemplary embodiment of a pump 300 for lubrication system 200 according to the invention.
  • Pump 300 includes, in known manner, casing 40 and pumping chamber 44 with its internal wall 42.
  • Chamber 44 houses rotor 12, which, in known manner, rotates substantially tangent to wall 42.
  • the rotor has radial slot 46 where vane 22, radially slidable within the same slot, is mounted.
  • Lubrication channel 11, connected to engine lubrication pump 17, is preferably formed in casing 40.
  • Pump 300 further includes connecting duct 23 connecting the inside of the engine with suction duct 50, in turn connecting pump 300 to power brake 16.
  • pump 300 is connected to suction duct 50 by means of one-way valve 14.
  • Connecting duct 23 is formed, for instance drilled, in casing 40 and it has a narrowing 24 in its end portion, in correspondence of suction duct 50.
  • connecting duct 23 is connected to suction duct 50 between one-way valves 14, 15, downstream of and close to valve 14, and is arranged to connect suction duct 50 with the inside of the engine, preferably with the exhaust region of the oil-air mixture.
  • connecting duct 23 has a funnel-shaped end portion 27, which is formed in correspondence of the portion of casing 40 facing the engine, in region 25 adjacent to check valve 19 and to the outlet of discharge duct 26 where the air-oil mixture is exhausted.
  • the funnel shape of end portion 27 of connecting duct 23 assists in collecting oil particles at the suction.

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

Claims (10)

  1. Système de lubrification (200) pour une pompe aspirante rotative (300) apte à être raccordée à un moteur thermique, comprenant une pompe aspirante rotative (300), un conduit d'aspiration (50) raccordé à la pompe (300) et adapté à être raccordé à un frein assisté (16), caractérisé en ce que
    ledit système de lubrification (200) comprend en outre un conduit de raccordement (23) raccordé au conduit d'aspiration (50) et adapté pour être raccordé sur l'intérieur du moteur en vue de produire par l'intermédiaire du conduit de raccordement (23) un écoulement d'un mélange d'air et d'huile aspiré depuis l'intérieur du moteur.
  2. Système de lubrification (200) selon la revendication 1, dans lequel le conduit d'aspiration (50) est doté de deux soupapes unidirectionnelles (14, 15), caractérisé en ce que le conduit de raccordement (23) est raccordé au conduit d'aspiration (50) dans une partie du conduit (50) située entre les deux soupapes unidirectionnelles (14, 15).
  3. Système de lubrification (200) selon la revendication 2, caractérisé en ce que le conduit de raccordement (23) est raccordé au conduit d'aspiration (50) dans une partie située en aval de la soupape (14) et à proximité de cette dernière.
  4. Système de lubrification (200) selon l'une quelconque des revendications précédentes, caractérisé en ce que le conduit de raccordement (23) présente à sa partie d'extrémité un rétrécissement (24) qui se termine dans le conduit d'aspiration (50).
  5. Pompe aspirante rotative (300) apte à être raccordée à un conduit d'aspiration (50) d'un frein assisté (16), ladite pompe comprenant un logement (40) qui définit une chambre de pompage (44), un rotor (12) et une aile (22) montée sur le rotor (12), ledit rotor et ladite aile convenant pour diviser la chambre (44) en une chambre d'aspiration (13) et une chambre de compression (18),
    caractérisée en ce que la pompe (300) comprend en outre un conduit de raccordement (23) formé dans le logement (40) et adapté pour raccorder l'intérieur du moteur au conduit d'aspiration (50).
  6. Pompe aspirante rotative (300) selon la revendication 5, raccordée au conduit d'aspiration (50) au moyen d'une soupape unidirectionnelle (14), caractérisée en ce que le conduit de raccordement (23) est raccordé au conduit d'aspiration (50) en aval de la soupape (14) et à proximité de cette dernière.
  7. Pompe aspirante rotative (300) selon la revendication 6, caractérisée en ce que le conduit de raccordement (23) présente un rétrécissement (24) dans sa portion d'extrémité qui se termine dans le conduit d'aspiration (50).
  8. Pompe aspirante rotative (300) selon l'une quelconque des revendications 5 à 7, caractérisée en ce que le conduit de raccordement (23) est réalisé par forage.
  9. Pompe aspirante rotative (300) selon l'une quelconque des revendications 5 à 8, caractérisée en ce qu'en sa partie d'extrémité orientée vers la partie du logement (40) tournée vers le moteur, le conduit d'aspiration (23) a la forme d'un entonnoir.
  10. Procédé de lubrification d'une pompe aspirante rotative (300) selon l'une quelconque des revendications 5 à 9, dans lequel un écoulement orienté d'un mélange d'air et d'huile est produit à partir de la chambre de compression (18) de la pompe (300), ledit écoulement traversant le conduit de raccordement (23), atteignant le conduit d'aspiration (50) et revenant dans la chambre d'aspiration (13) de la pompe (300).
EP13824385.2A 2012-12-27 2013-12-13 Système de lubrification pour une pompe à vide rotative Not-in-force EP2941569B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT001157A ITTO20121157A1 (it) 2012-12-27 2012-12-27 Sistema di lubrificazione per una pompa per vuoto rotativa.
PCT/IB2013/060911 WO2014102650A1 (fr) 2012-12-27 2013-12-13 Système de lubrification pour une pompe à vide rotative

Publications (2)

Publication Number Publication Date
EP2941569A1 EP2941569A1 (fr) 2015-11-11
EP2941569B1 true EP2941569B1 (fr) 2017-06-28

Family

ID=47790366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13824385.2A Not-in-force EP2941569B1 (fr) 2012-12-27 2013-12-13 Système de lubrification pour une pompe à vide rotative

Country Status (5)

Country Link
US (1) US20150345496A1 (fr)
EP (1) EP2941569B1 (fr)
CN (1) CN104919182A (fr)
IT (1) ITTO20121157A1 (fr)
WO (1) WO2014102650A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2774438T3 (es) * 2014-06-27 2020-07-21 Ateliers Busch S A Método de bombeo en un sistema de bombas de vacío y sistema de bombas de vacío
US10696280B2 (en) 2015-03-25 2020-06-30 Pierburg Pump Technology Gmbh Vacuum pump with rotor shaft supported by friction bearings
US20180245592A1 (en) * 2015-08-19 2018-08-30 Pierburg Pump Technology Gmbh Lubricated automotive vacuum pump
IT201600132428A1 (it) * 2016-12-29 2018-06-29 Vhit S P A Soc Unipersonale Gruppo per vuoto
CN109826691B (zh) * 2017-11-23 2020-12-08 北汽福田汽车股份有限公司 曲轴箱通风系统和车辆
CN111486095B (zh) * 2020-04-16 2021-12-03 厚力德机器（杭州）有限公司 一种污水收集智控润滑系统及智控方法
JP7052101B1 (ja) * 2021-01-27 2022-04-11 株式会社アルバック 真空ポンプ及び真空ポンプの復圧方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005436A1 (de) * 1980-02-14 1981-08-20 Robert Bosch Gmbh, 7000 Stuttgart Vakuumpumpe
DE3841329C2 (de) 1987-12-12 1994-12-15 Barmag Barmer Maschf Flügelzellenvakuumpumpe
ITTO20040530A1 (it) * 2004-07-30 2004-10-30 Vhit Spa Dispositivo per la disattivazione di un apparecchio nei periodi in cui la sua funzione non e' necessaria
JP2006118424A (ja) * 2004-10-21 2006-05-11 Toyota Motor Corp バキュームポンプ
JP3874300B2 (ja) * 2005-02-16 2007-01-31 大豊工業株式会社 ベーンポンプ
WO2007003215A1 (fr) * 2005-07-05 2007-01-11 Vhit S.P.A. Pompe à vide à palettes avec soupape de refoulement
GB0611044D0 (en) * 2006-06-05 2006-07-12 Wabco Automotive Uk Ltd Multiple inlet pump
US7946118B2 (en) * 2009-04-02 2011-05-24 EcoMotors International Cooling an electrically controlled turbocharger
JP5447149B2 (ja) * 2010-04-27 2014-03-19 大豊工業株式会社 ベーンポンプ
DE102011005464B4 (de) * 2011-03-11 2014-07-17 Fmp Technology Gmbh Fluid Measurements & Projects Vorrichtung zur Erzeugung eines Unterdrucks

Also Published As

Publication number Publication date
ITTO20121157A1 (it) 2014-06-28
WO2014102650A1 (fr) 2014-07-03
CN104919182A (zh) 2015-09-16
EP2941569A1 (fr) 2015-11-11
US20150345496A1 (en) 2015-12-03

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