EP2689134B1 - Système de dosage - Google Patents

Système de dosage Download PDF

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Publication number
EP2689134B1
EP2689134B1 EP12700602.1A EP12700602A EP2689134B1 EP 2689134 B1 EP2689134 B1 EP 2689134B1 EP 12700602 A EP12700602 A EP 12700602A EP 2689134 B1 EP2689134 B1 EP 2689134B1
Authority
EP
European Patent Office
Prior art keywords
ring
pump
metering system
stationary
electric motor
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.)
Active
Application number
EP12700602.1A
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German (de)
English (en)
Other versions
EP2689134A1 (fr
Inventor
Hassan Khameneh
Alexander Hahn
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.)
Ebm Papst St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen GmbH and Co KG
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Publication of EP2689134A1 publication Critical patent/EP2689134A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0063—Special features particularities of the flexible members bell-shaped flexible members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/14—Machines, pumps, or pumping installations having flexible working members having peristaltic action having plate-like flexible members
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/04—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for reversible machines or pumps
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
    • 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
    • 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
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0065—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
    • 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
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C5/00—Rotary-piston machines or pumps with the working-chamber walls at least partly resiliently deformable
    • 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
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1083—Urea
    • 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
    • F04C2220/00—Application
    • F04C2220/24—Application for metering throughflow
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts

Definitions

  • the invention relates to a metering system for metering a liquid.
  • urea solution is a chemically aggressive and very fluid medium, which tends to crystallize
  • special pumps are used to promote it, in which the urea solution does not come into contact with the drive units of the metering pump.
  • the pumping room is z. B. separated by a membrane or other flexible part.
  • the pump runs continuously and builds a pressure of z. B. 5 bar.
  • the urea In the pipes and systems is the urea. If, after the vehicle is parked, the ambient temperature falls below freezing, the system will freeze completely. Since not all components can withstand freezing, the urea solution must be pumped back into a reservoir after the vehicle has been parked. In known systems, this is done by means of a 4/2-way valve, which reverses the conveying direction.
  • the US Pat. No. 4,332,534 shows a diaphragm pump with a drive motor.
  • An annular diaphragm is urged by a pressure member against an inner surface of the housing, the pressure member having a rolling piston which is orbitingly driven by an eccentric drive.
  • a housing has an annular member, and an annular membrane made of an elastomer is provided in the housing.
  • the annular membrane is secured to the housing via a clamping member of the diaphragm, with the clamping member extending radially outward.
  • the pump has an annular working space defined between the inner surface of the pump housing and the outer surface of the annular diaphragm. During a movement of the eccentric drive, the annular membrane is orbiting pressed against the inner surface of the motor housing, and thereby a fluid is displaced through the working space.
  • the inlet opening and the outlet opening are separated by the clamping member.
  • the US 2 544 628 A shows a peristaltic pump with a T-shaped stator ring and a Y-shaped pumping element of rubber or other elastic material.
  • An eccentric is provided which moves the pumping element to deliver fluid from an inlet to an outlet.
  • the inlet and the outlet are separated by a blow-by barrier.
  • the blow-by barrier is formed by a projection of the pumping element, which engages in a notch of the stator ring.
  • the US Pat. No. 3,408,947 shows a diaphragm pump with a substantially annular pumping chamber, which is formed between a housing and a flexible membrane.
  • An eccentric compression member cyclically and circumferentially expands the diaphragm outwardly against the housing to deliver fluid through the annular pumping chamber.
  • the pump can be powered by a motor.
  • the membrane is anchored between the inlet and the outlet by means of an anchor member with the pump body.
  • the anchor member carries at one end a plate which is injected into the membrane as an insert, it extends through an opening in the pump housing, and it is screwed at an opposite end via a nut to the pump housing, so that the membrane is drawn towards the pump housing and the pumping chamber is thereby sealed in the region of the anchor member.
  • Rotation of the drive shaft causes rotation of the eccentric shaft, and thereby the center of the compression member is moved along an orbit.
  • the pressure of the compression member against the membrane continuously changes, and this leads to a promotion of the fluid from the inlet to the outlet.
  • this object is achieved by the subject matter of claim 1. It thus succeeds to provide a dosing system which has a very compact structure, and which sucks in one direction of rotation of the electric motor, the liquid to be dosed from the reservoir and the consumer transported, and in the other Direction of rotation sucks this liquid from the lines of the system and transported back to the reservoir.
  • Fig. 1 shows a three-dimensional view of a preferred embodiment of a metering system 30, such as is used to inject a urea solution as needed in the exhaust stream of a diesel engine.
  • the metering system has to drive a multiphase brushless external rotor motor 32 whose speed behavior can be controlled by means of a PWM control signal, such as from the EP 1 413 045 B1 is known.
  • a PWM control signal such as from the EP 1 413 045 B1 is known.
  • This makes it possible to control the rotational speed and direction of rotation of the engine according to the speed and power requirements of the vehicle on which the dosing system 30 is located located.
  • the elements for this are determined by the manufacturer of the engine control according to the needs of the respective vehicle and can vary greatly depending on the type of vehicle (car, truck, airplane, helicopter, ship, etc.). It is an advantage of the present invention that the dosing system 30 is suitable for very different applications.
  • the motor 32 has drive electronics, eg, a three-phase inverter. This electronics in turn is controlled by an arrangement which serves to decode the duty cycle pwm of a PWM signal which is supplied via a line and thereby to control the motor in terms of direction of rotation and speed. If the duty cycle is referred to as pwm, the following assignments result as a non-binding example: pwm operating condition 0% to 5% not allowed 95% to 100% not allowed 5% to 85% Dosing.
  • FIG EP 1 413 045 B1 An example of a corresponding decoder circuit is described in detail in FIG EP 1 413 045 B1 whose contents are referred to avoid length.
  • all known circuits can be used to change the speed of an electric motor.
  • Fig. 1 shows an example of a simple mechanical structure of a dosing system 30, which is naturally suitable for a variety of applications, including in the pharmaceutical industry and in the production of food, or in breweries, to name just a few examples.
  • the system 30 here has a base 40 on which a first support 42 is arranged on the right, which carries a bearing element 44, which is shown here as a ball bearing.
  • a second carrier 46 is arranged, which according to Fig. 3 a bearing member 48 carries, which is also shown as a ball bearing.
  • the bearing elements 44, 48 are arranged so that they are aligned with each other.
  • a shaft 50 is mounted, on which between the bearing elements 44, 48 an eccentric bushing 52 is attached, which also serves as a spacer between the bearing elements 44, 48.
  • the bush 52 serves to drive a pump 53, which is thus arranged between the bearing supports 42 and 46.
  • the inner ring 54 of an eccentric bearing 56 is fixed, the outer ring 58 is fixed on the inside of a ring 60 which serves as a support for a pumping ring 62.
  • the pumping ring 62 is made of a suitable synthetic rubber (elastomer) and is fixed by plastic spraying in an annular groove 64 of the ring 60 so that it follows the movements of the ring 60.
  • This can e.g. be made of steel, nickel or bronze.
  • PEDM polyethylene-diene monomer
  • the pumping ring 62 is surrounded on its outer side by a stationary ring 70, which according to Fig. 4 is connected by means of screws 84 to the base 40 and has a T-shaped cross-section, namely a, parallel to the axis of rotation 74 of the metering edge portion 76, and a perpendicular to the axis of rotation 74 extending holding portion 78, whose radially inner edge is designated 80.
  • the stationary ring 70 is widened in its lower portion and connected by two screws 84 with the base portion 40.
  • the stationary ring 70 is thus in the assembled state between the carriers 42, 46, ie the bearings 44, 48 are arranged close to each other and can therefore serve as a bearing for the entire metering system 30.
  • a support tube 90 is provided, through which the shaft 50 extends, see. Fig. 3 , The shaft 50 is thus supported only by the bearings 44 and 48.
  • the left end of the cup-shaped magnetic yoke 92 of the rotor 94 of the motor 32 is attached.
  • a magnetic ring 96 On the inside of the yoke 92 is a magnetic ring 96, which is separated by an air gap 98 from the inner stator 100 of the motor 32.
  • the inner stator 100 is mounted on the outside of the support tube 90.
  • the motor 32 also has a printed circuit board 102 on which electronic components of the motor 32 are located.
  • the printed circuit board 102 is connected to a plug 106 via a cable 104.
  • the motor 32 is powered by the cable 104, usually with DC power from a battery, and the cable 104 also has a control line which controls the speed and direction of rotation of the motor 32.
  • a great advantage of a brushless motor, especially on a vehicle, is the high efficiency that can be achieved with such an arrangement.
  • the motor 32 drives via the shaft 50 to the eccentric bushing 52, and this puts the eccentric 54 in an eccentric movement, so that the ring 60 is also placed in this eccentric movement.
  • the pumping chamber 120 constantly changes its shape and thereby transports the dosing fluid, which is located in the pumping chamber 120, from an inlet to an outlet.
  • two ports 122, 124 are provided at a suitable location, which are connected to the sections of the pumping chamber 120 there, cf. Fig. 5 ,
  • the pump ring 62 has lateral extensions or flanges 142, 144 which extend along the flanks 146, 148 of the holding part 78 and are pressed by pressing plates 151, 152 against these flanks, so that the pumping chamber 120 against the holding part 78 held (fixed ) and sealed, cf. Fig. 8 , At the transition from the edge 80 to the flanks 146, 148 of the holding portion 78 each have a bead-like widening 145, 145 ', which there further improves the seal.
  • the pressure plates 146, 148 are by screws 150, one of which in Fig. 6 is shown, pressed against each other.
  • the pumping chamber 120 which in one embodiment has a maximum height of less than one millimeter, is thus connected to the outside world only via the ports 122, 124 and is otherwise hermetically sealed.
  • the 10A to 10J serve to explain the mode of action.
  • the reference numerals are the same as in FIGS Fig. 1 to 9 , However, the ring 60 to which the pump ring 62 is attached is not shown separately.
  • a position indicator 170 is shown in each figure, indicating the position of the maximum of the eccentric bushing 52 in a clockwise rotation, as follows: Fig. 10A 12 o'clock Fig. 10B 1:30 Fig. 10C 3 o'clock Fig. 10D 4:30 Fig. 10E 6 o'clock Fig. 10F 7:30 a.m Fig. 10G 9 clock Fig. 10H 10.30 am Fig. 10J 12 o'clock
  • the port 122 becomes the suction port
  • the port 124 becomes the pressure port, which is not shown because it is simply a reflection of the 10A to 10J equivalent.
  • the metering system 30 described is very easy to maintain because the pump 53 can be easily replaced. - Naturally, many modifications and modifications are possible within the scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (12)

  1. Système de dosage conçu pour doser un liquide, lequel système de dosage (30) comprend :
    un moteur électrique (32) affecté au réglage de la dose souhaitée, par variation de la vitesse angulaire dudit moteur électrique ;
    un entraînement à excentrique (52, 56), pouvant être mené par ce moteur électrique (32) et destiné à une pompe (53) présentant deux directions de refoulement ;
    une bague fixe (70) ;
    un anneau de pompage (62) en un matériau élastomère,
    lequel anneau de pompage (62) est agencé avec verrouillage rotatif par rapport à ladite bague fixe (70) ;
    la bague fixe (70) occupant, par rapport à l'anneau de pompage (62) et à l'entraînement à excentrique (52, 56), une position propre à donner naissance, entre ladite bague fixe (70) et ledit anneau de pompage (62), à une chambre de pompage (120) qui s'étend dans la direction périphérique, observée en coupe tracée perpendiculairement à l'axe de rotation (74) de la pompe (53), et dont la forme varie lors de la rotation du moteur électrique (32), de manière que le liquide à doser soit refoulé à travers ladite chambre de pompage (120), une garniture d'étanchement (142) stationnaire étant prévue, dans cette chambre de pompage (120), entre le raccord d'aspiration (124 ; 122) considéré et le raccord de pression (122 ; 124) considéré,
    sachant que l'anneau de pompage (62) présente, dans la région située entre ledit raccord d'aspiration (124 ; 122) considéré et ledit raccord de pression (122 ; 124) considéré, un évidement (141) traversé par une partie de retenue (140) qui presse vers l'extérieur, contre la bague fixe (70), une zone (142) dudit anneau de pompage (62) située dans cette région et qui instaure par conséquent, dans cette zone, une étanchéité permanente dans ladite chambre de pompage (120), et
    sachant que ladite partie de retenue (140) est guidée, par l'intermédiaire d'au moins deux évidements (125), dans un système stationnaire (151, 152) de la pompe (53) et interdit de la sorte, en service, une rotation dudit anneau de pompage (62) par rapport à cette partie stationnaire.
  2. Système de dosage selon la revendication 1, dans lequel la partie (142) de l'anneau de pompage (62), pressée vers l'extérieur par la partie de retenue (140), sépare une chambre d'aspiration, située sur l'un de ses côtés, d'avec une chambre de pression située sur son autre côté en observant dans la direction périphérique.
  3. Système de dosage selon la revendication 1 ou 2, dans lequel l'anneau de pompage (62) est relié sur sa face intérieure radiale, par une liaison en matière plastique injectée, à une bague métallique (60) qui, à son tour, est en liaison de transmission avec l'entraînement à excentrique (56), notamment par l'intermédiaire d'un palier.
  4. Système de dosage selon l'une des revendications précédentes, dans lequel l'anneau de pompage (62) est relié par zones à la bague fixe (70), sur sa face extérieure radiale, en formant la chambre de pompage (120) s'étendant dans la direction périphérique entre ladite bague fixe (70) et ledit anneau de pompage (62).
  5. Système de dosage selon la revendication 4, dans lequel l'anneau de pompage (62) comporte des épaulements (142, 144) s'étendant le long des flancs (146, 148) de la bague fixe (70) ; et dans lequel sont prévues des pièces de pression (151, 152) qui pressent lesdits épaulements (142, 144) contre ces flancs de la bague fixe (70).
  6. Système de dosage selon l'une des revendications précédentes, dans lequel l'entraînement à excentrique, pouvant être mené par le moteur électrique (32), est pourvu d'une douille (52) présentant un pourtour extérieur de réalisation excentrée par rapport à un arbre d'entraînement (50) en liaison de transmission avec cette douille (52).
  7. Système de dosage selon la revendication 6, dans lequel la bague intérieure d'un palier de roulement (56) est disposée sur le pourtour extérieur de la douille d'excentrique (52), la bague extérieure dudit palier étant reliée à une bague métallique (60) reliée, à son tour, à l'anneau de pompage (62) par une liaison en matière plastique injectée.
  8. Système de dosage selon l'une des revendications précédentes, présentant deux supports (42, 46) placés à distance l'un de l'autre et munis d'éléments de portée (44, 48) servant au montage d'un arbre (50),
    sachant qu'un organe de support (90), prévu sur l'un des supports (42, 46), s'étend dans une direction s'éloignant desdits supports (42, 46), organe de support (90) sur lequel est disposé le stator intérieur (100) d'un moteur multiphasé (32) à rotor extérieur, commuté électroniquement, auquel est associé un rotor extérieur (94) relié à une extrémité libre dudit arbre (50), servant à entraîner cet arbre (50) en service et coopérant, en service, avec ledit stator intérieur (100).
  9. Système de dosage selon la revendication 8, dans lequel l'organe de support (90) est réalisé sous la forme d'un tube de support ; et dans lequel l'arbre (50) parcourt ledit tube de support (90).
  10. Système de dosage selon la revendication 8 ou 9, dans lequel la pompe (53), dédiée au liquide à doser, est interposée entre les deux supports de montage (42, 46), l'arbre (50) étant réalisé en vue de mener l'entraînement à excentrique (52, 56) de ladite pompe (53).
  11. Système de dosage selon l'une des revendications 8 à 10, dans lequel la direction de circulation du liquide, par la pompe (53), est déterminée par le sens de rotation du moteur (32) à rotor extérieur.
  12. Système de dosage selon l'une des revendications précédentes, dans lequel le moteur électrique présente un entrefer (98) à action magnétique entre le stator (100) et le rotor (94).
EP12700602.1A 2011-03-19 2012-01-14 Système de dosage Active EP2689134B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011015110A DE102011015110B3 (de) 2011-03-19 2011-03-19 Dosiersystem
PCT/EP2012/000147 WO2012126544A1 (fr) 2011-03-19 2012-01-14 Système de dosage

Publications (2)

Publication Number Publication Date
EP2689134A1 EP2689134A1 (fr) 2014-01-29
EP2689134B1 true EP2689134B1 (fr) 2017-12-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12700602.1A Active EP2689134B1 (fr) 2011-03-19 2012-01-14 Système de dosage

Country Status (5)

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US (1) US9453507B2 (fr)
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CN106103928B (zh) * 2014-03-19 2019-06-04 大陆汽车有限公司 用于输送液体、尤其是用于输送废气净化添加剂的泵
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DE102016117802A1 (de) 2016-09-21 2018-03-22 Ebm-Papst St. Georgen Gmbh & Co. Kg Pumpenvorrichtung
DE102016124170A1 (de) 2016-12-13 2018-06-14 Ebm-Papst St. Georgen Gmbh & Co. Kg Pumpenvorrichtung
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DE102017104400A1 (de) * 2017-03-02 2018-09-06 Qonqave Gmbh Pumpenvorrichtung zu einer Förderung zumindest eines Fördermittels
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US9453507B2 (en) 2016-09-27
WO2012126544A1 (fr) 2012-09-27
DE102011015110B3 (de) 2012-01-26
CN103534484A (zh) 2014-01-22
US20140017094A1 (en) 2014-01-16
EP2689134A1 (fr) 2014-01-29
CN103534484B (zh) 2017-02-15

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