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EP2455615B1 - Pompe - Google Patents

Pompe Download PDF

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Publication number
EP2455615B1
EP2455615B1 EP11187213.1A EP11187213A EP2455615B1 EP 2455615 B1 EP2455615 B1 EP 2455615B1 EP 11187213 A EP11187213 A EP 11187213A EP 2455615 B1 EP2455615 B1 EP 2455615B1
Authority
EP
European Patent Office
Prior art keywords
pump
peripheral
slider
coolant
impeller
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
EP11187213.1A
Other languages
German (de)
English (en)
Other versions
EP2455615A3 (fr
EP2455615A2 (fr
Inventor
Michael Baumann
Günther Beez
Holger Conrad
Oliver Gebhardt
Rüdiger Knauß
Christian Richter
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.)
Mahle International GmbH
Original Assignee
Mahle International 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
Priority claimed from DE102010044167A external-priority patent/DE102010044167A1/de
Priority claimed from DE102011079897A external-priority patent/DE102011079897A1/de
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2455615A2 publication Critical patent/EP2455615A2/fr
Publication of EP2455615A3 publication Critical patent/EP2455615A3/fr
Application granted granted Critical
Publication of EP2455615B1 publication Critical patent/EP2455615B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant 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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/60—Control system actuates means
    • F05D2270/64—Hydraulic actuators

Definitions

  • the present invention relates to a pump, in particular a coolant pump in a motor vehicle, with an impeller arranged on a pump shaft.
  • Coolant pumps are usually used in motor vehicles to control a coolant flow for cooling an internal combustion engine, the delivery rate of such coolant pumps being regulated as a function of the cooling requirement.
  • a regulation or control of the delivery rate of the coolant pump is usually carried out via electromagnetically controllable valves or couplings or other types of valves.
  • a coolant pump with an arranged on a pump shaft impeller and an adjustable slide known, which can be moved over the impeller and thereby regulates a delivery rate of the pump. Also disposed on the pump shaft is a secondary pump for establishing a slider controlling fluid pressure.
  • a controllable coolant pump with a valve device is known, which is arranged between a pressure side and a suction side and which serves for actuating a control slide.
  • the present invention is concerned with the problem of providing for a pump, in particular for a coolant pump, an improved embodiment which is particularly compact.
  • the present invention is based on the general idea, in a pump, in particular in a coolant pump in a motor vehicle, with an impeller arranged on a pump shaft to provide an adjustable slide which can be moved over the impeller or alternatively to move the impeller and thereby a delivery rate to regulate the pump.
  • a secondary pump is now additionally arranged on the pump shaft of the pump, for example in the form of a positive displacement pump or a peripheral pump, which serves to build up a fluid pressure controlling the slide.
  • a valve device is arranged which separates the suction side and the pressure side from each other and thereby interconnects and thereby the fluid pressure for adjusting the slide, which can be built up by the secondary pump or the displacement pump / peripheral pump.
  • the pump according to the invention can be used to adjust the pumping rate of the pump regulating overpressure, the rotational energy of the pump shaft of the pump, as this not only the impeller, that is the impeller, for the promotion of, for example, carries coolant, but at the same time a corresponding secondary pump in Form of a positive displacement pump / peripheral pump with a rotor set, which builds up the fluid pressure with which the slide is adjusted.
  • the suction side can be separated from the pressure side of the positive displacement pump / peripheral pump by the valve device positioned according to the invention, so that the Positive displacement pump builds up a pressure that moves the slide in its closed position.
  • the valve device can be successively opened, whereby an increasing connection between the pressure side and the suction side of the positive displacement pump / peripheral pump takes place and thereby increasingly decreases the fluid pressure generated by the positive displacement pump / peripheral pump.
  • valve device also works like a pressure relief valve for the peripheral pump or acts to prevent damage to the pump. Due to the decrease in the fluid pressure, the slider controlled via the fluid pressure of the positive displacement pump / peripheral pump shifts into its open position, whereby the pump wheel of the pump progressively pumps more fluid, that is, increasingly more coolant, thereby satisfying the ever-increasing cooling requirement of the internal combustion engine.
  • the rotational energy of the pump shaft can be used at the same time to build a slider and thus the flow rate of the pump controlling fluid pressure, so that more expensive and expensive adjusting devices can be omitted.
  • the secondary pump / positive displacement pump / peripheral pump has a self-regulating pressure limiting device.
  • a self-regulating pressure limiting device closes from a certain of the secondary pump / positive displacement pump / peripheral pump fluid pressure, the slider, whereupon the delivery rate of the pump is reduced.
  • Such a pressure limiting device serves in particular to avoid damage, which can arise at too high by the positive displacement pump or the pump itself built pressures on these themselves or on aggregates associated with it.
  • Such a pressure limiting device may, for example, at least two radially adjustable arranged on the positive displacement vane, which are biased by means of a respective spring in a promotional position against a stator.
  • the two vanes are therefore in their extended and thus conveying position due to the springs acting thereon, whereas the vanes are pressed radially inwardly against the respective spring force as the fluid pressure inside the positive displacement pump increases a gap is formed between it and an external stator, through which the fluid to be delivered flows and through which the fluid outlet pressure prevailing inside the positive-displacement pump can be limited.
  • a pump 1 which may be formed, for example, as a coolant pump in a motor vehicle, a pump shaft 2, on which rotationally fixed an impeller 3, also called pump impeller, is arranged.
  • the impeller 3 promotes by a rotational movement about an axis of the pump shaft 2, a fluid, for example. Coolant.
  • the pump 1 according to the invention has an adjustable slide 4, which can be pushed like a sleeve over the impeller 3 and thereby more or less closes an outlet 5 and regulates a delivery rate of the pump 1.
  • the slider 4 is displaceable in the axial direction of the pump 1.
  • a positive displacement pump 6 is also disposed on the pump shaft 2 .
  • valve device 7 which separates a suction side and a pressure side of the positive displacement pump 6 from each other or together and thereby controls the build-up of the positive displacement pump 6 fluid pressure for adjusting the slide 4.
  • the valve device 7 can not only have two extreme positions (open and closed), but also any intermediate positions.
  • the positive displacement pump 6 has a self-regulating pressure limiting device 8 with two radially adjustable arranged on the positive displacement pump 6 wings 9 and 9 ', which are biased by a respective spring 10 and 10' in a promotional position against a stator 11.
  • the wings 9 and 9 ' are in response to the delivery pressure of the positive displacement pump 6 radially inward and thus adjustable in a no or less strong promotional position, the adjustment of the required fluid pressure of the spring stiffness of the springs 10 and 10' depend.
  • the pump 1 functions as a coolant pump in an internal combustion engine as follows: during a cold start phase of the internal combustion engine, in which the heating of the same as quickly as possible takes place is desired, the pump 1 should promote no coolant to the engine and thereby shorten the cold start phase. During the cold start phase thus separates the valve means 7, the pressure side of the suction side of the positive displacement pump 6, whereby it builds up a fluid pressure, which then leads to the adjustment of the slide 4 in its closed position. The fluid pressure built up by the positive displacement pump 6 counteracts a spring 12 which is part of a safety device 13.
  • the valve device 7 opens a fluidic connection between the suction side and the pressure side of the positive displacement pump 6, so that the fluid pressure generated by this decreases, whereby the force exerted by the spring 12 actuating force is increasingly greater compared to that exerted by the fluid pressure and opposite force. This causes a slow adjustment of the slide 4 in its open position, whereby the pump 1 promotes coolant to the engine and thereby cools it.
  • the spring 12 is part of a safety device 13, which adjusts the slide 4 in case of failure of the positive displacement pump 6 or the valve device 7 such that the pump 1 provides the maximum delivery rate and thus the maximum cooling capacity.
  • the pump 1 With the pump 1 according to the invention, it is possible to use the rotational energy of the pump shaft 2 of the pump 1 at the same time for generating a fluid pressure adjusting the slide 4 by means of the positive displacement pump 6, so that separate pressure-generating means can be dispensed with.
  • the valve device 7 is also a simple but particularly effective control of the slide 4 on the prevailing in the positive displacement pump 6 fluid pressure possible.
  • the provided in the positive displacement pump 6 pressure limiting device 8 also ensures that no, the positive displacement pump 6 impairing or even damaging fluid pressure can be built within the same. Due to the springs 10 and 10 'while the pressure limiting device 8 operates independently and requires no additional control or regulation.
  • FIGS. 5 and 6 is on the pump shaft 2 a Peripheralpumpenrad 115 of a peripheral pump 116 for the construction of a slider 4 controlling, that is adjusting, fluid pressure.
  • a valve device 7 is provided, which separates a suction side and a pressure side of the peripheral pump 116 from each other or to each other and thereby controls the accumulatedbar of the peripheral pump 116 fluid pressure for adjusting the slide 4.
  • the valve device 7 may be formed, for example, as an electrically actuated solenoid valve (solenoid valve).
  • the valve device 7 can of course not only two Extreme (open and closed), but also any intermediate positions.
  • the pump 1 functions as a coolant pump in an internal combustion engine as follows: During the cold start phase, the valve device 7 separates the pressure side from the suction side of the peripheral pump 116, whereby it builds up a fluid pressure, which then leads to the adjustment of the slide 4 in its closed position. The fluid pressure built up by the peripheral pump 116 counteracts a spring 118, which is part of a safety device. Due to the fact that the slide 4 closes the outlet of the impeller 3, no coolant is conveyed to the internal combustion engine by the pump 1, as a result of which it is heated more quickly to operating temperature and its cold start phase is shortened. This is particularly advantageous with regard to fuel consumption and with regard to nitrogen oxide emissions.
  • valve device 7 With increasing heating of the internal combustion engine, the valve device 7 opens a fluidic connection between the suction side and the pressure side of the peripheral pump 116, so that the fluid pressure generated by this decreases. This causes a slow adjustment of the slide 4 in its open position, whereby the pump 1 promotes coolant to the engine and thereby cools it.
  • the spring 118 is part of a safety device that adjusts the slide 4 in case of failure of the peripheral pump 116 or the valve device 7 such that the pump 1 provides the maximum delivery rate and thus the maximum cooling capacity.
  • valve device 7 may comprise a valve plate 119 biased by means of a spring 118 ', the spring 118' biasing the valve plate 119 into an open position when the valve device 7 is not actuated.
  • the impeller 3 and the peripheral impeller 115 are preferably in one common fluid circuit, in particular in a common cooling circuit, integrated. In this case, the fluid delivered by the peripheral pump 116 and the fluid delivered by the pump 1 is coolant.
  • the pump 1 With the pump 1 according to the invention it is possible to use the rotational energy of the pump shaft 2 of the pump 1 at the same time for generating a fluid pressure adjusting the slide 4 by means of the peripheral pump 116, so that separate pressure-generating devices can be dispensed with.
  • the valve device 7 is also a simple but particularly effective control of the slide 4 on the prevailing in the peripheral pump 116 fluid pressure possible. Of particular advantage is beyond that the thus designed pump 1 compact builds.
  • the valve device 7 may be an electronically / electrically controlled solenoid valve or another controlled valve.
  • the specifications of the controller can be set in the engine electronics as a map. This means that, depending on the operating state of the engine, the valve device 7 is actuated and thereby actuated.
  • Fig. 7 to 9 is another possible embodiment of the pump 1 according to the invention shown, in which the secondary pump is not explicitly drawn.
  • This is located in the secondary pump housing 200 and can be configured in any form, for example as positive displacement pump 6 or peripheral pump 116.
  • a fluid pressure is built by the secondary pump, such as an oil pump, for adjusting the slide 4 via the impeller 3 of the pump 1 is used.
  • the pump 1 has an annular piston 201, which is adjustable in an annular space 202 and coupled to the slide 4.
  • the annular piston 201 is connected via an axial seal 203 in the axial direction and over a Radial seal 204 sealed in the radial direction.
  • the valve device 7 takes over the control of the adjusting movement of the slide 4.
  • a spring 205 is provided, which in case of failure of the secondary pump, for example the peripheral pump 116, or the valve device 7, the slide 4 adjusted such that the pump 1, the maximum delivery rate and thus provides the maximum cooling capacity.
  • the shaft 2 is sealed by a seal 206 relative to the secondary pump housing 200 and mounted via a bearing 207, which may be arranged in the secondary pump housing 200.
  • annular piston 201 By the annular piston 201, a particularly uniform adjustment of the slide 4 and a space-optimized solution can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Claims (13)

  1. Pompe (1), en particulier pompe à liquide de refroidissement dans un véhicule automobile, avec
    - une roue mobile (3, 113) disposée sur un arbre de pompe (2),
    - un coulisseau (4) pouvant être ajusté, qui peut être coulissé au-dessus de la roue mobile (3, 113) et qui régule ce faisant une vitesse de refoulement de la pompe (1),
    - une pompe secondaire également disposée sur l'arbre de pompe (2), de préférence une pompe volumétrique (6)/une pompe tourbillonnaire (116), servant à établir une pression de fluide commandant le coulisseau (4),
    caractérisée en ce que
    - un dispositif de soupape (7) est prévu, lequel sépare l'un de l'autre ou relie un côté d'aspiration et un côté de pression de la pompe secondaire, de préférence de la pompe volumétrique (6)/de la pompe tourbillonnaire (116) et commande ce faisant la pression de fluide pouvant être établie par la pompe secondaire servant à ajuster le coulisseau (4),
    - la pompe secondaire/la pompe volumétrique (6) présente un dispositif de limitation de pression (8) à régulation automatique.
  2. Pompe selon la revendication 1,
    caractérisée en ce que
    le dispositif de soupape (7) présente une électrovanne pouvant être actionnée de manière électrique.
  3. Pompe selon la revendication 2,
    caractérisée en ce que
    le dispositif de limitation de pression (8) présente au moins deux ailettes (9, 9') disposées de manière à pouvoir être ajustées radialement au niveau de la pompe secondaire/de la pompe volumétrique (6), lesquelles sont précontraintes contre un stator (11) au moyen respectivement d'un ressort (10, 10') dans une position de refoulement.
  4. Pompe selon la revendication 3,
    caractérisée en ce que
    les ailettes (9, 9') peuvent être ajustées vers l'intérieur radialement et ainsi dans une position sans refoulement ou à refoulement moins fort en fonction de la pression de refoulement de la pompe secondaire/de la pompe volumétrique (6).
  5. Pompe selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce que
    le fluide refoulé par la pompe secondaire/la pompe volumétrique/la pompe tourbillonnaire (6, 116) et le fluide refoulé par la pompe (1) est un liquide de refroidissement.
  6. Pompe selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce que
    un dispositif de ressort (118) ou un dispositif de sécurité (13) est prévu, lequel ajuste le coulisseau (4) en cas d'avarie de la pompe secondaire/de la pompe volumétrique/de la pompe tourbillonnaire (6, 116) de telle manière que la pompe (1) fournit la vitesse de refoulement maximale.
  7. Pompe selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le coulisseau (4) pouvant être ajusté est réalisé en tant que douille d'ajustement, qui peut être coulissée dans une direction axiale au-dessus de la roue mobile (3).
  8. Pompe selon la revendication 1,
    caractérisée en ce que
    le dispositif de soupape (7) présente une tête de soupape (119) précontrainte au moyen d'un ressort (118'), dans laquelle le ressort (118') précontraint la tête de soupape (119) dans une position d'ouverture lorsque le dispositif de soupape (7) n'est pas actionné.
  9. Pompe selon la revendication 1 ou 8,
    caractérisée en ce que
    la roue mobile (113) et la roue de pompe tourbillonnaire (115) de la pompe tourbillonnaire (116) sont intégrées dans un circuit de fluide commun.
  10. Pompe selon l'une quelconque des revendications 1 à 9,
    caractérisée en ce que
    la pompe (1) présente un piston annulaire (201), qui peut être ajusté dans un espace annulaire (202) et qui est couplé au coulisseau (4).
  11. Pompe selon la revendication 10,
    caractérisée en ce que
    le piston annulaire (201) est étanchéifié par l'intermédiaire d'un joint d'étanchéité axial (203) dans une direction axiale et par l'intermédiaire d'un joint d'étanchéité radial (204) dans une direction radiale.
  12. Pompe selon la revendication 11,
    caractérisée en ce que
    l'arbre (2) est étanchéifié par rapport à un boîtier de pompe secondaire (200) par l'intermédiaire d'un joint d'étanchéité (206) et/ou est monté au-dessus d'un palier (207), qui est disposé dans le boîtier de pompe secondaire (200).
  13. Pompe selon l'une quelconque des revendications 1 à 12,
    caractérisée en ce que
    la pompe (1) est réalisée en tant que pompe à liquide de refroidissement servant à mettre en circulation un liquide de refroidissement pour un moteur à combustion interne d'un véhicule automobile.
EP11187213.1A 2010-11-19 2011-10-31 Pompe Not-in-force EP2455615B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010044167A DE102010044167A1 (de) 2010-11-19 2010-11-19 Pumpe
DE102011079897A DE102011079897A1 (de) 2011-07-27 2011-07-27 Pumpe

Publications (3)

Publication Number Publication Date
EP2455615A2 EP2455615A2 (fr) 2012-05-23
EP2455615A3 EP2455615A3 (fr) 2014-04-09
EP2455615B1 true EP2455615B1 (fr) 2017-08-16

Family

ID=44862793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11187213.1A Not-in-force EP2455615B1 (fr) 2010-11-19 2011-10-31 Pompe

Country Status (3)

Country Link
EP (1) EP2455615B1 (fr)
KR (1) KR101819750B1 (fr)
CN (1) CN102477996B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011004172B3 (de) * 2011-02-15 2012-03-01 Schwäbische Hüttenwerke Automotive GmbH Kühlmittelpumpe mit verstellbarem Fördervolumen
DE102015119097B4 (de) 2015-11-06 2019-03-21 Pierburg Gmbh Kühlmittelpumpe für eine Verbrennungskraftmaschine
DE102016116636B4 (de) * 2016-09-06 2019-08-14 Pierburg Gmbh Kühlmittelpumpe für den Kfz-Bereich sowie ein Kühlmittelkreislauf für eine Verbrennungskraftmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH508831A (de) * 1969-05-29 1971-06-15 Sulzer Ag Maschine mit gekühlter Stopfbüchse
CN2095951U (zh) * 1990-12-07 1992-02-12 温岭县部渎前溪机械厂 自吸自动水泵
DE19901123A1 (de) * 1999-01-14 2000-07-20 Bosch Gmbh Robert Regelbare Radialpumpe, insbesondere zum Fördern eines Kühlmittels für ein Kraftfahrzeug
DE102008026218B4 (de) * 2008-05-30 2012-04-19 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe
DE102008049204A1 (de) * 2008-09-27 2010-04-01 Man Nutzfahrzeuge Ag Kühlsystem für Fahrzeuge mit flüssigkeitsgekühlter Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN102477996B (zh) 2016-03-30
EP2455615A3 (fr) 2014-04-09
KR101819750B1 (ko) 2018-01-17
KR20120054537A (ko) 2012-05-30
CN102477996A (zh) 2012-05-30
EP2455615A2 (fr) 2012-05-23

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