EP1736669B1 - Pompe de refroidissement réglable - Google Patents

Pompe de refroidissement réglable Download PDF

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Publication number
EP1736669B1
EP1736669B1 EP06010442A EP06010442A EP1736669B1 EP 1736669 B1 EP1736669 B1 EP 1736669B1 EP 06010442 A EP06010442 A EP 06010442A EP 06010442 A EP06010442 A EP 06010442A EP 1736669 B1 EP1736669 B1 EP 1736669B1
Authority
EP
European Patent Office
Prior art keywords
pump
bearing
collar
impeller
sealing
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
EP06010442A
Other languages
German (de)
English (en)
Other versions
EP1736669A3 (fr
EP1736669A2 (fr
Inventor
Günther Beez
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
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP1736669A2 publication Critical patent/EP1736669A2/fr
Publication of EP1736669A3 publication Critical patent/EP1736669A3/fr
Application granted granted Critical
Publication of EP1736669B1 publication Critical patent/EP1736669B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/022—Units comprising pumps and their driving means containing a coupling a coupling allowing slip, e.g. torque converter
    • 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
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of 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
    • F04C15/0003—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
    • 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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more 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
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine

Definitions

  • the invention relates to a controllable coolant pump driven by torque transmission elements for internal combustion engines.
  • crankshaft coolant pumps must therefore always be dimensioned so that they cause sufficient cooling performance even at low speed and high engine load - for example, when driving uphill with trailer.
  • crankshaft coolant pumps Another major drawback of such directly driven by the crankshaft coolant pumps is that they begin immediately in the warm-up phase with the heat dissipation of the motor generated and actually in the warm-up phase also urgently needed in the engine heat.
  • thermocouples used for this speed control generate a dependent of the respective coolant temperature frictional force, slip occurs between the pump shaft and the impeller not only briefly, which inevitably increased wear of the torque transmission surfaces occurs.
  • a hydrostatic clutch with a driving, internally toothed ring gear and an eccentrically mounted, with the ring gear as a gear pump cooperating inner wheel is prescribed, which is controlled by a throttled bypass.
  • the two disc parts of the impeller are connected at cold start by means of a clutch. From a predetermined speed, this clutch opens, which then promotes the pump specifically less coolant at higher speed.
  • the DE 33 29 002 A1 describes, however, a controllable coolant pump with a device for displacement of the impeller as a function of the coolant temperature by means of a thermocouple to reduce with increasing coolant temperature between the radial vanes of the impeller and the pump housing gap and thereby increase the coolant flow rate.
  • the DE 41 42 120 A1 describes a controllable cooling water pump in which the power of the cooling water pump by the variation of the impeller adjacent gap, by means of an axially displaceable ring, can be changed.
  • the drive power of the coolant pump can be varied only slightly at very poor efficiency. Due to the unfavorable design of the suction area, with the mandatory in the suction mouth webs, there is a strong cavitation. In addition, the axial adjusting device requires a large space.
  • the invention is therefore based on the object to develop a driven, controllable coolant pump for internal combustion engines, which does not have the aforementioned disadvantages of the prior art, coolant temperature dependent exact and gentle, can be controlled continuously, it is wear-susceptible and störunan classroom, and high efficiency one optimal, very precisely controlled adjustment of the coolant volume flow to the heat balance of the engine significantly reduces the warm-up phase of the engine, the pollutant emissions as well as simultaneously reduces friction losses and fuel consumption, and with minimal space high functional and operational reliability over the entire Lifetime guaranteed, and is also suitable for retrofitting of existing engine generations.
  • controllable coolant pump with a mounted in a pump bearing in the bearing housing, driven pump shaft, a bearing space from the pump chamber sealing gasket, preferably a mechanical seal and a freely rotatably mounted on a plain bearing of the pump shaft impeller arranged by a arranged on the pump shaft coupling depending on the temperature of the coolant is driven, characterized in that in the impeller a multi-stepped cylindrical interior with sealing collar / s and this / this Dichtbund / s adjacent, an inner toothing similar outer rotor contour is arranged, said on the pump shaft in addition to the sliding bearing for the impeller is rotatably disposed with a / two cylindrical Lagerbund / s and one / two sealing ridge / s eccentric provided, on which is rotatably provided with an external toothed inner rotor, which analo with the outer rotor contour in the impeller g is able to cooperate with the operating principle of a gerotor pump as a clutch,
  • Essential to the invention is in this context also that on the / the bearing collars on one or both sides of the eccentric axially displaceable each one of the respective sealing collar reaching to each associated sealing ridge pressure plate is arranged, which between their respective investment in the sealing web and the sealing collar and a spaced from the respective sealing ridge, arranged on the associated bearing collar pressure surface is slidably mounted / are, wherein on the side facing away from the eccentric of the pressure plate / n each one rotatably mounted in the impeller bimetallic disk is fixed adjacent.
  • overflow grooves are arranged in the working area of the pressure plate (s) in the annular casing of the impeller, which ensure optimum coolant exchange.
  • the speed of the pump impeller approximately corresponds to the input speed of the pump shaft.
  • the bimetallic disc (s) relieves / relieves the pressure plate (s).
  • an abutment disc At the support surface of the seal ring according to the invention is an abutment disc to which a relative movement between the rotating at the speed of the impeller abutment disc and the revolving at the speed of the pump shaft seal ring allows, so that by means of inventive arrangement an axial displacement of the impeller on the pump shaft is avoided.
  • bimetallic disc can be varied depending on the respective coolant temperature due to the inventive arrangement on the pressure plate, the gap width between the pressure plate and the sealing land or the sealing collar, so that increases with increasing gap width, the circulating between the displacement chambers coolant and thereby the driving torque between the pump shaft and impeller sink.
  • the minimum, speed-dependent drag torque between the pump shaft and the impeller can be specified.
  • the solution according to the invention thus enables effective control of the drive torque of the impeller of a driven coolant pump with high efficiency and thereby enables an optimal adaptation of the coolant volume flow to the heat balance of the engine.
  • optimal temperature-dependent adjustable solution is also suitable for retrofitting existing engine generations.
  • FIG. 1 is a design of the controllable coolant pump according to the invention in the front view, with a bearing housing 2 and a pump wheel 5, shown.
  • FIG. 2 now shows this inventively controllable coolant pump after FIG. 1 on average at AA.
  • FIG. 3 To clarify the structure of the coolant pump according to the invention and to better understand the FIG. 2 is in the FIG. 3 Moreover, an exploded view of the controllable coolant pump according to the invention FIG. 1 shown.
  • a driven pump shaft 3 is mounted in a bearing housing 2 while a pump bearing 1 is arranged.
  • a driven pump shaft 3 is mounted in this pump bearing 1.
  • a seal 4 preferably a mechanical seal is arranged between the storage space and the pump chamber.
  • impeller 5 is freely rotatably mounted on a arranged between the pump shaft 3 and the impeller 5 bearing bush 6.
  • Bearing housing side is in the impeller 5 a multiple stepped cylindrical interior with a sealing collar 7 and a sealing collar 7 adjacent this, an internal toothing similar, outer rotor contour 8 is arranged.
  • This pressure plate 13 is slidably mounted between its abutment with the sealing web 10 and seal collar 7 and a pressing surface 14 of the sealing web 10 spaced on the bearing collar 9 rotationally fixed slide ring 17.
  • overflow 19 are arranged for coolant exchange in the annular casing 18 of the impeller.
  • an abutment collar 20 is arranged on the bearing side in the interior of the impeller 5, on which a rotatably arranged in the impeller, the sliding ring 17 is not touching, provided for the displaced coolant with flow holes 21st
  • Bimetallic disc 22 abuts.
  • the bimetallic disc 22 adjacent rotatably disposed a spacer ring 23 to which a provided with overflow holes 24 for the coolant and a pump shaft bore 25 abutment disc 26 is arranged rotationally fixed adjacent.
  • This abutment disc 26 abuts the area adjacent to the pump shaft bore 25 on the support surface 26 of the sliding ring 17 opposite the pressure surface 14, with the abutment disc 26 adjacent to its position securing in the impeller 5 a support ring 27 arranged in the impeller.
  • FIG. 4 shows a section through the impeller 5 according to the invention, the controllable coolant pump according to FIG. 2 at BB with arranged in the pump 5, an internal toothing similar outer rotor contour 8 and the rotatably mounted on the pump shaft 3 arranged eccentric 11th
  • eccentric 11 On this eccentric 11 a rotatably provided with an external toothing inner rotor 12 is rotatably able to interact with the outer rotor contour 8 analogous to the operating principle of a gerotor.
  • the filled with coolant displacement chambers 31 are formed, which can be "variably sealed” according to the invention of the pressure plate by means of the bimetallic disc and an effective control of the drive torque of the impeller 5 of the driven coolant pump with high efficiency, and so allow an optimal adjustment of the coolant flow rate to the heat balance of the engine.
  • FIG. 5 now shows the controllable coolant pump according to the invention FIG. 2 with a hot coolant from the bimetallic disc 22 according to the invention until it rests against sealing collar 7 and sealing ridge 10 pressure plate 13th
  • this pressure plate 13 which is thus pressed, lies tight against the inner rotor 12 and thus prevents the fluid exchange between the two filled with coolant and formed by the outer rotor contour 8 and the outer toothing of the inner rotor 12 displacement chambers.
  • the rotational speed of the impeller 5 approximately corresponds to the drive rotational speed of the pump shaft 3.
  • FIG. 6 is the controllable coolant pump according to the invention after FIG. 2 with completely relieved of the bimetallic disc 22 Anduckplatte 13.
  • Coolant is pressed from one into the other displacement chamber via the opening gap between the sealing web 10, side wall of the inner rotor 12 and sealing collar 7, and the pressure plate 13 is displaced until it abuts the bimetal disk 22 again.
  • the inner rotor 12 runs in the outer rotor contour 8 of the impeller 5.
  • the gap width between the pressure plate 13, the sealing web 10, the side wall of the inner rotor 12 and the sealing collar 7 as a function of the coolant temperature exactly and smoothly steplessly controlled by means of the bimetallic disc 22.
  • the solution according to the invention thus ensures an effective control of the drive torque of the impeller 5 of the driven coolant pump with high efficiency and thus an optimal adaptation of the coolant volume flow to the heat balance of the engine.
  • a circulation groove 30 is arranged both in the bearing bore 28 of the impeller 5 and in the bearing seat 29 of the eccentric 11.

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)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Particle Accelerators (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Claims (4)

  1. Pompe de milieu de refroidissement réglable comportant un palier de pompe (1) et un logement de palier (2), avec un arbre de pompe (3) entraîné, positionné dans le logement de palier (2) dans le palier de pompe (1), un joint d'étanchéité (4) isolant l'espace de palier de la chambre de pompe, de préférence un joint mécanique et une roue de pompe (5) disposée de manière rotative librement sur un palier lisse de l'arbre de pompe (3), laquelle est entraînée par un couplage disposé sur l'arbre de pompe (3) en fonction de la température du milieu de refroidissement, dans laquelle dans la roue de pompe (5) un espace intérieur cylindrique à plusieurs étages est disposé avec un/des collet(s) d'étanchéité (7) et un contour de rotor extérieur (8) identique à une denture intérieure, adjacent à ce/ces collet(s) d'étanchéité (7), dans lequel sur l'arbre de pompe (3) à côté du palier lisse destiné à la roue de pompe (5), un excentrique (11) pourvu de un/deux collet(s) de palier cylindrique (9) et un/deux gradin(s) d'étanchéité (10) est disposé de manière solidaire en rotation, sur lequel est disposé rotativement un rotor intérieur (12) pourvu d'une denture extérieure, qui peut coopérer avec le contour de rotor extérieur (8) dans la roue de pompe (5) de manière analogue au principe de fonctionnement d'une pompe Gerotor comme embrayage, caractérisée en ce que sur le/les collet(s) de palier (8) une plaque de pressage (13) déplaçable axialement d'un ou des deux côtés de l'excentrique (11), respectivement une plaque de pressage allant du collet d'étanchéité (7) respectif jusqu'au gradin d'étanchéité (10) respectivement coordonné est disposée, laquelle entre son positionnement respectif sur le gradin d'étanchéité (10) et le collet d'étanchéité (7) et une surface de pressage (14) disposée à distance du gradin d'étanchéité respectivement (10), sur le collet de palier (9) coordonné est/sont positionnés de manière déplaçable, dans laquelle sur le côté se détournant de l'excentrique (11) de la/des plaques(s) de pressage (13) respectivement un disque de bimétal (22) disposé de manière solidaire en rotation dans la roue de pompe (5) est fixé en adjacence, et dans laquelle dans la région de travail de la/des plaques(s) de pressage (13) dans la gaine annulaire (18) de la roue de pompe (5), des rainures de débordement (19) sont disposées.
  2. Pompe de milieu de refroidissement réglable selon la revendication 1, caractérisée en ce que la plaque de pressage (13) disposée de manière déplaçable axialement sur le collet de palier (8), allant du gradin d'étanchéité (10) au collier d'étanchéité (7) est positionnée de manière déplaçable entre son positionnement sur le gradin d'étanchéité (10) et le collet d'étanchéité (7) et une plaque de pressage (14) d'une bague coulissante (17) pourvue d'un collet d'appui (16) venant reposer sur le côté frontal (15) du collet de palier (9), espacée du gradin d'étanchéité (10), disposée de manière solidaire en rotation sur le collet de palier (9), dans laquelle dans cette zone de mouvement de la plaque de pressage (13) des rainures de débordement (19) sont disposées dans une gaine annulaire (18) de la roue de pompe (5), et du côté du palier à côté de ces rainures de débordement (19) un collier de positionnement (20) est disposé dans l'espace intérieur de la roue de pompe (5), sur lequel le disque de bimétal (22) disposé de manière solidaire en rotation dans la roue de pompe (5), ne contactant pas la bague coulissante (17), pourvu d'alésage d'écoulement (21) vient reposer.
  3. Pompe de milieu de refroidissement réglable selon la revendication 2, caractérisée en ce que dans la roue de pompe (5), à proximité du disque de bimétal (22) un anneau d'écartement (23) est disposé de manière solidaire en rotation, sur lequel un disque d'aboutement (26) pourvu d'alésages de débordement (24) et d'un alésage d'arbre de pompe (25) est disposé de manière solidaire en rotation dans la roue de pompe (5), qui vient reposer par une région adjacente à l'alésage d'arbre de pompe (25) sur une surface d'appui opposée à une des surfaces de pression (14) de la bague coulissante (17) disposée de manière solidaire en rotation sur le collet de palier (9) de l'excentrique (11), dans laquelle une bague d'appui (27) est disposé dans la roue de pompe (5) à proximité du disque d'aboutement (26).
  4. Pompe de milieu de refroidissement réglable selon une des revendications 1 à 3, caractérisée en ce que tant dans un alésage de palier (28) de la roue de pompe (5) que dans une chaise de palier (29) de l'excentrique (11), une rainure de circulation (30) est disposée.
EP06010442A 2005-06-21 2006-05-20 Pompe de refroidissement réglable Not-in-force EP1736669B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005028598A DE102005028598B3 (de) 2005-06-21 2005-06-21 Regelbare Kühlmittelpumpe

Publications (3)

Publication Number Publication Date
EP1736669A2 EP1736669A2 (fr) 2006-12-27
EP1736669A3 EP1736669A3 (fr) 2009-08-12
EP1736669B1 true EP1736669B1 (fr) 2010-12-15

Family

ID=36997591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06010442A Not-in-force EP1736669B1 (fr) 2005-06-21 2006-05-20 Pompe de refroidissement réglable

Country Status (3)

Country Link
EP (1) EP1736669B1 (fr)
AT (1) ATE491887T1 (fr)
DE (2) DE102005028598B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005108A1 (de) * 2011-03-04 2012-09-06 Mahle International Gmbh Gleitringdichtung

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DE102006048482A1 (de) * 2006-10-11 2008-04-17 Behr Gmbh & Co. Kg Koppelungsvorrichtung für eine Kühlmittelpumpe, Verfahren zum Koppeln, Pumpe zum Kühlmittelpumpen
DE102010020118A1 (de) * 2010-05-10 2011-11-10 Mahle International Gmbh Kupplungseinrichtung
DE102010026132A1 (de) 2010-07-05 2012-01-05 Mahle International Gmbh Laufrad und Fluidpumpe
IT1400958B1 (it) * 2010-07-13 2013-07-05 Ind Saleri Italo Spa Pompa di raffreddamento con innesto.
DE102010032540B4 (de) * 2010-07-28 2019-03-21 Mahle International Gmbh Kühlmittelpumpe
DE102012213985A1 (de) 2012-08-07 2014-02-13 Mahle International Gmbh Pumpeneinrichtung
CN114165935B (zh) * 2021-12-13 2023-06-09 恩德特机械（苏州）有限公司 一种基于智能化控制的螺杆式冷水机组

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005108A1 (de) * 2011-03-04 2012-09-06 Mahle International Gmbh Gleitringdichtung

Also Published As

Publication number Publication date
DE102005028598B3 (de) 2006-10-05
EP1736669A3 (fr) 2009-08-12
EP1736669A2 (fr) 2006-12-27
DE502006008492D1 (de) 2011-01-27
ATE491887T1 (de) 2011-01-15

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