EP3063412A1 - Pompe à réfrigérant réglable - Google Patents

Pompe à réfrigérant réglable

Info

Publication number
EP3063412A1
EP3063412A1 EP14809754.6A EP14809754A EP3063412A1 EP 3063412 A1 EP3063412 A1 EP 3063412A1 EP 14809754 A EP14809754 A EP 14809754A EP 3063412 A1 EP3063412 A1 EP 3063412A1
Authority
EP
European Patent Office
Prior art keywords
pump
shaft
spring
impeller
wall plate
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.)
Withdrawn
Application number
EP14809754.6A
Other languages
German (de)
English (en)
Inventor
Franz Pawellek
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.)
Nidec GPM GmbH
Original Assignee
Nidec GPM 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 Nidec GPM GmbH filed Critical Nidec GPM GmbH
Publication of EP3063412A1 publication Critical patent/EP3063412A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • 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
    • F01P11/12—Filtering, cooling, or silencing cooling-air
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • 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
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
    • 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
    • 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
    • F04D15/0077—Safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet
    • 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
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • 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
    • F01P5/12—Pump-driving arrangements
    • 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 invention relates to a controllable coolant pump, in particular for use in internal combustion engines.
  • the cooling capacity of the coolant pumps must imperatively be adapted to these increasing engine outputs, so that the associated coolant pump must apply a correspondingly high flow rate already in the lower engine speed range for the engines with increasing engine power, and must therefore be dimensioned large, which inevitably increases the space requirement in the engine Engine compartment required.
  • a wide variety of pressure control functions are used. But their use again requires a further space in the engine compartment and also often for the operation of auxiliary power, via supply lines, which also require even more space, must be provided.
  • DE 881 306 B Another possibility for realizing a pressure regulating function has been described in DE 881 306 B.
  • This is a centrifugal pump with hydraulically operated control slide.
  • the actuating pressure used is the delivery pressure of the pump.
  • a spring causes the slider to be closed in the normal position / initial position.
  • the displacement piston is acted upon in this solution on both sides with the delivery pressure. If necessary, the spring chamber can be relieved of pressure via an external valve, thereby introducing an adjustment of the control slide in the "open" direction.
  • EP Applicants have proposed in EP 1657446 A2 a coolant pump with pressure regulating function which has been proven in practice in the meantime by means of a valve slide, in which this valve slide is adjusted by a central working piston arranged around the pump shaft one abuts around the pump shaft around, the valve spool in the "fully open” starting position adjusting / restoring return spring is applied.
  • the impeller is also axially displaceable in this design but rotatably mounted on the shaft. Between the pressure incline in the housing and the open impeller, the delivery pressure acts and shifts the impeller when it reaches a preset value against the spring force of a present at the back of the impeller disc spring. Due to the increasing in this axial displacement of the impeller sealing gap with respect to the pressure ramp, the delivery pressure of the pump decreases. The prerequisite for this is that there is a space (i.e., the spring chamber) on the rear side of the impeller with a lower pressure level than the delivery pressure.
  • control slide is arranged on a spring-loaded, axially displaceable annular piston, wherein the control pressure for actuating the control slide generated by a, especially for this purpose designed as a swash plate, rear wall of the pump impingement Axialkolbenpumpe, and is regulated by means disposed in the pump housing solenoid valve.
  • the invention is therefore based on the object over a drive wheel, driven, continuously variable coolant pump (with control slide) to develop, which avoids all the aforementioned disadvantages of the prior art, also over constant pumps with pressure relief valve has significant energy advantages, in particular no external energy (such as hydraulics, vacuum, electrical energy) for pressure or volume flow control required, a high reliability (fail-safe) ensures, and the one optimal warming of engines with, based on the displacement, high engine performance, which require very large sized coolant pumps to ensure, and even after the heating of the engine, the engine temperature in continuous operation continuously, highly dynamically, and very reliable over very long periods very accurately is to influence, and at the same time a minimum, optimally use the available space in the engine compartment size should, the to be developed coolant pump also manufacturing and assembly technology is simple, and inexpensive to produce, and over the entire life always high reliability and a to ensure high reliability.
  • this object is achieved by a driven by a drive wheel controllable coolant pump for internal combustion engines according to the features of the independent claim of the invention.
  • Figure 1 arranged on a motor housing 37, inventive controllable coolant pump in the side view in section;
  • Figure 2 the pump shaft 4 with the pilot valve 20 in a spatial
  • Figure 3 the detail Z of Figure 1 with a schematic representation of the "control currents" during the "opening phase” of the control slide 12;
  • Figure 4 the detail Z of Figure 1 with a schematic representation of
  • FIG. 1 shows the arranged on a motor housing 37 according to the invention, controllable coolant pump with a pump housing 1, a mounted on the pump housing 1 in a pump bearing 2, by a drive wheel 3, here in the form of a pulley 40 driven pump shaft 4, with one on a free , flow-side end of this pump shaft 4 rotatably mounted impeller 5, and with a pump housing 1 axially guided, spring-loaded by a return spring 6 annular piston 7, on which the rear wall 8 of a arranged in the pump interior 9 control slide 12, with a Ausström Scheme 10 of the impeller 5 variable overlapping outer cylinder 1 1, is fixed rigidly, wherein between the pump shaft 4 and the pump housing 1 in a seal receptacle 13, a shaft seal 14 is arranged, and also in the pump interior 9 formed by the pump housing 1, or arranged on the pump housing 1 pump dome 15 are arranged, where one between de m impeller 5 and the rear wall 8 of the control slide 12 in the pump interior 9 positionally fixed wall plate 16 is arranged.
  • a slide guide 17 is arranged on the pump housing 1 for the spring piston 6 spring loaded by the return piston 6, which guides the annular piston 7 on the outer jacket and is also freely spaced apart with its inner shell of the pump shaft 4.
  • the slide guide 17 rests with the free, flow-side end of the wall plate 16, so that the adjacent components, ie the slide guide 17, the wall plate 16, a at the inner circumference, spaced from the pump shaft 4 by a throttle gap, on the wall plate 16 radially movably arranged sealing disc 33, the pump shaft 4 and the shaft seal 14, together include a ring-cylindrical pressure chamber 18 / form.
  • the radially movable in the wall disk 16 arranged sealing disk 33 whose inner diameter has little play (tight running fit) relative to the outer diameter of the pump shaft 4, represents a throttle gap, which allows only small leaks in the pressure chamber 18.
  • a pilot valve 20 consisting of a set screw 22, a valve spring 23 and a valve piston 24, is provided on the free end of the pump shaft 4 in a valve seat bore such that the valve piston 24 is in the Closing state of the pilot valve 20 a centrally disposed in the pump shaft 4, opening into the valve seat bore shaft bore 25 closes, which opens via one / more arranged in the pump shaft 4 transverse bore / en 26 into the pressure chamber 18.
  • the pilot valve 20 the pump shaft 4 is shown with the pilot valve 20 in Figure 2 in a three-dimensional exploded view.
  • the laser bores 28 prevent the entry of dirt load and thus increase the reliability of the control device according to the invention. At the same time serve the laser bores 28 in the inventive arrangement as a feed orifice and ensure that no more liquid flows as can proceed via the pilot valve 20.
  • annular piston 7 a filter piston slide 30 is rigidly arranged, which slides on displacement of the annular piston 7 on the outer circumference of the filter sleeve 29 along, so the filter sleeve 29 freed of dirt load, i. the arranged in the filter sleeve 29 laser bores 28 / (filter bores) cleans of the debris accumulations in the inflow, and thus ensures high reliability, even under extreme conditions of use.
  • the annular piston 7 together with the filter piston slide 30, the filter sleeve 29, the wall plate 16 and the slide guide 17 enclose a ring-cylindrical spring pressure chamber 31.
  • FIG. 3 shows the detail Z from FIG. 1 with a schematic representation of the "control currents" during the "opening phase” of the control slide 12.
  • the control slide 12 moves in the direction of the pulley 40, thereby opening with its outer cylinder 1 1 the outflow region 10 of the impeller. 5
  • the valve piston 24 of the pilot valve 20 is the same pressure as immediately behind the filter sleeve 29 in the spring pressure chamber 31, this pressure be referred to in the further explanations as a control pressure.
  • This regulating pressure acts on the annular surface of the annular piston 7 acted upon by this pressure.
  • the resulting pressure force is called the control pressure force below.
  • This control pressure force rectified, also attacks the annular piston 7, the spring force of the return spring 6 at. In sum, the control pressure force and the spring force form an opening force acting on the annular piston 7. This opening force tends to move the rigidly connected to the annular piston 7 control slide 12 in the drive-side end position.
  • the opening force is directed against the control slide 12 to a closing pressure force, which emerges from the acted upon at the annular piston 7 with working pressure surface.
  • a closing pressure force which emerges from the acted upon at the annular piston 7 with working pressure surface.
  • FIG. 4 shows the detail Z from FIG. 1 with a schematic illustration of the control currents during the "closing phase" of the control slide 12.
  • this movement direction of the control slide 12 (shown in FIG. 4 with a directional arrow R on the control slide 12) moves the control slide 12 in the direction of the impeller 5 and thereby closes with its outer cylinder 1 1 the outflow region 10 of the impeller. 5
  • the filter sleeve 29, preset control pressure continuously increases, and this, as already explained, directly applied to the valve piston 24 of the pilot valve 20, when reaching a maximum allowable Working pressure, the pilot valve 20 are preset so that this then opens, while the cooling medium located in the pressure chamber 18, as shown in Figure 4, is emptied into the suction channel 38.

Abstract

L'invention concerne une pompe à réfrigérant réglable destinée à être utilisée dans le circuit de refroidissement de moteurs à combustion interne. L'objet de l'invention est de mettre au point une pompe à réfrigérant réglable entraînée par un moteur qui ne nécessite pas d'énergie extérieure pour la régulation de la pression ou du débit volumique, qui garantit une fiabilité élevée, et qui vise à assurer un chauffage optimal des moteurs avec des puissances de moteur élevées, rapportées à la cylindrée, lesquels moteurs exigent des pompes à réfrigérant de grande taille. La pompe à réfrigérant réglable selon l'invention est pourvue d'un rotor (5) monté solidaire en rotation sur un arbre de pompe (4) et d'un piston annulaire (7) guidé axialement dans un carter de pompe (1), sollicité par un ressort de rappel (6), et sur lequel un tiroir de régulation (12) disposé dans l'espace intérieur (9) de la pompe est fixé rigidement. L'invention se caractérise par le fait que le piston annulaire (7) et un manchon filtrant (29) pourvu de trous perforés au laser (28) forment conjointement avec d'autres éléments à l'intérieur de la pompe à réfrigérant une chambre de pression de ressort (31) en forme de cylindre annulaire, laquelle est reliée à une chambre de refoulement (18) disposée côté arbre de pompe. Une soupape pilote (20) est disposée sur l'extrémité côté rotor de l'arbre de pompe (4) de telle manière que son piston (24) ferme un alésage d'arbre (25) qui est disposé de manière centrale dans l'arbre de pompe (4) et qui débouche dans la chambre de pression (18) en passant par des alésages transversaux (26) ménagés dans l'arbre de pompe (4).
EP14809754.6A 2013-10-30 2014-10-22 Pompe à réfrigérant réglable Withdrawn EP3063412A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310018205 DE102013018205B3 (de) 2013-10-30 2013-10-30 Regelbare Kühlmittelpumpe
PCT/DE2014/000538 WO2015062565A1 (fr) 2013-10-30 2014-10-22 Pompe à réfrigérant réglable

Publications (1)

Publication Number Publication Date
EP3063412A1 true EP3063412A1 (fr) 2016-09-07

Family

ID=50821691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14809754.6A Withdrawn EP3063412A1 (fr) 2013-10-30 2014-10-22 Pompe à réfrigérant réglable

Country Status (7)

Country Link
US (1) US20160215679A1 (fr)
EP (1) EP3063412A1 (fr)
JP (1) JP2016535833A (fr)
KR (1) KR20160078365A (fr)
CN (1) CN105874208A (fr)
DE (1) DE102013018205B3 (fr)
WO (1) WO2015062565A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015119092B4 (de) 2015-11-06 2019-03-21 Pierburg Gmbh Verfahren zur Regelung einer mechanisch regelbaren Kühlmittelpumpe für eine Verbrennungskraftmaschine
DE102015119089B4 (de) * 2015-11-06 2019-03-21 Pierburg Gmbh Kühlmittelpumpe für eine Verbrennungskraftmaschine
RU179501U1 (ru) * 2017-07-18 2018-05-16 Федеральное государственное бюджетное образовательное учреждение высшего образования "Астраханский государственный технический университет", ФГБОУ ВО "АГТУ" Механизм поворота лопаток рабочего колеса свободновихревого насоса
DE102017120191B3 (de) 2017-09-01 2018-12-06 Nidec Gpm Gmbh Regelbare Kühlmittelpumpe für Haupt- und Nebenförderkreislauf
DE102017126870A1 (de) * 2017-11-15 2019-05-16 Schaeffler Technologies AG & Co. KG Nehmerzylinder mit höhenverstellbarem Kolben und Kupplung mit Nehmerzylinder
KR102474350B1 (ko) * 2017-12-06 2022-12-05 현대자동차 주식회사 냉각수 펌프유닛, 및 이를 구비한 엔진 냉각시스템
KR102487184B1 (ko) * 2017-12-18 2023-01-10 현대자동차 주식회사 차량용 냉각수 펌프 및 이를 포함한 냉각 시스템
CN108019356A (zh) * 2017-12-28 2018-05-11 湖南泵阀制造有限公司 一种具有调流与截断功能的多功能离心泵及管路系统
KR102451915B1 (ko) * 2018-03-27 2022-10-06 현대자동차 주식회사 차량용 냉각수 펌프 및 이를 포함한 냉각 시스템
USD923060S1 (en) * 2018-08-09 2021-06-22 Psg Germany Gmbh Pump
WO2020147936A1 (fr) * 2019-01-15 2020-07-23 Pierburg Pump Technology Gmbh Pompe à liquide de refroidissement de véhicule à moteur mécanique commutable
USD966342S1 (en) * 2020-02-07 2022-10-11 Pedrollo S.P.A. Electric pump
USD960203S1 (en) * 2020-09-28 2022-08-09 Hugo Vogelsang Maschinenbau Gmbh Pump for liquids
CN112502998B (zh) * 2020-12-01 2022-08-05 石家庄栾兴泵业有限公司 一种低噪节能的双壳渣浆泵
RU207994U1 (ru) * 2021-04-21 2021-11-29 Общество с ограниченной ответственностью "Инженерно-технологическая промышленная компания" Насос для системы охлаждения двигателя внутреннего сгорания

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE881306C (de) * 1941-10-28 1953-06-29 Voith Gmbh J M Kreiselpumpe mit Spaltringschuetze
DE102004054637B4 (de) * 2004-11-12 2007-04-26 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe
DE102008022354B4 (de) * 2008-05-10 2012-01-19 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe und Verfahren zu deren Regelung
DE102008026218B4 (de) * 2008-05-30 2012-04-19 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe
DE102012207387A1 (de) * 2011-07-27 2013-01-31 Mahle International Gmbh Kühleinrichtung
DE102011113040B3 (de) * 2011-09-09 2012-04-26 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt "Regelbare Kühlmittelpumpe"
DE102012208103A1 (de) * 2012-05-15 2013-11-21 Schaeffler Technologies AG & Co. KG Aktuatorik für eine geregelte Kühlmittelpumpe
DE102014009367B3 (de) * 2014-06-21 2015-03-05 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe

Also Published As

Publication number Publication date
CN105874208A (zh) 2016-08-17
DE102013018205B3 (de) 2014-06-18
US20160215679A1 (en) 2016-07-28
KR20160078365A (ko) 2016-07-04
JP2016535833A (ja) 2016-11-17
WO2015062565A1 (fr) 2015-05-07

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