EP3301274B1 - Kühlkreislauf für ein kraftfahrzeug - Google Patents

Kühlkreislauf für ein kraftfahrzeug Download PDF

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Publication number
EP3301274B1
EP3301274B1 EP17194021.6A EP17194021A EP3301274B1 EP 3301274 B1 EP3301274 B1 EP 3301274B1 EP 17194021 A EP17194021 A EP 17194021A EP 3301274 B1 EP3301274 B1 EP 3301274B1
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EP
European Patent Office
Prior art keywords
degassing
cooling
loop
cooling loop
cooling circuit
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
EP17194021.6A
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English (en)
French (fr)
Other versions
EP3301274A1 (de
Inventor
Jean-Claude Quevallier
Philippe PINEAU
Christophe PECH
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.)
Novares France SAS
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Novares France SAS
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Publication date
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Publication of EP3301274A1 publication Critical patent/EP3301274A1/de
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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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/028—Deaeration devices
    • 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
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • 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
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • 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
    • F01P2050/00—Applications
    • F01P2050/24—Hybrid vehicles
    • 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

Definitions

  • the present invention relates to a cooling circuit for motor vehicles.
  • thermal regulation loop is meant a circuit in which circulates a heat transfer fluid which regulates the temperature of a mechanical member by removing the thermal energy produced during the operation of this body.
  • certain equipment such as the degassing box, may be common to several control loops.
  • Degassing is a function of the engine in which the air or gas bubbles that are present in the coolant are purged.
  • Degassing is an important function because the presence of air bubbles in the coolant has a deleterious effect on the quality of the cooling, and therefore does not allow the engine operation in optimal conditions; this can lead to uncontrolled thermal conditions with consequences in terms of reliability or durability of organs and environmental nuisance.
  • the high temperature control loop has a constant need for degassing because the coolant which is in contact with hot spots of the engine - cooling of the cylinder head - can vaporize punctually and therefore, generate gas bubbles continuously while the control loops at low or very low temperature have a need for degassing when they start up but do not generate gas bubbles during their operation.
  • a degassing box common to a high temperature cooling loop and to one or more cooling loops at a lower temperature is have a detrimental effect on cooling operation at lower temperature.
  • an object of the invention is to provide a cooling circuit with several cooling loops pooling the degassing box without compromising the operation of each cooling loop.
  • the invention relates to a cooling circuit for a motor vehicle comprising a first cooling loop designed to thermoregulate a first member and at least a second cooling loop designed to thermoregulate a second member, each loop of cooling being fluidically connected to a single degassing box, characterized in that each cooling loop designed to ensure the thermoregulation of an organ comprises a degassing module provided with a hydrophobic porous element, comprising a porous membrane superimposed on a media prefilter, by which escape air bubbles contained in said cooling loop to join the degassing box.
  • the invention thus provides a cooling circuit which ensures continuous degassing of multiple cooling loops with a single degassing box.
  • each cooling loop comprises a thermostatic control box on which is disposed the degassing module.
  • each cooling loop comprises a degassing branch connecting the degassing module of each cooling loop to the degassing box.
  • the degassing module comprises a body in which circulates the cooling liquid of a cooling loop and a cover in which the degassing branch is stitched, the hydrophobic porous element being interposed between the body and lid.
  • the cover may have an array of ribs against which the porous hydrophobic element bears.
  • a peripheral seal seals the hydrophobic porous element.
  • the degassing module may have an input connection and an output connection offset relative to each other.
  • each cooling loop comprises at least one pump, an exchanger, a radiator.
  • the invention proposes a cooling circuit 1 for a vehicle comprising a plurality of cooling loops.
  • the cooling circuit 1 comprises three cooling loops, namely: a high temperature cooling loop I, a low temperature cooling loop II and a very low temperature cooling loop III.
  • the high temperature cooling loop I comprises a high temperature exchanger 2 with the vehicle's heat engine, a high temperature radiator 3.
  • a pump 4 circulates a glycol type cooling fluid.
  • thermostatic control unit 5 which controls the cooling fluid circuit according to its operating temperature.
  • a stitching is provided on the thermostatic housing 5 to make a connection with a single degassing box 6.
  • the thermostatic control box 5 is equipped with a degassing module 8 which has a porous and hydrophobic element.
  • hydrophobic porous element is meant an element which allows the passage of air or gas but which remains liquid-tight.
  • the hydrophobic porous element 11 in the degassing module 10 in which the cooling fluid circulates in the high temperature cooling loop, the hydrophobic porous element 11 being in line with the a branch of degassing 9 is the so-called branch that connects the thermostatic control box to the degassing box 6.
  • the hydrophobic porous element 11 is a complex, as can be seen in the figure 3 , comprising a porous membrane 13 - for example, a polymer such as a polypropylene, a polyethylene or a PTFE - and a prefiltering medium 14 which makes it possible to prevent clogging of the microperforations of which the porous membrane 13 is provided.
  • the hydrophobic porous member 11 may further include a seal 15; this seal 15 may be of elastomeric material and may preferably be fixed on the microporous membrane 13 and the prefilter media 14 by overmolding.
  • the hydrophobic porous element 11 is interposed between the body 10 and a cover 16 which may be provided with a network of ribs 17; these ribs 17 serve to provide a support for the porous hydrophobic element 11.
  • the hydrophobic porous element not with a hydrophobic porous medium in the form of a membrane but with a porous hydrophobic medium in the form of a porous ceramic or a sintered powder.
  • the figure 5 shows an alternative embodiment of the degassing module 8 in which the inlet connection and the outlet connection of the degassing module 8 are offset relative to each other so that the flow of coolant maintain the hydrophobic porous element 11 in a state of cleanliness by preventing impurities from being deposited therein.
  • the low temperature cooling loop II comprises a low temperature heat exchanger 20 with, for example, power electronics components (inverter, charger ...) of the electric propulsion chain or a low temperature radiator 30.
  • a pump 40 ensures the circulation of the cooling fluid.
  • the low temperature cooling loop II is also provided with a thermostatic control unit 50 which makes it possible to control the cooling fluid circuit as a function of the temperature.
  • a tapping is provided on the thermostatic box 50 to make a connection with the degassing box 6.
  • a degassing branch 90 ensures the fluid connection between the thermostatic box 50 and the degassing box 6.
  • a degassing module 80 is placed for example on the thermostatic box 50 to allow the extraction of any air bubbles that are present in suspension in the coolant.
  • the very low temperature cooling loop III comprises a very low temperature exchanger 200 with, for example, the battery of the electric propulsion system and a very low temperature radiator 300.
  • a pump 400 circulates the cooling fluid.
  • the very low temperature cooling loop III is also provided with a thermostatic control unit 500 which makes it possible to control the cooling fluid circuit as a function of the temperature.
  • a tapping is provided on the thermostatic housing very low temperature 500 to make a connection with the degassing box 6.
  • a degassing branch 900 ensures the fluidic connection between the thermostatic box 500 and the degassing box 6.
  • a degassing module 800 is placed, for example, on the thermostatic housing to allow the extraction of any air bubbles that are present in suspension in the coolant.
  • the cooling device which comprises three cooling loops has a single degassing box 6 which is therefore common to the three degassing loops.
  • the operation of the cooling device is as follows.
  • Each of the three cooling loops I, II, III has a need for degassing which is satisfied by the connection of each of the cooling loops to the degassing box 6.
  • the cooling fluid of each of the high temperature, low temperature and very low temperature cooling loops is purged of its gas bubbles in a continuous manner which contributes to an optimal operation of the vehicle .
  • the purge of the cooling loops is also performed continuously during the operation of the loops at their respective nominal temperatures.
  • the degassing box 6 which is unique and which is common to the three cooling loops I, II, III is permanently connected to the three cooling loops.
  • a point that is important to note is that the 9,90,900 degassing branches do not carry liquid, the latter are fed by the gas-free degassing modules 8, 80, 800 exclusively when the operation of the engine generates air bubbles. air in the cooling loops.
  • An advantage of this arrangement is that the high, low and very low temperature cooling loops are provided with their own means of degassing.
  • each cooling loop is provided with its own degassing means: degassing box and connecting pipes.
  • the degassing modules can be configured as independent boxes or can be integrated into a radiator or exchanger in addition to the thermostatic box as shown in the figures. Degassing modules are easy to integrate into existing cooling circuits.
  • the invention further guarantees a degassing including short trips in which the thermostatic housing remains closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (8)

  1. Kühlkreislauf (1) für ein Kraftfahrzeug, umfassend eine erste Kühlschleife (I), die dafür konzipiert ist, die Wärmeregelung eines ersten Organs sicherzustellen, und mindestens eine zweite Kühlschleife (II), die dafür konzipiert ist, die Wärmeregelung eines zweiten Organs sicherzustellen, wobei jede Kühlschleife (I, II, III), die dafür konzipiert ist, die Wärmeregelung eines Organs sicherzustellen, fluidisch mit einem einzigen Entgasungsgehäuse (6) verbunden ist, dadurch gekennzeichnet, dass jede Kühlschleife (I, II, III), die dafür konzipiert ist, die Wärmeregelung eines Organs sicherzustellen, ein Entgasungsmodul (8) umfasst, das mit einem hydrophoben porösen Element (11) versehen ist, welches eine poröse Membran (13) umfasst, die einem Vorfiltermedium (14) überlagert ist, durch das Luftblasen, die in der Kühlschleife (I, II, III) enthalten sind, entweichen, um zum Entgasungsgehäuse (6) zu gelangen.
  2. Kühlkreislauf nach Anspruch 1, dadurch gekennzeichnet, dass jede Kühlschleife (I, II, III) ein Thermostat-Regelgehäuse (5, 50, 500) umfasst, auf dem das Entgasungsmodul (8, 80, 800) angeordnet ist.
  3. Kühlkreislauf nach Anspruch 2, dadurch gekennzeichnet, dass jede Kühlschleife (I, II, III) einen Entgasungszweig (9, 90, 900) umfasst, der das Entgasungsmodul (8, 80, 800) jeder Kühlschleife mit dem Entgasungsgehäuse (6) verbindet.
  4. Kühlkreislauf nach Anspruch 3, dadurch gekennzeichnet, dass das Entgasungsmodul (8, 80, 800) einen Körper (10) umfasst, in dem die Kühlflüssigkeit einer Kühlschleife zirkuliert, und einen Deckel (16), in den der Entgasungszweig (9, 90, 900) gestochen ist, wobei das hydrophobe poröse Element (11) zwischen dem Körper (10) und dem Deckel (16) eingefügt ist.
  5. Kühlkreislauf nach Anspruch 4, dadurch gekennzeichnet, dass der Deckel (16) ein Gitter aus Rippen (17) aufweist, an denen das hydrophobe poröse Element (11) in Anlage geht.
  6. Kühlkreislauf nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass eine umlaufende Dichtung (15) das hydrophobe poröse Element (11) umschließt.
  7. Kühlkreislauf nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass das Entgasungsmodul einen Eingangsanschluss und einen Ausgangsanschluss aufweist, die zueinander versetzt sind.
  8. Kühlkreislauf nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass jede Kühlschleife mindestens eine Pumpe, einen Tauscher, einen Kühler aufweist.
EP17194021.6A 2016-09-30 2017-09-29 Kühlkreislauf für ein kraftfahrzeug Active EP3301274B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1659465A FR3057024B1 (fr) 2016-09-30 2016-09-30 Circuit de refroidissement pour un vehicule automobile

Publications (2)

Publication Number Publication Date
EP3301274A1 EP3301274A1 (de) 2018-04-04
EP3301274B1 true EP3301274B1 (de) 2019-08-28

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EP17194021.6A Active EP3301274B1 (de) 2016-09-30 2017-09-29 Kühlkreislauf für ein kraftfahrzeug

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EP (1) EP3301274B1 (de)
ES (1) ES2758228T3 (de)
FR (1) FR3057024B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019112196A1 (de) * 2019-05-09 2020-11-12 Norma Germany Gmbh Vorrichtung zum Entgasen von einer in einer Flüssigkeitsleitung strömenden Flüssigkeit
FR3107210B1 (fr) * 2020-02-18 2023-05-19 Psa Automobiles Sa Dispositif de conditionnement thermique du groupe motopropulseur et de l’habitacle de vehicules electriques ou hybrides et procede de mise en œuvre dudit dispositif
SE544074C2 (en) 2020-04-29 2021-12-07 Scania Cv Ab Thermal Management System, and Vehicle
SE544587C2 (en) * 2020-05-19 2022-09-13 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
SE544139C2 (en) 2020-05-19 2022-01-11 Scania Cv Ab Cooling system and vehicle comprising such a cooling system
DE102020122797A1 (de) * 2020-09-01 2022-03-03 Bayerische Motoren Werke Aktiengesellschaft Ausgleichsbehälter für ein Kühlmittelsystem und Kraftfahrzeug
EP4627201A1 (de) * 2022-11-29 2025-10-08 Volvo Truck Corporation Kältemittelexpansionstank für ein brennstoffzellenstapel-fahrzeugkühlsystem
WO2024115949A1 (en) * 2022-11-30 2024-06-06 Volvo Truck Corporation Active air pressure for coolant system
EP4719799A1 (de) * 2023-06-05 2026-04-08 Volvo Truck Corporation Kühlsystem für ein fahrzeug

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FR1357064A (fr) * 1963-02-20 1964-04-03 Capsule de bouchage perméable aux gaz
SE425514B (sv) * 1981-05-08 1982-10-04 Nohab Diesel Ab Sett att temperaturreglera ett ferskvattenkylsystem for kompressormatade forbrenningsmotorer med luftmellankylare samt ferskvattenkylsystem i enlighet med settet
US6616059B2 (en) * 2002-01-04 2003-09-09 Visteon Global Technologies, Inc. Hybrid vehicle powertrain thermal management system and method for cabin heating and engine warm up
SE524916C2 (sv) * 2003-02-27 2004-10-19 Scania Cv Abp Anordning för att separera gas från ett vätskeformigt medium
JP2005315116A (ja) * 2004-04-27 2005-11-10 Toyota Motor Corp 冷却液流路の空気抜き構造
DE102011056282A1 (de) * 2011-12-05 2013-06-06 Still Gmbh Kühlsystem für ein Flurförderzeug
EP2615273A1 (de) * 2012-01-11 2013-07-17 Volvo Car Corporation Kühlsystem für einen Motor

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
FR3057024A1 (fr) 2018-04-06
EP3301274A1 (de) 2018-04-04
FR3057024B1 (fr) 2018-10-26
ES2758228T3 (es) 2020-05-04

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