EP0545789A1 - Vase d'expansion pour circuit de refroidissement à changement d'état - Google Patents

Vase d'expansion pour circuit de refroidissement à changement d'état Download PDF

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Publication number
EP0545789A1
EP0545789A1 EP92403195A EP92403195A EP0545789A1 EP 0545789 A1 EP0545789 A1 EP 0545789A1 EP 92403195 A EP92403195 A EP 92403195A EP 92403195 A EP92403195 A EP 92403195A EP 0545789 A1 EP0545789 A1 EP 0545789A1
Authority
EP
European Patent Office
Prior art keywords
membrane
expansion vessel
fluid
interior
expansion
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Withdrawn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
EP92403195A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ngy Srun Ap
Michel Potier
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.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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 Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0545789A1 publication Critical patent/EP0545789A1/fr
Withdrawn legal-status Critical Current

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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
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0238—Closure caps with overpressure valves or vent 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
    • 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
    • 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
    • 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
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P2011/0271—Semi-permeable, e.g. using Gore-Tex c fibres
    • 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
    • F01P2070/00—Details
    • 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
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point

Definitions

  • the invention relates to an expansion vessel for a circuit intended for the circulation, substantially under atmospheric pressure, of a fluid which can pass at least partly from the liquid state to the gaseous state and vice versa, in particular a circuit for cooling the heat engine of a motor vehicle.
  • the change of state of the fluid under atmospheric pressure is accompanied by large variations in volume, which must be absorbed by the expansion vessel, which must also be closed to prevent the escape of the vapor of the fluid.
  • the volume available for the fluid inside the expansion tank is substantially constant, the variable fraction of this volume which is not occupied by the fluid must be by air, which implies the possibility for air to enter the expansion tank and to come out according to the variation of the volume of the fluid.
  • the object of the invention is to allow these air movements, while avoiding the loss of vapor from the fluid.
  • the expansion vessel comprises at its upper part an air permeable membrane and substantially impermeable to the vapor of said fluid, mounted in a filling cap equipped with pressure and vacuum relief valves on a path located in parallel with these two valves. These valves allow air to enter or exit in case, for whatever reason, the membrane no longer allows sufficient flow.
  • the generally thin and relatively fragile membrane is advantageously held by two grids arranged on its two faces respectively.
  • the stopper may comprise a tubular body in which extend an intermediate transverse wall and a central tube directed towards the interior of the expansion vessel from the latter, the membrane being annular in shape and extending radially around the central tube, the intermediate wall defining in the tubular body an external space which contains the two valves and which communicates with the interior of the expansion vessel exclusively via the central tube, and an interior space which communicates with the interior of the expansion vessel exclusively through the membrane, these two spaces communicating freely with the exterior atmosphere.
  • the expansion tank illustrated in FIG. 1, intended to form part of the cooling circuit of a heat engine of a motor vehicle, comprises a tank 1 elongated in height, closed in leaktight manner by a cover 2, for example welded.
  • a transverse partition 3, the periphery of which is tightly connected to the wall of the tank 1 separates the interior of the expansion tank in a main tank 4 located above the partition 3 and in an annex tank 5, of smaller diameter, located below.
  • the partition 3 comprises a frustoconical annular region 6, with a half-angle at the apex slightly less than 90 °, rising in the direction of the axis, connected by a cylindrical intermediate region 7 to a central region 8, flat and horizontal, having a central hole 9.
  • the cylindrical region 7 has vertical internal ribs 10 suitable for guiding a ball 11, with a density less than that of the fluid in the liquid state and greater than that of the fluid in the state gaseous, between an extreme upper position where it comes into contact with the horizontal region 8 by closing the hole 9 and an extreme lower position where it rests on a retaining grid 12 fixed to the partition 3.
  • the annex tank 5 is connected to the rest of the fluid circuit by two superposed pipes 13 and 14, and allows the degassing of the fluid circulating in a restricted part of the circuit, during the cold engine start-up phase, without overheating the totali t of the fluid contained in the expansion tank, as described in FR-A-2 640 364 to which reference may be made for more details concerning its operation.
  • the main tank 4 is also connected to the rest of the circuit, in known manner, by an upper tube 15 for the entry of gases, opening at a small distance below the cover 2, and by a lower tube 16 for the return of the liquid, opening a short distance above the partition 3.
  • the cover 2 is provided with an open neck 17 allowing the filling of the expansion vessel, on which is mounted a cap 18 equipped with two valves or valves which open respectively in the event of overpressure and in the event of depression in the expansion tank.
  • the cover 2 has a second neck 19 receiving a second plug 20 which applies against the neck, with the interposition of a sealing ring 21, a flat assembly 22 comprising (see FIG. 2) a thin membrane 23 trapped between two rigid grids 24 and 25.
  • the membrane 23 is permeable air, and substantially impermeable to water vapor, water being the essential constituent of the cooling fluid. It is also impermeable to the vapors of other possible constituents of the fluid, whose molecules are larger than those of water. It may for example be a membrane marketed by GORETEX, having open pores with a diameter of approximately 3 microns.
  • FIG. 3 relates to a variant in which the cover of the expansion tank has a single neck 30 receiving a plug 31 which combines the functions of the plugs 18 and 20 of FIG. 1.
  • This plug comprises a tubular body 32 which penetrates into the neck 30 and which carries in an outer annular groove an O-ring 33 ensuring the seal between the neck and the body 32.
  • the plug also comprises, formed in one piece with the tubular body, an internal transverse wall 34 pierced with 'a central opening 35 and a central tube 36 surrounding the opening 35 and extending downward, that is to say towards the inside of the expansion vessel, from the wall 34.
  • a flat assembly 37 comprising a semi-permeable membrane and two grids, similar to the assembly 22 of Figures 1 and 2 but having a central opening, extends radially between the tube 36 and the tubular body 32 to which it is tightly connected for example by ul welding bother.
  • An annular chamber 38 limited upwards by the partition 34, downwards by the assembly 37, towards the periphery by the body 32 and towards the center by the tube 36, communicates with the interior of the vessel expansion exclusively through the semi-permeable membrane, and communicates freely, through an opening 39 of the plug, with a lateral tube 40 formed in one piece with the neck 30.
  • a piece 41 in the form of cap rests, via a sealing ring 42, on the upper face of the wall 34, against which it is applied by a helical spring 43 bearing on an element 44 secured to the plug.
  • Another helical spring 45 placed inside the part 41 and bearing on the wall 34, applies a seal 46 to an opening 47 in the bottom of the cap 41.
  • air can pass from the interior of the expansion tank to the outside atmosphere by passing through the semi-permeable membrane of the assembly 37 and passing through the chamber 38, the opening 39 and the tubing 40, and air can enter the expansion tank following the reverse path.
  • this overpressure is transmitted through the tube 36 inside the cap-shaped part 41, which lifts by compressing the spring 43 and allows the air to reach the space 48 located inside the stopper, above the wall 34 and outside the part 41, this space also communicating with the pipe 40 through the opening 39.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
EP92403195A 1991-12-06 1992-11-26 Vase d'expansion pour circuit de refroidissement à changement d'état Withdrawn EP0545789A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9115174 1991-12-06
FR9115174A FR2684722A1 (fr) 1991-12-06 1991-12-06 Vase d'expansion pour circuit de refroidissement a changement d'etat.

Publications (1)

Publication Number Publication Date
EP0545789A1 true EP0545789A1 (fr) 1993-06-09

Family

ID=9419772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92403195A Withdrawn EP0545789A1 (fr) 1991-12-06 1992-11-26 Vase d'expansion pour circuit de refroidissement à changement d'état

Country Status (3)

Country Link
EP (1) EP0545789A1 (enrdf_load_stackoverflow)
JP (1) JPH05340246A (enrdf_load_stackoverflow)
FR (1) FR2684722A1 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2066718A2 (es) * 1992-05-08 1995-03-01 Behr Gmbh & Co Dispositivo desgasificador para una instalacion de refrigeracion.
DE102013201332A1 (de) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Kühlsystem einer Fahrzeugbatterie
AT509435B1 (de) * 2010-02-02 2015-10-15 Vaillant Group Austria Gmbh Ausgleichsbehälter für kühlkreisläufe
WO2022048842A1 (de) * 2020-09-01 2022-03-10 Bayerische Motoren Werke Aktiengesellschaft Ausgleichsbehälter für ein kühlmittelsystem und kraftfahrzeug
DE102022113568A1 (de) 2022-05-30 2023-11-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kühlsystem für eine elektrische Traktionsmaschine für ein Kraftfahrzeug, sowie ein Ausgleichsbehälter für ein Kühlsystem
DE102022113569A1 (de) 2022-05-30 2023-11-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kühlsystem für eine elektrische Traktionsmaschine für ein Kraftfahrzeug

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2369753C1 (ru) * 2008-02-29 2009-10-10 Открытое акционерное общество "Автомобильный завод "Урал" Расширительный бачок
JP2022054600A (ja) * 2020-09-28 2022-04-07 いすゞ自動車株式会社 車載タンクのキャップ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535974A (en) * 1947-07-02 1950-12-26 Robertshaw Fulton Controls Co Thermostatically controlled pressure cap for radiators
GB2140706A (en) * 1983-05-03 1984-12-05 Sartorius Gmbh Filter
GB2157586A (en) * 1984-04-24 1985-10-30 Sev Trent Water Authority Air valves in water supply and distribution systems
WO1990001130A1 (de) * 1988-07-21 1990-02-08 Zahnradfabrik Friedrichshafen Ag Druckausgleicher zwischen maschinengehäuse und umgebung
EP0437772A1 (de) * 1990-01-17 1991-07-24 Bayerische Motoren Werke Aktiengesellschaft Verdampfungskühlsystem für eine flüssigkeitsgekühlte Brennkraftmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535974A (en) * 1947-07-02 1950-12-26 Robertshaw Fulton Controls Co Thermostatically controlled pressure cap for radiators
GB2140706A (en) * 1983-05-03 1984-12-05 Sartorius Gmbh Filter
GB2157586A (en) * 1984-04-24 1985-10-30 Sev Trent Water Authority Air valves in water supply and distribution systems
WO1990001130A1 (de) * 1988-07-21 1990-02-08 Zahnradfabrik Friedrichshafen Ag Druckausgleicher zwischen maschinengehäuse und umgebung
EP0437772A1 (de) * 1990-01-17 1991-07-24 Bayerische Motoren Werke Aktiengesellschaft Verdampfungskühlsystem für eine flüssigkeitsgekühlte Brennkraftmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2066718A2 (es) * 1992-05-08 1995-03-01 Behr Gmbh & Co Dispositivo desgasificador para una instalacion de refrigeracion.
AT509435B1 (de) * 2010-02-02 2015-10-15 Vaillant Group Austria Gmbh Ausgleichsbehälter für kühlkreisläufe
DE102013201332A1 (de) * 2013-01-29 2014-07-31 Robert Bosch Gmbh Kühlsystem einer Fahrzeugbatterie
WO2022048842A1 (de) * 2020-09-01 2022-03-10 Bayerische Motoren Werke Aktiengesellschaft Ausgleichsbehälter für ein kühlmittelsystem und kraftfahrzeug
DE102022113568A1 (de) 2022-05-30 2023-11-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kühlsystem für eine elektrische Traktionsmaschine für ein Kraftfahrzeug, sowie ein Ausgleichsbehälter für ein Kühlsystem
DE102022113569A1 (de) 2022-05-30 2023-11-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kühlsystem für eine elektrische Traktionsmaschine für ein Kraftfahrzeug

Also Published As

Publication number Publication date
FR2684722A1 (fr) 1993-06-11
FR2684722B1 (enrdf_load_stackoverflow) 1995-05-24
JPH05340246A (ja) 1993-12-21

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