EP0505241A2 - Zweiphasekühlungseinrichtung für Brennkraftmaschine - Google Patents

Zweiphasekühlungseinrichtung für Brennkraftmaschine Download PDF

Info

Publication number
EP0505241A2
EP0505241A2 EP92400664A EP92400664A EP0505241A2 EP 0505241 A2 EP0505241 A2 EP 0505241A2 EP 92400664 A EP92400664 A EP 92400664A EP 92400664 A EP92400664 A EP 92400664A EP 0505241 A2 EP0505241 A2 EP 0505241A2
Authority
EP
European Patent Office
Prior art keywords
liquid
fluid
condenser
phase
outlet
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Withdrawn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
EP92400664A
Other languages
English (en)
French (fr)
Other versions
EP0505241A3 (en
Inventor
Ngy Srun Ap
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 EP0505241A2 publication Critical patent/EP0505241A2/de
Publication of EP0505241A3 publication Critical patent/EP0505241A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • F01P3/2271—Closed cycles with separator and liquid return
    • 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
    • F01P2003/2214—Condensers
    • F01P2003/2221—Condensers of the horizontal type

Definitions

  • the invention relates to a device for cooling an internal combustion engine, in which a cooling fluid is used which is brought to a boil in the engine, leaves the latter in the vapor phase and liquid phase states, and is then condensed before returning, in the liquid phase state, to the engine.
  • a cooling device of this type operates in a mode called "two-phase", since the cooling fluid, generally a mixture of water and antifreeze, is present in two distinct phases, one in the state liquid, and the other in the vapor state.
  • Such a two-phase cooling mode is to be distinguished from the conventional cooling mode of internal combustion engines, in which the cooling fluid is present in a single phase, namely a liquid phase.
  • the coolant in the liquid state leaves the engine, is then cooled in a radiator fitted with a fan, and then returns to the engine, the circulation of the fluid taking place by forced convection under the action of a pump.
  • the fluid in the vapor state is condensed in a condenser which is located in the same place as the cooling radiator operating in conventional mode.
  • Cooling devices are already known for internal combustion engines, which operate in two-phase mode.
  • Such devices include an inlet for the vapor phase and liquid phase coolant, an outlet for the liquid phase coolant, a condenser interposed between this inlet and this outlet, a phase separator interposed between the inlet and the condenser, a liquid tank interposed between the condenser and the outlet, as well as a branch for circulation of the liquid connecting the phase separator and the tank liquid.
  • cooling devices operating in two-phase mode have so far remained in the experimental stage and have not yet been truly developed in practice.
  • one of the drawbacks of these cooling devices lies in the fact that they require a large number of components, in particular a phase separator, a condenser, a liquid reservoir acting as a buffer, a circulation pump and , if applicable, an expansion tank.
  • connection of all these components requires conduits of different diameters adapted, as the case may be, to the circulation of the fluid in the vapor state or of the fluid in the liquid state, of the fittings and of the hose clamps. .
  • the object of the invention is in particular to avoid the abovementioned drawbacks.
  • the invention provides for this purpose a cooling device of the type mentioned above, in which the condenser comprises a heat exchange bundle carrying at least one fluid box and in which the phase separator and the liquid reservoir are carried by at least one fluid box.
  • a cooling device of compact structure in which the phase separator and the liquid reservoir form an integral part of the condenser, being carried by at least one fluid box of the latter.
  • Such a device not only offers better compactness than known cooling devices, but also it allows direct communication of the different components, without the need to use connecting pipes, fittings and clamps.
  • the condenser bundle is in general horizontal circulation, being mounted between two fluid boxes, and one of the two fluid boxes carries both the phase separator and the reservoir liquid, while the other fluid box provides fluid communication between two parts of the bundle.
  • phase separator and the liquid tank are grouped together on a single condenser fluid box.
  • this fluid box is generally vertical, and it has an upper part comprising the phase separator and the fluid inlet, as well as a lower part comprising the liquid reservoir and the fluid outlet, the circulation branch.
  • liquid being formed by a liquid communication passage directly connecting the upper part and the lower part.
  • the upper part of the fluid box has a first compartment capable of retaining the separated liquid and opening at its base on the liquid communication passage and a second compartment communicating with the first compartment as well as with part of the bundle of the condenser to introduce the separate steam, while the lower part of the fluid box has a compartment forming a reservoir of liquid and supplied by another part of the bundle of the condenser.
  • the lower part of the fluid box includes a circulation pump capable of circulating the liquid coming from the reservoir towards the outlet.
  • the condenser bundle is in general vertical circulation, being mounted between two fluid boxes, and one of the fluid boxes is arranged in the upper part of the bundle and comprises the separator and the fluid inlet, while the other fluid box is arranged in the lower part of the bundle and comprises the liquid reservoir and the fluid outlet, the branch for the circulation of liquid being formed by a pipe connecting the phase separator and the liquid tank.
  • phase separator is secured to one of the fluid boxes, while the liquid reservoir is secured to the other fluid box.
  • the phase separator comprises a liquid collection compartment which extends the upper fluid box and which is provided with a connector for the connection of one end of the fluid circulation pipe, while the liquid reservoir extends the lower fluid box and is fitted with a connector for the connection of another end of the liquid circulation pipe.
  • the lower fluid box includes a circulation pump capable of circulating the liquid coming from the reservoir in the direction of the outlet.
  • the device also advantageously comprises a sealed expansion vessel connected to the fluid box comprising the phase separator.
  • the condenser comprises a fan and the device comprises temperature or pressure sensors ensuring the control of the fan under given conditions.
  • FIG. 1 represents an internal combustion engine 10 the cooling of which is ensured by a fluid, for example a water / antifreeze mixture, which penetrates through an inlet 12 of the engine to constitute a mass 14 of fluid in liquid phase.
  • a fluid for example a water / antifreeze mixture
  • This fluid is brought to a boil, generally at a temperature of between 100 and 120 ° C., in contact with the engine to form a mass of fluid 16 in the vapor phase.
  • the vapor phase and liquid phase coolant leaves the engine 10 via an outlet 18 to be conveyed to a cooling device operating in two-phase mode and designated as a whole by 20.
  • the coolant leaves the engine via a line 22 to reach the inlet 24 of a phase separator 26, also called liquid-vapor separator, which ensures the separation of the two phases.
  • the vapor phase leaves the separator 26 through an outlet 28 and is conveyed by a pipe 30 to a condenser 32 with which is associated a fan 34 driven by an electric motor 36.
  • an expansion tank 74 intended to absorb the variations in expansion of the cooling fluid.
  • the coolant in the vapor phase is condensed to form a liquid phase which is then directed, via a line 38, to a liquid tank 40, also called a buffer tank.
  • the liquid phase separated by the separator 26 leaves the latter by an outlet 42 to be conveyed to the reservoir 40 via a pipe 44.
  • the liquid phase fluid then leaves the reservoir 40 under the action of a pump circulation 46 whose outlet 48 feeds a pipe 50 which then divides into two branches 52 and 54.
  • the branch 52 directly returns the fluid in the liquid state towards the inlet 12 of the engine via a additional heat exchanger, such as an oil exchanger 56, and a line 58 leading to a line 60.
  • the branch 54 is then divided into two branches 62 and 64.
  • the branch 62 supplies a heat exchanger 66 serving radiator for heating the passenger compartment of the motor vehicle, and with which a motor-fan unit 68 is associated. At the outlet of the heat exchanger 66, the cooling fluid returns to the engine via the pipe 60 .
  • the branch 64 also ensures the return of a part of the cooling fluid to the inlet 12 of the engine by means of another additional heat exchanger, such as an inlet heat exchanger 70 and a pipe 72 opening into the pipe 60.
  • the cooling fluid enters the liquid phase in the engine where it is brought to a boil, thus forming a vapor phase.
  • the fluid in the liquid phase and vapor phase mixture state, then leaves the engine to be cooled and condensed in the condenser 32 which is located in place of the cooling radiator of a conventional cooling device.
  • the invention makes it possible to avoid such drawbacks by proposing the production of the cooling device according to a particularly compact structure.
  • the device comprises a condenser 80 allowing a general horizontal circulation of the cooling fluid.
  • the condenser 80 comprises a bundle 82 formed of a set of tubes (not shown) arranged horizontally, one end of which is connected to a first fluid box 84, and the other end of which is connected to a second fluid box 86.
  • the fluid box 84 is generally vertical and has an upper part 88 provided with an inlet 90 for the introduction of the cooling fluid, in liquid phase and in vapor phase, coming from the engine as shown by arrow F1.
  • the upper part 88 of the fluid box 84 acts as a phase separator and comprises, for this purpose, a first compartment 92 into which the end piece 90 opens and a second compartment 94 adjacent to and communicating with the compartment 92 via a passage orifice 96 located substantially halfway up the two compartments.
  • the compartment 92 forms, at its base, a receptacle 98 suitable for retaining the fluid 100 in the liquid phase which is then conveyed to the lower part 102 of the fluid box 84 through a passage 104 for communicating the liquid which is arranged at the base of receptacle 100.
  • the second compartment 94 is limited, in the lower part, by a partition 106.
  • the compartment 94 collects the fluid in the vapor state and makes it possible to convey this vapor in part of the bundle 82, as shown by the arrows F2.
  • the fluid in the vapor state is condensed to the liquid state under the action of the cooling air which passes through the exchanger and which is possibly accelerated by means of a motor-fan unit 108.
  • the fluid reaches the fluid box 86 and leaves the latter by crossing the other part of the beam 82, as shown by the arrows F3 to gain the lower part 102 of the fluid box 84.
  • the lower part 102 comprises a compartment 110 into which the second part of the beam 82 opens, and which extends downwards by a buffer tank 112 intended to collect both the fluid in the liquid phase conveyed by the communication passage 104 and the fluid in the liquid phase from beam 82.
  • the lower part 102 comprises an electric pump 114 provided with an inlet 116 communicating with the reservoir 112 and with an outlet pipe 118 allowing the evacuation of the coolant in liquid phase in the direction of the engine, as represented by the arrow F4 .
  • the fluid box 84 thus forms a compact module which carries the main components of the cooling device, namely the liquid-vapor separator, the buffer tank, and the circulation pump.
  • This module can also carry a sealed expansion vessel similar to the vessel 74 in FIG. 1.
  • the fluid box 84 can serve as a support for various actuating members of the device, in particular temperature or pressure sensors (not shown) intended to control the fan 108.
  • the device comprises a condenser 120 comprising a bundle 122 allowing a generally vertical circulation of the cooling fluid.
  • the bundle 22 comprises a set of tubes (not shown) in a general vertical direction which open, on the one hand, into an upper fluid box 124 and, on the other hand, into a lower fluid box 126.
  • the upper fluid box 124 includes an inlet 128 for the vapor phase and liquid phase coolant coming from the engine, as shown by arrow F5.
  • the fluid box 124 comprises a compartment 130 which extends over the entire width of the bundle 122 and which communicates, through an orifice 132, with a compartment 134 for collecting liquid.
  • a partial partition 136 arranged near the inlet 128 to force the fluid entering the fluid box 124 to go down.
  • the compartment 134 is provided, in the lower part, with a nozzle 138 used for the connection of one end of a pipe 140 for circulating liquid, the other end of which is connected to a nozzle 142 of the lower fluid box 126 .
  • the liquid phase and vapor phase fluid entering the fluid box 124 is separated into its two constituent phases.
  • the liquid phase is collected by the compartment 134 while the vapor phase enters the compartment 130 and then crosses the bundle 122 over its entire width, as shown by the arrows F6.
  • the coolant in the vapor phase is condensed in the liquid phase by heat exchange with fresh air which passes through the bundle 122, the air flow possibly being accelerated by means of a motor-fan unit 144.
  • the fluid in the liquid state is then collected in the lower fluid box 126.
  • the latter comprises a compartment 146 which extends over the entire width of the bundle 122 and which is intended to collect the fluid in the liquid state coming from the bundle 122.
  • the fluid box 126 is extended laterally by a liquid tank 148, also called a buffer tank, and which is arranged below the compartment 134 of the upper fluid box 124.
  • the tank 148 is provided, in the upper part, end piece 142 already mentioned.
  • the reservoir 148 which is located below relative to the compartment 146, collects both the liquid coming from the compartment 146 and the liquid coming from the compartment 134 via the pipe 140.
  • the liquid reservoir 148 is provided with a pump electric 150 provided with an inlet 152 opening into the reservoir 148 and an outlet 154 for circulating the cooling fluid in the direction of the engine, as shown by arrow F7.
  • the upper fluid box 124 can also be provided with an expansion tank (not shown) similar to the tank 74 in FIG. 1.
  • the upper fluid box 124 and / or the lower fluid box 126 may include different actuators or control members, for example temperature or pressure sensors (not shown) controlling the fan 144.
EP19920400664 1991-03-20 1992-03-13 Device for cooling in a two phase mode for an internal combustion engine Withdrawn EP0505241A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9103410 1991-03-20
FR9103410A FR2674289B1 (fr) 1991-03-20 1991-03-20 Dispositif de refroidissement en mode diphasique pour moteur a combustion interne.

Publications (2)

Publication Number Publication Date
EP0505241A2 true EP0505241A2 (de) 1992-09-23
EP0505241A3 EP0505241A3 (en) 1992-11-25

Family

ID=9410956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920400664 Withdrawn EP0505241A3 (en) 1991-03-20 1992-03-13 Device for cooling in a two phase mode for an internal combustion engine

Country Status (3)

Country Link
US (1) US5199387A (de)
EP (1) EP0505241A3 (de)
FR (1) FR2674289B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341927A1 (de) * 1993-12-09 1995-06-14 Bayerische Motoren Werke Ag Teilgeflutetes Verdampfungskühlsystem

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU676244B2 (en) * 1993-02-22 1997-03-06 Thomas, Donald S Improvements in and relating to the roofing of stadium structures and the like
US5752566A (en) * 1997-01-16 1998-05-19 Ford Motor Company High capacity condenser
US5755113A (en) * 1997-07-03 1998-05-26 Ford Motor Company Heat exchanger with receiver dryer
FR2781524B1 (fr) 1998-07-21 2000-09-22 Valeo Thermique Moteur Sa Organe unitaire de distribution et de regulation d'un fluide de refroidissement en mode diphasique pour un moteur a combustion interne
US6481208B1 (en) * 2001-10-01 2002-11-19 Holtec International External steam dump
EP2119993A1 (de) * 2008-05-14 2009-11-18 ABB Research Ltd. Zweiphasiger Kühlkreislauf
GB2495932B (en) 2011-10-25 2014-06-18 Perkins Engines Co Ltd Cooling Delivery Matrix
US11592221B2 (en) 2020-12-22 2023-02-28 Deere & Company Two-phase cooling system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1677981A (en) * 1924-08-23 1928-07-24 Harrison Radiator Corp Process of and means for cooling internal-combustion engines
US2614816A (en) * 1947-02-24 1952-10-21 Engineering Controls Inc Condenser
US3096818A (en) * 1959-07-13 1963-07-09 Harry W Evans Integral ebullient cooler
US3223075A (en) * 1964-05-13 1965-12-14 Barlow Vapor Cooling Company Ebullient cooling system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2281091A (en) * 1940-04-26 1942-04-28 Pacific Entpr Products Inc Method and means of vapor phase cooling of fluid jacketed cylinders
US2458609A (en) * 1942-07-20 1949-01-11 Citroen Sa Andre Cooling device by vaporization for internal-combustion engines
US3989103A (en) * 1973-04-19 1976-11-02 White Motor Corporation Method and apparatus for cooling and deaerating internal combustion engine coolant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1677981A (en) * 1924-08-23 1928-07-24 Harrison Radiator Corp Process of and means for cooling internal-combustion engines
US2614816A (en) * 1947-02-24 1952-10-21 Engineering Controls Inc Condenser
US3096818A (en) * 1959-07-13 1963-07-09 Harry W Evans Integral ebullient cooler
US3223075A (en) * 1964-05-13 1965-12-14 Barlow Vapor Cooling Company Ebullient cooling system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341927A1 (de) * 1993-12-09 1995-06-14 Bayerische Motoren Werke Ag Teilgeflutetes Verdampfungskühlsystem

Also Published As

Publication number Publication date
FR2674289B1 (fr) 1995-02-17
FR2674289A1 (fr) 1992-09-25
EP0505241A3 (en) 1992-11-25
US5199387A (en) 1993-04-06

Similar Documents

Publication Publication Date Title
EP0915307B1 (de) Kondensor für Klimaanlage mit Flüssigkeitsbehälter mit auswechselbarer Patrone
EP0505241A2 (de) Zweiphasekühlungseinrichtung für Brennkraftmaschine
FR2947041A1 (fr) Condenseur avec reserve de fluide frigorigene pour circuit de climatisation
EP0774102A1 (de) Verflüssiger mit einbezogenem behälter für klimaanlage eines kraftfahrzeuges
EP0197823A1 (de) Wärmetauscher für Kraftfahrzeug, insbesondere Abgaswärmetauscher
FR2962199A1 (fr) Condenseur, notamment pour systeme de climatisation d'un vehicule automobile.
FR2514479A1 (fr) Echangeur de chaleur a circulation de liquide, en particulier pour un vehicule automobile
EP0915308A1 (de) Kondensator für Klimaanlage mit wechselbarem Flüssigkeitsbehälter
EP0290340A1 (de) Ölradiator enthaltender Wasserkasten für Kraftfahrzeugwärmeaustauscher
EP0990106B1 (de) Kondensator für klimaanlage mit sammler montiert an halterung
FR2507742A1 (fr) Generateur de vapeur muni d'un dispositif de purge dynamique
FR2661489A1 (fr) Dispositif de boite a eau et de vase d'expansion pour un echangeur de chaleur, tel qu'un radiateur de refroidissement, et echangeur de chaleur comprenant ce dispositif.
FR2666545A1 (fr) Boitier de canalisation d'air, notamment pour un vehicule automobile.
FR2962200A1 (fr) Unite d'echange d'un faisceau d'echange d'un echangeur de chaleur de, faisceau d'echange et echangeur de chaleur
FR2588366A1 (fr) Dispositif de boite a eau et de vase d'expansion, et echangeur de chaleur comprenant ce dispositif
EP0290339B1 (de) Wärmetauscher mit Flüssigkeitszirkulation, insbesondere für Kraftwagen, und mit Entgasungskanal
FR2521277A1 (fr) Echangeur de chaleur, en particulier pour un circuit de refroidissement de moteur a combustion interne
FR2736385A1 (fr) Dispositif fonctionnant en mode diphasique pour le refroidissement d'un moteur a combustion interne
EP0219417A1 (de) Wasserkasten- und Ausdehnungsgefässvorrichtung für einen Wärmetauscher
FR2486814A1 (fr) Dispositif de degazage du liquide d'un circuit de refroidissement a echangeur de chaleur
WO2002063226A1 (fr) Condenseur comprenant un reservoir integre fixe sur une embase
FR2650383A1 (fr) Echangeur de chaleur, notamment echangeur de chaleur de chauffage intercale dans le circuit de refroidissement du moteur d'un vehicule automobile
FR2693764A1 (fr) Dispositif de refroidissement en mode diphasique pour un moteur à combustion interne.
FR2746907A1 (fr) Condenseur pour installation de climatisation de vehicule automobile
FR2706531A1 (fr) Vase d'expansion pour circuit de refroidissement de moteur thermique.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19930212

17Q First examination report despatched

Effective date: 19930426

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940428