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WO2016020162A1 - Refroidisseur pour refroidir un flux de gaz - Google Patents

Refroidisseur pour refroidir un flux de gaz Download PDF

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Publication number
WO2016020162A1
WO2016020162A1 PCT/EP2015/066198 EP2015066198W WO2016020162A1 WO 2016020162 A1 WO2016020162 A1 WO 2016020162A1 EP 2015066198 W EP2015066198 W EP 2015066198W WO 2016020162 A1 WO2016020162 A1 WO 2016020162A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiator
cooler
section
liquid separator
diffuser
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.)
Ceased
Application number
PCT/EP2015/066198
Other languages
German (de)
English (en)
Inventor
Harald Rieger
Hartmut Sohla
Simon Schneider
David MERCADER QUINTANA
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 WO2016020162A1 publication Critical patent/WO2016020162A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00—Removing ice or water from heat-exchange apparatus
    • F28F17/005—Means for draining condensates from heat exchangers, e.g. from evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/06—Safety or protection arrangements; Arrangements for preventing malfunction by using means for draining heat exchange media from heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/22—Safety or protection arrangements; Arrangements for preventing malfunction for draining

Definitions

  • the present invention relates to a cooler for cooling a gas flow, in particular an exhaust gas recirculation cooler for cooling recirculated exhaust gas, with a radiator block having a gas flow through the gas flow path and a coolant flowed through coolant path, which are thermally coupled to each other media-separated, with a liquid separator for separating liquid from the gas flow, which is arranged downstream of the cooler block with respect to a flow direction of the gas flow, with a cooler housing, in which the cooler block and the liquid separator are arranged, and with a condensate drain, through which the condensate deposited on the liquid separator from the cooler housing can expire.
  • the invention also relates to a motor vehicle with such a radiator and a use of such a radiator.
  • a cooler usually comprises a radiator block which has a gas path through which the gas flow can flow and a coolant path through which a coolant can flow, which are thermally coupled to one another in a media-separated manner.
  • a radiator block which has a gas path through which the gas flow can flow and a coolant path through which a coolant can flow, which are thermally coupled to one another in a media-separated manner.
  • exhaust gas recirculation in which exhaust gas from an exhaust system is externally supplied to a fresh air system to mix the recirculated exhaust gas with the fresh air upstream of combustion chambers of an internal combustion engine.
  • Such exhaust gas recirculation has proved to be advantageous in terms of fuel consumption and pollutant emissions of the internal combustion engine.
  • supercharged internal combustion engines a distinction is made between high-pressure exhaust gas recirculation and low-pressure exhaust gas recirculation.
  • a supercharged internal combustion engine is equipped with an exhaust gas turbocharger whose turbine is arranged in the exhaust system and whose is arranged denser in the fresh air system.
  • the compressor and turbine subdivide the fresh air system and the exhaust system into a high-pressure area and a low-pressure area.
  • the fresh air side low pressure region extends upstream of the compressor.
  • the fresh-air-side high-pressure region extends downstream of the compressor.
  • the exhaust side low pressure region extends downstream of the turbine.
  • the exhaust-gas high-pressure area extends upstream of the turbine.
  • a high-pressure exhaust gas recirculation is thus upstream of the turbine and downstream of the compressor.
  • low-pressure exhaust gas recirculation takes place downstream of the turbine and upstream of the compressor.
  • the exhaust gas may contain water in the form of water vapor, which may be produced by the combustion processes. Also may be contained in the sucked from the environment fresh air water in the form of water vapor.
  • the recirculated exhaust gas is usually cooled by means of an exhaust gas recirculation cooler, for example, to increase the mass flow of fresh air.
  • the recirculated exhaust gas can cool below the dew point of water, as a result of which condensation can occur, so that liquid water is obtained. This can form drops that can damage downstream following components. Both mechanical and corrosive damage is possible.
  • a compressor wheel which rotates in the compressor at high speed, is exposed by the collision with droplets of increased risk of damage. Furthermore, condensate can precipitate and freeze in adverse environmental conditions. Again, in particular, the compressor wheel is exposed to increased risk.
  • the present invention is based on the object for a radiator of the aforementioned type, which may be designed in particular as exhaust gas recirculation cooler to provide an improved embodiment or a novel use, which is characterized in that in the case of condensation the risk of damage to subsequent components is reduced.
  • the invention is based on the general idea of equipping the cooler with a liquid separator. With the aid of such a liquid separator, liquid can be separated from the gas flow, so that the gas flow emerging from the cooler contains no or only a reduced amount of liquid. Consequently, the risk of damage to subsequent components is reduced.
  • the liquid separator is expediently arranged at a distance from the radiator block and the condensate outlet is arranged at a distance from the radiator block. In this way, the liquid separator can separate liquid condensing in the gas flow from the gas flow. In particular, the liquid separator can thereby intercept liquid which condenses in the gas flow toward a gas outlet side of the cooler block in the cooled gas flow. As a result, a high proportion of the liquid in the gas flow through the liquid separator can be deposited, which reduces the risk of damage to subsequent components.
  • the cooler housing has a radiator block section, in which the radiator block is arranged, and that the radiator housing has a diffuser, which in the flow direction of the Gas flow has varying cross-section.
  • the radiator block may have a different cross-section, for example a larger cross section than an outlet opening of the radiator, which may be determined in cross section by a cross section of a subsequent fresh air line.
  • the varying cross-section of the diffuser may serve to influence the pressure and flow rate of the gas flow.
  • An inexpensive solution provides that the liquid separator is held on an inner side of a wall of the diffuser and that the condensate drain is arranged on the wall of the diffuser and provides a fluid passage through the wall of the diffuser. As a result, the liquid separator can be easily introduced into the cooler. In addition, the liquid collected in the liquid separator can be discharged from the cooler through the fluid passage.
  • the liquid separator has a holding frame, which is held on the inside of the wall of the diffuser.
  • the holding frame of the liquid separator facilitates both the mounting of the liquid separator itself and the mounting of the liquid separator in the cooler.
  • liquid separator is held by a welded connection to the inside of the wall of the diffuser.
  • the welded joint provides a temperature-stable, tight and mechanically strong bond.
  • An advantageous possibility provides that the liquid separator is held on an end face of the radiator block portion of the radiator, and that the Condensate drain is disposed on a wall of the radiator block portion of the radiator housing and provides a fluid passage through the wall of the radiator block portion.
  • the liquid separator is held on an end face of the radiator block section, an advantageous and simple welding of the liquid separator to the radiator block section is possible. Due to the fluid passage through the wall of the radiator block section, liquid which the liquid separator has collected from the gas flow can drain out of the radiator.
  • the liquid separator has a holding frame, which is held on an end face of the radiator block portion of the radiator.
  • a further advantageous possibility provides that the liquid separator is held by a shitty connection on an end face of the radiator block section of the radiator.
  • the shit connection provides a temperature-stable, fluid-tight and mechanically strong connection.
  • the wall of the radiator block section has a recess for the condensate drain, in which liquid is collected from the liquid separator and passed to the condensate drain.
  • a favorable solution provides that the liquid separator is held on an inner side of a wall of the radiator block section, and that the condensate drain is arranged on a wall of the radiator block section of the radiator housing. is net and provides a fluid passage through the wall of the radiator block section.
  • the liquid separator has a holding frame, which is held on the inside of the wall of the radiator block section.
  • the holding frame facilitates the mounting of the liquid separator on the other facilitates the holding frame attachment of the liquid separator to the radiator block section.
  • the holding frame has a connecting portion, on which a welded connection between the holding frame and the wall of the radiator block section is provided.
  • a simple welding of the liquid separator on the radiator block portion for example by means of laser welding is possible.
  • the radiator block section has a connecting section, on which the diffuser is pushed, and that the radiator block section and the diffuser are welded together.
  • the connecting portion can thus hold the diffuser in place for a welding operation, so that the welded joint is simpler and easier to carry out.
  • the connecting portion has a reduced diameter, so that the connecting portion can hold the diffuser both radially and axially in position.
  • the cooler has a connecting element which is arranged between the radiator block section and the diffuser.
  • the connecting element can be designed such that the radiator block section and the diffuser are held in a defined position relative to each other, so that welding of the radiator block section and the diffuser is facilitated.
  • the radiator block section can be welded to the connecting element and the diffuser to the connecting element.
  • a particularly favorable solution provides that the diffuser is held on an inner side of a wall of the radiator block section of the radiator. This allows easy connection of the diffuser to the radiator block section.
  • the diffuser has a connecting portion which is shaped such that a welded connection between the connecting portion and the inside of the wall of the radiator block portion from the outside is possible.
  • a laser welding method can be used, which is characterized by a particularly low heat input into the components.
  • the connecting portion of the diffuser is formed bent outwards, so that a contact point between the connecting portion and the wall of the radiator block portion is visible from the outside.
  • the cooler housing has a separator section, in which the liquid separator and the condensate drain are arranged.
  • This increases the variety of coolers since the separator section contributes to For example, can be replaced by a section by no or another liquid separator is arranged.
  • a modular system is possible in this way.
  • the separator section is formed separately from the section of the cooler housing.
  • existing coolers can be supplemented by a liquid separator.
  • the separator section can thereby be made relatively short, so that the assembly of the liquid separator in the separator section is facilitated.
  • the separator section is arranged between the radiator block section and the diffuser.
  • the separator portion may have a similar large cross section as the cooler block portion, so that the liquid separator may also have a large cross section, whereby the flow resistance can be kept small by the liquid separator.
  • the separator section is held on an end face of the radiator block section. This allows easy connection between the separator section and the radiator block section.
  • a welded connection offers a temperature-stable gas-tight and mechanically strong connection.
  • the separating section has a connecting section, on which the diffuser is held. This allows the Diffuser can be easily attached to the Abscheiderabrough so that radiator block section, separator section and diffuser are interconnected.
  • the separator section has a connecting section, on which the diffuser is pushed. This facilitates the formation of a welded joint between the separator section and the diffuser since the diffuser is stabilized radially relative to the separator section by the connecting section.
  • a favorable possibility provides that the separator section is held by a screw connection to the cooler block section and that the diffuser is held by a screw connection to the separator section. In this way, a releasable connection between the separator section and the radiator block section and the diffuser is given, so that a change of the liquid separator, which is arranged in the Abscheiderabsacrificing, regardless of a change of the radiator is possible.
  • liquid separator is held on an inwardly projecting shoulder of the separator section of the cooler housing.
  • the inwardly projecting shoulder of the Abscheiderabiteses provides a contact surface on which the liquid separator can be well positioned, so that the mounting of the liquid separator is simplified in the Abscheiderabrough.
  • a particularly favorable possibility provides that the liquid separator is welded to the shoulder of the separator section.
  • a welded connection offers a temperature-stable gas-tight and mechanically strong connection.
  • Another particularly favorable possibility provides that the liquid separator is clamped against the shoulder of the Abscheiderabitess. As a result, a releasable connection of the liquid separator at the separator section is possible, so that when changing the liquid separator of the separator section can be used further, so that the cost of a change of the liquid separator can be reduced.
  • the condensate drain provides a fluid passage through a wall of the separator section of the cooler housing. Through the fluid passage, liquid which has accumulated in the liquid separator can be led out of the cooler. Furthermore, a drain pipe of the condensate drain can be attached in a simple manner to the separator section, for example, even before the installation of the separator section on the radiator block section, so that a reliable seal on the condensate drain can be ensured.
  • a favorable variant provides that the separator section has a depression in which liquid collects from the liquid separator and is guided to the condensate drain.
  • the liquid separator has at least one Abscheidemaschine Cook and a holding frame on which the Abscheidemaschine Cook is held. Thereby, the Abscheidemaschine Vietnamese can be easily positioned and held in the cooler.
  • a further advantageous variant provides that the liquid separator has two Abscheidemaschine Cooken, a first holding frame and a second holding frame, and that both on the first holding frame and on the second holding frame in each case a Abscheidemaschine Cook is held. To this way, the deposition can be improved, since two Abscheidemaschinestruktu- ren are used. Furthermore, both separator fiber structures can be easily positioned and held in the cooler.
  • a particularly advantageous variant provides that the first holding frame and the second holding frame are formed separately from the separator section. This allows easy positioning and retention of the separator fiber structures in the separator section of the cooler.
  • the above object is achieved by a motor vehicle having a radiator as described above. Moreover, the above object is achieved by the use of a radiator as described above in an exhaust gas recirculation system for cooling recirculated exhaust gas.
  • Fig. 1 is a greatly simplified schematic diagram-like schematic representation of a
  • Fig. 2 is a sectional view through a radiator according to a first
  • FIG. 4a is a plan view of a liquid separator according to a first
  • FIG. 4b is a sectional view along a section line AA through the liquid separator of Fig. 4a,
  • Fig. 4c is a perspective view of the liquid separator
  • FIG. 4d is an exploded view of the liquid separator of Fig. 4a
  • Fig. 5 is a sectional view through a radiator according to a second
  • Fig. 6 is a sectional view through a radiator according to a third
  • Fig. 7 is a sectional view through a radiator according to a fourth
  • Fig. 8 is a sectional view through a radiator according to a fifth
  • Fig. 9 is a sectional view through a cooler according to a sixth
  • An internal combustion engine 1 shown in Fig. 1 comprises an engine block 2 with a plurality of combustion chambers 3, a fresh air system 4 for supplying fresh air to the combustion chambers 3, an exhaust system 5 for discharging exhaust gas from the combustion chambers 3 and an exhaust gas recirculation system 6 for returning exhaust gas from the Exhaust system 5 to the fresh air system 4.
  • the fresh air system 4 includes a fresh air filter 7, a compressor 8 of an exhaust gas turbocharger 9, a charge air cooler 10 and a throttle device 1 1, for example in the form of a throttle valve.
  • the intercooler 10 is connected to a cooling circuit 12.
  • the exhaust system 5 includes a turbine 13 of the exhaust gas turbocharger 9, which is connected via a drive shaft 14 to the compressor 8. Furthermore, the exhaust system 5 includes a catalyst 15 and a throttle device 16, for example in the form of a storage flap.
  • the exhaust gas recirculation system 6 includes an exhaust gas recirculation valve 17 and an exhaust gas recirculation cooler 18, which is connected to a cooling circuit 19.
  • a removal point 20 of the exhaust gas recirculation system 6 is arranged here downstream of the turbine 13 on the exhaust system 5.
  • An introduction point 21 of the exhaust gas recirculation system 6 is arranged upstream of the compressor 8 on the fresh air system 4. Accordingly, this is a low-pressure exhaust gas recirculation.
  • the cooling circuit 12 of the charge air cooler 10 and / or the cooling circuit 19 of the exhaust gas recirculation cooler 18 may be coupled to an engine cooling circuit 22. It can also be a separate cooling circuit.
  • the exhaust gas recirculation cooler 18, which is also referred to below generally as “cooler 18", comprises a cooler block 23 and a liquid separator 24 for separating liquid from a gas flow 25 which flows through the cooler block 23.
  • the liquid separator 24 is arranged downstream of the cooler block 23.
  • the cooler block 23 has a gas flow path 27 through which the gas flow 25 can flow. Furthermore, the radiator block 23 includes a coolant path 28 which is traversable by a preferably liquid coolant. The coolant path 28 and the gas path 27 are thermally coupled but media separated. Accordingly, the coolant path 28 may remove heat from the gas path 27.
  • the radiator has a radiator housing 100, which has a radiator block section 102 and a diffuser 104.
  • the radiator block section 102 of the cooling housing 100 surrounds the radiator block 23.
  • the radiator block section 102 has a connecting section 106, which is narrower in comparison to the remaining radiator block section 102.
  • a shoulder 108 forms between the connecting portion 106 and the remainder of the radiator block section 102.
  • the diffuser 104 is pushed onto the connecting section 106 so that an end face 10 of the diffuser 104 abuts the shoulder 108 of the radiator block section 102.
  • a joint gap running around the radiator block section 102 and diffuser 104 forms.
  • the diffuser 104 and the radiator block section 102 are welded together using the joint gap.
  • the diffuser 104 extends from the radiator block section 102 to a gas outlet opening 12 of the radiator 18, which is connected to a discharge point 21 of the exhaust gas recirculation system 6.
  • the cross section of the radiator block section 102 differ from the cross section of the gas outlet opening 12.
  • the cross section of the radiator block section 102 has a larger area than the cross section of the gas outlet opening 12.
  • the diffuser 104 has a first section 1 14 that is blocker-side on the radiator block, a tapered second section 11, and an exit-side third section 11. While the first section 1 14 and the third section 1 18 have a substantially constant cross section, the cross section of the second section 1 16 decreases in the course of the first section 1 14 to the third section 1 18. Thus, a wall 120 of the diffuser 104 extends in the second section 1 16 obliquely to a flow direction of the gas flow 25th
  • the liquid separator 24 is arranged to separate liquid from the gas flow 25.
  • the liquid separator 24 has at least one, for example two deposition fiber structures 36, a first holding frame 38 and a second holding frame 40 and a spacer 42. Both on the first holding frame 38 and on the second holding frame 40 a Abscheidemaschine Weg 36 is held in each case.
  • the Abscheidemaschine minimalist 36 is welded, glued, soldered, clamped, pressed, crimped or form-fitting introduced.
  • the holding frames 38 and 40 are respectively arranged with the side on which the Abschei- demaschine 36 are held, to each other and separated by the spacer 42 from each other.
  • the holding frame 38 and 40 and the spacer 42 may be held together by material and / or positive connection, for example by welding, soldering or clamping screws.
  • the support frames 38 and 40 may be arranged such that the deposition fiber structures 36 are disposed on an upstream side of the support frames 38 and 40, respectively.
  • the holding frames 38 and 40 have, for example, a substantially rectangular gas passage opening 44, in particular with rounded corners, through which the gas flow 25 can flow.
  • the gas passage opening 44 is surrounded by a frame structure 46, on which the Abscheidemaschine Weg Design 36 is held.
  • the spacer 42 has a gas passage opening 48 which, for example, has a substantially rectangular shape, in particular with rounded corners.
  • the gas passage opening 48 is incompletely enclosed by a frame structure 50. As seen in the direction of gravity, the frame structure 50 has a recess 51 through which liquid deposited in the liquid separator 24 can emerge from the liquid separator 24.
  • the width of the frame structure 50 of the spacer 42 and thus the distance between the two Abscheidemaschine Weg Designen 36 is between 0.1 and 50 mm, advantageously between 0.5 and 10 mm, more preferably between 5 and 10 mm, in particular, the frame structure 50 of the spacer 42 has a width of 6 mm.
  • the Abscheidemaschineregal 36 is preferably formed flat.
  • the Abscheidemaschineregal 36 a plurality of fibers 54 which form, for example, a fabric, a knitted fabric, a knitted fabric or a felt or the like.
  • the fibers 54 of the Abscheidemaschine Weghoff Weg GmbH openings 56 through which the gas flow 25 can flow through the Abscheidemaschine Weg GmbH.
  • the size of the openings 56 is adapted to the expected size of the liquid droplets within the gas flow 25. As much of the liquid droplets as possible from the gas flow 25 should touch at least one fiber 54 of the separator fiber structure 36 and thereby be trapped from the gas flow 25.
  • the Abscheidemaschine Weg GmbH may have a plurality of layers, which in particular a different mesh sizes 60th and / or different fibers 54 and / or different structures.
  • the deposition fiber structure 36 comprises hydrophilic fibers 54.
  • Hydrophilic fibers 54 adhere water droplets which are to be separated from the gas flow 25 particularly well.
  • the deposition fiber structure 36 may include ceramic and / or metallic fibers 54.
  • the size of the openings 56 and a fiber thickness 58 of the fibers 54 essentially determine a mesh width 60 of the deposition fiber structure 36.
  • the mesh width 60 is essentially the average distance of the fiber centers of the fibers 54 from one another.
  • the liquid separator 24 is preferably arranged at a distance from a gas outlet side 26 of the radiator block 23.
  • the liquid separator 24 is held on an inner side 122 of the wall 120 of the diffuser 104.
  • the liquid separator 24 is disposed in a transition region between the first portion 1 14 and the second portion 1 16 of the diffuser 104.
  • the rear holding frame 40 of the liquid separator 24 has at least one support foot 123, with which the liquid separator 24 rests against the sloping wall 120 in the second section 16 of the diffuser 104.
  • the liquid separator 24 rests against the frame structure 46 of the front holding frame 38 on the inside 122 of the wall 120. This forms a joint gap between the inside 122 of the wall 120 of the diffuser 104 and the liquid separator 24, which is used for a welded connection between the liquid separator 24 and the diffuser 104.
  • the welded connection on the front holding frame 38 of the liquid separator 24 does not extend completely over the frame structure 46 of the holding frame 38. Especially in the lower direction of gravity of the holding frame 38 is no welded connection, since the holding frame 38 is spaced therefrom to the wall 120 of the diffuser 104, to allow a fluid passage for liquid from the liquid separator 24 in the direction of a condensate drain 32.
  • liquid separator 24 is welded to the rear holding frame 40 on the wall 120 of the diffuser 104.
  • the radiator 18 has a condensate drain 32, through which liquid, which is collected by the liquid separator 24 from the gas flow 25, can be conducted out of the radiator 18.
  • the condensate drain 32 is arranged in the direction of gravity below the liquid separator 24, so that due to the gravity caused movement / flow of the liquid, the liquid flows into the condensate drain 32.
  • the condensate drain 32 between the gas outlet side 26 of the radiator block 23 and the liquid arranged separator 24 Due to the arrangement in the first section 1 14, the condensate drain 32 between the gas outlet side 26 of the radiator block 23 and the liquid arranged separator 24. As a result, liquid which has either already precipitated in the gas path 27 or has precipitated on a cooling wall 34 between the gas outlet side 26 and the liquid separator 24 can also flow out of the cooler 18 through the condensate outlet 32.
  • a drain pipe 80 is welded.
  • a second embodiment of the radiator 18 shown in FIG. 5 differs from the first embodiment of the radiator 18 shown in FIGS. 1 to 4 d in that the radiator 18 has a connecting element 126 which is arranged between the radiator block section 102 and the diffuser 104 to facilitate a weld between the radiator block section 102 and the diffuser 104.
  • the connecting element 126 abuts an inner side 128 of a wall 130 of the radiator block section 102, so that a joint gap is formed between the connecting element 126 and the wall 130 of the radiator block section 102.
  • the joining portion is used for a welded joint between the radiator block portion 102 and the connecting member 126.
  • connection element 126 bears against an outer side 133 of the wall 120 of the diffuser 104 and thus forms a joint gap.
  • the joint gap is used for a welded connection between the connecting element 126 and the diffuser 104.
  • the radiator block portion 102 is indirectly connected to the diffuser 104 via the connector 126.
  • the diffuser 104 in the first section 1 14 has a smaller area cross-section than the radiator block section 102.
  • the rear holding frame 40 of the liquid separator 24 has a circumferential connecting portion 124, which extends from the rear holding frame 40 in the direction radiator block portion 102, so that the connecting portion 124, the remaining liquid separator 24 at least partially surrounds.
  • the first embodiment of the radiator 18 shown in FIG. 5 coincides with the first embodiment of the radiator 18 shown in FIGS. 1 to 4d in terms of structure and function, to the above description of which reference is made so far.
  • a third embodiment of the cooler 18 illustrated in FIG. 6 differs from the first embodiment of the cooler 18 illustrated in FIGS. 1 to 4d in that the liquid separator 24 is held on an end face 132 of the cooler block section 102 and in that the condensate drain 32 in the cooler block section 102 is arranged.
  • the rear holding frame 40 of the liquid separator 24 has a wider frame structure 46 than the front holding frame 38 so that the rear holding frame 40 projects and thus forms a shoulder 134, with which the liquid separator 24 is applied to the end face 132 of the radiator block section 102.
  • the wall 130 of the radiator block portion 102 extends beyond the radiator block 23, so that a distance between the radiator block 23 and the liquid separator 24 is given.
  • the condensate drain 32 is arranged in the wall 130 of the radiator block section 102.
  • the wall 130 of the cooler block section 102 has a depression 136, in which liquid, for example, collected from the liquid separator 24 and directed to the condensate drain 32.
  • the third embodiment of the radiator 18 shown in FIG. 6 coincides with the first embodiment of the radiator 18 shown in FIGS. 1 to 4d in terms of structure and function, to the above description of which reference is so far made.
  • a fourth embodiment of the radiator 18 illustrated in FIG. 7 differs from the first embodiment of the radiator 18 shown in FIGS. 1 to 4 d in that the liquid separator 24 is held on an inner side 128 of the wall 130 of the radiator block section 102 and in that the diffuser 104 is held on the inside 128 of the wall 130 of the radiator block section 102 and in that the condensate drain 32 is arranged in the wall 130 of the radiator block section 102.
  • the radiator block section 102 shown in FIG. 7 widens toward the diffuser 104. It is understood that the radiator block section 102 may also have a constant cross section, as in the other embodiments.
  • the rear holding frame 40 of the liquid separator 24 has at least one connecting portion 124, which is bent when seen in section extends to the outside and to the rear so in the direction of the diffuser 104, so that an outer side of the connecting portion 124 can be applied to the inside 128 of the wall 130 of the radiator block portion 102. This creates a joint gap between the plant foot 124 and the wall 130, which can be used for a welded joint.
  • the weld is visible from the direction of the diffuser 104, so that welding by means of laser welding is possible.
  • the diffuser 104 has, on its side facing the radiator block section 102, a turned-over connection section 138 which rests against the inside 128 of the wall 130 of the radiator block section 102 and thus forms a joint gap between the diffuser 104 and radiator block section 102.
  • This joint gap is used for a welded joint.
  • the weld is accessible from the outside, so that a weld by means of laser welding is also possible here.
  • the wall 130 of the radiator block portion 102 extends beyond the radiator block 23 so that the fluid separator 24 may be spaced apart from the radiator block 23 and is. Between the radiator block 23 and the liquid separator 24 of the condensate drain 32 is arranged.
  • the wall 130 of the cooler block section 102 has a depression 136, in which liquid, for example, can be collected from the liquid separator 24 and conducted to the condensate drain 32.
  • the fourth embodiment of the radiator 18 shown in FIG. 7 is the same as the first embodiment of the radiator shown in FIGS. 1 to 4d 18 with respect to structure and function match, the above description of which reference is made in so far.
  • a fifth embodiment of the cooler 18 shown in FIG. 8 differs from the first embodiment of the cooler 18 shown in FIGS. 1 to 4 d in that the cooler 18 has a separator section 140 in which the liquid separator 24 and the condensate drain 32 are arranged ,
  • the separator section 140 is disposed between the radiator block section 102 and the diffuser 104.
  • the separator section 140 bears against the end face 132 of the radiator block section 102 and forms a joint gap between the end face 132 and the separator section 140, which is used for a welded connection between the radiator block section 102 and the separator section 140.
  • the separator section 140 has a connecting section 142, which has a taper, so that a shoulder 144 forms, which runs around the separating section 140.
  • the diffuser 104 is pushed onto this connecting section 142 and hits the shoulder 144.
  • a joint portion forms between the heel 144 and the diffuser 104, which is used for a welded joint between the separator section 140 and the diffuser 104.
  • the separating section 140 On an inner side 146 of the separating section 140, the separating section 140 has an inwardly projecting shoulder 148.
  • the liquid separator 24 abuts the shoulder 148, thus forming a joint gap between the shoulder 148 and the frame structure 46 of the rear Holding frame 40 of the liquid separator 24, which is used for welding use.
  • the separator section 40 on the condensate drain 32 which is arranged in a recess 136.
  • the depression 136 collects liquid, in particular from the liquid separator 24, and forwards it to the condensate drain 32.
  • the fifth embodiment of the radiator 18 shown in FIG. 8 coincides with the first embodiment of the radiator 18 in FIGS. 1 to 4d in terms of construction and function, the above description of which is incorporated herein by reference.
  • a sixth embodiment of the radiator 18 shown in FIG. 9 differs from the fifth embodiment of the radiator 18 shown in FIG. 8 in that the separating section 140 is held by a screw connection to the radiator block section 102 and in that the liquid separator 24 is in the separator section 40 is clamped.
  • the radiator block section 102 has a flange 150 at the end facing the separator section 140.
  • a plurality, for example four holes 152 are provided in the flange 150 .
  • the diffuser 104 has, on its side facing the separator section 140, a flange 154 which has a plurality of, for example four, bores 156.
  • the bores 152 in the flange 150 of the radiator block section 102 and the bores 156 in the flange 154 of the diffuser 104 are arranged in alignment with each other, so that they can be used for a screw connection.
  • the separator section 140 is formed in two parts.
  • the separator section 140 has a base part 158 in which the liquid separator 24 is inserted, and a cover part 160 which holds the liquid separator 24 in the base part 158.
  • the base part 158 has a gas passage opening 162 which is smaller than the area occupied by the liquid separator 24 and a liquid cross-section receiving area 164 with an expanded cross section, so that the liquid separator 24 can be inserted and inserted into the liquid separator receiving area 164.
  • the liquid separator 24 rests on a shoulder 168 which forms between the liquid separator receiving area 164 and the gas passage opening 162 of the base part 158.
  • the depth of the liquid separator receiving area 164 substantially corresponds to the thickness of the liquid separator 24, in the flow direction of the gas flow 25.
  • the cover member 160 has a gas passage opening 166, which has substantially the same size as the gas passage opening 162 of the base part, so that the cover member 160 covers the liquid separator 24 at least in the edge region and thus in the sosstechniksabscheiderability Suite 164 holds. In particular, it may be provided that the liquid separator 24 is clamped in the liquid separator receiving region 164.
  • the base part 158 and the cover 160 have holes 169, for example, four holes 169, which are aligned with each other and aligned with the holes 152 in the flange 150 of the radiator block portion 102 and the holes 156 in the flange 154 of the diffuser 104, so that these holes can be used for a screw connection.
  • the sixth embodiment of the radiator 18 shown in FIG. 9 coincides with the fifth embodiment of the radiator 18 shown in FIG. 8 in terms of structure and function, to the above description of which reference is made so far.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un refroidisseur (18), destiné à refroidir un flux de gaz (25), en particulier dans un moteur à combustion interne (1), de préférence dans un véhicule automobile, lequel refroidisseur comprend un bloc de refroidisseur (23) présentant un chemin de gaz (27) parcouru par le flux de gaz (25) et un chemin d'agent de refroidissement (28) parcouru par un agent de refroidissement, lesquels chemins sont couplés entre eux thermiquement mais avec séparation des fluides. Le refroidisseur comprend par ailleurs un séparateur de liquide (24) destiné à séparer le liquide du flux de gaz (25) et disposé en aval du bloc de refroidisseur (23) par rapport au flux de gaz (25), un boîtier de refroidisseur (100) dans lequel le bloc de refroidisseur (23) et le séparateur de liquide (24) sont disposés, et une sortie de condensat (32) par laquelle le condensat séparé au niveau du séparateur de liquide (24) peut sortir du boîtier de refroidisseur (100). L'invention est caractérisée en ce que le séparateur de liquide (24) est disposé à distance du bloc de refroidisseur (23) et en ce que la sortie de condensat (32) est disposée à distance du bloc de refroidisseur (23). En outre, l'invention concerne un véhicule automobile équipé d'un tel refroidisseur et l'utilisation d'un tel refroidisseur (18) dans un système de recirculation des gaz d'échappement (6) pour refroidir les gaz d'échappement en recirculation.
PCT/EP2015/066198 2014-08-06 2015-07-15 Refroidisseur pour refroidir un flux de gaz Ceased WO2016020162A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014215558.4A DE102014215558A1 (de) 2014-08-06 2014-08-06 Kühler zum Kühlen einer Gasströmung
DE102014215558.4 2014-08-06

Publications (1)

Publication Number Publication Date
WO2016020162A1 true WO2016020162A1 (fr) 2016-02-11

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PCT/EP2015/066198 Ceased WO2016020162A1 (fr) 2014-08-06 2015-07-15 Refroidisseur pour refroidir un flux de gaz

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WO (1) WO2016020162A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018211300A1 (de) 2017-07-18 2019-01-24 Mahle International Gmbh Kondensatabscheider

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107013377B (zh) 2016-01-28 2020-12-29 福特环球技术公司 低压egr阀
DE102016201267B4 (de) 2016-01-28 2018-10-11 Ford Global Technologies, Llc Niederdruck-EGR-Ventil

Citations (2)

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Publication number Priority date Publication date Assignee Title
WO2005075057A1 (fr) * 2004-02-03 2005-08-18 Atlas Copco Airpower Echangeur thermique
FR2925351A1 (fr) * 2007-12-20 2009-06-26 Valeo Systemes Thermiques Module de filtrage de produits de condensation pour echangeur de chaleur et ensemble forme par un echangeur de chaleur et son module de filtrage.

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Publication number Priority date Publication date Assignee Title
DE102005023958A1 (de) * 2005-05-20 2006-11-23 Behr Gmbh & Co. Kg Turboladeranordnung und Verfahren zum Betreiben eines Turboladers
EP1798511B1 (fr) * 2005-12-14 2011-08-24 Behr GmbH & Co. KG Dispositif de refroidissement d'un écoulement de gaz
DE102012208100A1 (de) * 2012-05-15 2013-11-21 Behr Gmbh & Co. Kg Abgaswärmeübertrager

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005075057A1 (fr) * 2004-02-03 2005-08-18 Atlas Copco Airpower Echangeur thermique
FR2925351A1 (fr) * 2007-12-20 2009-06-26 Valeo Systemes Thermiques Module de filtrage de produits de condensation pour echangeur de chaleur et ensemble forme par un echangeur de chaleur et son module de filtrage.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018211300A1 (de) 2017-07-18 2019-01-24 Mahle International Gmbh Kondensatabscheider

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