WO2024028052A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
WO2024028052A1
WO2024028052A1 PCT/EP2023/069301 EP2023069301W WO2024028052A1 WO 2024028052 A1 WO2024028052 A1 WO 2024028052A1 EP 2023069301 W EP2023069301 W EP 2023069301W WO 2024028052 A1 WO2024028052 A1 WO 2024028052A1
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WO
WIPO (PCT)
Prior art keywords
tube
manifold
heat exchanger
tubes
fluid
Prior art date
Application number
PCT/EP2023/069301
Other languages
English (en)
Inventor
Condro SEKTI
Kamel Azzouz
Original Assignee
Valeo Systemes Thermiques
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 Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2024028052A1 publication Critical patent/WO2024028052A1/fr

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Classifications

    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0391—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits a single plate being bent to form one or more conduits
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0443—Combination of units extending one beside or one above the other
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0461—Combination of different types of heat exchanger, e.g. radiator combined with tube-and-shell heat exchanger; Arrangement of conduits for heat exchange between at least two media and for heat exchange between at least one medium and the large body of fluid
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0229—Double end plates; Single end plates with hollow spaces
    • 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
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/185—Arrangements or mounting of liquid-to-air heat-exchangers arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • 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
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091—Radiators
    • F28D2021/0094—Radiators for recooling the engine coolant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/0287—Other particular headers or end plates having passages for different heat exchange media

Definitions

  • the present invention relates to a heat exchanger. More specifically, the present invention relates to a heat exchanger for a motor vehicle.
  • a vehicle may include several heat exchangers for example, a radiator and a condenser, a charge air cooler, etc.
  • the condenser is a part of an air-conditioning loop
  • the radiator is part of a drive cooling loop that can be at least one of engine cooling loop or battery/ motor cooling loop depending upon whether the vehicle is any one of internal combustion engine driven vehicle hybrid vehicle and electric vehicle.
  • the radiator and condenser are both disposed at front of a vehicle to be impinged by ram air acting as cooling fluid, the operating heat exchange fluids flowing through the radiator and the condenser undergo heat exchange with the cooling air flowing there across, as the vehicle traverses.
  • coolant flowing through the radiator rejects heat picked up from an engine to the environment, particularly, air flowing across the radiator.
  • the refrigerant flowing through the condenser rejects heat to the outside air, particularly, ram air for causing the phase change of the refrigerant from vapor to liquid state.
  • the inlet temperature of the coolant entering the Low temperature radiator is maximum 70 degree Celsius and has coolant flow rate is maximum 15001/h.
  • the outlet temperature of the coolant egressing the radiator is in the range of 40-60 degree Celsius.
  • the inlet temperature of refrigerant entering the condenser is maximum 140 degree Celsius and the outlet temperature of the refrigerant is 80 -1 10 degree Celsius.
  • the radiator 1 and the condenser 2 are disposed overlapping with respect to one other in the direction of the ram air, as illustrated in FIG. 1 .
  • the radiator 1 is disposed downstream of the condenser 2 in the direction of ram air.
  • the air reaches the radiator 1 after picking heat rejected by the condenser 2 as such the air reaching the radiator 1 is at elevated temperature than the ambient air. Accordingly, the heat rejecting performance of the radiator 1 is substantially reduced. Inefficient performance of the radiator can have serious implications on the drive cooled by the radiator and in worst circumstances can cause seizure or mechanical failure of drive due to over-heating thereof.
  • the condenser is disposed downstream of the radiator in the direction of ram air, the air reaches the condenser after picking heat rejected by the radiator and the air reaching the condenser is at elevated temperature than the ambient air. Accordingly, the efficiency and performance of the condenser is substantially reduced.
  • the condenser is a water-cooled condenser
  • the coolant i.e. water
  • the temperature of the coolant received in the condenser is insufficient to cool the refrigerant. Accordingly, the efficiency and performance of the condenser is reduced.
  • None of the prior art heat exchangers that function as multiple heat exchangers with at least one heat exchanger being condenser defines condensing and sub-cooling passes that are in fluid communication with each other via a receiver drier.
  • the radiator and the condenser are required to be disposed sufficiently spaced apart to achieve sufficient and proper air-flow there across. Such an overlapping arrangement of the radiator and the condenser occupies more space thereby resulting in packaging issues.
  • a heat exchanger called, for example, a hybrid heat exchanger that combines functions of two heat exchangers in one heat exchanger, thereby addressing the packaging issues, reduces overall weight and the vehicle on which such heat exchanger is mounted exhibits improved performance. Also, there is a need for a heat exchanger that combines function of two or more heat exchanger in one, wherein at least one of the heat exchanger is a condenser that includes a condensing and sub-cooling passes in fluid communication with each other via a receiver drier. Further, there is a need for a hybrid heat exchanger that obviates the disadvantages caused by overlapping configuration of the radiator and condenser.
  • An object of the present invention is to provide a heat exchanger that combines functions of two heat exchangers in one heat exchanger, thereby addressing packaging issues and reliability issues.
  • Yet another object of the present invention is to provide a heat exchanger that prevents problems of reduced efficiency and performance of one of the heat exchanger due to obstructed air-flow there through faced in conventional heat exchangers.
  • Still another object of the present invention is to provide a heat exchanger that functions as multiple heat exchangers with at least one heat exchanger being condenser defining condensing and sub-cooling passes that are in fluid communication with each other via a receiver drier.
  • some elements or parameters may be indexed, such as a first element and a second element.
  • this indexation is only meant to differentiate and name elements which are similar but not identical. No idea of priority should be inferred from such indexation, as these terms may be switched without betraying the invention. Additionally, this indexation does not imply any order in mounting or use of the elements of the invention.
  • a heat exchanger for a motor vehicle includes at least one first manifold, a first set of tubes, at least one second manifold and a second set of tubes.
  • the at least one first manifold is for circulation of a first fluid within the first set of tubes to define at least a portion of a first fluid circuit.
  • the at least one second manifold is for circulation of a second fluid within the second set of tubes to define at least a portion of a second fluid circuit.
  • At least one second tube includes a plurality of micro-channels formed by at least one of extrusion and folding is received inside the first tube.
  • the micro- channels define fluid flow passage for the second fluid.
  • the annular space between the first tube and the second tube defines fluid flow passage for the first fluid.
  • the second tube is co-axially arranged within the corresponding first tube.
  • the second tube is comparatively longer than the corresponding first tube, passes through the first manifold and is in fluid communication with the second manifold disposed after the first manifold.
  • the first tube and the second tube includes at least one of dimples and protrusions respectively formed thereon.
  • the first tube includes dimples formed on opposite sides thereof that protrudes inwardly into interior of the first tube for securely holding the corresponding second tube inside the first tube.
  • the dimples formed on opposite sides of the first tube are of same size to coaxially hold the second tube within the first tube.
  • the dimples formed on opposite sides of the first tube are of different dimensions to eccentrically hold the second tube within the first tube.
  • the first tubes are separated by fins.
  • first manifold and the second manifold is formed by assembling a first header, a second header and a cover.
  • the first header includes first apertures to receive the first tubes that configure fluid communication between the spaced apart first manifolds.
  • the second header includes second apertures to receive the second tubes that configure fluid communication between the spaced apart second manifolds.
  • first header and the cover are assembled to each other with the corresponding second header received in either one of the first header and the cover to define the first manifold and the corresponding second manifold.
  • the second header is received in an open end of the first header, the first header along with second header is received in a first opening of the corresponding cover to define the first manifold and the second manifold.
  • At least one of the first fluid and the second fluid is a coolant.
  • the first fluid circuit is for coolant flow with a radiator being part of the first fluid circuit
  • the second fluid circuit is for refrigerant flow with a condenser being part of the second fluid circuit
  • the heat exchanger includes a first inlet, a first outlet, a second inlet and a second outlet.
  • the first inlet and the first outlet are either configured on the same first manifold or on different first manifolds.
  • the second inlet and the second outlet configured on the same second manifold but reverse to the first inlet and first outlet configures U- flow of the second fluid through the second set of tubes and configures counter flow between first fluid flowing through the first tubes and second fluid flowing through the second tubes.
  • Some tubes of the second tubes define a first pass that is a condensing pass while the remaining tubes of the second tubes define a return pass that is the subcooling pass.
  • the condensing pass is in fluid communication with the sub-cooling pass via a receiver drier disposed along and in fluid communication with the second manifold opposite to the second manifold on which the second inlet and second outlet are formed.
  • the receiver drier includes a first hole and a second hole. The receiver drier receives condensed second fluid from the condensing pass defined by few of the second heat exchange tubes through the first hole to remove incompressible moisture and debris therefrom and delivers the condensed second fluid substantially free of debris and incompressible moisture to the sub-cooling pass defined by the remaining of the second heat exchange tubes through the second opening.
  • the heat exchanger of the present invention can be incorporated in any cooling loop configured in a vehicle, wherein the heat exchanger functioning as radiator supplies coolant to any of the vehicle heat exchangers to extract heat from any of the heat-generating components in the vehicle.
  • the vehicle heat exchangers can be any one of radiator, water charged air cooler, chiller and the heat-generating means can be any one of engine, e-motor and battery in a vehicle that is either one of internal-combustion engine driven, electric motor driven or any hybrid vehicle.
  • FIG. 1 illustrates a conventional arrangement of a first heat exchanger and a second heat exchanger arranged in overlapping manner with respect to each other;
  • FIG. 2 illustrates an isometric view of a heat exchanger in accordance with an embodiment of the present invention
  • FIG. 3 illustrates an exploded view of the heat exchanger of FIG. 2
  • FIG. 4 illustrates a side sectional view depicting internal details of a first manifold and a second manifold of the heat exchanger of FIG. 2;
  • FIG. 5 illustrates a tube in tube configuration, wherein a second tube that includes a plurality of micro-channels is received and held inside a first tube;
  • FIG. 6 illustrates an isometric sectional view of the second manifold of FIG. 4 without a cover for depicting internal details thereof;
  • FIG. 7 illustrates an isometric sectional view of the first manifold of FIG. 6 without a second header for depicting internal details thereof;
  • FIG. 8 illustrates an isometric view of a first tube of a first set of tubes with dimples formed thereon, also are depicted enlarged views of the end portions of the first tube;
  • FIG. 9 illustrates an isometric sectional view of the first tube of FIG. 8 depicting internal details thereof, also is depicted an enlarged view depicting the dimple protruding into interior of the first tube;
  • FIG. 10 illustrates an isometric view depicting tube in tube arrangement of the first tube of FIG. 8 and a second tube received and held within the first tube;
  • FIG. 1 1 - FIG. 16 illustrate different configurations of the heat exchanger with different positioning of the first inlet and first outlet for coolant, second inlet and second outlet for refrigerant and receiver drier inlet and outlet on at least one of first manifold and second manifold.
  • heat exchanger for a motor vehicle
  • a heat exchanger that that combines functions of two heat exchangers in one heat exchanger. More specifically, combines functions of a radiator and a condenser for a vehicle, thereby eliminating the need for multiple heat exchangers and problems associated with multiple heat exchangers arranged in overlapping configuration, for example packaging issues and performance and efficiency issues.
  • the present invention is applicable for any heat exchanger for use in vehicular and non-vehicular environment where it is required to combine functions of two heat exchangers into one to address packaging issues, and other problems faced with overlapping arrangement of multiple heat exchangers.
  • FIG. 2 of the accompanying drawings illustrate an isometric view of a heat exchanger 100 in accordance with an embodiment of the present invention for a motor vehicle.
  • FIG. 2 illustrates an exploded view of the heat exchanger 100.
  • the heat exchanger 100 includes at least one first manifold 10a, 10b and at least one second manifold 40a, 40b.
  • At least one first manifold 10a, 10b is for circulation of a first fluid within a first set of tubes 20 to define at least a portion of a first fluid circuit 30.
  • the first fluid circuit 30 is an engine cooling circuit for coolant flow with a radiator 32 being part of the first fluid circuit 30.
  • the heat exchanger 100 includes a pair of first manifolds 10a and 10b, particularly, a first distribution manifold 10a and a first collection manifold 10b to configure I -flow of the coolant.
  • the first distribution manifold 10a distributes heated coolant from the first fluid circuit, particularly, the engine cooling circuit, to the first set of tubes 20.
  • the first collection manifold 10b collects coolant from the first set of tubes 20 after the heated coolant had rejected heat to the refrigerant flowing through microchannels 52 of corresponding second tubes 50 received in the first tubes 20.
  • the heat exchanger 100 includes two first manifolds 10a and 10b, however, one of the two first manifolds 10a and 10b, for example, 10a is divided into a distribution section and a collecting section by an internal baffle.
  • a first inlet 16a for ingress of the coolant and the a first outlet 16b for egress of the coolant are formed on the first manifold 10a, particularly, on the distribution section and the collection section of the first manifold 10a to configure U-flow of the coolant in the first set of tubes 20.
  • the distribution section distributes coolant to few first tubes 20 configuring a first coolant pass and the collecting section collects coolant from the remaining first tubes to configuring a coolant return pass.
  • the other of the two first manifolds 10a and 10b, the first manifold 10b in this case, configures fluid communication between the coolant first pass and the coolant return pass.
  • the heat exchanger 100 configured with a single first manifold 10a, 10b divided into separate sections by a baffle disposed inside the single first manifold 10a, 10b, wherein, the separate sections of the single first manifold 10a, 10b are connected by U- tubes is also within the scope of the present invention.
  • the first section of the single first manifold 10a, 10b distributes the coolant to one end of the U- tubes and the second section of the single manifold 10a, 10b collects the coolant from the other end of the U-tubes.
  • such configuration of single first manifold 10a, 10b is not described in details.
  • At least one second manifold 40a, 40b is configured for circulation of a second fluid within the second set of tubes 50 to define at least a portion of a second fluid circuit 60.
  • the second fluid circuit 60 is an air conditioning loop for refrigerant flow with a condenser 62 being part of the second fluid circuit 60.
  • the heat exchanger 100 may comprise a pair of second manifolds 40a and 40b, particularly, a second distribution manifold 40a and a second collection manifold 40b to configure l-flow of refrigerant.
  • the first distribution manifold 40a distributes refrigerant from the second fluid circuit, particularly, an air-conditioning loop, to the second set of tubes 50, particularly, the micro-channels 52 of the second tubes 50.
  • the second collection manifold 40b collects refrigerant from the second set of tubes 50 after the refrigerant had rejected heat to the coolant flowing in annular space between first tubes 20 and the second tubes 50 received in the first tubes 20.
  • the heat exchanger 100 may include the pair of second manifolds 40a and 40b, however, one of the second manifolds 40a and 40b, for example, 40a may be divided into a distribution section and a collecting section by an internal baffle.
  • a second inlet 46a for ingress of the refrigerant and a second outlet 46b for egress of the refrigerant are formed on the manifold 40a, particularly, on the distribution section and the collection section of the second manifold 40a to configure U-flow of the refrigerant in the second set of tubes 50.
  • the position of the second inlet 46a and the second outlet 46b on the second manifold 40a is reversed with respect to the position of the first inlet 16a and the first outlet 16b on the first manifold 10a.
  • the distribution section distributes refrigerant to few of the second tubes 50 configuring a first refrigerant pass and the collecting section collects refrigerant from the remaining second tubes to configuring a refrigerant return pass.
  • the other of the second manifolds 40a and 40b configures fluid communication between the refrigerant first pass and the refrigerant return pass via a receiver drier 80.
  • the flow of the refrigerant through the second manifolds 40a and 40b and the second tubes 50 is depicted by solid arrows B in the FIG. 3.
  • the first manifold 10a, 10b and the second manifold 40a, 40b are formed by assembling a first header 12a, 12b, a second header 22a, 22a and a cover 44a, 44b.
  • the first header 12a, 12b, the second header 22a, 22b and the cover 44a, 44b are assembled and joined together by using any of the joining processes, such as for example, brazing.
  • the present invention is not limited to any particular joining process for forming secure connection between the components and is not limited to brazing.
  • the first header 12a, 12b includes first apertures 12c, 12d formed thereon to receive the first tubes 20 that configure fluid communication between the spaced apart first manifolds 10a and 10b.
  • Extreme ends of the first tubes 20 are securely held within respective first apertures 12c and 12d formed on the respective first header 12a and 12b and are joined thereto by any of the joining process such as for example, brazing.
  • the present invention is not limited to any particular joining process for configuring secure connection between the extreme ends of the first tubes 20 and the first header 12a and 12b and is not limited to brazing.
  • Such configuration prevents any leakage from first manifold 10a, 10b through the corresponding first apertures 12c, 12d.
  • the second header 22a, 22b includes second apertures 22c, 22d to receive the second tubes 50 that configures fluid communication between the spaced apart second manifolds 40a and 40b.
  • the extreme ends of the second tubes 50 are securely held within respective second apertures 22c and 22d formed on the respective second header 22a and 22b and are joined thereto by any of the joining process such as for example, brazing.
  • the present invention is not limited to any particular joining process for configuring secure connection between the extreme ends of the second tubes 50 and the second header 22a and 22b and is not limited to brazing. Such configuration prevents any leakage between the first manifold 10a, 10b and the respective second manifold 40a, 40b through the respective second apertures 22c, 22d.
  • the first header 12a, 12b and the cover 44a, 44b are assembled to each other with the corresponding second header 22a, 22b received in either one of the first header 12a, 12b and the cover 44a, 44b to define the first manifold 10a, 10b and the corresponding second manifold 40a, 40b.
  • the cover 44a, 44b is in the form of an enclosure with a stepped configuration that includes a first portion with first opening and second portion with a second opening.
  • the first opening is wider than the second opening to form an intermediate neck portion at the interface between the first portion and the second portion of the cover 44a, 44b.
  • the first header 12a, 12b may be also in the form of an enclosure having a closed end and an open end.
  • the second header 22a, 22b is received in the open end of the first header 12a, 12b.
  • the first header 12a, 12b with the second header 22a, 22b received therein is received in the first opening of the corresponding cover 44a, 44b.
  • the neck portion 48a, 48b formed on the cover 44a, 44b prevents further advance of the first header 12a, 12b along with the second header 22a, 22b within the cover 44a, 44b to define the first manifold 10a, 10b and the second manifold 40a, 40b.
  • the second header 22a, 22b separates the first manifold 10a, 10b with respect to the second manifold 40a, 40b.
  • the second header 22a, 22b is received in the first opening of the corresponding cover 44a, 44b and thereafter, the first header 12a, 12b is received in the first opening of the corresponding cover 44a, 44b to define the first manifold 10a, 10b and the second manifold 40a, 40b.
  • the present invention is not limited to any particular configuration and sequence of connections between the first header 12a, 12b, the second header 22a, 22b and the cover 44a, 44b to form the first manifold 10a, 10b and the second manifold 40a, 40b.
  • At least one second tube 50 includes plurality of micro-channels 52 formed by at least one of extrusion and folding.
  • the micro-channels 52 can have square or triangular cross section. However, the present invention is not limited to any particular cross section of the micro-channels 52 or method of forming the micro-channels 52.
  • At least one of the second tubes 50 may be received inside the first tube 20 formed by bending of plate joined along the end sides. Referring to the FIG. 4, the second tube 50 is comparatively longer than the corresponding first tube 20, so that it extends out of the first tube 20.
  • the second tube 50 passes through the first manifold 10a, 10b, it extends out of the second header 22a, 22b and it is in fluid communication with the second manifold 40a, 40b disposed after the first manifold 10, 10b.
  • one second tube 50 is received in one first tube 20 as illustrated in FIG. 5 - FIG. 7. Further, the second tube 50 is co-axially arranged within the corresponding first tube 20.
  • first tube 20 and the second tube 50 include at least one of dimples 20a and protrusions 54, respectively formed thereon.
  • the first tube 20 includes the dimples 20a formed on opposite sides thereof.
  • the dimples 20a protrudes inwardly into interior of the first tube 20 to interact with opposite sides of the corresponding second tube 50 to securely hold the corresponding second tube 50 inside the first tube 20.
  • the dimples 20a formed on opposite sides of the first tube 20 are of same size to coaxially hold the second tube 50 within the first tube 20.
  • the dimples 20a formed on opposite sides of the first tube 20 are of different dimensions to eccentrically hold the second tube 50 within the first tube 20.
  • the dimples 20a formed on opposite sides of the tube 20 are off set from each other.
  • first tube 20 is formed by bending of plate joined along the end sides, the end sides are bent inwardly to form an inwardly extending protrusion 20b that in conjunction with the dimples 20a hold the second tube 50 inside the first tube 20.
  • the second tube 50 may further include outwardly extending protrusions 54 protruding from opposite sides thereof to enable placement and holding of the second tube 50 inside the first tube 20.
  • the outwardly extending protrusions 54 is formed during extrusion of the channels 52.
  • the dimples are partially formed on the first tube 20 and partially formed on the second tube 50 to interact with each other for securely holding the second tubes 50 within the corresponding first tubes 20.
  • the present invention is not limited to any particular configuration, number, and placement of the dimples 20a or protrusions 54 formed on the first tube 20 and the second tube 50 respectively, as far as the dimples 20a or protrusions 54 facilitate secure holding of the second tube 50 inside the first tube 20.
  • the micro-channels 52 may define fluid flow passages for the second fluid, for example the refrigerant and the annular space between the first tube 20 and the second tube 50 may define fluid flow passage for the first fluid, for example, the coolant. Further, the channels 52 of the second tubes define the flow passages for the second fluid, for example, the refrigerant.
  • at least one of the first fluid and the second fluid is a coolant.
  • multiple second tubes 50 are received and held in one first tube 20. In such case, the multiple second tubes 50 are connected and inserted within the first tube 20.
  • the inwardly extending dimples 20a formed on the first tube interact with the opposite sides of the extreme second tubes 50 held in the first tube 20 and adjacent to the walls of the first tube 20 to hold the second tubes 50 within the first tube 20.
  • the flow of the coolant and the refrigerant through the first set of tubes 20 and the second set of tubes 50 can be either parallel flow or counter flow based on the positioning of the first inlet 16a and the first outlet 16b for the coolant, a second inlet 46a and a second out let 46b for the refrigerant and a receiver drier inlet 80a and a receiver drier outlet 80b on at least one of the first manifold 10a, 10b and second manifold 40a, 40b.
  • the heat exchanger 16 illustrate different configurations of the heat exchanger based on different combinations of the positioning of the first inlet 16a and the first outlet 16b for coolant, the second inlet 46a and the second outlet 46b for refrigerant and the receiver drier inlet 80a and the receiver drier outlet 80b on at least one of first manifold 10a, 10b and second manifold 40a, 40b.
  • the heat exchanger of the present invention is not limited to any particular configurations depicted, can have any configuration, with different combinations of refrigerant and coolant flows based on position of the first inlet 16a, the first outlet 16b, the second inlet 46a, the second outlet 46b, and receiver drier inlet and first and second holes 80a and 80b on the receiver drier 80.
  • the first inlet 16a and the first outlet 16b are configured either on the same first manifold 10a, 10b or on different first manifolds 10a and 10b of the first manifolds 10a and 10b.
  • the first inlet 16a and the first outlet 16b are formed one of the first manifold 10a.
  • the first inlet 16a and the first outlet 16b are formed on different first manifolds 10a and 10b disposed opposite to one another.
  • the second inlet 46a and the second outlet 46b are configured on the same second manifold 40a, 40b to configure U-flow of the second fluid through the second set of tubes 50. Furthermore, such configuration of the first inlet 16a and the first outlet 16b formed revered to the second inlet and outlet 46a and 46b configures counter flow between first fluid flowing through the first tubes 20 and second fluid flowing through the second tubes 50.
  • some tubes 50a of the second tubes 50 define a first pass that is a condensing pass while the remaining tubes 50b of the second tubes 50 define a return pass that is the sub-cooling pass.
  • the condensing pass includes more number of second tubes 50 than the second heat exchange tubes in the sub-cooling pass.
  • the condensing pass is in fluid communication with the sub-cooling pass via the receiver drier 80.
  • the receiver drier 80 is disposed along and in fluid communication with the second manifold 40b disposed opposite to the second manifold 40a of the second manifolds 40a and 40b on which the second inlet and outlet 46a and 46b are formed.
  • the receiver drier 80 includes a first hole 80a and a second hole 80b formed thereon.
  • the receiver drier 80 receives condensed second fluid from the condensing pass defined by few of the second tubes through the first hole 80a to remove incompressible moisture and debris therefrom.
  • the receiver drier 80 delivers the condensed second fluid substantially free of debris and incompressible moisture to the sub-cooling pass defined by the remaining of the second tubes through the second opening 80b.
  • the heat exchanger 100 can be incorporated in any cooling loop configured in a vehicle, wherein the heat exchanger functioning as radiator 32 supplies coolant to any of the vehicle heat exchangers to extract heat from any of the heat-generating component in the vehicle.
  • the vehicle heat exchangers can be any one of radiator, water charged air cooler, chiller and the heat-generating means can be any one of engine, e- motor and battery in a vehicle that is either one of internal-combustion engine driven, electric motor driven or any hybrid vehicle.
  • the invention cannot and should not be limited to the embodiments specifically described in this document, as other embodiments might exist.
  • the invention shall spread to any equivalent means and any technically operating combination of means.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur (100) pour un véhicule automobile comprenant au moins un premier collecteur (10a, 10b), un premier ensemble de tubes (20), au moins un second collecteur (40a, 40b) et un second ensemble de tubes (50). Ledit au moins un premier collecteur (10a, 10b) sert à faire circuler un premier fluide dans le premier ensemble de tubes (20) afin de définir au moins une partie d'un premier circuit de fluide. Ledit au moins un second collecteur (40a, 40b) sert à faire circuler un second fluide dans le second ensemble de tubes (50) afin de définir au moins une partie d'un second circuit de fluide. Au moins un des seconds tubes (50) comprend une pluralité de microcanaux (52) formés par un procédé d'extrusion et/ou de pliage et est logé à l'intérieur du premier tube (20). L'espace annulaire entre le premier et le second tube (20) et (50) définit un passage pour le premier fluide.
PCT/EP2023/069301 2022-08-02 2023-07-12 Échangeur de chaleur WO2024028052A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22188221.0 2022-08-02
EP22188221.0A EP4317882A1 (fr) 2022-08-02 2022-08-02 Échangeur de chaleur

Publications (1)

Publication Number Publication Date
WO2024028052A1 true WO2024028052A1 (fr) 2024-02-08

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PCT/EP2023/069301 WO2024028052A1 (fr) 2022-08-02 2023-07-12 Échangeur de chaleur

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EP (1) EP4317882A1 (fr)
WO (1) WO2024028052A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510694A (ja) * 1991-07-02 1993-01-19 Showa Alum Corp 熱交換器用伝熱チユーブ
EP1788333A1 (fr) * 2005-11-21 2007-05-23 Ford Global Technologies, LLC Refroidisseur d'air
WO2020140882A1 (fr) * 2018-12-30 2020-07-09 浙江吉智新能源汽车科技有限公司 Ensemble dissipateur thermique intégré
EP3816541A1 (fr) * 2019-10-30 2021-05-05 Valeo Autosystemy SP. Z.O.O. Séchoir de récepteur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0510694A (ja) * 1991-07-02 1993-01-19 Showa Alum Corp 熱交換器用伝熱チユーブ
EP1788333A1 (fr) * 2005-11-21 2007-05-23 Ford Global Technologies, LLC Refroidisseur d'air
WO2020140882A1 (fr) * 2018-12-30 2020-07-09 浙江吉智新能源汽车科技有限公司 Ensemble dissipateur thermique intégré
EP3816541A1 (fr) * 2019-10-30 2021-05-05 Valeo Autosystemy SP. Z.O.O. Séchoir de récepteur

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