EP4033189A1 - Echangeur de chaleur, notamment condenseur interieur pour systemes hvac de pompe a chaleur - Google Patents

Echangeur de chaleur, notamment condenseur interieur pour systemes hvac de pompe a chaleur Download PDF

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Publication number
EP4033189A1
EP4033189A1 EP22151927.5A EP22151927A EP4033189A1 EP 4033189 A1 EP4033189 A1 EP 4033189A1 EP 22151927 A EP22151927 A EP 22151927A EP 4033189 A1 EP4033189 A1 EP 4033189A1
Authority
EP
European Patent Office
Prior art keywords
header
heat exchange
exchange row
heat
heat exchanger
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.)
Granted
Application number
EP22151927.5A
Other languages
German (de)
English (en)
Other versions
EP4033189B1 (fr
Inventor
Giuseppe Tiziano
Fabio SANDRI
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.)
Denso Thermal Systems SpA
Original Assignee
Denso Thermal Systems SpA
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Publication date
Application filed by Denso Thermal Systems SpA filed Critical Denso Thermal Systems SpA
Publication of EP4033189A1 publication Critical patent/EP4033189A1/fr
Application granted granted Critical
Publication of EP4033189B1 publication Critical patent/EP4033189B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • 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
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28D1/0435—Combination of units extending one behind 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
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F28F2275/045—Fastening; Joining by brazing with particular processing steps, e.g. by allowing displacement of parts during brazing or by using a reservoir for storing brazing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • This invention relates in general to HVAC systems of motor vehicles, more specifically to HVAC systems of electric vehicles.
  • Heat pump systems are increasingly being used for air conditioning in electric vehicles.
  • one critical element is the inner condenser.
  • the object of the invention is to provide as compact a solution as possible for an inner condenser for a heat pump HVAC system.
  • a heat exchanger comprising a first heat exchange row and a second heat exchange row overlapping with each other, wherein each heat exchange row comprises a first header and a second header and a plurality of parallel, coplanar tubes interconnecting the first header and the second header,
  • a heat exchanger is shown, indicated as a whole by reference sign 1.
  • the heat exchanger 1 is a heat transfer fluid/air heat exchanger, in particular an inner condenser of a heat pump HVAC system for an electric vehicle.
  • An example of this system is shown in Fig. 13 .
  • IC denotes an inner condenser with which a fan B is associated, which fan is provided for supplying heated air to the interior of the passenger compartment of the vehicle.
  • C denotes a compressor for circulating the heat transfer fluid inside the circuit of the heat pump.
  • EV denotes an expansion valve
  • OC denotes an outer condenser provided to absorb energy from the outside air.
  • WHE denotes a recovery heat exchanger which is provided to recover waste heat from the electronic components and the battery of the vehicle.
  • the heat exchanger 1 is a double-row heat exchanger; it therefore comprises a first heat exchange row 10 and a second heat exchange row 20 which overlap with each other.
  • the overlapping relationship relates to the direction of the air which flows through the heat exchanger 1 and exchanges heat with the heat transfer fluid inside the heat exchanger 1; this direction is orthogonal to the main faces of the heat exchanger 1.
  • the first heat exchange row 10 comprises a first header 11 and a second header 12 and a plurality of parallel, coplanar tubes 13 interconnecting the first header 11 and the second header 12. Fins 14 are arranged between adjacent tubes 13, which fins are not shown in detail.
  • the second heat exchange row 20 comprises a first header 21 and a second header 22 and a plurality of parallel, coplanar tubes (not shown in the figures) interconnecting the first header 21 and the second header 22. Fins are arranged between adjacent tubes, which fins are not visible in the figures.
  • Two lateral plates 31 and 32 are fixedly connected to the opposite sides of the mass formed by the tubes 13 of the first heat exchange row 10 and by the tubes of the second heat exchange row 20.
  • the first header 11 of the first heat exchange row 10 and the first header 21 of the second heat exchange row 20 are enclosed between a first header plate 41 (shown in Fig. 2 to 4 ) and a first header tank 42 (also shown in Fig. 5 to 7 ).
  • the first header tank 42 in fact constitutes a double tank.
  • the first header plate 41 and the first header tank 42 are fixedly connected to each other, in a manner which will be described in the following.
  • respective covers 43 and 44 are provided which are crimped to both the first header plate 41 and the first header tank 42.
  • the join created by means of crimping may be strengthened by means of a subsequent material coupling process, for example braze-welding.
  • the second header 12 of the first heat exchange row 10 and the second header 22 of the second heat exchange row 20 are enclosed between a second header plate 51, which is identical to the first header plate 41 and therefore also shown in Fig. 2-4 , and a second header tank 52 which is also shown in Fig. 8 to 10 .
  • the second header tank 52 in fact constitutes a double tank.
  • the second header plate 51 and the second header tank 52 are fixedly connected to each other, in a manner which will be described in the following.
  • respective covers 53 and 54 are provided which are crimped to both the second header plate 51 and the second header tank 52.
  • the join created by means of crimping may be strengthened by means of a subsequent material coupling process, for example braze-welding.
  • a plurality of slots 61 are formed in each of the header plates 41 and 51. One end of a relevant tube 13 is inserted in each of these slots 61.
  • the first header 11 of the first heat exchange row 10 has an inlet I of the heat exchanger 1.
  • the second header 22 of the second heat exchange row 20 has an outlet OUT of the heat exchanger 1.
  • reference will only be made to this arrangement. However, the arrangement of the inlet and outlet may be different to that described herein.
  • a fluid connection is provided between the first header 11 of the first heat exchange row 10 and the second header 21 of the second heat exchange row 20.
  • the arrangement of the fluid connection may be different to that described herein.
  • a partition 70 (shown only in Fig. 6 ) is arranged within the first header 11 of the first heat exchange row 10, which partition divides the first header 11 of the first heat exchange row 10 into an inlet chamber 11b and an outlet chamber 11c.
  • partition 70 For convenience, hereinafter reference will only be made to this arrangement. However, the arrangement of the partition may be different to that described herein, or the partition may even be absent.
  • the fluid connection which will be described in the following, connects in particular the outlet chamber 11c of the first header 11 of the first heat exchange row 10 to the first header 21 of the second heat exchange row 20.
  • the arrangement of the fluid connection element may be different to that described herein.
  • Each header tank 42, 52 comprises two lateral edges 42a-42b and 52a-52b fixedly connected to respective lateral edges of the relevant header plate 41, 51.
  • each of the lateral edges 42a-42b and 52a-52b of each header tank 42, 52 has a plurality of tabs 81 crimped onto the relevant lateral edge of the relevant header plate 41, 51.
  • the join created by means of crimping may be strengthened by means of a subsequent material coupling process, for example braze-welding.
  • Each header tank 42, 52 also comprises an intermediate edge 42c, 52c which separates the respective first headers 11, 21 or second headers 12, 22.
  • Each intermediate edge 42c, 52c is fixedly connected to an intermediate portion 41c, 51c of the relevant header plate 41, 51 in order to separate the respective headers of the first heat exchange row 10 and of the second heat exchange row 20 from each other.
  • the intermediate portion 41c, 51c of each header plate 41, 51 has a plurality of tabs 91 crimped into respective windows 92 formed in the intermediate edge 42c, 52c of the relevant header tank 42, 52 (this may be seen in particular in Fig. 11 and 12 ).
  • the join created by means of crimping may be strengthened by means of a subsequent material coupling process, for example braze-welding.
  • the intermediate edge of one of the first header tank 42 or second header tank 52 in the example shown the intermediate edge 42c of the first header tank 42, has a plurality of recesses 93 which establish fluid communication between the respective headers of the first heat exchange row 10 and of the second heat exchange row 20, in the example shown between the outlet chamber 11c of the first header 11 of the first heat exchange row 10 and the first header 21 of the second heat exchange row 20.
  • the recesses 93 therefore define fluid communication passages that are delimited, from opposite sides, by the intermediate edge of one of said first header tank and second header tank (in the example shown, the intermediate edge 42c) and by the intermediate portion of the relevant header plate (in the example shown, the intermediate portion 41c).
  • the intermediate edge 42c comprises two header wall portions which are spaced apart from each other, each of these header wall portions delimiting the relevant header of the first heat exchange row 10 and, respectively, of the second heat exchange row 20.
  • the intermediate edge 42c also comprises an intermediate wall portion which interconnects the aforementioned header wall portions.
  • the recesses or fluid communication passages 93 extend through the header wall portions and the intermediate wall portion interconnecting said header wall portions.
  • the heat transfer fluid follows a U-shaped path in the first heat exchange row 10, by entering from the inlet IN of the first header 11 of the first heat exchange row 10 and flowing through the inlet chamber 11b of the first header 11 of the first heat exchange row 10, the tubes 13 connected thereto, the second header 12 of the first heat exchange row 10, and the tubes 13 which connect the second header 12 of the first heat exchange row 10 to the outlet chamber 11c of the first header 11 of the first heat exchange row 10.
  • the heat transfer fluid flows from the outlet chamber 11c of the first header 11 of the first heat exchange row 10, through the passages between the plate and tank, which passages are defined by the recesses 93, to the first header 21 of the second heat exchange row 20.
  • the heat transfer fluid thus follows a single-pass path in the second heat exchange row 20, by flowing through the first header 21 of the second heat exchange row 20, the tubes of the second heat exchange row 20, and the second header 22 of the second heat exchange row 20, and finally exiting from the outlet OUT of the second header 22 of the second heat exchange row 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP22151927.5A 2021-01-20 2022-01-18 Echangeur de chaleur, notamment condenseur interieur pour systemes hvac de pompe a chaleur Active EP4033189B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000000920A IT202100000920A1 (it) 2021-01-20 2021-01-20 Scambiatore di calore, in particolare condensatore interno per sistemi hvac con pompa di calore

Publications (2)

Publication Number Publication Date
EP4033189A1 true EP4033189A1 (fr) 2022-07-27
EP4033189B1 EP4033189B1 (fr) 2023-11-29

Family

ID=75439199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22151927.5A Active EP4033189B1 (fr) 2021-01-20 2022-01-18 Echangeur de chaleur, notamment condenseur interieur pour systemes hvac de pompe a chaleur

Country Status (3)

Country Link
EP (1) EP4033189B1 (fr)
IT (1) IT202100000920A1 (fr)
PL (1) PL4033189T3 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298401A2 (fr) * 2001-09-29 2003-04-02 Halla Climate Control Corporation Echangeur de chaleur
EP1998133A1 (fr) * 2006-03-01 2008-12-03 Calsonic Kansei Corporation Echangeur de chaleur et echangeur de chaleur de type integre
US20130312455A1 (en) * 2012-05-22 2013-11-28 Halla Climate Control Corp. Evaporator
US20180029446A1 (en) * 2015-03-19 2018-02-01 Hanon Systems Vehicle heat exchanger
EP3739284A1 (fr) * 2019-05-16 2020-11-18 Valeo Autosystemy SP. Z.O.O. Échangeur de chaleur hybride

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298401A2 (fr) * 2001-09-29 2003-04-02 Halla Climate Control Corporation Echangeur de chaleur
EP1998133A1 (fr) * 2006-03-01 2008-12-03 Calsonic Kansei Corporation Echangeur de chaleur et echangeur de chaleur de type integre
US20130312455A1 (en) * 2012-05-22 2013-11-28 Halla Climate Control Corp. Evaporator
US20180029446A1 (en) * 2015-03-19 2018-02-01 Hanon Systems Vehicle heat exchanger
EP3739284A1 (fr) * 2019-05-16 2020-11-18 Valeo Autosystemy SP. Z.O.O. Échangeur de chaleur hybride

Also Published As

Publication number Publication date
EP4033189B1 (fr) 2023-11-29
PL4033189T3 (pl) 2024-04-22
IT202100000920A1 (it) 2022-07-20

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