EP4375609A2 - Echangeur de chaleur, en particulier condenseur interne pour systèmes cvca de pompe à chaleur - Google Patents

Echangeur de chaleur, en particulier condenseur interne pour systèmes cvca de pompe à chaleur Download PDF

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Publication number
EP4375609A2
EP4375609A2 EP24169433.0A EP24169433A EP4375609A2 EP 4375609 A2 EP4375609 A2 EP 4375609A2 EP 24169433 A EP24169433 A EP 24169433A EP 4375609 A2 EP4375609 A2 EP 4375609A2
Authority
EP
European Patent Office
Prior art keywords
distributor
row
heat exchange
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
EP24169433.0A
Other languages
German (de)
English (en)
Other versions
EP4375609A3 (fr
EP4375609B1 (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
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 Denso Thermal Systems SpA filed Critical Denso Thermal Systems SpA
Publication of EP4375609A2 publication Critical patent/EP4375609A2/fr
Publication of EP4375609A3 publication Critical patent/EP4375609A3/fr
Application granted granted Critical
Publication of EP4375609B1 publication Critical patent/EP4375609B1/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
    • 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
    • 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
    • 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
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/268—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by permanent joints, e.g. by welding
    • 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
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • 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

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 distributor and a second distributor and a plurality of parallel, coplanar tubes interconnecting the first distributor and the second distributor,
  • 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. 16 .
  • 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 distributor 11 and a second distributor 12 and a plurality of parallel, coplanar tubes 13 interconnecting the first distributor 11 and the second distributor 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 distributor 21 and a second distributor 22 and a plurality of parallel, coplanar tubes (not shown in the figures) interconnecting the first distributor 21 and the second distributor 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.
  • Each of the distributors 11, 12, 21, 22 has a tubular body, for example having a circular cross section, on a lateral wall 11a, 12a, 21a, 22a of which a plurality of slots is formed, in each of which slots one end of a relevant tube 13 is inserted.
  • the first distributor 11 of the first heat exchange row 10 has an inlet I of the heat exchanger 1.
  • the second distributor 22 of the second heat exchange row 20 has an outlet OUT of the heat exchanger 1.
  • this arrangement hereinafter reference will only be made to this arrangement. However, the arrangement of the inlet and outlet may be different to that described herein.
  • the heat exchanger 1 also comprises a fluid connection element 40 which connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second row 20.
  • a fluid connection element 40 which connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second row 20.
  • a partition 50 is arranged within the first distributor 11 of the first heat exchange row 10, which partition divides the first distributor 11 of the first heat exchange row 10 into an inlet chamber 11b and an outlet chamber 11c.
  • the arrangement of the partition may be different to that described herein, or the partition may even be absent.
  • the fluid connection element 40 connects the outlet chamber 11c of the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20.
  • the fluid connection element may be different to that described herein.
  • 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 distributor 11 of the first heat exchange row 10 and flowing through the inlet chamber 11b of the first distributor 11 of the first heat exchange row 10, the tubes 13 connected thereto, the second distributor 12 of the first heat exchange row 10, and the tubes 13 which connect the second distributor 12 of the first heat exchange row 10 to the outlet chamber 11c of the first distributor 11 of the first heat exchange row 10.
  • the heat transfer fluid flows from the outlet chamber 11c of the first distributor 11 of the first heat exchange row 10, through the fluid connection element 40, to the first distributor 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 distributor 21 of the second heat exchange row 20, the tubes of the second heat exchange row 20, and the second distributor 22 of the second heat exchange row 20, and finally exiting from the outlet OUT of the second distributor 22 of the second heat exchange row 20.
  • the fluid connection element 40 is a monolithic element which is made of metal material and fixed to the lateral walls 11a and 21a of the relevant first row distributor and second row distributor, which in the example shown are the first distributor 11 of the first heat exchange row 10 and the first distributor 21 of the second heat exchange row 20.
  • a plurality of conduits 41 is formed in the fluid connection element 40, which conduits fluidically connect the first row distributor 11 and the second row distributor 21.
  • the fluid connection element 40 is joined to the lateral walls 11a and 21a of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
  • the fluid connection element 40 comprises two junction surfaces 42 and 43 which correspond, respectively, to the lateral wall 11a of the first distributor 11 of the first heat exchange row 10 and to the lateral wall 21a of the first distributor 21 of the second heat exchange row 20.
  • the opposite ends of each of the conduits 41 lead, respectively, into one and the other of the junction surfaces 42 and 43, and correspond to respective holes made in the lateral walls 11a and 21a of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
  • the heat exchanger in Fig. 5 to 7 differs from that in Fig. 1 to 3 on account of the structure of the fluid connection element, which is now denoted by reference sign 40' and is also shown in Fig. 8 and 9 .
  • the fluid connection element 40' is a hollow monolithic block which is made of metal material and fixedly connected at the top to ends 11e and 12e, respectively, of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
  • a conduit or cavity 41' is formed in the fluid connection element 40', which conduit or cavity fluidically connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20.
  • the fluid connection element 40' is joined to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
  • two openings or seats 42' and 43' are formed in the fluid connection element 40' and connected to the conduit 41', in which openings or seats the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 are inserted, respectively.
  • the conduit or cavity 41' of the fluid connection element 40' is also closed by a cover 44' (shown in Fig. 5 to 7 ).
  • FIG. 10 shows only the detail of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40".
  • the fluid connection element 40" is a hollow monolithic plug which is made of metal material, is fork-shaped, and is inserted into the ends 11e and 12e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
  • the fluid connection element 40" is joined to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
  • a conduit or cavity (not shown in Fig. 10 ) is formed in the fluid connection element 40", which conduit or cavity fluidically connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20. This conduit or cavity is closed, at the opposite end to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first di stributor 21 of the second heat exchange row 20, by a cover 44".
  • FIG. 11 shows only the detail of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40′′′.
  • the fluid connection element 40′′′ is a hollow monolithic plug which is made of metal material, is fork-shaped, and is inserted into the ends 11e and 12e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
  • the fluid connection element 40′′′ is joined to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
  • a conduit or cavity 41′′′ is formed in the fluid connection element 40′′′, which conduit or cavity fluidically connects the first distributor 11 of the first heat exchange row 10 to the first distributor 21 of the second heat exchange row 20.
  • This conduit or cavity 41′′′ is closed, at the opposite end to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, by a cover 44′′′.
  • Respective notches 11n and 21n are formed on the lateral walls 11a and 21a of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, at the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, in which notches the fluid connection element 40′′′ is inserted.
  • This arrangement makes it possible for an axial extension of the joint between the connection element and distributors to be smaller than the embodiment in Fig. 10 or even equal to zero in the event that the fluid connection element 40′′′ is completely inserted within the bulk of the distributors 11 and 21, as in the example shown.
  • FIG. 14 shows only the detail of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20, which distributors are connected at the end to the fluid connection element, now denoted by 40"".
  • the fluid connection element 40 ⁇ is an elbow tube which is made of metal material and has opposite ends inserted into the ends 11e and 12e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20.
  • the fluid connection element 40 ⁇ is joined to the ends 11e and 21e of the first distributor 11 of the first heat exchange row 10 and of the first distributor 21 of the second heat exchange row 20 by means of material coupling, for example by means of braze-welding.
  • Fig. 15 shows a further, not claimed example which is analogous to that in Fig. 14 but in which the fluid connection element 40"", instead of being monolithic, is formed by two shells 42 ⁇ and 43 ⁇ which are fixedly connected to each other, for example by means of crimping.

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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP24169433.0A 2021-01-20 2022-01-18 Échangeur de chaleur, en particulier condenseur interne pour systèmes cvca de pompe à chaleur Active EP4375609B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000000914A IT202100000914A1 (it) 2021-01-20 2021-01-20 Scambiatore di calore, in particolare condensatore interno per sistemi hvac con pompa di calore
EP22152045.5A EP4033190B1 (fr) 2021-01-20 2022-01-18 Échangeur de chaleur, en particulier condenseur intérieur pour systèmes cvc à pompe à chaleur

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP22152045.5A Division EP4033190B1 (fr) 2021-01-20 2022-01-18 Échangeur de chaleur, en particulier condenseur intérieur pour systèmes cvc à pompe à chaleur

Publications (3)

Publication Number Publication Date
EP4375609A2 true EP4375609A2 (fr) 2024-05-29
EP4375609A3 EP4375609A3 (fr) 2024-08-21
EP4375609B1 EP4375609B1 (fr) 2025-07-02

Family

ID=75340090

Family Applications (2)

Application Number Title Priority Date Filing Date
EP24169433.0A Active EP4375609B1 (fr) 2021-01-20 2022-01-18 Échangeur de chaleur, en particulier condenseur interne pour systèmes cvca de pompe à chaleur
EP22152045.5A Active EP4033190B1 (fr) 2021-01-20 2022-01-18 Échangeur de chaleur, en particulier condenseur intérieur pour systèmes cvc à pompe à chaleur

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22152045.5A Active EP4033190B1 (fr) 2021-01-20 2022-01-18 Échangeur de chaleur, en particulier condenseur intérieur pour systèmes cvc à pompe à chaleur

Country Status (3)

Country Link
EP (2) EP4375609B1 (fr)
ES (2) ES3043412T3 (fr)
IT (1) IT202100000914A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001133187A (ja) * 1999-11-05 2001-05-18 Showa Alum Corp 複式熱交換器
DE102009031696A1 (de) * 2009-07-04 2011-01-05 Modine Manufacturing Co., Racine Wärmetauscheranordnung
US20120222848A1 (en) * 2011-03-01 2012-09-06 Visteon Global Technologies, Inc. Integrated counter cross flow condenser
JP2013072607A (ja) * 2011-09-28 2013-04-22 Keihin Thermal Technology Corp 熱交換器の製造方法
JP6711317B2 (ja) * 2017-06-13 2020-06-17 株式会社デンソー 熱交換器
EP3653950A4 (fr) * 2017-07-13 2020-11-25 Hangzhou Sanhua Research Institute Co., Ltd. Échangeur de chaleur

Also Published As

Publication number Publication date
EP4375609A3 (fr) 2024-08-21
EP4033190A3 (fr) 2022-10-19
ES2982334T3 (es) 2024-10-15
EP4033190A2 (fr) 2022-07-27
ES3043412T3 (en) 2025-11-25
EP4033190B1 (fr) 2024-04-17
EP4375609B1 (fr) 2025-07-02
IT202100000914A1 (it) 2022-07-20

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