EP2835608A1 - Kondensator mit doppelter Ebene - Google Patents

Kondensator mit doppelter Ebene Download PDF

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Publication number
EP2835608A1
EP2835608A1 EP13461540.0A EP13461540A EP2835608A1 EP 2835608 A1 EP2835608 A1 EP 2835608A1 EP 13461540 A EP13461540 A EP 13461540A EP 2835608 A1 EP2835608 A1 EP 2835608A1
Authority
EP
European Patent Office
Prior art keywords
core
heat exchanger
dual plane
cores
plane heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13461540.0A
Other languages
English (en)
French (fr)
Inventor
Dawid Szostek
Adam Bedek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Autosystemy Sp zoo
Original Assignee
Valeo Autosystemy Sp zoo
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 Autosystemy Sp zoo filed Critical Valeo Autosystemy Sp zoo
Priority to EP13461540.0A priority Critical patent/EP2835608A1/de
Publication of EP2835608A1 publication Critical patent/EP2835608A1/de
Withdrawn legal-status Critical Current

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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
    • F28D1/0408—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
    • 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
    • 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
    • F25B40/00—Subcoolers, desuperheaters or superheaters
    • F25B40/02—Subcoolers
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • F25B2339/0446—Condensers with an integrated receiver characterised by the refrigerant tubes connecting the header of the condenser to the receiver; Inlet or outlet connections to receiver
    • 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
    • F28D2021/007—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

Definitions

  • This present invention relates to a dual plane heat exchanger for cooling a refrigerant fluid, as well as a dual plane condenser, in particular for a motor car.
  • Condensers are devices that condense into liquid, a high-temperature and high-pressure refrigerant gas discharged from a compressor, by dissipating the heat of the refrigerant gas to a cooling fluid, the air for instance.
  • these condensers are part of a cooling module comprising other exchangers used for other cooling loops, like engine cooling loops.
  • condensers comprising parallel tubes constituting a path to drive the refrigerant fluid that flows into the tubes.
  • the tubes are spaced to allow the circulation of air between them, and then the heat exchange.
  • a condenser may be divided into passes, made of several tubes, the fluid flowing successively from one pass to the other in serpentine way. In normal way, refrigerant flows from top to bottom and the last pass is located on the condenser bottom. The last pass can be, for instance, a subcooling pass for the refrigerant.
  • CAC direct charged air cooler
  • a first solution to this problem is to use a condenser having an inverted flow, as described in patent EP1887295 . Then the refrigerant flows from the bottom to the top of the condenser in order to avoid having the CAC in front of the subcooling pass.
  • an inverted condenser is non standard and induces higher oil retention that negatively influences performance and life-time of the compressor.
  • the present invention aims to overcome such drawbacks, and to provide a dual plane heat exchanger, easy to produce without mechanical connection, and enhancing the cooling module performance.
  • the invention relates to a dual plane heat exchanger, especially a condenser for a refrigerant system, including a first core and a second smaller core, each of said cores being configured to enable a heat exchange between a first fluid flowing successively in said cores and a second fluid flowing successively through said cores, the first and second cores being attached together by brazing to form the dual plane heat exchanger.
  • the first and second cores are assembled without mechanical connection. Consequently, the heat exchanger doesn't need another processing step to be made, and the second smaller core can be easily arranged on any part of the first core to form the heat exchanger.
  • This invention also relates to a dual plane condenser defined by a dual plane heat exchanger as described previously.
  • This invention still relates to a process for making a dual plane heat exchanger, the first and second condensers being brazed together in one shot.
  • the process according to the invention comprises:
  • the dual plane heat exchanger 1 includes a first core 2 and a second smaller core 3, that are arranged in parallel.
  • Each of said cores 2, 3 is configured to enable a heat exchange between a first fluid flowing successively in said cores 2, 3 and a second fluid flowing successively through said cores 2, 3.
  • Each core 2, 3 is made of a plurality of parallel tubes configured to form a circuit for the first fluid, and which are spaced between them to allow the flow of a second fluid. Said tubes are held at their both ends by manifolds 6, 7 in which the first fluid coming from or going into the tubes flows.
  • the tubes are made for instance of aluminum and/or aluminum alloy. They are advantageously flat tubes having two opposite parallel flat faces laterally linked by radius.
  • the tubes can be multi-channel tubes. They are for instance extruded tubes. In another embodiment they are folded tubes internally equipped with an internal fin separating the channels. External fins can be provided between the tubes to enhance heat exchange with the second fluid.
  • the first core 2 is a condenser and the second core 3 is a subcooling core.
  • the first fluid flowing in the tubes is a refrigerant and the second fluid flowing between them is ambient air.
  • the condenser transforms the gas coming from a compressor into liquid along the circuit, while the subcooling core lowers even more the temperature of the liquid.
  • the first core 2 has multiple passes to transform the refrigerant gas into liquid, for instance an uneven number of passes, whereas the second core 3 has one pass for subcooling. Consequently, the second core 3 is smaller than the first one 2.
  • the subcooling core is facing the top part of the condenser, in order to let the bottom part free for arranging a charge air cooler (CAC), that can be set there in some configurations of front-end heat exchange module. Consequently, the subcooling core is not subjected to the heated air coming from the CAC.
  • CAC charge air cooler
  • the first core 2 is configured to have the first fluid flowing from the top to the bottom. This configuration is better for condenser performance than an inverted flow condenser.
  • the first core 2 comprises an inlet 8 on the upper part for the gas refrigerant, that follows afterwards the circuit until the bottom of the condenser.
  • the refrigerant liquid is driven to the second core 3 through a pipe 5 linking the top of the condenser to the subcooling core either directly or, as described, through a receiver 4.
  • the subcooling core is provided with an outlet 9 for driving the refrigerant fluid out of the dual heat exchanger 1.
  • the first core 2 can further comprise an integrated receiver 4 configured to drive the first fluid from said first core 2 to said second core 3.
  • the receiver 4 improves condensing efficiency through gas-liquid separation and is able to remove moisture from the refrigerant.
  • the receiver 4 comprises a channel 11 to drive the first fluid from the bottom to the top of the receiver 4.
  • the pipe 5 links the top of the receiver 4 and the second core 3 for driving the first fluid from the channel 11 to the second core 3.
  • the first 2 and second 3 cores are brazed one shot to form the dual plane heat exchanger 1.
  • the components of each core 2, 3 are brazed in the same time as both cores are linked together by brazing.
  • the integrated receiver 4 can be brazed to the first core 2 and/or the pipe 5 can be brazed to the first and second cores 2, 3, advantageously one shot therewith.
  • the brazing consists in heating up a preassembly of the heat exchanger components, to a molten temperature of a provision metal.
  • the components fixation is fulfilled by capillarity diffusion on the components surface of the provision metal.
  • the process undertaken to form the dual plane heat exchanger 1 is hence simple to operate because the definitive assembly of the cores 2, 3 doesn't rely on added mechanical components. Then, the production of heat exchanger 1 gains time and is less expensive than current ones that need several step to be assembled.
  • the dual plane heat exchanger 1 is provided with brackets 10 configured to enable a preassembly of said cores 2, 3 before brazing.
  • the brackets 10 are clinched on manifolds 6, 7 of said cores 2, 3 and are brazed in the same time than the other components.
  • the manifolds 6, 7 can comprise a collecting plate 20 and a cover 22.
  • the collecting plate 20 comprises slits in which the extremities of the tubes are inserted.
  • the cover 22 closes the volume of the manifold 6, 7 in which the first fluid flows, together with longitudinal baffles 24.
  • the preassembling brackets 10 can be clinched on the manifold 6, 7 of one of the cores 2, 3 and blocked or linked to an inlet and/or outlet bracket 10 of the other core. They comprise for instance a cradle 30 angularly in contact with a part of one of the manifolds 6, 7 and an arm 32 linking the cradle 30 with an inlet and/or outlet bracket 10 of the core 2, 3 either directly or through fingers 34 originated from the arm 32.
  • the dual plane heat exchanger 1 may also comprise brackets 10 configured to attach the exchanger on a support. They are provided for instance on the first core 2 and/or the receiver 4.
  • the invention still relates to a cooling system provided with a dual plane heat exchanger 1 as described previously, such module further comprising for instance a cooling radiator, a charge air cooler and/or a fan.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP13461540.0A 2013-08-08 2013-08-08 Kondensator mit doppelter Ebene Withdrawn EP2835608A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13461540.0A EP2835608A1 (de) 2013-08-08 2013-08-08 Kondensator mit doppelter Ebene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13461540.0A EP2835608A1 (de) 2013-08-08 2013-08-08 Kondensator mit doppelter Ebene

Publications (1)

Publication Number Publication Date
EP2835608A1 true EP2835608A1 (de) 2015-02-11

Family

ID=48951433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13461540.0A Withdrawn EP2835608A1 (de) 2013-08-08 2013-08-08 Kondensator mit doppelter Ebene

Country Status (1)

Country Link
EP (1) EP2835608A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3855101A1 (de) * 2020-01-22 2021-07-28 Valeo Autosystemy SP. Z.O.O. Wärmetauscher mit horizontal positioniertem sammler-trockner

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11211276A (ja) * 1998-01-22 1999-08-06 Showa Alum Corp サブクールシステムコンデンサ
JPH11211279A (ja) * 1998-01-22 1999-08-06 Showa Alum Corp サブクールシステムコンデンサ
JP2001124439A (ja) * 1999-10-25 2001-05-11 Showa Alum Corp 過冷却器付きコンデンサ
DE10104374A1 (de) * 2001-02-01 2002-08-08 Behr Gmbh & Co Kältemittel-Kondensator
WO2006007969A1 (de) * 2004-07-16 2006-01-26 Behr Gmbh & Co. Kg Anordnung zur befestigung eines ersten an einem zweiten wärmeübertrager
EP1887295A1 (de) 2006-08-11 2008-02-13 VALEO AUTOSYSTEMY Sp. Z. o.o. Verbesserter Behälter für einen Verflüssiger, und entsprechender Verflüssiger
US20110219817A1 (en) * 2010-03-15 2011-09-15 Honda Motor Co., Ltd. Heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11211276A (ja) * 1998-01-22 1999-08-06 Showa Alum Corp サブクールシステムコンデンサ
JPH11211279A (ja) * 1998-01-22 1999-08-06 Showa Alum Corp サブクールシステムコンデンサ
JP2001124439A (ja) * 1999-10-25 2001-05-11 Showa Alum Corp 過冷却器付きコンデンサ
DE10104374A1 (de) * 2001-02-01 2002-08-08 Behr Gmbh & Co Kältemittel-Kondensator
WO2006007969A1 (de) * 2004-07-16 2006-01-26 Behr Gmbh & Co. Kg Anordnung zur befestigung eines ersten an einem zweiten wärmeübertrager
EP1887295A1 (de) 2006-08-11 2008-02-13 VALEO AUTOSYSTEMY Sp. Z. o.o. Verbesserter Behälter für einen Verflüssiger, und entsprechender Verflüssiger
US20110219817A1 (en) * 2010-03-15 2011-09-15 Honda Motor Co., Ltd. Heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3855101A1 (de) * 2020-01-22 2021-07-28 Valeo Autosystemy SP. Z.O.O. Wärmetauscher mit horizontal positioniertem sammler-trockner
WO2021148536A1 (en) * 2020-01-22 2021-07-29 Valeo Autosystemy Sp. Z O.O. A heat exchanger with horizontally positioned receiver drier

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