EP4015975A1 - Wärmetauscher - Google Patents

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Publication number
EP4015975A1
EP4015975A1 EP20214345.9A EP20214345A EP4015975A1 EP 4015975 A1 EP4015975 A1 EP 4015975A1 EP 20214345 A EP20214345 A EP 20214345A EP 4015975 A1 EP4015975 A1 EP 4015975A1
Authority
EP
European Patent Office
Prior art keywords
header
heat exchange
fluid
exchange elements
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.)
Pending
Application number
EP20214345.9A
Other languages
English (en)
French (fr)
Inventor
Mohamed Asri
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 Klimasysteme GmbH
Original Assignee
Valeo Klimasysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Klimasysteme GmbH filed Critical Valeo Klimasysteme GmbH
Priority to EP20214345.9A priority Critical patent/EP4015975A1/de
Publication of EP4015975A1 publication Critical patent/EP4015975A1/de
Pending 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
    • 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
    • F28D7/0083—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 a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • F28D7/0091—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 a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium the supplementary medium flowing in series through the units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0412—Multiple heat exchangers arranged in parallel or in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0462—Liquid cooled 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
    • 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
    • F28D7/16—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 in parallel spaced relation
    • F28D7/1684—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 in parallel spaced relation the conduits having a non-circular cross-section
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • 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
    • F28D2021/0082—Charged air coolers
    • 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

  • the present invention relates to a heat exchanger.
  • present invention relates to a heat exchanger having at least two set of heat exchange elements fluidically connected and physically isolated with each other by an external component.
  • Charge air coolers are provided in the engine air intake circuit of a vehicle to cool the air flowing into the engine.
  • the charge air cooler may be placed downstream of a turbocharger or supercharger of the vehicle.
  • the charge air cooler receives the hot air from the turbocharger and reduces the temperature of the hot air before entering the air into the engine.
  • the charge air coolers or intercoolers include two fluid circuits, one being a coolant circuit and other being an airflow circuit.
  • the hot air is provided into the airflow circuit of the charge air coolers and it exchanges heat with the coolant circuit defined in the charge air coolers.
  • the charge air cooler includes a core in which the two fluids circuits are defined.
  • the high temperature section and the low temperature section have different sets of heat exchange elements, and the airflow may enter into the high temperature section of the core and exit from the low temperature section of the core.
  • the heat exchange elements in the high temperature section may be directly connected to the heat exchange elements in the low temperature section.
  • both sets of the heat exchange elements may have different cooling circuits.
  • the thermal expansion of the heat exchange elements of the high temperature section may be bigger than that of the heat exchange elements of the low temperature section, some portion of the heat exchange elements in the low temperature circuit may experience thermal shock, due to uneven temperature gradient. As a result, the heat exchange element in the low temperature section may damage, thereby service life and efficiency of the charge air cooler are reduced.
  • a heat exchanger provided with two different heat exchange tube types having a smooth temperature gradient. Further, there is a need for a heat exchanger provided with a decoupling element disposed between heat exchange elements of a high temperature section and heat exchange elements of a low temperature section of the heat exchanger.
  • 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.
  • the present invention relates to a heat exchanger for heat exchange between a first fluid and at least one second fluid.
  • the heat exchanger includes a plurality of first heat exchange elements, a plurality of second heat exchange elements and a decoupling element.
  • the plurality of first heat exchange elements is extended between a first header and a second header for conveying the first fluid
  • the plurality of second heat exchange elements is extended between a third header and a fourth header for conveying the first fluid.
  • the second heat exchange elements are arranged downstream to the first heat exchange elements with respect to the first fluid flow direction. Further, the second heat exchange elements are fluidly connected in series to the first heat exchange elements.
  • the decoupling element is provided in between the second header and the third header and is adapted to fluidically connect the first heat exchange elements with the second heat exchange elements.
  • the heat exchanger includes a first housing for at least one second fluid, adapted to at least partially encapsulate the first heat exchange elements and a second housing for the second fluid, adapted to at least partially encapsulate the second heat exchange elements.
  • the second fluid is adapted to flow in between tubes in the first heat exchange elements and the second exchange elements in a direction transverse to the first fluid flow direction.
  • the heat exchanger further includes two different second fluids, one second fluid being adapted to flow in between in the first heat exchange elements in a direction transverse to the first fluid flow direction and other second fluid being adapted to flow in between the second heat exchange elements in a direction transverse to the first fluid flow direction.
  • the decoupling element includes a hollow space adapted to transfer the first fluid from the first heat exchange element to the second heat exchange elements.
  • the decoupling element includes protruded portions formed on both peripheral ends of the decoupling element, and adapted to connect with the second header and third header.
  • the second header and the third header includes grooves complementary to and adapted to receive the protruded portions of the decoupling element.
  • end projections of the grooves formed on the second header and the third header are crimped on the protruded portions of the decoupling element.
  • the heat exchanger further includes a first sealing element disposed in the groove formed on the second header, and a second sealing element disposed in the groove formed on the third header.
  • the decoupling element further includes at least one rib formed on the outer surface of the decoupling element in a longitudinal direction along the decoupling element.
  • the rib is adapted to be coupled with at least one notch formed on the edges of the second header and the third header.
  • the decoupling element is made by any one of a plastic material and metal.
  • the heat exchanger is configured for an operation as charge air cooler, the first fluid being air and the second fluids being liquid coolant.
  • the heat exchanger includes a pair of tanks adapted to be connected to the first header and the fourth header to introduce and receive the first fluid into/from the first and second heat exchange elements.
  • the second header and the third header are connected with each other exclusively through the decoupling element.
  • the present invention envisages a heat exchanger, in particular an intercooler, provided in an airflow circuit of an engine of a vehicle.
  • the intercooler also referred to as charge air cooler
  • the charge air cooler may include two separate cores, one being a high temperature section and other being a low temperature section. Further, both sections of the core are connected together and in series with each other. In such case, the low temperature section core may experience thermal shock due to uneven temperature gradient between both cores. As a result, the heat exchange tubes in the low temperature section core may damage due to thermal shock.
  • a decoupling element is provided between the high temperature section core and a low temperature section core.
  • the decoupling element may help to smoothen the temperature gradient between both sections of cores. Geometry and placement of the decoupling element are described below with respect to the forthcoming drawings.
  • Figs. 1 , 2 and 3 illustrate different schematic views of a heat exchanger 100 in accordance with an embodiment of the invention.
  • the heat exchanger 100 is provided in an airflow circuit of an engine of a vehicle.
  • the heat exchanger 100 is a charge air cooler or an intercooler.
  • Fig. 1 is a general schematic view of the heat exchanger 100
  • Fig. 2 is another schematic view of the heat exchanger 100 without housings, showing heat exchange elements
  • Fig. 3 is an exploded view of the heat exchanger 100 showing configuration of a decoupling element 202 with respect to the heat exchange elements.
  • the heat exchanger 100 may include two different cores, and both cores may be distanced from each other.
  • one core may be a high temperature section core and other may be a low temperature section core.
  • the heat exchanger 100 includes first heat exchange elements 106 and second heat exchange elements 114.
  • the first heat exchange elements 106 and the second heat exchange elements 114 are heat exchange tubes.
  • the first heat exchange elements 106 are extended between a first header 102 and a second header 104 for conveying a first fluid 118.
  • the second heat exchange elements 114 hereinafter referred to as the second tubes, are extended between a third header 110 and a fourth header 112 for conveying the first fluid 118.
  • the second tubes 114 are arranged downstream to the first tubes 106, in such a way that the first fluid flows from the first header 102 to the fourth header 112.
  • the second tubes 114 are arranged downstream the first tubes 106 with respect to the first fluid flow direction.
  • the second tubes 114 are fluidically connected in series to the first tubes 106 to receive the first fluid.
  • the first tubes 106 are stacked together to form the first core and the second tubes 114 are stacked together to form the second core. Further, fins may be provided in-between tubes in the first tubes 106 and in-between the second tubes 114.
  • the heat exchanger 100 further includes a first housing 108 and a second housing 116.
  • the first housing 108 is adapted to at least partially encapsulate the first tubes 106 and the second housing 116 is adapted to at least partially encapsulate the second tubes 114.
  • the first housing 108 and the second housing 116 are provided in the heat exchanger to define at least one second fluid flow in the heat exchanger 100.
  • the first fluid 118 flows through the first tubes 106 and the second tubes 114 from the first header 102 to the fourth header 112
  • the second fluid 120A-B flows in between tubes in the first tubes 106 and the second tubes 114 in a direction transverse to the first fluid flow direction.
  • the heat exchanger 100 may include two different second fluids 120A-B adapted to flow in between the first tubes 106 and the second tubes 114 respectively, and both second fluids 120A-B are fisolated from each other.
  • one second fluid 120 may flow in between the first tubes 106 and other second fluid 120 may flow in between the second tubes 114.
  • one second fluid 120A may be connected to an engine cooling circuit and another second fluid 120B may be connected to a low temperature radiator.
  • the heat exchanger 100 includes one second fluid 120 adapted to flow in both the first and second tubes 106, 114.
  • the second fluid 120A-B flowing out from the first housing 108 is provided back to the second housing 116 to flow in-between the second tubes 114.
  • the heat exchanger 100 is configured for an operation as charge air cooler, wherein the first fluid is air and the second fluid is a liquid coolant.
  • the heat exchanger 100 further includes a pair of tanks 122A-B adapted to connect to the first header 102 and the fourth header 112 respectively to enable the first fluid flow 118 in and out of the heat exchanger 100.
  • the tank 122A is connected to the first header 102 to introduce the first fluid 118 into the first tubes 106
  • the tank 122B is connected to the fourth header 112 to receive the first fluid 118 from the second tubes 114.
  • the heat exchanger 100 further includes a first set with inlet and outlet 124A-B provided on the first housing 108 and a second set with inlet and outlet 126A-B provided on the second housing 116.
  • the first set with inlet and outlet 124A-B is adapted to enable the second fluid flow 120A in between the first tubes 106 in a direction transverse to the first fluid flow direction and the second set with inlet and outlet 126A-B is adapted to enable the second fluid flow 120B in-between the second tubes 114 in a direction transverse to the first fluid flow direction.
  • the heat exchanger 100 further includes a decoupling element 202 provided in between the second header 104 and the third header 110, so that the decoupling element 202 can separate the second tubes 114 from the first tubes 106, yet fluidically connect the second tubes 114 with the first tubes 106.
  • the decoupling element 202 is adapted to fluidically connect the first tubes 106 with the second tubes 114.
  • the decoupling element 202 is made by any one of a plastic material or metal.
  • Fig. 4 illustrates a perspective view of the decoupling element 202 of Fig. 1 .
  • the decoupling element 202 includes a hollow space 208 adapted to transfer the first fluid 118 from the first tubes 106 to the second tubes 114. As the decoupling element 202 has the hollow space 208, the decoupling element 202 can transfer the first fluid from the first tubes 106 to the second tubes 114 without significant pressure drop.
  • the decoupling element 202 includes protruded portions 204 formed on both ends of the decoupling element 202. Particularly, the protruded portions 204 are formed on the both ends of the decoupling element 202. In one example, the protruded portions 204 are formed on the periphery of the decoupling element 202.
  • the protruded portions 202 are adapted to be coupled to the second header 104 and the third header 110 to enable a fluid tight connection between the decoupling element 202 and the second and third headers 104, 110.
  • the decoupling element 202 comprises lateral walls 210 defining the hollow space 208, and the protruded portions 204 are formed on the ends of the lateral walls 210 of the decoupling element 202.
  • the decoupling element 202 is adapted to the shape of the second header 104 and the third header 110.
  • the protruded portions 204 are formed throughout the periphery of the decoupling element 202.
  • the protruded portions 204 may formed on the periphery of the decoupling element 202 at a predetermined distance with respect to each other.
  • Fig. 5 illustrates an exploded view of the second header 104 with a sealing element 304A and the decoupling element 202 of Fig. 4 .
  • the heat exchanger 100 includes first and second sealing elements 304A and 304B. As shown in Fig. 4 , the first sealing element 304A is provided in contact with the protruded portion 204 defined on a side of the decoupling element 202 and the second sealing element 304B is provided in contact with the protruded portion 204 defined on other side of the decoupling element 202.
  • the protruded portions 204 may be adapted to be received in grooves 302A-B defined on the second header 104 and the third header 110.
  • both grooves 302A-B are shown in the cross-sectional view of the heat exchanger 100 as Fig. 6 .
  • the decoupling element 202 includes at least one rib 206 formed on the outer surface of the decoupling element 202 in a longitudinal direction along the decoupling element 202.
  • the second and third headers 104, 110 include notches 308 formed on the edges of the second and third headers 104, 110 to receive the ribs 206 formed on the decoupling element 202, when the protruded portions 204 of the decoupling element 202 are received in the grooves 302A-B of the second header 104 and the third header 110.
  • the ribs 206 are adapted to be received in the notches 308 of the second and third headers 104, 110 to effectively position the decoupling element 202 with the second and third headers 104, 110.
  • Fig. 6 illustrates a cross-section view of the heat exchanger 100 of Fig. 2 , cut along a longitudinal axis of the heat exchanger 100.
  • the second header 104 and the third header 110 are connected with each other exclusively through the decoupling element 202.
  • the second header 104 may include the groove 302A to receive the first sealing element 304A
  • the third header 110 may include the groove 302B to receive the second sealing element 304B.
  • the first sealing element 304A is provided in the groove 302A defined on the second header 104 and the second sealing element 304B is provided in the groove 302B defined on the third header 110.
  • respective protruded portions 204 of the decoupling element 202 are received in the grooves 302A-B of the second and third headers 104, 110.
  • the protruded portions 204 of the decoupling element 202 are received in the respective grooves 302A-B of the second and third header 104, 110, in such a way that the first and second sealing elements 304A-B lies between the protruded portions 204 and the inner surface of the respective grooves 302A-B.
  • the grooves 302A-B may include end projections 306 adapted to be crimped on the respective protruded portions 204 of the decoupling element 202 to enable rigid connection between the decoupling element 202 and the second and third headers 104, 110.
  • the first and second sealing elements 304A-B provide a fluid tight connection between the decoupling element 202 and the second and third headers 104, 110. Therefore, the first tubes 106 are physically isolated from the second tubes 114, yet fluidically connected with each other.
  • the first tubes 106 are a high temperature section and the second tubes 114 are a low temperature section.
  • the temperature of the first fluid 118 entering into the first tubes is bigger than the temperature of the first fluid 118 flowing in the second tubes 114.
  • the first fluid 118 flowing in the first tubes 106 exchanges heat with the second fluid 120 flowing in between the first tubes 106.
  • the first fluid 118 enters the second tubes 114 through the decoupling element 204 and exchanges heat with the second fluid 120 flowing in between the second tubes 114.
  • the present invention is described with respect to the charge air cooler, it can be applied to any heat exchanger as long as the heat exchanger has two sets of heat exchange tubes connected in series with each other.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP20214345.9A 2020-12-15 2020-12-15 Wärmetauscher Pending EP4015975A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20214345.9A EP4015975A1 (de) 2020-12-15 2020-12-15 Wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20214345.9A EP4015975A1 (de) 2020-12-15 2020-12-15 Wärmetauscher

Publications (1)

Publication Number Publication Date
EP4015975A1 true EP4015975A1 (de) 2022-06-22

Family

ID=73854672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20214345.9A Pending EP4015975A1 (de) 2020-12-15 2020-12-15 Wärmetauscher

Country Status (1)

Country Link
EP (1) EP4015975A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351845A1 (de) * 2003-11-06 2005-06-16 Mtu Friedrichshafen Gmbh Abgaswärmetauscher
EP2628896A2 (de) * 2012-02-14 2013-08-21 Behr GmbH & Co. KG Wärmeübertrageranordnung
US20140000845A1 (en) * 2012-06-29 2014-01-02 Doug Vanderwees Heat Exchangers with Floating Headers
EP3388769A1 (de) * 2017-04-10 2018-10-17 Hamilton Sundstrand Corporation Wärmetauscherbaugruppe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10351845A1 (de) * 2003-11-06 2005-06-16 Mtu Friedrichshafen Gmbh Abgaswärmetauscher
EP2628896A2 (de) * 2012-02-14 2013-08-21 Behr GmbH & Co. KG Wärmeübertrageranordnung
US20140000845A1 (en) * 2012-06-29 2014-01-02 Doug Vanderwees Heat Exchangers with Floating Headers
EP3388769A1 (de) * 2017-04-10 2018-10-17 Hamilton Sundstrand Corporation Wärmetauscherbaugruppe

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