US20080185130A1 - Heat exchanger with extruded cooling tubes - Google Patents

Heat exchanger with extruded cooling tubes Download PDF

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Publication number
US20080185130A1
US20080185130A1 US11/672,326 US67232607A US2008185130A1 US 20080185130 A1 US20080185130 A1 US 20080185130A1 US 67232607 A US67232607 A US 67232607A US 2008185130 A1 US2008185130 A1 US 2008185130A1
Authority
US
United States
Prior art keywords
heat exchanger
extruded
tubes
fluid paths
fluid
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.)
Abandoned
Application number
US11/672,326
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English (en)
Inventor
Lei Fang
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.)
Mahle Behr USA Inc
Original Assignee
Behr America Inc
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 Behr America Inc filed Critical Behr America Inc
Priority to US11/672,326 priority Critical patent/US20080185130A1/en
Assigned to BEHR AMERICA reassignment BEHR AMERICA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FANG, LEI
Priority to EP08002249A priority patent/EP1956331A2/de
Publication of US20080185130A1 publication Critical patent/US20080185130A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • 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
    • 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
    • F28D2021/0089—Oil coolers
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Definitions

  • the present invention relates to a heat exchanger in general, and the tubes used in a heat exchanger in particular.
  • a heat exchanger including cooling tubes made according to the present invention is particularly advantageous in terms of ease of construction and manufacturing costs.
  • Oil-to-air coolers are widely used in motor vehicle applications to cool engine oil, transmission oil, power steering oil and hydraulic fluids.
  • the cooler usually consists of bundles of tubes, fins and two manifolds.
  • the oil flows inside the tubes while outside air passes through the fins.
  • Due to the high viscosity of the oil internal turbulators are often disposed within oil-cooling tubes to improve heat transfer.
  • the turbulators are typically bonded to the internal walls of the oil-cooling tubes to allow heat flow from the turbulators to the tube walls.
  • an embossed plate replaces turbulators within the oil-cooling tubes.
  • the plate includes uniformly spaced-apart mating projections, which, when brought together during the assembly process, create additional surface area to enhance the transfer of heat from the oil during operation of the heat exchanger.
  • the plate sizes are fixed, which makes assembly of different cooler sizes difficult. Also, there is a risk of two plates not properly bonding together, which could result in leaks and loss of heat transfer.
  • the invention is generally directed to a heat exchanger for a motor vehicle, such as an oil-to-air heat exchanger, a charge air heat exchanger or an exhaust gas heat exchanger, which heat exchanger includes internal cooling tubes formed by extruding a suitable material, such as aluminum, steel, or stainless steel.
  • the cooling tubes include a plurality of fluid paths, which are also extruded as part of the tube-forming process.
  • the transverse cross-section of the fluid paths is typically rectangular.
  • the walls of the fluid paths may be smooth or, alternatively, contain flanges, ribs or teeth to improve heat transfer.
  • All of the fluid paths within a particular tube may be identical.
  • a tube may contain a plurality of fluid paths, certain of which differ in cross-section from others.
  • the one-piece extruded cooling tubes are assembled into a heat exchanger, either with other similarly extruded tubes or with cooling tubes of a more conventional design.
  • FIG. 1 is a drawing that schematically illustrates a heat exchanger
  • FIG. 2 is a transverse cross-sectional view of a prior art tube taken along the line 2 - 2 in FIG. 1 ;
  • FIG. 3 is a transverse cross-sectional view of an extruded tube according to one embodiment of the invention.
  • FIG. 4 is a transverse cross-sectional view of an extruded tube according to another embodiment of the invention.
  • FIG. 5 is a transverse cross-sectional view of yet another possible variant of a tube made according to the invention.
  • FIG. 6 is a drawing that schematically illustrates a heat exchanger that includes a combination of different types of cooling tubes.
  • FIG. 7 is a drawing that schematically illustrates a heat exchanger that includes two separate coolant loops.
  • a heat exchanger such as that schematically illustrated in FIG. 1 , typically includes an inlet manifold 2 , an outlet manifold 5 , a plurality of flat cooling tubes 6 a - 6 e disposed between the inlet and the outlet, and air-cooled fins 7 disposed between the rows of the cooling tubes.
  • the type of heat exchanger illustrated in FIG. 1 is a direct heat exchanger, i.e., air is forced or drawn across fluid containing tubes
  • the invention may be used with other types of heat exchangers known to persons of skill in the art.
  • the invention may be applied, for example, to indirect heat exchangers in which cooling tubes are cooled by a liquid coolant, such as water, that is separately cooled by yet another air exchanger.
  • a pump forces fluid from the inlet 2 of heat exchanger 1 , through the plurality of cooling tubes 6 a - 6 e, and into the heat exchanger outlet 3 .
  • Outside air or coolant
  • Heat from the fluid passing through the exchanger is transferred to the air passing across fins 7 and, ultimately, out and away from the motor vehicle.
  • the arrows near inlet 2 and outlet 3 illustrate the direction of fluid flow within heat exchanger 1 .
  • FIG. 2 illustrates a transverse cross-section of a common prior art oil-cooling tube 6 a taken along section 2 - 2 of FIG. 1 .
  • tube 6 a includes a turbulator 8 , which promotes heat transfer within the tube for the relatively low viscosity oil.
  • the turbulator is a separate component that must be properly bonded to the tube 6 a.
  • the ends of tube 6 a are assembled to the inlet and outlet manifolds in a manner known to persons of skill in the art.
  • the cooling tubes of one embodiment of the invention differs from the prior art as illustrated in the transverse cross-section of FIG. 3 .
  • a flat cooling tube 10 is formed through an extrusion process and includes a plurality of fluid-flow paths 11 a - 11 i, which are also formed during extrusion of the tube.
  • Each flow path typically has a rectangular cross-section as illustrated, but persons of skill in the art will appreciate other shapes that may be used, such as rounded or oval shapes.
  • the separate flow paths within each tube eliminate the need for a turbulator component, thereby resulting in a one-piece tube that is simple to manufacture and assemble into a heat exchanger.
  • a one-piece tube also reduces the risk of fluid leaking from the tube due to an improper assembly.
  • cooling tubes formed through extrusion may be cut to an appropriate length for a variety of sizes of heat exchangers, thereby allowing maximum flexibility during the manufacturing and assembly processes.
  • Tubes such as cooling tube 10 are assembled to the inlet and outlet manifolds of a heat exchanger in a manner known to persons of skill in the art.
  • tube 10 may be assembled to an inlet and outlet manifold through a Nocolock controlled-atmosphere brazing process.
  • Tube 10 is preferably formed from metal.
  • tube 10 may be extruded from any suitable metal, such as aluminum, steel or stainless steel.
  • Tube 10 includes a major axis, indicated by the “H” dimension, and a minor axis, indicated by the “W” dimension. It has been empirically determined that the preferred range of the external cross-sectional area for an extruded one-piece oil cooler tube, which is calculated as the product of H and W, should be between 45 and 160 mm 2 for automotive applications. If the cross-sectional area is above 160 m 2 , the heat transfer per volume of oil flow will not be sufficient. If the cross-sectional area is below 45 mm 2 , the internal oil pressure drop will be too high, which, in turn, will result in insufficient oil flow. In addition, it has been determined that the preferred hydraulic diameter of the tube, which is defined as four times the internal area of the tube divided by wetted perimeter, should be between 1.2 mm to 3.5 mm.
  • FIG. 4 illustrates an alternative embodiment of the invention.
  • the extruded tube 12 still includes a plurality of extruded fluid paths 13 a - 13 e. The number of such fluid paths, however, have been reduced in comparison with the embodiment of FIG. 3 .
  • the smooth-walled fluid paths 11 a - 11 i of the embodiment of FIG. 3 have been replaced with fluid paths 13 a - 13 e that have “teeth” or flanges 16 formed, by extrusion, into the side walls.
  • the flanges 16 may be identically-patterned on all sides of the fluid path, or, as shown in FIG. 3 , may include a first pattern 16 along a wall or walls and a second pattern 17 along a different wall or walls. Protrusions, such as flanges 16 and 17 , into the fluid paths 13 a - 13 e promote the additional transfer of heat.
  • the number of fluid paths within an extruded tube may be selected to obtain the desired pressure drop and/or amount of heat transfer for a particular application.
  • the fluid paths within a particular tube may differ from one another.
  • FIG. 5 illustrates an example embodiment in which different types of fluid paths are incorporated into a single tube.
  • Fluid path 15 a includes flanges 16 and 17
  • fluid path 15 b is smooth-walled.
  • fluid path 15 c includes flanges of one type 17 along two walls
  • fluid path 15 d includes flanges of a different type 16 along a different wall.
  • the dimensions of the flanges, teeth or other protrusions are selected to optimize the heat transfer characteristics of the heat exchanger.
  • such protrusions have a feature size that relates to the size of the fluid path.
  • the dimension of flanges 16 along the “W” axis is preferably between 10-30% of the opening of the fluid path along the same axis.
  • the dimension of these same flanges along the “H” axis is preferably between 50-75% of the opening of the fluid path along the same axis, with individual flanges having dimensions ranging between 6-15% of the opening.
  • Flanges 17 will have similar general dimensions, but such dimensions will be transposed along the “W” and “H” axes when compared with flanges 16 .
  • a heat exchanger may be assembled with different types of tubes.
  • a first type of cooling tube such as prior art tube 6 a with a turbulator component 8 , may be assembled along with a second type of cooling tube, such as extruded metal tube 10 , and a third type of cooling tube, such as extruded metal tube 12 .
  • Metal tubes 10 and 12 may be extruded from any suitable metal, such as aluminum, steel or stainless steel.
  • the tubes made according to the invention also can be used for cooling applications such as hybrid vehicle electronics. Usually such electronics are cooled by a separate coolant loop due to their relatively lower temperature operating characteristics (below 70 C). Due to limited pump power in this second loop, however, the coolant flow is relatively lower when compared with the main radiator.
  • Prior art radiator tubes such as those illustrated in FIG. 2 , are not well suited for this kind of application because there is not sufficient internal surface within such tubes to transfer heat. Tubes made according to the invention, as describe above, typically will have more surface area to transfer heat. FIG.
  • FIG. 7 illustrates an exemplary arrangement of tubes within a combination heat exchanger that includes a first coolant loop or circuit for fluid cooling, schematically indicated by a first inlet manifold 4 and a first outlet manifold 5 and first bundle of tubes 10 a - 10 c, and a second coolant loop or circuit for coolant cooling, schematically indicated schematically indicated by a second inlet manifold 20 and a second outlet manifold 21 and second bundle of tubes 10 d - 10 e.
  • the first bundle of tubes 10 a - 10 c is of the same type as the second bundle of tubes 10 d - 10 e.
  • the benefit of such an arrangement is that a single tube type can be disposed within a single heat exchanger, but between separate inlet and outlet chambers for different cooling applications.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US11/672,326 2007-02-07 2007-02-07 Heat exchanger with extruded cooling tubes Abandoned US20080185130A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/672,326 US20080185130A1 (en) 2007-02-07 2007-02-07 Heat exchanger with extruded cooling tubes
EP08002249A EP1956331A2 (de) 2007-02-07 2008-02-07 Wärmetauscher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/672,326 US20080185130A1 (en) 2007-02-07 2007-02-07 Heat exchanger with extruded cooling tubes

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EP (1) EP1956331A2 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090065183A1 (en) * 2007-09-06 2009-03-12 Showa Denko K.K. Flat heat transfer tube
US20090159253A1 (en) * 2007-12-21 2009-06-25 Zaiqian Hu Heat exchanger tubes and combo-coolers including the same
US20100064717A1 (en) * 2008-09-17 2010-03-18 Mark Burn Ice machines with extruded heat exchanger
US20110000657A1 (en) * 2008-01-10 2011-01-06 Jens Ruckwied Extruded tube for a heat exchanger
US20120193075A1 (en) * 2009-09-03 2012-08-02 Wilfried-Henning Reese System for heating and/or cooling a medium
WO2014014407A2 (en) 2012-07-19 2014-01-23 Gränges Ab Compact aluminium heat exchanger with welded tubes for power electronics and battery cooling
US20140216702A1 (en) * 2011-07-25 2014-08-07 Valeo Systemes Thermiques Heat-Exchanger Plate
WO2016004064A1 (en) * 2014-06-30 2016-01-07 Faster Faster Inc. Integrated chassis heatsink for electric vehicles
US20180209747A1 (en) * 2016-04-14 2018-07-26 Qingdao Haier Special Refrigerator Co., Ltd. Heat conducting plate and method for producing plate body thereof
US20180313610A1 (en) * 2015-10-29 2018-11-01 Uacj Corporation Extruded aluminum flat multi-hole tube and heat exchanger
US10436520B2 (en) * 2017-03-31 2019-10-08 Korea Advanced Institute Of Science And Technology Plate pulsating heat spreader with artificial cavities
US20200318855A1 (en) * 2012-01-19 2020-10-08 Sung-hwan Choi Heat exchanger pipe, method of manufacturing heat exchanger pipe, heat exchanger fin, elliptical heat exchanger pipe, and hot water storage type heat exchanger having elliptical heat exchanger pipe
US20210102743A1 (en) * 2019-10-04 2021-04-08 Hamilton Sundstrand Corporation Enhanced heat exchanger performance under frosting conditions
USD982730S1 (en) * 2019-06-18 2023-04-04 Caterpillar Inc. Tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108286845A (zh) * 2018-03-04 2018-07-17 青岛三友制冰设备有限公司 制冰用单板蒸发器及其运作方法

Citations (9)

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Publication number Priority date Publication date Assignee Title
US4715431A (en) * 1986-06-09 1987-12-29 Air Products And Chemicals, Inc. Reboiler-condenser with boiling and condensing surfaces enhanced by extrusion
US5009262A (en) * 1990-06-19 1991-04-23 General Motors Corporation Combination radiator and condenser apparatus for motor vehicle
US5036911A (en) * 1989-02-24 1991-08-06 Long Manufacturing Ltd. Embossed plate oil cooler
US5036909A (en) * 1989-06-22 1991-08-06 General Motors Corporation Multiple serpentine tube heat exchanger
US6000467A (en) * 1997-05-30 1999-12-14 Showa Aluminum Corporation Multi-bored flat tube for use in a heat exchanger and heat exchanger including said tubes
US6357522B2 (en) * 1998-10-01 2002-03-19 Behr Gmbh & Co. Multi-channel flat tube
US6536255B2 (en) * 2000-12-07 2003-03-25 Brazeway, Inc. Multivoid heat exchanger tubing with ultra small voids and method for making the tubing
US20040069477A1 (en) * 2000-11-24 2004-04-15 Naoki Nishikawa Heat exchanger tube and heat exchanger
US6793012B2 (en) * 2002-05-07 2004-09-21 Valeo, Inc Heat exchanger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715431A (en) * 1986-06-09 1987-12-29 Air Products And Chemicals, Inc. Reboiler-condenser with boiling and condensing surfaces enhanced by extrusion
US5036911A (en) * 1989-02-24 1991-08-06 Long Manufacturing Ltd. Embossed plate oil cooler
US5036909A (en) * 1989-06-22 1991-08-06 General Motors Corporation Multiple serpentine tube heat exchanger
US5009262A (en) * 1990-06-19 1991-04-23 General Motors Corporation Combination radiator and condenser apparatus for motor vehicle
US6000467A (en) * 1997-05-30 1999-12-14 Showa Aluminum Corporation Multi-bored flat tube for use in a heat exchanger and heat exchanger including said tubes
US6357522B2 (en) * 1998-10-01 2002-03-19 Behr Gmbh & Co. Multi-channel flat tube
US20040069477A1 (en) * 2000-11-24 2004-04-15 Naoki Nishikawa Heat exchanger tube and heat exchanger
US6536255B2 (en) * 2000-12-07 2003-03-25 Brazeway, Inc. Multivoid heat exchanger tubing with ultra small voids and method for making the tubing
US6793012B2 (en) * 2002-05-07 2004-09-21 Valeo, Inc Heat exchanger

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090065183A1 (en) * 2007-09-06 2009-03-12 Showa Denko K.K. Flat heat transfer tube
US20090159253A1 (en) * 2007-12-21 2009-06-25 Zaiqian Hu Heat exchanger tubes and combo-coolers including the same
US20110000657A1 (en) * 2008-01-10 2011-01-06 Jens Ruckwied Extruded tube for a heat exchanger
US20100064717A1 (en) * 2008-09-17 2010-03-18 Mark Burn Ice machines with extruded heat exchanger
US8132424B2 (en) * 2008-09-17 2012-03-13 Integrated Marine Systems, Inc. Ice machines with extruded heat exchanger
US20120193075A1 (en) * 2009-09-03 2012-08-02 Wilfried-Henning Reese System for heating and/or cooling a medium
US20140216702A1 (en) * 2011-07-25 2014-08-07 Valeo Systemes Thermiques Heat-Exchanger Plate
US20200318855A1 (en) * 2012-01-19 2020-10-08 Sung-hwan Choi Heat exchanger pipe, method of manufacturing heat exchanger pipe, heat exchanger fin, elliptical heat exchanger pipe, and hot water storage type heat exchanger having elliptical heat exchanger pipe
WO2014014407A2 (en) 2012-07-19 2014-01-23 Gränges Ab Compact aluminium heat exchanger with welded tubes for power electronics and battery cooling
WO2016004064A1 (en) * 2014-06-30 2016-01-07 Faster Faster Inc. Integrated chassis heatsink for electric vehicles
US9415673B2 (en) 2014-06-30 2016-08-16 Faster Faster Inc. Integrated chassis heatsink for electric vehicles
US20180313610A1 (en) * 2015-10-29 2018-11-01 Uacj Corporation Extruded aluminum flat multi-hole tube and heat exchanger
US11009295B2 (en) * 2015-10-29 2021-05-18 Uacj Corporation Extruded aluminum flat multi-hole tube and heat exchanger
US20180209747A1 (en) * 2016-04-14 2018-07-26 Qingdao Haier Special Refrigerator Co., Ltd. Heat conducting plate and method for producing plate body thereof
US10436520B2 (en) * 2017-03-31 2019-10-08 Korea Advanced Institute Of Science And Technology Plate pulsating heat spreader with artificial cavities
USD982730S1 (en) * 2019-06-18 2023-04-04 Caterpillar Inc. Tube
US20210102743A1 (en) * 2019-10-04 2021-04-08 Hamilton Sundstrand Corporation Enhanced heat exchanger performance under frosting conditions
US11525618B2 (en) * 2019-10-04 2022-12-13 Hamilton Sundstrand Corporation Enhanced heat exchanger performance under frosting conditions

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Publication number Publication date
EP1956331A2 (de) 2008-08-13

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Owner name: BEHR AMERICA, MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FANG, LEI;REEL/FRAME:019168/0277

Effective date: 20070410

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION