US20180058765A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
US20180058765A1
US20180058765A1 US15/679,504 US201715679504A US2018058765A1 US 20180058765 A1 US20180058765 A1 US 20180058765A1 US 201715679504 A US201715679504 A US 201715679504A US 2018058765 A1 US2018058765 A1 US 2018058765A1
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US
United States
Prior art keywords
channels
heat exchanger
heat
coolant medium
exchanger block
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
US15/679,504
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English (en)
Inventor
Vladimir PARFENOV
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.)
Autokuehler GmbH and Co KG
Original Assignee
Autokuehler GmbH and Co KG
AKG Thermotechnik International GmbH and Co KG
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 Autokuehler GmbH and Co KG, AKG Thermotechnik International GmbH and Co KG filed Critical Autokuehler GmbH and Co KG
Assigned to Autokühler GmbH & Co. KG reassignment Autokühler GmbH & Co. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PARFENOV, VLADIMIR
Assigned to AKG THERMOTECHNIK INTERNATIONAL GMBH & CO. KG reassignment AKG THERMOTECHNIK INTERNATIONAL GMBH & CO. KG CORRECTIVE ASSIGNMENT TO CORRECT THE NAME OF THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 043321 FRAME 0530. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: PARFENOV, VLADIMIR
Publication of US20180058765A1 publication Critical patent/US20180058765A1/en
Abandoned legal-status Critical Current

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    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0366—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 plate-like or laminated conduits the conduits being formed by spaced plates with inserted elements
    • 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
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05333—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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/14—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by endowing the walls of conduits with zones of different degrees of conduction of heat
    • 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
    • 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
    • F28D2021/0091—Radiators
    • F28D2021/0094—Radiators for recooling the engine coolant
    • 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
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal 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
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/08—Assemblies of conduits having different features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for 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
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements
    • 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

Definitions

  • Exemplary embodiment of the present invention relate to a heat exchanger.
  • Heat exchangers used for high-temperature applications are subjected to substantial cyclic thermal tensions as a result of cyclic changes of the temperature and flow rate of process media guided through the heat exchanger.
  • the cyclic change of temperature and flow rate of the process medium correspondingly results in a cyclic change of the temperature of the individual components of the heat exchanger, in particular the components of a heat exchanger block, which consists of process channels, coolant medium channels, end plates, lateral parts, and the like, and the collector boxes adjoining thereon, and a cyclically occurring material expansion or compression of the various heat exchanger components which accompanies this.
  • a reduction of the thermal tensions can be achieved by the use of flexible components in the heat exchanger block.
  • Such heat exchangers are known, for example, from German patent documents DE 202 08 748 U1 and 20 2011 052 186 U1, in which flexible block profiles are used in an edge region of the heat exchanger block, adjoining a collector box, which hold the process channels of the heat exchanger block arranged parallel to one another spaced apart and form the flow channels of the coolant medium together with the fins arranged between the process channels.
  • edge process channels in the block length direction For stiffening the edge process channels in the block length direction, manufacturing them from thicker partition plates than the further partition plates used in the interior of the heat exchanger block is also known.
  • the maximum material temperature difference between the edge process channels and the process channels arranged adjacent thereto further into the interior of the heat exchanger block does not thus change. A further tension reduction is therefore not achievable by this measure.
  • the maximum material temperature difference between two adjoining process channels can reach up to 20 K or even up to 40 K in running operation in critical block regions in the heat exchangers considered here.
  • Exemplary embodiments of the present invention are directed to a heat exchanger having lengthened service life and lower risk of cracks.
  • a heat exchanger according to the invention has a heat exchanger block, a first collector box, which is arranged on a first end face of the heat exchanger block, and a second collector box, which is arranged on a second end face of the heat exchanger block opposite to the first end face of the heat exchanger block.
  • the heat exchanger block has multiple process channels, which are arranged in parallel to one another and connect the first collector box to the second collector box, for through flow of a process medium, and also multiple coolant medium channels for through flow of a coolant medium, wherein the coolant medium channels are arranged between the process channels, wherein adjacent process channels are formed having different material masses and/or heat-transferring areas of different sizes and/or structural flow resistances of different sizes and/or coolant medium channels are formed having different material masses and/or heat-transferring areas of different sizes, so that in operation, in the event of a cyclic temperature change of the process medium, an equal or nearly equal material temperature gradient results between adjacent process channels and lateral parts in the heat exchanger block.
  • the process channels, coolant medium channels, and lateral parts are formed so that an equal or nearly equal cyclic change of the material temperatures of adjacent process channels is reached, whereby the maximum temperature difference between the process channels, in particular in the critical block regions, is reduced by at least two or three times in relation to the construction of heat exchangers known from the prior art.
  • the process channels having higher heat-transfer rate than the process channels adjoining them are formed having an up to three times greater material mass and/or having an up to three times smaller heat-transferring area and/or having an up to five times greater structural flow resistance than the adjoining process channels.
  • Such different material masses are achieved, for example, by the use of similar passage components such as partition plates, turbulators, or longitudinal profiles having different structural dimensions and also optional additional components, for example, intermediate profiles or the use of pipes having different pipe dimensions, for example, different pipe thicknesses or pipe heights in one process channel in relation to two adjoining process channels.
  • similar passage components such as partition plates, turbulators, or longitudinal profiles having different structural dimensions and also optional additional components, for example, intermediate profiles or the use of pipes having different pipe dimensions, for example, different pipe thicknesses or pipe heights in one process channel in relation to two adjoining process channels.
  • the process channels adjoining a process channel having a higher heat transfer rate than the process channels adjacent thereto are formed having an up to three times smaller heat-transferring area than the adjacent, adjoining process channels in the heat exchanger block.
  • Such a heat-transferring area which is up to three times smaller, can be achieved, for example, by corresponding different structural dimensions, in particular lobe parts of the turbulators or different rib divisions.
  • Heat transfers of different sizes from the process medium to the coolant medium channels thus occur in adjacent process channels, which has the result that the maximum difference between the cyclic material temperatures of the adjoining process channels is reduced in the event of a thermal cyclic stress.
  • the coolant medium channels adjoining a process channel having a higher heat transfer are formed having an up to three times smaller heat-transferring area.
  • the reduction of the heat-transferring area in the above-mentioned coolant medium channels is achieved, for example, by up to three times reduction of the height of the coolant medium channels and/or the use of fins or guide plates in the coolant medium channels having an up to five times greater fin lobe or guide plate division.
  • the process channels enabling a higher heat transfer than the adjoining process channels are formed having up to five times higher structural flow resistances for process medium in comparison to these above-mentioned adjoining process channels.
  • a ratio is thus increased between the flow rates of the process medium in the adjoining process channels.
  • the maximum difference between the cyclic material temperatures in the adjoining process channels is decreased by up to three times, which results in a substantial reduction of the thermal tensions.
  • the end plates/lateral parts are formed having an up to five times smaller material mass than the material mass of the edge process channels.
  • the negative influence of the end plate/lateral part on the cyclic change of the material temperature of the edge process channels is thus reduced, which results in a reduction of the maximum material temperature difference between the edge process channels and adjoining process channels in the heat exchanger block.
  • FIG. 1 shows a schematic perspective view of one embodiment variant of a heat exchanger according to the invention
  • FIG. 2 shows a sectional view A-A of the heat exchanger from FIG. 1 transversely to the flow direction of the process medium with process channels having rectangular channel cross section,
  • FIG. 3 shows a sectional view A-A of the heat exchanger from FIG. 1 transversely to the flow direction of the process medium with process channels having oval channel cross section,
  • FIG. 4 shows a sectional view A-A of the heat exchanger from FIG. 1 transversely to the flow direction of the process medium with process channels having circular channel cross section,
  • FIG. 5 shows a sectional view of the heat exchanger from FIG. 2 along a line B-B, parallel to the flow direction of the process medium
  • FIG. 6 shows a sectional view of the heat exchanger from FIG. 3 along a line C-C parallel to the flow direction of the process medium
  • FIG. 7 shows a sectional view of the heat exchanger from FIG. 4 along a line D-D parallel to the flow direction of the process medium.
  • a heat exchanger block is identified as a whole with the reference sign 1 .
  • the heat exchanger block 1 has multiple separate process channels 2 arranged parallel to one another, which are used for the through flow of a process medium in a direction X from an entry box 3 , which is arranged on a first end face of the heat exchanger block 1 , to an exit box 4 , which is arranged on a second end face of the heat exchanger block 1 .
  • the process channels 2 protrude in this case with respective open ends into the entry box 3 and the exit box 4 .
  • the heat exchanger block 1 furthermore has multiple coolant medium channels 5 for the through flow of a coolant medium.
  • the coolant medium channels 5 are arranged between inner process channels 2 and between edge process channels 6 arranged on an outer edge of the heat exchanger block 1 and also lateral parts 7 , preferably embodied as end plates, in the heat exchanger block 1 .
  • the coolant medium channels 5 are arranged in the heat exchanger block 1 so that a through flow of the coolant medium between the process channels 2 occurs in a transverse direction or a direction parallel to the directional flow Y of the process medium.
  • an inlet nozzle 8 is provided on a head side of the entry box 3 , through which the process medium can be supplied into the entry box 3 .
  • An outlet nozzle 9 is accordingly provided on a head side of the exit box 4 , through which the process medium can be guided out of the exit box 4 .
  • the inlet nozzle 8 and the outlet nozzle can also be arranged on one of the other sides of the entry box 3 or exit box 4 , respectively.
  • the inlet nozzle 8 and outlet nozzle 9 are accommodated in this case in a receptacle opening, which corresponds to the cross section of the inlet nozzle 8 or the outlet nozzle 9 , respectively, in the head side of the entry box 3 or the exit box 4 , respectively.
  • the process channels 2 can be formed having different cross sections.
  • the process channels 2 in the embodiment variant shown in FIG. 2 are thus formed from respective partition plates 10 , between which turbulators 12 or ribs are arranged.
  • a lateral closure of these process channels 2 is achieved here by the use of strips or longitudinal profiles 11 .
  • the process channels 2 are formed as pipes 13 formed having oval channel cross section. Turbulators 12 are inserted into the pipe interior of these pipes 13 in the embodiment variant shown here.
  • the process channels 2 are formed in the form of pipes having circular cross section. As also in the embodiment variant shown in FIG. 3 , multiple such process channels 2 are arranged here perpendicularly to the through flow direction of adjacent to one another and one on top of another.
  • the process channels arranged on an outer edge of the heat exchanger block 1 are provided with the reference sign 6
  • the process channels enclosed by the edge process channels 6 are provided with the reference sign 13 .
  • FIGS. 5 to 7 show that the coolant medium channels 5 are also preferably provided with fins 15 or guide plates 16 .
  • adjacent process channels 2 , 6 and coolant medium channels 5 are formed having different material masses and/or heat-transferring areas of different sizes and/or structural flow resistances of different sizes, so that in operation, a temperature change of the process medium results in an equal or nearly equal material temperature gradient between adjacent process channels 2 , 6 and lateral parts 7 in the heat exchanger block 1 , whereby the maximum temperature difference between individual adjacent process channels is reduced by at least 2 to 3 times in relation to heat exchanger blocks known from the prior art.
  • the material mass of process channels 2 , 6 having higher heat transfer rate than the process channels 2 , 6 adjoining them is formed having an up to three times greater material mass than these adjoining process channels.
  • the heat-transferring area of the process channels 2 , 6 having higher heat transfer rate than the process channels 2 , 6 adjoining them is up to three times smaller than the heat-transferring area of adjoining process channels 2 , 6 . This is achieved, for example, by enlarging the lobe division of turbulators or the use of fewer heat-transferring ribs 14 in the process channels 2 , 6 , into which the hottest component of process medium flows, in relation to the process channels through which a component of the process medium flows which is already partially cooled.
  • respective coolant medium channels 5 which adjoin a process channel 2 , 6 having a higher heat transfer rate than the process channels 2 , 6 adjacent to them, are formed having an up to three times smaller heat-transferring area than adjacent coolant medium channels 5 in the heat exchanger block 1 .
  • coolant medium channels 5 between edge process channels 6 and lateral parts 7 are formed having an up to three times smaller heat-transferring area than other coolant medium channels 5 in the heat exchanger block 1 .
  • the lateral parts 7 are preferably formed having an up to five times smaller material mass than the material mass of the edge process channels 6 .
  • the material temperature gradient between adjacent process channels 2 , 6 and lateral parts 7 in the heat exchanger block 1 upon the through flow of the process channels with the process medium and the through flow of the coolant medium channels with a coolant medium can be kept constant or nearly constant and as small as possible, whereby thermally-related tensions in the heat exchanger block are significantly reduced and therefore the service life of such heat exchangers is lengthened.

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  • 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)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
US15/679,504 2016-08-26 2017-08-17 Heat exchanger Abandoned US20180058765A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016104702.1U DE202016104702U1 (de) 2016-08-26 2016-08-26 Wärmeaustauscher
DE202016104702.1 2016-08-26

Publications (1)

Publication Number Publication Date
US20180058765A1 true US20180058765A1 (en) 2018-03-01

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Family Applications (1)

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US15/679,504 Abandoned US20180058765A1 (en) 2016-08-26 2017-08-17 Heat exchanger

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US (1) US20180058765A1 (de)
DE (2) DE202016104702U1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180328285A1 (en) * 2017-05-11 2018-11-15 Unison Industries, Llc Heat exchanger
US10317150B2 (en) * 2016-11-21 2019-06-11 United Technologies Corporation Staged high temperature heat exchanger
US20190285363A1 (en) * 2018-03-16 2019-09-19 Hamilton Sundstrand Corporation Integral heat exchanger core reinforcement
US20190285351A1 (en) * 2018-03-16 2019-09-19 Hamilton Sundstrand Corporation Parting sheet in heat exchanger core
US11365942B2 (en) 2018-03-16 2022-06-21 Hamilton Sundstrand Corporation Integral heat exchanger mounts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1805917A (en) * 1927-08-04 1931-05-19 Ljungstroms Angturbin Ab Cooler contacting with circulating air
US1940964A (en) * 1931-01-21 1933-12-26 Patrick J Mcintyre Radiator construction
US4791982A (en) * 1986-05-14 1988-12-20 Man Nutzfahrzeuge Gmbh Radiator assembly
US6394176B1 (en) * 1998-11-20 2002-05-28 Valeo Thermique Moteur Combined heat exchanger, particularly for a motor vehicle
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