US20060016582A1 - Fluid agitating fin, method of fabricating the same and heat exchanger tube and heat exchanger or heat exchanging type gas cooling apparatus inwardly mounted with the fin - Google Patents

Fluid agitating fin, method of fabricating the same and heat exchanger tube and heat exchanger or heat exchanging type gas cooling apparatus inwardly mounted with the fin Download PDF

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Publication number
US20060016582A1
US20060016582A1 US11/186,576 US18657605A US2006016582A1 US 20060016582 A1 US20060016582 A1 US 20060016582A1 US 18657605 A US18657605 A US 18657605A US 2006016582 A1 US2006016582 A1 US 2006016582A1
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Prior art keywords
heat exchanger
exchanger tube
plate
fluid
blade edges
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Abandoned
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US11/186,576
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English (en)
Inventor
Yasuaki Hashimoto
Tadahiro Goto
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Usui Kokusai Sangyo Kaisha Ltd
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Usui Kokusai Sangyo Kaisha Ltd
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Assigned to USUI KOKUSAI SANGYO KAISHA LIMITED reassignment USUI KOKUSAI SANGYO KAISHA LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GOTO, TADAHIRO, HASHIMOTO, YASUAKI
Publication of US20060016582A1 publication Critical patent/US20060016582A1/en
Abandoned 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
    • F28D7/16—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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • 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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • 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

Definitions

  • the present invention relates to a structure of a fin for agitating a fluid in a heat exchanger, particularly, relates to a fluid agitating plate fin mounted to inside or outside of a heat exchanger tube in a heat changing type cooling apparatus and achieving an excellent heat exchanging function by increasing contact between a wall face of a heat exchanger tube and a fluid by bringing about an agitating operation of a turbulent flow or a vortex flow in the fluid comprising a cooled medium or a cooling medium flowing inside or outside of the heat exchanger tube, a method of fabricating the plate fin as well as a heat exchanger tube inwardly mounted with the plate fin and a heat exchanger or a heat exchanging type gas cooling apparatus constituted by being arranged with at least one piece of the heat exchanger tube.
  • EGR exhaust Gas Recirculation
  • NOx nitrogen oxide
  • reducing pump loss or reducing loss of heat radiated to a cooling solution in accordance with a temperature drop of combustion gas increasing a specific heat ratio depending on change of an amount and a composition of a working gas, and increasing a cycle efficiency in accordance therewith and therefore, the method is widely adopted as an effective method for cleaning exhaust gas of the diesel engine and improving a heat efficiency thereof.
  • a heat exchanger for exchanging heat between a gas and a liquid by arranging an outer tube for making the liquid flow on an outer side of an inner tube for making the gas flow there are a double tube type heat exchanger [refer to, for example, JP-A-11-23181 (1 to 6 pages, FIGS. 1 and 2)] in which a metal corrugated plate is inserted into an inner tube as a fin, a double tube type heat exchanger [refer to, for example, JP-A-2000-111277 (1 to 12 pages, FIGS.
  • a double tube type heat exchanger [refer to, for example, JP-A-2003-21478 (1 to 8 pages, FIGS. 1 to 7)] constituted by an inner tube for making a cooled medium flow on an inner side, an outer tube provided to surround an outer periphery of the inner tube separately therefrom, and a cross fin arranged at inside of the inner tube and so on.
  • FIG. 16A by providing a number of projections 30 at an inner face of a flat heat exchanger tube 50 , a cooled medium g flowing in the tube is made to bring about a turbulent flow in accordance with an agitating operation to increase the heat exchanging function to a cooling medium at an outer peripheral face of the heat exchanger tube 50 .
  • FIG. 16B there is constructed a constitution in which a wavy plate fin 30 a is inwardly mounted to a flat heat exchanger tube 50 a , a cooled medium g flowing in the tube is meandered, in FIG.
  • a fin 30 b in a spiral shape is inwardly mounted to a heat exchanger tube 50 b in a cylindrical shape and a cooled medium g is swirled to bring about a vortex flow
  • FIG. 16D by integrating a baffle 30 c in a flat heat exchanger tube 50 c , a cooled medium g flowing in the heat exchanger tube 50 c is forced to meander alternately to prolong a time period of staying in the tube to thereby promote an efficient heat exchange efficiency.
  • a fluid agitating plate fin according to a first aspect of the present invention to resolve the above-described problem is mounted to inside or outside of a heat exchanger tube for making a fluid comprising a cooled medium or a cooling medium flowing at the inside or the outside of the heat exchanger tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges are mounted to the inside or the outside of the heat exchanger tube to cross each other.
  • the present invention is characterized in that the fluid agitating plate fins inwardly mounted into the heat exchanger tube to make the blade edges opposedly cross each other upward and downward may be worked respectively individually upward and downward in the fluid agitating plate fin.
  • the present invention is characterized in that the fluid agitating plate fins inwardly mounted to the heat exchanger tube to make the blade edges opposedly cross each other upward and downward may be respectively simultaneously worked upward and downward at the plate material and inwardly mounted thereto by folding a center portion of the plate material in the fluid agitating plate fin.
  • the present invention is characterized in that the fluid agitating plate fins inwardly mounted to the heat exchanger tube by making the blade edges opposedly cross each other upward and downward may be inwardly mounted thereto by overlapping the blade edges with a face pressure therebetween or inwardly mounted thereto with an interval between the respective blade edges in the fluid agitating plate fin.
  • the plate fin according to the present invention it is preferable that when portions of the plate fins for making the blade edges opposedly cross each other upward and downward are predicted, the predicted portions of making the blade edges cross each other are previously formed with bonding portions of a notch, a recess and projection or the like, and the upward and the downward plate fins are integrally bonded by way of the bonding portions.
  • a method of fabricating a fluid agitating plate fin according to a second aspect of the invention is characterized in a fluid agitating plate fin mounted to inside or outside of a heat exchanger tube for making a fluid comprising a cooled medium or a cooling medium flowing at the inside or the outside of the heat exchanger tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein by forming a plurality of predetermined notched portions at a plate material comprising a thin plate and raising remaining notched portions of the notched portions orthogonally to a surface of the plate material, a plurality of plate fins are formed at the surface of the plate material.
  • means for forming the notched portion at the plate material is any of a mechanical working method of pressing or the like or a chemical working method by etching or the like or an optical method of a laser beam or the like in the method of fabricating the fluid agitating plate fin.
  • a heat exchanger is characterized in being arranged with at least one piece of a heat exchanger tube mounted with a fluid agitating plate fin mounted to inside or outside of the heat exchanger tube for making a fluid comprising a cooled medium or a cooling medium flowing in the heat exchanger tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges cross each other.
  • a heat exchange type gas cooling apparatus is a heat exchange type gas cooling apparatus constituted by being arranged with at least one piece or more of heat exchanger tubes which are intersected with a flow direction of a gas flowing in a gas pipe and in which a cooling medium flows and being mounted with a fluid agitating plate fin contiguous to an outer periphery of the heat exchanger tube, wherein the plate fins are mounted thereto such that blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges cross each other.
  • a heat exchanger tube is a heat exchanger tube constituted by being inwardly mounted with a fluid agitating plate fin for making a fluid comprising a cooled medium or a cooling medium flowing in a tube bring about an agitating operation of a turbulent flow or a vortex flow, wherein the fluid agitating plate fins are inwardly mounted thereto such that blade edges of the plate fins are butted to be opposed to each other upward and downward and the respective butted blade edges cross each other.
  • the blade edges of plate fins are butted to be opposed to each other upward and downward, the respective butted blade edges are integrated to cross each other and therefore, the fluid comprising a gas or a liquid flowing at the inside or the outside of the heat exchanger tube brings about the turbulent flow or the vortex flow by complicatedly agitating flowing lines thereof, the laminar flow is exfoliated and effective agitation is repeated.
  • the fluid flowing at the inside or the outside of the heat exchanger tube is repeatedly brought into contact with the wall face of the heat exchanger tube, heat exchange with the cooling medium or the cooled medium at the outer peripheral face of the heat exchanger tube is efficiently promoted and the excellent cooling efficiency is ensured.
  • the heat exchanger of the invention arranged with at least one piece of the heat exchanger tube according to the present invention inwardly mounted with the plate fin, the fluid flowing in the heat exchanger tube is repeatedly brought into contact with the wall face of the heat exchanger tube, heat exchange to the cooling medium at the outer peripheral face of the heat exchanger tube is efficiently promoted and the excellent cooling efficiency is ensured.
  • the method of fabricating the fluid agitating plate fin according to the present invention is by extremely simple working means of forming the plurality of plate fins at the surface of the plate material by forming the plurality of predetermined notched portions at the plate material comprising the thin plate and raising the remaining notched portions of the notched portions orthogonally to the surface of the plate material, in addition thereto, also in integrating the plate fin to the heat exchanger tube, the plate fin can easily be mounted inwardly not only to the flat heat exchanger tube but also a circular tube or a deformed tube and therefore, the plate fin can preferably be mounted as the fluid agitating plate fin mounted to the inside or the outside of the heat exchanger tube of not only the heat exchange type cooling apparatus but also a heat exchanger of a cooler for a fuel, an oil cooler, an intercooler or the like and at the same time, by the excellent heat exchange function and by forming the core by the plate fin per se, the plate fin contributes to solid formation of the apparatus to enable to constitute the small-sized and light-weighted formation
  • FIG. 1A is a schematic partially enlarged perspective view for explaining a plate fin for agitating a fluid according to an embodiment of the invention, showing a state of providing a notched portion at a plate material of a thin plate by pressing or the like.
  • FIG. 1B is a schematic partially enlarged perspective view for explaining the plate fin for agitating a fluid according to the embodiment of the invention and is a perspective view showing a state of forming a plurality of the plate fins by raising the notched portions orthogonally to a surface of the plate material.
  • FIG. 2 is a front view showing a state of inserting the plate fins provided by the embodiment into a flat heat exchanger tube by making the plate fins opposed to each other.
  • FIG. 3 is a partially enlarged plane view taken along a line A-A of FIG. 2 .
  • FIG. 4 is a partially enlarged front view showing a state of inserting a plate fin provided by an application example based on the embodiment into a flat heat exchanger tube.
  • FIG. 5A is a partially enlarged perspective view schematically showing a state of working a plate fin for agitating a fluid according to other embodiment of the invention, showing a state before being overlapped by butting blade edges thereof.
  • FIG. 5B is a partially enlarged perspective view schematically showing a state of working the plate fin for agitating a fluid according to other embodiment of the invention and is a perspective view showing a state of overlapping the plate fins.
  • FIG. 6A is a partially enlarged front view partially exemplifying a state of butting the blade edges of the plate fins for agitating a fluid according to an application example based on the embodiment, showing a state in which there is a gap between the blade edges.
  • FIG. 6B is a partially enlarged front view partially exemplifying a state of butting the blade edges of the plate fins for agitating a fluid according to an application example based on the embodiment, showing a state in which there is not a gap between the blade edges.
  • FIG. 6C is a partially enlarged front view partially exemplifying a state of butting blade edges of plate fins for agitating a fluid according to an application example based on the embodiment, showing a state of fitting integrally upward and downward by a projection provided at the blade edge.
  • FIG. 6D is a partially enlarged front view partially exemplifying a state of butting the blade edges of the plate fins for agitating a fluid according to an application example based on the embodiment and a front view showing a state of fitting.
  • FIG. 7 is a partially enlarged perspective view schematically showing still other embodiment according to the invention.
  • FIG. 8 is a partially enlarged front view showing an example of attaching a plate fin according to the invention to a heat exchanger tube.
  • FIG. 9 is a partially enlarged perspective view of a plate fin for agitating a fluid according to still other embodiment of the invention.
  • FIG. 10A is a partially enlarged perspective view schematically showing a plate fin for agitating a fluid according to still other embodiment of the invention, forming the plate fin in the same direction.
  • FIG. 10B is a partially enlarged perspective view schematically showing a plate fin for agitating a fluid of still other embodiment according to the invention, and a perspective view showing a constitution formed by alternately crossing the plate fins.
  • FIG. 11 is a perspective view showing a state of inwardly mounting a plate fin for agitating a fluid of the invention to a flat heat exchanger tube and integrating a plurality of the heat exchanger tubes to an EGR cooler (shell and tubes type heat exchanger).
  • FIG. 12A is a perspective view showing an oil cooler inwardly mounting a plate fin for agitating a fluid of the invention to a flat heat exchanger tube and using a single heat exchanger tube and schematically showing a state of the single heat exchanger tube before being integrated to a radiator bottom jacket.
  • FIG. 12B is a side view showing the oil cooler inwardly mounting the plate fin for agitating a fluid of the invention to the flat heat exchanger tube and using the single heat exchanger tube and schematically showing a state of forming the oil cooler by integrating the single heat exchanger tube into the radiator bottom jacket.
  • FIG. 13 is a vertical side sectional view showing a state of mounting a plate fin for agitating a fluid to an outer peripheral face of a flat heat exchanger tube of an EGR gas cooling apparatus according to still other embodiment of the invention.
  • FIG. 14 is a horizontal front view of an EGR gas cooling apparatus according to the embodiment.
  • FIG. 15 is a partially broken perspective view showing an embodiment of integrating a plate fin according to the invention to a plate type heat exchanger.
  • FIG. 16A is a schematic perspective view for explaining a heat exchanger tube inwardly mounted with an agitating fin structure of a prior art and is a view showing a flat heat exchanger tube formed with a projection at a wall face of the heat exchanger tube.
  • FIG. 16B is a schematic perspective view for explaining a heat exchanger tube inwardly mounted with an agitating fin structure of a prior art and is a view showing a state of inwardly mounting a plate fin of a wavy type to a flat heat exchanger tube.
  • FIG. 16C is a schematic perspective view for explaining a heat exchanger tube inwardly mounted with an agitating fin structure of a prior art and is a view showing a constitution of inwardly mounting a strip type fin spirally at an inner peripheral face of a circular heat exchanger tube.
  • FIG. 16D is a schematic perspective view for explaining a heat exchanger tube inwardly mounted with an agitating fin structure of a prior art and is a perspective view showing a constitution for forming a baffle at an inner peripheral face of a flat heat exchanger tube.
  • thin plates comprising austenite species stainless steel of SUS 304, SUS 316 or the like having a thickness of about 0.1 through 0.5 mm are worked in a rectangular shape having a predetermined dimension to provide a plurality of plate materials, two sheets of the plate materials are pressed to form a plurality of notched portion 2 substantially in a channel-like shape having a predetermined dimension directions of which alternately differ as shown by FIG. 1A .
  • notched portions of the notched portion 2 are cut to be raised to be orthogonal to a surface of the plate member to provide a plate 1 formed with fluid agitating plate fins 3 directions of which differ alternately at respective rows and blade edge 4 of which are constituted by linear lines inclined to a longitudinal direction.
  • a flat heat exchanger tube 5 by preparing two sheets of the provided plates 1 and butting the blade edge 4 of the plate fins 3 formed at the respective plates 1 to be respectively opposed to each other upward and downward to insert into a flat heat exchanger tube 5 , the flat heat exchanger tube 5 inwardly mounted with the fluid agitating fins 3 to overlap upward and downward as shown by FIG. 2 is finished.
  • the fluid agitating plate fin 3 of the embodiment heights of the fins butted to be opposed to each other upward and downward are formed respectively by the same height, the invention is not restricted thereby, and it is not hampered that the heights differ from each other as in heights h- 1 , h- 2 of the upward and the downward fins as shown by FIG. 4 .
  • it is indispensable that a sum (h- 1 +h- 2 ) of the heights of the fins falls in a range of not exceeding an inner diameter h- 3 of a short diameter portion of the flat heat exchanger tube.
  • the plate material for forming the fin the thin plate of the austenite species stainless steel is adopted, it is not hampered to select the material pertinently from other metal material so far as the material is material having a constant mechanical strength, excellent in heat resistance, corrosion resistance and heat conductivity and excellent in workability.
  • the means for forming the notched portion 2 according to the embodiment efficiently forms the notched portion 2 by pressing, as a method of working to form the notched portion, the notched portion can also be machined mechanically, further, the notched portion can be formed by etching by chemical means in a solution corrosive for the plate material by providing a predetermined masking or can be formed optically by laser light ray or the like.
  • FIG. 5B a fluid agitating plate fin 3 a as shown by FIG. 5B similar to embodiment 1 except that a plate material constituted by connecting two sheets of the plate materials in Embodiment 1 in a longitudinal direction is prepared, predetermined notched portions are provided at plate materials on the left and on the right of a boundary of a center folding portion 1 a - 3 , a fluid agitating fin 3 a as shown by FIG.
  • Embodiment 5A is formed after raising remaining notched portions of the outer notched portions, thereafter, the plate material is folded at the center folding portions 1 a - 3 , and respective blade edges 4 a of the fluid agitating fins 3 a formed at a plate 1 ( 1 a - 1 ) and a plate 2 ( 1 a - 2 ) are butted to be opposed to each other, a heat exchanger tube inwardly mounted with the plate fin 3 a is finished similar to Embodiment 1 to be subjected to a cooling test by an EGR gas cooling apparatus (shell and tubes type heat exchanger) similar to Embodiment 1, as a result, it is confirmed that a cooling efficiency substantially equivalent to that of Embodiment 1 is achieved.
  • EGR gas cooling apparatus shell and tubes type heat exchanger
  • a fluid agitating plate fin 3 b is provided similar to Embodiment 1 except that a shape of the fluid agitating plate fin formed to a plate material is formed by bending a shape of a blade edge 4 b in a longitudinal direction in place of the fluid agitating plate fins 3 and 3 a provided by Embodiment 1 or Embodiment 2, and when a heat exchanger tube inwardly mounted with the fluid agitating fin 3 b is constituted by using the fin 3 b and is mounted to an EGR gas cooling apparatus to be subjected to a cooling test similar to Embodiment 1, it is confirmed that a cooling efficiency is further increased in comparison with that of Embodiment 1.
  • a fluid agitating plate fin is formed similar to Embodiment 2 except that in place of a constitution of folding to overlap the rectangular plate material at the center folding portion 1 a - 3 in the lateral width direction in Embodiment 2, a folding portion 1 e - 3 is provided to vertically divide a plate material 1 e in a longitudinal direction thereof as shown by FIG. 10A , and a shape of a blade edge 4 e is directed in the same direction on the left and on the right to be subjected to a cooling test under a condition substantially the same as that of Embodiment 2, as a result, it is confirmed that a function equivalent to that of Embodiment 2 is achieved. Further, a fluid agitating fin shown in FIG.
  • a fluid agitating plate fin is formed similar to Embodiment 4 except that fins 3 f on the left side and on the right side are formed to cross alternately and is subjected to a cooling test under the same condition, as a result, a cooling function superior to that of the embodiment is confirmed.
  • FIG. 6 shows constitutions exemplifying states of blade edges of fluid agitating plate fins according to respective embodiments of the invention
  • FIG. 5A shows a constitution having a constant gap at the blade edge 4
  • FIG. 5B shows a constitution in which the blade edges 4 are butted to each other with a constant face pressure and brought into close contact with each other without a gap therebetween.
  • FIG. 7 shows a state of inwardly mounting a fluid agitating plate fin 3 b of the invention to a heat exchanger tube 5 b comprising a circular tube
  • the plate fin 3 b according to the example is inwardly mounted thereto by rounding, for example, the plate 1 provided in Embodiment 1 to insert thereinto, by inserting at least two sheets of the plates 1 and inwardly mounting the plates 1 thereinto by butting the blade edges 4 b of the plate fins 3 b to be opposed to each other to cross each other, even in the circular heat exchanger tube, a heat exchanging function equivalent to that of the flat heat exchanger tube in Embodiment 1 can be achieved.
  • means for fixedly attaching the fluid agitating plate fins provided in the respective embodiments based on the invention are arbitrary and not particularly restricted, for example, as shown by FIG. 8 , means for attaching the plate fins to a flat heat exchanger tube 5 c can pertinently be embodied by means of soldering, welding and adhering by an adhering agent and the like with respect to the bonding portions 6 and the 6 - 1 .
  • means for attaching the plate fins to a flat heat exchanger tube 5 c can pertinently be embodied by means of soldering, welding and adhering by an adhering agent and the like with respect to the bonding portions 6 and the 6 - 1 .
  • the EGR gas constituting a cooled medium is exemplified as a fluid flowing in the heat exchanger tube, in other embodiments, as shown by, for example, FIG. 13 and FIG.
  • cooling water constituting a cooling medium can be made to flow in a heat exchanger tube 5 f and an outer side of the heat exchanger tube 5 f can also be made to constitute a flow path g of a gas constituting a cooled medium, in this case, heat of the EGR gas brought into contact with an outer peripheral face of the heat exchanger tube 5 f can be efficiently subjected to heat exchange by bringing about a turbulent flow or a vortex flow in the EGR gas flowing over an outer peripheral face of the heat exchanger tube 5 f.
  • An oil cooler 20 is constituted by providing an oil inlet 5 e - 5 and an oil outlet 5 e - 6 as shown by FIG. 12A to, for example, a single member 5 e of a flat heat exchanger tube inwardly mounted with the fluid agitating plate fins provided by the above-described respective embodiments based on the invention, attaching side lids 5 e - 1 and 5 e - 2 at opening portions on both sides thereof, closing the opening portions by calking or welding or the like and dipping and fixing a total thereof in a radiator bottom jacket 6 as shown by FIG. 12B by soldering.
  • oil at high temperature constituting a cooled medium flowing from the oil inlet 5 e - 5 provided at the flat heat exchanger tube single member 5 e is agitated by a plurality of fluid agitating fins 3 g inwardly mounted to the flat single heat exchanger tube 5 e and repeatedly brought into contact with a wall face of the heat exchanger tube 5 e by bringing about a turbulent flow or a vortex flow, heat thereof is effectively exchanged to cooling water C constituting a cooling medium at an outer peripheral face of the heat exchanger tube and when the oil flows out from the oil outlet 5 e - 6 , the oil is cooled substantially to an initial set temperature.
  • directions of the notched portions are made to be symmetric on the left and on the right of the center folding portions 1 a - 3 and 1 e - 3 , the directions may be the same and the direction of cutting to raise the fin may be any direction.
  • FIG. 15 shows a state of inwardly mounting a fluid agitating plate fin 3 h to a plate type heat exchanger 40 as still other application product based on the invention
  • the fluid agitating fin 3 h according to the invention is inwardly mounted between flat plates 40 - 3 partitioning a ceiling plate 40 - 4 and a bottom plate 40 - 5 by a plural number, it is confirmed thereby that a vortex flow or a turbulent flow is brought about at both of a gas g constituting the cooled medium flowing between the flat plates 40 - 3 and cooling water C constituting the cooling medium, heat exchange by way of the flat plates 40 - 3 is effectively promoted and an excellent cooling efficiency can be realized, in addition thereto, it is verified that the fluid agitating fin 3 h forms a core between the ceiling plate 40 - 4 or the bottom plate 40 - 5 and the flat plate 40 - 3 or between the flat plates 40 - 3 to contribute to solid formation of the apparatus and small-sized and the light-weighted formation of the heat exchanger main
  • the fluid agitating plate fin according to the invention is extremely facilitated in working the plate fin per se and the plate fin can easily be mounted inwardly not only to the flat heat exchanger tube but also the heat exchanger tube comprising a circular tube or other deformed tube. Further, by mounting the heat exchanger tube inwardly mounted with the fluid agitating plate fin provided by the invention, the cooling apparatus of the heat exchange type starting from the EGR gas cooling apparatus achieves an excellent cooling efficiency despite a simple structure thereof.
  • the apparatus can be constituted by light-weighted and small-sized formation, the apparatus can flexibly deal not only with the EGR gas cooling apparatus for an automobile but also with a case in which object conditions of a cooled medium and a cooling medium are changed in viscosities or temperatures thereof as in converted into gas-gas, gas-liquid, liquid-liquid and wide use thereof can be expected such that the apparatus can be diverted sufficiently also as other gas cooling apparatus, or a cooling apparatus of a liquid of oil, fuel or the like.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US11/186,576 2004-07-23 2005-07-21 Fluid agitating fin, method of fabricating the same and heat exchanger tube and heat exchanger or heat exchanging type gas cooling apparatus inwardly mounted with the fin Abandoned US20060016582A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004216526A JP4614266B2 (ja) 2004-07-23 2004-07-23 流体攪拌用フィン並びに該フィンを内装した伝熱管および熱交換器または熱交換型ガス冷却装置
JP2004-216526 2004-07-23

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US20060016582A1 true US20060016582A1 (en) 2006-01-26

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US11/186,576 Abandoned US20060016582A1 (en) 2004-07-23 2005-07-21 Fluid agitating fin, method of fabricating the same and heat exchanger tube and heat exchanger or heat exchanging type gas cooling apparatus inwardly mounted with the fin

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US (1) US20060016582A1 (ja)
JP (1) JP4614266B2 (ja)
CN (1) CN1755316A (ja)
DE (1) DE102005035258A1 (ja)
FR (1) FR2873433A1 (ja)

Cited By (38)

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US20090302458A1 (en) * 2005-06-27 2009-12-10 Hidehito Kubo Heat Sink For Power Module
US20100096111A1 (en) * 2008-10-20 2010-04-22 Kucherov Yan R Heat dissipation system with boundary layer disruption
CN101782341A (zh) * 2010-03-11 2010-07-21 宁波汇富机电制造有限公司 一种铝制板翅式换热器及其真空钎焊工艺方法
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CN102607005A (zh) * 2012-03-21 2012-07-25 武汉宏健环保厨房设备有限公司 一种产生蒸汽和热水的两用机
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US20140124161A1 (en) * 2011-06-30 2014-05-08 Halla Visteon Climate Control Corp. Air conditioner for vehicle
US20140202442A1 (en) * 2013-01-21 2014-07-24 Carrier Corporation Condensing heat exchanger fins with enhanced airflow
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US20140374408A1 (en) * 2013-06-19 2014-12-25 Behr Gmbh & Co. Kg Heat exchanger device and heater
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US20170336153A1 (en) * 2016-05-12 2017-11-23 Price Industries Limited Gas turbulator for an indirect gas-fired air handling unit
US20180328317A1 (en) * 2017-05-11 2018-11-15 Hyundai Motor Company Water-cooled egr cooler, and the manufacturing method thereof
US20180335263A1 (en) * 2017-05-17 2018-11-22 Mahle International Gmbh Heat exchanger
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CN112368876A (zh) * 2018-06-29 2021-02-12 韦巴斯托股份公司 用于对电储能器进行调温的调温元件
WO2021198521A1 (en) * 2020-04-03 2021-10-07 The Provost, Fellows, Scholars And Other Members Of Board Of Trinity College Dublin A heat exchanger and uses thereof
US11306943B2 (en) * 2016-09-09 2022-04-19 Kyungdong Navien Co., Ltd. Tube assembly for tubular heat exchanger, and tubular heat exchanger comprising same
US11391522B2 (en) * 2020-04-20 2022-07-19 Mikutay Corporation Tube and chamber type heat exchange apparatus having an enhanced medium directing assembly
US11486284B2 (en) * 2019-01-22 2022-11-01 Sankei Giken Kogyo Co., Ltd. Heat exchange device
US11566855B2 (en) * 2019-08-09 2023-01-31 Mikutay Corporation Tube and chamber heat exchange apparatus having a medium directing assembly with enhanced medium directing panels
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US20060042255A1 (en) * 2004-08-26 2006-03-02 General Electric Company Combustor cooling with angled segmented surfaces
US20090302458A1 (en) * 2005-06-27 2009-12-10 Hidehito Kubo Heat Sink For Power Module
US8411438B2 (en) * 2005-06-27 2013-04-02 Kabushiki Kaisha Toyota Jidoshokki Heat sink for power module
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US20070204972A1 (en) * 2006-03-01 2007-09-06 Sensis Corporation Method and apparatus for dissipating heat
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WO2007103628A3 (en) * 2006-03-01 2007-11-29 Sensis Corp Method and apparatus for dissipating heat
US20080041087A1 (en) * 2006-08-18 2008-02-21 Jaeggi/Guntner (Schweiz) Ltd. Hybrid dry cooler heat exchange with water-droplet slit and water-droplet splitting louver for heat exchangers with primarily latent heat transfer
KR101426559B1 (ko) * 2007-11-12 2014-08-05 엘지전자 주식회사 냉각팬 및 노트북의 냉각장치
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US20100193162A1 (en) * 2009-02-05 2010-08-05 Wistron Corporation Heat dissipation device
EP2463903A4 (en) * 2009-08-07 2015-03-04 Furukawa Sky Aluminum Corp HEAT SINK
US8701604B2 (en) 2009-09-01 2014-04-22 Behr Gmbh & Co. Kg Gas cooler for an internal combustion engine
CN101782341A (zh) * 2010-03-11 2010-07-21 宁波汇富机电制造有限公司 一种铝制板翅式换热器及其真空钎焊工艺方法
US20120047873A1 (en) * 2010-08-31 2012-03-01 General Electric Company Duplex tab obstacles for enhancement of deflagration-to-detonation transition
US8881500B2 (en) * 2010-08-31 2014-11-11 General Electric Company Duplex tab obstacles for enhancement of deflagration-to-detonation transition
US20140124161A1 (en) * 2011-06-30 2014-05-08 Halla Visteon Climate Control Corp. Air conditioner for vehicle
US9682607B2 (en) * 2011-06-30 2017-06-20 Hanon Systems Air conditioner for vehicle
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US20140238006A1 (en) * 2011-10-18 2014-08-28 Calsonic Kansei Corporation Exhaust gas heat exchanger
US9103250B2 (en) * 2011-10-18 2015-08-11 Calsonic Kansei Corporation Exhaust gas heat exchanger
CN102607005A (zh) * 2012-03-21 2012-07-25 武汉宏健环保厨房设备有限公司 一种产生蒸汽和热水的两用机
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US20140202442A1 (en) * 2013-01-21 2014-07-24 Carrier Corporation Condensing heat exchanger fins with enhanced airflow
US20160097599A1 (en) * 2013-05-23 2016-04-07 Calsonic Kansei Corporation Heat exchanger
US10197336B2 (en) * 2013-05-23 2019-02-05 Calsonic Kansei Corporation Heat exchanger
US9743464B2 (en) * 2013-06-19 2017-08-22 Mahle International Gmbh Heat exchanger device and heater
US20140374408A1 (en) * 2013-06-19 2014-12-25 Behr Gmbh & Co. Kg Heat exchanger device and heater
US20150377562A1 (en) * 2013-06-27 2015-12-31 Dana Canada Corporation Fluid channels having performance enhancement features and devices incorporating same
EP3151989A4 (en) * 2014-06-05 2018-04-25 Zoneflow Reactor Technologies, LLC Systems and methods for constructing engineered packing for heat exchange
US20150354908A1 (en) * 2014-06-05 2015-12-10 Zoneflow Reactor Technologies, LLC Engineered packing for heat exchange and systems and methods for constructing the same
WO2015187678A1 (en) 2014-06-05 2015-12-10 Zoneflow Reactor Technologies, LLC Systems and methods for constructing engineered packing for heat exchange
US9677828B2 (en) * 2014-06-05 2017-06-13 Zoneflow Reactor Technologies, Llp Engineered packing for heat exchange and systems and methods constructing the same
CN104515421A (zh) * 2015-01-05 2015-04-15 无锡马山永红换热器有限公司 水气分离器内部翅片安装夹片
ES2630754A1 (es) * 2016-02-19 2017-08-23 Valeo Térmico, S. A. Canal de circulación para la conducción de un fluido de un intercambiador de calor, e intercambiador de calor
KR20170120512A (ko) * 2016-04-21 2017-10-31 린나이코리아 주식회사 난류 형성구
CN107345776A (zh) * 2016-04-21 2017-11-14 林内株式会社 乱流形成用器具
KR102298982B1 (ko) * 2016-04-21 2021-09-06 린나이코리아 주식회사 난류 형성구
US20170307309A1 (en) * 2016-04-21 2017-10-26 Rinnai Corporation Turbulence generator
US10197343B2 (en) * 2016-04-21 2019-02-05 Rinnai Corporation Turbulence generator
US10208604B2 (en) * 2016-04-27 2019-02-19 United Technologies Corporation Cooling features with three dimensional chevron geometry
US20170314398A1 (en) * 2016-04-27 2017-11-02 United Technologies Corporation Cooling features with three dimensional chevron geometry
US20170336153A1 (en) * 2016-05-12 2017-11-23 Price Industries Limited Gas turbulator for an indirect gas-fired air handling unit
US10385769B2 (en) * 2016-08-30 2019-08-20 Caterpillar Inc. Fuel reformer cooler
US11306943B2 (en) * 2016-09-09 2022-04-19 Kyungdong Navien Co., Ltd. Tube assembly for tubular heat exchanger, and tubular heat exchanger comprising same
US20180328317A1 (en) * 2017-05-11 2018-11-15 Hyundai Motor Company Water-cooled egr cooler, and the manufacturing method thereof
US10253730B2 (en) * 2017-05-11 2019-04-09 Hyundai Motor Company Water-cooled EGR cooler, and the manufacturing method thereof
US20180335263A1 (en) * 2017-05-17 2018-11-22 Mahle International Gmbh Heat exchanger
US10883773B2 (en) * 2017-05-17 2021-01-05 Mahle International Gmbh Heat exchanger with a separator
CN111433552A (zh) * 2017-11-27 2020-07-17 达纳加拿大公司 增强的传热表面
WO2019100170A1 (en) * 2017-11-27 2019-05-31 Dana Canada Corporation Enhanced heat transfer surface
US11454448B2 (en) 2017-11-27 2022-09-27 Dana Canada Corporation Enhanced heat transfer surface
US11879694B2 (en) 2017-12-29 2024-01-23 Ehrfeld Mikrotechnik Gmbh Turbulator and channel and process apparatus with a turbulator
CN112368876A (zh) * 2018-06-29 2021-02-12 韦巴斯托股份公司 用于对电储能器进行调温的调温元件
US11486284B2 (en) * 2019-01-22 2022-11-01 Sankei Giken Kogyo Co., Ltd. Heat exchange device
US11566855B2 (en) * 2019-08-09 2023-01-31 Mikutay Corporation Tube and chamber heat exchange apparatus having a medium directing assembly with enhanced medium directing panels
WO2021198521A1 (en) * 2020-04-03 2021-10-07 The Provost, Fellows, Scholars And Other Members Of Board Of Trinity College Dublin A heat exchanger and uses thereof
US11391522B2 (en) * 2020-04-20 2022-07-19 Mikutay Corporation Tube and chamber type heat exchange apparatus having an enhanced medium directing assembly

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FR2873433A1 (fr) 2006-01-27
DE102005035258A1 (de) 2006-03-16

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