US3537516A - Compact heat exchange component - Google Patents

Compact heat exchange component Download PDF

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Publication number
US3537516A
US3537516A US741982A US3537516DA US3537516A US 3537516 A US3537516 A US 3537516A US 741982 A US741982 A US 741982A US 3537516D A US3537516D A US 3537516DA US 3537516 A US3537516 A US 3537516A
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US
United States
Prior art keywords
fins
heat exchanger
heat exchange
portions
sheets
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.)
Expired - Lifetime
Application number
US741982A
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English (en)
Inventor
Charles O Kunz
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.)
Olin Corp
Original Assignee
Olin Corp
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Filing date
Publication date
Application filed by Olin Corp filed Critical Olin Corp
Application granted granted Critical
Publication of US3537516A publication Critical patent/US3537516A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F28D7/02—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 helically coiled
    • F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
    • 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
    • F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • 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
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube

Definitions

  • FIG. 1 is a top view showing a stop-weld pattern which may be applied to one of the sheets to be used in forming the heat exchanger of the present invention
  • FIG. 2 is a top view of a partially completed heat exchanger which shows the edge portion fin area cut to define fin area;
  • FIG. 3 is a perspective view of a portion of a heat exchanger according to the present invention with the individual fins being bent and twistedso as to minimize the space required for a given amount of heat exchange;
  • FIG. 3A is a modification of FIG. 3;
  • FIG. 4 is a perspective view of a helically wound heat exchanger according to the present invention.
  • FIG. 5 is a top view of a helically wound heat exchanger according to the present invention.
  • FIG. 6 is a side view of a heat exchanger according to the present invention which has been wound in a serpentine shape and tiered;
  • FIG. 7 is a bottom view of a heat exchanger according to the present invention which has been wound in the form of a serpentine and tiered.
  • the heat exchanger of the present invention is shown most clearly in FIG. 3.
  • a heat exchanger 10 having a conduit portion is provided between bonded areas 30 and 31.
  • the fins 40 are integral with the bonded areas 30 and 31.
  • the fins 40 comprise an edge portion 41 which is relatively flat and is generally perpendicular to a plane passing through bonded portions 30 and 31.
  • the fins also have a base portion 42 which is integral with either bonded portion 30 or 31. At the base portion, the fins have been bent approximately 90, apart with respect to the plane passing trough bonded portions 30 and 31. Additionally, the fins have been twisted approximately 90.
  • the fin edge portion 41 is perpendicular to a plane passing through the base portions 30 and 31.
  • the heat exchanger 10 contains two parallel portions 50 and 60 joined to each other and integral 5 with a bend portion 70.
  • the bend portion 70 it will be apparent that fin members 71 and 72 on the outside of the bend section are at a greater distance from each other than are the fins 42 and 43 in the parallel portion. Additionally, the angle between the fin members 71 and 72, as defined by a plane passing through each of them in a vertical direction, is acute whereas planes passing through the fins 42 and 43 would appear to never meet, i.e., fins 42 and 43 are approximately parallel.
  • the fins for example, 73 and 74, appear to be bent towards each other and would have an acute angle approximately defined by a plane passing through each of the fins 73 and 74.
  • the planes would appear to approximately meet at a center point 75, located approximately halfway between portions 50 and 60.
  • FIG. 3A a heat exchanger 100 is shown.
  • a center conduit 200 is provided, together with bonded portions 300 and 310.
  • fins 400 are provided.
  • the edge portion 410 of the fins are transverse to the longitudinal axis of the heat exchanger.
  • the embodiment in FIG. 3A differs from that in FIG. 3 in that the fins 400 are bent more than 180 apart. Thus, there is an angle of greater than between a plane passing through the bonded portions 300 and 310 and the fins 400.
  • the fins are twisted at the base portion 420 so that the edge portions 410 are transverse to the longitudinal axis of the heat exchanger.
  • This embodiment utilizes even less space than the embodiment in FIG. 3. By careful assembly, even more fin area can be obtained for a given volume with the embodiment in FIG. 3A than can be attained in the embodiment in FIG. 3.
  • One exemplary method of making a heat exchanger according to the present invention is to apply to one sheet of material 100, a pattern of stop-weld material 101.
  • This stop-weld pattern may comprise a center portion 103 throughout the entire length of the strip. If desired, the end portions of the center strip 104 and 105 may be somewhat wider than the remainder of the strip so that a somewhat larger opening is provided at the ends for inflation and attachment of equipment used to circulate a heat exchanger through the center passageway.
  • the pattern may also comprise edge portions 106 and 107. These portions operate to avoid bonding so that the fins 40 can be provided. It will thus be apparent that two bonding strips 108 and 109 remain which contain no stop-weld pattern.
  • the pattern of stop-weld material may be provided by numerous methods known to those skilled in the art. For example, the well-known silk screen process may be utilized. Likewise, the process covered in Keith application, Ser. No. 723,055 may be utilized in which a stop-weld pattern is applied over the entire first sheet and then a portion is removed, for example, by milling, to define those portions where bonding is to take place.
  • bonding will take place only in the portions 108 and 109.
  • This bonding may be either cold bonding or hot bonding as described in Ser. No. 630,376 now abandoned and in Ser. No. 723,055.
  • the strip 1 is cut into a plurality of sections 2, 3, 4, 5, etc.
  • the inward length of the cut in FIG. 2 is made to include the nonbonded edge portions. It will be apparent from FIG. 3 that for each of the cut elements, 2 and 3 in FIG. 2, two opposite fins from each result, or a total of four.
  • the strip may be inflated either before or'after the fins are bent and twisted.
  • a center passageway 6 is provided which may have enlarged openings 7 and 8 at the ends thereof, provided by way of a stop-weld pattern and after inflation, inlet and outlet conduit passageways will result.
  • the sections 2 and 3 are bent. As mentioned previously, this bending involves separating the two sheets and bending them approximately 180 with respect to each other and approximately 90 with respect to a plane passing through the bonded portions. The sheets are also twisted 90. While separate operations may be provided for the bending and twisting, in the preferred embodiment of the present invention, the bending and twisting is done simultaneously.
  • the next step of the process is to inflate it to define the passageway 20.
  • An inflation needle and fluid pressure is all that is necessary for the inflation operation, as is now well known in the art.
  • the heat exchanger can then be bent into various appropriate shapes.
  • the 7 heat exchanger may be bent into a helix, as shown in FIGS. 4 and 5.
  • the heat exchanger shown in FIG. 4 has a center conduit 220 through which a heat exchange medium is passed. Bonded areas 230 and 231 are provided. Integral therewith, bent and twisted fins 241, 242, 243 and 244 (indicated schematically) are provided, as described in regard to FIG. 3.
  • the top of the helix is shown in FIG. 5, and an end portion 270 is provided similar to that in FIG. 3. However, it is apparent that at one point thereof, 250, the heat exchanger moves downwardly and another bend portion 280 is encountered. Another bend portion 290 would be found at the opposite end and so forth.
  • FIGS. 6 and 7. Another embodiment of the present invention is shown in FIGS. 6 and 7.
  • the heat exchanger having a center conduit 320 is wound into a serpentine shape having legs 301, 302 and 303. This results in end portions 370.
  • fins 341, 342, 343 and 344 are provided, as described previously.
  • a second row may be provided. Ifa second row is provided, as shown in FIG. 7, the leg 304 moves downwardly and then the heat exchanger is wound again in a serpentine manner.
  • end 37E shown in FIG. 6 is the end portion of the second tier.
  • end portion 372 is from the second tier.
  • This two-tiered serpentine structure again is effective in keeping the volume required to house the heat exchanger at a minimum.
  • there is a high concentration of fins so that'effective heat exchange is obtained between a fluid passing through the fins and a cooling medium passing through passageway 320.
  • a heat exchanger comprising: two sheets of metal, each of which cooperate to completely define at least one tubular passageway; edge portions defined by the same two sheets of metal which define said tubular passageway, said edge portions being on opposite sides of said tubular passageway and being separated from said tubular passageway by a bonded portion extending coextensively with said edge portions and said tubular assageway in which said sheets of metalare bonded toget er; said sheets in each of said edge portions being bent apart greater than with respect to each other to provide efficient heat exchange surface; said bent apart sheets in said edge portion being formed into fins, said fins being transverse to the longitudinal axis of said heat exchanger, said fins being twisted approximately 90 and being parallel throughout at least a substantial portion of said heat exchanger; whereby said fins are in heat exchange relationship with said tubular passageway, the heat exchange between said tubular passageway and said fins taking place substantially through the said two sheets of metal which define said tubular passageway.
  • a heat exchanger according to claim l in which planes passing through said fins define acute angles at outer bend portions of said heat exchanger.
  • a heat exchanger according to claim l in which at the inner edge bend portions, said fins point toward each other.
  • a heat exchanger according to claim 1 which is wound into a helix.
  • a heat exchanger according to claim 1 which is wound into a serpentine.
  • a heat exchanger comprising two sheets of metal, each of which cooperate to completely define at least one tubular passageway; edge portions defined by the same two sheets of metal which define said tubular passageway, said edge portions being on opposite sides of said tubular passageway and being separated from said tubular passageway by a bonded portion extending coextensively with said edge portions and said tubular passageway in which said sheets of metal are bonded together; said sheets in each of said edge portions being bent apart at least about with respect to each other to provide efficient hcat exchange surface; said bent apart sheets in said edge portions .being formed into fins, said fins being transverse to the longitudinal axis of said heat exchanger; said fins being twisted approximately 90 and said fins being parallel throughout at least a substantial portion of said heat exchanger; said heat exchanger being wound into a serpentine structure comprising a first row having a serpentine configuration and at least an adjacent second row having a serpentine configuration, wherein said first and said at least second row are integrally connected, whereby the fins are in heat exchange relation with said

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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)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US741982A 1968-07-02 1968-07-02 Compact heat exchange component Expired - Lifetime US3537516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74198268A 1968-07-02 1968-07-02

Publications (1)

Publication Number Publication Date
US3537516A true US3537516A (en) 1970-11-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
US741982A Expired - Lifetime US3537516A (en) 1968-07-02 1968-07-02 Compact heat exchange component

Country Status (9)

Country Link
US (1) US3537516A (es)
BR (1) BR6909310D0 (es)
DE (1) DE1933400A1 (es)
ES (1) ES367142A1 (es)
FR (1) FR2012142A1 (es)
GB (1) GB1234377A (es)
NO (1) NO124448B (es)
SE (1) SE359913B (es)
YU (1) YU32020B (es)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746086A (en) * 1971-08-27 1973-07-17 Peerless Of America Heat exchangers
US4222160A (en) * 1978-04-27 1980-09-16 Industrial Blast Coil Corporation Method of making heat exchange tubing assembly
US4275785A (en) * 1977-03-28 1981-06-30 Industrial Blast Coil Corporation Heat exchange tubing blade assembly
US4337826A (en) * 1979-02-26 1982-07-06 Peerless Of America, Inc. Heat exchangers and method of making same
US4794985A (en) * 1987-04-29 1989-01-03 Peerless Of America Incorporated Finned heat exchanger tubing with varying wall thickness
US5755034A (en) * 1994-03-23 1998-05-26 Nagase & Co., Ltd. Method for manufacturing a hub ring for a filter
US6050328A (en) * 1997-01-30 2000-04-18 Hitachi, Ltd. Heat exchanger and air conditioner using same
US20120017607A1 (en) * 2010-07-22 2012-01-26 Flir Systems, Inc. Expander for Stirling Engines and Cryogenic Coolers
US11346244B2 (en) * 2019-05-02 2022-05-31 Raytheon Technologies Corporation Heat transfer augmentation feature

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9506184D0 (en) * 1995-03-27 1995-05-17 Mdh Ltd Heat exchanger and method of manufacture, and dehydration apparatus
DE102010003063A1 (de) * 2010-03-19 2011-09-22 Andreas Hille Wärmetauscherelement

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746086A (en) * 1971-08-27 1973-07-17 Peerless Of America Heat exchangers
US4275785A (en) * 1977-03-28 1981-06-30 Industrial Blast Coil Corporation Heat exchange tubing blade assembly
US4222160A (en) * 1978-04-27 1980-09-16 Industrial Blast Coil Corporation Method of making heat exchange tubing assembly
US4337826A (en) * 1979-02-26 1982-07-06 Peerless Of America, Inc. Heat exchangers and method of making same
US4794985A (en) * 1987-04-29 1989-01-03 Peerless Of America Incorporated Finned heat exchanger tubing with varying wall thickness
US5755034A (en) * 1994-03-23 1998-05-26 Nagase & Co., Ltd. Method for manufacturing a hub ring for a filter
US6050328A (en) * 1997-01-30 2000-04-18 Hitachi, Ltd. Heat exchanger and air conditioner using same
US20120017607A1 (en) * 2010-07-22 2012-01-26 Flir Systems, Inc. Expander for Stirling Engines and Cryogenic Coolers
US8910486B2 (en) * 2010-07-22 2014-12-16 Flir Systems, Inc. Expander for stirling engines and cryogenic coolers
US11346244B2 (en) * 2019-05-02 2022-05-31 Raytheon Technologies Corporation Heat transfer augmentation feature

Also Published As

Publication number Publication date
DE1933400A1 (de) 1970-01-08
YU169969A (en) 1973-08-31
FR2012142A1 (es) 1970-03-13
BR6909310D0 (pt) 1973-02-08
SE359913B (es) 1973-09-10
ES367142A1 (es) 1971-04-01
NO124448B (es) 1972-04-17
YU32020B (en) 1974-02-28
GB1234377A (es) 1971-06-03

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