US3377683A - Method of making a heat exchanger - Google Patents

Method of making a heat exchanger Download PDF

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Publication number
US3377683A
US3377683A US482061A US48206165A US3377683A US 3377683 A US3377683 A US 3377683A US 482061 A US482061 A US 482061A US 48206165 A US48206165 A US 48206165A US 3377683 A US3377683 A US 3377683A
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US
United States
Prior art keywords
passageway
heat exchanger
blank
panel
sheet
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
US482061A
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English (en)
Inventor
Lester J Tranel
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
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 Olin Corp filed Critical Olin Corp
Priority to US482061A priority Critical patent/US3377683A/en
Priority to GB35778/66A priority patent/GB1146632A/en
Priority to NO164315A priority patent/NO125963B/no
Application granted granted Critical
Publication of US3377683A publication Critical patent/US3377683A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • B21D53/045—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal by inflating partially united plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/50—Machine tool, machine tool null till machine tool work handling
    • G05B2219/50334—Tool offset, diameter correction
    • 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
    • Y10T29/49366—Sheet joined to sheet
    • Y10T29/49369—Utilizing bond inhibiting material
    • Y10T29/49371—Utilizing bond inhibiting material with subsequent fluid expansion

Definitions

  • This invention relates generally to the fabrication of hollow articles and more specifically to a method of accurately expanding a hollow article adapted for use as a heat exchanger.
  • a sheet-like structure having internal hollow passageways is well adapted for use as a heat exchanger wherein a heat exchange medium is to be circulated throughout the structure.
  • One methodwhich is particularly well adapted to producing such devices is that disclosed in US. Patent No. 2,690,002, issued Sept. 28, 1954, and known in the art as the Roll-Bond process.
  • a structure is provided to which necessary connections may be made for the circulation of heat exchange media.
  • Such connections for example those required for circulation of a refrigerant, are desirably of a precise configuration so that standard connections may suitably fit the heat exchange'structures.
  • a platelike heat exchanger to which asingle connection may be made for both entry and exit of the circulating refrigerant.
  • the heat exchanger In an application such as in a household refrigerator, it has been found desirable to produce the heat exchanger with one side harder than the other. The harder side may then be positioned where severe treatment is to be expected, such as from. ice-cube trays or sharp instruments used in removing ice.
  • the heat exchanger, and accordingly the hollow passageways within the heat exchanger may be of a bi-alloy construction, with one side thereof of a hardness different from the other side.
  • the hard side may be an X8040 alloy
  • thesoft side an aluminum alloy such as 1100 alloy.
  • Such construction causes production difficulties in precisely expanding, or fisizing, the internal passages so as to closely receive standard connections.
  • the sizing of the passageways within such abi'alloy heat exchanger may be accomplished by the standard sizing tools if the expanded passageway is first further expanded beyond the extent achieved by inflation of the panel forming the heat exchanger.
  • This further expansion is most expeditiously done by forcing the material of the panel on either side of the passageway to flow into the passageway walls; this may be accomplished, for example, by coining the panel areas on each side of the passageway to reduce the thickness thereof.
  • Such further expansion reshapes the passageway more nearly to the Patented Apr. 16, 1958 cutes the amount of force required by the sizing tool in forming the precise configuration.
  • This invention is directed primarily to the expansion of metal panels from blanks fabricated with unjoined interior portions, but the invention is equally applicable to similar panels fabricated from materials other than metals, such as various plastics, and to panels fabricated from dissimilar materials such as metal and a plastic joined together with an unjoined portion between the sheets.
  • FIGURES 1-3 depict schematically a process for forming a blank from which a heat exchanger according to this invention may be formed
  • FIGURE 4 is a plan view of a heat exchanger expanded from the blank produced by the process of FIG- URES l-3, and showing a suitable connection for circulation of a heat exchange medium;
  • FIGURE 5 is a cross-sectional view of a portion of FIGURE 4 taken along the lines VV thereof;
  • FIGURE 5A is a cross-sectional view similar to FIG- URE 5 illustrating a modification thereof;
  • FIGURE 6 is a perspective view of a suitable tool used in sizing the passageway of the heat exchanger of FIGURE 4;
  • FIGURES 7, 8 and 9 are exploded cross-sectional views of a portion of the expanded blank of FIGURE 4, illustrating various steps in the instant method.
  • FIGURE 10 is a perspective view of a suitable apparatus which may be employed in the instant invention.
  • FIGURES 13 depict by way r of example one method by which a plate-like heat exchanger having internal passageways may be produced. While the instant invention is applicable to any sheet-like structure having internal passageways, the method of pro duction disclosed in the aforementioned US. Patent No. 2,690,002, is preferred.
  • a first sheet of material 1 may have applied to one face thereof any desired pattern of stop-weld material 2, as shown in FIGURE 1.
  • a second sheet of material 3 may then be superimposed upon the first sheet 1, as shown in FIGURE 2, and secured together as by spot welding 4 to prevent relative slippage of the adjacent surfaces of the sheets 1 and 3 during a subsequent welding operation.
  • the sheets 1 and 3 may then be welded together throughout their contacting faces not separated by stop-weld material.
  • the superimposed sheets may be treated by hot rolling as shown in FIGURE 3.
  • the superimposed sheets are first heated and then passed through rolls 5 between which they are reduced in thickness and elongated in the direction of rolling.
  • the resultant blank 6 having an unjoined inner portion corresponding to the pattern desired cross-sectional configuration, and materially re- 7 of stop-weld material 2 may then be softened in any appropriate manner as by annealing, and thereafter the blank may be cold rolled to provide a more even thickness and again annealed.
  • FIG- URE 4 of the drawings may comprise a blank 6 produced according to the method indicated above, in which the pattern of stop-weld material 2 has been inflated by introduction of fluid-distending pressure in a manner known in the art to form a system 7 of internal hollow passageways. concentrically oriented tubes 8 and 9 may then be inserted for appropriate circulation of a refrigerant through the passageway 7.
  • the passageway 7 may include an enlarged portion 10 near an edge of the sheet and a connecting restricted portion 11.
  • the inner of the concentric tubes 8 may then be inserted into the restricted portion 11 and employed for introduction of the heat exchange medium, for example a refrigerant.
  • the refrigerant is then circulated throughout the passageway 7, returning within the portion 10 from which it may exit through the outer tube 9.
  • the tubes 8 and 9 may take any desired form, those shown being merely exemplary.
  • FIGURE 5A Such an expedient is illustrated in FIGURE 5A, wherein a cylindrical bushin 13, which may be of metal, with a surrounding cylindrical grommet G, which may be of a sponge rubber tubing, is inserted approximately midway of the restricted portion 11 prior to insertion of the tube 8.
  • a cylindrical bushin 13 which may be of metal
  • a surrounding cylindrical grommet G which may be of a sponge rubber tubing
  • opposing sides of the described heat exchangers may be of different alloys. Accordingly, initial expansion of the passageway 7, whether by fluid pressure or by introduction of a mandrel or the like, would yield differing expansion of the two sides of the passageway.
  • the standard connections for circulation of the refrigerant are of a symmetrical configuration, it is desirable that the portion of the passageway to receive such a connection also be of a symmetrical coufiguration.
  • a method is provide for facilitating the precise sizing of such a passageway in response to introduction of a usual symmetrical sizing tool, for example that shown in FIGURE 6, and. identified by the reference character 12.
  • FIGURE 7 is an exploded cross-sectional view of that portion of the blank 6 including the restricted portion 11.
  • introduction of a standard sizing tool similar to that illustrated in FIGURE 6 would require a high degree of force to achieve the desired cross-sectional configuration and, one side of the passageway being harder than the other, unequal distension on the two sides would result.
  • Such defects may be avoided by first further expanding the passageway 7 by forcing the material of the blank on both sides of the passageway to flow into the passageway walls.
  • portions and 21 of blank 6 may be decreased in thickness, the excess material flowing into the walls of passageway 7 and accordingly expanding the passageway 7 into a larger passageway 27.
  • the distension on the two sides of such passageway 27 would still be uneven, but to a lesser degree than that illustrated in FIGURE 7.
  • the amount of force required to form the passageway 27 into the desired configuration by introducing a sizing tool such as 12 is materially less for the passageway 27 as compared to the passageway 7.
  • the passageway 27 may be formed into the desired cross-sectional configuration, for example that shown at 37 in FIGURE 9. Due to the intermediate expansion step, this final forming is relatively easy to accomplish, and is done without any special equipment other than the sizing tool itself.
  • FIGURE 10 A suitable apparatus for performing this operation is illustrated in FIGURE 10.
  • the thinned areas 20 and 21 may be obtained by positioning the blank 6 within a suitable press and subjecting the blank 6 to tools 40, which may be attached in any desired manner to platens 41 and 42 of the press. It will be evident that in the apparatus illustrated, the passageway is positioned between two adjacent tools 40 and that opposing tools 40 are in alignment to cause the thinned areas 20 and 21 illustrated in FIGURE 8.
  • the force and speed of contact between the tools 40 and blank 6 may be so regulated that the desired expansion of the passageway 7 takes place.
  • the instant invention may be utilized whenever and wherever a precise configuration of hollow passageway is desired.
  • the single-entry pattern shown in the drawings is by way of example only.
  • the instant invention may be utilized on a blank produced by a method other than the Roll-Bond process.
  • the round configuration of the passageway shown is only one which may be achieved by the instant invention.
  • a method of forming to a. desired configuration an expanded passageway within a panel, said passageway having opposed sides of materials of different hardmess comprising (A) reducing the thickness of said panel at areas on each side of said passageway to cause the passageway to be further expanded, and
  • step (A) is performed by a coining operation on each face of said panel.
  • a method of fabricating a hollow panel having opposed sides of difierent hardness and an internal passageway of a desired configuration comprising (A) superimposing a first sheet upon a second sheet,
  • said first and second sheets being of different hardness
  • step (D) is performed by a coining operation on each face of said panel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US482061A 1965-08-24 1965-08-24 Method of making a heat exchanger Expired - Lifetime US3377683A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US482061A US3377683A (en) 1965-08-24 1965-08-24 Method of making a heat exchanger
GB35778/66A GB1146632A (en) 1965-08-24 1966-08-10 Passageway forming in panels
NO164315A NO125963B (enrdf_load_stackoverflow) 1965-08-24 1966-08-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US482061A US3377683A (en) 1965-08-24 1965-08-24 Method of making a heat exchanger

Publications (1)

Publication Number Publication Date
US3377683A true US3377683A (en) 1968-04-16

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Family Applications (1)

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US482061A Expired - Lifetime US3377683A (en) 1965-08-24 1965-08-24 Method of making a heat exchanger

Country Status (3)

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US (1) US3377683A (enrdf_load_stackoverflow)
GB (1) GB1146632A (enrdf_load_stackoverflow)
NO (1) NO125963B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309305A1 (fr) * 1975-05-02 1976-11-26 Olin Corp Procede de fabrication et de calibrage de panneaux d'echange de chaleur
US4081026A (en) * 1975-11-17 1978-03-28 Olin Corporation Hollow article
US4209885A (en) * 1978-08-28 1980-07-01 Olin Corporation Process and apparatus for making composite sheet and heat exchanger panels therefrom
US4224817A (en) * 1979-01-29 1980-09-30 Olin Corporation Apparatus and process for making tube in sheet heat exchangers
US4227391A (en) * 1979-01-29 1980-10-14 Olin Corporation Process for making tube in sheet heat exchangers
EP0117119A3 (en) * 1983-02-14 1987-12-02 Texas Instruments Incorporated Stiffened structural member and method of making
WO2003062719A1 (de) * 2002-01-23 2003-07-31 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und werkzeug zum montieren einer kapillarleitung in einer verdampferplatine und damit hergestellte verdampferplatine
CZ297035B6 (cs) * 2003-08-11 2006-08-16 Nettechnik V.O.S. Solární kolektor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1259220B (it) * 1992-07-23 1996-03-11 Zanussi Elettrodomestici Procedimento per realizzare evaporatori perfezionati

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740188A (en) * 1952-05-24 1956-04-03 Gen Motors Corp Method of making a heat exchanger element
US2819884A (en) * 1954-08-25 1958-01-14 Metal Specialty Company Pressure-welded tubing
US2999308A (en) * 1957-06-03 1961-09-12 Olin Mathieson Heat exchanger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740188A (en) * 1952-05-24 1956-04-03 Gen Motors Corp Method of making a heat exchanger element
US2819884A (en) * 1954-08-25 1958-01-14 Metal Specialty Company Pressure-welded tubing
US2999308A (en) * 1957-06-03 1961-09-12 Olin Mathieson Heat exchanger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2309305A1 (fr) * 1975-05-02 1976-11-26 Olin Corp Procede de fabrication et de calibrage de panneaux d'echange de chaleur
US4081026A (en) * 1975-11-17 1978-03-28 Olin Corporation Hollow article
US4209885A (en) * 1978-08-28 1980-07-01 Olin Corporation Process and apparatus for making composite sheet and heat exchanger panels therefrom
US4224817A (en) * 1979-01-29 1980-09-30 Olin Corporation Apparatus and process for making tube in sheet heat exchangers
US4227391A (en) * 1979-01-29 1980-10-14 Olin Corporation Process for making tube in sheet heat exchangers
EP0117119A3 (en) * 1983-02-14 1987-12-02 Texas Instruments Incorporated Stiffened structural member and method of making
WO2003062719A1 (de) * 2002-01-23 2003-07-31 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und werkzeug zum montieren einer kapillarleitung in einer verdampferplatine und damit hergestellte verdampferplatine
CZ297035B6 (cs) * 2003-08-11 2006-08-16 Nettechnik V.O.S. Solární kolektor

Also Published As

Publication number Publication date
NO125963B (enrdf_load_stackoverflow) 1972-12-04
GB1146632A (en) 1969-03-26

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