US3866286A - Method of making a finned tube heat exchanger having a circular cross section - Google Patents

Method of making a finned tube heat exchanger having a circular cross section Download PDF

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Publication number
US3866286A
US3866286A US375764A US37576473A US3866286A US 3866286 A US3866286 A US 3866286A US 375764 A US375764 A US 375764A US 37576473 A US37576473 A US 37576473A US 3866286 A US3866286 A US 3866286A
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United States
Prior art keywords
tubular member
ribs
fins
outwardly
walls
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
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US375764A
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English (en)
Inventor
Stephen F Pasternak
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.)
Peerless of America Inc
Original Assignee
Peerless of America Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peerless of America Inc filed Critical Peerless of America Inc
Priority to US375764A priority Critical patent/US3866286A/en
Priority to CA196,739A priority patent/CA1016345A/en
Priority to GB1582874A priority patent/GB1433110A/en
Priority to DE2419713A priority patent/DE2419713A1/de
Priority to JP4837174A priority patent/JPS5330115B2/ja
Application granted granted Critical
Publication of US3866286A publication Critical patent/US3866286A/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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/068—Shaving, skiving or scarifying for forming lifted portions, e.g. slices or barbs, on the surface of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • 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
    • F28F1/124—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 and being formed of pins
    • 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

  • ABSTRACT A method of making heat exchangers in the form of an elongated tubular member, of substantially round transverse cross-section and having outwardly projecting fins thereon, which include initially forming the tubular member into a substantially rectangular transverse cross-sectional shape, forming the fins on the outer faces of the tubular member, and then expanding the tubular member into the aforementioned sub stantially round cross-sectional shape.
  • Another object of the present invention is to afford a novel method of making a tubular heat exchanger, which is substantially round in transverse cross-section and has outwardly projecting spines or fins on the outer periphery thereof.
  • a further object of the present invention is to afford a novel method of making a substantially round heat exchanger embodying integrally formed spine-type fins.
  • Heat exchangers which are susbstantially round in transverse cross section and embodying integral spinefins on the outer periphery thereof have been heretofore known in the art, being shown for example in R. W. Kritzer US. Pat. No. 2,247,243 wherein needle-like spines are cut or gouged from the round, tubular wall of the heat exchanger in relatively thin, sharp slivers; in my US. Pat. No. 3,727,682, which discloses a round, tubular heat exchanger wherein spines are cut or sliced from the outer periphery of the heat exchanger during relative rotary movement between a cutting tool and the tubular member; and R. W. Kritzer US. Pat. No. 3,360,040 wherein longitudinally extending fins on the outer periphery of such a round tubular member are transversely slit to form the outwardly projecting spines.
  • Another object of the present invention is to afford a novel method of making an externally spined heat exchanger, which is substantially round in transverse cross section, wherein the spines may be integrally formed on substantially flat surfaces of substantial width.
  • Yet another object of the present invention is to enable an internally ribbed, outwardly spined heat exchanger, which is substantially round in transverse cross section, to be made in a novel and expeditious manner.
  • a further object of the present invention is to afford a novel method of making an externally spined tubular heat exchanger, having a substantially round transverse cross section, which is practical and efficient, and which may be readily and economically used commercially.
  • FIG. 1 is a perspective view of a heat exchanger, exemplifying the preferred type of construction afforded by the present invention
  • FIG. 2 is an end view of the. heat exchanger-shown in FIG. 1;
  • FIG. 3 is a fragmentary, perspective view of a tubular member, illustrating an intermediate step in the formation of the heat exchanger shown in FIG. 1;
  • FIG. 4 is a fragmentary longitudinal sectional view taken substantially along the lines 44 in FIG. 3;
  • FIG. 5 is a somewhat diagrammatic view, illustrating a modified form of the present invention.
  • FIG. 6 is an end view of a tubular member, illustrating a step in another modified form of the present invention.
  • FIG. 7 is an end view, similar to FIG. 2, but illustrating the type of heat exchanger afforded by the method embodying the step illustrated in FIG. 6;
  • FIG. 8 is an end view of a tubular member, illustrating an intermediate step in another modified form of the present invention.
  • FIGS. 1 and 2 of the drawings A tubular heat exchanger or heat transfer element 1 is shown in FIGS. 1 and 2 of the drawings to illustrate a a preferred form of heat transfer element to be afforded by the preferred method of the present invention.
  • the heat exchanger 1 is substantially round in transverse cross section and embodies an elongated tubular sidewall portion 2, from the outer periphery of which a plurality of rows 3 of fins in the form of elongated spines 4 project outwardly.
  • the rows 3, preferably, are disposed in parallel relation to each other, and extend longitudinally of the wall portion 3 in parallel relation to the longitudinal axis of the latter.
  • a tubular member 5, FIGS. 3 and 4 is first formed of any suitable material, such asffor example, aluminum, the tubular member having the construction of the end portion 6 of the tubular member 5, shown in FIG. 3.
  • the tubular member 5, when it is so formed is substantially rectangular in transverse cross section, and embodies two substantially parallel, oppositely disposed sidewall portions 7 and 8, interconnected at their respective, opposite longitudinal edges by two other oppositely disposed sidewall portions 9 and 10, which, preferably, are slightly convex outwardly, as shown in FIG. 3.
  • the tubular member is of greater width between the sidewall portions 9 and 10 then it is between the sidewall portions 7 and 8.
  • Each of the sidewall portions 7 and 8 has a plurality of elongated ribs 11 projecting transversely, outwardly from the outer face thereof, and extending longitudinally thereof in parallel, transversely spaced relation to each other, FIG. 3.
  • the fins 4 may be formed thereon in the rows 3 by successively, from one end portion of the tubular member A toward the other end portion B thereof, cutting or gouging the rows 3 of fins 4 from the respective ribs 11 in the manner disclosed in the aforementioned Kritzer US. Pat. No. 3,202,212.
  • the spines or fins 4 are formed on each rib 11 by means of a suitable cutting tool, which first cuts along lengthwise of the respective rib to form the surface 12, FIG. 3, and then continues to form the surface I3.
  • the spine thus cut or gouged from the rib is then bent outwardly preferably to approximately 90 with respect to the plane of the rib. This gives each spine a configuration illustrated in FIGS.
  • each spine 4 has a base portion 14, integral with the respective wall portion 7 or 8 to which it is attached, an intermediate thin portion 15 of rectangular cross section, a portion 16 sloping outwardly from the intermediate portion 15 to afford an enlarged portion 17, and another portion 18 sloping inwardly from the enlarged portion 17 and terminating at the outer end of the spine 4 in a thin edge 19, FIG. 4.
  • the cutting operation causes the fins 4 to compress longitudinally so that, as a practical matter, the enlargements 17 substantiallydisappear on fins of usual thickness, to thereby afford a relatively smooth-sided appearance for the outer ends of the fins 4 similar to that shown in FIG. I.
  • the tubular member 5 may be cut off to the desired length, such as, for example, the length of the heat exchanger 1, FIG. 1, and expanded into a form wherein the transverse cross-sectional shape thereof is round, or substantially round, to thereby afford the heat exchanger 1 shown in FIGS. 1 and 2.
  • the sidewall portions 7-10 are disposed in such relation to each other as to afford the substantially circular shaped sidewall portion 2, with the rows 3 of fins 4 on the sidewall portions 7 and 8 separated by the arcuate shaped sidewall portions 9 and 10, FIG. 2.
  • the spacing of the rows 3 on the sidewall portion 7 from the rows 3 on the sidewall portion 8 may be controlled by controlling the width of the sidewall portions 9 and 10, the spacing being greater with greater widths of the sidewall portions 9 and 10 and being lesser with lesser widths of the sidewall portions 9 and 10.
  • the tubular member 5 may be internally supported, if desired, such as, for example, by inserting a supporting block or rod, such as the rod 20 shown in broken lines in FIG. 4 thereinto, the rod 20, preferably, complete filling the tubular member 5 and being disposed therein with a snug but freely slidable fit.
  • the rod 20 may be removed prior to expansion of the tubular member 5 into the finished form represented by the heat exchanger 1.
  • the expansion of the tubular member 5 from the shape shown in FIGS. 3 and 4 into the shape which affords the substantially round tubular member 2 of the heat exchanger 1, shown in FIGS. 1 and 2, may be accomplished in any suitable manner such as, for example, mechanically expanding it by passing a mandrel, such as, for example, an internal expanding mandrel or draw rod therethrough.
  • a mandrel such as, for example, an internal expanding mandrel or draw rod therethrough.
  • a pneumatic or hydraulic pressure in the nature of from 550 to 750 pounds per square inch is suitable for effectingthe desired expansion of a tubular member of the type of the member 5, shown in FIG. 3, to a substantially round tubular member, such as the tubular member 2, shown in FIGS. 1 and 2.
  • the initial, slightly convex-outwardly shape of the narrower sidewalls 9 and 10 assists in the forming of the round shape of the sidewall 2 in the finished heat exchanger.
  • the fins 4 may be formed on the tubular member 5 at an intermediate portion thereof, which is spaced from the opposite ends of the tubular member 5. Subsequently, during the expansion of the tubular member 5 into the aforementioned substantially round, transverse cross sectional shape, the opposite end portions of the tubular member 5 may be firmly clamped by suitable means such as clamping dies, or the like, not shown, so as to prevent expansion of the end portions, and working fluid may then be passed into the tubular member 5 to thereby cause expansion of the intermediate portion thereof, disposed between the aforementioned opposite end portions.
  • This method is effective to produce a heat exchanger of the type somewhat diagrammatically illustrated in FIG.
  • a tubular member 5b which comprises a modified form of the original tubular member 5, as represented by the end portion 6 of the tubular member 5 shown in FIG. 3.
  • the tubular member 5b is identical in construction to the aforementioned tubular member 5 except that the tubular member 5b embodies a plurality of ribs 24 extending between the sidewall portions 7 and 8 and disposed in substantially parallel, spaced relation to each other between the sidewalls 9 and 10.
  • the internal ribs 24 extend longitudinally of the tubular member 5b throughout the full length thereof, and preferably embody weakened portions 25 midway between the sidewall portions 7 and 8.
  • the tubular member 5b may be formed in any suitable manner such as, by extruding the same. and the weakened portions 25 may be formed therein by reducing the thickness of the aforementioned mid portion of the ribs 24 to a thickness substantially less than the thickness of the remainder thereof.
  • the tubular member which is formed as the first step of the method of making a heat exchanger in the practice of the present invention, constructed in the manner of the tubular member 5b, shown in FIG. 6, effective internal support is afforded for the sidewall portions 7 and 8 during the forming of fins 4 on the ribs 1 1.
  • the weakened portion 25 is of sufficiently narrow thickness that the internal ribs 24 may be servered therealong merely by the application of the pressure afforded by the working fluid fed into the tubular member 5b, after the spines have been formed on the ribs 11 thereof, in the same manner as hereinbefore described with respect to tubular member 5, shown in FIG. 3.
  • the internal ribs 24 may be slit along the mid-portions thereof after the fins 4 have been formed on the tubular member 5b, and before the latter is expanded by the passing of working fluid thereinto.
  • the heat exchanger which results from the method including the formation of a tubular member such as the tubular member 5b, FIG. 6, is similar in construction to the heat exchanger shown in FIG. 2, but instead of having an unobstructed passageway therethrough, embodies internal ribs 26, which are afforded by the severed portions of the ribs 24.
  • FIG. 8 an intermediate step in another modified form of method of the present invention is shown.
  • the tubular member 5 is flattened from the form shown in FIG. 3 to a form such as that shown in FIG. 8, wherein the sidewall portions 7 and 8 are disposed in close adjacent relation to each other and the sidewalls 9 and 10 are bowed outwardly.
  • Such flattening of the tubular member 5 may be accomplished in any suitable manner such as, for example, passing the same between rollers having ribs thereon, which mate with the spaces between the ribs 11.
  • Such flattening of the tubular member 5 preferably is accomplished by the cold working thereof so as not to effect any welding together of the sidewall portions 7 and 8.
  • the flattening is carried out to such an extent that the sidewall portions 7 and 8 are disposed in abutting engagement with each other, or, at least, to an extent that the passageway through the tubular member 5 is reduced to such a narrow slit that support is afforded between the adjacent sidewall portions 7 and 8 during the subsequent operation, wherein the fins 4 are cut of gouged from the ribs ll.
  • the flattening of the tubular member 5, during the method illustrated in FIG. 8 is of such magnitude that the aforementioned support is afforded between the sidewall members 7 and 8, if the flattening is not carried out to such an extent, suitable support for the sidewall members 7 and 8 during the fin-cutting operation, may be afforded by passing a block or rod, not shown, of suitable dimensions into the tubular member 5, in a manner similar to that in which the rod 29 is shown inserted into the tubular member 5 in FIG. 4, to afford the desired support for the sidewall portions 7 and 8 during forming of the fins 4.
  • the tubular member 5 is flattened, as illustrated in FIG. 8, after such flattening of the tubular member 5, the rows 3 of the fins 4 are formed on the ribs 11 in the same manner as hereinbefore described with respect to the method wherein expansion is effected of a tubular member from the shape shown in FIG. 3.
  • a suitable tool such as, for example, a wedge-shaped tool, not shown, is inserted into one end portion of the tubular member 5 for a suitable distance such as, for example 2 to 3 inches, to thereby open the end portion sufficiently to facilitate the subsequent expansion of the tubular member.
  • This preliminary expansion of the one end portion of the flattened tubular member 5 may be of any suitable amount, such as, for example, that sufficient to move the end portions of the sidewalls 7 and 8 away from each other a distance of between V; and inch.
  • the subsequent expansion of the flattened tubular member 5, after the aforementioned initial opening or expansion of the one end portion thereof may be effected mechanically or by the use of pressurized working fluid as previously discussed with respect to the method illustrated in FIGS. 1-4. If it is to be performed mechanically, preferably it is accomplished by the passage of a suitable expanding mandrel, such as, for example, a bullet-shaped mandrel, which may be inserted into the preliminarily expanded one end portion of the tubular member, and then passed onwardly through the tubular member 5. If working fluid such as, for example, compressed air or hydraulic fluid is used for expanding the tubular member 5, it may be fed thereinto through the aforementioned one end thereof.
  • a suitable expanding mandrel such as, for example, a bullet-shaped mandrel
  • the present invention affords a novel method of making an externally spined tubular heat exchanger which is substantially round in transverse cross section.
  • the present invention affords a novel method of the aforementioned type which is commercially practical and efficient.
  • a heat transfer element comprising a. forming an elongated tubular member having 1. a transverse width in one direction which is greater than the width thereof in the direction perpendicular to said one direction,
  • a. said forming of said tubular member includes forming a plurality of internal ribs therein, which I. extend longitudinally thereof, and
  • said expanding of said tubular member includes separating each of said internal ribs into two spaced parts.
  • the method of making a heat transfer element comprising a. forming an elongated tubular member having 1. a substantially rectangular transverse crosssectional shape.
  • said expanding means includes a tool

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US375764A 1973-07-02 1973-07-02 Method of making a finned tube heat exchanger having a circular cross section Expired - Lifetime US3866286A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US375764A US3866286A (en) 1973-07-02 1973-07-02 Method of making a finned tube heat exchanger having a circular cross section
CA196,739A CA1016345A (en) 1973-07-02 1974-04-03 Method of making integral fin expanded-tube heat exchangers
GB1582874A GB1433110A (en) 1973-07-02 1974-04-10 Method of making a heat exchanger
DE2419713A DE2419713A1 (de) 1973-07-02 1974-04-24 Verfahren zur herstellung eines rekuperators mit kreisrundem rohrquerschnitt und plattenfoermigen waermeaustauschflaechen
JP4837174A JPS5330115B2 (show.php) 1973-07-02 1974-05-01

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Application Number Priority Date Filing Date Title
US375764A US3866286A (en) 1973-07-02 1973-07-02 Method of making a finned tube heat exchanger having a circular cross section

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US3866286A true US3866286A (en) 1975-02-18

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US375764A Expired - Lifetime US3866286A (en) 1973-07-02 1973-07-02 Method of making a finned tube heat exchanger having a circular cross section

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US (1) US3866286A (show.php)
JP (1) JPS5330115B2 (show.php)
CA (1) CA1016345A (show.php)
DE (1) DE2419713A1 (show.php)
GB (1) GB1433110A (show.php)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4166498A (en) * 1976-07-13 1979-09-04 Hitachi, Ltd. Vapor-condensing, heat-transfer wall
US4195688A (en) * 1975-01-13 1980-04-01 Hitachi, Ltd. Heat-transfer wall for condensation and method of manufacturing the same
DE3219095A1 (de) * 1982-05-21 1983-11-24 Richard Walker 60601 Chicago Ill. Kritzer Verfahren zur herstellung von waermeaustauschern mit darauf gebildeten finnen
DE3231989A1 (de) * 1982-08-27 1984-03-01 Richard Walker 60601 Chicago Ill. Kritzer Verfahren zur herstellung von waermetauschern
US4753833A (en) * 1986-09-26 1988-06-28 Fishgal Semyon I Hollow article with zigzag projections
US4794985A (en) * 1987-04-29 1989-01-03 Peerless Of America Incorporated Finned heat exchanger tubing with varying wall thickness
US4872255A (en) * 1981-09-29 1989-10-10 Kolektor P.O. Method of manufacturing commutators
WO1994025217A3 (fr) * 1993-04-30 1994-12-22 Nikolai Nikolaevich Zubkov Procede de production d'une surface a nervures et depressions alternees et outil de mise en ×uvre du procede
US5758720A (en) * 1996-11-26 1998-06-02 Behr America, Inc. Unitary heat exchanger core and method of making same
WO1998051430A1 (en) * 1997-05-13 1998-11-19 Ab Webra Industri A method of producing a heat transfer device
US20070236884A1 (en) * 2006-04-06 2007-10-11 Foxconn Technology Co., Ltd. Heat sink and method for manufacturing the same
US20080093065A1 (en) * 2006-10-24 2008-04-24 Wai Kwan Cheung Heat exchanger tube for heating system
CN103791755A (zh) * 2014-02-21 2014-05-14 江苏萃隆精密铜管股份有限公司 蒸发器用的高效换热管
CN104555157A (zh) * 2014-12-24 2015-04-29 李延岭 一种可加热罐体的底部热量快速分散系统
EP4086560A1 (de) * 2021-05-05 2022-11-09 Diehl Metall Stiftung & Co. KG Kühlkörper zur herstellung eines ringkühlers
US11612929B2 (en) 2017-01-30 2023-03-28 Gripmetal Limited Texture workpiece and method for texturing a workpiece
US20240268078A1 (en) * 2023-02-02 2024-08-08 Amulaire Thermal Technology, Inc. Two-phase immersion-cooling heat-dissipation structure having skived fins

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5624867Y2 (show.php) * 1976-09-04 1981-06-11
US4337826A (en) * 1979-02-26 1982-07-06 Peerless Of America, Inc. Heat exchangers and method of making same
US4554970A (en) * 1982-06-10 1985-11-26 Peerless Of America, Inc. Heat exchangers and method of making same
GB8614394D0 (en) * 1986-06-13 1986-07-16 Metal Box Plc Containers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136037A (en) * 1955-10-31 1964-06-09 Olin Mathieson Method of constructing finned heat exchangers from bonded metal sheets
US3202212A (en) * 1963-07-29 1965-08-24 Peerless Of America Heat transfer element
US3222764A (en) * 1962-02-28 1965-12-14 Continental Can Co Method of making articles having base layers and integral fins projecting therefrom
US3692105A (en) * 1970-09-02 1972-09-19 Peerless Of America Heat exchangers
US3781959A (en) * 1970-09-02 1974-01-01 Peerless Of America Method of fabricating a finned heat exchanger tube
US3791003A (en) * 1970-02-24 1974-02-12 Peerless Of America Method of frabricating a plural finned heat exchanger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136037A (en) * 1955-10-31 1964-06-09 Olin Mathieson Method of constructing finned heat exchangers from bonded metal sheets
US3222764A (en) * 1962-02-28 1965-12-14 Continental Can Co Method of making articles having base layers and integral fins projecting therefrom
US3202212A (en) * 1963-07-29 1965-08-24 Peerless Of America Heat transfer element
US3791003A (en) * 1970-02-24 1974-02-12 Peerless Of America Method of frabricating a plural finned heat exchanger
US3692105A (en) * 1970-09-02 1972-09-19 Peerless Of America Heat exchangers
US3781959A (en) * 1970-09-02 1974-01-01 Peerless Of America Method of fabricating a finned heat exchanger tube

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195688A (en) * 1975-01-13 1980-04-01 Hitachi, Ltd. Heat-transfer wall for condensation and method of manufacturing the same
US4166498A (en) * 1976-07-13 1979-09-04 Hitachi, Ltd. Vapor-condensing, heat-transfer wall
US4872255A (en) * 1981-09-29 1989-10-10 Kolektor P.O. Method of manufacturing commutators
DE3219095A1 (de) * 1982-05-21 1983-11-24 Richard Walker 60601 Chicago Ill. Kritzer Verfahren zur herstellung von waermeaustauschern mit darauf gebildeten finnen
DE3231989A1 (de) * 1982-08-27 1984-03-01 Richard Walker 60601 Chicago Ill. Kritzer Verfahren zur herstellung von waermetauschern
US4753833A (en) * 1986-09-26 1988-06-28 Fishgal Semyon I Hollow article with zigzag projections
US4794985A (en) * 1987-04-29 1989-01-03 Peerless Of America Incorporated Finned heat exchanger tubing with varying wall thickness
WO1994025217A3 (fr) * 1993-04-30 1994-12-22 Nikolai Nikolaevich Zubkov Procede de production d'une surface a nervures et depressions alternees et outil de mise en ×uvre du procede
US5870825A (en) * 1996-11-26 1999-02-16 Behr America, Inc. Method of making unitary heat exchanger core
US5758720A (en) * 1996-11-26 1998-06-02 Behr America, Inc. Unitary heat exchanger core and method of making same
WO1998051430A1 (en) * 1997-05-13 1998-11-19 Ab Webra Industri A method of producing a heat transfer device
US6138489A (en) * 1997-05-13 2000-10-31 Ab Webra Method of making a heat transfer device
US20070236884A1 (en) * 2006-04-06 2007-10-11 Foxconn Technology Co., Ltd. Heat sink and method for manufacturing the same
US20080093065A1 (en) * 2006-10-24 2008-04-24 Wai Kwan Cheung Heat exchanger tube for heating system
CN103791755A (zh) * 2014-02-21 2014-05-14 江苏萃隆精密铜管股份有限公司 蒸发器用的高效换热管
CN104555157A (zh) * 2014-12-24 2015-04-29 李延岭 一种可加热罐体的底部热量快速分散系统
US11612929B2 (en) 2017-01-30 2023-03-28 Gripmetal Limited Texture workpiece and method for texturing a workpiece
EP4086560A1 (de) * 2021-05-05 2022-11-09 Diehl Metall Stiftung & Co. KG Kühlkörper zur herstellung eines ringkühlers
US20240268078A1 (en) * 2023-02-02 2024-08-08 Amulaire Thermal Technology, Inc. Two-phase immersion-cooling heat-dissipation structure having skived fins
US12477695B2 (en) * 2023-02-02 2025-11-18 Amulaire Thermal Technology, Inc. Two-phase immersion-cooling heat-dissipation structure having skived fins

Also Published As

Publication number Publication date
DE2419713A1 (de) 1975-01-30
CA1016345A (en) 1977-08-30
JPS5330115B2 (show.php) 1978-08-24
GB1433110A (en) 1976-04-22
JPS5023372A (show.php) 1975-03-13

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