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GB839333A - Improvements in heat transfer units - Google Patents

Improvements in heat transfer units

Info

Publication number
GB839333A
GB839333A GB2394157A GB2394157A GB839333A GB 839333 A GB839333 A GB 839333A GB 2394157 A GB2394157 A GB 2394157A GB 2394157 A GB2394157 A GB 2394157A GB 839333 A GB839333 A GB 839333A
Authority
GB
United Kingdom
Prior art keywords
stock
tools
strips
flanges
severed
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
Application number
GB2394157A
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.)
RICHARD WALKER KRITZER
Original Assignee
RICHARD WALKER KRITZER
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 RICHARD WALKER KRITZER filed Critical RICHARD WALKER KRITZER
Priority to GB2394157A priority Critical patent/GB839333A/en
Publication of GB839333A publication Critical patent/GB839333A/en
Expired legal-status Critical Current

Links

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
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes
    • 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
    • F28F1/24—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 extending transversely
    • F28F1/30—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 extending transversely the means being attachable to the 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
    • 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
    • F28F1/24—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 extending transversely
    • F28F1/32—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 extending transversely the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

839,333. Making heat exchangers; stamping; punching. KRITZER, R. W. July 29, 1957, No. 23941/57 Classes 83(2) and 83 (4). [Also in Group XIII] In a method of making heat transfer units; e.g. airconditionershaving tubing, e.g. of copper and fins, e.g. of aluminium, a continuous web of fin-stock 20, Fig. 1, is formed with openings 21 surrounded by flanges 23 and the stock bent transversely to align the openings and flanges in longitudinal zones to form fins serially connected at alternately opposite ends the longitudinal zones being severed from the stock and constituting strips into which tubing is inserted. Gangs of tools mounted on a head b and a bed a, Figs. 9, 10, operate on longitudinal zones of aluminium fin-stock 20 which is supplied from a reel. The gangs act simultaneously one to each longitudinal zone or strip and the stock is advanced step-by-step so that tools 42, 44 act together to reverse and perforate the bulges 37; 40, Fig. -12, previously formed by the tools 35, 38, after which the punches 49; 51 simultaneously act to form flanges 23a prior to the final formations of flanges 23 by the tools 56, 57. Perforations 25 are formed by the punches 62 acting simultaneously with tools 42, 44. Dies 70, 74 and knives 90, Fig. 14 (not shown) act simultaneously with tools 56, 57 to form, respectively, turbulence ribs 24 and slits 26 between the longitudinal zones, which remain connected by tabs 26a. The stock is stripped from the lower press tools after each step by spring-loaded plungers 68. The strips are finally bent trans- .versely to form an interconnected fin system, Fig. 17, the slits 26 extending substantially through the fins, adjacent zones or strips being attached only by the tabs 26a which are severed as required to separate a single strip or a group of strips from the bent stock. By inserting and expanding tubes in the aligned openings 21 heat transfer units of various tube arrangements are formed, the number of strips severed from the stock and the position of the transverse bends in the stock being varied to suit the particular unit required.
GB2394157A 1957-07-29 1957-07-29 Improvements in heat transfer units Expired GB839333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2394157A GB839333A (en) 1957-07-29 1957-07-29 Improvements in heat transfer units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2394157A GB839333A (en) 1957-07-29 1957-07-29 Improvements in heat transfer units

Publications (1)

Publication Number Publication Date
GB839333A true GB839333A (en) 1960-06-29

Family

ID=10203798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2394157A Expired GB839333A (en) 1957-07-29 1957-07-29 Improvements in heat transfer units

Country Status (1)

Country Link
GB (1) GB839333A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173998A (en) * 1978-02-16 1979-11-13 Carrier Corporation Formed coil assembly
EP0106480A3 (en) * 1982-09-10 1985-01-16 Unipart Group Limited Cooling fins for heat exchanger
FR2594943A1 (en) * 1986-02-25 1987-08-28 Valeo Bundle of tubes with fins having a constant spacing for a heat exchanger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173998A (en) * 1978-02-16 1979-11-13 Carrier Corporation Formed coil assembly
EP0106480A3 (en) * 1982-09-10 1985-01-16 Unipart Group Limited Cooling fins for heat exchanger
FR2594943A1 (en) * 1986-02-25 1987-08-28 Valeo Bundle of tubes with fins having a constant spacing for a heat exchanger

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