NL6913657A - Helically wound, finned tubes used for heat - exchangers - Google Patents

Helically wound, finned tubes used for heat - exchangers

Info

Publication number
NL6913657A
NL6913657A NL6913657A NL6913657A NL6913657A NL 6913657 A NL6913657 A NL 6913657A NL 6913657 A NL6913657 A NL 6913657A NL 6913657 A NL6913657 A NL 6913657A NL 6913657 A NL6913657 A NL 6913657A
Authority
NL
Netherlands
Prior art keywords
tube
helically wound
foot
finned tubes
tubes used
Prior art date
Application number
NL6913657A
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 filed Critical
Priority to NL6913657A priority Critical patent/NL6913657A/en
Publication of NL6913657A publication Critical patent/NL6913657A/en

Links

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
    • F28F1/10—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
    • F28F1/34—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 obliquely
    • F28F1/36—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 obliquely the means being helically wound fins or wire spirals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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

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

Helically wound, finned tubes used for heat exchangers. Comprises a tube and a helically wound, continuous fin with an L-shaped cross-section, a horizontal foot and a shank which extends outwards is tapered inwards, and consists of easily deformed material. The shank is wound around the tube so that the outer side of the foot contacts the outer circumference of the tube while the foot turns towards the smooth side of the tube when the fin is formed. The following fin is formed on to the foot so that a single heat transfer surface is obtained. Spec, the method of tube manufacture is also described.
NL6913657A 1969-09-08 1969-09-08 Helically wound, finned tubes used for heat - exchangers NL6913657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL6913657A NL6913657A (en) 1969-09-08 1969-09-08 Helically wound, finned tubes used for heat - exchangers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6913657A NL6913657A (en) 1969-09-08 1969-09-08 Helically wound, finned tubes used for heat - exchangers

Publications (1)

Publication Number Publication Date
NL6913657A true NL6913657A (en) 1971-03-10

Family

ID=19807853

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6913657A NL6913657A (en) 1969-09-08 1969-09-08 Helically wound, finned tubes used for heat - exchangers

Country Status (1)

Country Link
NL (1) NL6913657A (en)

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Legal Events

Date Code Title Description
BN A decision not to publish the application has become irrevocable