DE546836C - Laengsrippenrohr, which is composed of individual longitudinal segments - Google Patents

Laengsrippenrohr, which is composed of individual longitudinal segments

Info

Publication number
DE546836C
DE546836C DENDAT546836D DE546836DD DE546836C DE 546836 C DE546836 C DE 546836C DE NDAT546836 D DENDAT546836 D DE NDAT546836D DE 546836D D DE546836D D DE 546836DD DE 546836 C DE546836 C DE 546836C
Authority
DE
Germany
Prior art keywords
laengsrippenrohr
individual longitudinal
longitudinal segments
segments
pipe
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
DENDAT546836D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of DE546836C publication Critical patent/DE546836C/en
Expired legal-status Critical Current

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
    • F28F1/14—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 longitudinally

Landscapes

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

Description

546546

Für Wärmeaustauschvorrichtungen der verschiedensten Art für Kühlanlagen und ähnliche Zwecke werden Rohre mit Längsrippen benötigt, wobei Luft in axialer Richtung über die Rohre mit hoher Geschwindigkeit streicht und innen meist ein erheblicher Druck herrscht. Das nachträgliche Auf schweißen von derartigen Rippen an glatte Rohre ist wegen des schlechten Wärmeüberganges nicht zweckmäßig, eine Punktschweißung auch unmöglich, da es ausgeschlossen ist, mit der zweiten Elektrode in das Innere des meist langen Rohres zu kommen.For heat exchange devices of various types for refrigeration systems and the like Purposes are needed tubes with longitudinal ribs, with air flowing over in the axial direction strokes the pipes at high speed and there is usually considerable pressure inside prevails. The subsequent welding of such ribs on smooth tubes is due the poor heat transfer is not useful, spot welding is also impossible, since it is impossible to use the second electrode in the interior of the mostly long one Pipe to come.

Es sind auch schon aus Stahlblech hergestellte gefalzte Längsrippenrohre bekannt, die. einen annähernd kreisrunden Rohrquerschnitt mit doppelwandigen Längsblechrippen aufweisen, die durch Falzung entstanden und genietet oder verschweißt sind. Derartige Rohre ao genügen aber den erhöhten Ansprüchen zu dem eingangs erwähnten Zweck bezüglich Wärmeabgabe,. Steifheit und Dichtheit nicht. Abhilfe bringt das Rohr gemäß der Erfindung. Auch ist es zwar aus einzelnen — meist W-fÖrmigen — Blechsegmenten zusammengesetzt, aber die aneinanderliegenden Schenkel der Segmente sind nahe am Rohr verschweißt und dann außerhalb der Schweißnaht auseinandergespreizt. Durch letztere Maßnahme wird nicht allein verhindert, daß die Enden der Rippen infolge Wärmespannung flattern, sondern auch eine vorzügliche Steifheit, ein guter Wärmeaustausch und eine große Oberfläche mit einfachen Mitteln erreicht.There are also already known folded longitudinal finned tubes made of sheet steel, which. have an approximately circular pipe cross-section with double-walled longitudinal sheet metal ribs, created by folding and riveted or welded. Such pipes ao, however, meet the increased requirements for the purpose mentioned at the beginning Heat emission ,. Rigidity and tightness are not. The pipe according to the invention provides a remedy. It is also composed of individual - mostly W-shaped - sheet metal segments, but the adjacent legs of the segments are welded close to the pipe and then spread apart outside the weld. By the latter measure not only prevents the ends of the ribs from fluttering due to thermal stress, but also excellent rigidity, good heat exchange and a large surface area achieved by simple means.

In der beiliegenden Schnittzeichnung stellen α und b die aneinanderliegenden Schenkel der Segmente^ dar, die bei / elektrisch verschweißt und dann auseinandergespreizt (aufgebogen) sind.In the attached sectional drawing, α and b represent the adjacent legs of the segments ^ which are electrically welded at / and then spread apart (bent up).

Claims (1)

Patentanspkuch-:Patent claim: Längsrippenrohr, das aus einzelnen Längssegmenten zusammengesetzt ist, dadurch gekennzeichnet, daß die aneinanderliegenden Schenkel der Segmente nahe am Rohr verschweißt und außerhalb der Schweißnaht auseinandergespreizt sind.Longitudinal finned tube, which is composed of individual longitudinal segments, thereby characterized in that the adjacent legs of the segments are welded close to the pipe and outside of the Weld seam are spread apart. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DENDAT546836D Laengsrippenrohr, which is composed of individual longitudinal segments Expired DE546836C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE546836T

Publications (1)

Publication Number Publication Date
DE546836C true DE546836C (en) 1932-03-17

Family

ID=6561337

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT546836D Expired DE546836C (en) Laengsrippenrohr, which is composed of individual longitudinal segments

Country Status (1)

Country Link
DE (1) DE546836C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535721A (en) * 1946-06-14 1950-12-26 Chausson Usines Sa Cylindrical heat exchanger
US2752129A (en) * 1951-01-13 1956-06-26 Modine Mfg Co Convector or other heat exchange device
DE1076931B (en) * 1956-04-26 1960-03-03 Otto Gerhard Tubular heater
DE3509349A1 (en) * 1985-03-15 1986-09-18 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Heat exchanger for heaters
US5060716A (en) * 1989-03-31 1991-10-29 Heine William F Heat dissipating device and combination including same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535721A (en) * 1946-06-14 1950-12-26 Chausson Usines Sa Cylindrical heat exchanger
US2752129A (en) * 1951-01-13 1956-06-26 Modine Mfg Co Convector or other heat exchange device
DE1076931B (en) * 1956-04-26 1960-03-03 Otto Gerhard Tubular heater
DE3509349A1 (en) * 1985-03-15 1986-09-18 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Heat exchanger for heaters
US5060716A (en) * 1989-03-31 1991-10-29 Heine William F Heat dissipating device and combination including same

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