CH175590A - Tubular heat exchange body. - Google Patents

Tubular heat exchange body.

Info

Publication number
CH175590A
CH175590A CH175590DA CH175590A CH 175590 A CH175590 A CH 175590A CH 175590D A CH175590D A CH 175590DA CH 175590 A CH175590 A CH 175590A
Authority
CH
Switzerland
Prior art keywords
heat exchange
ribs
exchange body
tubular heat
body according
Prior art date
Application number
Other languages
German (de)
Inventor
Kaegi Emil
Original Assignee
Kaegi Emil
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 Kaegi Emil filed Critical Kaegi Emil
Publication of CH175590A publication Critical patent/CH175590A/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
    • F28F1/14—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
    • F28F1/16—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 the means being integral with the element, e.g. formed by extrusion
    • 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
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

  

      Rohrförmiger        Wärmeaustauschkörper.       Für den Wirkungsgrad einer dem  Wärmeaustausch dienenden Leitung ist  neben andern je nach den konkreten Verhält  nissen mehr oder weniger entscheidenden  Faktoren insbesondere die Grösse der wirksa  men Oberfläche entscheidend. Man hat des  halb     insbesondere    für Heizelemente soge  nannte Rippenrohre eingeführt, bei welchen  die Rohre in     relativ    kurzen Abständen mit  radial verlaufenden Rippen versehen sind.  Diese Rohre eignen sich indessen nicht für  alle Verhältnisse, insbesondere dann nicht,  wenn die Wärme von der Rohroberfläche in       achsialer    Richtung abgeführt werden soll.

    Bei vertikal verlaufenden Heizrohren sind  die     Radialrippen    deshalb ungeeignet, weil sie  den natürlichen     Auftrieb    der erwärmten Luft  behindern.  



  Gegenstand der Erfindung ist ein     rohr-          förmiger        Wärmeaustauschkörper,    welcher ge  kennzeichnet ist durch Rippen, welche  wenigstens annähernd in     achsialer    Richtung  des     Wärmeaustauschkörpers        verlaufen..       Derartige rohrförmige Wärmeaustausch  körper eignen sich in vielen Fällen, wo die  Anwendung von Rippenrohren der üblichen  Bauart, d. h. von Rohren mit     Radialrippen,     nicht angängig ist.  



  In der Zeichnung .sind einige Ausfüh  rungsbeispiele von rohrförmigen Wärmeaus  tauschkörpern gemäss Erfindung im Quer  schnitt dargestellt.     Fig.    1 stellt ein zylindri  sches Rohr 1 mit     achsial    verlaufenden Rip  pen 2 dar,     F'ig.    2 ,ein Rohr mit flachem Quer  schnitt;     Fig.    3 und 4 zeigen     Rohre    mit     run-          .dem        bezw.        flachem        Querschnitt,.    bei welchem  die Rippen     achsial    im     Innern    des Rohres  verlaufen.  



  Für besondere     Verhältnisse    kann es sich  empfehlen, ein Rohr zu verwenden, bei wel  chem sowohl auf der Aussenseite, als im  Innern Längsrippen vorgesehen sind. Der  Wärme-     bezw.    Kälteübergang vom im Innern  ,des Rohres strömenden Medium zur Rohr  wandung wird dadurch entscheidend verbes  sert.

   Ein derartiges Rohr lässt sich     in    ein-           facher    Weise dadurch erstellen, dass in ein  Rohr nach     Fig.    1 ein seiner Bohrung entspre  chendes nach     Fig.    3 geschoben wird     bezw.     in     ein    Rohr nach     Fig.    2 ein     solches    nach       Fig.    4.  



  Unter Umständen- kann es sich ferner  empfehlen, die Rippen nicht genau     achsial,     sondern mehr oder weniger schief zur Rohr  achse, gegebenenfalls in Form eines     steilen     Gewindeganges verlaufen zu lassen, wodurch  eine intensive Berührung der zwischen den  Rippen durchstreichenden Medien mit der  Oberfläche derselben bewirkt     wird.  



      Tubular heat exchange body. For the efficiency of a line used for heat exchange, in addition to other factors that are more or less decisive depending on the specific conditions, the size of the effective surface is particularly decisive. One has introduced so-called finned tubes in particular for heating elements, in which the tubes are provided with radially extending ribs at relatively short intervals. However, these pipes are not suitable for all conditions, especially not when the heat is to be dissipated from the pipe surface in the axial direction.

    In the case of vertical heating pipes, the radial ribs are unsuitable because they hinder the natural buoyancy of the heated air.



  The invention relates to a tubular heat exchange body, which is characterized by ribs which run at least approximately in the axial direction of the heat exchange body. H. of pipes with radial ribs, is not acceptable.



  In the drawing .sind some Ausfüh approximately examples of tubular heat exchanger bodies according to the invention shown in cross section. Fig. 1 shows a cylindri cal pipe 1 with axially extending Rip pen 2, F'ig. 2, a tube with a flat cross section; Fig. 3 and 4 show tubes with round .dem respectively. flat cross-section ,. in which the ribs run axially inside the tube.



  For special circumstances, it may be advisable to use a tube in which longitudinal ribs are provided on both the outside and the inside. The heat or The cold transfer from the medium flowing inside the pipe to the pipe wall is significantly improved.

   Such a tube can be created in a simple manner in that a corresponding hole in accordance with FIG. 3 is pushed into a tube according to FIG. in a tube according to FIG. 2 such a tube according to FIG. 4.



  Under certain circumstances, it can also be advisable to let the ribs run not exactly axially, but more or less obliquely to the pipe axis, possibly in the form of a steep thread, which causes intensive contact of the media passing through between the ribs with the surface of the same .

Claims (1)

PATENTANSPRUCH: Rohrförmiger Wärmeaustauschkörper, da durch gekennzeichnet, dass er zwecks Ver grösserung der wirksamen Oberfläche mit Rippen versehen ist, welche wenigstens an nähernd in der Achsrichtung des Wärme austauschkörpers verlaufen. UNTERANSPRÜCHE 1. Wärmeaustauschkörper nach Patentan spruch, dadurch gekennzeichnet, dass er flachen Querschnitt besitzt. 2. Wärmeau.stausehkörper nach Patentan spruch, dadurch gekennzeichnet, dass die Rippen auf der Aussenseite desselben an geordnet sind. PATENT CLAIM: Tubular heat exchange body, characterized in that it is provided with ribs for the purpose of increasing the effective surface area, which run at least approximately in the axial direction of the heat exchange body. SUBClaims 1. Heat exchange body according to patent claim, characterized in that it has a flat cross section. 2. Wärmeau.stausehkörper according to patent claim, characterized in that the ribs are arranged on the outside of the same. 3. Wärmeaustauschkörper nach Patentan spruch, dadurch gekennzeichnet, dass die Rippen im Innern desselben angeordnet sind. 4. Wäxmeaustauschkörper nach Patentan spruch, dadurch gekennzeichnet, dass so wohl auf der Aussenseite als im Innern desselben Längsrippen angeordnet sind. 5. Wärmeaustauschkörper nach Patentan spruch und Unteranspruch 4, dadurch ge kennzeichnet, dass er aus zwei ineinander geschobenen Rohren gebildet ist, von denen das eine mit Aussenrippen und das andere mit Innenrippen versehen ist. 6. Wärmeaustauschkörper nach Patentan spruch, dadurch gekennzeichnet, dass die Rippen die Form eines steilen Gewinde ganges besitzen. 3. Heat exchange body according to claim, characterized in that the ribs are arranged in the interior thereof. 4. Wäxmeaustauschkörper according to patent claim, characterized in that the same longitudinal ribs are arranged on the outside as well as in the interior. 5. Heat exchange body according to claim and dependent claim 4, characterized in that it is formed from two tubes pushed one inside the other, one of which is provided with external ribs and the other with internal ribs. 6. Heat exchange body according to claim, characterized in that the ribs have the shape of a steep thread.
CH175590D 1934-07-31 1934-07-31 Tubular heat exchange body. CH175590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH175590T 1934-07-31

Publications (1)

Publication Number Publication Date
CH175590A true CH175590A (en) 1935-03-15

Family

ID=4426328

Family Applications (1)

Application Number Title Priority Date Filing Date
CH175590D CH175590A (en) 1934-07-31 1934-07-31 Tubular heat exchange body.

Country Status (1)

Country Link
CH (1) CH175590A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7811053A (en) * 1977-11-09 1979-05-11 Interliz Anstalt FLUE FOR A HEATING BOILER.
EP0099875A2 (en) * 1982-07-21 1984-02-01 Alois Schwarz Arrangement for heating central heating water and consumption water
US4694898A (en) * 1984-10-17 1987-09-22 Norsk Hydro A.S. Heat exchanger element comprising a single and integrally extruded member including at least two hollow tubes integrally joined by at least two webs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7811053A (en) * 1977-11-09 1979-05-11 Interliz Anstalt FLUE FOR A HEATING BOILER.
EP0099875A2 (en) * 1982-07-21 1984-02-01 Alois Schwarz Arrangement for heating central heating water and consumption water
EP0099875A3 (en) * 1982-07-21 1984-07-25 Id-Energiesysteme Gesellschaft M.B.H. Heat exchanger
US4694898A (en) * 1984-10-17 1987-09-22 Norsk Hydro A.S. Heat exchanger element comprising a single and integrally extruded member including at least two hollow tubes integrally joined by at least two webs

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