CH302665A - Elbow. - Google Patents

Elbow.

Info

Publication number
CH302665A
CH302665A CH302665DA CH302665A CH 302665 A CH302665 A CH 302665A CH 302665D A CH302665D A CH 302665DA CH 302665 A CH302665 A CH 302665A
Authority
CH
Switzerland
Prior art keywords
pipe
section
bend
bent
sections
Prior art date
Application number
Other languages
German (de)
Inventor
Gmbh Junkers Co
Original Assignee
Junkers & Co
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 Junkers & Co filed Critical Junkers & Co
Publication of CH302665A publication Critical patent/CH302665A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/145Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular 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
    • F28F1/24Tubular 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
    • F28F1/32Tubular 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Description

  

      Rohrbogen.       Die     Erfindung        bezieht    sich auf     Rohrbägen,          insbesondere        zum    Verbinden von Rohrab  schnitten von     Wärmeaustauschern    für     gasbe-          heizte    Durchlauferhitzer.  



  Bisher     wurden        Rsshrbögen    der genannten       Art    aus im Querschnitt     kreisrunden    Rohren  gebogen, deren Innendurchmesser etwa     denn          Aussendurchmesser    der zu     verbindenden        Rohr-          abschnitte        entspricht.    Solche runden Rohre  müssen mit einem     verhältnismässig    grossen       Krümmungsradius    gebogen werden, da bei  Unterschreiten     -eines        Mindestkrümmungsradius     die Gefahr     besteht,

      dass die Rohre am In  nenbogen einknicken. Der Abstand     zwischen     den zu verbindenden Rohrabschnitten des       Wärmeaustauschers    russ bei Anwendung, sol  eher Rohrbögen daher ebenfalls verhältnis  mässig gross sein. Ferner liegt dabei auch  der     Krümmungsscheitel    dieser Rohrbögen     in     einem entsprechend     weiten,    Abstand von den       Ansehlussenden    der zu verbindenden Rohrab  schnitte, so dass der     Wärmeaustauscher    grö  ssere     Abmessungen    erhält, als vom wärmetech  nischen     Standpunkt    aus erforderlich ist.  



  Die     Abmessungen    des     Wärmeaustauschers     können demgegenüber ohne     Änderung    des       wärmetechnischen    Wirkungsgrades wesentlich  verkleinert werden, wenn gemäss der     Erfin,          dung    die     Rohrbögen.    aus einem im     Querschnitt     ovalen Rührstück     hergestellt    sind, welches in  der durch die Rohrmittellinie verlaufenden  Ebene der geringsten     Rohrlichtweite    gebogen  ist.

      Diese Rohrstücke     können    mit einem we  sentlich kleineren     Krümmungsradius    gebogen       werden        als    im     Querschnitt        kreisrunde    Rohre,  so dass der Abstand der     Ansehlussöffnungen     voneinander und die Scheitelhöhe des Bogens       kleiner        als    bei Rohrbögen mit runden Rohren  sind.  



  Auf der Zeichnung ist der     Gegenstand     der Erfindung an .einem     Ausführungsbeispiel          veranschaulicht.    Es     zeigen.:          Fig.    1 eine Draufsicht     eines        Wärmeaus-          tauschers    für     ,gasbeheizte        Durchlauferhitzer,          Fig.    2 einen Längsschnitt durch einen  Rohrbögen,       Fig.    3 einen Schnitt nach Linie     III-III     der     Fig.    2.

       o     Durchs den     Lamellenmantel    1, welcher den  ganzen     Wärmeaustauscher        umschliesst,    sind  mehrere     Abschnitte    2     eines        Wasserrohres    hin  durchgeführt, welches     einerseits    an den Kalt  wasserzufluss     und        anderseits    an den Warm  wasserablauf angeschlossen ist.

   Auf den Rohr  abschnitten 2     sind        eine        Anzahl        Blechlamellen     S 'in einem     gewissen    Abstand voneinander an  geordnet, die mit     ihren    Stirnseiten an den  gegenüberliegenden Stellen des     Lamellenman-          tels        1befestigt    sind. Die durch den     Lamellen-          mautel        hindurchragenden        äussern    Enden der       Rohrabschnitte    2 sind     durch    Rohrbögen 4  miteinander verbunden.

   Diese Rohrbögen 4  sind aus einem im Querschnitt     ovalen    Rohr  stück hergestellt, welches in der in     Fig.    3  durch eine     strichpunktierte    Linie 5 angedeu-           teten,    durch .die     Rohrmittellinie    verlaufenden  Ebene der geringsten Lichtweite des Rohres  in die gewünschte Form gebogen ist. Die  offenen,     geraden        Anschlussenden    6 des Rohr  bogens sind zu     kreiszylindrischen    Anschluss  stutzen ausgeweitet, welche     auf    die Anschluss  enden der Rohre 2 aufgeschoben und dann  durch Löten oder Schweissen     befestigt    werden.  



  In     Fig.    1     ist    ein in der bisher üblichen  Art aus einem im Querschnitt kreisrunden  Rohrstück     hergestellter    Rohrbogen 7     gestri-          chelt        angedeutet.    Es ist ersichtlich, dass die  Scheitelhöhe     ca    und     die    äussere Länge b des  beschriebenen Rohrbogens wesentlich kleinere       Abmessungen    haben als die     entsprechenden          Abmessungen        a'    und     b'    der bisher bekannten       RohrbogenfQrm.  



      Elbow. The invention relates to pipe bends, in particular for connecting Rohrab sections of heat exchangers for gas-heated instantaneous water heaters.



  So far, Rsshrbögen of the type mentioned have been bent from tubes with a circular cross-section, the inside diameter of which corresponds approximately to the outside diameter of the pipe sections to be connected. Such round pipes must be bent with a relatively large radius of curvature, since if the radius of curvature falls below a minimum there is the risk of

      that the pipes buckle at the inner bend. The distance between the pipe sections to be connected of the heat exchanger soot when used, so pipe bends should therefore also be relatively large. Furthermore, the apex of the curvature of these pipe bends is at a correspondingly wide distance from the connection ends of the pipe sections to be connected, so that the heat exchanger has larger dimensions than is necessary from the thermotechnical point of view.



  In contrast, the dimensions of the heat exchanger can be reduced significantly without changing the thermal efficiency if, according to the invention, the pipe bends are made. are made from an oval cross-section stirring piece, which is bent in the plane of the smallest tube clearance running through the tube center line.

      These pipe pieces can be bent with a much smaller radius of curvature than pipes with a circular cross-section, so that the distance between the connection openings and the apex of the bend are smaller than in pipe bends with round pipes.



  In the drawing, the subject matter of the invention is illustrated by an embodiment. 1 shows a plan view of a heat exchanger for gas-heated instantaneous water heaters, FIG. 2 shows a longitudinal section through a pipe bend, FIG. 3 shows a section along line III-III of FIG.

       o Through the lamellar jacket 1, which encloses the entire heat exchanger, several sections 2 of a water pipe are carried out, which is connected on the one hand to the cold water inlet and on the other hand to the hot water outlet.

   On the pipe sections 2 a number of sheet metal lamellas S 'are arranged at a certain distance from one another, which are fastened with their end faces at the opposite points of the lamellar jacket 1. The outer ends of the pipe sections 2 protruding through the lamellae are connected to one another by pipe bends 4.

   These pipe bends 4 are made from a pipe piece which is oval in cross section and which is bent into the desired shape in the plane of the smallest clear width of the pipe, indicated in FIG. 3 by a dash-dotted line 5 and running through the pipe center line. The open, straight connection ends 6 of the pipe bend are expanded to form circular cylindrical connection pieces, which are pushed onto the connection ends of the pipes 2 and then fastened by soldering or welding.



  In FIG. 1, a pipe bend 7 produced in the hitherto customary manner from a pipe section with a circular cross-section is indicated by dashed lines. It can be seen that the apex height ca and the outer length b of the pipe bend described have significantly smaller dimensions than the corresponding dimensions a 'and b' of the previously known pipe bend shape.

 

Claims (1)

PATENTANSPRUCH: Rohrbogen, insbesondere zum Verbinden von Rohrabschnitten von Wärmeaustausehern für gasbeheizte Durchlauferhitzer, dadurch gekennzeichnet, dass er aus einem im Quer schnitt ovalen Rohrstück geformt ist, welches in der durch die Rohrmittellinie verlaufenden Ebene (5) der geringsten Rohrlichtweite ge bogen ist. PATENT CLAIM: Pipe bend, in particular for connecting pipe sections of heat exchangers for gas-heated water heaters, characterized in that it is formed from a pipe section oval in cross section, which is bent in the plane (5) running through the pipe center line of the smallest pipe clearance. UNTER.ANSPRUCII Rohrbogen nach Patentanspruch, dadurch gekennzeichnet, dass seine beiden offenen, ge raden Anschlussenden (6) zu kreiszylindri schen Anschlussstutzen aufgeformt sind. UNTER.ANSPRUCII Elbow pipe according to claim, characterized in that its two open, straight connection ends (6) are molded to form circular-cylindrical connection pieces.
CH302665D 1951-08-20 1952-07-21 Elbow. CH302665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE302665X 1951-08-20

Publications (1)

Publication Number Publication Date
CH302665A true CH302665A (en) 1954-10-31

Family

ID=6107161

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302665D CH302665A (en) 1951-08-20 1952-07-21 Elbow.

Country Status (1)

Country Link
CH (1) CH302665A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008078219A1 (en) * 2006-12-22 2008-07-03 Turk Demir Dokum Fabrikalari Anonim Sirketi A heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008078219A1 (en) * 2006-12-22 2008-07-03 Turk Demir Dokum Fabrikalari Anonim Sirketi A heat exchanger

Similar Documents

Publication Publication Date Title
DE3122947A1 (en) Heat exchanger
LU82197A1 (en) FLAT TUBE HEAT EXCHANGER
DE2950563C2 (en)
CH302665A (en) Elbow.
EP0062691A1 (en) Heat exchanger
DE1404943A1 (en) Combustion chamber cladding for water heaters and process for the production of such claddings
DE1197909B (en) Heat exchanger with pipe bundles connected to vertical wall pipes of a hot gas flue
DE2134278C3 (en) Absorption cooling unit
DE865188C (en) Heating body, consisting of pipes that are used in collecting pieces
DE975508C (en) Tube heat exchanger
DE970201C (en) Method for connecting the lamellar block pipes of a gas water heater with their connection pipes and gas water heater manufactured according to this method
DE3016781C2 (en) Heat exchanger with a heat exchange tube arranged in an air duct
CH171134A (en) Finned tube heat exchange device.
DE884406C (en) Air heater, consisting of a fan and a heat exchanger
DE627278C (en) Heat exchangers, especially flue gas preheaters, consisting of individual core tubes with fins pushed over
AT145734B (en) Finned tube flue gas preheater.
DE661556C (en) Suspension device for heat exchangers, especially superheaters
DE734100C (en) Process for the production of seamless, flat radiator finned tubes
AT229335B (en) Heat exchanger
AT63375B (en) Heating or cooling pipe.
CH146950A (en) Heat exchange device for liquids and gases.
DE684578C (en) Pipe or pipe piece with internal guide surfaces that give the flowing means a helical twisting motion to improve the heat exchange
AT123950B (en) Coiled tube boiler.
AT107908B (en) Heat exchange device.
DE2345243C3 (en) Steam heated heat exchanger