EP0345426A1 - Partition wall for a boiler - Google Patents
Partition wall for a boiler Download PDFInfo
- Publication number
- EP0345426A1 EP0345426A1 EP89105817A EP89105817A EP0345426A1 EP 0345426 A1 EP0345426 A1 EP 0345426A1 EP 89105817 A EP89105817 A EP 89105817A EP 89105817 A EP89105817 A EP 89105817A EP 0345426 A1 EP0345426 A1 EP 0345426A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- heat
- wall
- combustion chamber
- gusset
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
- F28F13/182—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing especially adapted for evaporator or condenser surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
- F24H1/263—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body with a dry-wall combustion chamber
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
Definitions
- the invention relates to a partition for heating boilers, namely the combustion chamber wall or the heating gas draft tube, which separates the water side from the gas-carrying side and on the gas side of which heat transfer area enlargements are arranged in the form of longitudinal ribs folded from a sheet metal blank and the sheet metal blank is connected in a heat-conducting manner to the combustion chamber wall, the rib folds in limit their foot area with the inner surface of the combustion chamber wall.
- Partition walls designed in this way are well known, so that no special printed evidence is required in this regard.
- This design of the partitions which are suitable both for the enclosure of the combustion chamber and for the formation of heating gas pipes, have proven themselves well, since in addition to their function as gas-side heat transfer area enlargements, they also provide corrosion protection with regard to condensate.
- the heat-conducting connection between the sheet metal blank folded into longitudinal ribs and the surrounding wall, which is generally a more or less large pipe, depending on whether the partition wall should enclose a combustion chamber or a hot gas flue, is achieved either by a press fit and / or partial welding .
- the widths of the cavity gussets at the base of the rib folds add up to a not inconsiderable width, which cannot be used directly for direct heat transfer, because the wall parts of the sheet metal blank delimiting the respective cavity gussets do not necessarily exist to be brought into heat-conducting contact with the wall on which the sheet metal blank sits.
- the invention is therefore based on the object of designing a partition of the type mentioned in such a way that the reduced heat transfer in the region of the cavity gusset can be intensified by simple means.
- the design of the partition wall according to the invention is of particular importance for the case in which the fins not only absorb heat from the heating gases flowing past, but also directly and directly from the ends the ribs of the thermally conductively connected walls, because only in this way can the large amount of heat introduced into the ribs actually be dissipated.
- the heat-conducting material can be designed in the form of filler profiles which in cross-section are at least approximately matched to the gusset cross-section. Since the rib folds are produced by machine, it can be assumed without further ado that the bending radii of the sheet metal blank at the foot of the rib folds are largely the same. In this respect, it would be readily possible to provide the filling profiles from the outset as rod material which corresponds in cross section to the gusset cross section. As has been shown, even roughly adapted filling profiles improve the heat transfer considerably.
- Relatively soft, metallic material can also be used for the filling profiles, which adapts to the gusset cross-section when sufficient deformation forces are applied. Profiles used in this way naturally also stiffen the entire partition construction, so that rib deformations in the base area of the folding ribs practically no longer occur due to excessive heat.
- the ribs are formed at the same time. Based on this, it is possible for the present case, instead of forming the ribs on the extruded profiles, to form small longitudinal ribs, the cross section of which corresponds to the cross section of the cavity gussets that are present on a sheet metal blank with unfolded ribs, as described, that is to say with such a configuration
- the heat-conducting material in the form of the gusset cross-section is formed at least approximately according to the extruded profile with longitudinal ribs formed on the extruded profile.
- the combustion chamber wall is formed into the cavity, the heat-conducting material forming it, which is molded onto the inner foot region of the rib folds, which can be easily accomplished with suitable deformation tools. It may well be considered to keep the thickness of the sheet metal blank greater than the thickness of the actual surrounding wall.
- Another possibility is to simply arrange the heat-conducting material in the form of a heat-conducting filling compound in the gusset cavities, it being possible, depending on the properties of such heat-conducting filling compounds, to close the open ends of the gusset with a panel.
- partition wall can be used both as a firebox enclosure and in the form of more or less small heating gas pipes, and only the special gusset design is of interest, a boiler that is equipped with such a partition wall is not particularly shown, especially since the most varied Boiler constructions that are suitable for this are well known.
- the water side of such a partition is designated W in FIG. 1 and the gas side G.
- the sheet metal blank 12, which is provided with the rib folds 8, as shown, is connected in a heat-conducting manner on the combustion chamber wall 9.
- a partition wall has a large number of such rib folds 8, there is a corresponding number of hollow gussets 1, the areas of which add up to a total area, which is not inconsiderable to an extent, which is not directly involved in the direct heat transfer. This becomes particularly critical if, as indicated in FIG. 2, a separating chamber wall 14, which delimits the individual heating gas flues 15 upwards, is also in direct heat-conducting contact with the rib folds 8 and, as mentioned above, results in an additional amount of heat in the rib folds 8 is initiated. For this reason, the cavity gusset 1 with a thermally conductive Ma filled out material that at least partially fills the cavity 2 and is at least partially thermally conductive in contact with the wall parts 3 delimiting the cavity 2.
- the heat-conducting material is in the form of filling profiles 4, which are at least approximately matched in cross section to the gusset cross section.
- the filling profile 4 is shown in its simplest embodiment, i.e. with an approximately adapted triangular cross section.
- the heat-conducting material in the form of the gusset cross-section is at least approximately corresponding to the extruded profile with shaped longitudinal ribs 6.
- extruded profiles 5 are then assembled by welding to form a cylindrical body which forms the combustion chamber wall.
- the sheet metal blank 12, which is provided with the rib folds 8 and is also cylindrical, is then pressed into this body using suitable auxiliary tools.
- the partition wall is designed such that in the area 7 of the cavity gusset 1 on the side of the combustion chamber wall each rib folds 8, the combustion chamber wall 9 into the cavity 2, forming the heat-conducting material, on the inside Base area of the rib folds 8 is formed integrally.
- This design of the partition is also carried out with auxiliary tools suitable for contact pressure.
- thermally conductive material in the form of a thermally conductive filler 10 into the cavities 2, the open ones, as mentioned above Ends of the cavity gusset 1, if this is required by the properties of the filling compound, can be closed with an aperture 11.
- FIG. 7 shows the partition wall rounded to a cylindrical tube train, as it is either used as a combustion chamber or reduced in diameter accordingly and inserted in a required number into a water-bearing boiler housing.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Thermal Insulation (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
Description
Die Erfindung betrifft eine Trennwand für Heizungskessel, nämlich Feuerraumwand oder Heizgaszugrohr, die die Wasserseite von der gasführenden Seite trennt und auf der gasseitig Wärmeübertragungsflächenvergrößerungen in Form von aus einem Blechzuschnitt gefalteten Längsrippen angeordnet sind und der Blechzuschnitt mit der Feuerraumwand wärmeleitend verbunden ist, wobei die Rippenfaltungen in ihrem Fußbereich mit der inneren Fläche der Feuerraumwand Hohlraumzwickel begrenzen.The invention relates to a partition for heating boilers, namely the combustion chamber wall or the heating gas draft tube, which separates the water side from the gas-carrying side and on the gas side of which heat transfer area enlargements are arranged in the form of longitudinal ribs folded from a sheet metal blank and the sheet metal blank is connected in a heat-conducting manner to the combustion chamber wall, the rib folds in limit their foot area with the inner surface of the combustion chamber wall.
Derart ausgebildete Trennwände sind hinlänglich bekannt, so daß es diesbezüglich keines besonderen druckschriftlichen Nachweises bedarf. Diese Ausgestaltung der Trennwände, die sowohl für die Umschließung des Feuerraumes aber auch für die Ausbildung von Heizgaszugrohren in Frage kommen, haben sich gut bewährt, da sie neben ihrer Funktion als gasseitige Wärmeübertragungsflächenvergrößerungen auch einen Korrosionsschutz hinsichtlich anfallenden Kondensats darstellen. Die wärmeleitende Verbindung zwischen dem zu Längsrippen aufgefalteten Blechzuschnitt und der umschließenden Wand, die in der Regel ein mehr oder weniger durchmessergroßes Rohr darstellt, je nachdem, ob die Trennwand einen Feuerraum umschließen soll oder einen Heizgaszug, wird entweder durch Preßsitz und/oder partielle Verschweißung erreicht.Partition walls designed in this way are well known, so that no special printed evidence is required in this regard. This design of the partitions, which are suitable both for the enclosure of the combustion chamber and for the formation of heating gas pipes, have proven themselves well, since in addition to their function as gas-side heat transfer area enlargements, they also provide corrosion protection with regard to condensate. The heat-conducting connection between the sheet metal blank folded into longitudinal ribs and the surrounding wall, which is generally a more or less large pipe, depending on whether the partition wall should enclose a combustion chamber or a hot gas flue, is achieved either by a press fit and / or partial welding .
Aus fertigungstechnischen Gründen ist es bei der Vorbereitung bzw. Auffaltung des Blechzuschnittes, will man den Fertigungsaufwand in vernünftigen Grenzen halten, praktisch nicht möglich, die Rippenfaltungen im Fußbereich derart scharfkantig anzulegen, daß keine Hohlraumzwickel entstehen, d.h., je großzügiger man mit der Faltung in diesem Bereich verfährt, desto größer werden die Hohlraumzwickel an der Basis der Rippenfaltungen. Da diese Rippenfaltungen untereinander relativ geringe Abstände haben, summieren sich die Breiten der Hohlraumzwickel an der Basis der Rippenfaltungen zu einer nicht unbeträchtlichen Breite auf, die nicht unmittelbar für einen direkten Wärmeübergang nutzbar gemacht werden kann, weil die die jeweiligen Hohlraumzwickel begrenzenden Wandungsteile des Blechzuschnittes zwangsläufig nicht mit der Wand in wärmeleitenden Kontakt zu bringen sind, auf der der Blechzuschnitt sitzt. Abgesehen davon, daß dies sowieso nicht im Sinne eines optimalen Wärmeüberganges liegt, ist diese konstruktive Gegebenheit der an sich vorteilhaften Rippenausbildung durch Faltung insbesondere dann nachteilig, wenn derartig ausgebildete Trennwände in Verbindung mit die eingentliche Brennkammer umschließenden Wänden benutzt werden, was in der Regel der Fall ist, und wobei aus bestimmten Gründen die Brennkammerwand mit den Enden der Rippen ebenfalls in wärmeleitendem Kontakt steht, um die von der Brennkammerwand aufgenommene Wärme unmittelbar in die Rippen einzuleiten. Hierbei machen sich die vorbeschriebenen und unvermeidbaren Hohlraumzwickel nachteilig bemerkbar, da deren Flächen am Wärmeübergang mehr oder weniger unbeteiligt sind, d.h. die von der Brennkammerwand zusätzlich eingeleitete Wärme kann ebenfalls nur über die Flächen abgeführt werden, die in unmittelbarem Wärmeleitkontakt stehen. Dies zeigt sich bspw. ganz deutlich in entsprechenden "Wärmemarkierungen" auf der Wasserseite der Trennwand.For technical reasons, when preparing or unfolding the sheet metal blank, if you want to keep the manufacturing effort within reasonable limits, it is practically impossible for the rib folds in the foot area to be so sharp-edged to ensure that no gussets are created, ie, the more generously you fold the area, the larger the gussets become at the base of the rib folds. Since these rib folds have relatively small distances from one another, the widths of the cavity gussets at the base of the rib folds add up to a not inconsiderable width, which cannot be used directly for direct heat transfer, because the wall parts of the sheet metal blank delimiting the respective cavity gussets do not necessarily exist to be brought into heat-conducting contact with the wall on which the sheet metal blank sits. Apart from the fact that this is not in the sense of an optimal heat transfer anyway, this constructive fact of the rib formation which is advantageous per se by folding is particularly disadvantageous when such partition walls are used in connection with the walls surrounding the actual combustion chamber, which is usually the case and, for certain reasons, the combustion chamber wall is also in heat-conducting contact with the ends of the ribs in order to introduce the heat absorbed by the combustion chamber wall directly into the ribs. Here, the previously described and unavoidable gusset cavities have a disadvantageous effect, since their surfaces are more or less uninvolved in the heat transfer, ie the heat additionally introduced from the combustion chamber wall can also be dissipated only via the surfaces which are in direct thermal contact. This is clearly shown, for example, in corresponding "heat markings" on the water side of the partition.
Der Erfindung liegt demgemäß die Aufgabe zugrunde, eine Trennwand der eingangs genannten Art dahingehend auszubilden, daß der reduzierte Wärmeübergang im Bereich der Hohlraumzwickel mit einfachen Mitteln intensiviert werden kann.The invention is therefore based on the object of designing a partition of the type mentioned in such a way that the reduced heat transfer in the region of the cavity gusset can be intensified by simple means.
Diese Aufgabe ist mit einer Trennwand der eingangs genannten Art nach der Erfindung durch die im Kennzeichen des Haupt anspruches angeführten Merkmale gelöst. Vorteilhafte Weiterbildungen und praktische Ausführungsformen ergeben sich nach den Unteransprüchen.This object is with a partition of the type mentioned in the invention by the in the hallmark of the main Claimed features resolved. Advantageous further developments and practical embodiments result from the subclaims.
Abgesehen davon, daß damit die verfügbare Wärmeübertragungsfläche bzw. der Wärmedurchgang insgesamt optimiert ist, hat die erfindungsgemäße Ausbildung der Trennwand besondere Bedeutung für den Fall, bei dem die Rippen Wärme nicht nur aus den vorbeiströmenden Heizgasen aufnehmen, sondern auch direkt und unmittelbar aus mit den Enden der Rippen wärmeleitend verbundenen Wandungen, denn nur auf diese Weise kann die in die Rippen eingeleitete große Wärmemenge auch tatsächlich abgeführt werden.In addition to the fact that the available heat transfer surface or heat transfer is optimized as a whole, the design of the partition wall according to the invention is of particular importance for the case in which the fins not only absorb heat from the heating gases flowing past, but also directly and directly from the ends the ribs of the thermally conductively connected walls, because only in this way can the large amount of heat introduced into the ribs actually be dissipated.
Für die praktische Verwirklichung der neuartigen Trennwand stehen verschiedene Ausführungsformen zur Verfügung. So kann das wärmeleitende Material in Form von Füllprofilen ausgebildet sein, die im Querschnitt zumindest angenähert dem Zwickelquerschnitt angepaßt sind. Da die Rippenfaltungen maschinell hergestellt werden, ist ohne weiteres davon auszugehen, daß die Biegeradien des Blechzuschnittes am Fuße der Rippenfaltungen weitestgehend gleich sind. Insofern wäre es ohne weiteres möglich, die Füllprofile von vornherein als Stangenmaterial vorzusehen, das im Querschnitt dem Zwickelquerschnitt entspricht. Wie sich gezeigt hat, verbessern auch schon grob angepaßte Füllprofile den Wärmeübergang ganz wesentlich. Es kann für die Füllprofile auch relativ weiches, metallisches Material verwendet werden, das sich bei Anwendung ausreichender Verformungskräfte an den Zwickelquerschnitt anpaßt. Derartig eingesetzte Profile versteifen natürlich nebenbei auch die gesamte Trennwandkonstruktion, so daß Rippenverformungen im Fußbereich der Faltrippen aufgrund zu starker Wärmeeinwirkung praktisch nicht mehr auftreten.Various embodiments are available for the practical implementation of the new partition. For example, the heat-conducting material can be designed in the form of filler profiles which in cross-section are at least approximately matched to the gusset cross-section. Since the rib folds are produced by machine, it can be assumed without further ado that the bending radii of the sheet metal blank at the foot of the rib folds are largely the same. In this respect, it would be readily possible to provide the filling profiles from the outset as rod material which corresponds in cross section to the gusset cross section. As has been shown, even roughly adapted filling profiles improve the heat transfer considerably. Relatively soft, metallic material can also be used for the filling profiles, which adapts to the gusset cross-section when sufficient deformation forces are applied. Profiles used in this way naturally also stiffen the entire partition construction, so that rib deformations in the base area of the folding ribs practically no longer occur due to excessive heat.
Insbesondere für Feuerraumumgebungswände ist es bekannt, diese Wände aus mehr oder weniger großen Strangpreßprofilen zusam menzusetzen, bei deren Strangverpressung die Rippen sogleich mit ausgeformt werden. Davon ausgehend, ist es für den vorliegenden Fall möglich, statt der Rippen an den Strangpreßprofilen kleine Längsrippen mit auszuformen, deren Querschnitt dem Querschnitt der Hohlraumzwickel entspricht, die an einem Blechzuschnitt mit aufgefalteten Rippen, wie beschrieben, vorliegen, d.h., bei einer derartigen Ausbildung der Feuerraumwand ist das wärmeleitende Material in Form von dem Zwickelquerschnitt zumindest angenähert entsprechend am Strangpreßprofil mitausgeformten Längsrippen ausgebildet.In particular for combustion chamber surrounding walls, it is known to assemble these walls from more or less large extruded profiles with the extrusions, the ribs are formed at the same time. Based on this, it is possible for the present case, instead of forming the ribs on the extruded profiles, to form small longitudinal ribs, the cross section of which corresponds to the cross section of the cavity gussets that are present on a sheet metal blank with unfolded ribs, as described, that is to say with such a configuration The heat-conducting material in the form of the gusset cross-section is formed at least approximately according to the extruded profile with longitudinal ribs formed on the extruded profile.
Eine weitere vorteilhafte Ausführungsmöglichkeit besteht darin, daß im Bereich der feuerraumwandseitigen Hohlraumzwickel jeder Rippenfaltung die Feuerraumwand in den Hohlraum hinein, das wärmeleitende Material bildende, an den inneren Fußbereich der Rippenfaltungen angeformt ausgebildet ist, was mit geeigneten Verformungswerkzeugen problemlos bewerkstelligt werden kann. Dabei kann durchaus in Betracht gezogen werden, ggf. die Stärke des Blechzuschnittes größer zu halten als die Stärke der eigentlichen Umschließungswand.Another advantageous embodiment is that in the region of the cavity gusset-side gusset of each rib fold, the combustion chamber wall is formed into the cavity, the heat-conducting material forming it, which is molded onto the inner foot region of the rib folds, which can be easily accomplished with suitable deformation tools. It may well be considered to keep the thickness of the sheet metal blank greater than the thickness of the actual surrounding wall.
Eine weitere Möglichkeit besteht darin, das wärmeleitende Material einfach in Form einer wärmeleitenden Füllmasse in den Zwickelhohlräumen anzuordnen, wobei je nach den Eigenschaften solcher wärmeleitenden Füllmassen vorgesehen werden kann, die offenen Enden der Zwickel mit einer Blende zu verschließen.Another possibility is to simply arrange the heat-conducting material in the form of a heat-conducting filling compound in the gusset cavities, it being possible, depending on the properties of such heat-conducting filling compounds, to close the open ends of the gusset with a panel.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.Embodiments of the invention are shown in the drawing and are described in more detail below.
Es zeigen schematisch:
- Fig. 1 im Schnitt und perspektivisch einen Abschnitt der Trennwand mit noch nicht ausgefüllten Hohlraumzwickeln;
- Fig. 2 - 6 verschiedene Ausführungsformen der Trennwand und
- Fig. 7 einen Schnitt durch die Trennwand in zylindrisch gerundeter Form für den Einbau als Feuerraum in ein Heizkesselgehäuse.
- Figure 1 in section and in perspective a section of the partition with not yet filled cavity gussets.
- Fig. 2-6 different embodiments of the partition and
- Fig. 7 shows a section through the partition in a cylindrical rounded shape for installation as a combustion chamber in a boiler housing.
Da die Trennwand sowohl als Feuerraumumschließung als auch in Form von mehr oder weniger durchmesserkleinen Heizgaszugrohren verwendet werden kann, und hier nur die besondere Zwickelausbildung von Interesse ist, ist ein Heizkessel, der mit einer solchen Trennwand ausgestattet wird, nicht besonders dargestellt, zumal diesbezüglich die unterschiedlichsten Heizkesselkonstruktionen, die dafür infragekommen, hinlänglich bekannt sind. Die Wasserseite einer derartigen Trennwand ist in Fig. 1 mit W und die Gasseite mit G bezeichnet. Der Blechzuschnitt 12, der mit den Rippenfaltungen 8, wie dargestellt, versehen ist, sitzt dabei wärmeleitend verbunden auf der Feuerraumwand 9. Bei der Herstellung der Rippenfaltungen 8 ist es dabei nicht möglich, die Ausbildungen von Hohlraumzwickeln 1 im Fußbereich 13 zu vermeiden, was zwangsläufig damit verbunden ist, daß die Wandungsteile 3, wie in Fig. 1 angedeutet, nicht bzw. nur in sehr beschränktem Maße an der Wärmeübertragung teilnehmen können, die im wesentlichen nur über die senkrecht schraffierten Bereiche erfolgen kann. Da in der Regel eine Trennwand eine Vielzahl solcher Rippenfaltungen 8 aufweist, liegt eine entsprechende Anzahl von Hohlraumzwickeln 1 vor, deren Flächen sich in nicht unbeträchtlichem Umfange zu einer Gesamtfläche aufaddieren, die am direkten Wärmeübergang nicht unmittelbar beteiligt ist. Besonders kritisch wird dies, wenn, wie in Fig. 2 angedeutet, eine Trennkammerwand 14, die die einzelnen Heizgaszüge 15 nach oben begrenzt, ebenfalls in direktem wärmeleitenden Kontakt mit den Rippenfaltungen 8 steht und durch die, wie vorerwähnt, eine zusätzliche Wärmemenge in die Rippenfaltungen 8 eingeleitet wird. Aus diesem Grunde sind die Hohlraumzwickel 1 mit einem wärmeleitenden Ma terial ausgefüllt, das den Hohlraum 2 mindestens teilsweise ausfüllt und mindestens teilweise mit den den Hohlraum 2 begrenzenden Wandungsteilen 3 wärmeleitend in Kontakt stehend ausgebildet ist.Since the partition wall can be used both as a firebox enclosure and in the form of more or less small heating gas pipes, and only the special gusset design is of interest, a boiler that is equipped with such a partition wall is not particularly shown, especially since the most varied Boiler constructions that are suitable for this are well known. The water side of such a partition is designated W in FIG. 1 and the gas side G. The sheet metal blank 12, which is provided with the
Gemäß Fig. 2 ist das wärmeleitende Material in Form von Füllprofilen 4 ausgebildet, die im Querschnitt zumindest angenähert dem Zwickelquerschnitt angepaßt sind. In Fig. 2 ist dabei das Füllprofil 4 in seiner einfachsten Ausführungsform dargestellt, d.h., mit einem in etwa angepaßten Dreiecksquerschnitt.2, the heat-conducting material is in the form of filling profiles 4, which are at least approximately matched in cross section to the gusset cross section. In Fig. 2 the filling profile 4 is shown in its simplest embodiment, i.e. with an approximately adapted triangular cross section.
Beim Ausführungsbeispiel gemäß Fig. 3, bei dem die Feuerraumwand aus Strangpreßprofilen 5 gebildet ist, ist das wärmeleitende Material in Form von dem Zwickelquerschnitt zumindest angenähert entsprechenden, am Strangpreßprofil mit ausgeformten Längsrippen 6 ausgebildet. Mehrere solche Strangpreßprofile 5 werden dann durch Verschweißung zu einem zylindrischen Körper zusammengesetzt, der die Feuerraumwand bildet. In diesen Körper wird dann der mit den Rippenfaltungen 8 versehene und ebenfalls zylindrische Blechzuschnitt 12 mit geeigneten Hilfswerkzeugen eingepreßt.In the embodiment according to FIG. 3, in which the combustion chamber wall is formed from
Beim Ausführungsbeispiel gemäß Fig. 4 ist ebenfalls kein zusätzliches wärmeleitendes Material erforderlich, denn hierbei ist die Trennwand derart ausgebildet, daß im Bereich 7 der feuerraumwandseitigen Hohlraumzwickel 1 jede Rippenfaltungen 8 die Feuerraumwand 9 in den Hohlraum 2 hinein, das wärmeleitende Material bildend, an dem inneren Fußbereich der Rippenfaltungen 8 angeformt ausgebildet ist. Auch diese Ausbildung der Trennwand erfolgt mit anpreßdruckgeeigneten Hilfswerkzeugen.In the exemplary embodiment according to FIG. 4, no additional heat-conducting material is required either, because here the partition wall is designed such that in the area 7 of the cavity gusset 1 on the side of the combustion chamber wall each
Gemäß Fig. 5, 6 ist es aber auch möglich, das wärmeleitende Material in Form einer wärmeleitenden Füllmasse 10 in die Hohlräume 2 einzubringen, wobei, wie vorerwähnt, die offenen Enden der Hohlraumzwickel 1, falls dies die Füllmasse aufgrund ihrer Eigenschaften erfordert, mit einer Blende 11 verschlossen sein können.5, 6, it is also possible to introduce the thermally conductive material in the form of a thermally
Fig. 7 stellt der Vollständigkeit halber die zu einem zylindrischen Rohrzug gerundete Trennwand dar, wie sie entweder als Feuerraum oder entsprechend durchmesserreduziert und in erforderlicher Anzahl in ein wasserführendes Kessgelgehäuse eingesetzt wird.For the sake of completeness, FIG. 7 shows the partition wall rounded to a cylindrical tube train, as it is either used as a combustion chamber or reduced in diameter accordingly and inserted in a required number into a water-bearing boiler housing.
Claims (6)
dadurch gekennzeichnet,
daß die Hohlraumzwickel (1) mit einem wärmeleitenden Material ausgefüllt sind, das den Hohlraum (2) mindestens teilsweise ausfüllt und mindestens teilsweise mit den den Hohlraum (2) begrenzenden Wandungsteilen (3) wärmeleitend in Kontakt stehend ausgebildet ist.1. Partition wall for heating boilers, namely the combustion chamber wall or the heating gas draft tube, which separates the water side from the gas-carrying side and on the gas side of which heat transfer area enlargements are arranged in the form of longitudinal ribs folded from a sheet metal blank, and the sheet metal blank is thermally conductively connected to the combustion chamber wall, the rib folds on their Limit areas of the foot with the inner surface of the combustion chamber wall
characterized,
that the cavity gussets (1) are filled with a thermally conductive material which at least partially fills the cavity (2) and is at least partially thermally conductive in contact with the wall parts (3) delimiting the cavity (2).
dadurch gekennzeichnet,
daß das wärmeleitende Material in Form von Füllprofilen (4) ausgebildet ist, die im Querschnitt zumindest angenähert dem Zwickelquerschnitt angepaßt sind.2. partition according to claim 1,
characterized,
that the heat-conducting material is in the form of filling profiles (4) which are at least approximately matched in cross section to the gusset cross section.
dadurch gekennzeichnet,
daß bei Ausbildung der Feuerraumwand aus Strangpreßprofilen (5) das wärmeleitende Material in Form von dem Zwickelquerschnitt zumindest angenähert entsprechenden, am Strangpreßprofil mit angeformten Längsrippen (6) ausgebildet ist.3. partition according to claim 1,
characterized,
that when the combustion chamber wall is formed from extruded profiles (5), the heat-conducting material in the form of the gusset cross-section is at least approximately corresponding to the extruded profile with integrally formed longitudinal ribs (6).
dadurch gekennzeichnet,
daß im Bereich (7) der feuerraumwandseitigen Hohlraumzwickel (1) jeder Rippenfaltung (8) die Feuerraumwand in den Hohlraum (2) hinein, das wärmeleitende Material bildend, an den inneren Fußbereich der Rippenfaltungen (8) angeformt ausgebildet ist.4. partition according to claim 1,
characterized,
that in the region (7) of the cavity-side gusset (1) of each rib fold (8), the furnace wall into the cavity (2), forming the heat-conducting material, is formed integrally with the inner foot region of the rib folds (8).
dadurch gekennzeichnet,
daß das wärmeleitende Material in Form einer wärmeleitenden Füllmasse (10) im Hohlraum (2) angeordnet ist.5. partition according to claim 1,
characterized,
that the thermally conductive material is arranged in the form of a thermally conductive filler (10) in the cavity (2).
dadurch gekennzeichnet,
daß die offenen Enden der Hohlraumzwickel (1) mit einer Blende (11) verschlossen sind.6. partition according to claim 5,
characterized,
that the open ends of the cavity gusset (1) are closed with an aperture (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89105817T ATE80938T1 (en) | 1988-06-04 | 1989-04-03 | PARTITION FOR BOILER. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3819071 | 1988-06-04 | ||
| DE3819071A DE3819071C1 (en) | 1988-06-04 | 1988-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0345426A1 true EP0345426A1 (en) | 1989-12-13 |
| EP0345426B1 EP0345426B1 (en) | 1992-09-23 |
Family
ID=6355873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89105817A Expired - Lifetime EP0345426B1 (en) | 1988-06-04 | 1989-04-03 | Partition wall for a boiler |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0345426B1 (en) |
| AT (1) | ATE80938T1 (en) |
| DE (1) | DE3819071C1 (en) |
| ES (1) | ES2035403T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9311128U1 (en) * | 1993-07-28 | 1993-09-02 | Viesmann Hans Dr | boiler |
| DE9309771U1 (en) * | 1993-07-01 | 1993-08-26 | Viessmann Werke Kg | Hot gas flue |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE458680A (en) * | ||||
| DE8531100U1 (en) * | 1985-11-04 | 1987-10-29 | Viessmann, Hans, Dr.H.C., 3559 Battenberg, De |
-
1988
- 1988-06-04 DE DE3819071A patent/DE3819071C1/de not_active Expired
-
1989
- 1989-04-03 AT AT89105817T patent/ATE80938T1/en not_active IP Right Cessation
- 1989-04-03 EP EP89105817A patent/EP0345426B1/en not_active Expired - Lifetime
- 1989-04-03 ES ES198989105817T patent/ES2035403T3/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE458680A (en) * | ||||
| DE8531100U1 (en) * | 1985-11-04 | 1987-10-29 | Viessmann, Hans, Dr.H.C., 3559 Battenberg, De |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3819071C1 (en) | 1989-07-13 |
| ATE80938T1 (en) | 1992-10-15 |
| ES2035403T3 (en) | 1993-04-16 |
| EP0345426B1 (en) | 1992-09-23 |
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