EP0387584A2 - Heating gas draft tube - Google Patents

Heating gas draft tube Download PDF

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Publication number
EP0387584A2
EP0387584A2 EP90103715A EP90103715A EP0387584A2 EP 0387584 A2 EP0387584 A2 EP 0387584A2 EP 90103715 A EP90103715 A EP 90103715A EP 90103715 A EP90103715 A EP 90103715A EP 0387584 A2 EP0387584 A2 EP 0387584A2
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EP
European Patent Office
Prior art keywords
tube
tubes
heating gas
sleeve
gas draft
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Granted
Application number
EP90103715A
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German (de)
French (fr)
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EP0387584A3 (en
EP0387584B1 (en
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Hans Dr. Viessmann
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Priority to AT90103715T priority Critical patent/ATE83062T1/en
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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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0036—Dispositions against condensation of combustion products
    • 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

Definitions

  • the invention relates to a Walkergaszugrohr according to the preamble of the main claim.
  • Hot gas flue pipes of the type mentioned are generally known and are used in a wide variety of boiler designs, but their designs differ fundamentally from boilers for smaller output ranges, which are known to contain all areas carrying heating and flue gas in only one room (e.g. relatively large cylinder). So combustion chamber, deflection chamber, heating gas flues and flue gas collection chamber. In contrast, in the boilers of interest, the secondary heating surfaces or hot gas flues are formed by relatively small-diameter pipes (of the order of about 30 to 80 mm in diameter) which pass through the water-carrying part of the boiler housing essentially horizontally above and / or next to the actual combustion chamber.
  • Heating gas draft tubes formed from an inner and outer tube are also known from DE-A-33 09 930.
  • the pipes are at a relatively large distance from each other, i.e. they enclose an annular gap, which can lead to buckling, particularly of the inner pipe, when exposed to heat.
  • spacer elements between the pipes, while according to DE-A-34 40 006, powdery material with a given thermal conductivity is filled between the double pipes after their assembly. In both cases, however, these measures extend over the entire length of the heating gas pipes.
  • the invention has for its object to improve a Schusteryakrohr of the type mentioned with simple means to the effect that condensation can be countered in the critical area.
  • This inventive measure of incorporating an additional sleeve between the inner and outer tube is as simple as it is effective for preventing the accumulation of condensate in this critical area.
  • very thin sheet metal can advantageously be used for the sleeve and on on the other hand, this creates an additional gap which, despite the pipes being pressed together in partial areas, constitutes an additional barrier to heat transfer insofar as areas of the inner pipe covered with it cannot cool down as quickly as if there was only one gap.
  • What is essential for the whole is less the additional integration of a thin sleeve, but rather the creation of an additional gap, which, however, can only be imagined as a very fine structural break between adjacent layers of the tubes and the sleeve.
  • the sleeve only with a wall thickness of 0.5 to 1.0 mm, preferably 0.75 mm, with this dimension ultimately only the practical handling of the sleeve being decisive, that is, theoretically, one could also provide an even thinner metal foil for the sleeve, but this would be difficult to handle.
  • the provision according to the invention of introducing an additional sleeve in the exhaust area of the heating gas draft tube is particularly advantageous in that the fold areas on the fin feet are involved in the heat transfer, i.e. for subclaim 3, protection is only provided within the scope of the present invention claimed.
  • the heating gas draft tube according to the invention is explained in more detail below with the aid of the drawing of an exemplary embodiment.
  • Fig. 1 only the area 3 of the heating gas draft tube I of interest here is shown, which is of course considerably longer as a whole.
  • the inner tube consists of a sheet metal blank that is folded into longitudinal ribs 6 and rounded into a tube.
  • the outer tube 1 is applied in a heat-conducting manner in partial areas 8 by all-round pressing.
  • there may be a filler 7 which causes the heating gases flowing in the direction of arrow A to flow through the channels 9 delimited by the longitudinal ribs 6.
  • a metallic sleeve 4 is pressed in a heat-conducting manner to both tubes.
  • the wall thickness W of the sleeve 4 can be dimensioned extremely thin, but this is advantageously dimensioned with a wall thickness of approximately 0.75 mm in order not to impair the handling of the sleeve 4.
  • the insertion of the sleeve 4 is absolutely no problem, because it can be inserted between the two pipes 1, 2 before the pressing.
  • This configuration of a heating gas draft tube with only two shells and the additional arrangement of a comparatively thin-walled additional sleeve can of course also be used for double-skin heating gas draft tubes if the outer tube is not, as shown in FIG. 1, pressed in parts.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Resistance Heating (AREA)

Abstract

The heating gas draft tube is intended in particular for low- temperature heating boilers, in which a number of heating gas draft tubes are arranged running from a combustion or inflow or deflection chamber, extending through the water-bearing inner space of the boiler housing essentially horizontally, to a smoke gas collecting chamber. Each heating gas draft tube (I) is in this connection formed from two tubes (1, 2) arranged inside one another, the outer tube (1) at least in the takeoff-side half pressing tightly in a heat-conducting manner in part regions against the inner tube and the inner tube (2) being provided with longitudinal ribs (6). According to the invention, the heating gas draft tube (I) is designed in such a manner that, in the takeoff-side region (3) between the outer tube (1) and the inner tube (2), a metal sleeve (4) is arranged pressed into both tubes (1, 2) in a heat-conducting manner, the wall thickness (W) of the sleeve (4) being designed to be thinner than that of the two tubes (1, 2). <IMAGE>

Description

Die Erfindung betrifft ein Heizgaszugrohr gemäß Oberbegriff des Hauptanspruches.The invention relates to a Heizgaszugrohr according to the preamble of the main claim.

Heizgaszugrohre der genannten Art sind allgemein bekannt und werden in den unterschiedlichsten Kesselkonstruktionen be­nutzt, die sich jedoch in ihren Konstruktionen grundsätzlich von Heizkesseln für kleinere Leistungsbereiche unterscheiden, welche bekanntlich in nur einem Raum (bspw. relativ durchmes­sergroßer Zylinder) sämtliche heiz- und rauchgasführenden Be­reiche enthalten, also Brennkammer, Umlenkkammer, Heizgaszüge und Rauchgassammelkammer. Demgegenüber werden bei den hier interessierenden Kesseln die Nachschaltheizflächen bzw. Heiz­gaszüge von relativ durchmesserkleinen Rohren (Größenordnung von etwa 30 bis 80 mm im Durchmesser) gebildet, die über und/oder neben dem eigentlichen Brennraum den wasserführenden Teil des Heizkesselgehäuses im wesentlichen horizontal durch­greifen.Hot gas flue pipes of the type mentioned are generally known and are used in a wide variety of boiler designs, but their designs differ fundamentally from boilers for smaller output ranges, which are known to contain all areas carrying heating and flue gas in only one room (e.g. relatively large cylinder). So combustion chamber, deflection chamber, heating gas flues and flue gas collection chamber. In contrast, in the boilers of interest, the secondary heating surfaces or hot gas flues are formed by relatively small-diameter pipes (of the order of about 30 to 80 mm in diameter) which pass through the water-carrying part of the boiler housing essentially horizontally above and / or next to the actual combustion chamber.

Bemühungen, Heizkessel auch im sog. Niedertemperatrurbereich betreiben zu können, sind inzwischen nicht nur auf Heizkessel für kleinere Leistungsbereiche beschränkt geblieben, also solche Kessel, die bspw. für Einfamilienhäuser ausreichen, sondern sind inzwischen auch auf Kessel für größere Lei­stungsbereiche ausgedehnt worden. Um bei möglichst geringer Heizgaszugrohranzahl die Wärmeübertragungsfläche trotzdem entsprechend groß halten zu können, ist es auch schon be­kannt, derartige Rohre innen mit Längsrippen zu versehen, was zweckmäßig auf einfache Weise dadurch bewerkstelligt wird, daß man einen Blechzuschnitt zu Längsrippen faltet und diesen gefalteten Zuschnitt zu einem Rohr rundet, in das äußere Rohr einschiebt und dieses in Teilbereiche an das innere anpreßt (siehe DE-U-85 31 100.6). Diese verpreßten Bereiche sind ei­nerseits dem Wärmeübergang besonders förderlich, andererseits kühlen diese aber auch relativ schnell ab, so daß es dort zu Kondensatniederschlägen kommen kann, die es aber wegen der damit verbundenen Korrosionsgefahr zu verhindern gilt.Efforts to operate boilers in the so-called low-temperature range have meanwhile not only been limited to boilers for smaller output ranges, i.e. those boilers that are sufficient for single-family homes, for example, but have now also been extended to boilers for larger output ranges. In order to be able to keep the heat transfer surface large enough with the smallest possible number of heating gas draft tubes, it is also known to provide such tubes on the inside with longitudinal ribs, which is expediently accomplished in a simple manner by folding a sheet metal blank into longitudinal ribs and rounding this folded blank into a tube, inserting it into the outer tube and pressing it against the inner tube in partial areas (see DE-U-85 31 100.6). On the one hand, these pressed areas are particularly conducive to heat transfer, but on the other hand, they also cool down relatively quickly, so that condensation can occur there, but this must be prevented due to the associated risk of corrosion.

Aus einem Innen- und Außenrohr gebildete Heizgaszugrohre sind auch nach der DE-A-33 09 930 bekannt. Die Rohre haben dabei einen relativ großen Abstand zueinander, d.h., sie schließen einen Ringspalt ein, der bei Wärmebelastung zum Ausknicken insbesondere des Innenrohres führen kann. Um dieser Gefahr zu begegnen, hat man deshalb vorgeschlagen, zwischen den Rohren Distanzelemente anzuordnen, während nach der DE-A-34 40 006 zwischen die Doppelrohre nach deren Zusammenfügung pulverför­miges Material mit gegebener Wärmeleitfähigkeit eingefüllt wird. In beiden Fällen erstrecken sich diese Maßnahmen aller­dings über die ganze Länge der Heizgaszugrohre.Heating gas draft tubes formed from an inner and outer tube are also known from DE-A-33 09 930. The pipes are at a relatively large distance from each other, i.e. they enclose an annular gap, which can lead to buckling, particularly of the inner pipe, when exposed to heat. In order to counter this danger, it has therefore been proposed to arrange spacer elements between the pipes, while according to DE-A-34 40 006, powdery material with a given thermal conductivity is filled between the double pipes after their assembly. In both cases, however, these measures extend over the entire length of the heating gas pipes.

Der Erfindung liegt die Aufgabe zugrunde, ein Heizgaszugrohr der eingangs genannten Art mit einfachen Mitteln dahingehend zu verbessern, daß einem Kondensatniederschlag im dafür kri­tischen Bereich begegnet werden kann.The invention has for its object to improve a Heizgaszugrohr of the type mentioned with simple means to the effect that condensation can be countered in the critical area.

Diese Aufgabe ist mit einem Heizgaszugrohr der eingangs ge­nannten Art nach der Erfindung durch die im Kennzeichen des Hauptanspruches angeführten Merkmale gelöst. Vorteilhafte Weiterbildungen ergeben sich nach den Unteransprüchen.This object is achieved with a Heizgaszugrohr of the type mentioned according to the invention by the features stated in the characterizing part of the main claim. Advantageous further developments result from the subclaims.

Diese erfindungsgemäße Maßnahme der Einbindung einer zusätz­lichen Hülse zwischen dem inneren und äußeren Rohr ist ebenso einfach wie für die Verhinderung eines Kondensatanfalles in diesem kritischen Bereich wirksam. Einerseits kann für die Hülse vorteilhaft sehr dünnes Blech verwendet werden und an­ dererseits entsteht dadurch ein zusätzlicher Spalt, der trotz Verpressung der Rohre in Teilbereichen zueinander für den Wärmeübergang insofern eine zusätzliche Barriere darstellt, als damit abgedeckte Bereiche des Innenrohres nicht mehr so schnell auskühlen können, als wenn nur ein Spalt vorläge. We­sentlich beim Ganzen ist also weniger die zusätzliche Einbin­dung einer dünnen Hülse, sondern die Gewinnung eines zusätz­lichen Spaltes, den man sich allerdings lediglich als sehr feine Strukturunterbrechung zwischen benachbarte Lagen der Rohre und der Hülse vorzustellen hat. Insofern genügt es, die Hülse lediglich mit einer Wandstärke von 0,5 bis 1,0 mm, vor­zugsweise mit 0,75 mm zu bemessen, wobei für diese Bemessung letztlich nur noch die zweckmäßige Handhabbarkeit der Hülse maßgebend ist, d.h., theoretisch könnte man auch für die Hülse eine noch wesentlich dünnere Metallfolie vorsehen, was jedoch mit einer schwierigen Handhabung verbunden wäre. Für die Ausbildung des Innenrohres mittels Längsrippen ist die erfindungsgemäße Maßgabe der Einbringung einer zusätzlichen Hülse im Abzugsbereich des Heizgaszugrohres insofern beson­ders vorteilhaft, als hierbei insbesondere die Faltbereiche an den Rippenfüßen am Wärmeübergang beteiligt sind, d.h. für den Unteranspruch 3 wird Schutz nur im Rahmen der vorliegen­den Erfindung beansprucht.This inventive measure of incorporating an additional sleeve between the inner and outer tube is as simple as it is effective for preventing the accumulation of condensate in this critical area. On the one hand, very thin sheet metal can advantageously be used for the sleeve and on on the other hand, this creates an additional gap which, despite the pipes being pressed together in partial areas, constitutes an additional barrier to heat transfer insofar as areas of the inner pipe covered with it cannot cool down as quickly as if there was only one gap. What is essential for the whole is less the additional integration of a thin sleeve, but rather the creation of an additional gap, which, however, can only be imagined as a very fine structural break between adjacent layers of the tubes and the sleeve. In this respect, it is sufficient to dimension the sleeve only with a wall thickness of 0.5 to 1.0 mm, preferably 0.75 mm, with this dimension ultimately only the practical handling of the sleeve being decisive, that is, theoretically, one could also provide an even thinner metal foil for the sleeve, but this would be difficult to handle. For the formation of the inner tube by means of longitudinal ribs, the provision according to the invention of introducing an additional sleeve in the exhaust area of the heating gas draft tube is particularly advantageous in that the fold areas on the fin feet are involved in the heat transfer, i.e. for subclaim 3, protection is only provided within the scope of the present invention claimed.

Das erfindungsgemäße Heizgaszugrohr wird nachfolgend anhand der zeichnerischen Darstellung einer Ausführungsbeispiels nä­her erläutert.The heating gas draft tube according to the invention is explained in more detail below with the aid of the drawing of an exemplary embodiment.

Es zeigt

  • Fig. 1 einen Längsschnitt durch das Heizgaszugrohr;
  • Fig. 2 einen Querschnitt durch das Heizgaszugrohr und
  • Fig. 3 eine Abwicklung des Zuschnittes für die Hülse in be­sonderer Ausführungsform.
It shows
  • 1 shows a longitudinal section through the Heizgaszugrohr.
  • Fig. 2 shows a cross section through the Heizgaszugrohr and
  • Fig. 3 is a development of the blank for the sleeve in a special embodiment.

In Fig. 1 ist nur der hier interessierende abzugsseitige Be­reich 3 des Heizgaszugrohres I dargestellt, das im Ganzen na­türlich wesentlich länger ist. Dargestellt ist ferner eine Ausführungsform des Heizgaszugrohres, bei dem das innere Rohr, wie aus Fig. 2 ersichtlich, aus einem Blechzuschnitt besteht, der zu Längsrippen 6 gefaltet und zu einem Rohr ge­rundet ist. Wie ferner aus Fig. 1 ersichtlich, ist das äußere Rohr 1 in Teilbereichen 8 durch Rundumverpressungen wärmelei­tend dicht angelegt. Im Freiraum zwischen den Längsrippen 6 kann sich, wie ebenfalls aus Fig. 2 ersichtlich, ein Füllkör­per 7 befinden, der bewirkt, daß die in Pfeilrichtung A durchströmenden Heizgase die von den Längrippen 6 begrenzten kanäle 9 durchströmen.In Fig. 1 only the area 3 of the heating gas draft tube I of interest here is shown, which is of course considerably longer as a whole. Also shown is an embodiment of the heating gas draft tube, in which, as can be seen in FIG. 2, the inner tube consists of a sheet metal blank that is folded into longitudinal ribs 6 and rounded into a tube. As can also be seen from FIG. 1, the outer tube 1 is applied in a heat-conducting manner in partial areas 8 by all-round pressing. In the free space between the longitudinal ribs 6, as can also be seen from FIG. 2, there may be a filler 7 which causes the heating gases flowing in the direction of arrow A to flow through the channels 9 delimited by the longitudinal ribs 6.

Wesentlich ist nun, daß nur im abzugsseitigen Bereich 3 zwi­schen dem äußeren Rohr 1 und dem inneren Rohr 2 eine metalli­sche Hülse 4 wärmeleitend zu beiden Rohren eingepreßt ange­ordnet ist. Wie vorerwähnt, kann die Wandstärke W der Hülse 4 extrem dünn bemessen werden, vorteilhaft wird diese aber mit einer Wandstärke von ca. 0,75 mm bemessen, um die Handhabbar­keit der Hülse 4 nicht zu beeinträchtigen. Die Einbringung der Hülse 4 ist absolut problemlos,weil diese vor dem Ver­pressen der beiden Rohre 1, 2 zwischen diese eingeschoben werden kann.It is essential that only in the area 3 on the fume cupboard between the outer tube 1 and the inner tube 2, a metallic sleeve 4 is pressed in a heat-conducting manner to both tubes. As mentioned above, the wall thickness W of the sleeve 4 can be dimensioned extremely thin, but this is advantageously dimensioned with a wall thickness of approximately 0.75 mm in order not to impair the handling of the sleeve 4. The insertion of the sleeve 4 is absolutely no problem, because it can be inserted between the two pipes 1, 2 before the pressing.

Da derartige Heizgaszugrohre I im eingebauten Zustand im was­serführenden Innenraum eines Heizkessels von unten in Pfeil­richtung B angeströmt werden, ist die Hülse 4 bzw. deren Blechzuschnitt 4′ vorteilhaft im Sinne der Fig. 3 zugeschnit­ten und dann zur Hülse gerundet. Dadurch ergibt sich eine Ausbildung des Heizgaszugrohres derart, daß die Hülse 4 zur Zuströmseite Z des Rohres I hin mit einem Schräganschnitt 5 versehen und mit ihrer längsten Mantellinie (beim Ausfüh­ rungsbeispiel ist das ein ganzer Mittelstreifen MS) "unten", d.h., zur Anströmseite B hin angeordnet ist. Diese Ausbildung eines an sich nur zweischaligen Heizgaszugrohres mit der zu­sätzlichen Anordnung einer vergleichsweise dünnwandigen zu­sätzlichen Hülse kann selbstverständlich auch für zweischa­lige Heizgaszugrohre zur anwendung gebracht werden, wenn das äußere Rohr nicht, wie in Fig. 1 dargestellt, in Teilberei­chen verpreßt angeordnet ist.Since such Heizgaszugrohre I flow in the installed state in the water-bearing interior of a boiler from below in the direction of arrow B, the sleeve 4 or its sheet metal blank 4 'is advantageously cut in the sense of FIG. 3 and then rounded to the sleeve. This results in a formation of the Heizgaszugrohres such that the sleeve 4 to the inflow side Z of the tube I provided with a bevel cut 5 and with its longest surface line (when executing Example is a whole median MS) "below", that is, arranged on the inflow side B. This configuration of a heating gas draft tube with only two shells and the additional arrangement of a comparatively thin-walled additional sleeve can of course also be used for double-skin heating gas draft tubes if the outer tube is not, as shown in FIG. 1, pressed in parts.

Claims (4)

1. Heizgaszugrohr, insbesondere für Niedertemperaturheiz­kessel, bei denen mehrere Heizgaszugrohre von einer Brenn- bzw. Zuström- bzw. Umlenkkammer aus, den wasser­führenden Innenraum des Kesselgehäuses im wesentlichen horizontal durchgreifend, zu einer Rauchgassammelkammer verlaufend angeordnet sind und jedes Heizgaszugrohr (1) aus zwei ineinander angeordneten Rohren (1, 2) gebildet ist, wobei das äußere Rohr (1) mindestens in der abzugs­seitigen Hälfte in Teilbereichen an das innere Rohr wär­meleitend dicht angepreßt und das innere Rohr (2) mit Längsrippen (6) versehen ist,
dadurch gekennzeichnet,
daß im abzugsseitigen Bereich (3) zwischen dem äußeren Rohr (1) und dem inneren Rohr (2) eine metallische Hülse (4) wärmeleitend zu beiden Rohren (1, 2) eingepreßt an­geordnet ist, wobei die Wandstärke (W) der Hülse (4) dünner ausgebildet ist als die der beiden Rohre (1, 2).1.Heating gas draft tube, in particular for low-temperature boilers, in which several heating gas draft tubes are arranged from a combustion or inflow or deflection chamber, penetrating the water-carrying interior of the boiler housing essentially horizontally, running to a flue gas collecting chamber, and each heating gas draft tube (1) consists of two one inside the other arranged tubes (1, 2) is formed, the outer tube (1) being pressed onto the inner tube in a heat-conducting manner, at least in the extraction side half, and the inner tube (2) is provided with longitudinal ribs (6),
characterized,
that in the exhaust-side area (3) between the outer tube (1) and the inner tube (2) a metallic sleeve (4) is arranged in a heat-conducting manner to both tubes (1, 2), the wall thickness (W) of the sleeve (4 ) is formed thinner than that of the two tubes (1, 2). 2. Heizgaszugrohre nach Anspruch 1,
dadurch gekennzeichnet,
daß die Wandstärke (W) der Hülse (4) mit 0,5 bis 1,0 mm, vorzugsweise mit 0,75 mm bemessen ist.2. Heizgaszugrohre according to claim 1,
characterized,
that the wall thickness (W) of the sleeve (4) is dimensioned with 0.5 to 1.0 mm, preferably with 0.75 mm. 3. Heizgaszugrohr nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Hülse (4) zur Zuströmseite (Z) des Rohres hin mit einem Schräganschnitt (5) versehen und mit ihrer längsten Mantellinie (M) unten zwischen den beiden Roh­ren (1, 2) angeordnet ist.3. Heizgaszugrohr according to claim 1 or 2,
characterized,
that the sleeve (4) to the inflow side (Z) of the tube with a bevel cut (5) and with it longest surface line (M) is arranged below between the two tubes (1, 2). 4. Heizgaszugrohr nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß das innere Rohr (2) aus zu einem Rohr gerundeten Blechzuschnitt gebildet ist und dessen Längsrippen (6) aus dem Blechzuschnitt gefaltet sind.4. Heizgaszugrohr according to any one of claims 1 to 3,
characterized,
that the inner tube (2) is formed from a sheet metal blank rounded to a tube and its longitudinal ribs (6) are folded from the sheet metal blank.
EP90103715A 1989-03-11 1990-02-26 Heating gas draft tube Expired - Lifetime EP0387584B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90103715T ATE83062T1 (en) 1989-03-11 1990-02-26 HEATING GAS PIPE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903022U DE8903022U1 (en) 1989-03-11 1989-03-11 Heating gas flue pipe
DE8903022U 1989-03-11

Publications (3)

Publication Number Publication Date
EP0387584A2 true EP0387584A2 (en) 1990-09-19
EP0387584A3 EP0387584A3 (en) 1991-03-13
EP0387584B1 EP0387584B1 (en) 1992-12-02

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EP90103715A Expired - Lifetime EP0387584B1 (en) 1989-03-11 1990-02-26 Heating gas draft tube

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EP (1) EP0387584B1 (en)
AT (1) ATE83062T1 (en)
DE (2) DE8903022U1 (en)
ES (1) ES2036853T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1008819A2 (en) 1998-12-11 2000-06-14 Vulcano-Sadeca, S.A. Hot water generator for operation at low temperature

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9103302U1 (en) * 1991-03-18 1992-07-23 Vießmann, Hans, Dr., 3559 Battenberg Three-pass boiler
DE19511021C2 (en) * 1995-03-28 1998-10-01 Centrotherm Abgastechnik Gmbh Pipe section for an air-exhaust gas guide

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE337324C (en) * 1919-01-14 1921-05-30 Hugo Junkers Protective device on liquid heaters
DE3205119A1 (en) * 1982-02-12 1983-08-25 Hans Dr.h.c. 3559 Battenberg Vießmann Heating boiler for liquid or gaseous fuels
DE8531100U1 (en) * 1985-11-04 1987-10-29 Vießmann, Hans, Dr.h.c., 3559 Battenberg Heating gas flue pipe

Family Cites Families (2)

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DE3309930A1 (en) * 1983-03-19 1984-09-20 August Brötje GmbH & Co, 2902 Rastede Heating boiler with a boiler heating surface of inner and outer shells arranged at a predetermined spacing from each other
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DE337324C (en) * 1919-01-14 1921-05-30 Hugo Junkers Protective device on liquid heaters
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1008819A2 (en) 1998-12-11 2000-06-14 Vulcano-Sadeca, S.A. Hot water generator for operation at low temperature
EP1008819A3 (en) * 1998-12-11 2002-09-25 Vulcano-Sadeca, S.A. Hot water generator for operation at low temperature

Also Published As

Publication number Publication date
EP0387584A3 (en) 1991-03-13
DE8903022U1 (en) 1990-07-19
ATE83062T1 (en) 1992-12-15
EP0387584B1 (en) 1992-12-02
DE59000520D1 (en) 1993-01-14
ES2036853T3 (en) 1993-06-01

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