EP0122504A2 - Storagr water heater with direct heating by fumes - Google Patents

Storagr water heater with direct heating by fumes Download PDF

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Publication number
EP0122504A2
EP0122504A2 EP84103124A EP84103124A EP0122504A2 EP 0122504 A2 EP0122504 A2 EP 0122504A2 EP 84103124 A EP84103124 A EP 84103124A EP 84103124 A EP84103124 A EP 84103124A EP 0122504 A2 EP0122504 A2 EP 0122504A2
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EP
European Patent Office
Prior art keywords
flue gas
gas pipe
flow
baffles
insert
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Application number
EP84103124A
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German (de)
French (fr)
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EP0122504A3 (en
Inventor
Alfred Oesting
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Individual
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Individual
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Publication of EP0122504A2 publication Critical patent/EP0122504A2/en
Publication of EP0122504A3 publication Critical patent/EP0122504A3/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
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels

Definitions

  • the invention relates to a flow insert for the upright flue gas pipe of a directly heated hot water tank according to the preamble of claim 1.
  • Such a flow insert is already known from DE-GM 72 29 628.
  • a flow insert is described there, which consists of a helically wound sheet metal strip with lateral incisions.
  • the flue gas stream entering the flue gas pipe from the combustion chamber is halved, the two flue gas streams being brought into good heat-conducting contact with the wall of the flue gas pipe by the helical guide.
  • the flue gases can no longer be drawn off by simple buoyancy if the slope of the helical sheet insert is flattened too much in order to improve the heat exchange.
  • the known device can not be removed in full length from the flue gas pipe during maintenance work because of its rigid design, and reinserted without a considerable assembly effort (emptying and moving the device, disconnecting all supply lines).
  • the object of the invention is to improve a flow insert of the type described in the introduction in such a way that the heat exchange is increased considerably, the ease of maintenance also being to be ensured, ie the flow insert should be replaceable when the device is stationary. This object is achieved with the features of the characterizing part of patent claim 1.
  • the semi-elliptical shape of the inclined baffles ensures their form-fitting contact with the cylindrical wall of the flue pipe, which enables the undivided flue gas flow to be guided in a targeted manner, which impinges alternately on the wall of the flue gas pipe.
  • the inclination of the baffles in the lower area is selected so that the vertical flue gas flow is prevented as little as possible with good heat exchange, as a result of which a floating flue gas column is formed.
  • baffle bracket ensures that the exhaust gas flow is not divided, but remains fully intact and that due to the low heat absorption capacity of the bracket, the flue gases, heat is almost only removed via the cylinder wall of the flue gas pipe, which leads to high efficiency.
  • the flow insert Due to the flexible design of the flow insert, it can be easily removed from the flue gas pipe and reinserted without the entire hot water tank having to be emptied, laid flat and disconnected from all of its connecting lines, which would be necessary with the known room heights in known devices.
  • the flow insert (1 and la) is located in a standing flue gas pipe (8) which connects to the top of a combustion chamber (7). Flue gas pipe (8) and combustion chamber (7) are surrounded by a water jacket (5).
  • the flow insert consists of a central holder (3) and baffles (2) arranged on it.
  • the baffles (2) are arranged alternately, the inclination being adapted to the rising flue gas flow in the area below the middle subdivision (4) and directed against the course of the flue gas flow in the area above the subdivision (4).
  • the spacer (6) centers the insert (1 and la) in the flue gas pipe and the bracket (9) is used for the upper attachment.
  • the baffles (2) and spacer (6) in the lower flue gas pipe (8) form an incandescent body for the afterburning of the flue gases, which causes a very high CO 2 content and no CO content. This means high efficiency and less environmental pollution.
  • the baffles (2) in the upper flue gas pipe (8) not only serve to swirl and slow down the flue gas flow, but also to conduct condensate from the flue gas pipe wall to the baffle plate holder in the event of low temperature, for faster evaporation.

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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)
  • Incineration Of Waste (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)

Abstract

The flow insert for installation in the vertically arranged flue of a directly heated warm water storage device consists of a flexible mounting having attached thereto baffle plates in the form of half ellipses arranged stepwise and alternating from side to side. The angle of inclination of the baffle plates is aligned with the flow of the flue gases in the lower part of the insert and against it in the upper part. The inventive insert has much improved efficiency and provides the possibility of being easier to exchange during maintenance. The reduced adverse effect on the environment for public benefit is especially to be emphasised. <IMAGE>

Description

Die Erfindung betrifft einen Strömungseinsatz für das stehend angeordnete Rauchgasrohr eines direktbeheizten Warmwasserspeichers gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a flow insert for the upright flue gas pipe of a directly heated hot water tank according to the preamble of claim 1.

Ein derartiger Strömungseinsatz ist bereits aus dem DE-GM 72 29 628 bekannt. Dort ist ein Strömungseinsatz beschrieben, der aus einem schraubenförmig gewundenen Blechstreifen mit seitlichen Einschnitten besteht.Such a flow insert is already known from DE-GM 72 29 628. A flow insert is described there, which consists of a helically wound sheet metal strip with lateral incisions.

Bei dieser Anordnung wird der aus der Brennkammer in das Rauchpasrohr eintretende Rauchgasstrom halbiert, wobei die beiden Rauchgasströme durch die schraubenförmige Führung in guten wärmeleitenden Kontakt mit der Wandung des Rauchgasrohres gebracht werden sollen.In this arrangement, the flue gas stream entering the flue gas pipe from the combustion chamber is halved, the two flue gas streams being brought into good heat-conducting contact with the wall of the flue gas pipe by the helical guide.

Dabei wird jedoch ein großer Teil der in den Rauchgasen enthaltene Wärme an den Einsatz abgegeben, der diese angrund seiner Breite und damit guten Wärmeaufnahme und Leitfähigkeit zum Rauchgasaustritt führt, anstatt sie an das zu erwärmende Wasser abzugeben. Die bekannte Vorrichtung arbeitet somit nicht wirtschaftlich.However, a large part of the heat contained in the flue gases is given off to the insert, which due to its width and thus good heat absorption and conductivity leads it to the flue gas outlet instead of releasing it to the water to be heated. The known device thus does not work economically.

Zudem können bei der bekannten Vorrichtung die Rauchgase dann nicht mehr durch einfachen Auftrieb abziehen, wenn zur Verbesserung des Wärmetausches die Steigung der schraubenförmigen Blecheinlage zu stark abgeflacht wird.In addition, in the known device, the flue gases can no longer be drawn off by simple buoyancy if the slope of the helical sheet insert is flattened too much in order to improve the heat exchange.

Außerdem läßt sich die bekannte Vorrichtung bei Wartungsarbeiten wegen ihrer starren Ausführung nicht in ganzer Länge aus dem Rauchgasrohr entfernen, und wieder einsetzen, ohne daß ein erheblicher Montageaufwand (Entleeren und Umlegen des Gerätes, Trennen von sämtlichen Zuleitungen) getrieben werden muß.In addition, the known device can not be removed in full length from the flue gas pipe during maintenance work because of its rigid design, and reinserted without a considerable assembly effort (emptying and moving the device, disconnecting all supply lines).

Der Erfindung liegt die Aufgabe zugrunde, einen Strömungseinsatz der eingangs beschriebenen Art derart zu verbessern, daß der Wärmetausch erheblich gesteigert wird, wobei auch die Wartungsfreundlichkeit gewährleistet werden soll, d.h. der Strömungseinsatz soll bei stehendem Gerät auswechselbar sein. Die Lösung dieser Aufgabe erfolgt mit den Merkmalen des kennzeichnenden Teils von Patentanspruch 1.The object of the invention is to improve a flow insert of the type described in the introduction in such a way that the heat exchange is increased considerably, the ease of maintenance also being to be ensured, ie the flow insert should be replaceable when the device is stationary. This object is achieved with the features of the characterizing part of patent claim 1.

Die Halb-Ellipsenform der geneigten Leitbleche gewährleistet deren formschlüssiges Anliegen an der zylindrischen Wandung des Rauchrohres, wodurch eine gezielte Führung des ungeteilten Rauchgasstromes möglich ist, der wechselseitig auf die Wandung des Rauchgasrohres auftrifft.The semi-elliptical shape of the inclined baffles ensures their form-fitting contact with the cylindrical wall of the flue pipe, which enables the undivided flue gas flow to be guided in a targeted manner, which impinges alternately on the wall of the flue gas pipe.

Die Neigung der Leitbleche im unteren Bereich ist so gewählt, daß die vertikale Rauchgasströmung bei gutem Wärmetausch möglichst wenig behindert wird, wodurch sich eine treibende Rauchgassäule bildet.The inclination of the baffles in the lower area is selected so that the vertical flue gas flow is prevented as little as possible with good heat exchange, as a result of which a floating flue gas column is formed.

Durch die umgekehrte Neigung der Leitbleche im oberen Bereich des Einsatzes erfolgt eine gewollte Stauung und Verwirbelung der Rauchgase um deren zusätzlichen Verweildauer zwecks Erhöhung des Wärmetausches zu bewirken.Due to the reverse inclination of the baffles in the upper area of the insert, the flue gases are deliberately stowed and swirled in order to increase their length of stay in order to increase the heat exchange.

Die dünne und flache Ausbildung der Leitblechhalterung gewährleistet, daß der Abgasstrom nicht geteilt wird, sondern voll erhalten bleibt und daß aufgrund der geringen Wärmeaufnahmefähigkeit der Halterung, den Rauchgasen, Wärme fast nur über die Zylinderwandung des Rauchgasrohres entzogen wird, was zu einem hohen Wirkungsgrad führt.The thin and flat design of the baffle bracket ensures that the exhaust gas flow is not divided, but remains fully intact and that due to the low heat absorption capacity of the bracket, the flue gases, heat is almost only removed via the cylinder wall of the flue gas pipe, which leads to high efficiency.

Durch die flexible Ausbildung des Strömungseinsatzes läßt sich dieser leicht aus dem Rauchgasrohr entnehmen und wieder einsetzen, ohne daß der gesamte Warmwasserspeicher entleert, flachgelegt und von seinen sämtlichen Anschlußleitungen getrennt werden muß, was bei den üblichen Raumhöhen bei bekannten Vorrichtungen erforderlich wäre.Due to the flexible design of the flow insert, it can be easily removed from the flue gas pipe and reinserted without the entire hot water tank having to be emptied, laid flat and disconnected from all of its connecting lines, which would be necessary with the known room heights in known devices.

Weiterhin ergibt sich der Vorteil der nachträglichen Umrüstung alter Anlagen, in niedrigen Räumen.There is also the advantage of retrofitting old systems in low rooms.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert.The invention is explained below with reference to the drawing.

Der Strömungseinsatz (1 und la) befindet sich in einem stehenden Rauchgasrohr (8), welches an die Oberseite einer Brennkammer (7) anschließt. Rauchgasrohr (8) und Brennkammer (7) sind von einem Wassermantel (5) umgeben.The flow insert (1 and la) is located in a standing flue gas pipe (8) which connects to the top of a combustion chamber (7). Flue gas pipe (8) and combustion chamber (7) are surrounded by a water jacket (5).

Der Strömungseinsatz besteht aus einer mittleren Halterung (3) und daran angeordneten Leitblechen (2). Die Leitbleche (2) sind wechselseitig angeordnet, wobei im Bereich unterhalb der mittleren Unterteilung (4), die Neigung dem steigenden Rauchgasstrom angepaßt ist und im Bereich oberhalb der Unterteilung (4) gegen den Verlauf des Rauchgasstromes gerichtet ist. Die Distanzhalterung (6) zentriert den Einsatz (1 und la) im Rauchgasrohr und die Halterung (9) dient der oberen Befestigung.The flow insert consists of a central holder (3) and baffles (2) arranged on it. The baffles (2) are arranged alternately, the inclination being adapted to the rising flue gas flow in the area below the middle subdivision (4) and directed against the course of the flue gas flow in the area above the subdivision (4). The spacer (6) centers the insert (1 and la) in the flue gas pipe and the bracket (9) is used for the upper attachment.

Die Leitbleche (2) und Distanzhalterung (6) im unteren Rauchgasrohr (8) bilden einen Glühkörper zur Nachverbrennung der Rauchgase, welches ein sehr hoher C02 - Gehalt und kein CO-Gehalt bewirkt. Dies bedeutet hoher Wirkungsgrad und geringere Umweltbelastung.The baffles (2) and spacer (6) in the lower flue gas pipe (8) form an incandescent body for the afterburning of the flue gases, which causes a very high CO 2 content and no CO content. This means high efficiency and less environmental pollution.

Die Leitbleche (2) im oberen Rauchgasrohr (8) dienen in der Anordnung nicht nur einen verwirbelden und abbremsenden Rauchgasstrom, sondern bei Untertemperatur eine Kondensatführung von der Rauchgasrohrwand zur Leitblechhalterung, zwecks schnelleren Verdampfung.In the arrangement, the baffles (2) in the upper flue gas pipe (8) not only serve to swirl and slow down the flue gas flow, but also to conduct condensate from the flue gas pipe wall to the baffle plate holder in the event of low temperature, for faster evaporation.

Claims (5)

l.Strömungseinsatz für das stehend angeordnete Rauchgasrohr eines direkt beheizten Warmwasserspeichers für gasförmige Brennstoffe, wobei das vertikal verlaufende Rauchgasrohr direkt an die Oberseite der Brennkammer anschließt und wie diese, von einem Wassermantel umgeben ist, dadurch gekennzeichnet,
daß der Strömungseinsatz (l und la) aus Leitblechen (2) in Halb-Ellipsenform besteht, welche stufenweise beidseitig einer flexiblen Halterung (3) angeordnet sind, wobei eine Distanzhalterung (6) vorgesehen ist und im unteren Bereich die Leitbleche aufgrund ihrer Neigungswinkel die Rauchgase stufenweise und gleichmäßig an die Wand des Rauchgasrohres führen und daß im oberen Bereich ab mittlerer Unterteilung (4) die Leitbleche aufgrund ihrer geänderten Neigungswinkel einen bremsenden und wirbelerzeugenden Einfluß auf die Rauchgase zur Verbesserung des Wärmetausches ausübten.l. flow insert for the upright flue gas pipe of a directly heated hot water tank for gaseous fuels, the vertically running flue gas pipe directly adjoining the top of the combustion chamber and, like this, surrounded by a water jacket, characterized in that
that the flow insert (l and la) consists of baffles (2) in a semi-elliptical shape, which are gradually arranged on both sides of a flexible holder (3), a spacer (6) being provided and in the lower area the baffles due to their inclination the smoke gases lead gradually and evenly to the wall of the flue gas pipe and that in the upper area from the middle subdivision (4) the guide plates exerted a braking and vortex-producing influence on the flue gases to improve the heat exchange due to their changed inclination angle. 2.Strömungseinsatz nach patentanspruch 1, dadurch gekennzeichnet, daß die Leitbleche aus VA-Stahl bestehen.2. Flow insert according to claim 1, characterized in that the guide plates are made of VA steel. 3.Dünne und schmale flexible Leitblech-Halterung (3) wegen geringer Wärmeaufnahme und Wärme-Weiterleitung im Aufsteigenden Abgasstrom.3. Thin and narrow flexible baffle bracket (3) due to low heat absorption and heat transfer in the rising exhaust gas flow. 4.Leitbleche (2) und Distanzhalterung (6) im unteren Rauchgasrohr (8) bilden einen Glühkörper zur Nachverbrennung der Rauchgase.4.Director plates (2) and spacer (6) in the lower flue gas pipe (8) form a glow plug for the afterburning of the flue gases. 5.Leitbleche (2) im oberen Rauchgasrohr (8) dienen gleichzeitig zur Kondensatführung von der Rauchgasrohrwand zur Leitblechhalterung, zwecks beschleunigter Verflüchtigung.5. Baffles (2) in the upper flue gas pipe (8) also serve to guide the condensate from the flue gas pipe wall to the baffle plate holder, in order to accelerate volatilization.
EP84103124A 1983-03-22 1984-03-21 Storagr water heater with direct heating by fumes Withdrawn EP0122504A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833310267 DE3310267C2 (en) 1983-03-22 1983-03-22 Flow insert for the upright flue gas pipe of a directly heated hot water storage tank
DE3310267 1983-03-22

Publications (2)

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EP0122504A2 true EP0122504A2 (en) 1984-10-24
EP0122504A3 EP0122504A3 (en) 1986-01-22

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EP84103124A Withdrawn EP0122504A3 (en) 1983-03-22 1984-03-21 Storagr water heater with direct heating by fumes

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DE (1) DE3310267C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT395349B (en) * 1988-09-09 1992-11-25 Vaillant Gmbh WATER HEATER

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020034811A (en) * 2000-11-23 2002-05-09 이청기 A boiler
DE102005046036A1 (en) * 2005-09-27 2007-04-05 Robert Bosch Gmbh heater

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1829170U (en) * 1961-01-19 1961-04-06 Eugen Bohlinger ADDITIONAL DEVICE FOR COAL STOVE.
FR1285434A (en) * 1961-01-13 1962-02-23 Toleries De Grenoble Sa Improvements to gas water heaters
DE2063066A1 (en) * 1970-12-22 1972-07-13 Brixa, Franz, Dipl.-Ing., 5800 Hagen Turbulence insert for flue gas passes from heating boilers
US4090559A (en) * 1974-08-14 1978-05-23 The United States Of America As Represented By The Secretary Of The Navy Heat transfer device
FR2381989A1 (en) * 1977-02-24 1978-09-22 Holcroft & Co HEAT RECOVERY

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7229628U (en) * 1973-01-11 Junkers & Co Gmbh Directly heated hot water storage tank

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1285434A (en) * 1961-01-13 1962-02-23 Toleries De Grenoble Sa Improvements to gas water heaters
DE1829170U (en) * 1961-01-19 1961-04-06 Eugen Bohlinger ADDITIONAL DEVICE FOR COAL STOVE.
DE2063066A1 (en) * 1970-12-22 1972-07-13 Brixa, Franz, Dipl.-Ing., 5800 Hagen Turbulence insert for flue gas passes from heating boilers
US4090559A (en) * 1974-08-14 1978-05-23 The United States Of America As Represented By The Secretary Of The Navy Heat transfer device
FR2381989A1 (en) * 1977-02-24 1978-09-22 Holcroft & Co HEAT RECOVERY

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT395349B (en) * 1988-09-09 1992-11-25 Vaillant Gmbh WATER HEATER

Also Published As

Publication number Publication date
EP0122504A3 (en) 1986-01-22
DE3310267C2 (en) 1984-10-04
DE3310267A1 (en) 1983-11-03

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