EP0936409B1 - Exhaust gas duct for a heating device - Google Patents

Exhaust gas duct for a heating device Download PDF

Info

Publication number
EP0936409B1
EP0936409B1 EP98120876A EP98120876A EP0936409B1 EP 0936409 B1 EP0936409 B1 EP 0936409B1 EP 98120876 A EP98120876 A EP 98120876A EP 98120876 A EP98120876 A EP 98120876A EP 0936409 B1 EP0936409 B1 EP 0936409B1
Authority
EP
European Patent Office
Prior art keywords
exhaust
gas
heater
flow
air
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.)
Expired - Lifetime
Application number
EP98120876A
Other languages
German (de)
French (fr)
Other versions
EP0936409A2 (en
EP0936409A3 (en
Inventor
Hans-Werner Zimmermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0936409A2 publication Critical patent/EP0936409A2/en
Publication of EP0936409A3 publication Critical patent/EP0936409A3/en
Application granted granted Critical
Publication of EP0936409B1 publication Critical patent/EP0936409B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • F24H9/2042—Preventing or detecting the return of combustion gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M11/00—Safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/003—Baffles or deflectors for air or combustion products; Flame shields in flue gas ducts
    • F23M9/006—Backflow diverters
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/112—Preventing or detecting blocked flues
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/235—Temperature of exhaust gases
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2211/00—Flue gas duct systems
    • F23J2211/10—Balanced flues (combining air supply and flue gas exhaust)
    • F23J2211/101—Balanced flues (combining air supply and flue gas exhaust) with coaxial duct arrangement

Definitions

  • the invention is based on an exhaust gas duct and Heater with exhaust system according to the genus Main claims. It is known that in particular atmospheric heaters are part of the Exhaust gas routing is designed as a flow safety device (e.g. G 88 01 994.2). Such designed as exhaust hoods Flow fuses have side openings, so in the event of a backflow of the exhaust gases through the openings in can reach the installation room. Near the Exhaust gas sensors measure the exhaust gas flow and the heater is disabled until the fault is rectified Operation set. In addition, the one Room air-dependent heater through the chimney draft caused pressure fluctuations by the in the Flow protection arranged openings balanced.
  • a flow safety device e.g. G 88 01 994.2
  • An exhaust / combustion air duct for a wall-hung gas heater with one Air box is known from GB-A-2 242 264.
  • For exhaust gas discharge is one Exhaust pipe provided through which the exhaust gas is discharged under fan pressure.
  • An air supply line is arranged coaxially around the exhaust line, via which the Air supply takes place.
  • In a further embodiment is in the air box Heater formed around the exhaust pipe around an annular gap opening which the combustion air is fed to the burner.
  • From AU-A-10 304 66 is an exhaust gas duct for a heater with a Flow control known, in which the flow control a first connection piece for an exhaust pipe leading to the heater and a second connection piece for an external exhaust system in a chimney or chimney.
  • the two Connection sockets are arranged horizontally offset from each other. To manage the Exhaust gases are provided within the flow safety device. Also points the flow control an opening for connection to the installation room of the Heater on.
  • An opening of the exhaust gas duct leading into the installation space of the heater is also known from DE-A1-30 08 399.
  • an exhaust gas sensor is arranged, which in the event of a backlog of Exhaust gas provides a signal.
  • From US-A-4,403,599 is a flow line between a connecting piece a heater and a connector for an exhaust pipe known.
  • the flow line has an opening to the installation room of the heater, the opening only opens when the pressure in the heater housing is greater than that of the surrounding atmosphere.
  • From DE-U1-93 01 720 is a condensing boiler with a Exhaust gas behind a heat exchanger unit formed exhaust gas guide known.
  • Exhaust gas routing is used to collect the exhaust gas and via an exhaust pipe from the air box of the heater. This is due to the passage through the air box Exhaust pipe surrounded by an annular gap, above the combustion air in the air box of the heater can flow in.
  • the heater according to the invention has the advantage that one with an exhaust gas guide Flow protection equipped, room air dependent heater on one Outside air heater can be converted by the Flow control removed and through an air exhaust system in the form of a coaxial extending double tube is replaced.
  • the heater itself does not need to be built to be changed. This makes it easy to convert from a room air-dependent one Heater possible on a room air independent heater.
  • the opening for pressure decoupling of the heater from that on the heater connected exhaust duct is advantageously at the top of the first Connection piece of the flow fuse arranged.
  • FIG. 1 shows the heater according to the invention with the exhaust gas routing according to the invention
  • Figure 2 a sectioned side view of the exhaust system with a Representation of air and exhaust gas flows in normal operation
  • Figure 3 is a plan view of the exhaust system
  • Figure 4 is a Representation of the exhaust gas flows within the exhaust system Backflow of exhaust gases
  • Figure 5 an alternative Exhaust gas routing for the heater shown in Figure 1 use as an external wall unit independent of ambient air.
  • the heater of Figure 1 has a burner 10, the one Fuel gas-air mixture by a fan, not shown is fed.
  • the burner 10 sits at the top of one Combustion chamber 12 by a heat exchanger unit 14 after bottom and side is completed.
  • an exhaust gas chamber 16 Downstream of the Heat exchanger unit 14, an exhaust gas chamber 16 is arranged on the lowest point of which is not shown Condensate drainage is provided.
  • the Burner and heat exchanger unit and exhaust pipe 18 are surrounded by an air box 20, which at its upper End of an opening 22 for the passage of the exhaust pipe 18th to the outside.
  • the diameter of the opening 22 is so dimensioned that between the exhaust pipe 18 and the Forms an annular gap over the edges of the Operation of the heater using the burner 10 upstream fan combustion air are sucked can.
  • At the level of the opening 22 in the air box 20 is connected to the exhaust pipe when viewed in the direction of flow 18 a flow control described in more detail below 24 on.
  • the flow fuse 24 has a first connection piece 26, which is gas-tight with the end of the exhaust pipe 18 connected is.
  • the in the first connection piece 26th forming flow channel is via a connector 28 performed in a second connection piece 30, such that the first and the second connecting piece 26, 30 horizontally are staggered.
  • the second Connection piece 30 does not connect to one shown chimney or chimney.
  • first connection piece 26 At the upper end of the first connection piece 26 is one Opening 32 provided which connects the Flow control 24 or the exhaust system with the Installation room of the heater.
  • Exhaust gas sensor 34 for the detection of back-up exhaust gas arranged.
  • a is in the first connection piece 26 Baffle 36 for the connector 28 and the second connecting piece 30 flowing into the chimney outlet Exhaust gases provided.
  • the extension of the flow protection in horizontal direction is thereby offset X (see Fig. 2) of the two connecting pieces 26 and 30 determined. This results in a flat flow fuse 24, so that the overall height of the heater is not essential overall is enlarged.
  • the heater works in the following way: About the the burner 10 upstream fan is from the Installation room of the heater via opening 22 Combustion air and a not shown Gas supply device fuel gas supplied to the burner 10. The arising during combustion in the combustion chamber 12 Combustion gases pass through the heat exchanger unit 14 into the exhaust gas space 16 and are identified as exhaust gases (dash-dotted lines shown) on the exhaust pipe 18 and on the Flow control 24 and the adjoining Chimney drained to the outside. About that in the first Connection piece 26 arranged opening 32 finds one Pressure decoupling of the heater from the rest Exhaust gas discharge instead; at the same time air escapes from the Installation room via the opening 32 in the exhaust duct, see above that the exhaust gas is diluted and thus the dew point is lowered becomes.
  • Exhaust gases reach the exhaust gases through the opening 32 in the installation room of the heater.
  • the exhaust gases are detected by the exhaust gas sensor 34 and the heater after a pause of about 20 minutes started again automatically.
  • air condensing condensing boiler can be used in old buildings, for example, where one Refurbishment of the chimney has not yet taken place. is the old chimney with a new air-exhaust system replaced or is in the chimney a new air exhaust system the heater can be integrated simple way in a room independent fully condensing heater.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Incineration Of Waste (AREA)
  • Air Supply (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)

Abstract

The safety device (24) for maintaining a flow of flue gas out of the heater is provided with a first connection (26) for a flue gas pipe (18) from the heater, and a second connection (30) for the chimney. The two connections are positioned in different horizontal planes. The safety device is activated when a buildup of flue gas is registered by a sensor in the flue gas outlet region of the heater. An Independent claim is also included for a heater fitted with this flue gas removal arrangement, containing a heat exchanger and fan-assisted burner.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Abgasführung und einem Heizgerät mit Abgasführung nach der Gattung der Hauptansprüche. Es ist bekannt, daß bei insbesondere atmosphärisch betriebenen Heizgeräten ein Teil der Abgasführung als Strömungssicherung ausgebildet ist (z. B. G 88 01 994.2). Derartige als Abgashauben ausgebildete Strömungssicherungen weisen seitliche Öffnungen auf, damit bei einem Rückstau der Abgase diese über die Öffnungen in den Aufstellungsraum gelangen können. In der Nähe der Öffnungen angebrachte Abgassensoren erfassen den Abgasstrom und das Heizgerät wird bis zur Beseitigung der Störung außer Betrieb gesetzt. Darüberhinaus werden die bei einem raumluftabhängigen Heizgerät durch den Kaminzug hervorgerufenen Druckschwankungen durch die in der Strömungssicherung angeordneten Öffnungen ausgeglichen.The invention is based on an exhaust gas duct and Heater with exhaust system according to the genus Main claims. It is known that in particular atmospheric heaters are part of the Exhaust gas routing is designed as a flow safety device (e.g. G 88 01 994.2). Such designed as exhaust hoods Flow fuses have side openings, so in the event of a backflow of the exhaust gases through the openings in can reach the installation room. Near the Exhaust gas sensors measure the exhaust gas flow and the heater is disabled until the fault is rectified Operation set. In addition, the one Room air-dependent heater through the chimney draft caused pressure fluctuations by the in the Flow protection arranged openings balanced.

Weiterhin sind raumluftabhängige Heizgeräte bekannt, bei denen die Verbrennungsluftzufuhr gebläseunterstützt erfolgt. Auch bei dieser Art von Heizgeräten besteht die Notwendigkeit, die Abgasführung mit einer Strömungssicherung auszustatten, wenn sie an einem Kamin angeschlossen sind. Furthermore, air heaters are known, at which the combustion air supply is fan-assisted. This type of heater also exists Necessity, the exhaust system with a flow control equip if they are connected to a fireplace.

Eine Abgas-/Verbrennungsluftführung für ein wandhängendes Gasheizgerät mit einem Luftkasten ist aus der GB-A-2 242 264 bekannt. Zur Abgasabführung ist eine Abgasleitung vorgesehen, über die das Abgas unter Gebläsedruck abgeführt wird. Koaxial um die Abgasleitung ist eine Luftzufuhrleitung angeordnet, über die die Luftzuführung erfolgt. Bei einer weiteren Ausgestaltung ist im Luftkasten des Heizgerätes um die Abgasleitung herum eine ringspaltförmige Öffnung ausgebildet, über die die Verbrennungsluft für den Brenner zugeführt wird.An exhaust / combustion air duct for a wall-hung gas heater with one Air box is known from GB-A-2 242 264. For exhaust gas discharge is one Exhaust pipe provided through which the exhaust gas is discharged under fan pressure. An air supply line is arranged coaxially around the exhaust line, via which the Air supply takes place. In a further embodiment is in the air box Heater formed around the exhaust pipe around an annular gap opening which the combustion air is fed to the burner.

Aus der AU-A-10 304 66 ist eine Abgasführung für ein Heizgerät mit einer Strömungssicherung bekannt, bei der die Strömungssicherung einen ersten Anschluss-Stutzen für ein zum Heizgerät führendes Abgasrohr und einen zweiten Anschluss-Stutzen für eine externe Abgasführung in einen Kamin bzw. Schornstein aufweist. Die beiden Anschluss-Stutzen sind horizontal versetzt zueinander angeordnet. Zur Führung des Abgases innerhalb der Strömungssicherung sind Leitbleche vorgesehen. Außerdem weist die Strömungssicherung eine Öffnung für die Verbindung mit dem Aufstellungsraum des Heizgerätes auf.From AU-A-10 304 66 is an exhaust gas duct for a heater with a Flow control known, in which the flow control a first connection piece for an exhaust pipe leading to the heater and a second connection piece for an external exhaust system in a chimney or chimney. The two Connection sockets are arranged horizontally offset from each other. To manage the Exhaust gases are provided within the flow safety device. Also points the flow control an opening for connection to the installation room of the Heater on.

Eine in den Aufstellungsraum des Heizgerätes führende Öffnung der Abgasführung ist ebenfalls aus DE-A1- 30 08 399 bekannt. Hierbei ist in der Öffnung der Abgasführung zum Aufstellungsraum hin ein Abgassensor angeordnet, der im Fall eines Rückstaus des Abgases ein Signal liefert.An opening of the exhaust gas duct leading into the installation space of the heater is also known from DE-A1-30 08 399. Here is in the opening of the exhaust duct to the installation room, an exhaust gas sensor is arranged, which in the event of a backlog of Exhaust gas provides a signal.

Aus der US-A-4,403,599 ist eine Strömungsleitung zwischen einem Anschluss-Stutzen eines Heizgerätes und einem Anschluss für ein Abgasrohr bekannt. Die Strömungsleitung weist dabei eine Öffnung zum Aufstellungsraum des Heizgerätes auf, wobei die Öffnung erst öffnet, wenn der Druck im Gehäuse des Heizgerätes größer ist als der der umgebenden Atmosphäre.From US-A-4,403,599 is a flow line between a connecting piece a heater and a connector for an exhaust pipe known. The flow line has an opening to the installation room of the heater, the opening only opens when the pressure in the heater housing is greater than that of the surrounding atmosphere.

Aus dem DE-U1- 93 01 720 ist ein Brennwertgerät mit einer in Strömungsrichtung des Abgases hinter einer Wärmetauschereinheit ausgebildeten Abgasführung bekannt. In der Abgasführung wird das Abgas gesammelt und über ein Abgasrohr aus dem Luftkasten des Heizgerätes herausgeführt. An der Durchführung durch den Luftkasten ist das Abgasrohr von einem Ringspalt umgeben, über den Verbrennungsluft in den Luftkasten des Heizgerätes einströmen kann.From DE-U1-93 01 720 is a condensing boiler with a Exhaust gas behind a heat exchanger unit formed exhaust gas guide known. In the Exhaust gas routing is used to collect the exhaust gas and via an exhaust pipe from the air box of the heater. This is due to the passage through the air box Exhaust pipe surrounded by an annular gap, above the combustion air in the air box of the heater can flow in.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Heizgerät hat den Vorteil, dass ein mit einer Abgasführung mit Strömungssicherung ausgestattetes, raumluftabhängiges Heizgerät auf ein raumluftunabhängiges Außenwand-Heizgerät umgerüstet werden kann, indem die Strömungssicherung entfernt und durch ein Luft-Abgas-System in Form eines koaxial verlaufenden Doppelrohres ersetzt wird. Dabei braucht das Heizgerät selbst baulich nicht verändert werden. Dadurch ist eine einfache Umrüstung von einem raumluftabhängigen Heizgerät auf ein raumluftunabhängiges Heizgerät möglich.The heater according to the invention has the advantage that one with an exhaust gas guide Flow protection equipped, room air dependent heater on one Outside air heater can be converted by the Flow control removed and through an air exhaust system in the form of a coaxial extending double tube is replaced. The heater itself does not need to be built to be changed. This makes it easy to convert from a room air-dependent one Heater possible on a room air independent heater.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen der Abgasführung und des Heizgerätes möglich.The measures listed in the subclaims are advantageous Refinements of the exhaust gas routing and the heater are possible.

Die Öffnung zur Druckentkopplung des Heizgerätes von der am Heizgerät angeschlossenen Abgasführung ist in vorteilhafter Weise am oberen Ende des ersten Anschlussstutzens der Strömungssicherung angeordnet. Damit findet die Druckentkopplung unmittelbar hinter dem Abgasrohr des Heizgerätes statt, so dass an den in Strömungsrichtung gesehen hinter der Öffnung liegenden Teil der Abgasführung keine hohen Dichtheitsanforderungen gestellt werden müssen.The opening for pressure decoupling of the heater from that on the heater connected exhaust duct is advantageously at the top of the first Connection piece of the flow fuse arranged. With that, the Decoupling of pressure takes place immediately behind the exhaust pipe of the heater, so that the part of the exhaust gas duct located behind the opening in the direction of flow no high tightness requirements have to be made.

In unmittelbarer Nähe zu der in der Strömungssicherung angebrachten Öffnung ist seitlich am ersten Anschlussstutzen ein Abgassensor zur Detektion von rückstauendem Abgas vorgesehen.Is in close proximity to the opening made in the flow control An exhaust gas sensor on the side of the first connection piece for the detection of backflow Exhaust gas provided.

Damit die Abgase ohne größere Strömungsverluste innerhalb der Strömungssicherung geführt werden können, ist innerhalb des ersten Anschlussstutzens der Strömungssicherung ein Leitblech vorgesehen, das die Abgase über einen Verbindungskanal zum zweiten Anschlussstutzen führt. So that the exhaust gases without major flow losses within the flow control can be carried out is within the first connection piece Flow protection provided a baffle that the exhaust gases over a Connection channel leads to the second connecting piece.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 das erfindungsgemäße Heizgerät mit der erfindungsgemäßen Abgasführung, Figur 2 eine geschnittene Seitenansicht der Abgasführung mit einer Darstellung der Luft- und Abgasströme in Normalbetrieb, Figur 3 eine Draufsicht auf die Abgasführung, Figur 4 eine Darstellung der Abgasströme innerhalb der Abgasführung bei Rückstau von Abgasen und Figur 5 eine alternative Abgasführung für das in Figur 1 dargestellte Heizgerät bei einer Verwendung als raumluftunabhängiges Außenwandgerät.An embodiment of the invention is in the drawing shown and in the description below explained. FIG. 1 shows the heater according to the invention with the exhaust gas routing according to the invention, Figure 2 a sectioned side view of the exhaust system with a Representation of air and exhaust gas flows in normal operation, Figure 3 is a plan view of the exhaust system, Figure 4 is a Representation of the exhaust gas flows within the exhaust system Backflow of exhaust gases and Figure 5 an alternative Exhaust gas routing for the heater shown in Figure 1 use as an external wall unit independent of ambient air.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Das Heizgerät nach Figur 1 hat einen Brenner 10, dem ein Brenngas-Luftgemisch durch ein nicht dargestelltes Gebläse zugeführt wird. Der Brenner 10 sitzt am oberen Ende einer Brennkammer 12, die durch eine Wärmetauschereinheit 14 nach unten und seitlich abgeschlossen ist. Stromab der Wärmetauschereinheit 14 ist ein Abgasraum 16 angeordnet, an dessen tiefster Stelle eine nicht dargestellte Kondensatabführung vorgesehen ist. Hinter dem Abgasraum 16 schließt sich in Strömungsrichtung gesehen ein Abgasrohr 18 an, das an der Wärmetauschereinheit 14 befestigt ist. Die Brenner- und Wärmetauschereinheit sowie das Abgasrohr 18 sind von einem Luftkasten 20 umgeben, der an seinem oberen Ende eine Öffnung 22 für die Durchführung des Abgasrohres 18 nach außen aufweist. Der Durchmesser der Öffnung 22 ist so bemessen, daß sich zwischen dem Abgasrohr 18 und den Öffnungsrändern ein Ringspalt ausbildet, über den beim Betrieb des Heizgeräts mit Hilfe des dem Brenner 10 vorgeschalteten Gebläses Verbrennungsluft angesaugt werden kann. In Höhe der im Luftkasten 20 angebrachten Öffnung 22 schließt sich in Strömungsrichtung gesehen an das Abgasrohr 18 eine im folgenden näher beschriebene Strömungssicherung 24 an.The heater of Figure 1 has a burner 10, the one Fuel gas-air mixture by a fan, not shown is fed. The burner 10 sits at the top of one Combustion chamber 12 by a heat exchanger unit 14 after bottom and side is completed. Downstream of the Heat exchanger unit 14, an exhaust gas chamber 16 is arranged on the lowest point of which is not shown Condensate drainage is provided. Behind the exhaust chamber 16 an exhaust pipe 18 closes when viewed in the direction of flow attached to the heat exchanger unit 14. The Burner and heat exchanger unit and exhaust pipe 18 are surrounded by an air box 20, which at its upper End of an opening 22 for the passage of the exhaust pipe 18th to the outside. The diameter of the opening 22 is so dimensioned that between the exhaust pipe 18 and the Forms an annular gap over the edges of the Operation of the heater using the burner 10 upstream fan combustion air are sucked can. At the level of the opening 22 in the air box 20 is connected to the exhaust pipe when viewed in the direction of flow 18 a flow control described in more detail below 24 on.

Die Strömungssicherung 24 weist einen ersten Anschlußstutzen 26 auf, der mit dem Ende des Abgasrohres 18 abgasdicht verbunden ist. Der sich im ersten Anschlußstutzen 26 ausbildende Strömungskanal wird über ein Verbindungsstück 28 in einem zweiten Anschlußstutzen 30 geführt, dergestalt, daß der erste und der zweite Anschlußstutzen 26, 30 horizontal versetzt zueinander angeordnet sind. Der zweite Anschlußstutzen 30 stellt die Verbindung zu einem nicht dargestellten Kamin bzw. Schornstein her.The flow fuse 24 has a first connection piece 26, which is gas-tight with the end of the exhaust pipe 18 connected is. The in the first connection piece 26th forming flow channel is via a connector 28 performed in a second connection piece 30, such that the first and the second connecting piece 26, 30 horizontally are staggered. The second Connection piece 30 does not connect to one shown chimney or chimney.

Am oberen Ende des ersten Anschlußstutzens 26 ist eine Öffnung 32 vorgesehen, die die Verbindung der Strömungssicherung 24 bzw. der Abgasführung mit dem Aufstellungsraum des Heizgerätes herstellt. In unmittelbarer Nähe zur Öffnung 32 ist an dem ersten Anschlußstutzen 26 ein Abgassensor 34 zur Detektion von rückstauendem Abgas angeordnet. Weiterhin ist im ersten Anschlußstutzen 26 ein Leitblech 36 für die über das Verbindungsstück 28 und den zweiten Anschlußstutzen 30 in die Kaminabführung strömenden Abgase vorgesehen. Die Ausdehnung der Strömungssicherung in horizontaler Richtung wird dabei durch den Versatz X (siehe Fig. 2) der beiden Anschlußstutzen 26 und 30 bestimmt. Dadurch ergibt sich eine flache Strömungssicherung 24, so daß die Einbauhöhe des Heizgeräts insgesamt nicht wesentlich vergrößert wird.At the upper end of the first connection piece 26 is one Opening 32 provided which connects the Flow control 24 or the exhaust system with the Installation room of the heater. In the immediate Proximity to the opening 32 is at the first connecting piece 26 Exhaust gas sensor 34 for the detection of back-up exhaust gas arranged. Furthermore, a is in the first connection piece 26 Baffle 36 for the connector 28 and the second connecting piece 30 flowing into the chimney outlet Exhaust gases provided. The extension of the flow protection in horizontal direction is thereby offset X (see Fig. 2) of the two connecting pieces 26 and 30 determined. This results in a flat flow fuse 24, so that the overall height of the heater is not essential overall is enlarged.

Das Heizgerät arbeitet auf folgender Art und Weise: Über das dem Brenner 10 vorgeschaltete Gebläse wird aus dem Aufstellungsraum des Heizgeräts über die Öffnung 22 Verbrennungsluft und über eine nicht dargestellte Gaszufuhreinrichtung Brenngas dem Brenner 10 zugeführt. Die bei der Verbrennung in der Brennkammer 12 entstehenden Verbrennungsgase gelangen über die Wärmetauschereinheit 14 in den Abgasraum 16 und werden als Abgase (strichpunktiert dargestellt) über das Abgasrohr 18 und über die Strömungssicherung 24 und den sich daran anschließenden Kamin nach außen abgeführt. Über die im ersten Anschlußstutzen 26 angeordnete Öffnung 32 findet eine Druckentkopplung des Heizgeräts von der restlichen Abgasabführung statt; gleichzeitig gelangt Luft aus dem Aufstellungsraum über die Öffnung 32 in die Abgasführung, so daß das Abgas verdünnt und damit der Taupunkt abgesenkt wird.The heater works in the following way: About the the burner 10 upstream fan is from the Installation room of the heater via opening 22 Combustion air and a not shown Gas supply device fuel gas supplied to the burner 10. The arising during combustion in the combustion chamber 12 Combustion gases pass through the heat exchanger unit 14 into the exhaust gas space 16 and are identified as exhaust gases (dash-dotted lines shown) on the exhaust pipe 18 and on the Flow control 24 and the adjoining Chimney drained to the outside. About that in the first Connection piece 26 arranged opening 32 finds one Pressure decoupling of the heater from the rest Exhaust gas discharge instead; at the same time air escapes from the Installation room via the opening 32 in the exhaust duct, see above that the exhaust gas is diluted and thus the dew point is lowered becomes.

Da die bei der Verbrennung entstehenden heißen Abgase über die Wärmetauschereinheit 14 unter den Taupunkt abgekühlt werden, ist die Brennkammer 12 mit einem Bypasskanal 38 verbunden, der unter Umgehung der Wärmetauschereinheit 14 unmittelbar in das Abgasrohr 18 einmündet. Während des Betriebs des Heizgeräts wird in Abhängigkeit von dem im Abgasrohr 18 herrschenden Staudruck die Abgastemperatur im Abgasrohr 18 angehoben, so daß ein Kondensatanfall in der gesamten Abgasführung vermieden wird. Because the hot exhaust gases generated during combustion are over the heat exchanger unit 14 has cooled below the dew point is the combustion chamber 12 with a bypass channel 38 connected, bypassing the heat exchanger unit 14 opens directly into the exhaust pipe 18. During the Operation of the heater is dependent on the im Exhaust pipe 18 prevailing back pressure the exhaust gas temperature in Exhaust pipe 18 raised so that condensate accumulation in the entire exhaust gas routing is avoided.

Kommt es aufgrund ungünstiger Wetterbedingungen oder aufgrund von Verstopfungen im Kamin zu einem Rückstau der Abgase, so gelangen wie in Figur 4 dargestellt, die Abgase über die Öffnung 32 in den Aufstellungsraum des Heizgeräts. Dabei werden die Abgase durch den Abgassensor 34 detektiert und das Heizgerät nach einer Pause von etwa 20 Minuten wieder automatisch gestartet.Is it due to bad weather conditions or backlog due to blockages in the chimney Exhaust gases, as shown in Figure 4, reach the exhaust gases through the opening 32 in the installation room of the heater. The exhaust gases are detected by the exhaust gas sensor 34 and the heater after a pause of about 20 minutes started again automatically.

Durch die vorbeschriebene Ausbildung der Strömungssicherung 24 ist es auf einfache Art und Weise möglich, das beschriebene teilkondensierende und raumluftabhängig arbeitende Brennwertgerät in ein raumluftunabhängiges, vollkondensierendes Brennwertgerät umzurüsten. Dazu wird die Strömungssicherung 24 vom Abgasrohr 18 entfernt und durch ein sogenanntes Luft-Abgas-System (siehe Figur 5) ersetzt. Das Luft-Abgas-System besteht aus einem Abgasrohr 40 und einem konzentrisch das Abgasrohr 40 umschließenden Verbrennungsluftkanal 42, die beide nach außen führen. Bei einem derartigen Brennwertgerät sind die abgasführenden Teile kondensatunanfällig, so daß in diesem Fall auf den Bypasskanal 38 zur Anhebung der Abgastemperatur verzichtet werden kann. Das in den Figuren 1 bis 4 beschriebene raumluftabhängige teilkondensierende Brennwertgerät kann beispielsweise im Altbau eingesetzt werden, bei dem eine Sanierung des Schornsteins noch nicht stattgefunden hat. Ist der alte Schornstein durch ein neues Luft-Abgas-System ersetzt worden, bzw. ist in den Schornstein ein neues Luft-Abgas-System integriert worden, kann das Heizgerät auf einfache Art und Weise in ein raumluftunabhängiges vollkondensierendes Heizgerät umgerüstet werden.Through the above-described training of flow control 24 it is possible in a simple way that partially condensing and ambient air described working condensing boiler in a room air independent, to convert fully condensing condensing boiler. For this, the Flow control 24 removed from the exhaust pipe 18 and through a so-called air-exhaust system (see Figure 5) replaced. The air-exhaust system consists of an exhaust pipe 40 and a concentrically surrounding the exhaust pipe 40 Combustion air duct 42, both of which lead to the outside. at such a condensing boiler are the exhaust gas Parts insensitive to condensate, so that in this case on the Bypass channel 38 for raising the exhaust gas temperature is dispensed with can be. That described in Figures 1 to 4 air condensing condensing boiler can be used in old buildings, for example, where one Refurbishment of the chimney has not yet taken place. is the old chimney with a new air-exhaust system replaced or is in the chimney a new air exhaust system the heater can be integrated simple way in a room independent fully condensing heater.

Claims (4)

  1. Heating appliance with a blower-assisted burner, with a heat exchanger unit and with an exhaust-gas ducting which can be connected to an external exhaust-gas ducting, an exhaust-gas pipe (18) being arranged downstream of the heat exchanger unit (14), as seen in the direction of flow, the heating appliance being surrounded by an air box (20) which has an orifice (22) for an exhaust-gas pipe (18) and for the combustion-air supply, and the orifice (22) being selected larger than the diameter of the exhaust-gas pipe (18), so that an annular gap for the supply of the combustion air is formed around the exhaust-gas pipe (18), characterized in that the exhaust-gas ducting is provided with a flow safeguard (24) which has an orifice (32), opening into the installation space of the heating appliance, for operating the heating appliance as a function of the room air and also a first connection piece (26) for the exhaust-gas pipe (18) and a second connection piece (30) for the external exhaust-gas ducting, the two connection pieces (26, 30) being arranged so as to be offset horizontally to one another, in that an air/exhaust-gas system in the form of a coaxially running double pipe can be coupled to the exhaust-gas pipe (18) and to the annular gap (22), and in that the connection piece (26) of the flow safeguard (24) is dimensioned such that the flow safeguard (24) can be replaced by the double pipe capable of being coupled to the exhaust-gas pipe (18) and to the annular gap (22).
  2. Heating appliance according to Claim 1, characterized in that the flow safeguard (24) is designed as a flat component extending essentially in a horizontal position.
  3. Heating appliance according to Claim 1 or 2, characterized in that an exhaust-gas sensor (34) for the detection of building-up exhaust gas is provided laterally at the first connection piece (26) of the flow safeguard (24) in the immediate vicinity of the orifice (32).
  4. Heating appliance according to one of the preceding claims, characterized in that a guide plate (36) is provided for guiding the exhaust gases within the flow safeguard (24).
EP98120876A 1998-02-14 1998-11-04 Exhaust gas duct for a heating device Expired - Lifetime EP0936409B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29802545U 1998-02-14
DE29802545U DE29802545U1 (en) 1998-02-14 1998-02-14 Exhaust gas routing for a heater

Publications (3)

Publication Number Publication Date
EP0936409A2 EP0936409A2 (en) 1999-08-18
EP0936409A3 EP0936409A3 (en) 2000-01-12
EP0936409B1 true EP0936409B1 (en) 2003-06-25

Family

ID=8052671

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120876A Expired - Lifetime EP0936409B1 (en) 1998-02-14 1998-11-04 Exhaust gas duct for a heating device

Country Status (3)

Country Link
EP (1) EP0936409B1 (en)
AT (1) ATE243830T1 (en)
DE (2) DE29802545U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITAN20020062A1 (en) * 2002-12-23 2004-06-24 Merloni Termosanitari Spa Ora Ariston Thermo Spa MULTIPURPOSE FORCED DRAWER BOILER.
ITAN20020061A1 (en) * 2002-12-23 2004-06-24 Merloni Termosanitari Spa Ora Ariston Thermo Spa UNIVERSAL WALL BOILER, STANDARD-SEMI-CONDENSING-CONDENSING.
ES2960744T3 (en) * 2019-12-04 2024-03-06 Vaillant Gmbh Gas heating appliance with harmful gas detector

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB546201A (en) * 1941-04-19 1942-07-01 Norman Grater Improvements in or relating to vertical gas fired tubular boilers
AU1030466A (en) * 1967-06-07 1968-12-12 Rheem Australia Pty. Limited Improvements in diverter assemblies for gas water heaters
DE3008399A1 (en) * 1980-03-05 1981-09-17 Küppersbusch AG, 4650 Gelsenkirchen Gas heater backwash and unburnt gas protector - consists of N-type semiconductor sensor with porous coating damping response
US4403599A (en) * 1980-11-18 1983-09-13 Carrier Corporation Spillage damper for a combustion system
AT387843B (en) 1987-02-17 1989-03-28 Vaillant Gmbh FLOW CONTROL
IT1241083B (en) * 1990-03-23 1993-12-29 Nuovo Pignone Spa WATERPROOF WALLPROOF GAS BOILER PERFECTED FOR DOMESTIC USE
DE9301720U1 (en) * 1992-02-13 1993-04-22 Joh. Vaillant Gmbh U. Co, 5630 Remscheid heater
FR2736995B1 (en) * 1995-07-21 1997-08-22 Formastim Sa Soc APPARATUS FOR TRANSFORMING THE GAS CIRCUITS OF CLASSIC BOILERS INTO SEALED GAS CIRCUITS, IMPROVING THE COMBUSTION EFFICIENCY AND REDUCING THE EMISSIONS OF IMBULS

Also Published As

Publication number Publication date
DE29802545U1 (en) 1999-06-17
ATE243830T1 (en) 2003-07-15
EP0936409A2 (en) 1999-08-18
DE59808814D1 (en) 2003-07-31
EP0936409A3 (en) 2000-01-12

Similar Documents

Publication Publication Date Title
EP2312213B1 (en) Regulator for gas burner
EP1746345B1 (en) Method for operating a gas burner
EP0936409B1 (en) Exhaust gas duct for a heating device
EP0434599B1 (en) Premixing gas burner
DE102021110061A1 (en) Arrangement for reducing the consequences of a flashback in a premix burner of a heating device
DE102008051060B4 (en) Heater with exhaust gas monitoring device
DE60212285T2 (en) Shut-off device of the gas flow in a gas appliance
AT503132B1 (en) Flow control monitoring method for heater, involves cutting off temperature of heater detected by sensor during operation of heater when temperature falls below certain temperature difference
DE3402760A1 (en) Cooker, in particular gas cooker for outside use
EP1241408B1 (en) Burner for an air-gas mixture
DE2920338C2 (en)
EP0445393B1 (en) Burner with flue gas recirculation, especially forced-draught burner
EP0314972B1 (en) Device for heating water particularly a hot water boiler
DE3345202A1 (en) Apparatus for the reduction of the dew point temperature of exhaust gases
DE3411038C2 (en)
EP0793063A1 (en) Heating installation with heat exchanger
DE4237719C2 (en) Atmospheric gas burner
DE19754581C2 (en) heater
DE3137740A1 (en) Gas heating device with atmospheric burner
EP2687784B1 (en) System comprising an exhaust device and method for operating such a system
AT414037B (en) METHOD FOR AVOIDING CONDENSATION ON FAN SUPPORTED FUEL-DRIVEN HEATING EQUIPMENT
DE1679786C (en) Water heater with a burner sealingly attached to the combustion shaft
AT508207B1 (en) APARTMENT VENTILATION
DE3036506A1 (en) Exhaust gas hood for gas fired heaters - has plate partially covering header chamber to reverse-flow duct opening and remainder is baffled
EP0733853B1 (en) Heating device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE ES FR GB IT LI NL

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000712

AKX Designation fees paid

Free format text: AT CH DE ES FR GB IT LI NL

17Q First examination report despatched

Effective date: 20020102

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT CH DE ES FR GB IT LI NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030625

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59808814

Country of ref document: DE

Date of ref document: 20030731

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031104

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20031022

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031130

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031222

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040326

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20101123

Year of fee payment: 13

Ref country code: IT

Payment date: 20101124

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20111125

Year of fee payment: 14

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20121104

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121130

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121104

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20160126

Year of fee payment: 18

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59808814

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170601