EP0042129A2 - Heat exchanger for flue gases - Google Patents

Heat exchanger for flue gases Download PDF

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Publication number
EP0042129A2
EP0042129A2 EP81104401A EP81104401A EP0042129A2 EP 0042129 A2 EP0042129 A2 EP 0042129A2 EP 81104401 A EP81104401 A EP 81104401A EP 81104401 A EP81104401 A EP 81104401A EP 0042129 A2 EP0042129 A2 EP 0042129A2
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EP
European Patent Office
Prior art keywords
heat exchanger
exhaust gas
inlet
gas heat
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81104401A
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German (de)
French (fr)
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EP0042129A3 (en
EP0042129B1 (en
Inventor
Jürgen Dr. Tenhumberg
Reinhold Kehl
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.)
Cofrabel Nv
SCHONEWELLE BV
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Cofrabel Nv
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
SCHONEWELLE BV
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Application filed by Vaillant Austria GmbH, Cofrabel Nv, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, SCHONEWELLE BV filed Critical Vaillant Austria GmbH
Priority to AT81104401T priority Critical patent/ATE8178T1/en
Publication of EP0042129A2 publication Critical patent/EP0042129A2/en
Publication of EP0042129A3 publication Critical patent/EP0042129A3/en
Application granted granted Critical
Publication of EP0042129B1 publication Critical patent/EP0042129B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters

Definitions

  • the present invention relates to an exhaust gas heat exchanger according to the preamble of the main claim.
  • Such a heat exchanger has become known through Buijserd and Vrij "Heat recovery from combustion gases on household gas appliances" GWF 120 (1979) 11, page 545 ff.
  • Such exhaust gas heat exchangers are either mounted above the boiler or placed directly on the boiler. The exhaust gas flow is redirected 8 times, and the cooled exhaust gas is passed behind the exhaust gas heat exchanger through the still hot exhaust gas in front of the heat exchanger.
  • these incompatibilities result in poor efficiency of the exhaust gas heat exchanger and, on the other hand, ei ne re-routing of the exhaust pipe, since such exhaust gas heat exchangers can hardly be inserted into an existing exhaust pipe system.
  • the fan for extracting the cooled exhaust gases from the exhaust gas heat exchanger is attached to a relatively deep point in the line routing, which results in difficulties in keeping the fan dry and thus free of corrosion.
  • the present invention is therefore based on the object to provide an exhaust gas heat exchanger, the inlet and outlet are arranged such that it can be installed in an existing exhaust duct of a boiler, circulating water heater, combi water heater or furnace, which works with an optimal efficiency and in which post-heating of the exhaust gas leaving the heat exchanger is possible.
  • the exhaust gas heat exchanger according to FIG. 1 is an integrated device which is provided with an inlet 1 at the bottom and an outlet 2 at the top, the center axes of which are aligned with one another, for installation in a vertical exhaust gas line and which is fastened to a set-up wall as a separate unit by means of fastening elements 3 and 4 can be.
  • the exhaust gas heat exchanger is essentially made of sheet metal parts 5, in the area of the inlet 1, ie upstream, of the actual heat exchanger body 6, the outer walls, its underside and side walls are provided with thermal insulation 7. While inlet 1 and outlet 2 can be connected to one another via a vertical channel 8 in the sense of a bypass channel, a heat exchanger inlet opening 9 branches off from the channel 8 on the underside and a heat exchanger outlet opening 10 on the top near the outlet.
  • the heat exchanger inlet opening 9 can be completely or partially closed by a deflection flap 11, the pivot point of which is provided at 12. It is provided that the position of the flap 11 is adjusted by a heat sensor that senses the temperature of the exhaust gas at the height of the outlet 2 len. This can ensure that a certain temperature of the exhaust gas in the outlet, which is dependent on the dew point, is not fallen below, in order to avoid the condensation of the exhaust gas in the chimney.
  • the actual heat exchanger body 6 is provided above the interior 16 arranged laterally next to the channel 8.
  • the heat exchanger body 6 is thermally insulated on all sides either by the insulation or by the hollow wall from surrounding parts and the atmosphere.
  • the heat exchanger body 6 is connected to a supply and return line of a heating system, not shown.
  • Extending above the heat exchanger body 6 is an outlet space which merges into a central constriction 18 in which an impeller 19 of a fan 20 is arranged, which is driven by a motor 21.
  • a line 22 branches off radially from the fan 20 and leads to the outlet openings 10.
  • the fins 13 or a protruding edge 23 in the course of the hollow wall 17 serve as discharge moldings for condensate dripping from the heat exchanger body 6. This condensate collects at the lowest point of the sheet metal housing 5, where it is discharged to the outside from a line 24.
  • the exhaust gas heat exchanger according to FIG. 2 is a so-called add-on device which can be attached and attached to an existing heating boiler by means of feet 30.
  • Inlet 1 and outlet 2 are aligned. Seen from the inlet, an inlet space 16 is adjoined by the lateral inlet duct 15, the outer walls of which are provided with the thermal insulation 7, which takes place laterally with respect to the outside atmosphere and with respect to the heat exchanger body 6.
  • the inlet duct 15 merges into a further space 31, to which the heat exchanger body 6 is directly connected, which is also protected on all sides by the insulation 7 from the surrounding spaces.
  • the space 31 is shielded from the outlet 2 by a beam wall 33 provided with bores 32.
  • the outlet space 34 Downstream of the heat exchanger body, the outlet space 34 is provided, which is provided with the insulation 7 already mentioned in the direction of the inlet 1 to the exhaust gas heat exchanger.
  • the outlet space 34 is connected to the outlet 2 via an outlet channel 35, the outlet channel 35 is in turn connected to the heat exchanger body via insulation 7, but is not insulated from the atmosphere, only by the sheet metal wall 5.
  • the impeller 19 is provided above the jet wall 33, the motor of which is not shown.
  • the outlet of the blower is directly connected to the outlet 2.
  • the bypass channel 8 is absent.
  • the entire exhaust gas that comes from the heat source must pass through the heat exchanger element 6.
  • the fan with fan is arranged at the highest point of the heat exchanger; in the exemplary embodiment according to FIG. Two, the fan is also heated via the jet wall 33 or by hot exhaust gas escaping there, so that the fan always runs under dry conditions, so that signs of corrosion are largely avoided.
  • inlet and outlet openings 1 and 2 are aligned, so that both exhaust gas heat exchangers can easily be inserted into existing exhaust pipes by separating a correspondingly long piece from the exhaust pipes.
  • Both exemplary embodiments have the advantage over the prior art that line crossings are avoided, so that an optimal efficiency is largely achieved without undesirably cooled exhaust gas being heated up again behind the heat exchanger. It is possible to design the two devices according to FIGS. One and two both as wall-mounted devices without a chimney connection, that is to say with exhaust gas discharge directly through the fastening wall, and as attachment devices on the existing heat source. Furthermore, in particular in the exemplary embodiment according to FIG. 2, it is possible to add tertiary air from the installation space to the exhaust gas, for example via a nozzle 37. This air could also come from the outside atmosphere men.
  • the space 34 in the embodiment of Figure two is designed so that the bottom floor forms a groove 38 in which dripping condensate collects and can be discharged to the outside via a line. This ensures that the condensate can precipitate without exposure to hot, fresh exhaust gas.

Abstract

1. An exhaust gas heat exchanger for a fuelfired heat source which is provided with a heat exchanger element (6), for installation into an exhaust gas duct which has bends and is provided with a blower (19) and with a heat insulation (7), wherein the exhaust gas outlet (2) of the exhaust gas heat exchanger is provided at the top of the latter and the blower (19) is disposed in the exhaust gas stream at said top, characterized in that the exhaust gas in conducted in an S-shaped path having two mutually opposite ends and extending in one plane the blower (19) is preceded by a bypass exhaust gas line (32) leading to the heat exchanger element (6) and an opening (37) for admixing tertiary air is provided.

Description

Die vorliegende Erfindung bezieht sich auf einen Abgaswärmetauscher gemäß dem Oberbegriff des Hauptanspruches.The present invention relates to an exhaust gas heat exchanger according to the preamble of the main claim.

Ein solcher Wärmetauscher ist bekanntgeworden durch Buijserd und Vrij "Wärmerückgewinnung aus Verbrennungsgasen an Haushaltsgasgeräten" GWF 120 (1979) 11, Seite 545 ff. Solche Abgaswärmetauscher werden entweder oberhalb des Kessels montiert oder direkt auf den Heizkessel aufgesetzt. Hierbei findet eine 8malige Umlenkung des Abgasstromes statt, außerdem wird das abgekühlte Abgas hinter dem Abgaswärmetauscher durch das noch heiße Abgas vor dem Wärmetauscher hindurchgeführt. Aus diesen Unzuträglichkeiten resultiert einmal ein mangelhafter Wirkungsgrad des Abgaswärmetauschers und zum zweiten eine Neuführung des Abgasrohres, da sich solche Abgaswärmetauscher kaum in eine bestehende Abgasrohranlage einfügen lassen. Weiterhin ist das Gebläse zum Abziehen der abgekühlten Abgase aus dem Abgaswärmetauscher an einer relativ tiefen Stelle der Leitungsführung angebracht, woraus Schwierigkeiten resultieren, das Gebläse trocken und damit korrosionsfrei zu halten.Such a heat exchanger has become known through Buijserd and Vrij "Heat recovery from combustion gases on household gas appliances" GWF 120 (1979) 11, page 545 ff. Such exhaust gas heat exchangers are either mounted above the boiler or placed directly on the boiler. The exhaust gas flow is redirected 8 times, and the cooled exhaust gas is passed behind the exhaust gas heat exchanger through the still hot exhaust gas in front of the heat exchanger. On the one hand, these incompatibilities result in poor efficiency of the exhaust gas heat exchanger and, on the other hand, ei ne re-routing of the exhaust pipe, since such exhaust gas heat exchangers can hardly be inserted into an existing exhaust pipe system. Furthermore, the fan for extracting the cooled exhaust gases from the exhaust gas heat exchanger is attached to a relatively deep point in the line routing, which results in difficulties in keeping the fan dry and thus free of corrosion.

Der vorliegenden Erfindung liegt mithin die Aufgabe zugrunde, einen Abgaswärmetauscher zu schaffen, dessen Ein- und Auslaß derart angeordnet sind, daß er in eine bereits bestehende Abgasführung eines Kessels, Umlaufwasserheizers, Combi-Wasserheizers oder Ofens eingebaut werden kann, der mit einem optimalen Wirkungsgrad arbeitet und bei dem eine Nachheizung des Abgases, das den Wärmetauscher verläßt, möglich ist.The present invention is therefore based on the object to provide an exhaust gas heat exchanger, the inlet and outlet are arranged such that it can be installed in an existing exhaust duct of a boiler, circulating water heater, combi water heater or furnace, which works with an optimal efficiency and in which post-heating of the exhaust gas leaving the heat exchanger is possible.

Die Lösung dieser Aufgabe gelingt mit den kennzeichenden Merkmalen des Hauptanspruches.This problem is solved with the characterizing features of the main claim.

Weitere Ausgestaltungen und besonders vorteilhafte Weiterbildungen der Erfindung gehen aus den Unteransprüchen, der nachfolgenden Beschreibung und den Figuren eins und zwei der Zeichnung hervor, die die Ausführungsbeispiele der Erfindung näher erläutern.Further refinements and particularly advantageous developments of the invention emerge from the subclaims, the following description and the figures one and two of the drawing, which explain the exemplary embodiments of the invention in more detail.

Es zeigen

  • Figur eins einen Schnitt durch einen Abgaswärmetauscher und
  • Figur zwei einen Schnitt durch eine andere Ausgestaltung des Abgaswärmetauschers.
Show it
  • Figure one shows a section through an exhaust gas heat exchanger and
  • Figure two shows a section through another embodiment of the exhaust gas heat exchanger.

Der Abgaswärmetauscher gemäß Figur eins stellt ein integriertes Gerät dar, das mit einem untenliegenden Einlaß 1 und einem obenliegenden Auslaß 2, deren Mittelachsen miteinander fluchten, zum Einbau in eine senkrechte Abgasleitung vorgesehen ist und das über Befestigungselemente 3 und 4 an einer Aufstellungswand als separate Einheit befestigt werden kann.The exhaust gas heat exchanger according to FIG. 1 is an integrated device which is provided with an inlet 1 at the bottom and an outlet 2 at the top, the center axes of which are aligned with one another, for installation in a vertical exhaust gas line and which is fastened to a set-up wall as a separate unit by means of fastening elements 3 and 4 can be.

Der Abgaswärmetauscher ist im wesentlichen aus Blechteilen 5 hergestellt, im Bereich des Einlasses 1, also stromaufwärts, des eigentlichen Wärmetauscherkörpers 6 sind die Außenwände, seine Unterseite und Seitenwände mit einer Wärmeisolierung 7 versehen. Während Einlaß 1 und Auslaß 2 über einen senkrechten Kanal 8 im Sinne eines Bypaßkanals miteinander verbindbar sind, zweigt vom Kanal 8 an der Unterseite eine Wärmetauscher-Einlaßöffnung 9 und an der Oberseite in der Nähe des Auslasses eine Wärmetauscher-Auslaßöffnung 10 ab. Die Wärmetauscher-Einlaßöffnung 9 ist durch eine Umlenkklappe 11, deren Drehpunkt bei 12 vorgesehen ist, ganz oder teilweise verschließbar. Hierbei ist es vorgesehen, die Stellung der Klappe 11 durch einen Wärmefühler, der die Temperatur des Abgases in der Höhe des Auslasses 2 fühlt, zu verstellen. Hiermit kann erreicht werden, daß eine bestimmte vom Taupunkt abhängige Temperatur des Abgases im Auslaß nicht unterschritten wird, um die Kondensation des Abgases im Schornstein zu vermeiden.The exhaust gas heat exchanger is essentially made of sheet metal parts 5, in the area of the inlet 1, ie upstream, of the actual heat exchanger body 6, the outer walls, its underside and side walls are provided with thermal insulation 7. While inlet 1 and outlet 2 can be connected to one another via a vertical channel 8 in the sense of a bypass channel, a heat exchanger inlet opening 9 branches off from the channel 8 on the underside and a heat exchanger outlet opening 10 on the top near the outlet. The heat exchanger inlet opening 9 can be completely or partially closed by a deflection flap 11, the pivot point of which is provided at 12. It is provided that the position of the flap 11 is adjusted by a heat sensor that senses the temperature of the exhaust gas at the height of the outlet 2 len. This can ensure that a certain temperature of the exhaust gas in the outlet, which is dependent on the dew point, is not fallen below, in order to avoid the condensation of the exhaust gas in the chimney.

Von der Wärmetauscher-Einlaßöffnung 9 führen durch Lamellen 13 getrennte Kanäle 14 und 15 zu einem Wärmetauscher-Einlaßraum 16, der gegenüber der Außenatmosphäre durch die Isolierung 7 und an der Rückseite durch eine Hohlwand 17 isoliert ist.From the heat exchanger inlet opening 9 channels 14 and 15 separated by fins 13 lead to a heat exchanger inlet space 16 which is insulated from the outside atmosphere by the insulation 7 and at the rear by a hollow wall 17.

Oberhalb des seitlich neben dem Kanal 8 angeordneten Innenraumes 16 ist der eigentliche Wärmetauscherkörper 6 vorgesehen. Auch der Wärmetauscherkörper 6 ist allseitig entweder durch die Isolierung oder die Hohlwand gegenüber umgebenden Teilen und der Atmosphäre wärmeisoliert. Der Wärmetauscherkörper 6 ist an eine Vor- und Rücklaufleitung einer nicht weiter dargestellten Heizunganlage angeschlossen. Oberhalb des Wärmetauscherkörpers 6 erstreckt sich ein Auslaßraum, der in eine zentrale Engstelle 18 übergeht, in der ein Laufrad 19 eines Gebläses 20 angeordnet ist, das von einem Motor 21 angetrieben ist. Aus dem Gebläse 20 zweigt radial eine Leitung 22 ab, die zu den Auslaßöffnungen 10 führt.The actual heat exchanger body 6 is provided above the interior 16 arranged laterally next to the channel 8. The heat exchanger body 6 is thermally insulated on all sides either by the insulation or by the hollow wall from surrounding parts and the atmosphere. The heat exchanger body 6 is connected to a supply and return line of a heating system, not shown. Extending above the heat exchanger body 6 is an outlet space which merges into a central constriction 18 in which an impeller 19 of a fan 20 is arranged, which is driven by a motor 21. A line 22 branches off radially from the fan 20 and leads to the outlet openings 10.

Die Lamellen 13 bzw. eine vorstehende Kante 23 im Zuge der Hohlwand 17 dienen als Ableitformstücke für aus dem Wärmetauscherkörper 6 herabtropfendes Kondensat. Dieses Kondensat sammelt sich am tiefsten Punkt des Blechgehäuses 5, wo es von einer Leitung 24 nach außen abgeführt wird.The fins 13 or a protruding edge 23 in the course of the hollow wall 17 serve as discharge moldings for condensate dripping from the heat exchanger body 6. This condensate collects at the lowest point of the sheet metal housing 5, where it is discharged to the outside from a line 24.

Bei dem Abgaswärmetauscher gemäß Figur zwei handelt es sich um ein sogenanntes Aufsatzgerät, das auf einen bestehenden Heizungskessel mittels Füßen 30 aufgesetzt und befestigt werden kann. Einlaß 1 und Auslaß 2 fluchten zueinander. Vom Einlaß her gesehen, schließt sich an einen Einlaßraum 16 der seitliche Einlaßkanal 15 an, dessen Außenwände mit der Wärmeisolation 7 versehen sind, die sowohl seitlich gegenüber der Außenatmosphäre als auch gegenüber dem Wärmetauscherkörper 6 erfolgt. Der Einlaßkanal 15 geht in einen weiteren Raum 31 über, an den sich unmittelbar der Wärmetauscherkörper 6 anschließt, der auch an allen Seiten durch die Isolierungen 7 gegenüber den umliegenden Räumen geschützt ist. Der Raum 31 ist gegenüber dem Auslaß 2 durch eine mit Bohrungen 32 versehene Strahlwand 33 abgeschirmt. Stromab des Wärmetauscherkörpers ist der Auslaßraum 34 vorgesehen, der in Richtung auf den Einlaß 1 zum Abgaswärmetauscher mit der bereits erwähnten Isolation 7 versehen ist. Der Auslaßraum 34 steht über einen Auslaßkanal 35 mit dem Auslaß 2 in Verbindung, der Auslaßkanal 35 ist wiederum über eine Isolierung 7 mit dem Wärmetauscherkörper, gegenüber der Atmosphäre aber unisoliert, nur durch die Blechwand 5 verbunden.The exhaust gas heat exchanger according to FIG. 2 is a so-called add-on device which can be attached and attached to an existing heating boiler by means of feet 30. Inlet 1 and outlet 2 are aligned. Seen from the inlet, an inlet space 16 is adjoined by the lateral inlet duct 15, the outer walls of which are provided with the thermal insulation 7, which takes place laterally with respect to the outside atmosphere and with respect to the heat exchanger body 6. The inlet duct 15 merges into a further space 31, to which the heat exchanger body 6 is directly connected, which is also protected on all sides by the insulation 7 from the surrounding spaces. The space 31 is shielded from the outlet 2 by a beam wall 33 provided with bores 32. Downstream of the heat exchanger body, the outlet space 34 is provided, which is provided with the insulation 7 already mentioned in the direction of the inlet 1 to the exhaust gas heat exchanger. The outlet space 34 is connected to the outlet 2 via an outlet channel 35, the outlet channel 35 is in turn connected to the heat exchanger body via insulation 7, but is not insulated from the atmosphere, only by the sheet metal wall 5.

In einem Raum 36 oberhalb des Kanals 35 ist oberhalb der Strahlwand 33 das Gebläserad 19 vorgesehen, dessen Motor nicht weiter dargestellt ist. Der Auslaß des Gebläses ist direkt mit dem Auslaß 2 verbunden.In a room 36 above the channel 35, the impeller 19 is provided above the jet wall 33, the motor of which is not shown. The outlet of the blower is directly connected to the outlet 2.

Beim dem Ausführungsbeispiel gemäß Figur zwei fehlt der Bypaßkanal 8, bei diesem Ausführungsbeispiel muß das gesamte Abgas, das von der Wärmequelle kommt, das Wärmetauscherelement 6 durchsetzen. Bei beiden Ausführungbeispielen ist das Gebläse mit Ventilator an der höchsten Stelle des Wärmeaustauschers angeordnet, beim Ausführungsbeispiel gemäß Figur zwei findet noch eine Aufheizung des Gebläses über die Strahlwand 33 bzw. durch dort austretendes heißes Abgas statt, so daß der Ventilator stets unter trockenen Bedingungen läuft, so daß Korrosionserscheinungen weitestgehend vermieden werden. Bei beiden Ausführungsbeispielen fluchten Ein- und Auslaßöffnungen 1 und 2, so daß beide Abgaswärmetauscher in bestehende Abgasleitungen ohne weiteres einfügbar sind, indem ein entsprechend langes Stück aus den Abgasleitungen herausgetrennt wird. Beide Ausführungsbeispiele weisen gegenüber dem Stand der Technik den Vorteil auf, daß Leitungskreuzungen vermieden sind, so daß weitgehend ein optimaler Wirkungsgrad erzielt wird, ohne daß in unerwünschter Weise abgekühltes Abgas hinter dem Wärmeaustauscher wieder aufgeheizt wird. Es ist möglich, die beiden Geräte nach den Figuren eins und zwei sowohl als Wandgeräte auch ohne Kaminanschluß, also mit Abgasabführung direkt durch die Befestigungsmauer, als auch als Aufsetzgeräte auf die bestehende Wärmequelle auszugestalten. Weiterhin ist es insbesondere beim Ausführungsbeispiel nach Figur zwei möglich, dem Abgas Tertiärluft aus dem Aufstellungsraum, beispielsweise über einen Stutzen 37, beizumischen. Diese Luft könnte auch aus der Außenatmosphäre stammen.In the exemplary embodiment according to FIG. Two, the bypass channel 8 is absent. In this exemplary embodiment, the entire exhaust gas that comes from the heat source must pass through the heat exchanger element 6. In both exemplary embodiments, the fan with fan is arranged at the highest point of the heat exchanger; in the exemplary embodiment according to FIG. Two, the fan is also heated via the jet wall 33 or by hot exhaust gas escaping there, so that the fan always runs under dry conditions, so that signs of corrosion are largely avoided. In both exemplary embodiments, inlet and outlet openings 1 and 2 are aligned, so that both exhaust gas heat exchangers can easily be inserted into existing exhaust pipes by separating a correspondingly long piece from the exhaust pipes. Both exemplary embodiments have the advantage over the prior art that line crossings are avoided, so that an optimal efficiency is largely achieved without undesirably cooled exhaust gas being heated up again behind the heat exchanger. It is possible to design the two devices according to FIGS. One and two both as wall-mounted devices without a chimney connection, that is to say with exhaust gas discharge directly through the fastening wall, and as attachment devices on the existing heat source. Furthermore, in particular in the exemplary embodiment according to FIG. 2, it is possible to add tertiary air from the installation space to the exhaust gas, for example via a nozzle 37. This air could also come from the outside atmosphere men.

Der Raum 34 beim Ausführungsbeispiel nach Figur zwei ist so gestaltet, daß der untenliegende Boden eine Rinne 38 bildet, in der sich abtropfendes Kondensat sammelt und nach außen über eine Leitung abgeführt werden kann. Hierbei ist sichergestellt, daß das Kondensat ohne Beaufschlagung mit heißem, frischem Abgas ausfallen kann.The space 34 in the embodiment of Figure two is designed so that the bottom floor forms a groove 38 in which dripping condensate collects and can be discharged to the outside via a line. This ensures that the condensate can precipitate without exposure to hot, fresh exhaust gas.

Claims (9)

1 . Abgaswärmetauscher für eine mit einem weiteren Wärmetauscher versehene, brennstoffbeheizte Wärmequelle zum Einbau in eine mit einem Gebläse versehene, Umlenkungen aufweisende Abgasleitung sowie mit einer Wärmeisolierung, dadurch gekennzeichnet, daß der Abgasauslaß (2) aus dem Abgaswärmetauscher an dessen Oberseite vorgesehen ist, daß an dieser Stelle das Gebläse (19, 21) untergebracht ist, daß die Abgasführung in einer Ebene angeordnet ist und daß eine Bypaßabgasstrecke (32/8) zum Abgaswärmetauscherelement (6) vorgesehen ist.1 . Exhaust gas heat exchanger for a fuel-heated heat source provided with a further heat exchanger for installation in an exhaust line provided with a blower and having deflections, and with thermal insulation, characterized in that the exhaust gas outlet (2) from the exhaust gas heat exchanger is provided on the upper side thereof, at this point the fan (19, 21) is housed, that the exhaust gas guide is arranged in one plane and that a bypass exhaust gas path (32/8) to the exhaust gas heat exchanger element (6) is provided. 2. Abgaswärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß Einlaß (1) und Auslaß (2) an der Ober-und Unterseite fluchtend zueinander am Gehäuse (5) angeordnet sind.2. Exhaust gas heat exchanger according to claim 1, characterized in that inlet (1) and outlet (2) on the top and bottom are aligned with each other on the housing (5). 3. Abgaswärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß im Bereich des Einlasses (1) nach außen und gegenüber dem Wärmetauscherelement (6) eine Isolierung (7) vorgesehen ist.3. Exhaust gas heat exchanger according to claim 1 or 2, characterized in that an insulation (7) is provided in the region of the inlet (1) to the outside and with respect to the heat exchanger element (6). 4. Abgaswärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß im Zuge der Auslaßleitung, stromab des Wärmetauscherelementes (6), eine Isolierung (7) gegenüber dem Wärmetauscher element (6) vorgesehen ist.4. Exhaust gas heat exchanger according to one of claims 1 to 3, characterized in that in the course of the outlet line, downstream of the heat exchanger element (6), insulation (7) with respect to the heat exchanger element (6) is provided. 5. Der Abgaswärmetauscher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß unterhalb des Wärmetauscherelementes (6) eine Kondensatabführung (24, 38) angeordnet ist.5. The exhaust gas heat exchanger according to one of claims 1 to 4, characterized in that a condensate discharge (24, 38) is arranged below the heat exchanger element (6). 6. Abgaswärmetauscher nach Anspruch 5, dadurch gekennzeichnet, daß das vom Wärmetauscherelement (6) abtropfende Kondensat kreuzungsfrei zum Abgaseinlaß abgeführt ist.6. Exhaust gas heat exchanger according to claim 5, characterized in that the condensate dripping from the heat exchanger element (6) is discharged without crossing to the exhaust gas inlet. 7. Abgaswärmetauscher nach Anspruch 5, dadurch gekennzeichnet, daß die Kondensatabführung vom Abgaswärmetauscherelement (6) durch Lamellen (13, 23) gebildet ist, zwischen denen der Abgaseinlaß in Form von Kanälen (14, 15) vorgesehen ist.7. Exhaust gas heat exchanger according to claim 5, characterized is characterized in that the condensate discharge from the exhaust gas heat exchanger element (6) is formed by fins (13, 23), between which the exhaust gas inlet is provided in the form of channels (14, 15). 8. Abgaswärmetauscher nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein Einlaß für das Abgas zum Wärmetauscherelement (14, 15) durch eine Klappe (11) im Querschnitt gesteuert ist.8. Exhaust gas heat exchanger according to one of claims 1 to 7, characterized in that an inlet for the exhaust gas to the heat exchanger element (14, 15) is controlled by a flap (11) in cross section. 9. Abgaswärmetauscher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Kondensat vom Wärmetauscherelement im Gleichstrom zum Abgas abgeführt ist.9. Exhaust gas heat exchanger according to one of claims 1 to 8, characterized in that the condensate is discharged from the heat exchanger element in direct current to the exhaust gas.
EP81104401A 1980-06-12 1981-06-06 Heat exchanger for flue gases Expired EP0042129B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81104401T ATE8178T1 (en) 1980-06-12 1981-06-06 EXHAUST HEAT EXCHANGER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8015581U 1980-06-12
DE19808015581U DE8015581U1 (en) 1980-06-12 1980-06-12 EXHAUST GAS EXCHANGER

Publications (3)

Publication Number Publication Date
EP0042129A2 true EP0042129A2 (en) 1981-12-23
EP0042129A3 EP0042129A3 (en) 1982-08-25
EP0042129B1 EP0042129B1 (en) 1984-06-27

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ID=6716208

Family Applications (1)

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EP81104401A Expired EP0042129B1 (en) 1980-06-12 1981-06-06 Heat exchanger for flue gases

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EP (1) EP0042129B1 (en)
AT (1) ATE8178T1 (en)
DE (2) DE8015581U1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078207A2 (en) * 1981-10-22 1983-05-04 Chaffoteaux & Maury Apparatus for the recuperation of calories from flue gases of gas heaters
FR2532041A2 (en) * 1982-08-20 1984-02-24 Chaffoteaux Et Maury Improvements to devices for recovering heat from the fumes issuing from gas-fired boilers.
FR2581171A1 (en) * 1985-04-25 1986-10-31 Girard Bernard Device for recovering heat in a fume pipe
EP0236607A1 (en) * 1986-03-11 1987-09-16 Merrill K. Gordon Heat recovery apparatus and heat recovery method
CN110285702A (en) * 2019-06-15 2019-09-27 大唐郓城发电有限公司 A kind of thermal power plant waste-heat recovery device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103820167A (en) * 2012-11-16 2014-05-28 航天长征化学工程股份有限公司 Synthetic gas outlet device of gasification furnace

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813039A (en) * 1973-03-26 1974-05-28 G Wells Heat exchanger
US3913663A (en) * 1974-05-03 1975-10-21 Jack R Gates Energy conservation chamber
US4011904A (en) * 1974-04-02 1977-03-15 Hope Henry F Combination heat exchanger and blower
US4079888A (en) * 1975-04-18 1978-03-21 Briscoe Harry H Heat recovery system for forced air furnaces
NL7612508A (en) * 1976-11-10 1978-05-12 Veg Gasinstituut Nv Gas heating operating system - uses heat exchanger cooling combustion gases below dew point and has reheating layout
FR2426233A1 (en) * 1978-05-20 1979-12-14 Vaillant Sarl Fuelled heat source with burner - has flow protection device inner wall covered by steam generator body connected to discharge
LU81913A1 (en) * 1978-12-18 1980-04-22 Sevelen Metallbau POWER-CONTROLLED FINISHED PIECE ELEMENT WITH HEAT EXCHANGER ARRANGEMENT

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813039A (en) * 1973-03-26 1974-05-28 G Wells Heat exchanger
US4011904A (en) * 1974-04-02 1977-03-15 Hope Henry F Combination heat exchanger and blower
US3913663A (en) * 1974-05-03 1975-10-21 Jack R Gates Energy conservation chamber
US4079888A (en) * 1975-04-18 1978-03-21 Briscoe Harry H Heat recovery system for forced air furnaces
NL7612508A (en) * 1976-11-10 1978-05-12 Veg Gasinstituut Nv Gas heating operating system - uses heat exchanger cooling combustion gases below dew point and has reheating layout
FR2426233A1 (en) * 1978-05-20 1979-12-14 Vaillant Sarl Fuelled heat source with burner - has flow protection device inner wall covered by steam generator body connected to discharge
LU81913A1 (en) * 1978-12-18 1980-04-22 Sevelen Metallbau POWER-CONTROLLED FINISHED PIECE ELEMENT WITH HEAT EXCHANGER ARRANGEMENT

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078207A2 (en) * 1981-10-22 1983-05-04 Chaffoteaux & Maury Apparatus for the recuperation of calories from flue gases of gas heaters
EP0078207A3 (en) * 1981-10-22 1983-06-29 Chaffoteaux & Maury Apparatus for the recuperation of calories from flue gases of gas heaters
FR2532041A2 (en) * 1982-08-20 1984-02-24 Chaffoteaux Et Maury Improvements to devices for recovering heat from the fumes issuing from gas-fired boilers.
FR2581171A1 (en) * 1985-04-25 1986-10-31 Girard Bernard Device for recovering heat in a fume pipe
EP0236607A1 (en) * 1986-03-11 1987-09-16 Merrill K. Gordon Heat recovery apparatus and heat recovery method
CN110285702A (en) * 2019-06-15 2019-09-27 大唐郓城发电有限公司 A kind of thermal power plant waste-heat recovery device

Also Published As

Publication number Publication date
DE3164413D1 (en) 1984-08-02
DE8015581U1 (en) 1982-01-28
EP0042129A3 (en) 1982-08-25
ATE8178T1 (en) 1984-07-15
EP0042129B1 (en) 1984-06-27

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