EP1624270B1 - Heat cell for a heating apparatus - Google Patents

Heat cell for a heating apparatus Download PDF

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Publication number
EP1624270B1
EP1624270B1 EP05015400.4A EP05015400A EP1624270B1 EP 1624270 B1 EP1624270 B1 EP 1624270B1 EP 05015400 A EP05015400 A EP 05015400A EP 1624270 B1 EP1624270 B1 EP 1624270B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plates
burner
primary heat
exhaust gas
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.)
Not-in-force
Application number
EP05015400.4A
Other languages
German (de)
French (fr)
Other versions
EP1624270A1 (en
Inventor
Walter Bornscheuer
Michael Bremicker
Frank Söhnchen
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.)
Vaillant GmbH
Original Assignee
Vaillant 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 Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP1624270A1 publication Critical patent/EP1624270A1/en
Application granted granted Critical
Publication of EP1624270B1 publication Critical patent/EP1624270B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/30—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections
    • F24H1/32—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections with vertical sections arranged side by side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/38—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water contained in separate elements, e.g. radiator-type element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction

Definitions

  • the invention relates to a heat cell for a heater with a powered by a fuel-air mixture burner and a primary heat exchanger for transmitting thermal energy of the exhaust gas of the burner to heating or service water.
  • the primary heat exchanger often consists of a coiled tubing.
  • a coil is from the EP 745 813 A2 known.
  • a flattened tube is bent into a helix, wherein the tube has indentations, which serve as spacers to maintain a defined gap.
  • the EP 1279 903 A discloses a heat exchanger having a plurality of coaxial coils which are flowed through in series, with the innermost connected to the heating flow and the outermost to the heating return.
  • Out GB 1 357 137 A a heat exchanger is known, which has water channels of two composite plates.
  • Each plate has a meandering channel on the front and back, the meandering channels forming bypasses at their intersections.
  • Out GB 1 277 872 A A boiler with a burner and a lying above the combustion chamber heat exchanger made of assembled sheet metal plates with embossed water channels.
  • the WO 03/106909 A2 discloses a heat exchanger made of sheet metal plates each composed of water channels, which form a cylinder which is flowed through radially.
  • the invention has for its object to provide a heat cell whose primary heat exchanger is characterized by simple structure.
  • a heat cell characterized in that the primary heat exchanger is designed as a plate heat exchanger, wherein each two molded plates form a water channel in the assembled state. Heat exchangers, insulation boards and burners form the combustion chamber. According to the features of the dependent claim 2 there is the advantage that the water channels are divided within the plates, whereby a higher flow velocity and thus a better heat transfer are enforced.
  • the spacers are embossed part of the plates.
  • the gap tapers in the flow direction, primarily to cope with the cooling of the exhaust gas. This is in FIG. 6 shown.
  • FIG. 1 shows a heat cell 1 with a housing 4, a powered by a fan 11 with a fuel gas-air mixture burner 2 and a primary heat exchanger 3. Between the burner 2 and primary heat exchanger 3 is the combustion chamber 5.
  • the primary heat exchanger 3 consists of plates 10, which have a connection for a return 6 and a flow 7. Indentations 18 divide the watercourse of the primary heat exchanger 3. Furthermore, the plates 10 have embossed spacers 8.
  • the housing 4 has an exhaust pipe connection 9. In operation, the exhaust gases 13 of the burner 2 flow through the combustion chamber 5 and then the primary heat exchanger 3 and thereby give their thermal Energy to the water flow 14 within the primary heat exchanger 3 from. The cooled exhaust gases flow through the housing 4 into the exhaust gas line connection 9.
  • FIG. 2 shows a plate 10 including the position of two sections A - A and B - B.
  • FIG. 3 shows a section through the primary heat exchanger 3.
  • two plates 10 form water channels 17.
  • the impressed spacers 8 defined gaps 16 are formed, through which the exhaust gases of the burner 2 can flow.
  • the water channels 17 are divided by the impressions 18.
  • copper foils are used, which melt in an oven and thus contribute to a positive connection.
  • FIG. 4 shows a different section through the heat cell 1.
  • the water channels 17 of the primary heat exchanger 3 are connected to the return line 6 and the supply line 7 in parallel.
  • the water channel 17, which is connected first to the return line 6, is connected on the forward side as the last.
  • all water channels 17 are traversed evenly with the same pressure loss.
  • the combustion chamber 5 is further limited to the housing 4 via insulation boards 12.
  • FIG. 5 shows a primary heat exchanger 3 according to the invention in section with differently shaped plates 10, wherein it is particularly conspicuous in comparison to the other variants that the composite plates 10 are not identical.
  • FIG. 6 shows a primary heat exchanger 3 according to the invention with columns 16, which become narrower in the flow direction of the exhaust gas. Since the exhaust gas is cooled in the heat exchanger 3 and therefore has a higher density; Thus, the flow rate is lower, and further increases the heat exchanger to the outside of its cross-sectional area, thus, the flow rate can be increased to allow a high heat transfer.
  • FIG. 7 shows a plate 7 with dome-shaped inner contour.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Fuel Cell (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Description

Die Erfindung bezieht sich auf eine Wärmezelle für ein Heizgerät mit einem von einem Brennstoff-Luft-Gemisch gespeisten Brenner und einem Primärwärmeaustauscher zur Übertragung thermischer Energie des Abgases des Brenners auf Heiz- oder Brauchwasser.The invention relates to a heat cell for a heater with a powered by a fuel-air mixture burner and a primary heat exchanger for transmitting thermal energy of the exhaust gas of the burner to heating or service water.

Derartige Wärmezellen werden seit Jahren in der Großserie eingesetzt. Hierbei besteht der Primärwärmeaustauscher häufig aus einer Rohrwendel. Eine derartige Wendel ist aus der EP 745 813 A2 bekannt. Bei einer gängigen aus der FR 2 700 608 A1 bekannten Ausführungsform wird ein abgeflachtes Rohr zu einer Wendel gebogen, wobei das Rohr über Einprägungen verfügt, welche als Abstandshalter zur Einhaltung eines definierten Spaltes dienen. Die EP 1279 903 A offenbart einen Wärmetauscher mit mehreren koaxialen Wendeln, welche in Reihe durchströmt werden, wobei die innerste mit dem Heizungsvorlauf und die äußerste mit dem Heizungsrücklauf verbunden ist. Aus GB 1 357 137 A ist ein Wärmetauscher bekannt, welcher Wasserkanäle aus zwei zusammengesetzten Platten aufweist. Jede Platte weist auf der Vorder- und Rückseite einen mäanderförmigen Kanal auf, wobei die mäanderförmigen Kanäle an ihren Überschneidungen Bypässe bilden. Aus GB 1 277 872 A geht ein Heizkessel mit einem Brenner und einem über dem Brennraum liegenden Wärmetauscher aus zusammengefügten Blechplatten mit eingeprägten Wasserkanälen hervor. Die WO 03/106909 A2 offenbart einen Wärmetauscher aus jeweils zu Wasserkanälen zusammengesetzten Blechplatten, welche einen Zylinder bilden, der radial durchströmt wird.Such heat cells are used for years in mass production. Here, the primary heat exchanger often consists of a coiled tubing. Such a coil is from the EP 745 813 A2 known. In a common from the FR 2 700 608 A1 known embodiment, a flattened tube is bent into a helix, wherein the tube has indentations, which serve as spacers to maintain a defined gap. The EP 1279 903 A discloses a heat exchanger having a plurality of coaxial coils which are flowed through in series, with the innermost connected to the heating flow and the outermost to the heating return. Out GB 1 357 137 A a heat exchanger is known, which has water channels of two composite plates. Each plate has a meandering channel on the front and back, the meandering channels forming bypasses at their intersections. Out GB 1 277 872 A A boiler with a burner and a lying above the combustion chamber heat exchanger made of assembled sheet metal plates with embossed water channels. The WO 03/106909 A2 discloses a heat exchanger made of sheet metal plates each composed of water channels, which form a cylinder which is flowed through radially.

Der Erfindung liegt die Aufgabe zugrunde, eine Wärmezelle zu schaffen, deren Primärwärmetauscher sich durch einfachen Aufbau auszeichnet.The invention has for its object to provide a heat cell whose primary heat exchanger is characterized by simple structure.

Erfindungsgemäß wird dies bei einer Wärmezelle gemäß den Merkmalen des unabhängigen Anspruchs dadurch erreicht, dass der Primärwärmeaustauscher als Plattenwärmeaustauscher ausgebildet ist, wobei jeweils zwei geformte Platten im zusammengesetzten Zustand einen Wasserkanal bilden. Wärmeaustauscher, Dämmplatten und Brenner bilden den Brennraum. Gemäß den Merkmalen des abhängigen Anspruchs 2 ergibt sich der Vorteil, dass die Wasserkanäle innerhalb der Platten unterteilt sind, wodurch eine höhere Strömungsgeschwindigkeit und somit ein besserer Wärmeübergang erzwungen werden.According to the invention this is achieved in a heat cell according to the features of the independent claim, characterized in that the primary heat exchanger is designed as a plate heat exchanger, wherein each two molded plates form a water channel in the assembled state. Heat exchangers, insulation boards and burners form the combustion chamber. According to the features of the dependent claim 2 there is the advantage that the water channels are divided within the plates, whereby a higher flow velocity and thus a better heat transfer are enforced.

Gemäß den Merkmalen des abhängigen Anspruchs 3 ergibt sich der Vorteil, dass die Druckverluste minimiert werden können.According to the features of the dependent claim 3 there is the advantage that the pressure losses can be minimized.

Gemäß den Merkmalen des abhängigen Anspruchs 4 ergibt sich der Vorteil, dass die heißen Abgase zunächst mit dem vorgewärmten Wasser in Berührung kommen, ehe die abgekühlten Abgase mit dem relativ kalten Rücklauf in Berührung kommen.According to the features of the dependent claim 4 there is the advantage that the hot exhaust gases first come into contact with the preheated water before the cooled exhaust gases come into contact with the relatively cold return.

Gemäß den Merkmalen des abhängigen Anspruchs 5 ergibt sich der Vorteil, dass der Spalt zwischen zwei Wasserläufen definierten Abstand besitzt.According to the features of the dependent claim 5 there is the advantage that the gap between two watercourses has defined distance.

Gemäß den Merkmalen des abhängigen Anspruchs 6 sind die Abstandshalter eingepräger Bestandteil der Platten.According to the features of dependent claim 6, the spacers are embossed part of the plates.

Gemäß den Merkmalen des abhängigen Anspruchs 7 verjüngt sich der Spalt in Strömungsrichtung, vornehmlich, um der Abkühlung des Abgases gerecht zu werden. Dies ist in Figur 6 dargestellt.According to the features of dependent claim 7, the gap tapers in the flow direction, primarily to cope with the cooling of the exhaust gas. This is in FIG. 6 shown.

Die Erfindung wird nun anhand der Zeichnungen detailliert erläutert. Es zeigen

  • Figur 1 eine erfindungsgemäße Wärmezelle im Schnitt,
  • Figur 2 eine Platte eines Primärwärmeaustauschers in der Draufsicht,
  • Figur 3 den Primärwärmeaustauscher in einem Schnitt,
  • Figur 4 die Wärmezelle in einem anderen Schnitt,
  • Figur 5 eine alternative Bauform des erfindungsgemäßen Wärmeaustauschers
  • Figur 6 ein Wärmeaustauscher mit sich verjüngendem Spalt sowie
  • Figur 7 eine besondere Bauform einer Wärmeaustauscherplatte.
The invention will now be explained in detail with reference to the drawings. Show it
  • FIG. 1 a heat cell according to the invention in section,
  • FIG. 2 a plate of a primary heat exchanger in plan view,
  • FIG. 3 the primary heat exchanger in one cut,
  • FIG. 4 the heat cell in another cut,
  • FIG. 5 an alternative design of the heat exchanger according to the invention
  • FIG. 6 a heat exchanger with tapered gap as well
  • FIG. 7 a special design of a heat exchanger plate.

Figur 1 zeigt eine Wärmezelle 1 mit einem Gehäuse 4, einem von einem Gebläse 11 mit einem Brenngas-Luft-Gemisch gespeisten Brenner 2 sowie einen Primärwärmeaustauscher 3. Zwischen Brenner 2 und Primärwärmeaustauscher 3 befindet sich die Brennkammer 5. Der Primärwärmeaustauscher 3 besteht aus Platten 10, welche über einen Anschluss für einen Rücklauf 6 und einen Vorlauf 7 verfügen. Einprägungen 18 unterteilen den Wasserlauf des Primärwärmeaustauschers 3. Ferner verfügen die Platten 10 über eingeprägte Abstandshalter 8. Das Gehäuse 4 verfügt über einen Abgasleitungsanschluss 9. Im Betrieb durchströmen die Abgase 13 des Brenners 2 den Brennraum 5 und anschließend den Primärwärmeaustauscher 3 und geben hierbei ihre thermische Energie an den Wasserstrom 14 innerhalb des Primärwärmeaustauschers 3 ab. Die abgekühlten Abgase strömen durch das Gehäuse 4 in den Abgasleitungsanschluss 9. FIG. 1 shows a heat cell 1 with a housing 4, a powered by a fan 11 with a fuel gas-air mixture burner 2 and a primary heat exchanger 3. Between the burner 2 and primary heat exchanger 3 is the combustion chamber 5. The primary heat exchanger 3 consists of plates 10, which have a connection for a return 6 and a flow 7. Indentations 18 divide the watercourse of the primary heat exchanger 3. Furthermore, the plates 10 have embossed spacers 8. The housing 4 has an exhaust pipe connection 9. In operation, the exhaust gases 13 of the burner 2 flow through the combustion chamber 5 and then the primary heat exchanger 3 and thereby give their thermal Energy to the water flow 14 within the primary heat exchanger 3 from. The cooled exhaust gases flow through the housing 4 into the exhaust gas line connection 9.

Figur 2 zeigt eine Platte 10 inklusive der Position zweier Schnitte A - A bzw. B - B. FIG. 2 shows a plate 10 including the position of two sections A - A and B - B.

Figur 3 zeigt einen Schnitt durch den Primärwärmeaustauscher 3. Jeweils zwei Platten 10 bilden Wasserkanäle 17. Durch die eingeprägten Abstandshalter 8 werden definierte Spalte 16 gebildet, durch welche die Abgase des Brenners 2 strömen können. Die Wasserkanäle 17 sind durch die Einprägungen 18 unterteilt. Nicht dargestellt sind Dichtmittel zwischen den Berührungsstellen der Einprägungen 18. Hierzu können beispielsweise Kupferfolien dienen, welche in einem Ofen zerschmelzen und somit zu einer formschlüssigen Verbindung beitragen. FIG. 3 shows a section through the primary heat exchanger 3. In each case two plates 10 form water channels 17. By the impressed spacers 8 defined gaps 16 are formed, through which the exhaust gases of the burner 2 can flow. The water channels 17 are divided by the impressions 18. Not shown are sealing means between the points of contact of the indentations 18. For this purpose, for example copper foils are used, which melt in an oven and thus contribute to a positive connection.

Figur 4 zeigt einen anderen Schnitt durch die Wärmezelle 1. Die Wasserkanäle 17 des Primärwärmeaustauschers 3 sind an den Rücklauf 6 und den Vorlauf 7 jeweils parallel angeschlossen. Bei der dargestellten Anschlussform ergibt sich der Vorteil, dass der Wasserkanal 17, welcher als erstes an den Rücklauf 6 angeschlossen ist, auf der Vorlaufseite als letztes angeschlossen ist. Somit werden alle Wasserkanäle 17 gleichmäßig mit gleichem Druckverlust durchströmt. Die Brennkammer 5 wird ferner über Dämmplatten 12 zum Gehäuse 4 begrenzt. FIG. 4 shows a different section through the heat cell 1. The water channels 17 of the primary heat exchanger 3 are connected to the return line 6 and the supply line 7 in parallel. In the illustrated connection form, there is the advantage that the water channel 17, which is connected first to the return line 6, is connected on the forward side as the last. Thus, all water channels 17 are traversed evenly with the same pressure loss. The combustion chamber 5 is further limited to the housing 4 via insulation boards 12.

Figur 5 zeigt einen erfindungsgemäßen Primärwärmeaustauscher 3 im Schnitt mit anders gestalteten Platten 10, wobei besonders auffällig im Vergleich zur anderen Varianten ist, dass die zusammengesetzten Platten 10 nicht identisch sind. FIG. 5 shows a primary heat exchanger 3 according to the invention in section with differently shaped plates 10, wherein it is particularly conspicuous in comparison to the other variants that the composite plates 10 are not identical.

Figur 6 zeigt einen erfindungsgemäßen Primärwärmeaustauscher 3 mit Spalten 16, welche in Strömungsrichtung des Abgases schmaler werden. Da das Abgas im Wärmeaustauscher 3 abgekühlt wird und demnach eine höhere Dichte aufweist; der Volumenstrom also geringer wird, und ferner der Wärmeaustauscher nach außen seine Querschnittsfläche erhöht, kann somit die Strömungsgeschwindigkeit erhöht werden, um einen hohen Wärmeübergang zu ermöglichen. FIG. 6 shows a primary heat exchanger 3 according to the invention with columns 16, which become narrower in the flow direction of the exhaust gas. Since the exhaust gas is cooled in the heat exchanger 3 and therefore has a higher density; Thus, the flow rate is lower, and further increases the heat exchanger to the outside of its cross-sectional area, thus, the flow rate can be increased to allow a high heat transfer.

Figur 7 zeigt eine Platte 7 mit kuppelförmiger Innenkontur. FIG. 7 shows a plate 7 with dome-shaped inner contour.

Claims (7)

  1. Heating cell (1) for a heating device having a burner (2) which is supplied by a fuel/air mixture, a primary heat exchanger (3) to transfer thermal energy of the exhaust gas of the burner (2) into heating water or industrial water, wherein the burner (2) and the primary heat exchanger (3) are arranged in a housing (4) in such a way that the exhaust gas of the burner (2) flows during operation of the primary heat exchanger (3), wherein the primary heat exchanger (3) is formed as a plate heat exchanger, two profiled plates (10) each form a water channel (17) of the primary heat exchanger (3) in the assembled state and exhaust gas of the burner (2) flows through gaps (16) between the plates (10) of two adjacent water channels (17), characterised in that the plates (10) have a U-shaped, crescent-shaped or dome-shaped inner profile and as such, together with the burner (2) and additional insulation panels (12), delimit the combustion chamber (5).
  2. Heating cell (1) according to claim 1, characterised in that the plates (10) have imprints (18) which divide the water channels (17).
  3. Heating cell (1) according to claim 1 or 2, characterised in that the water channels (17) of the primary heat exchanger (3) are flowed through in parallel from the return pipe (6) to the flow pipe (7).
  4. Heating cell (1) according to claim 3, characterised in that the exhaust gases of the burner (2) firstly flood the water channels (17) which flow into the flow pipe (7), and then the water channels (17) which are connected to the return pipe (6).
  5. Heating cell (1) according to one of claims 1 to 4, characterised in that the plates (10) have spacers (8) to maintain a defined gap (16).
  6. Heating cell (1) according to claim 5, characterised in that the spacers (8) are impressed into the plates (10).
  7. Heating cell (1) according to one of claims 1 to 6, characterised in that the plates (10) are formed in such a way that the gaps (16) become narrower for the exhaust gas in the flow direction of the exhaust gas.
EP05015400.4A 2004-08-06 2005-07-15 Heat cell for a heating apparatus Not-in-force EP1624270B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004038562 2004-08-06
AT4232005 2005-03-14

Publications (2)

Publication Number Publication Date
EP1624270A1 EP1624270A1 (en) 2006-02-08
EP1624270B1 true EP1624270B1 (en) 2015-09-02

Family

ID=35198047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05015400.4A Not-in-force EP1624270B1 (en) 2004-08-06 2005-07-15 Heat cell for a heating apparatus

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EP (1) EP1624270B1 (en)
DE (1) DE102005033050A1 (en)
ES (1) ES2554508T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1933101A3 (en) 2006-12-08 2012-09-05 Vaillant GmbH Heat exchanger with combustion chamber
CN101245947B (en) * 2007-11-30 2010-05-19 华南理工大学 Heat converter of plate-type gas water heater
DE102008039403A1 (en) * 2008-08-22 2010-02-25 Robert Bosch Gmbh heater
ITBO20130632A1 (en) 2013-11-20 2015-05-21 Gas Point S R L PLATE HEAT EXCHANGER, IN PARTICULAR FOR CONDENSING BOILERS

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1277872A (en) * 1968-06-06 1972-06-14 Delaney Gallay Ltd Improvements in and relating to heat exchangers
BE751028A (en) * 1970-05-27 1970-11-03 Defawes Ets Thomas BOILER,
EP0745813A3 (en) * 1995-05-31 1997-12-29 VIESSMANN WERKE GmbH & CO. Heat exchanger, especially for a boiler
DE10136441A1 (en) * 2001-07-26 2003-02-13 Bosch Gmbh Robert Heat exchanger for a gas heater, especially a condensing boiler
ITMO20020163A1 (en) * 2002-06-13 2003-12-15 Worgas Bruciatori Srl HEAT EXCHANGER

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Publication number Publication date
DE102005033050A1 (en) 2006-03-16
EP1624270A1 (en) 2006-02-08
ES2554508T3 (en) 2015-12-21

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