WO2007104271A1 - Combined heating/warm water system for mobile applications - Google Patents

Combined heating/warm water system for mobile applications Download PDF

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Publication number
WO2007104271A1
WO2007104271A1 PCT/DE2006/002278 DE2006002278W WO2007104271A1 WO 2007104271 A1 WO2007104271 A1 WO 2007104271A1 DE 2006002278 W DE2006002278 W DE 2006002278W WO 2007104271 A1 WO2007104271 A1 WO 2007104271A1
Authority
WO
WIPO (PCT)
Prior art keywords
hot water
combustion air
air
water system
combustion
Prior art date
Application number
PCT/DE2006/002278
Other languages
German (de)
French (fr)
Inventor
Alessandro Fiumidinisi
Original Assignee
Webasto Ag
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 Webasto Ag filed Critical Webasto Ag
Priority to CA002645270A priority Critical patent/CA2645270A1/en
Priority to US12/281,483 priority patent/US20090008465A1/en
Priority to DE202006020902U priority patent/DE202006020902U1/en
Priority to EP06828707A priority patent/EP1993865A1/en
Priority to CN2006800538499A priority patent/CN101400530B/en
Priority to JP2008558628A priority patent/JP4953104B2/en
Publication of WO2007104271A1 publication Critical patent/WO2007104271A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/404—Flame tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/001—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space spraying nozzle combined with forced draft fan in one unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • 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
    • F24H6/00—Combined water and air heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2281—Air supply, exhaust systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/04—Gas or oil fired boiler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F24H1/263—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body with a dry-wall combustion chamber

Definitions

  • the invention relates to a combined heating / hot water system for mobile applications.
  • Such a combined heating / hot water system for mobile applications is known for example from DE 297 22 802 Ul.
  • a burner is arranged in a recess of a hot water tank, wherein the hot water tank is substantially hollow cylindrical and the burner is substantially cylindrical.
  • the burner and the hot water tank are thermally coupled with each other. This can be provided by means of a burner energy for both the heating system and, for the hot water system.
  • the object of the invention is to provide a combined heating / hot water system for mobile applications, which is reliable, well adaptable to given space and is inexpensive to produce.
  • the combined heating / hot water system for mobile applications is characterized by a hot water tank with a recess, and arranged in the recess of the hot water tank burner for the combustion of liquid or gaseous fuels, the burner is thermally coupled to the hot water tank and a combustion air supply wherein the BrennluftzuGermane- device having an air guide device with an air inlet opening, a first air outlet opening and a second air outlet opening, and the first air outlet opening is arranged so that the Brennluftzu slaughterhorn is cooled and the second air outlet opening is arranged so that the burner combustion air can be supplied.
  • the air guiding device makes it possible, by means of a first air flow between the air inlet opening and the first air outlet opening, to guide air through the combustion air feed device in such a way that it can be cooled.
  • a second air flow between the air inlet opening and the second air outlet opening of the burner combustion air can be supplied.
  • the Brenn Kunststoffzu classroom With a cooling air fan.
  • active cooling of the combustion air supply device is also possible if the heating / hot water system is idle. stands. This can be effectively counteracted overheating the Brennluftzu Swissein- direction.
  • the Brenn Kunststoffzu semiconductor leverages a combustion air fan and a combustion air duct, and the combustion air duct is arranged so that the combustion air to the burner, bypassing the cooling air fan can be supplied.
  • the BrennSISzu semiconductor drives a combustion air fan and the combustion air fan and thedeluftventiIa- • tor are driven by a common drive device.
  • the BrennSISzu classroom leverages a shielding, which is arranged on a side facing the hot water tank side of the Brennluftzu900 with the thermal coupling between the combustion air supply and hot water storage is reduced. This makes it possible to reduce the heat flow from the hot water tank to the combustion air supply by a passive acting component.
  • the shielding element made of aluminum.
  • the shielding element consists of a magnesium-aluminum alloy. This has the advantage that aluminum and magnesium-aluminum alloys allow a low weight of the shielding. Furthermore, the shielding element can be manufactured as a cast part and be connected in a simple manner to other components made of aluminum or aluminum alloys.
  • FIG. 1 shows a schematic view of a first embodiment of the combined heating / hot water system for mobile applications in a longitudinal section
  • FIG. 2 shows a schematic view of a second embodiment of the combined heating / hot water system for mobile applications in a longitudinal section
  • FIG. 4 shows a cross section through the combined heating / hot water system along the line IV-IV of FIG. 1.
  • the figures show a combined heating / hot water system 10 for mobile applications with a hot water tank 12 having a recess 14.
  • the hot water tank 12 is preferably formed as a hollow cylinder, but may also have a different geometry.
  • a burner 16 is arranged in the recess 14 of the hot water tank 12.
  • the burner 16 has at its center a combustion chamber 42 and coaxially around it a fuel gas channel 44 is arranged. Tiber the fuel gas passage 44 and a fuel gas outlet opening 46, the fuel gas can be discharged to the environment.
  • the heat exchanger 17 is preferably made of aluminum or an aluminum alloy. Via a heating medium inlet opening 48, a heating medium can enter into the recess 14 of the hot water tank 12 and pass through the heat exchanger 17 with the heat exchanger fins 17 a to a Schumediumaustrittsö Anlagen 50.
  • the heating medium is preferably air, but may also be water, optionally in combination with an antifreeze.
  • the burner 16 has a Brennluftzucited adopted 18 and a Brennstoffzukind sensible 19.
  • the combustion air supply device 18 has an air guiding device 28.
  • the air guiding device 28 has an air inlet opening 20, a first air outlet opening 22 and a second air outlet opening 24.
  • a cooling air fan 30 arranged in the air guiding device 28 is near at least some of the air inlet openings 20, a cooling air fan 30 arranged. With the cooling air fan 30 supply air 36 can be introduced from the outside into the air guiding device 28.
  • the combustion air supply device 18 furthermore has a combustion air ventilator 27, by means of which combustion air 37 can be supplied to the burner 16 via a combustion air duct 26.
  • the combustion air 3'7 can preferably be introduced into the combustion air supply device 18 either directly via the air inlet opening 20 (FIG. 1) or via the air inlet opening 20 and the cooling air fan 30 (FIG. 2).
  • Another part of the air flow which is introduced into the air guiding device 28 by the cooling air ventilator 30, preferably flows around the combustion air duct 26 as cooling air 38 and returns to the environment via the first air outlet opening 22 as outgoing air 39.
  • combustion air fan 27 and the cooling air fan 30 are preferably arranged on a common axis 31, which is preferably drivable by a common drive device 32.
  • combustion air fan 27 and cooling air fan 30 may also be driven by separate drive devices.
  • the combustion air supply device 18 further has a shielding element 34.
  • This is .auf a hot water tank 12 and the heat exchanger 17 facing side of the combustion air supply 18 arranged.
  • the shielding member 34 is preferably made of aluminum or a magnesium-aluminum alloy.
  • In the executed as a solid component shielding member 34 may, in particular heat, which is discharged onto the the 'Brenn Kunststoffzu slaughterfish Skelethorn Road 18 facing side of the hot water storage tank 12 and the heat exchanger 17, be recorded. It is thus possible to buffer the peak heat quantities occurring in the hot water storage tank 12 and heat exchanger 17 in such a way that the heat energy can not reach the remaining areas of the combustion air supply unit 18 directly.
  • Supply air 36 is introduced via the air inlet opening 20 into the Brennbuchzu111 boots 18 and is distributed there in the direction of the first air outlet opening 22 and the second air outlet opening 24.
  • the passing through the second air outlet opening 24 of the Brennluftzu slaughter 18 combustion air 37 is supplied by the combustion air fan 27 of the combustion chamber 42 , Via the Brennstoffzu1700- device 19 is preferably liquid fuel, as it is also used to drive the vehicle, the combustion chamber 42 and burned there by means of the combustion air 37.
  • gaseous fuel can also be used instead of the liquid fuel.
  • the resulting fuel gas is conducted via the fuel gas channel 44 and the fuel gas outlet opening 46 as exhaust gas 40 to the outside.
  • a heating medium preferably air
  • the heating medium is heated in the recess 14 of the hot water storage tank 12, in particular in the region of the heat exchanger 17 with the heat exchanger fins 17 a, and exits the recess 14 at the heating medium outlet opening 50.
  • the heating medium can then be fed to a heat consumer, preferably one, by means of a heating medium control system (not further shown) Air heating or a water heater of a camping vehicle, a motorhome or a watercraft, are supplied.
  • the part of the supply air 36 which is supplied to the first air outlet opening 22, flows around as cooling air 38, in particular the combustion air duct 26 and the shielding element 34 and can cool them so.
  • the shielding element 34 can be used as a buffer element for the thermal energy flowing from the heat exchanger 17 to the combustion air supply device 18.
  • the cooling air fan 30 can be put into operation via a suitable control device and supply air 36 can be guided via the air inlet opening 20 to the first air outlet opening 22, wherein the cooling air 38 can cool the combustion air supply device 18. This makes it possible to effectively protect parts of the combustion air supply device 18, which are sensitive to high temperatures, from the heat load by means of the cooling air fan 30 and the air guiding device 28.

Abstract

Combined heating/warm water system (10) for mobile applications, having a warm water accumulator (12) with a recess (14), and a burner (16) which is arranged in the recess (14) of the warm water accumulator (16) for the combustion of fluid and gaseous fuels, wherein the burner (16) is coupled thermally to the warm water accumulator (12) and has a combustion air supplying device (18), wherein the combustion air supplying device (18) has an air guiding apparatus (28) having an air inlet opening (20), a first air outlet opening (22) and a second air outlet opening (24), and the first air outlet opening (22) is arranged in such a way that the combustion air feeding device (18) can be cooled and the second air outlet opening (24) is arranged in such a way that combustion air can be fed to the burner (16).

Description

Beschreibungdescription
Kombiniertes Heizungs-/Warmwassersystem für mobile AnwendungenCombined heating / hot water system for mobile applications
Die Erfindung betrifft ein kombiniertes Heizungs-/Warmwasser- system für mobile Anwendungen.The invention relates to a combined heating / hot water system for mobile applications.
Ein solches kombiniertes Heizungs- /Warmwassersystem für mobile Anwendungen ist beispielsweise aus der DE 297 22 802 Ul bekannt. Ein Brenner ist in einer Ausnehmung eines Warmwasserspeichers angeordnet, wobei der Warmwasserspeicher im Wesentlichen hohlzylinderförmig und der Brenner im Wesentlichen zylinderförmig ist. Der Brenner und der Warmwasserspeicher sind thermisch miteinander gekoppelt. Damit kann mittels eines Brenners Energie sowohl für das Heizungssystem als auch, für das Warmwassersystem bereitgestellt werden.Such a combined heating / hot water system for mobile applications is known for example from DE 297 22 802 Ul. A burner is arranged in a recess of a hot water tank, wherein the hot water tank is substantially hollow cylindrical and the burner is substantially cylindrical. The burner and the hot water tank are thermally coupled with each other. This can be provided by means of a burner energy for both the heating system and, for the hot water system.
Es ist wünschenswert, derartige kombinierte Heizungs- /Warmwassersysteme weiter zu verbessern, um sie unter den begrenzten Raumverhältnissen, wie sie beispielsweise in Kraftfahrzeugen, insbesondere in Wohnmobilen oder anderen Campingfahrzeugen sowie in Wasserfahrzeugen bestehen, einzusetzen.It is desirable to further improve such combined heating / hot water systems in order to use them in the limited space conditions, such as in motor vehicles, especially in motorhomes or other camping vehicles and in watercraft.
Die Aufgabe der Erfindung ist es, ein kombiniertes Heizungs- /Warmwassersystem für mobile Anwendungen zu schaffen, das betriebssicher ist, gut an vorgegebene Raumverhältnisse anpassbar ist und kostengünstig herstellbar ist.The object of the invention is to provide a combined heating / hot water system for mobile applications, which is reliable, well adaptable to given space and is inexpensive to produce.
Die Aufgabe wird gelöst durch die Merkmale der unabhängigen Patentansprüche. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet. __ pThe object is solved by the features of the independent claims. Advantageous developments of the invention are characterized in the subclaims. __ p
Das kombinierte Heizungs-/Warmwassersystem für mobile Anwendungen zeichnet sich aus durch einen Warmwasserspeicher mit einer Ausnehmung, und einen in der Ausnehmung des Warmwasserspeichers angeordneten Brenner für die Verbrennung flüssiger oder gasförmiger Brennstoffe, wobei der Brenner thermisch mit dem Warmwasserspeicher gekoppelt ist und eine Brennluftzu- führeinrichtung aufweist, wobei die Brennluftzuführeinrich- tung eine Luftleitvorrichtung mit einer Lufteintrittsöffnung, einer ersten Luftaustrittsöffnung und einer zweiten Luftaustrittsöffnung aufweist, und die erste Luftaustrittsöffnung so angeordnet ist, dass die Brennluftzuführeinrichtung kühlbar ist und die zweite Luftaustrittsöffnung so angeordnet ist, dass dem Brenner Brennluft zuführbar ist.The combined heating / hot water system for mobile applications is characterized by a hot water tank with a recess, and arranged in the recess of the hot water tank burner for the combustion of liquid or gaseous fuels, the burner is thermally coupled to the hot water tank and a combustion air supply wherein the Brennluftzuführe- device having an air guide device with an air inlet opening, a first air outlet opening and a second air outlet opening, and the first air outlet opening is arranged so that the Brennluftzuführeinrichtung is cooled and the second air outlet opening is arranged so that the burner combustion air can be supplied.
Die Luftleitvorrichtung ermöglicht es, mittels einer ersten Luftströmung zwischen der Lufteintrittsöffnung und der ersten Luftaustrittsδffnung Luft so durch die Brennluftzuführeinrichtung zu führen, dass diese gekühlt werden kann. Mittels einer zweiten Luftströmung zwischen der Lufteintrittsöffnung und der zweiten Luftaustrittsöffnung kann dem Brenner Brennluft zugeführt werden.The air guiding device makes it possible, by means of a first air flow between the air inlet opening and the first air outlet opening, to guide air through the combustion air feed device in such a way that it can be cooled. By means of a second air flow between the air inlet opening and the second air outlet opening of the burner combustion air can be supplied.
Damit kann sichergestellt werden, dass eine Kühlung der Brennluftzuführeinrichtung auch dann möglich ist, wenn das Heizungs-/Warmwassersystem stillsteht, so lange über die Brennluftzuführeinrichtung Luft von der Lufteintrittsöffnung zur ersten Luftaustrittsöffnung strömen kann..It can thus be ensured that cooling of the combustion air supply device is also possible when the heating / hot water system is stationary, as long as air can flow from the air inlet opening to the first air outlet opening via the combustion air supply device.
In einer vorteilhaften Ausgestaltung der Erfindung weist die Brennluftzuführeinrichtung einen Kühlluftventilator auf. Damit ist eine aktive Kühlung der Brennluftzuführeinrichtung auch dann möglich, wenn das Heizungs-/Warmwassersystem still- steht. Damit kann einer Überhitzung der Brennluftzuführein- richtung wirkungsvoll entgegengewirkt werden.In an advantageous embodiment of the invention, the Brennluftzuführeinrichtung on a cooling air fan. Thus active cooling of the combustion air supply device is also possible if the heating / hot water system is idle. stands. This can be effectively counteracted overheating the Brennluftzuführein- direction.
In einer weiteren vorteilhaften Ausführungsform der Erfindung weist die Brennluftzuführeinrichtung einen Brennluftventilator und einen Brennluftkanal auf, und der Brennluftkanal ist so angeordnet, dass die Brennluft dem Brenner unter Umgehung des Kühlluftventilators zuführbar ist.In a further advantageous embodiment of the invention, the Brennluftzuführeinrichtung a combustion air fan and a combustion air duct, and the combustion air duct is arranged so that the combustion air to the burner, bypassing the cooling air fan can be supplied.
Dies erlaubt es, die Brennluft unmittelbar aus der Umgebung über die Lufteintrittsöffnung dem Brenner zuzuführen, ohne dass diese vorher durch Teile der Brennluftzuführeinrichtung erwärmt wird.This makes it possible to supply the combustion air directly from the environment via the air inlet opening to the burner, without this being previously heated by parts of the Brennluftzuführeinrichtung.
In einer weiteren vorteilhaften Ausführungsform der Erfindung weist die Brennluftzuführeinrichtung einen Brennluftventilator auf und der Brennluftventilator und der KühlluftventiIa- • tor sind von einer gemeinsamen Antriebsvorrichtung antreibbar.In a further advantageous embodiment of the invention, the Brennluftzuführeinrichtung a combustion air fan and the combustion air fan and the KühlluftventiIa- • tor are driven by a common drive device.
Damit ist es möglich, eine AntriebsVorrichtung für einen der Ventilatoren einzusparen und so den Aufwand für die Bauelemente der Brennluftzuführeinrichtung gering zu halten. Des Weiteren ist es möglich, den Energiebedarf für die Brennluft- zuführeinrichtung gering zu halten.This makes it possible to save a drive device for one of the fans and so keep the cost of the components of the combustion air supply low. Furthermore, it is possible to keep the energy requirement for the combustion air supply device low.
In einer weiteren besonders vorteilhaften Ausführungsform der Erfindung weist die Brennluftzuführeinrichtung ein Abschirmelement auf, das an einer dem Warmwasserspeicher zugewandten Seite der Brennluftzuführeinrichtung angeordnet ist und mit dem die thermische Kopplung zwischen Brennluftzuführeinrichtung und Warmwasserspeicher reduzierbar ist. Damit ist es möglich, den Wärmestrom vom Warmwasserspeicher zur Brennluftzuführeinrichtung durch ein auf passive Weise wirkendes Bauteil zu reduzieren.In a further particularly advantageous embodiment of the invention, the Brennluftzuführeinrichtung a shielding, which is arranged on a side facing the hot water tank side of the Brennluftzuführeinrichtung and with the thermal coupling between the combustion air supply and hot water storage is reduced. This makes it possible to reduce the heat flow from the hot water tank to the combustion air supply by a passive acting component.
In einer besonders bevorzugten Ausführungsform der Erfindung besteht das Abschirmelement aus Aluminium. In einer weiteren besonders bevorzugten Ausführungsform der Erfindung besteht das Abschirmelement aus einer Magnesium-Aluminium-Legierung. Dies hat den Vorteil, dass Aluminium und Magnesium-Aluminium- Legierungen ein geringes Gewicht des Abschirmelements ermöglichen. Des Weiteren kann das Abschirmelement als Gussteil gefertigt werden und in einfacher Weise mit anderen Bauteilen aus Aluminium oder Aluminiumlegierungen verbunden werden.In a particularly preferred embodiment of the invention, the shielding element made of aluminum. In a further particularly preferred embodiment of the invention, the shielding element consists of a magnesium-aluminum alloy. This has the advantage that aluminum and magnesium-aluminum alloys allow a low weight of the shielding. Furthermore, the shielding element can be manufactured as a cast part and be connected in a simple manner to other components made of aluminum or aluminum alloys.
Ausführungsbeispiele der Erfindung sind im Folgenden anhand der schematischen Zeichnungen erläutert.Embodiments of the invention are explained below with reference to the schematic drawings.
Die Figuren zeigen:The figures show:
Figur 1 eine schematische Ansicht einer ersten Ausführungs- form des kombinierten Heizungs- /Warmwassersystems für mobile Anwendungen in einem Längsschnitt,FIG. 1 shows a schematic view of a first embodiment of the combined heating / hot water system for mobile applications in a longitudinal section,
Figur 2 eine schematische Ansicht einer .zweiten Ausführungs- form des kombinierten Heizungs-/Wärmwassersystems für mobile Anwendungen in einem Längsschnitt,FIG. 2 shows a schematic view of a second embodiment of the combined heating / hot water system for mobile applications in a longitudinal section,
Figur 3 einen Querschnitt durch das kombinierte Heizungs- /Warmwassersystem entlang der Linie III-III der Figur 1, und3 shows a cross section through the combined heating / hot water system along the line III-III of Figure 1, and
Figur.4 einen Querschnitt durch das kombinierte Heizungs- /Warmwassersystem entlang der Linie IV-IV der Figur 1. Die Figuren zeigen ein kombiniertes Heizungs- /Warmwasser- System 10 für mobile Anwendungen mit einem Warmwasserspeicher 12, der eine Ausnehmung 14 aufweist. Der Warmwasserspeicher 12 ist vorzugsweise als Hohlzylinder ausgebildet, kann jedoch auch eine andere Geometrie aufweisen. In der Ausnehmung 14 des Warmwasserspeichers 12 ist ein Brenner 16 angeordnet. Der Brenner 16 hat in seinem Zentrum eine Brennkammer 42 und koaxial um diese herum ist ein Brenngaskanal 44 angeordnet. Tiber den Brenngaskanal 44 und eine Brenngasaustrittsöffnung 46 kann das Brenngas an die Umgebung abgeführt werden.Figure . 4 shows a cross section through the combined heating / hot water system along the line IV-IV of FIG. 1. The figures show a combined heating / hot water system 10 for mobile applications with a hot water tank 12 having a recess 14. The hot water tank 12 is preferably formed as a hollow cylinder, but may also have a different geometry. In the recess 14 of the hot water tank 12, a burner 16 is arranged. The burner 16 has at its center a combustion chamber 42 and coaxially around it a fuel gas channel 44 is arranged. Tiber the fuel gas passage 44 and a fuel gas outlet opening 46, the fuel gas can be discharged to the environment.
In der Ausnehmung 14 des Warmwasserspeichers 12 ist weiter zwischen dem Brenner 16 und dem Warmwasserspeicher 12 koaxial zu diesen ein Wärmeübertrager 17 mit Wärmeübertragerlamellen 17a angeordnet, mittels dem der Brenner 16 thermisch mit dem Warmwasserspeicher 12 gekoppelt ist. Der Wärmeübertrager 17 besteht vorzugsweise aus Aluminium oder einer Aluminiumlegierung. Über eine Heizmediumeintrittsöffnung 48 kann ein Heizmedium in die Ausnehmung 14 des Warmwasserspeichers 12 eintreten und über den Wärmeübextrager 17 mit den Wärmeübertragerlamellen 17a zu einer Heizmediumaustrittsöffnung 50 gelangen. Das Heizmedium ist vorzugsweise Luft, kann jedoch auch Wasser, gegebenenfalls in Kombination mit einem Frostschutzmittel, sein.In the recess 14 of the hot water tank 12 is further arranged between the burner 16 and the hot water tank 12 coaxial with these heat exchanger 17 with heat exchanger fins 17a, by means of which the burner 16 is thermally coupled to the hot water tank 12. The heat exchanger 17 is preferably made of aluminum or an aluminum alloy. Via a heating medium inlet opening 48, a heating medium can enter into the recess 14 of the hot water tank 12 and pass through the heat exchanger 17 with the heat exchanger fins 17 a to a Heizmediumaustrittsöffnung 50. The heating medium is preferably air, but may also be water, optionally in combination with an antifreeze.
Der Brenner 16 weist eine Brennluftzuführeinrichtung 18 und eine Brennstoffzuführeinrichtung 19 auf. Die Brennluftzuführ- einrichtung 18 weist eine Luftleitvorrichtung 28 auf. Die Luftleitvorrichtung 28 hat eine Lufteintrittsöffnung 20, eine erste Luftaustrittsöffnung 22 und eine zweite Luftaustrittsöffnung 24. In der Luftleitvorrichtung 28 ist nahe wenigstens einiger der Lufteintrittsöffnungen 20 ein Kühlluftventilator 30 angeordnet. Mit dem Kühlluftventilator 30 kann Zuluft 36 von außen in die Luftleitvorrichtung 28 eingebracht werden.The burner 16 has a Brennluftzuführeinrichtung 18 and a Brennstoffzuführeinrichtung 19. The combustion air supply device 18 has an air guiding device 28. The air guiding device 28 has an air inlet opening 20, a first air outlet opening 22 and a second air outlet opening 24. In the air guiding device 28 is near at least some of the air inlet openings 20, a cooling air fan 30 arranged. With the cooling air fan 30 supply air 36 can be introduced from the outside into the air guiding device 28.
Die Brennluftzuführeinrichtung 18 weist weiter einen Brenn- luftventilator 27 auf, mittels dem Brennluft 37 über einen Brennluftkanal 26 dem Brenner 16 zugeführt werden kann. Die Brennluft 3'7 kann dabei vorzugsweise entweder direkt über die Lufteintrittsöffnung 20 (Fig. 1) oder über die Lufteintrittsöffnung 20 und den Kühlluftventilator 30 (Fig. 2) in die Brennluftzuführeinrichtung 18 eingebracht werden.The combustion air supply device 18 furthermore has a combustion air ventilator 27, by means of which combustion air 37 can be supplied to the burner 16 via a combustion air duct 26. The combustion air 3'7 can preferably be introduced into the combustion air supply device 18 either directly via the air inlet opening 20 (FIG. 1) or via the air inlet opening 20 and the cooling air fan 30 (FIG. 2).
Ein weiterer Teil des Luftstroms, der durch den Kühlluftventilator 30 in die Luftleitvorrichtung 28 eingebracht wird, umspült als Kühlluft 38 vorzugsweise den Brennluftkanal 26 und gelangt über die erste Luftaustrittsöffnung 22 als Fort- luft 39 wieder an die Umgebung.Another part of the air flow, which is introduced into the air guiding device 28 by the cooling air ventilator 30, preferably flows around the combustion air duct 26 as cooling air 38 and returns to the environment via the first air outlet opening 22 as outgoing air 39.
Der Brennluftventilator 27 und der Kühlluftventilator 30 sind vorzugsweise auf einer gemeinsamen Achse 31 angeordnet, die vorzugsweise durch eine gemeinsame AntriebsVorrichtung 32 antreibbar ist. Brennluftventilator 27 und Kühlluftventilator 30 können jedoch auch durch separate Antriebsvorrichtungen angetrieben werden.The combustion air fan 27 and the cooling air fan 30 are preferably arranged on a common axis 31, which is preferably drivable by a common drive device 32. However, combustion air fan 27 and cooling air fan 30 may also be driven by separate drive devices.
Die Brennluftzuführeinrichtung 18 weist weiter ein Abschirmelement 34 auf. Dieses ist .auf einer dem Warmwasserspeicher 12 und dem Wärmeübertrager 17 zugewandten Seite der Brennluftzuführeinrichtung 18 angeordnet. Das Abschirmelement 34 besteht vorzugsweise aus Aluminium oder einer Magnesium- Aluminium-Legierung. In dem als massives Bauteil ausgeführten Abschirmelement 34 kann insbesondere Wärme, die auf der der' Brennluftzuführeinrichtung 18 zugewandten Seite des Warmwasserspeichers 12 und des Wärmeübertragers 17 abgegeben wird, aufgenommen werden. Es ist damit möglich, im Warmwasserspeicher 12 und Wärmeübertrager 17 auftretende Spitzenwärmemengen so abzupuffern, dass die Wärmeenergie nicht unmittelbar zu den übrigen Bereichen der Brennluftzuführeinrichtung 18 gelangen kann.The combustion air supply device 18 further has a shielding element 34. This is .auf a hot water tank 12 and the heat exchanger 17 facing side of the combustion air supply 18 arranged. The shielding member 34 is preferably made of aluminum or a magnesium-aluminum alloy. In the executed as a solid component shielding member 34 may, in particular heat, which is discharged onto the the 'Brennluftzuführeinrichtung 18 facing side of the hot water storage tank 12 and the heat exchanger 17, be recorded. It is thus possible to buffer the peak heat quantities occurring in the hot water storage tank 12 and heat exchanger 17 in such a way that the heat energy can not reach the remaining areas of the combustion air supply unit 18 directly.
Im Folgenden soll die Funktion des kombinierten Heizungs- /Warmwassersystems 10 im Detail dargestellt werden:In the following, the function of the combined heating / hot water system 10 will be described in detail:
Zuluft 36 wird über die Lufteintrittsöffnung 20 in die Brennluftzuführeinrichtung 18 eingebracht und verteilt sich dort in Richtung auf die erste Luftaustrittsöffnung 22 und die zweite Luftaustrittsöffnung 24. Die durch die zweite Luftaustrittsöffnung 24 der Brennluftzuführeinrichtung 18 hindurchtretende Brennluft 37 wird mittels des Brennluftventilators 27 der Brennkammer 42 zugeführt. Über die Brennstoffzuführ- einrichtung 19 wird vorzugsweise flüssiger Brennstoff, wie er auch zum Antrieb des Fahrzeugs eingesetzt wird, der Brennkammer 42 zugeführt und dort mittels der Brennluft 37 verbrannt. Anstelle des flüssigen Brennstoffs kann jedoch auch gasförmiger Brennstoff eingesetzt werden. Das entstehende Brenngas wird über den Brenngaskanal 44 und die Brenngasaustrittsδff- nung 46 als Abgas 40 nach außen geführt.Supply air 36 is introduced via the air inlet opening 20 into the Brennluftzuführeinrichtung 18 and is distributed there in the direction of the first air outlet opening 22 and the second air outlet opening 24. The passing through the second air outlet opening 24 of the Brennluftzuführeinrichtung 18 combustion air 37 is supplied by the combustion air fan 27 of the combustion chamber 42 , Via the Brennstoffzuführ- device 19 is preferably liquid fuel, as it is also used to drive the vehicle, the combustion chamber 42 and burned there by means of the combustion air 37. However, gaseous fuel can also be used instead of the liquid fuel. The resulting fuel gas is conducted via the fuel gas channel 44 and the fuel gas outlet opening 46 as exhaust gas 40 to the outside.
An der Heizmediumeintrittsöffnung 48 tritt ein Heizmedium, vorzugsweise Luft, in die Ausnehmung 14 des Wärmespeichers 12 zwischen dem Wärmespeicher 12 und dem Brenner 14 ein. Das Heizmedium wird in der Ausnehmung 14 des Warmwasserspeichers 12 insbesondere im Bereich des Wärmeübertragers 17 mit den Wärmeübertragerlamellen 17a erwärmt und tritt an der Heizme- diumaustrittsöffnung 50 aus der Ausnehmung 14 aus. Das Heizmedium kann dann durch ein nicht weiter dargestelltes Heizme- diumleitsystem einem Wärmeverbraucher, vorzugsweise einer Luftheizung bzw. einer Wasserheizung eines Campingfahrzeugs, eines Wohnmobils oder eines Wasserfahrzeugs, zugeführt werden.At the Heizmediumeintrittsöffnung 48 enters a heating medium, preferably air, in the recess 14 of the heat accumulator 12 between the heat accumulator 12 and the burner 14 a. The heating medium is heated in the recess 14 of the hot water storage tank 12, in particular in the region of the heat exchanger 17 with the heat exchanger fins 17 a, and exits the recess 14 at the heating medium outlet opening 50. The heating medium can then be fed to a heat consumer, preferably one, by means of a heating medium control system (not further shown) Air heating or a water heater of a camping vehicle, a motorhome or a watercraft, are supplied.
Der Teil der Zuluft 36, welcher der ersten Luftaustrittsöffnung 22 zugeführt wird, umströmt als Kühlluft 38 insbesondere den Brennluftkanal 26 und das Abschirmelement 34 und kann diese so abkühlen.The part of the supply air 36, which is supplied to the first air outlet opening 22, flows around as cooling air 38, in particular the combustion air duct 26 and the shielding element 34 and can cool them so.
Ist das kombinierte Heizungs-/Warmwassersystem 10 außer Betrieb, und befindet sich das Warmwasser des Warmwasserspeichers 12 auf einer hohen Temperatur, so kann Wärme vom Warmwasserspeicher 12 auf den Wärmeübertrager 17 mit den Wärmeübertragerlamellen 17a übertragen werden. Wärme kann dann vom Warmwasserspeicher 12 und vom Wärmeübertrager 17 abgegeben werden. Mittels des Abschirmelements 34 ist es möglich, den Wärmefluss von dem Warmwasserspeicher 12 und dem Wärmeübertrager 17 zu der Brennluftzuführeinrichtung 18 zu begrenzen. Insbesondere kann das Abschirmelement 34 als Pufferelement für die vom Wärmeübertrager 17 zur Brennluftzuführeinrichtung 18 fließende Wärmeenergie eingesetzt werden.If the combined heating / hot water system 10 is out of operation, and the hot water of the hot water tank 12 is at a high temperature, heat can be transferred from the hot water tank 12 to the heat exchanger 17 with the heat exchanger fins 17a. Heat can then be released from the hot water tank 12 and the heat exchanger 17. By means of the shielding element 34, it is possible to limit the heat flow from the hot water storage tank 12 and the heat exchanger 17 to the combustion air supply device 18. In particular, the shielding element 34 can be used as a buffer element for the thermal energy flowing from the heat exchanger 17 to the combustion air supply device 18.
Sollte die Temperatur im Bereich der Brennluftzuführeinrichtung 18 zu hoch sein, so kann der Kühlluftventilator 30 über eine geeignete Steuereinrichtung in Betrieb genommen werden und Zuluft 36 über die Lufteintrittsoffnung 20 zur ersten Luftaustrittsöffnung 22 geführt werden, wobei die Kühlluft 38 die Brennluftzuführeinrichtung 18 abkühlen kann. Damit ist es möglich, Teile der Brennluftzuführeinrichtung 18, die hohen Temperaturen gegenüber empfindlich sind, mittels des Kühl- luftventilators 30 und der Luftleitvorrichtung 28 wirksam vor einer zu hohen Wärmebelastung zu schützen. If the temperature in the area of the combustion air supply device 18 is too high, the cooling air fan 30 can be put into operation via a suitable control device and supply air 36 can be guided via the air inlet opening 20 to the first air outlet opening 22, wherein the cooling air 38 can cool the combustion air supply device 18. This makes it possible to effectively protect parts of the combustion air supply device 18, which are sensitive to high temperatures, from the heat load by means of the cooling air fan 30 and the air guiding device 28.

Claims

_ Q _Patentansprüche _ Q _Patent claims
1. Kombiniertes Heizungs-/Warmwassersystem (10) für mobile Anwendungen, mit1. Combined heating / hot water system (10) for mobile applications, with
- einem Warmwasserspeicher (12) mit einer Ausnehmung (14), und- A hot water tank (12) with a recess (14), and
- einem in der Ausnehmung (14) des Warmwasserspeichers (16) angeordneten Brenner (16) für die Verbrennung flüssiger oder gasförmiger Brennstoffe, wobei der Brenner (16) thermisch mit dem Warmwasserspeicher (12) gekoppelt ist und eine Brennluft- zuführeinrichtung (18) aufweist, wobei die Brennluftzuführeinrichtung (18) eine Luftleitvorrichtung (28) mit einer Lufteintrittsöffnung (20) , einer ersten Luftaustrittsöffnung (22) und einer zweiten Luftaustrittsöffnung (24) aufweist, und die erste Luftaustrittsöffnung (22) so angeordnet ist, dass die Brennluftzuführeinrichtung (18) kühlbar ist, und die zweite Luftaustrittsöffnung (24) so angeordnet ist, dass dem Brenner (16) Brennluft zuführbar ist.- One in the recess (14) of the hot water tank (16) arranged burner (16) for the combustion of liquid or gaseous fuels, wherein the burner (16) is thermally coupled to the hot water tank (12) and a combustion air supply means (18) wherein the Brennluftzuführeinrichtung (18) comprises an air guiding device (28) having an air inlet opening (20), a first air outlet opening (22) and a second air outlet opening (24), and the first air outlet opening (22) is arranged so that the combustion air supply means (18 ) is coolable, and the second air outlet opening (24) is arranged so that the burner (16) combustion air can be supplied.
2. Kombiniertes Heizungs-/Warmwassersystem (10) nach Anspruch 1, dadurch gekennzeichnet, dass die Brennluftzuführeinrichtung (18) einen Kühlluftventilator (30) aufweist.2. Combined heating / hot water system (10) according to claim 1, characterized in that the Brennluftzuführeinrichtung (18) has a cooling air fan (30).
3. Kombiniertes Heizungs-/Warmwassersystem (10) nach Anspruch 2, dadurch gekennzeichnet, dass die Brennluftzuführeinrichtung (18) einen Brennluftventilator (27) und einen Brennluftkanal (26) aufweist und dass der Brennluftkanal (26) so angeordnet ist, dass die Brennluft dem Brenner (16) unter. Umgehung des Kühlluftventilators (30) zuführbar ist.3. Combined heating / hot water system (10) according to claim 2, characterized in that the Brennluftzuführeinrichtung (18) has a combustion air fan (27) and a combustion air duct (26) and that the combustion air duct (26) is arranged so that the combustion air Burner (16) under. Bypassing of the cooling air fan (30) can be fed.
4. Kombiniertes Heizungs-/Warmwassersystem (10) nach Anspruch 2, dadurch gekennzeichnet, dass die Brennluftzuführ- einrichtung (18) einen Brennluftventilator (27) aufweist und dass der Brennluftventilator (27) und der Kühlluftventilator (30) von einer gemeinsamen Antriebsvorrichtung (32) antreibbar sind.4. Combined heating / hot water system (10) according to claim 2, characterized in that the Brennluftzuführ- Device (18) comprises a combustion air fan (27) and that the combustion air fan (27) and the cooling air fan (30) by a common drive device (32) are drivable.
5. Kombiniertes Heizungs-/Warmwassersystem (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Brennluftzuführeinrichtung (18) ein Abschirmelement (34) aufweist, das an einer dem Warmwasserspeicher (12) zugewand-- ten Seite der Brennluftzuführeinrichtung (18) angeordnet ist und mit dem die thermische Kopplung zwischen Brennluftzuführ- einrichtung (18) und Warmwasserspeicher (12) reduzierbar ist.5. Combined heating / hot water system (10) according to one of the preceding claims, characterized in that the combustion air supply device (18) has a shielding element (34) which faces the hot water reservoir (12) side of the combustion air supply device (18). is arranged and with which the thermal coupling between Brennluftzuführ- device (18) and hot water tank (12) can be reduced.
6. Kombiniertes Heizungs-/Warmwassersystem (10) nach Anspruch 5, dadurch gekennzeichnet, dass das Abschirmelement (34) aus Aluminium besteht.6. Combined heating / hot water system (10) according to claim 5, characterized in that the shielding element (34) consists of aluminum.
7. Kombiniertes Heizungs-/Warmwassersystem (10) nach Anspruch 5, dadurch gekennzeichnet, dass das Abschirmelement (34) aus einer Magnesium-Aluminium-Legierung besteht. 7. Combined heating / hot water system (10) according to claim 5, characterized in that the shielding element (34) consists of a magnesium-aluminum alloy.
PCT/DE2006/002278 2006-03-14 2006-12-19 Combined heating/warm water system for mobile applications WO2007104271A1 (en)

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US12/281,483 US20090008465A1 (en) 2006-03-14 2006-12-19 Combined heating/warm water system for mobile applications
DE202006020902U DE202006020902U1 (en) 2006-03-14 2006-12-19 Combined heating / hot water system for mobile applications
EP06828707A EP1993865A1 (en) 2006-03-14 2006-12-19 Combined heating/warm water system for mobile applications
CN2006800538499A CN101400530B (en) 2006-03-14 2006-12-19 Combined heating/warm water system for mobile applications
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KR20080092427A (en) 2008-10-15
US20090008465A1 (en) 2009-01-08
CN101400530A (en) 2009-04-01
CN101400530B (en) 2013-03-13
JP2009529647A (en) 2009-08-20
EP1993865A1 (en) 2008-11-26
DE102006011727B3 (en) 2007-11-22
CA2645270A1 (en) 2007-09-20
DE202006020902U1 (en) 2010-09-30

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