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EP0841522A2 - Accumulateur avec générateur de chaleur insérable - Google Patents

Accumulateur avec générateur de chaleur insérable Download PDF

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Publication number
EP0841522A2
EP0841522A2 EP97119675A EP97119675A EP0841522A2 EP 0841522 A2 EP0841522 A2 EP 0841522A2 EP 97119675 A EP97119675 A EP 97119675A EP 97119675 A EP97119675 A EP 97119675A EP 0841522 A2 EP0841522 A2 EP 0841522A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
cap
combustion chamber
storage
burner
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.)
Withdrawn
Application number
EP97119675A
Other languages
German (de)
English (en)
Other versions
EP0841522A3 (fr
Inventor
Thomas Dipl.-Ing. Krause
Helmut Dipl.-Ing. Jäger
Klaus-Henning Dipl.-Ing. Terschüren
Heinrich Lange
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.)
SOLVIS Solarsysteme GmbH
Original Assignee
SOLVIS Solarsysteme 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 SOLVIS Solarsysteme GmbH filed Critical SOLVIS Solarsysteme GmbH
Publication of EP0841522A2 publication Critical patent/EP0841522A2/fr
Publication of EP0841522A3 publication Critical patent/EP0841522A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/205—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes with furnace tubes
    • F24H1/206—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes with furnace tubes with submerged combustion chamber

Definitions

  • the invention relates to a memory with a heat generator insert for heating a medium with a heat generator, in particular an oil or gas burner, which has a combustion chamber, an exhaust gas heat exchanger and an exhaust gas duct and can be mounted on a mounting flange of the memory containing the medium via a pressure-tight flange cover .
  • Such heat generators are preferably used for heating domestic water or heating water in a store.
  • the storage tank or boiler can work as a directly heated domestic water heater or as a buffer storage heat generator.
  • Oil or gas burners, with or without use of the condensing boiler, are preferably used as the heat generator or burner for generating the heat.
  • a variety of power ranges and types of firing also require a variety of different basic devices.
  • a boiler with a boiler body and a combustion chamber arranged therein with a burner is known, which can be marketed as a low-temperature boiler and as a condensing boiler.
  • the combustion chamber is designed as a one-piece, corrosion-resistant boiler body insert. It can be connected to the boiler body via a flange-shaped outer wall.
  • the combustion chamber is designed as a reversal combustion chamber, as a result of which the resulting heating gases have to flow back around the combustion flame. Due to the countercurrent, turbulence is achieved in the edge zones of the burner flame, which overlaps the flame core and in this way better mixes the excess fuel there with the excess air in the outer jacket of the flame.
  • the combustion chamber and the exhaust pipe can be connected to one another by means of a corrosion-resistant secondary heating surface.
  • a corrosion-resistant secondary heating surface is available, in which in particular the latent heat still contained in the exhaust gas in the form of water vapor is made usable by condensation.
  • the secondary heating surface can be used with surface-enlarging elements. It can be connected to the lowest point of the combustion chamber and inclined towards the exhaust pipe.
  • a condensate collection device is designed with a drain connection. This will drain the condensate from the boiler.
  • the combustion chamber can, however, also be arranged vertically in the boiler body and have a connection at the lowest point to which a condensate line leading to a lower-lying drain connection arranged on the boiler body is connected. As a result, the resulting condensate is continuously drained away, and condensate accumulation that affects the operational safety of the boiler is avoided.
  • the invention has for its object to provide such a structural design for a memory with a heat generator insert of the type mentioned, in which an adaptation to the respectively required heat output and to different types of burners is achieved with a small number of basic elements.
  • the invention thus consists in that the heat generator or burner, the combustion chamber, the exhaust gas heat exchanger, the exhaust gas duct and the flange cover are combined to form an assembly which as a whole can be attached to and detached from the store or boiler.
  • a basic unit type for the storage tank or boiler can accommodate different types of burners, such as oil burners or gas burners, with or without using the amount of condensation heat contained in the exhaust gas.
  • a heat exchanger insert can also be provided and alternatively installed at the same location instead.
  • the same module can also be used in different device types, especially in different sized memories. This is achieved in that all the different dimensions of the memory have the same mounting flange.
  • Modular output adjustment and / or a shift in the boiler requirement is possible by freely changing the combustion chamber length and the heat exchanger tube length.
  • a variety of materials for the combustion chamber and exhaust pipes can be used to choose between particularly good heat-conductive materials and particularly corrosion-resistant materials (e.g. aluminum, coated aluminum, enamelled steel, glass, corrosion-resistant coated steel). There are particular advantages for warehousing and the time required for cleaning, maintenance and repairs.
  • the assembly is releasably attached with its flange cover to the mounting flange of the accumulator.
  • a positive locking connection in particular a bayonet lock, can also be provided.
  • a bayonet lock enables safe, fast and almost powerless locking and unlocking without special tools. Elaborate non-positive connections such as screw flanges are then not required.
  • other flange shapes are also possible and, for reasons of simplification, can preferably be used.
  • the combustion chamber housing is closed at its end opposite the burner by a lid-shaped exhaust gas cap which has a cup-like or bell-like bulge directed into the combustion chamber.
  • This bulge significantly increases the effective heat exchanger area in the burner area.
  • a special design of the bulge and / or the condensing chamber ribbing can effectively suppress the tendency of surface burners to vibrate and achieve a steady, smooth burner operation.
  • the seat for the seal and the seal between the mounting flange and the flange cover and / or between the Exhaust pipes and the cover cap or exhaust cap are designed so that the pressure exerted by the medium contained in the accumulator increases the surface pressure of the seal.
  • the assembly is then secured against unlocking by the pressure present, without additional means or measures being necessary for this securing.
  • Seals are also provided on the individual exhaust gas tubes of the exhaust gas heat exchanger, which are shaped similarly to lip seals.
  • the seal is spread out similarly to a Simmer ring.
  • Such a lip seal type seal is more expensive than, for example, an O-ring, but it also proves to be better due to the wider sealing surface and therefore the better sealing effect.
  • a plurality of mutually parallel exhaust gas tubes serving as exhaust gas heat exchangers are preferably arranged after the combustion chamber and are received on the one hand by the cap cap and on the other hand by the exhaust cap. Then it is possible to adjust the output or change the boiler requirement, e.g. by changing the pipe lengths for otherwise identical components.
  • the number of parallel exhaust pipes and / or their flow cross section can decrease in the direction of the cooling exhaust gas flow. As a result, a uniform flow velocity of the exhaust gas is achieved over the entire heat exchanger, which results in equally good Reynolds numbers and thus optimal heat transfers.
  • the exhaust gas heat exchanger is preferably arranged spatially below the combustion chamber.
  • the coldest possible exhaust gas can be achieved, e.g. B. for the condensation of moisture in the exhaust gas during condensing operation.
  • the exhaust gas heat exchanger is located in the colder area of the store and cools the exhaust gas to low temperatures, which ensures good efficiency and low pollutant levels can be achieved.
  • a check valve in particular in the form of a rubber membrane, can be provided in the area of the gas-air mixture supply to the burner in order to prevent condensate formation by reverse flow when the burner is switched off.
  • the flap closes due to negative pressure. As a result, no air can flow backwards and cool down, which promotes the formation of condensate.
  • the condensate can be easily removed.
  • the flue gas heat exchanger is tilted slightly towards the burner side of the cover. If the storage tank is otherwise vertical, the condensate is discharged to the outside through the cover.
  • An inclination of the insert of 5 ° with respect to the horizontal can be provided.
  • the combustion chamber can also have an inclination directed towards the rear of the storage device and the exhaust gas heat exchanger can have an inclination directed towards the cover.
  • the exhaust gas cap and / or the cap cap are preferably provided horizontally with intermediate webs. Condensate drills in the individual intermediate webs ensure that the condensate runs off reliably between the individual trains.
  • Fig. 1 shows the structure of the insert in a simplified schematic representation.
  • the burner 1 with the combustion head 1 a which is fed on the one hand with air and on the other hand with oil or gas, the combustion chamber 4 formed by the combustion chamber wall or the combustion chamber housing 3, the exhaust gas heat exchanger formed from parallel tubes 5, the exhaust gas duct 2, the cap cap 6 and the exhaust gas cap 10 form a compact unit, which is mounted as a whole on the mounting flange 7 of the memory 13.
  • the attachment is made by a bayonet lock using a seal 8. This unit can also be removed from the memory 13 as a compact unit without dismantling further components.
  • the cover cap 6 contains a plurality of intermediate webs 9 which serve for stabilization and flow guidance and which are provided with condensate bores to improve the condensate discharge.
  • the end of the combustion chamber housing 3 facing away from the burner 1 is closed off by a lid-shaped exhaust gas cap 10 which has a bulge 11 which is directed into the combustion chamber 4 and is open to the store.
  • the bulge 11 increases the heat exchanger area between the combustion chamber 4 and the medium to be heated, such as in particular service or heating water, surrounding the combustion chamber housing 3.
  • the exhaust gas cap 10 can also contain a plurality of intermediate webs 12 which serve for stabilization and flow guidance and which are provided with condensate bores in order to improve the condensate discharge.
  • the entire combustion chamber housing 3 is located in the actual store 13, in which there is water to be heated, standing or flowing through.
  • the number of exhaust pipes 5 in the individual horizontal positions can decrease in order to achieve a uniform flow velocity in the direction with the exhaust gas flow.
  • Fig. 2 essentially shows the components of Fig. 1 again without the exhaust gas routing.
  • the air is fed to the burner 1 via the inlet 14 and oil or gas is fed via the inlet 15.
  • the memory 13 is surrounded by the outer jacket 17 to form a space 16.
  • the space 16 is with a heat insulating material 18 such. B. glass wool filled.
  • FIG. 3 shows, in a vertical section, in particular the combustion chamber housing 3, the combustion chamber 4, the large number of exhaust gas pipes 5 through which the exhaust gas flows, forming the exhaust gas heat exchanger, the cap cap 6 and the fastening flange 7 of the memory (not shown).
  • the cover cap 6 and the mounting flange 7 are symbolic with one another Bayonet lock 19 shown securely, quickly and almost effortlessly locked together and also detachable from each other again.
  • FIG. 4 shows a sectional view through a store 13 with an inclined insert 20.
  • the inclination is, for example, 5 ° with respect to the horizontal in order to allow a better outflow of condensate collecting in the exhaust gas tubes 5. This advantageously prevents corrosion spots from occurring in the exhaust gas tubes.
  • the combustion chamber itself can also be inclined towards the interior of the store, whereas the exhaust gas tubes have an opposite inclination towards the cover or cover cap. This also allows the condensate that collects in the exhaust gas tubes to flow away there. The risk of corrosion is due to aggressive salts, which form when the condensate that collects and the crystallization that occurs.
  • the direction of flow through the exhaust gas tubes is preferably chosen to lead in parallel in the same direction.
  • the flow slows down as soon as the flowing medium becomes colder.
  • the heated medium generated by the burner in the combustion chamber is collected and then introduced into the exhaust gas cap.
  • FIG. 5 shows a sectional view through a seal 21 of a respective exhaust gas tube.
  • This seal represents a kind of lip seal and is shaped and dimensioned to suit the conditions in the fastening area of the tubes in the insert. If a medium presses against this seal in the direction of the arrows, it is spread like a Simmer ring. This creates a wide sealing surface, which also makes the sealing effect particularly good. This makes this seal better than an O-ring, but it is more expensive than it.
  • FIG. 6 shows a plan view of an exhaust gas tube 5.
  • the exhaust gas tube has an inner rib 22.
  • the individual ribs 23, 24 are alternately provided, the ribs 23 being longer than the ribs 24.
  • Grooves 25 are arranged between the individual ribs 23, 24.
  • the ribs 23 and 24 have an angular distance ⁇ from one another, the ribs 24 and 23 have an angular distance ⁇ .
  • ⁇ is preferably equal to ⁇ .
  • a swirl plate in the form of a helix 26 is advantageously provided in the interior of the exhaust gas tubes 5. This can be better seen in FIG. 7 .
  • the flow resistance is increased by swirl plate 26 and inner rib 22.
  • the core flow is disturbed and turbulence is created.
  • An increase in pressure resistance occurs.
  • the flow is forced into the rib 22. This results in a better heat exchange with the medium flowing around the exhaust gas tubes.
  • these are preferably eccentrically shaped with regard to their ribbing in such a way that the condensate can not only drain in the longitudinal direction of the exhaust gas pipe, but also in the transverse direction there is an outflow to the lowest point of the exhaust gas pipe.
  • the exhaust pipes can be eccentrically shaped with respect to their walls. As a result, a thicker wall thickness is provided in the area of possible corrosion spots. As a result, the wall of the exhaust gas tube can have a longer service life despite corrosion. Areas of such thicker material thicknesses are preferably provided in the lower area of the exhaust gas tubes.
  • FIGS. 7 to 9 A preferred embodiment of the cover cap 6 with an inspection cover 30 can be seen in FIGS. 7 to 9 .
  • the inspection cover 30 can be unscrewed in front of the exhaust pipes and can be opened. This gives an insight into the exhaust gas tubes, which proves to be very advantageous, in particular when checking corrosion spots.
  • the lid cap can also be opened for cleaning purposes, for example to remove corrosion spots.
  • the opening of the cover cap during the inspection that is to say during the leak test, also proves to be advantageous, which is why the cover cap can also be referred to here as an inspection cover.
  • the burner 1 is preferably attached to the combustion chamber flange 3 of the cap cap by screwing the burner flange cover on which the burner is fastened.
  • This burner flange cover is preferably made of fire-retardant material and at the same time forms the boiler door. This advantageously saves additional costs for a boiler door, which saves effort and costs.
  • One measure to prevent the undesirable formation of condensate is to prevent fresh air from flowing backwards. After the burner has been switched off, a reverse flow of fresh air can occur. The air flowing in the process can cool down. As a result, condensate can arise in the entire route of the exhaust gas heat exchanger 5, exhaust gas cap 10, combustion chamber 4, burner head 1a, burner 1 and housing. In order to avoid this backward flow and thus possible formation of condensate, a non-return valve is provided in the area of the gas / air mixture supply to the burner. If the burner is switched off, this flap closes. As a result, no reverse flow can occur.
  • the upper area of the store is divided into three parts.
  • the first, top area is used for water heating and is therefore hot.
  • the heat is preferably given off via an external heat exchanger.
  • a second, middle layer is preferably temperature-controlled.
  • a temperature sensor is preferably provided here to enable reheating at the desired point.
  • the burner output is regulated here.
  • the weather-compensated temperature is reached by using a burner in the range of 100 to 30%. If hot water is required, a signal is given that full power is required. The hot water then flows upwards from the combustion chamber. Since the insert 20 is not located in the uppermost area of the memory, but below it, generally do not use the particularly hot water in the top area of the storage tank. In order to find a solution for this, the insert is surrounded by a bell 40.
  • An opening is then provided in the upward region of the bell 40 either over the entire width or length of the insert.
  • individual openings could also be provided.
  • devices 41 similar to chimney are connected to them.
  • the chimney-like facilities act like a stratified storage facility, which supplies the energy to the individual heat layers in a temperature-oriented manner.
  • pressure-guided flaps are provided in the area of outlets 42 in the chimney-like devices. Such devices with bell are indicated in Fig. 10 .
  • a relatively narrow, long opening can also be provided in the upper region of the bell 40.
  • This can be provided with an oblique guide device and can be joined together with an essentially narrow cuboid chimney element.
  • the cuboid element then has one or more flaps one above the other in the longitudinal direction. These are also led through and thus cause a layer separation into layers with different temperatures.
  • large, long flaps numerous smaller ones, in particular also in the form of numerous small openings, can also be provided.
  • the entire burner 1 including fittings is surrounded by a hood.
  • This hood is sealed airtight for storage insulation in the form of space 16 and outer jacket 17 and integrated into the supply air system.
  • the burner fan sucks its fresh air from the hood space surrounding it.
  • the hood sucks through a concentric air-exhaust system from the outside air or, in the case of simple exhaust systems, from the room air of the surrounding room.
  • This hood is attached to a frame, which is adjustably screwed to the cover cap 6 and can be opened for maintenance work. This provides a cost-effective adjustment of the hood to the storage insulation without having to mount special fastening elements on the storage tank.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Supply (AREA)
EP97119675A 1996-11-11 1997-11-11 Accumulateur avec générateur de chaleur insérable Withdrawn EP0841522A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19646294 1996-11-11
DE19646294 1996-11-11

Publications (2)

Publication Number Publication Date
EP0841522A2 true EP0841522A2 (fr) 1998-05-13
EP0841522A3 EP0841522A3 (fr) 2000-01-12

Family

ID=7811153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119675A Withdrawn EP0841522A3 (fr) 1996-11-11 1997-11-11 Accumulateur avec générateur de chaleur insérable

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EP (1) EP0841522A3 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10246259B3 (de) * 2002-10-02 2004-03-04 Solvis Gmbh & Co. Kg Speicher mit Wärmeerzeugereinschub
EP1406049A2 (fr) 2002-10-02 2004-04-07 Solvis GmbH & Co. KG Accumulateur avec générateur de chaleur insérable
DE10313415A1 (de) * 2003-03-25 2004-10-14 Solvis Gmbh & Co. Kg System zur Versorgung von Verbrauchern mit Warmwasser
DE10345076A1 (de) * 2003-09-26 2005-04-21 E On Ruhrgas Ag Temperiergerät für industrielle Wärmeverbraucher
DE102005010113A1 (de) * 2005-03-02 2006-09-14 Mhg Heiztechnik Gmbh Wärmetauscher für eine Heizeinrichtung
EP1813881A3 (fr) * 2006-01-25 2009-06-24 Robert Bosch Gmbh Echangeur thermique
DE102008009998A1 (de) 2008-02-19 2009-08-20 Solvis Gmbh & Co.Kg Feuerung mit Brennkammer, Wandung und Sauerstoffzufuhr
DE102008043029A1 (de) * 2008-10-22 2010-04-29 BSH Bosch und Siemens Hausgeräte GmbH Warmwasserspeicher
US8631667B2 (en) 2006-09-18 2014-01-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Adsorption heat pump with heat accumulator
DE10024797B4 (de) * 1999-05-25 2016-03-24 Vaillant Gmbh Heizwasserbereiter
EP4239246A4 (fr) * 2020-10-28 2024-08-28 Cordón Urbiola, Jose, Luis Chaudière à combustion

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211153A1 (de) 1992-03-31 1993-10-07 Bruns Gmbh Geb Heizkessel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4301772A (en) * 1980-06-02 1981-11-24 A. O. Smith Corporation Water heating apparatus
US4465024A (en) * 1982-04-16 1984-08-14 Pvi Industries Incorporated Water heater
FR2644230A1 (fr) * 1989-03-07 1990-09-14 Lacaze Sa Julien Ballon de chauffage d'un liquide, notamment d'eau, et ensemble monobloc de combustion et d'echange de chaleur destine a equiper un tel ballon

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211153A1 (de) 1992-03-31 1993-10-07 Bruns Gmbh Geb Heizkessel

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10024797B4 (de) * 1999-05-25 2016-03-24 Vaillant Gmbh Heizwasserbereiter
DE10246259B3 (de) * 2002-10-02 2004-03-04 Solvis Gmbh & Co. Kg Speicher mit Wärmeerzeugereinschub
EP1406049A2 (fr) 2002-10-02 2004-04-07 Solvis GmbH & Co. KG Accumulateur avec générateur de chaleur insérable
EP1406049A3 (fr) * 2002-10-02 2004-05-26 Solvis GmbH & Co. KG Accumulateur avec générateur de chaleur insérable
DE10313415B4 (de) * 2003-03-25 2007-05-31 Solvis Gmbh & Co. Kg System zur Versorgung von Verbrauchern mit Warmwasser
DE10313415A1 (de) * 2003-03-25 2004-10-14 Solvis Gmbh & Co. Kg System zur Versorgung von Verbrauchern mit Warmwasser
DE10345076A1 (de) * 2003-09-26 2005-04-21 E On Ruhrgas Ag Temperiergerät für industrielle Wärmeverbraucher
DE102005010113A1 (de) * 2005-03-02 2006-09-14 Mhg Heiztechnik Gmbh Wärmetauscher für eine Heizeinrichtung
EP1813881A3 (fr) * 2006-01-25 2009-06-24 Robert Bosch Gmbh Echangeur thermique
US8631667B2 (en) 2006-09-18 2014-01-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Adsorption heat pump with heat accumulator
DE102008009998A1 (de) 2008-02-19 2009-08-20 Solvis Gmbh & Co.Kg Feuerung mit Brennkammer, Wandung und Sauerstoffzufuhr
DE102008043029A1 (de) * 2008-10-22 2010-04-29 BSH Bosch und Siemens Hausgeräte GmbH Warmwasserspeicher
CN102292604A (zh) * 2008-10-22 2011-12-21 Bsh博世和西门子家用电器有限公司 热水存储器
WO2010046304A3 (fr) * 2008-10-22 2013-03-21 BSH Bosch und Siemens Hausgeräte GmbH Réservoir d'eau chaude
EP4239246A4 (fr) * 2020-10-28 2024-08-28 Cordón Urbiola, Jose, Luis Chaudière à combustion

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Publication number Publication date
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