EP0733853B1 - Heizgerät - Google Patents
Heizgerät Download PDFInfo
- Publication number
- EP0733853B1 EP0733853B1 EP96103626A EP96103626A EP0733853B1 EP 0733853 B1 EP0733853 B1 EP 0733853B1 EP 96103626 A EP96103626 A EP 96103626A EP 96103626 A EP96103626 A EP 96103626A EP 0733853 B1 EP0733853 B1 EP 0733853B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- duct
- shaped line
- heating appliance
- appliance according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/002—Stoves
- F24C3/004—Stoves of the closed type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/03007—Sealed combustion chambers with balanced flue
Definitions
- the invention is based on a heater of the type of the main claim.
- heaters of this Genus so-called exterior wall units
- the Combustion chamber gas-tight in relation to the installation room completed and stands above the atmosphere with only one Exhaust pipe and a feed device for the Combustion air in connection.
- a concentric tube unit that covers an outer wall of the Installation room penetrates, with the exhaust pipe equipped with a fan that promotes the extraction of the exhaust gases is.
- DE-OS 33 40 848 is a heater with a Environment gas-tight combustion and Exhaust area described, one for the supply of Combustion air-trained duct in the interior of the Combustion chamber opens out. This channel is through the actual boiler room of the combustion chamber and through the combustion chamber is limited.
- An embodiment of an outer wall device with a open combustion chamber, as usually in air-dependent devices with a chimney connection are used are disclosed in DE-OS 30 25 532.
- the entire heater is enclosed in a housing that is designed as a gas-tight lockable box.
- This box is with a passage for that Provide combustion air and the exhaust gases.
- the outside Combustion air supplied passes through the the box and through the shell of the combustion chamber formed annulus down and thus reaches the burner of the heater.
- Fan burner and open combustion chamber finds an air supply not only through the lower, to Burner open part of the combustion chamber, but also via the open combustion chamber instead of. This means that a defined air supply is only possible via the Burner not given. Because the fuel supply immediately on the burner, there is sufficient mixing of the Gas and air components not secured.
- Such a device delivers high NOx and CO values and does not meet them today's emissions standards.
- EP 272 660 A2 describes a heater with a burner and a combustion chamber inside a gas-tight Housing known, the combustion chamber via a Has exhaust pipe in which a fan is arranged, the pushes the exhaust gas out of the combustion chamber.
- An exhaust air line is provided via the exhaust line Combustion air is fed to a duct-shaped line, in which a premix of air and fuel takes place.
- Combustion chamber emerges from GB 1 418 867. there are in the bottom of the combustion chamber next to the burner Openings exist through which part of the combustion air as secondary air in an overlying burner Combustion chamber flows.
- FR 1 329 980 discloses one as a Venturi nozzle trained fuel-air mixture nozzle for one Gas burner.
- the (outer wall) heater according to the invention with the characteristic features of the main claim has the Advantage that the combustion chamber is largely free can be designed and that through the channel-shaped line for the supply of the combustion air and the fuel one intensive premixing of the fuel and the Combustion air takes place. This makes the device special Low in pollutants and has a high effectiveness and Standard efficiency. Because that is close to the combustion chamber attached blower is exposed to hot exhaust gases, there is a need for cooling. That will be through the Inclusion of the fan in a box-shaped extension reached the channel-shaped line, so that the passing air cools the fan.
- Both of the embodiments shown in FIGS. 1 and 2 of a heater have the following common features: One end of the channel-shaped line is up to the Burner of the heater led and sealed. Through the Swirling air and fuel in the channel-shaped Management ensures that a complete and intensive premixing of the fuel with the Combustion air takes place.
- the mixing of air and fuel can continue be improved and a simple way Differential pressure measuring point set up for the air mass flow be, which in connection with a not shown Gas control valve the mixing ratio of fuel and Combustion air in the sense of optimizing the combustion can be controlled.
- the cross section of an outlet part of the Venturi-shaped section of the channel-shaped Line is extended with an angle that is determined so that through the meeting of the educating Mix mass flows with the side walls of the channel-shaped Pipe after a pressure drop occurring are minimized.
- the one following this section Deflection area contributes to an extension of the mixing section and thus an optimal mixing of the air and Share of fuel, while maintaining it a compact design of the heater.
- the channel-shaped line at its end on the burner side funnel-shaped expanded this ensures that the entire burner area with the fuel-air mixture can be supplied and the horizontal and vertical Expansion are determined so that the other components of the Heater are housed space-saving.
- the heater shown in Fig. 1 with the open Combustion chamber and a fully trained one channel-shaped line has the following additional features on: part of the inner wall of the housing that the heater gas-tight, can be part of the spatial Limitation of the channel-shaped line can be used; in order to it contributes to the compact design and it will Material costs saved.
- FIG. 1 shows a schematic illustration a heater with an open combustion chamber and a fully formed channel-shaped line
- Fig. 2 shows an embodiment with a shortened channel-shaped Pipe and with closed combustion chamber.
- Fig. 1st and 2 shown heaters point to the environment gastight sealed housing 12, 12 ', which in its Interior 50.50 'a combustion chamber 10.10' with a blowers 16, 16 'arranged on the exhaust gas side and a channel-shaped line 14,14 'for the supply of Absorbs combustion air.
- a combustion chamber 10.10' with a blowers 16, 16 'arranged on the exhaust gas side and a channel-shaped line 14,14 'for the supply of Absorbs combustion air.
- the burner surface 42,42 ' is rectangular, and a heat exchanger 18, 18 'arranged.
- the combustion chamber 10, 10 ' forms an exhaust gas hood 19, 19 ', which has an outlet opening 44, 44' that of a housing 15, 15 'of the blower 16, 16' is covered and that from the exhaust outlet 44,44 'of Combustion chamber 10,10 'the inlet opening for the fan 16, 16 'forms.
- An outlet opening of the fan 16, 16 ' is connected to an exhaust pipe 22,22 'on the top the housing 12, 12 'passes through an opening 23, 23'.
- the exhaust pipe 22, 22 ' is concentric with a supply pipe 24,24 'for the combustion air surround that also Housing 12, 12 'at the top through opening 23, 23' interspersed and so dimensioned in its outer diameter is that it cooperates with the opening 23, 23 ' Interior 50.50 'gas-tight from the environment.
- the channel-shaped line 14, 14 'formed around the area of the fuel supply 53, 53'' consists of an inlet part 28, 28', a narrow point 30, 30 'and an outlet part 32, 32' whose cross section widens at an angle ⁇ , ⁇ ' .
- Two control lines (70, 70 ', 71, 71') connected to the channel-shaped line 14, 14 'in the area of the fuel supply 53, 53' serve to decrease a differential pressure ⁇ p st , the size of which is required for regulating the gas supply.
- the channel-shaped line 14, 14 ' is designed such that it extends over a funnel-shaped distribution chamber 40, 40' and adjoins the section 38, 38 ' Seals 41, 41 'with the underside of the burner 20, 20'.
- the funnel-shaped expansion of the distribution chamber 40, 40 ' ensures that the entire burner surface 42, 42' of the burner 20, 20 'is supplied with a fuel-air mixture and the spatial extent of the housing 12, 12' is dimensioned such that the Components of the heater are housed to save space.
- the channel-shaped line 14 has a box-shaped extension 13 on the inclusion of the Blower 16 is used. Following the box-shaped Extension 13 is the channel-shaped line 14 through a first deflection point 56 between a lateral inner wall 59 of the housing 12 and the combustion chamber 10 passed that both a first partition 61 of channel-shaped line 14 to the inner wall 59 of the housing 12, as well as a second partition 62 of the channel-shaped line 14 to the combustion chamber 10 with a space is spaced. Via a second deflection point 57 channel-shaped line 14 along a lower inner wall 60 of the housing 12, with an intermediate space here as well between the partition 61 of the channel-shaped line 14 and the lower inner wall 60 is formed.
- the first Partition 61 can from an input area 11 of the Air supply up to point 55 at which fuel line 54 opens into the channel-shaped line 14, omitted if the Inner walls 58, 59, 60 of the housing 12 as spatial Limitation for the channel-shaped line 14 is available stand.
- the open combustion chamber 10 shown in FIG. 1 stands, especially at the transition to the burner 20 and Heat exchanger 18 through openings 46,48, with which through the Housing 12 formed space 50 in connection.
- an open Combustion chamber 10 to use is used, as usually in room air dependent heaters is used.
- Fig. 2 In the heater shown in Fig. 2 begins channel-shaped line 14 'on the air supply side only before around the area of the fuel supply 53 'in the form of a venturi formed section of the channel-shaped line 14 '.
- the duct In order to the duct is on the air supply side indirectly through the space 50 'with the opening 23' of the housing 12 'in connection.
- the closed trained Combustion chamber 10 ' is in particular at the transition to Burner 20 'and to the heat exchanger 18' through seals 47 ', 49' sealed off from space 50 '.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
Claims (11)
- Heizgerät, insbesondere mit Gasfeuerung, mit Brennstoffund Luftzufuhr und einem in einer Verbrennungskammer (10, 10') angeordneten, von einem Brenner (20,20') beaufschlagten Wärmetauscher (18,18'), wobei die Verbrennungskammer (10,10') über eine Wärmetauscher, wobei die Verbrennungskammer über eine Abgasleitung, in der ein Gebläse (16) angeordnet ist, mit der Atmosphäre in Verbindung steht und die Verbrennungsluft der Verbrennungskammer über eine kanalförmige Leitung (14, 14') zuführbar ist, und wobei die Verbrennungskammer (10,10') innerhalb eines gasdichten Gehäuses (12,12') ausgebildet ist und wobei sich im Verlauf der kanalförmigen Leitung (14,14') Mittel zur Vormischung von Luft und Brennstoff befinden, dadurch gekennzeichnet, daß die kanalförmige Leitung (14) im Einlaßbereich der Luftzufuhr eine kastenförmige Erweiterung (13) zur Aufnahme des Gebläses (16) aufweist.
- Heizgerät nach Anspruch 1, dadurch gekennzeichnet, daß eine offene Verbrennungskammer (10) vorgesehen ist und daß die kanalförmige Leitung (14) auf der Luftzufuhrseite mit einer Öffnung (23) des Gehäuses (12) abschließt.
- Heizgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein Teil des Gehäuses (12) mit seinen Innenwänden (58,59,60) als Begrenzung für die kanalförmige Leitung (14) ausgebildet ist.
- Heizgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verbrennungskammer (10) am Übergang zum Brenner (20), und/oder Wärmeübertrager (18) durch Öffnungen (46,48) mit dem durch das Gehäuse (12) gebildeten Raum (50) in Verbindung steht.
- Heizgerät nach Anspruch 1, dadurch gekennzeichnet, daß eine geschlossene Verbrennungskammer (10') vorgesehen ist und daß die kanalförmige Leitung (14') auf der Zufuhrseite der Verbrennungsluft über den durch die geschlossene Verbrennungskammer (10') und das Gehäuse (12') gebildeten Raum (50') mit einer Öffnung (23') des Gehäuses (12') in Verbindung steht.
- Heizgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß ein Ende der kanalförmigen Leitung (14,14') mit der Unterseite des Brenners (20,20') abschließt.
- Heizgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die kanalförmige Leitung (14,14') im Bereich der Gaszufuhr (54,54') ein Einlaßteil (28,28') mit abnehmenden Querschnitt aufweist, das über eine Engstelle (30,30') in ein Auslaßteil (32,32') mit zunehmenden Querschnitt mündet.
- Heizgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die kanalförmige Leitung (14,14') in Strömungsrichtung hinter der Gaszufuhr (54,54') einen Umlenkbereich (34,34') aufweist, der in einen Abschnitt (38,38') der kanalförmigen Leitung (14,14') mit trichterförmig zunehmenden Querschnitt übergeht.
- Heizgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die kanalförmige Leitung (14,14') in Strömungsrichtung hinter der Gaszufuhr (54,54') einen Erweiterungswinkel ϕ,ϕ' aufweist, der die Druckverluste nach der Engstelle (30,30') minimiert.
- Heizgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das als Verteilerkammer (40,40') ausgebildete brennerseitige Ende der kanalförmigen Leitung (14,14') zum Brenner (20,20') trichterförmig erweitert ist und in seinem Querschnitt im wesentlichen mit der Brennerfläche (42,42') übereinstimmt.
- Heizgerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Gebläse (16,16') dicht hinter dem Abgas-Austritt (44,44') der Verbrennungskammer (10,10') angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19510426 | 1995-03-24 | ||
DE19510426A DE19510426A1 (de) | 1995-03-24 | 1995-03-24 | Heizgerät |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0733853A2 EP0733853A2 (de) | 1996-09-25 |
EP0733853A3 EP0733853A3 (de) | 1998-06-17 |
EP0733853B1 true EP0733853B1 (de) | 2001-11-07 |
Family
ID=7757393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96103626A Expired - Lifetime EP0733853B1 (de) | 1995-03-24 | 1996-03-08 | Heizgerät |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0733853B1 (de) |
DE (2) | DE19510426A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1329980A (fr) * | 1962-07-27 | 1963-06-14 | Perfectionnements aux appareils de chauffage au gaz | |
GB1418867A (en) * | 1971-10-25 | 1975-12-24 | Imp Metal Ind Kynoch Ltd | Gas-fired appliance |
DE3340848A1 (de) * | 1982-11-18 | 1984-08-02 | Joh. Vaillant Gmbh U. Co, 5630 Remscheid | Brennstoffbeheizte waermequelle |
DE3643797A1 (de) * | 1986-12-20 | 1988-06-23 | Walter Dreizler | Atmosphaerisches gasheizgeraet mit externer abgasrueckfuehrung zur no(pfeil abwaerts)x(pfeil abwaerts)-reduzierung |
IT1245564B (it) * | 1990-03-27 | 1994-09-29 | Vaillant Joh Gmbh & Co | Bruciatore atmosferico a gas a premiscelazione |
-
1995
- 1995-03-24 DE DE19510426A patent/DE19510426A1/de not_active Withdrawn
-
1996
- 1996-03-08 EP EP96103626A patent/EP0733853B1/de not_active Expired - Lifetime
- 1996-03-08 DE DE59608097T patent/DE59608097D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59608097D1 (de) | 2001-12-13 |
EP0733853A3 (de) | 1998-06-17 |
DE19510426A1 (de) | 1996-09-26 |
EP0733853A2 (de) | 1996-09-25 |
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