EP1099906B1 - Heating appliance with premix burner - Google Patents
Heating appliance with premix burner Download PDFInfo
- Publication number
- EP1099906B1 EP1099906B1 EP00122574A EP00122574A EP1099906B1 EP 1099906 B1 EP1099906 B1 EP 1099906B1 EP 00122574 A EP00122574 A EP 00122574A EP 00122574 A EP00122574 A EP 00122574A EP 1099906 B1 EP1099906 B1 EP 1099906B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing chamber
- heating appliance
- appliance according
- air
- inlet
- 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
Links
Images
Classifications
-
- 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
- F23D14/62—Mixing devices; Mixing tubes
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2210/00—Noise abatement
Definitions
- the invention relates to a heater with a through Fuel-air mixture fed burner after the Preamble of claim 1.
- DE 2 117 337 discloses a heater with a burner Combustion air through two inlet openings for a manifold for the fuel-air mixture are supplied.
- the heater according to the invention with the characteristic Features of claim 1 has the advantage that with simple The occurrence of resonance vibrations is minimized or is prevented, so that disturbing noises remain under.
- the invention enables that with a only damping device in the intake tract the occurrence is effectively combated by disturbing resonance vibrations.
- FIG. 1 shows a Embodiment of an intake tract 10 for one Fan-assisted gas burner shown in more detail Heater having multiple inlet channels 14 of different lengths, with air in Flows in the direction of the arrow into a mixing chamber 16.
- the Mixing chamber 16 also carries a fuel feed pipe 18, through which, for example, fuel gas is introduced.
- the fuel gas is mixed with air, so that on the output side there is a fuel-air mixture which the arrows 19 is marked.
- the fuel-air mixture is fed to the gas burner and there burned.
- FIG. 2 shows a blower unit 21 provided that the fuel-air mixture does not shown gas burner conducts.
- the blower unit 21 is on the inflow side with an annular flange 22 on which a damping device 12, for example by means of a Bayonet connection 23 is coupled.
- the ring flange 22 encloses a fan-side chamber 24, which adjoins a Chamber 25 of the damping device 12 connects.
- the Chambers 24 and 25 together form the mixing chamber 16.
- the damping device 12 has a pot-like housing 30 with a first Housing section 33 and a second housing section 34 on.
- the first housing section 33 has the shape of a Hollow cylinder section with a bottom distant from the mixing chamber 31 and a bottom 32 near the mixing chamber.
- the second Housing section 34 is from an extension of floor 32 near the mixing chamber and is limited by one surrounded cylindrical housing wall 35.
- the cylindrical Housing wall 35 encloses the chamber 25.
- bayonet connection elements 36 On the housing wall 35 are also formed on bayonet connection elements 36, the the bayonet connection 23 on the ring flange 22 of the Realize blower unit 21.
- first inlet channels 41 and second inlet channels 42 are also inlet channels 41 and second inlet channels 42 arranged.
- the first Inlet channels 41 lead from floor 31 remote from the mixing chamber trained inlet-side openings 44 to in Floor 32 near the mixing chamber is formed on the outlet side Openings 45.
- a bimetallic element 50 On the inside of the bottom 32 near the mixing chamber is according to Figure 5 also arranged a bimetallic element 50, the for example one of the three further openings 47 Closes or opens depending on the temperature.
- the bimetallic element 50th is designed such that it increases with increasing temperature Appropriate opening opens, so that with increasing Temperature of the combustion air is the volume fraction of the Combustion air increases and vice versa.
- the damping device 12 is compact and for example made of plastic using injection molding technology manufactured. But it is equally conceivable that Damping device 12 as a die-cast part, for example To produce aluminum.
- the Inlet channels 41, 42 are substantially concentric with the Fuel supply pipe 18 are arranged.
- the different inlet channels 41, 42 or openings 44, 45 and 47 in front of the mixing chamber 16 different lengths of Air columns formed in the intake tract, on several Different resonance frequencies have a dampening effect.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Description
Die Erfindung betrifft ein Heizgerät mit einem durch ein
Brennstoff-Luftgemisch gespeisten Brenner nach dem
Oberbegriff des Anspruchs 1.The invention relates to a heater with a through
Fuel-air mixture fed burner after the
Preamble of
Die Entwicklung bei Heizgeräten konzentriert sich in den letzten Jahren auf eine Optimierung des Verbrennungsprozesses, um die gestiegenen Anforderungen bezüglich Wirkungsgrad und Schadstoffemission zu erfüllen. Bei modernen Gas-Heizgeräten werden beispielsweise überstöchiometrisch vormischende Flächenbrenner eingesetzt. Charakteristisch für diese Brenner ist die Ausbildung eines aus einer Vielzahl von kurzen, flachen Flammen bestehenden Flammenteppichs.The development of heaters is concentrated in the in recent years to optimize the Combustion process to meet the increased requirements in terms of efficiency and pollutant emissions. With modern gas heaters, for example over-stoichiometric premixing surface burners are used. The formation of one is characteristic of these burners consisting of a variety of short, flat flames Flame carpet.
Insbesondere bei Gebläsebrennern und gebläseunterstützten Brennern treten unterschiedliche Phänomene von schwingenden Flammen auf, die bei bestimmten Betriebsbedingungen und Geräteabmessungen Resonanzschwingungen erzeugen, die zu kräftig schwingenden Luftsäulen und dadurch zu störenden Geräuschen führen können. Um derartige Schwingungen zu dämpfen, werden beispielsweise im Ansaug- und Abgastrakt der Heizgeräte verschiedene Maßnahmen angewandt. DE 2 117 337 offenbart ein Heizgerät mit einem Brenner wobei Verbrennungsluft durch zwei Einlassöffnungen einem Verteilerrohr für das Brennstoff-Luftgemisch zugeführt werden.Especially for fan burners and fan-assisted Burners experience different phenomena from vibrating Flames that occur under certain operating conditions and Device dimensions generate resonance vibrations that too strong vibrating columns of air and thereby disturbing Can cause noises. To such vibrations too dampen, for example, in the intake and exhaust tract Heaters various measures applied. DE 2 117 337 discloses a heater with a burner Combustion air through two inlet openings for a manifold for the fuel-air mixture are supplied.
Das erfindungsgemäße Heizgerät mit den kennzeichnenden
Merkmalen des Anspruchs 1 hat den Vorteil, daß mit einfachen
Mitteln das Auftreten von Resonanzschwingungen minimiert
oder verhindert wird, so daß störende Geräusche
unterbleiben. Die Erfindung ermöglicht es, daß mit einer
einzigen Dämpfungseinrichtung im Ansaugtrakt das Auftreten
von störenden Resonanzschwingungen wirksam bekämpft wird.The heater according to the invention with the characteristic
Features of
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der Erfindung möglich. Durch die konzentrische Anordnung der Lufteinlaßöffnungen um das Brennstoffzuführrohr wird eine äußerst kompakte Bauweise des Ansaugtraktes ermöglicht, der dadurch nur einen geringen Platzbedarf benötigt. Zur Optimierung der Verbrennung wird außerdem durch ein Bimetallelement der Volumenanteil der Verbrennungsluft geregelt. Eine kompakte Ausführung des Ansaugtraktes wird mittels einer Dämpfungseinrichtung erreicht, die mittels einer Bajonettverbindung an die Mischkammer ankoppelbar ist.By the measures listed in the subclaims advantageous developments and improvements to Invention possible. Due to the concentric arrangement of the Air inlet openings around the fuel supply pipe becomes one extremely compact design of the intake tract enables the therefore requires only a small amount of space. to Combustion optimization is also achieved through a Bimetal element is the volume fraction of the combustion air regulated. A compact version of the intake tract is achieved by means of a damping device which a bayonet connection can be coupled to the mixing chamber.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.Embodiments of the invention are in the drawing shown and in the description below explained.
Es zeigen:
Figur 1- eine Prinzipdarstellung eines ersten Ausführungsbeispiels eines Ansaugtraktes eines erfindungsgemäßen Heizgerätes,
- Figur 2
- eine Teilschnittdarstellung mit einem weiteren Ausführungsbeispiel eines Ansaugtraktes,
- Figur 3
- eine Draufsicht auf den in Figur 2 dargestellten Ansaugtrakt,
- Figur 4
- eine Schnittdarstellung nach der Linie IV-IV in Figur 3,
- Figur 5
- eine Schnittdarstellung nach der Linie V-V in Figur 3 und
- Figur 6
- eine Seitenansicht des in Figur 3 dargestellten Ansaugtraktes.
- Figure 1
- 2 shows a basic illustration of a first exemplary embodiment of an intake tract of a heating device according to the invention,
- Figure 2
- 2 shows a partial sectional view with a further exemplary embodiment of an intake tract,
- Figure 3
- 3 shows a plan view of the intake tract shown in FIG. 2,
- Figure 4
- 3 shows a sectional illustration along the line IV-IV in FIG. 3,
- Figure 5
- a sectional view along the line VV in Figure 3 and
- Figure 6
- a side view of the intake tract shown in Figure 3.
Die in Figur 1 dargestellte Prinzipskizze zeigt ein
Ausführungsbeispiels eines Ansaugtraktes 10 für einen nicht
näher dargestellten, gebläseunterstützten Gasbrenner eines
Heizgerätes, der mehrere Einlasskanäle 14 mit
unterschiedlicher Länge aufweist, wobei Luft in
Pfeilrichtung in eine Mischkammer 16 einströmt. In die
Mischkammer 16 führt weiterhin ein Brennstoffzuführrohr 18,
über das beispielsweise Brenngas eingeleitet wird. In der
Mischkammer 16 wird das Brenngas mit Luft vermischt, so daß
ausgangsseitig ein Brennstoff-Luftgemisch vorliegt, das mit
den Pfeilen 19 gekennzeichnet ist. Das Brennstoff-Luftgemmisch
wird dem Gasbrenner zugeführt und dort
verbrannt. The schematic diagram shown in Figure 1 shows a
Embodiment of an
Ein weiteres Ausführungsbeispiel eines Ansaugtraktes 10
zeigt Figur 2. Dabei ist zusätzlich eine Gebläseeinheit 21
vorgesehen, die das Brennstoff-Luftgemisch zu dem nicht
dargestellten Gasbrenner leitet. Die Gebläseeinheit 21 ist
zuströmseitig mit einem Ringflansch 22 ausgeführt, an dem
eine Dämpfungseinrichtung 12 beispielsweise mittels einer
Bajonettverbindung 23 angekoppelt ist. Der Ringflansch 22
umschließt eine gebläseseitige Kammer 24, die sich an eine
Kammer 25 der Dämpfungseinrichtung 12 anschließt. Die
Kammern 24 und 25 bilden zusammen die Mischkammer 16.Another embodiment of an
Eine detaillierte Darstellung einer möglichen
Ausführungsform der Dämpfungseinrichtung 12 geht aus den
Figuren 3 bis 6 hervor. Die Dämpfungseinrichtung 12 weist
ein topfähnliches Gehäuse 30 mit einem ersten
Gehäuseabschnitt 33 und einem zweiten Gehäuseabschnitt 34
auf. Der erste Gehäuseabschnitt 33 besitzt die Gestalt eines
Hohlzylinderabschnitts mit einem mischerkammerfernen Boden
31 und einem mischkammernahen Boden 32. Der zweite
Gehäuseabschnitt 34 wird von einer Verlängerung des
mischkammernahen Bodens 32 begrenzt und ist von einer
zylindrischen Gehäusewand 35 umgeben. Die zylindrische
Gehäusewand 35 umschließt die Kammer 25. An der Gehäusewand
35 sind ferner Bajonettverbindungselemente 36 angeformt, die
die Bajonettverbindung 23 am Ringflansch 22 der
Gebläseeinheit 21 realisieren.A detailed description of a possible
Embodiment of the
Im Zentrum des mischkammernahen Bodens 31 befindet sich eine
zentrale Öffnung 37 mit beispielsweise drei in die Öffnung
ragenden Stegen 38, zwischen denen das Brennstoffzuführrohr
18 geklemmt ist. Dadurch bildet sich zwischen der Außenwand
des Brennstoffzuführrohres 18 und dem äußeren Durchmesser
der Öffnung 37 zwischen den Stegen 38 ein nicht näher
dargestellter Spalt aus, durch den zusätzlich Luft in die
Kammer 25 einströmen kann. In the center of the
In dem Gehäuse 30 sind ferner erste Einlasskanäle 41 und
zweite Einlasskanälen 42 angeordnet. Die ersten
Einlasskanäle 41 führen von am mischkammerfernen Boden 31
ausgebildeten einlaßseitigen Öffnungen 44 zu im
mischkammernahen Boden 32 ausgebildeten auslaßseitigen
Öffnungen 45. Beim vorliegenden Ausführungsbeispiel
existieren fünf Einlasskanäle 41.In the
Außerhalb des ersten Gehäuseabschnitts 33 sind ferner im
mischkammernahen Boden 32 beispielsweise drei weitere
Öffnungen 47 angeordnet, die die zweiten Einlasskanäle 42
bilden. Die weiteren Öffnungen 47 führen somit unmittelbar
in die angrenzende Kammer 25.Outside of the
An der Innenseite des mischkammernahen Bodens 32 ist gemäß
Figur 5 ferner ein Bimetallelement 50 angeordnet, das
beispielsweise eine der drei weiteren Öffnungen 47
temperaturabhängig schließt oder öffnet. Durch diese
Anordnung wird eine temperaturabhängige Regelung der
Verbrennungsluft geschaffen, wobei das Bimetallelement 50
derart ausgebildet ist, daß es mit steigender Temperatur die
entsprechende Öffnung freigibt, so daß mit steigender
Temperatur der Verbrennungsluft der Volumenanteil der
Verbrennungsluft zunimmt und umgekehrt.On the inside of the
Die Dämpfungseinrichtung 12 ist kompakt ausgebildet und
beispielsweise aus Kunststoff in Spritzgußtechnik
hergestellt. Es ist aber genauso denkbar, die
Dämpfungseinrichtung 12 als Druckgußteil beispielsweise aus
Aluminium herzustellen.The damping
Durch die verschiedenen Einlasskanälen 41 und 42 wird eine
Auffächerung des Ansaugquerschnitts erzeugt, wobei die
Einlasskanäle 41, 42 im wesentlichen konzentrisch um das
Brennstoffzuführrohr 18 angeordnet sind. Durch die
verschiedenen Einlasskanäle 41, 42 bzw. Öffnungen 44, 45 und
47 werden vor der Mischkammer 16 unterschiedliche Längen von
Luftsäulen im Ansaugtrakt ausgebildet, die auf mehrere
verschiedene Resonanz-Frequenzen dämpfend wirken. Außerdem
wird durch die Anordnung der Öffnungen 44, 45 und 47 die
Luft verteilt in die Mischkammer 16 eingeleitet, so daß eine
gleichmäßige Vermischung der Luft mit dem Brennstoff
stattfindet.Through the
Claims (9)
- Heating appliance with a burner which is fed by a fuel/air mixture and a mixing chamber (16) which is connected upstream of the burner and in which the fuel is mixed with the combustion air, the combustion air being directed into the mixing chamber (16) via an intake section (10), and the intake section (10) has at least two inlet openings (44, 47) for the combustion air, characterized in that air columns of different lengths are formed in the inlet openings (44, 47) upstream of the mixing chamber (16).
- Heating appliance according to Claim 1, characterized in that inlet ducts (41, 42) of different lengths are assigned to the inlet openings (44, 47), the air columns being formed in said inlet ducts (41, 42).
- Heating appliance according to Claim 1 or 2, characterized in that the intake section (10) has a further, essentially centrally arranged opening (37) in which a fuel feed pipe (18) is arranged via which the fuel is introduced into the mixing chamber (16).
- Heating appliance according to Claim 3, characterized in that circular segment slots which are distributed uniformly about the fuel feed pipe (18) and via which the combustion air additionally flows into the mixing chamber (16) are formed.
- Heating appliance according to Claim 3, characterized in that a plurality of inlet openings (44, 47) are arranged essentially concentrically around the fuel feed pipe (18).
- Heating appliance according to Claim 1, characterized in that the intake section (10) has a damping device (12) with a housing (30) with a first housing section (33) and a second housing section (34), the first inlet duct (41) with the longer air column being formed in the first housing section (33), and the second inlet duct (42) with the shorter air column being formed in the second housing section (34).
- Heating appliance according to Claim 6, characterized in that a plurality of first inlet ducts (41) for the long air columns are provided, which lead within the first housing section (33) from a bottom (31) which is remote from the mixing chamber to a bottom (32) which is near to the mixing chamber.
- Heating appliance according to Claim 6, characterized in that a plurality of second inlet ducts (42) for the short air columns are provided, which are formed by further inlet openings (47) which are arranged in the bottom (32) which is near to the mixing chamber.
- Heating appliance according to one of the preceding claims, characterized in that the damping device (12) is connected by means of bayonet connection elements (36) to a blower unit (21) which is connected upstream of the burner.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19954287 | 1999-11-11 | ||
DE19954287A DE19954287C2 (en) | 1999-11-11 | 1999-11-11 | Heater with a burner powered by a fuel-air mixture |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1099906A1 EP1099906A1 (en) | 2001-05-16 |
EP1099906B1 true EP1099906B1 (en) | 2004-02-11 |
Family
ID=7928695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00122574A Expired - Lifetime EP1099906B1 (en) | 1999-11-11 | 2000-10-17 | Heating appliance with premix burner |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1099906B1 (en) |
CN (1) | CN1135320C (en) |
DE (2) | DE19954287C2 (en) |
ES (1) | ES2215540T3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007053028B4 (en) * | 2007-11-05 | 2013-04-11 | Honeywell Technologies S.A.R.L. | Apparatus for providing a gas / combustion air mixture for a gas burner |
US8512035B2 (en) | 2010-03-09 | 2013-08-20 | Honeywell Technologies Sarl | Mixing device for a gas burner |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPD20010071A1 (en) * | 2001-03-23 | 2002-09-23 | Sit La Precisa Spa | CONNECTION SYSTEM OF AN AIR-GAS MIXER WITH A FAN, IN PARTICULAR FOR GAS BOILERS AND SIMILAR EQUIPMENT |
DE10326267B4 (en) * | 2003-06-11 | 2005-05-04 | Robert Bosch Gmbh | Gas mixing device for a gas burner and method for operating the same |
WO2012069534A1 (en) * | 2010-11-26 | 2012-05-31 | Bekaert Combustion Technology B.V. | Burner with secondary axial flow elements |
CN102944015B (en) * | 2012-10-29 | 2015-09-09 | 中国科学技术大学 | A kind of injection preheating type flameless burner |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3661493A (en) * | 1970-08-03 | 1972-05-09 | Washington Gas Light Co | Process and apparatus for repelling spiders in gas appliances |
DE2117337C3 (en) * | 1971-04-08 | 1978-04-20 | Robert Bosch Gmbh, 7000 Stuttgart | Burners for gas-fired devices |
DE2263471C3 (en) * | 1972-12-27 | 1975-11-27 | Joh. Vaillant Kg, 5630 Remscheid | Silencer designed as a Helmholtz resonator for a device gas burner |
AT361100B (en) * | 1976-09-09 | 1981-02-25 | Voest Ag | HEATING BURNER |
US4464314A (en) * | 1980-01-02 | 1984-08-07 | Surovikin Vitaly F | Aerodynamic apparatus for mixing components of a fuel mixture |
US5165241A (en) * | 1991-02-22 | 1992-11-24 | General Electric Company | Air fuel mixer for gas turbine combustor |
DE19730254C2 (en) * | 1996-07-09 | 2002-01-03 | Vaillant Joh Gmbh & Co | Fuel-heated heater |
DE19749510A1 (en) * | 1997-11-08 | 1999-05-12 | Buderus Heiztechnik Gmbh | Mixer for mixing inflammable gas and air |
DE29911878U1 (en) * | 1999-07-08 | 1999-11-18 | Buderus Heiztechnik Gmbh, 35576 Wetzlar | burner |
-
1999
- 1999-11-11 DE DE19954287A patent/DE19954287C2/en not_active Expired - Fee Related
-
2000
- 2000-10-17 EP EP00122574A patent/EP1099906B1/en not_active Expired - Lifetime
- 2000-10-17 DE DE50005254T patent/DE50005254D1/en not_active Expired - Lifetime
- 2000-10-17 ES ES00122574T patent/ES2215540T3/en not_active Expired - Lifetime
- 2000-11-11 CN CNB001353063A patent/CN1135320C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007053028B4 (en) * | 2007-11-05 | 2013-04-11 | Honeywell Technologies S.A.R.L. | Apparatus for providing a gas / combustion air mixture for a gas burner |
US8512035B2 (en) | 2010-03-09 | 2013-08-20 | Honeywell Technologies Sarl | Mixing device for a gas burner |
Also Published As
Publication number | Publication date |
---|---|
EP1099906A1 (en) | 2001-05-16 |
DE19954287A1 (en) | 2001-06-21 |
CN1298073A (en) | 2001-06-06 |
DE50005254D1 (en) | 2004-03-18 |
ES2215540T3 (en) | 2004-10-16 |
DE19954287C2 (en) | 2001-10-11 |
CN1135320C (en) | 2004-01-21 |
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