EP0913642A2 - Brennkammer, insbesondere für Gas-Warmwasserbereiter- und Gas-Heizungsgerätebrenner - Google Patents
Brennkammer, insbesondere für Gas-Warmwasserbereiter- und Gas-Heizungsgerätebrenner Download PDFInfo
- Publication number
- EP0913642A2 EP0913642A2 EP98120067A EP98120067A EP0913642A2 EP 0913642 A2 EP0913642 A2 EP 0913642A2 EP 98120067 A EP98120067 A EP 98120067A EP 98120067 A EP98120067 A EP 98120067A EP 0913642 A2 EP0913642 A2 EP 0913642A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- convector
- thermal insulation
- insulation material
- chamber 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 18
- 238000010438 heat treatment Methods 0.000 title claims 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000012774 insulation material Substances 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 17
- 239000000919 ceramic Substances 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 22
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002775 capsule Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
- F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M2900/00—Special features of, or arrangements for combustion chambers
- F23M2900/05004—Special materials for walls or lining
Definitions
- the invention relates to a combustion chamber, in particular for Gas water heaters and gas heater burners that a at least laterally delimiting the combustion chamber, by an air flow cooled combustion chamber wall made of temperature resistant Have thermal insulation, and the combustion chamber lower-lying gas burner and one arranged above it Has hot water heat exchanger.
- Such an air-cooled combustion chamber is e.g. out DE-PS 3024792 known.
- microporous soft ceramic Air pockets The temperature resistance of such microporous soft ceramic is only up to approx. 900-1000 ° C given.
- the invention proposed that in the combustion chamber before the thermal insulation a steel convector with an elastic shape Rib structure is arranged so that a cooling air flow can flow between the thermal insulation material and the convector.
- the heat is dissipated specifically where the highest undesirable temperature potential acts, namely even before the thermal insulation of the combustion chamber wall.
- To the Example can be by installing the invention proposed convector reach that temperature the thermal insulation of the combustion chamber wall to around 700-800 ° C is lowered so that in terms of thermal insulation and the physiological tolerance of favorable microporous Soft ceramic materials can be used.
- a Possibility is to design the convector so that the cooling air flow rising from the bottom to the top Heat exchangers pass into the exhaust gas stream of the combustion chamber is heated with the same so that the Exhaust gas temperature is raised and the exhaust gases, in particular in the exhaust system, do not fall below the dew point, which prevents condensation.
- the rib structure of the convector may be arranged substantially vertically, whereby the cooling air almost unhindered from bottom to top by the convector can flow.
- the burner's insulation is completely from one Metal, e.g. Steel sheath, sheathed, becomes the convector preferably designed so that the steel jacket around the edges of the ribs of the thermal insulation Connect the convector to the jacket.
- Metal e.g. Steel sheath, sheathed
- the desired heat balance can be obtained in a similar manner taking into account that the distances between the ribs be chosen accordingly.
- the in accordance with the invention Combustion chamber proposed measures the combustion chamber heat insulation improved.
- the physiologically used so far and ecologically questionable, respirable particles emitting combustion chamber insulation materials are avoided. They are not liquid fluids for combustion chamber cooling necessary, which reduces costs and undesirable Have functional risks avoided.
- the invention proposed shape-elastic rib structure of the convector can be inexpensively by a folding process Manufacture sheet steel.
- the features of the burner proposed according to the invention alternatively allow either an increase in exhaust gas temperature or an increase in water efficiency.
- Fig. 1 in a cross-sectional view
- the combustion chamber 1 shown has an overhead one Hot water heat exchanger 4 at least laterally, i.e. in Circumferential direction, surrounding combustion chamber wall, one under the Hot water heat exchanger 4 arranged gas burner 3, a unspecified housing and one with the housing connected exhaust gas guide plate 11 arranged in the exhaust gas path on.
- Fig. 1 is in a to the left of a vertical dashed line Centerline first embodiment I and one second embodiment II to the right of this line divided.
- the two embodiments I and II differ that in the left embodiment I the one formed in the form of an elastic rib structure steel convector 6 vertically arranged air channels 9 so has that the cooling air L am flowing therethrough Heat exchanger 4 passed directly into the exhaust gas stream becomes, while in the embodiment shown on the right II the rib structure of the steel convector 7 in this way is designed so that the formed by the rib structure vertical air channels 9 still the cooling air flow L ' through an edge region of the hot water heat exchanger 4 conduct and thereby increase the water efficiency ⁇ .
- FIG. 1 two embodiments I and II shown in FIG.
- the combustion chamber 1 has the combustion chamber wall from the outside in one of a steel capsule 8 encased thermal insulation material 5, the air channels 9 mentioned and the above-mentioned, as a shape-elastic rib structure designed, steel convector 6 and 7 respectively.
- the thermal insulation 5 can in the illustrated Embodiments of the invention from an inexpensive and ecologically and physiologically harmless microporous Soft ceramic material with air pockets, which, however, is not particularly stable thermally. If the Thermal insulation made of a harder ceramic material microporous structure, which can lead to the inside of the Combustion chamber 1 facing wall of the steel jacket 8 possibly omitted if the insulation material is sufficient has mechanical stability.
- FIG. 1A The section shown in Fig. 1A through the The combustion chamber wall lies in a plane A-A which is shown in FIG. 1 parallel plane, i.e. perpendicular to the cutting plane of Fig. 1.
- Fig. 1A clearly shows that individual vertical air channels 9 through the rib structure of the elastic convector 6 or 7 are formed so that the cooling air flowing through the channels 9 into a variety individual air flows is divided and the ribs steel convector 6, 7 has a large cooling surface to lend.
- the number of ribs 10 or the number of individual channels 9 plays a role in the reaching heat balance. It can be clearly seen that the outwardly facing edges of the ribs 10 on the Inner wall of the jacket 8 surrounding the thermal insulation material 5 issue.
- FIG. 1B The enlarged representation of the combustion chamber wall in Fig. 1B shows the shape-elastic rib structure of the convector 6, 7 more clear.
- Such a forming an elastic rib structure steel convector can be inexpensive by folding or Pulling a steel sheet to be made.
- the convector sets up a maximum temperature level the thermal insulation side of less than 700-800 ° C.
- This form-elastic convector also has a heat-equalizing effect. This is one of the conditions for use of steel as the combustion chamber wall material in gas water heater burners and gas heater burners. So that is the prerequisite for use more cost-effective and Functionally suitable and harmless thermal insulation materials Fulfills.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Gas Burners (AREA)
- Air Supply (AREA)
Abstract
Description
Claims (10)
- Brennkammer, insbesondere für Gas-Warmwasserbereiter- und Gas-Heizungsgerätebrenner, die eine die Brennkammer (1) wenigstens seitlich begrenzende, durch eine Luftströmung (L, L') gekühlte Brennkammerwand (5, 6, 7, 8) aus temperaturfestem Wärmedämmstoff aufweisen, und die Brennkammer (1) einen tieferliegenden Gasbrenner (3) und einen darüber angeordneten Warmwasser-Wärmeübertrager (4) aufweist,
dadurch gekennzeichnet, daß in der Brennkammer (1) vor dem Wärmedämmstoff (5) ein stählerner Konvektor (6; 7) mit einer formelastischen Rippenstruktur (10; 10') angeordnet ist, der im Betrieb von einem Kühlluftstrom (L, L') durchströmt werden kann. - Brennkammer nach Anspruch 1, dadurch gekennzeichnet, daß der Konvektor (6; 7) derart gestaltet ist, daß die Temperatur an dem Wärmedämmstoff der Brennkammerwand auf etwa 700-800°C abgesenkt ist.
- Brennkammer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Konvektor (6) derart gestaltet ist, daß der Kühlluftstrom (L) am Wärmeübertrager (4) vorbei in den Abgasstrom der Brennkammer (1) unter Erwärmung desselben geleitet wird (Fig. 1 I).
- Brennkammer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Konvektor (7) derart gestaltet ist, daß der Kühlluftstrom (L') einen Randabschnitt des Wärmeübertragers (4) durchströmt (Fig. 1 II).
- Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Rippenstruktur (10, 10') des Konvektors (6, 7) im wesentlichen senkrecht angeordnet ist.
- Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Wärmedämmstoff (5) vollständig von einem stählernen Mantel (8) umgeben ist und daß die zum Mantel (8) weisenden Kanten der Rippen (10, 10') des Konvektors (6, 7) am Mantel anschließen.
- Brennkammer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Wärmedämmstoff (5) zum Konvektor hin freiliegt und daß die Kanten der Rippen (10, 10') desselben am Wärmedämmstoff anstehen.
- Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Rippen (10, 10') des Konvektors (6, 7) durch Falzen oder Ziehen eines Stahlblechs gebildet sind.
- Brennkammer nach Anspruch 8, dadurch gekennzeichnet, daß die Weite (S, S') eines beim Falz- oder Ziehvorgang gebildeten, zum Inneren der Brennkammer weisenden Spalts (12) zwischen den Rippenwänden in Abhängigkeit vom gewünschten Ziel in der Wärmebilanz einstellbar ist.
- Brennkammer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Abstände zwischen den Rippen (10) und damit die Weite der luftdurchströmten Kanäle des Konvektors (6, 7) abhängig vom gewünschten Ziel in der Wärmebilanz einstellbar ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19748261 | 1997-10-31 | ||
| DE19748261A DE19748261B4 (de) | 1997-10-31 | 1997-10-31 | Brennkammer, insbesondere für Gas-Warmwasserbereiter- und Gas-Heizungsgerätebrenner |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0913642A2 true EP0913642A2 (de) | 1999-05-06 |
| EP0913642A3 EP0913642A3 (de) | 2000-05-03 |
| EP0913642B1 EP0913642B1 (de) | 2003-09-03 |
Family
ID=7847294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98120067A Expired - Lifetime EP0913642B1 (de) | 1997-10-31 | 1998-10-23 | Brennkammer, insbesondere für Gas-Warmwasserbereiter- und Gas-Heizungsgerätebrenner |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0913642B1 (de) |
| AT (1) | ATE249012T1 (de) |
| DE (2) | DE19748261B4 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944685A (zh) * | 2019-12-10 | 2021-06-11 | 芜湖美的厨卫电器制造有限公司 | 换热器和燃气设备 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3024792C2 (de) | 1979-07-13 | 1988-09-08 | E.L.M. Leblanc, Drancy, Fr |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4020772A (en) * | 1976-01-22 | 1977-05-03 | The Lummus Company | Process to protect process heater casing from corrosion |
| US4501232A (en) * | 1983-10-03 | 1985-02-26 | Purex Pool Products, Inc. | Pool or spa water heater |
| DE4119993A1 (de) * | 1991-06-18 | 1992-12-24 | Forsch Anorganische Werkstoffe | Ofenauskleidung |
| AT400485B (de) * | 1992-04-07 | 1996-01-25 | Vaillant Gmbh | Ungekühlter brennkammerschacht zur führung von brenngasen eines brenners |
| DE19601012A1 (de) * | 1996-01-13 | 1997-07-17 | Bosch Gmbh Robert | Verfahren zur Anhebung der Abgastemperatur eines Wassererhitzers |
-
1997
- 1997-10-31 DE DE19748261A patent/DE19748261B4/de not_active Expired - Fee Related
-
1998
- 1998-10-23 DE DE59809474T patent/DE59809474D1/de not_active Expired - Fee Related
- 1998-10-23 EP EP98120067A patent/EP0913642B1/de not_active Expired - Lifetime
- 1998-10-23 AT AT98120067T patent/ATE249012T1/de not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3024792C2 (de) | 1979-07-13 | 1988-09-08 | E.L.M. Leblanc, Drancy, Fr |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944685A (zh) * | 2019-12-10 | 2021-06-11 | 芜湖美的厨卫电器制造有限公司 | 换热器和燃气设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19748261A1 (de) | 1999-07-01 |
| ATE249012T1 (de) | 2003-09-15 |
| DE59809474D1 (de) | 2003-10-09 |
| EP0913642A3 (de) | 2000-05-03 |
| DE19748261B4 (de) | 2004-11-11 |
| EP0913642B1 (de) | 2003-09-03 |
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