EP0535331B1 - Heizkessel - Google Patents
Heizkessel Download PDFInfo
- Publication number
- EP0535331B1 EP0535331B1 EP92113399A EP92113399A EP0535331B1 EP 0535331 B1 EP0535331 B1 EP 0535331B1 EP 92113399 A EP92113399 A EP 92113399A EP 92113399 A EP92113399 A EP 92113399A EP 0535331 B1 EP0535331 B1 EP 0535331B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- waste gas
- heating boiler
- combustion chamber
- opening
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 206010022000 influenza Diseases 0.000 claims abstract 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 8
- 238000010304 firing Methods 0.000 claims 6
- 239000002912 waste gas Substances 0.000 abstract 9
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 1
Images
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
- F24H1/22—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
- F24H1/28—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 including one or more furnace or fire tubes
- F24H1/285—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 including one or more furnace or fire tubes with the fire tubes arranged alongside the combustion chamber
Definitions
- the invention relates to a boiler for burning liquid or gaseous fuels according to the preamble of the main claim.
- a boiler of the type mentioned is known from EP-A-0 431 314. With such a boiler, the task is solved to be able to provide exhaust gas recirculation with the simplest means and using the structural conditions of such boilers with the least possible design changes.
- connection point between the exhaust gas recirculation pipe and the connection opening on the combustion chamber lock especially since such locks are usually swiveling boiler lock doors, i.e. the sealing of the connection point is difficult because of the pivotability, especially since the lock is no longer accessible when the fire lock is closed can.
- the exhaust gas recirculation pipe cannot be connected with a "noble fit" and in view of thermal expansion of the exhaust gas recirculation pipe, a proper seal in all operating phases of the boiler is in question.
- the invention is therefore based on the object to improve a boiler of the generic type in such a way that on the one hand the sealing of the mouth of the exhaust gas recirculation pipe is guaranteed in all operating states of the boiler and on the other hand the combustion chamber closure can be opened and closed without interference from the engaging exhaust gas recirculation pipe.
- the training forms according to claims 3 and 4 are provided, which also define a predetermined adjustment path for the sealing ring.
- the boiler consists of a water-carrying housing 1, in which a combustion chamber 3 equipped with burner 2 is arranged , from which a plurality of exhaust gas pipes 4 lead to the exhaust gas collection chamber 5, in which exhaust gas displacement bodies 6 are arranged, of which at least in one of the exhaust gas intake pipes 4 the exhaust gas displacement body 6 is designed as an exhaust gas recirculation pipe 20, which opens out towards the exhaust gas collection chamber 5 and whose other end 8 is connected to one Connection opening of the combustion chamber closure 10 provided with a heat insulation body 19 is connected and from there is connected to the burner 2.
- connection opening designed as an engagement opening 9 is dimensioned larger in cross section than the exhaust gas recirculation pipe 20 and that an axially and elastically adjustable sealing ring 21 is arranged in the engagement opening 9, which is guided on the wall of the engagement opening 9, and which is in the closed position of the combustion chamber closure 10 at the end 8 of the exhaust gas pipe 20.
- the possible displacement positions of the sealing ring 21 are indicated by dashed lines in FIG. 2.
- the engagement opening 9 is provided with an outer guide sleeve 23 for the sealing ring 21; a compression spring 25 is arranged between the latter and an abutment 24 on the outer guide sleeve 23.
- the sealing ring 21 is firmly seated on the inflow-side end of a displaceable inner guide sleeve 26, which is provided on the outflow-side end with a stop 27 for the abutment 24.
- the sealing ring 21 is mounted in a profile ring 28 which is arranged on the inner guide sleeve 26 and is rectangular in cross section and is guided with its axially oriented leg 29 in the outer guide sleeve 23.
- the outer guide sleeve 23 is formed at its firebox end in the form of a funnel 30, the actual dimensions of which depend on the actual depth of engagement, the The radius of the combustion chamber closure and the outer diameter of the exhaust gas recirculation pipe 20 must be directed.
- the outer guide sleeve 23 is formed in two parts, and between the two sleeve parts 23 ', 23 ⁇ , the abutment 24 in the form of a ring 31 comprising the inner guide sleeve 26 is attached in a fold 22.
- the fold 22 shown of the sleeve part 23 'does not have to be a circumferential ring fold for receiving the ring 31, but instead, for example, also simple bendable extensions are sufficient.
- the stop 27 of the inner sleeve 26 can be designed in the form of extension tabs, so that the inner sleeve 26, with the ring 31 already inserted and then provided with corresponding flag penetration recesses, together with the compression spring 25, the sealing ring 21 and the sleeve part 23 'from the inside of the Combustion chamber closure 10 can be inserted, after which a recess 32 provided for this purpose in the heat insulating body 19 is filled with a soft insulation pack 19 '.
- the soft insulation packing 19 'in connection with a relatively low radial displaceability of the sealing ring 21 in the fold 22 and also the funnel shape of the end of the sleeve part 23' is of particular importance than when the relevant parts, apart from the axial displaceability of the sealing ring 21, can to a certain extent automatically adjust themselves to their correct assignment.
- the entire sealing device thus adjusts with its sealing ring 21 not only axially to the position of the end 8 of the stationary exhaust gas recirculation pipe 20, but is also 'radially' floating to the sleeve part 23 'in the combustion chamber closure 10 and is pressed also thanks to the funnel 30 in case of inaccuracies in fit and when closing the combustion chamber closure automatically in the correct position, so that the seal is always guaranteed.
Landscapes
- 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)
- Combustion Of Fluid Fuel (AREA)
- Gas Burners (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4132435A DE4132435C1 (cs) | 1991-09-28 | 1991-09-28 | |
DE4132435 | 1991-09-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0535331A1 EP0535331A1 (de) | 1993-04-07 |
EP0535331B1 true EP0535331B1 (de) | 1994-06-15 |
Family
ID=6441754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92113399A Expired - Lifetime EP0535331B1 (de) | 1991-09-28 | 1992-08-06 | Heizkessel |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0535331B1 (cs) |
AT (1) | ATE107406T1 (cs) |
DE (1) | DE4132435C1 (cs) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1199559B (de) * | 1961-07-21 | 1965-08-26 | Steinmueller Gmbh L & C | Ausgleicher fuer Rohrleitungen |
DE3940165C1 (cs) * | 1989-12-05 | 1991-04-18 | Viessmann Werke Gmbh & Co, 3559 Allendorf, De |
-
1991
- 1991-09-28 DE DE4132435A patent/DE4132435C1/de not_active Expired - Fee Related
-
1992
- 1992-08-06 AT AT92113399T patent/ATE107406T1/de not_active IP Right Cessation
- 1992-08-06 EP EP92113399A patent/EP0535331B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE4132435C1 (cs) | 1993-04-22 |
ATE107406T1 (de) | 1994-07-15 |
EP0535331A1 (de) | 1993-04-07 |
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