CA1084363A - Heating boiler for oil or gas firing and solid fuel firing - Google Patents
Heating boiler for oil or gas firing and solid fuel firingInfo
- Publication number
- CA1084363A CA1084363A CA282,273A CA282273A CA1084363A CA 1084363 A CA1084363 A CA 1084363A CA 282273 A CA282273 A CA 282273A CA 1084363 A CA1084363 A CA 1084363A
- Authority
- CA
- Canada
- Prior art keywords
- combustion
- chamber
- combustion chamber
- boiler
- boiler water
- 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
Links
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
- F24H1/46—Water heaters having plural combustion chambers
-
- 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
-
- 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
- F24H1/48—Water heaters for central heating incorporating heaters for domestic water
- F24H1/50—Water heaters for central heating incorporating heaters for domestic water incorporating domestic water tanks
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)
Abstract
ABSTRACT OF THE DISCLOSURE
A boiler with separate combustion chambers and separate flues from each chamber, one chamber designed to burn solid fuel allow another chamber designed to burn oil or gas. The separate chambers and flues allow an eff-icient operation of the boiler since there will be little or no combustion residue deposited in the flue of the oil or gas combustion chamber which would adversly affect the rate of heat exchange or flow of the exhaust gases therethrough and a larger solid fuel fired combustion chamber could be pro-vided with larger heat exchange passages which can be cleaned easily.
A boiler with separate combustion chambers and separate flues from each chamber, one chamber designed to burn solid fuel allow another chamber designed to burn oil or gas. The separate chambers and flues allow an eff-icient operation of the boiler since there will be little or no combustion residue deposited in the flue of the oil or gas combustion chamber which would adversly affect the rate of heat exchange or flow of the exhaust gases therethrough and a larger solid fuel fired combustion chamber could be pro-vided with larger heat exchange passages which can be cleaned easily.
Description
3~3 The present invention relates to boilers which are fired by both solid fuel and oil or gas burnersO
In heating plants which are burner fired~ especially with oil firing, it is frequently convenient or necessary to also burn solid fuels.
Constructing an additional separate solid fuel boiler along side the oil fired boiler, including coupling water connections onto the back of the boiler and exhaust flues is not only very expensive but also requires com- ;
plicated shut-off ~echanisms in the water connections and in the flues which must be adjusted depending upon the type of fuel used. ~s a result double-fired boilers have been produced which contain separate combustion chambers for the oil firing and for solid fuelsO These known double-fired boilers always have common ancillary heating surfaces~ that is to say the exhaust fumes departing from the combustion chambers act on the same ancillary heat-ing surfaces over the major part of their paths, at least in the important final portion of the duct. For example it is known that in boilers of normal dimensions~ a smaller burner firing combustion chamber can be arranged in a larger solid fuel combustion chamber and the smaller combustion chamber opens out with a connection passage into the solid fuel combustion chamber, so as to allow the exhaust from the burner firing to flow through the heating surfaces in the solid fuel combustion chamber and out its exhaust flueO
These common heating surfaces of the known dcùble-fired boilers have the dis-advantage that ashes and other combustion residues soil the ancillary heating surfacesO mis has a very disadvantageous and unfavourable effect upon the oil or gas firing~ wbich represents the normal type of firing of the double- -fired boiler~ since the build-up of soot and residue makes the burner much less effici`entO Soot and combustion residue deposits can also block the common flues and thus have extremely disadvantageous effects upon the pressure and flow conditions necessary for satisfactory burner operationO The common flues of the known double-fired boilers would therefore have to be formed with a larger lnternal heat exchange surface area so that burning of wood ~ ~8~363 or other solid fuels which produce a great deal of ash and other cambustion residues, the burner fired operation could continue without separate boiler cl~aning. In any case, the build up of residue and soot deposits is not desirable in an oil or gas fired boiler.
According to one aspect the invention is a double-fired heating boiler adapted to be fired selectively by oil, gas or a sGlid fuel, cGmpris-ing: a boiler water chamber; first and second cambustion chambers horizon-tally spaced from one another ~ithin said boiler water chamber and adapted respectively to be oil or gas-fired and solid fuel-fired, said first comr bustion chamber having a height less than the height of said second comb~ls-tion chamker, said boiler water chamber having a portion vertically disposed in superimposed relationship over said first combustion chamber and horizon-tally disposed laterally of the upper portion of said second combustion chamber; a collector member for the combustion gases of said first and second co~bustion chambers; a first conduit passage having heat exchange surfaces connected to said first conbustion chamber and extending through said boiler water chamber and terminating in said common ccmbustion gas collector member; a second conduit passage having heat exchange surfaces connected to said second combustion chamber and extending through said boiler wa~er chamber and terminating in said ccmmon combustion gas collector member; said first and second conduit passages extending co~pletely separate-ly frGm said first and second combustion chambers respectively and through said boiler water chamber to said common combustion gas collector member;
said first conduit passage having a horizontal section extending within said boiler water chamber portion, said horizontal section being superimpcsed over said first combustion chamker and communicating at the front end of said heating boiler with said first ~ombustion cha~ber and at the rear end of said heating boiler with said collector me~ber, said second conduit passage ccmr prising a horizontally e3~ending section within said boiler water chamber portion superimposed over said first combustion chamber and communicating ~ith said second combustion chamber and lying in superimposed spaced rela-tionship to the horizontal conduit section of said first conduit passage.
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According to a second aspect the in~enlion is a double-fired heating boiler adapted to be fired sPleclively by oil, gas or a solid fuel, comprising: a boiler water chamber; first and second comblstion chambers positioned side-by-side within said boiler water chamber and adapted respec-tively to be oil or gas-fired and solid fuel-fired; a common collector member for the combustion gases of said first and second combustion chambers; a first conduit passage having heat exchange surfaces connected to said first cQmbustion chamber and extending through said boiler water chamber and terninating in said ccmmon comhustion gas collector member; a second conduit passage having heat exchange surfaces connected to said second combustion cha~ber ard extending through said boiler water chamber and termQnating in said ccmmon cQmbustion gas collector member; said first and second conduit passages extending completely separately from said ~irst and sPcond combus- ~
tion chamber respectively and through said boiler water chamber to said -ccmmon combustion gas collector member; said first conduit passage extending horizontally within said boiler water chamber and situated above said first cQmbustion chamber-~and communicating at the front end of said heating boiler with said first combustion chamber and at the rear end of said heating boiler with said collector me~ber, said second conduit passage including a horizon-~lly extending sectiQn communicating with said second combustion chamker and lying in superimposed spaced relation to the horizontal conduit passage for said first combustion chamber; said second conduit passage for said second cc~bustion chamber including a vertically extending section connected to said second combustion cham~er and to said horizontally extending section and wherein said v~rtically extending section is positioned ketween said first and second ccmbustion chambers and is in cQmmunication with the lcwer region of said second cQmbustion chamber.
Thus in the boiler according to the invention, both the combustion chambers ard the flues which act as ancillary heating surfaces for the oil - 30 or gas firing and for the solid fuels, are ccmpletely separate from one another-as far as the co~mon collector of the boiler to which an exhaust with-drawal pipe is attached. mus contamination of the ancillary heating sur-,. ~
,, . ' -faces for the oil or gas firing by the ash or other ccmbustion residues occurring in solid fuel firing is completely avoided, so that constantly high efficiencies and econamy are guaranteed for the oil or gas firing system.
Moreover the exhaust flues and the ancillary heating surfaces formed by them are ir.dividually formed with the configuration, length and cross-sectior~l width which are most expedient and favourable for the burner operation on the one hand and for the solid fuel firing on the other. Thus by way of example the first flue for the solid fuel firing can be dimensioned with very great clear internal ~idth in order to guarantee the longest possible firing time with solid fuels without maintenanoe, while the campletely separate fume flue for the burner firing can consist, in the manner favourable for this type of firing, of a plurality of finned pipes. Moreover the mutually separate cambustion chamkers and the campletely mutually separate exhaus~ flues can be arranged so that both the burner firing system and the solid fuel firing system comprise only rising exhaust flues and therefore the burner firing system is also suitable for firing with burners aperating at atmospheric pressure. me camplete separation of the exhaust flues also offers a better possibility of forming the t~o ccmbustion chambers independently of one another as most favourable for the type of firing in each case. me first cc~bustion chamber for the burner firing can be very large with deep dimen-sions for a specific reversal flame and receive opti~um dimensions for oil firing with respect to radiation transmission, in order to reduce the pro-duction of unburn~ petroleum derivatives which may Quse unpleasant smells due to under-ccoled cambustion chamber zones. Irrespective of the formation of the cambustion chamber and of the exhaust flue for the burner firing, the first cambustion chamber for the solid fuel firing can be of extraordinarily large dimensions in order to obtain a large filling space for example for buIky ~ood, and this cambustion chamber and the connection of its exhaust flue can be formed so that the combustion chamber is especially well adapted to what is called under-burning of long-flamed fuels such as woGd, peat, cheap brawn coal and the like:
For the purpose of illustra ~ ut not of limitation, an embodi-ment of the invention is hereinafter described with reference to the following drawings, in which:
Figure 1 shows an end elevation of the boiler in vertical section;
Figure 2 shows a front elevation of the boiler in a vertical sec-tion along the line II-II in Figure l; ;~
Figure 3 shows a horizontal sec*ion along the line III-III in Figure 1.
l'he boiler comprises a first combustion chamber 2 for solid fuel firing and a second combustion chamber 1 for burner firing for example by means of an oil burner 3 which chambers are arranged separate from each other and side by side in a ccmmQn boiler water space or boiler water chamber 4.
A first conduit passage or first exhaust gas flue 6 and a separate second `~
conduit passage or second exhaust gas flue 5 are connected to these two com~
bustion chambers 2 and 1 respectively and pass separately from one another through the boiler water space 4. The flues meet in a ccmmon collector or collector member 7 ah ~.e exhaust exit of the boiler. me second flue 5 con-sists of a plurality of individual finned heating pockets which extend in a horizontal sPction in the boiler water space above the second combus ion chamber 1 and are connected a~ their forward end with the second 03mbustion chamber 1 in which the flame reverses at the rear closed end causing the combustion gases to flow back towards the front end of the chamber. me ,~
second conduit pas&~ge 5 also includes a vertically extending section oDn- `~
necbed to said horizontal section and said second ccmbustion chamber 1. The rear ends of the heating pockets open into the oommon collector 7 arranged at the rear of ~he seo3nd combustion chamber 1. me ccmman collector pos-sesses a single withdrawal pipe 8 of the heating boiler for the connection of a flue pipe. me æcond co~bustion chamber 1 is closed by a large com~
bustion chamber door 9, after the opening of which both the ccmbustion cham ber 1 and the heating p~ckets forming the second flue 5 are easily accessible for the purposes of cleaning. The first flue 6 for the solid fuel firing is not divided into individual parallel ccmponent flues but consists of one single passage reaching substcantially rom the front of the boiler to the ~4a--;
.
~... ,.~.
~L~38~36;~
back, and has a large clear in-ternal widl~h, thus long firing times are possible with solid fuel without maintenc~ce c~nd boiler eleaning. This first flue 6 possesses a vertieal section 10 w~uch is arranged between the two eom-bustion chambers 1 and 2 in the boiler water space 4, and a first horizontal seetic)n 11 adjoining this vertical sectian and extencling to the side into the boiler above the second ec~bustion chan~!r 1, and leads thence to the rear ccmmon collector 7, so that thus the fume paths of the exhaust gases for the burner firing and for the solid fLel firing terminate almost at the same point at the rear of the boiler. As a result only a very small, spaee-saving ecmmon eolleetor is required. The vertieal seetic)n 10 is c~en on the frc~t of the boiler and elosed by a removable eover 12 so that this vertieal see-tion 10 ean be elecmed eonveniently frc~ the front of the boiler. The hc)r-izontal seetion 11 is open in the regic)n of the ec~bustion ehamber door 9 tc~ards the front of the boiler and elosed off in sealing .. ~ ,. ~4b~
. . . . ' ' ' : ~
1~8~3~;3 ~nner by this combustion chamber door 9, so that when the combustion chamber door 9 is open the hori30ntal section 11 of the first flue 6 is exposed at the same time and can be cleaned conveniently from the front of the boiler.
In order that long-flame fuels with under--burning can be burned, the first flue 6 is connected laterally to the lower end of the first combustion chamber
In heating plants which are burner fired~ especially with oil firing, it is frequently convenient or necessary to also burn solid fuels.
Constructing an additional separate solid fuel boiler along side the oil fired boiler, including coupling water connections onto the back of the boiler and exhaust flues is not only very expensive but also requires com- ;
plicated shut-off ~echanisms in the water connections and in the flues which must be adjusted depending upon the type of fuel used. ~s a result double-fired boilers have been produced which contain separate combustion chambers for the oil firing and for solid fuelsO These known double-fired boilers always have common ancillary heating surfaces~ that is to say the exhaust fumes departing from the combustion chambers act on the same ancillary heat-ing surfaces over the major part of their paths, at least in the important final portion of the duct. For example it is known that in boilers of normal dimensions~ a smaller burner firing combustion chamber can be arranged in a larger solid fuel combustion chamber and the smaller combustion chamber opens out with a connection passage into the solid fuel combustion chamber, so as to allow the exhaust from the burner firing to flow through the heating surfaces in the solid fuel combustion chamber and out its exhaust flueO
These common heating surfaces of the known dcùble-fired boilers have the dis-advantage that ashes and other combustion residues soil the ancillary heating surfacesO mis has a very disadvantageous and unfavourable effect upon the oil or gas firing~ wbich represents the normal type of firing of the double- -fired boiler~ since the build-up of soot and residue makes the burner much less effici`entO Soot and combustion residue deposits can also block the common flues and thus have extremely disadvantageous effects upon the pressure and flow conditions necessary for satisfactory burner operationO The common flues of the known double-fired boilers would therefore have to be formed with a larger lnternal heat exchange surface area so that burning of wood ~ ~8~363 or other solid fuels which produce a great deal of ash and other cambustion residues, the burner fired operation could continue without separate boiler cl~aning. In any case, the build up of residue and soot deposits is not desirable in an oil or gas fired boiler.
According to one aspect the invention is a double-fired heating boiler adapted to be fired selectively by oil, gas or a sGlid fuel, cGmpris-ing: a boiler water chamber; first and second cambustion chambers horizon-tally spaced from one another ~ithin said boiler water chamber and adapted respectively to be oil or gas-fired and solid fuel-fired, said first comr bustion chamber having a height less than the height of said second comb~ls-tion chamker, said boiler water chamber having a portion vertically disposed in superimposed relationship over said first combustion chamber and horizon-tally disposed laterally of the upper portion of said second combustion chamber; a collector member for the combustion gases of said first and second co~bustion chambers; a first conduit passage having heat exchange surfaces connected to said first conbustion chamber and extending through said boiler water chamber and terminating in said common ccmbustion gas collector member; a second conduit passage having heat exchange surfaces connected to said second combustion chamber and extending through said boiler wa~er chamber and terminating in said ccmmon combustion gas collector member; said first and second conduit passages extending co~pletely separate-ly frGm said first and second combustion chambers respectively and through said boiler water chamber to said common combustion gas collector member;
said first conduit passage having a horizontal section extending within said boiler water chamber portion, said horizontal section being superimpcsed over said first combustion chamker and communicating at the front end of said heating boiler with said first ~ombustion cha~ber and at the rear end of said heating boiler with said collector me~ber, said second conduit passage ccmr prising a horizontally e3~ending section within said boiler water chamber portion superimposed over said first combustion chamber and communicating ~ith said second combustion chamber and lying in superimposed spaced rela-tionship to the horizontal conduit section of said first conduit passage.
--2~
~ . .
_. ;
~: , 3~;~
According to a second aspect the in~enlion is a double-fired heating boiler adapted to be fired sPleclively by oil, gas or a solid fuel, comprising: a boiler water chamber; first and second comblstion chambers positioned side-by-side within said boiler water chamber and adapted respec-tively to be oil or gas-fired and solid fuel-fired; a common collector member for the combustion gases of said first and second combustion chambers; a first conduit passage having heat exchange surfaces connected to said first cQmbustion chamber and extending through said boiler water chamber and terninating in said ccmmon comhustion gas collector member; a second conduit passage having heat exchange surfaces connected to said second combustion cha~ber ard extending through said boiler water chamber and termQnating in said ccmmon cQmbustion gas collector member; said first and second conduit passages extending completely separately from said ~irst and sPcond combus- ~
tion chamber respectively and through said boiler water chamber to said -ccmmon combustion gas collector member; said first conduit passage extending horizontally within said boiler water chamber and situated above said first cQmbustion chamber-~and communicating at the front end of said heating boiler with said first combustion chamber and at the rear end of said heating boiler with said collector me~ber, said second conduit passage including a horizon-~lly extending sectiQn communicating with said second combustion chamker and lying in superimposed spaced relation to the horizontal conduit passage for said first combustion chamber; said second conduit passage for said second cc~bustion chamber including a vertically extending section connected to said second combustion cham~er and to said horizontally extending section and wherein said v~rtically extending section is positioned ketween said first and second ccmbustion chambers and is in cQmmunication with the lcwer region of said second cQmbustion chamber.
Thus in the boiler according to the invention, both the combustion chambers ard the flues which act as ancillary heating surfaces for the oil - 30 or gas firing and for the solid fuels, are ccmpletely separate from one another-as far as the co~mon collector of the boiler to which an exhaust with-drawal pipe is attached. mus contamination of the ancillary heating sur-,. ~
,, . ' -faces for the oil or gas firing by the ash or other ccmbustion residues occurring in solid fuel firing is completely avoided, so that constantly high efficiencies and econamy are guaranteed for the oil or gas firing system.
Moreover the exhaust flues and the ancillary heating surfaces formed by them are ir.dividually formed with the configuration, length and cross-sectior~l width which are most expedient and favourable for the burner operation on the one hand and for the solid fuel firing on the other. Thus by way of example the first flue for the solid fuel firing can be dimensioned with very great clear internal ~idth in order to guarantee the longest possible firing time with solid fuels without maintenanoe, while the campletely separate fume flue for the burner firing can consist, in the manner favourable for this type of firing, of a plurality of finned pipes. Moreover the mutually separate cambustion chamkers and the campletely mutually separate exhaus~ flues can be arranged so that both the burner firing system and the solid fuel firing system comprise only rising exhaust flues and therefore the burner firing system is also suitable for firing with burners aperating at atmospheric pressure. me camplete separation of the exhaust flues also offers a better possibility of forming the t~o ccmbustion chambers independently of one another as most favourable for the type of firing in each case. me first cc~bustion chamber for the burner firing can be very large with deep dimen-sions for a specific reversal flame and receive opti~um dimensions for oil firing with respect to radiation transmission, in order to reduce the pro-duction of unburn~ petroleum derivatives which may Quse unpleasant smells due to under-ccoled cambustion chamber zones. Irrespective of the formation of the cambustion chamber and of the exhaust flue for the burner firing, the first cambustion chamber for the solid fuel firing can be of extraordinarily large dimensions in order to obtain a large filling space for example for buIky ~ood, and this cambustion chamber and the connection of its exhaust flue can be formed so that the combustion chamber is especially well adapted to what is called under-burning of long-flamed fuels such as woGd, peat, cheap brawn coal and the like:
For the purpose of illustra ~ ut not of limitation, an embodi-ment of the invention is hereinafter described with reference to the following drawings, in which:
Figure 1 shows an end elevation of the boiler in vertical section;
Figure 2 shows a front elevation of the boiler in a vertical sec-tion along the line II-II in Figure l; ;~
Figure 3 shows a horizontal sec*ion along the line III-III in Figure 1.
l'he boiler comprises a first combustion chamber 2 for solid fuel firing and a second combustion chamber 1 for burner firing for example by means of an oil burner 3 which chambers are arranged separate from each other and side by side in a ccmmQn boiler water space or boiler water chamber 4.
A first conduit passage or first exhaust gas flue 6 and a separate second `~
conduit passage or second exhaust gas flue 5 are connected to these two com~
bustion chambers 2 and 1 respectively and pass separately from one another through the boiler water space 4. The flues meet in a ccmmon collector or collector member 7 ah ~.e exhaust exit of the boiler. me second flue 5 con-sists of a plurality of individual finned heating pockets which extend in a horizontal sPction in the boiler water space above the second combus ion chamber 1 and are connected a~ their forward end with the second 03mbustion chamber 1 in which the flame reverses at the rear closed end causing the combustion gases to flow back towards the front end of the chamber. me ,~
second conduit pas&~ge 5 also includes a vertically extending section oDn- `~
necbed to said horizontal section and said second ccmbustion chamber 1. The rear ends of the heating pockets open into the oommon collector 7 arranged at the rear of ~he seo3nd combustion chamber 1. me ccmman collector pos-sesses a single withdrawal pipe 8 of the heating boiler for the connection of a flue pipe. me æcond co~bustion chamber 1 is closed by a large com~
bustion chamber door 9, after the opening of which both the ccmbustion cham ber 1 and the heating p~ckets forming the second flue 5 are easily accessible for the purposes of cleaning. The first flue 6 for the solid fuel firing is not divided into individual parallel ccmponent flues but consists of one single passage reaching substcantially rom the front of the boiler to the ~4a--;
.
~... ,.~.
~L~38~36;~
back, and has a large clear in-ternal widl~h, thus long firing times are possible with solid fuel without maintenc~ce c~nd boiler eleaning. This first flue 6 possesses a vertieal section 10 w~uch is arranged between the two eom-bustion chambers 1 and 2 in the boiler water space 4, and a first horizontal seetic)n 11 adjoining this vertical sectian and extencling to the side into the boiler above the second ec~bustion chan~!r 1, and leads thence to the rear ccmmon collector 7, so that thus the fume paths of the exhaust gases for the burner firing and for the solid fLel firing terminate almost at the same point at the rear of the boiler. As a result only a very small, spaee-saving ecmmon eolleetor is required. The vertieal seetic)n 10 is c~en on the frc~t of the boiler and elosed by a removable eover 12 so that this vertieal see-tion 10 ean be elecmed eonveniently frc~ the front of the boiler. The hc)r-izontal seetion 11 is open in the regic)n of the ec~bustion ehamber door 9 tc~ards the front of the boiler and elosed off in sealing .. ~ ,. ~4b~
. . . . ' ' ' : ~
1~8~3~;3 ~nner by this combustion chamber door 9, so that when the combustion chamber door 9 is open the hori30ntal section 11 of the first flue 6 is exposed at the same time and can be cleaned conveniently from the front of the boiler.
In order that long-flame fuels with under--burning can be burned, the first flue 6 is connected laterally to the lower end of the first combustion chamber
2 and the entry 13 of this exhaust gas flue from the combustion chamber 2 lies close to and above a grate 140 The ~rate 14 includes an oblique grate part 15 which possesses a direct air entry into the entry to the vertical section 10 of the fume flue 6. Thus very good combustion results are achievëd with extremely low carbon monoxide contents in the exhaust gasesO With the under-burning on the longitudinal side, that is to say with the opening of - the first flue 6 laterally on one longitudinal side of the first combustion chamber 2, a very good part-load regulation of the solid fuel firing system is achieved. At the upper end of this first combustion chamber 2 there is provided a narrow by-pass opening or slot 16 which can extend over the whole depth of the first combustion chamber 2. This allows a direct withdrawal of incompletely burned gases into first flue 6. Such gases collect in the upper region of the combustion chamber 2, for example after the opening of the ' upper charging door 21, from the upper region of the combustion chamber 2.
When the two combustion chambers are side by side in the boiler water space 4~ the boiler water space above the second combustion chamber 1 offers sufficient space for an insert 17, for example a service water through-put heater pipe coil or an electric heating insert for off-peak heatingO Insert 17 can be arranged between the heating pockets of the second flue 5 and the hori~ontal section 11 of the first flue 6~ ~he boiler can also be equipped with an attached service water reservoir 18. In an advantageous manner the .
boiler is formed so that the boiler water connections 19 and the tank connec-tions 20 lie on the same side of the boiler, namely on the right side in the drawing. A certain wall distance is necessary on account of the possibility of pivoting out the burner doorO In this way all heating installation parts, ,,,~ . : ,, ' - ', .
~8~363 as for example circulating pl~p and mixer valve and the like, and all instal-lation parts, as for e~ample conduits and valves for hot water, cold water and circl~ation~ are easily accessibly accommodated and arranged for maint-enance on the side of the heating boiler,, and therefore the distance between the back of the boiler and the wall of the building can be kept very short~
The heating boiler as describecl has as well as the advantages already mentioned the further advantage that the water space above the burner firing second combustion chamber 1, is utilised for the water-cooled arrangement of the horizontal second flue 5 of the burner firing system and of the hori-zontal part 11 of the first flue 6 of the solid fuel firing system. This space is available because the second combustion chamber 1 has the higher - performance capacity of the two combustion chambers and therefore requires a less heat height transfer area than the solid fuel first combustion chamber 2D The second flue 5 can be given the most favourable formation for burner firing with large heat exchange area, and furthermore the entire height of the boiler water space 4 is available for the height of a solid fuel first combustion chamber of large volumeO
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:.:
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When the two combustion chambers are side by side in the boiler water space 4~ the boiler water space above the second combustion chamber 1 offers sufficient space for an insert 17, for example a service water through-put heater pipe coil or an electric heating insert for off-peak heatingO Insert 17 can be arranged between the heating pockets of the second flue 5 and the hori~ontal section 11 of the first flue 6~ ~he boiler can also be equipped with an attached service water reservoir 18. In an advantageous manner the .
boiler is formed so that the boiler water connections 19 and the tank connec-tions 20 lie on the same side of the boiler, namely on the right side in the drawing. A certain wall distance is necessary on account of the possibility of pivoting out the burner doorO In this way all heating installation parts, ,,,~ . : ,, ' - ', .
~8~363 as for example circulating pl~p and mixer valve and the like, and all instal-lation parts, as for e~ample conduits and valves for hot water, cold water and circl~ation~ are easily accessibly accommodated and arranged for maint-enance on the side of the heating boiler,, and therefore the distance between the back of the boiler and the wall of the building can be kept very short~
The heating boiler as describecl has as well as the advantages already mentioned the further advantage that the water space above the burner firing second combustion chamber 1, is utilised for the water-cooled arrangement of the horizontal second flue 5 of the burner firing system and of the hori-zontal part 11 of the first flue 6 of the solid fuel firing system. This space is available because the second combustion chamber 1 has the higher - performance capacity of the two combustion chambers and therefore requires a less heat height transfer area than the solid fuel first combustion chamber 2D The second flue 5 can be given the most favourable formation for burner firing with large heat exchange area, and furthermore the entire height of the boiler water space 4 is available for the height of a solid fuel first combustion chamber of large volumeO
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Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A double-fired heating boiler adapted to be fired selectively by oil, gas or a solid fuel, comprising: a boiler water chamber; first and second combustion chambers horizontally spaced from one another within said boiler water chamber and adapted respectively to be oil or gas-fired and solid fuel-fired, said first combustion chamber, having a height less than the height of said second combusion chamber said boiler water chamber having a portion vertically disposed in superimposed relationship over said first combustion chamber and horizontally disposed laterally of the upper portion of said second combustion chamber; a collector member for the combustion gases of said first and second combustion chambers; a first conduit passage having heat exchange surfaces connected to said first combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member; a second conduit passage having heat exchange surfaces connected to said second combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member; said first and second conduit passages extending completely separately from said first and second combustion chambers respectively and through said boiler water chamber to said common combustion gas collector member; said first conduit passage having a horizontal section extending within said boiler water chamber portion, said horizontal section being superimposed over said first combustion chamber and communicating at the front end of said heating boiler with said first combustion chamber and at the rear end of said heating boiler with said collector member, said second conduit passage comprising a horizontally extending section within said boiler water chamber portion superimposed over said first combustion chamber and communicating with said second combustion chamber and lying in super-imposed spaced relationship to the horizontal conduit section of said first conduit passage.
2. A double-fired heating boiler adapted to be fired selectively by oil, gas or a solid fuel, comprising: a boiler water chamber; first and second combustion chambers positioned side-by-side within said boiler water chamber and adapted respectively to be oil or gas-fired and solid fuel-fired a common collector member for the combustion gases of said first and second combustion chambers; a first conduit passage having heat exchange surfaces connected to said first combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member;
a second conduit passage having heat exchange surfaces s connected to said second combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member; said first and second conduit passages extending completely separately from said first and second combustion chamber respectively and through said boiler water chamber to said common combustion gas collector member; said first conduit passage extending horizontally within said boiler water chamber and situated above said first combustion chamber and communicating at the front end of said heating boiler with said first combustion chamber and at the rear end of said heating boiler with said collector member, said second conduit pas-sage including a horizontally extending section communicating with said second combustion chamber and lying in superimposed spaced relation to the horizontal conduit passage for said first combustion chamber; said second conduit passage for said second combustion chamber including a vertically extending section connected to said second combustion chamber and to said horizontally extending section and wherein said vertically extending section is positioned between said first and second combustion chambers and is in communication with the lower region of said second combustion chamber.
a second conduit passage having heat exchange surfaces s connected to said second combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member; said first and second conduit passages extending completely separately from said first and second combustion chamber respectively and through said boiler water chamber to said common combustion gas collector member; said first conduit passage extending horizontally within said boiler water chamber and situated above said first combustion chamber and communicating at the front end of said heating boiler with said first combustion chamber and at the rear end of said heating boiler with said collector member, said second conduit pas-sage including a horizontally extending section communicating with said second combustion chamber and lying in superimposed spaced relation to the horizontal conduit passage for said first combustion chamber; said second conduit passage for said second combustion chamber including a vertically extending section connected to said second combustion chamber and to said horizontally extending section and wherein said vertically extending section is positioned between said first and second combustion chambers and is in communication with the lower region of said second combustion chamber.
3. A double-fired heating boiler according to claim 2, wherein said vertically extending section of the conduit passage for said second combus-tion chamber is accessible from outside the front end of said heating boiler, a cover being provided for sealing said vertically extending section, the heating boiler having a door member at the front end thereof for sealingly and accessibly closing said first combustion chamber, said horizontally extending conduit passage for said first combustion chamber, and said horizontally extending section of the conduit passage for said second combustion chamber.
4. A double-fired heating boiler adapted to be fired selectively by oil, gas or a solid fuel, comprising: a boiler water chamber; first and second combustion chambers positioned side-by-side within said boiler water chamber and adapted respectively to be oil or gas-fired and solid fuel-fired;
a common collector member for the combustion gases of said first and second combustion chambers; a first conduit passage having heat exchange surfaces connected to said first combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member;
a second conduit passage having heat exchange surfaces connected to said second combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member; said first and second conduit passages extending completely separately from said first and second combustion chambers respectively and through said boiler water chamber to said common combustion gas collector member; said first conduit passage extending horizontally within said boiler water chamber and situated above said first combustion chamber and communicating at the front end of said heating boiler with said first combustion chamber and at the rear end of said heating boiler with said collector member; said second conduit pas-sage comprising a horizontally extending section communicating with said second combustion chamber and lying in superimposed spaced relating to the horizontal conduit passage for said first combustion chamber, said second conduit passage further comprising a vertically extending section having its lower end connected to said second combustion chamber and its upper end joined to said horizontally extending section and wherein said vertically extending section is positioned in the boiler water chamber forming an ancillary heating area between said first and second combustion chambers and is in communication with the lower region of said second combustion chamber.
a common collector member for the combustion gases of said first and second combustion chambers; a first conduit passage having heat exchange surfaces connected to said first combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member;
a second conduit passage having heat exchange surfaces connected to said second combustion chamber and extending through said boiler water chamber and terminating in said common combustion gas collector member; said first and second conduit passages extending completely separately from said first and second combustion chambers respectively and through said boiler water chamber to said common combustion gas collector member; said first conduit passage extending horizontally within said boiler water chamber and situated above said first combustion chamber and communicating at the front end of said heating boiler with said first combustion chamber and at the rear end of said heating boiler with said collector member; said second conduit pas-sage comprising a horizontally extending section communicating with said second combustion chamber and lying in superimposed spaced relating to the horizontal conduit passage for said first combustion chamber, said second conduit passage further comprising a vertically extending section having its lower end connected to said second combustion chamber and its upper end joined to said horizontally extending section and wherein said vertically extending section is positioned in the boiler water chamber forming an ancillary heating area between said first and second combustion chambers and is in communication with the lower region of said second combustion chamber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2630728.8 | 1976-07-08 | ||
| DE19762630728 DE2630728A1 (en) | 1976-07-08 | 1976-07-08 | HEATING BOILERS FOR OIL OR GAS FIRING AND SOLID FUEL FIRING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1084363A true CA1084363A (en) | 1980-08-26 |
Family
ID=5982508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA282,273A Expired CA1084363A (en) | 1976-07-08 | 1977-07-07 | Heating boiler for oil or gas firing and solid fuel firing |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT361667B (en) |
| CA (1) | CA1084363A (en) |
| DE (1) | DE2630728A1 (en) |
| FR (1) | FR2361609A1 (en) |
| GB (1) | GB1539327A (en) |
| IT (1) | IT1081529B (en) |
| PL (1) | PL199450A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2913205C2 (en) * | 1979-04-03 | 1985-07-04 | Interliz Anstalt, Vaduz | Two-chamber boiler for burner firing and solid fuel firing |
| EP0054004A1 (en) * | 1980-12-10 | 1982-06-16 | Battelle Memorial Institute | Multi fuel heater |
| GB2092725B (en) * | 1981-02-10 | 1984-04-04 | Parkinson Cowan Gwb | Shell boilers |
| DE3125037C1 (en) * | 1981-06-26 | 1983-03-10 | Hans 3559 Battenberg Vießmann | Boiler |
| DE8805042U1 (en) * | 1988-04-16 | 1989-08-17 | Vießmann, Hans, Dr., 3559 Battenberg | Boiler-storage combination |
| DE102014106080A1 (en) * | 2014-04-30 | 2015-11-05 | Ulrich Brunner GmbH | Safety heat exchanger of a heating device |
-
1976
- 1976-07-08 DE DE19762630728 patent/DE2630728A1/en not_active Withdrawn
-
1977
- 1977-07-05 FR FR7720600A patent/FR2361609A1/en active Granted
- 1977-07-06 AT AT482577A patent/AT361667B/en not_active IP Right Cessation
- 1977-07-07 PL PL19945077A patent/PL199450A1/en unknown
- 1977-07-07 GB GB2865677A patent/GB1539327A/en not_active Expired
- 1977-07-07 CA CA282,273A patent/CA1084363A/en not_active Expired
- 1977-07-07 IT IT2549877A patent/IT1081529B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2361609B3 (en) | 1980-04-25 |
| DE2630728A1 (en) | 1978-01-12 |
| ATA482577A (en) | 1980-08-15 |
| PL199450A1 (en) | 1978-07-31 |
| IT1081529B (en) | 1985-05-21 |
| GB1539327A (en) | 1979-01-31 |
| FR2361609A1 (en) | 1978-03-10 |
| AT361667B (en) | 1981-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |