CA2044282A1 - Boiler capable of burning liquid or gaseous fuel - Google Patents
Boiler capable of burning liquid or gaseous fuelInfo
- Publication number
- CA2044282A1 CA2044282A1 CA002044282A CA2044282A CA2044282A1 CA 2044282 A1 CA2044282 A1 CA 2044282A1 CA 002044282 A CA002044282 A CA 002044282A CA 2044282 A CA2044282 A CA 2044282A CA 2044282 A1 CA2044282 A1 CA 2044282A1
- Authority
- CA
- Canada
- Prior art keywords
- boiler
- rings
- end members
- steel plate
- accordance
- 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.)
- Abandoned
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
- F24H1/22—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
- F24H1/263—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 with a dry-wall 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
- F24H9/00—Details
- F24H9/14—Arrangements for connecting different sections, e.g. in water heaters
-
- 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
- F24H9/00—Details
- F24H9/14—Arrangements for connecting different sections, e.g. in water heaters
- F24H9/146—Connecting elements of a heat exchanger
-
- 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
- F24H1/30—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 being built up from sections
- F24H1/32—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 being built up from sections with vertical sections arranged side by side
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 The proposed boiler, which is suitable for burning liquid or gaseous fuels, comprises a water-conducting housing provided with feed and return lines 1, 2, said housing enveloping a firebox, the openings of which 5 on both sides are provided with closures 6 7, of which one 6, comprises the insert opening 8 for burner 9, while the other, 7, comprises a flue gas outlet. It is proposed that such a boiler be so designed that the water-conducting housing comprise two end members 10 and two or more rings 11 that constitute firebox wall 4' t as well as a steel plate jacket 12 that serves to seal off the water-carrying cavity from the outside. Steel plate jacket 12 and rings 11 are arranged so as to be immobilized between end members 10 by means of tightening rods 14 that extend through cavity 13 and are attached to end members 10 in such a way as to create a seal at that point, the tightening rods being distributed uniformly over the circumference of end members 10 and so that all impact points situated between steel plate jacket 12 and end members 10, between end members 10 and rings 11, and between the rings 11 themselves, are provided with packing devices 15. (Figure 1).
Description
~r 2044282 :
BOILER CAP~BLE OF BURNING LIOUID OR GASEOUS FUEL .
The present invention relates to a boiler suitable for burning liquid or gaseous fuels as described in the preamble to the main claim. ;
': ' Boilers of the above-mentioned type are Xnown and u~ed in a variety o~ configurations which, although differing in detail, operate generally according to the same principle.
The prior art boiler design presently being considered applies generally to boilers constructed of steel plate or cast iron.
Boilers constructed of the latter normally comprise relatively narrow individual elements which are cast as a single piece by means o~ the hollow casting method (see DA-A-20 17 992 and FR-A-22 37 141), and regularly exhibit nipple-like projections which face the water jacket of the boiler to form zones of relatively narrow ~low passages. They are assembled into a structure comprising a plurality of individual members. The rationalized serial production of prior art cast iron boilers entails considerable technical expenditure, particularly given the requirement that individual parts, or rather the cast elements, must be hollow cast. Most of the binders used to bind together the core foundry sand, which is essential for the production of cavities found in boiler parts, are highly toxic. Due to its toxicity, the sand used for the core and left over at the end of the casting process, can not normally be disposed of in conventional waste sites. The excess core sand must be disposed of in special waste sites, a procedure that incurs higher costs and entails greater logistical complexity. The production of cast iron boilers comprising a ;
plurality of individual members, that are open only at their small nipple-shaped apertures, involves relatively high foundry material costs. Such prior art cast metal boilers are also necessarily heavier than boilers produced by other methods.
. ~.,' ' '' The object of the present invention therefore relates to the improvement and creation of a boiler of the kind first described type, whose essential parts, i.e. those constituting the firebox, can be produced from a material that S functions to inhibit condensation. It is also proposed that such parts, which comprise cast iron, be cast by means of a coreless method that is both rational and environment-friendly. The method of production of the present invention would furthermore permit the boiler to be assembled from only a few elements and permit the consideration of ceramic-based material ln the manufacture of those parts that surround the ~ombustion chamber.
The object of the present invention is addressed in a boiler of the first mentioned type which comprises the di~tinguishing features that are claimed in the distinguishing portion of Claim 1. Further advantageous improvements will be described in the subsidiary claims.
In contrast with prior art boilers, which comprise relatively thin individual members cast in one piece by the hollow casting method and comprise nipple-like constrictions on the side facing the water contained inside the water ~acket, the proposed boiler is designed from geometrically very gimple parts that are manufactured by a simple method ~;~
that permits a ~eal formation without nipple formation and which ~oined together to form a firebox. It is furthermore proposed that the shell that encloses the water jacket from ;
the outside be constructed simply from plate steel. The simplified geometry of the boiler elements permit coreless casting, which replaces the entire hollow casting process, eliminates foundry sand disposal and affords a simplified means producing individual members whose thickness far exceeds that of boiler elements that can be produced by conventional casting technology. The coreless casting method permits cost-effective and advantageous manufacture of different types of boiler members that are distinguished in particular by -',',~:' ;' :';, ,''''~ ', '"
improved pressure resistance, thinner design, and a simplified and principally uniform design of the end members. Further advantages are described in greater detail in the subsidiary claims .
The novel design of the proposed boiler permits use of a coreless method for casting the boiler parts permitting conetruction of an inner water-conducting cavity which, rather than being sectioned off by means of small and narrow flow through passages, corresponds effectively to a conventional fiteel boiler. By always using the same rings and corresponding end members, it is possible to assemble the lndlvldual cast elements into boilers of different lengths.
In order to be able to cast the members in "green" sand, the members, which are aligned vertically inside the casting ;
mould, must have a conical shape that permits a positive model to be wlthdrawn from the sand form prior to casting the final product. The simple geometry of the rings permits their manufacture from ceramic material. Because the outer wall of the water-conducting cavity comprises an easily-manufactured steel plate jacket, the rings can have a simple geometry.
The proposed boiler and advantageous improvements thereof will further be aescribed in greater detail with the ald of drawings of one embodiment example. Schematically lllustrated are:
Flg. 1 is a longitudinal section through the proposed boiler;
Fig. 2 is a cross section through the proposed boiler;
Fig. 3 is an enlarged detailed section in accordance with circle A of Fig. 1 and Fig. 4 is an enlarged detailed section of the preferred configuration of the steel-plate jacket packing--system.
The proposed boiler comprises a water-conducting housing 3 comprising feed and return connections 1 and 2.
Said housing surrounds a firebox whose openings, which are situated at both ends of the boiler, are provided with closure device~ 6, 7, where device 6 contains the opening through which burner 9 is installed, while the other opening contains a flue gas outlet. In its basic configuration, the proposed boiler comprises a water-conducting housing 3, which comprises two end members 10 and one or more rings 11 that form the combuskion chamber wall 4', and a steel plate jacket 12 that ~urrounds a water-conducting cavity 13 from the outside.
8teel plate ~acket 12 and rings 11 are immobilized between end member~ 10 by means of tightening rods 14 that extend through cavity 13. The tightening rods, which are attached to end members 10 so as to form a seal therewith, are distributed unlfor~ly around the circumference of the boiler housing. The onlarg~d detail shown in Figure 3 better illustrates the means by whlch tightening rods 14 are secured to end members 10 to ;~
form a ssal therewith. In addition, all impact points located ;
b~tween ~teel plate ~acket 12, between end members 10 and rings 11, and between the rings 11 themselves, are provided wlth packing means 15. This arrangement is demonstrated more clearly in Figure 3, whe~ein packing means 15 are shown in the form o~ a spring-and-groove arrangement comprising packing rings 17 arranged inside grooves 16. In the configuration ~hown, rings 11 and both end members 10 are cast. Rings 11 are provided on the side facing the firebox with longitudinal ribs 18. It is essential that such parts be cast with a elightly conical shape so as to facilitate the creation of ; , positive models in the foundry sand wherever required by the particular design of the part being cast. This process need ~ ~
not, however, be disclosed in greater detail. It will, in any ~ -case, be readily appreciated that, since rings ll and the end members do not comprise cavities, they can be formed without -use of foundry cores. In order to be able to comfortably - ;~;
mount closure device 6 that is embodied as a locking door ~ ;~
, ~.',.
20~4282 which mounts burner 9, and in order to house insulation block 6' which is attached to such locking door, burner-side end member 10 is, as illustrated, provided with an annular connecting collar 19 which, as can be seen, also has a slightly conical cross section. The other end member 10, which faces the outer side and features flue nozzle 20, is, as illustrated, essentially configured as a slightly convex disc.
In this arrangement, however, only the wall of connecting nozzle 20 has a slightly conical shape. Since casting of these elements produces casting irregularities, any impact-prone elements must be surface-ground. The provision of tightening rods 14, as illustrated in Figure 1, is sufficient to seal off the water conducting cavity 13 both towards the inside facing firebox 4 and towards the outside. Such sealing 1~ accomplished simply because tightening rods 14 immobilize both end members 10, rings 11, steel plate jacket 12, which is mads endless by means o~ a longitudinal welding bead, and p~cking devices 15, which are installed at various places throughout the st N cture. It is, however, also possible to move tightening rods 14 closer to the rings in the radial direction and also, as indicated by the broken lines, to install additional tightening rods 14' further towards the rim. For this purpose, however, end members 10 must, as indicated by the broken lines, be diametrally enlarged in order to be able to provide circumferential rims that project beyond steel plate jacket 12 (See Figure 2) to which tightening bars 14' can be secured.
Apart from the arrangements described above, all that remains to be cast are connecting extensions 22 (See Figure 2) are then function to serve as bearing sites for outer tightening rods 14l. Since the process of attaching feed and outlet lines 1, 2 to the steel plate jacket 12 is amongst the simplest of operations, these are, as indicated by means of broken lines, preferably attached to steel plate jacket 12. Since rings 11 possess a very simple geometric form and because of the principle enunciated in-the present , - .. , :, - ,, - ; . . . -, - ~
disclosure of joining the rings together by tightening the latter between both end members 10, it is possible to manu~acture the rings from ceramic material since this material has properties that favour resistance to condensation to a greater extent than cast iron. If such ceramic parts or ceramic rings are not extrusion-moulded, but rather are Compres~ion-moulded~ it is necessary for sufficient conicity to be designed into such parts. The above-described design principle can, o~ course, be applied to the production of gravlty-operating boilers which, rather than featuring a pot-shaped combustion chamber 23', comprise a combustion chamber in~ert that opens toward the bottom. Such a configuration would reguire merely a suitable redesign of end members 10, ~ince the escaping flue gases would, in such a configuration, have to be drawn o~ in the zone of the end member 10 nearest tho burner, a~ter which such gases would be directed to the -~
zone o~ the other lower-end member and then be directed toward the top in a ~lue gas stream o~ annular cross section.
Since the thermal loads encountered on the firebox wall 4'di~er ~rom those acting on steel plate jacket 12, such ;~
parts exhibit di~erent degrees o~ thermal expansion. Steel plate jacket 12 i9 separated ~rom other parts through the use o~ the packings described in Figure 4, i.e. steel plate jacket 12 sits so as to be able to slide and is provided on at least one side with a packing ring 15' that sits in a corresponding groove 23 o~ end members 10. ~ ;~
.., :. ,,:
.~, , ;, '', ~
",-, ' ~, ~ . . .
~ ' , '
BOILER CAP~BLE OF BURNING LIOUID OR GASEOUS FUEL .
The present invention relates to a boiler suitable for burning liquid or gaseous fuels as described in the preamble to the main claim. ;
': ' Boilers of the above-mentioned type are Xnown and u~ed in a variety o~ configurations which, although differing in detail, operate generally according to the same principle.
The prior art boiler design presently being considered applies generally to boilers constructed of steel plate or cast iron.
Boilers constructed of the latter normally comprise relatively narrow individual elements which are cast as a single piece by means o~ the hollow casting method (see DA-A-20 17 992 and FR-A-22 37 141), and regularly exhibit nipple-like projections which face the water jacket of the boiler to form zones of relatively narrow ~low passages. They are assembled into a structure comprising a plurality of individual members. The rationalized serial production of prior art cast iron boilers entails considerable technical expenditure, particularly given the requirement that individual parts, or rather the cast elements, must be hollow cast. Most of the binders used to bind together the core foundry sand, which is essential for the production of cavities found in boiler parts, are highly toxic. Due to its toxicity, the sand used for the core and left over at the end of the casting process, can not normally be disposed of in conventional waste sites. The excess core sand must be disposed of in special waste sites, a procedure that incurs higher costs and entails greater logistical complexity. The production of cast iron boilers comprising a ;
plurality of individual members, that are open only at their small nipple-shaped apertures, involves relatively high foundry material costs. Such prior art cast metal boilers are also necessarily heavier than boilers produced by other methods.
. ~.,' ' '' The object of the present invention therefore relates to the improvement and creation of a boiler of the kind first described type, whose essential parts, i.e. those constituting the firebox, can be produced from a material that S functions to inhibit condensation. It is also proposed that such parts, which comprise cast iron, be cast by means of a coreless method that is both rational and environment-friendly. The method of production of the present invention would furthermore permit the boiler to be assembled from only a few elements and permit the consideration of ceramic-based material ln the manufacture of those parts that surround the ~ombustion chamber.
The object of the present invention is addressed in a boiler of the first mentioned type which comprises the di~tinguishing features that are claimed in the distinguishing portion of Claim 1. Further advantageous improvements will be described in the subsidiary claims.
In contrast with prior art boilers, which comprise relatively thin individual members cast in one piece by the hollow casting method and comprise nipple-like constrictions on the side facing the water contained inside the water ~acket, the proposed boiler is designed from geometrically very gimple parts that are manufactured by a simple method ~;~
that permits a ~eal formation without nipple formation and which ~oined together to form a firebox. It is furthermore proposed that the shell that encloses the water jacket from ;
the outside be constructed simply from plate steel. The simplified geometry of the boiler elements permit coreless casting, which replaces the entire hollow casting process, eliminates foundry sand disposal and affords a simplified means producing individual members whose thickness far exceeds that of boiler elements that can be produced by conventional casting technology. The coreless casting method permits cost-effective and advantageous manufacture of different types of boiler members that are distinguished in particular by -',',~:' ;' :';, ,''''~ ', '"
improved pressure resistance, thinner design, and a simplified and principally uniform design of the end members. Further advantages are described in greater detail in the subsidiary claims .
The novel design of the proposed boiler permits use of a coreless method for casting the boiler parts permitting conetruction of an inner water-conducting cavity which, rather than being sectioned off by means of small and narrow flow through passages, corresponds effectively to a conventional fiteel boiler. By always using the same rings and corresponding end members, it is possible to assemble the lndlvldual cast elements into boilers of different lengths.
In order to be able to cast the members in "green" sand, the members, which are aligned vertically inside the casting ;
mould, must have a conical shape that permits a positive model to be wlthdrawn from the sand form prior to casting the final product. The simple geometry of the rings permits their manufacture from ceramic material. Because the outer wall of the water-conducting cavity comprises an easily-manufactured steel plate jacket, the rings can have a simple geometry.
The proposed boiler and advantageous improvements thereof will further be aescribed in greater detail with the ald of drawings of one embodiment example. Schematically lllustrated are:
Flg. 1 is a longitudinal section through the proposed boiler;
Fig. 2 is a cross section through the proposed boiler;
Fig. 3 is an enlarged detailed section in accordance with circle A of Fig. 1 and Fig. 4 is an enlarged detailed section of the preferred configuration of the steel-plate jacket packing--system.
The proposed boiler comprises a water-conducting housing 3 comprising feed and return connections 1 and 2.
Said housing surrounds a firebox whose openings, which are situated at both ends of the boiler, are provided with closure device~ 6, 7, where device 6 contains the opening through which burner 9 is installed, while the other opening contains a flue gas outlet. In its basic configuration, the proposed boiler comprises a water-conducting housing 3, which comprises two end members 10 and one or more rings 11 that form the combuskion chamber wall 4', and a steel plate jacket 12 that ~urrounds a water-conducting cavity 13 from the outside.
8teel plate ~acket 12 and rings 11 are immobilized between end member~ 10 by means of tightening rods 14 that extend through cavity 13. The tightening rods, which are attached to end members 10 so as to form a seal therewith, are distributed unlfor~ly around the circumference of the boiler housing. The onlarg~d detail shown in Figure 3 better illustrates the means by whlch tightening rods 14 are secured to end members 10 to ;~
form a ssal therewith. In addition, all impact points located ;
b~tween ~teel plate ~acket 12, between end members 10 and rings 11, and between the rings 11 themselves, are provided wlth packing means 15. This arrangement is demonstrated more clearly in Figure 3, whe~ein packing means 15 are shown in the form o~ a spring-and-groove arrangement comprising packing rings 17 arranged inside grooves 16. In the configuration ~hown, rings 11 and both end members 10 are cast. Rings 11 are provided on the side facing the firebox with longitudinal ribs 18. It is essential that such parts be cast with a elightly conical shape so as to facilitate the creation of ; , positive models in the foundry sand wherever required by the particular design of the part being cast. This process need ~ ~
not, however, be disclosed in greater detail. It will, in any ~ -case, be readily appreciated that, since rings ll and the end members do not comprise cavities, they can be formed without -use of foundry cores. In order to be able to comfortably - ;~;
mount closure device 6 that is embodied as a locking door ~ ;~
, ~.',.
20~4282 which mounts burner 9, and in order to house insulation block 6' which is attached to such locking door, burner-side end member 10 is, as illustrated, provided with an annular connecting collar 19 which, as can be seen, also has a slightly conical cross section. The other end member 10, which faces the outer side and features flue nozzle 20, is, as illustrated, essentially configured as a slightly convex disc.
In this arrangement, however, only the wall of connecting nozzle 20 has a slightly conical shape. Since casting of these elements produces casting irregularities, any impact-prone elements must be surface-ground. The provision of tightening rods 14, as illustrated in Figure 1, is sufficient to seal off the water conducting cavity 13 both towards the inside facing firebox 4 and towards the outside. Such sealing 1~ accomplished simply because tightening rods 14 immobilize both end members 10, rings 11, steel plate jacket 12, which is mads endless by means o~ a longitudinal welding bead, and p~cking devices 15, which are installed at various places throughout the st N cture. It is, however, also possible to move tightening rods 14 closer to the rings in the radial direction and also, as indicated by the broken lines, to install additional tightening rods 14' further towards the rim. For this purpose, however, end members 10 must, as indicated by the broken lines, be diametrally enlarged in order to be able to provide circumferential rims that project beyond steel plate jacket 12 (See Figure 2) to which tightening bars 14' can be secured.
Apart from the arrangements described above, all that remains to be cast are connecting extensions 22 (See Figure 2) are then function to serve as bearing sites for outer tightening rods 14l. Since the process of attaching feed and outlet lines 1, 2 to the steel plate jacket 12 is amongst the simplest of operations, these are, as indicated by means of broken lines, preferably attached to steel plate jacket 12. Since rings 11 possess a very simple geometric form and because of the principle enunciated in-the present , - .. , :, - ,, - ; . . . -, - ~
disclosure of joining the rings together by tightening the latter between both end members 10, it is possible to manu~acture the rings from ceramic material since this material has properties that favour resistance to condensation to a greater extent than cast iron. If such ceramic parts or ceramic rings are not extrusion-moulded, but rather are Compres~ion-moulded~ it is necessary for sufficient conicity to be designed into such parts. The above-described design principle can, o~ course, be applied to the production of gravlty-operating boilers which, rather than featuring a pot-shaped combustion chamber 23', comprise a combustion chamber in~ert that opens toward the bottom. Such a configuration would reguire merely a suitable redesign of end members 10, ~ince the escaping flue gases would, in such a configuration, have to be drawn o~ in the zone of the end member 10 nearest tho burner, a~ter which such gases would be directed to the -~
zone o~ the other lower-end member and then be directed toward the top in a ~lue gas stream o~ annular cross section.
Since the thermal loads encountered on the firebox wall 4'di~er ~rom those acting on steel plate jacket 12, such ;~
parts exhibit di~erent degrees o~ thermal expansion. Steel plate jacket 12 i9 separated ~rom other parts through the use o~ the packings described in Figure 4, i.e. steel plate jacket 12 sits so as to be able to slide and is provided on at least one side with a packing ring 15' that sits in a corresponding groove 23 o~ end members 10. ~ ;~
.., :. ,,:
.~, , ;, '', ~
",-, ' ~, ~ . . .
~ ' , '
Claims (10)
1. Boiler suitable for burning liquid or gaseous fuels comprising a water-conducting housing provided with feed and return lines 1, 2, said housing surrounding a firebox 4, the openings 5 of said firebox being located at two ends of said firebox that is provided with closures 6, 7 of which one closure 6, comprises opening 8 through which burner 9 is inserted, while the other closure 7 contains a flue gas outlet, whereby water-conducting housing 3 comprises two end members 10, two or more rings 11 forming the wall of firebox 4' and a steel plate jacket 12 that envelopes the water-conducting cavity from the outside, whereby steel plate jacket 12 and rings 11 are arranged so as to be immobilized between and members 10 by means of tightening rods 14 that extend through cavity 13 and are attached to end members 11 in such a way that a seal is provided, said tightening rods being distributed uniformly around the circumference of said burner, and whereby furthermore all impact points located between steel plate jacket 12 and end members 10, between end members 10 and rings 11, and between the rings 11, are provided with packing devices 15.
2. Boiler in accordance with Claim 1, whereby packing devices 15 are in the form of spring-and-groove assemblies and where packing rings 17 are arranged inside grooves 16.
3. Boiler in accordance with Claim 1 or 2 whereby end members 10 comprise cast iron and rings 11 comprise either cast iron or ceramic material.
4. Boiler in accordance with one of Claims 1 to 3, whereby rings 11 are provided with longitudinal ribs 18 on the side facing the firebox.
5. Boiler in accordance with one of Claims 1 to 4, whereby end member 10, which faces the burner, is provided with an annular connecting collar 19 that connects to boiler closure 6.
6. Boiler in accordance with one of Claims 1 to 5, whereby outlet-side end member 10 comprises an essentially slightly convex disc that comprises flue outlet nozzle 20.
7. Boiler in accordance with one of Claims 1 to 6, whereby both end members 10 are also connected by means of tightening rods 14' that are situated outside of steel plate jacket 12 which is located between said members and whereby said tightening rods are attached to projecting edges 21 or to connection extension 22 of end members 10.
8. Boiler in accordance with one of Claims 1 to 7, whereby end members 10 and rings 11 are cast by a "green sand"
method.
method.
9. Boiler in accordance with one of Claims 1 to 8, whereby the feed and return lines 1, 2 are connected to steel plate jacket 12.
10. Boiler in accordance with one of Claims 1 to 9, whereby the ends of steel plate jacket 12 sit so as to be able to slide inside grooves 23 of end members 10 and are surrounded in grooves 23 with at least one packing ring 15'.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG8912866.4 | 1989-10-31 | ||
| DE8912866U DE8912866U1 (en) | 1989-10-31 | 1989-10-31 | Boilers for burning liquid or gaseous fuels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2044282A1 true CA2044282A1 (en) | 1991-05-01 |
Family
ID=6844170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002044282A Abandoned CA2044282A1 (en) | 1989-10-31 | 1990-10-19 | Boiler capable of burning liquid or gaseous fuel |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0451234B1 (en) |
| AT (1) | ATE84868T1 (en) |
| CA (1) | CA2044282A1 (en) |
| DE (2) | DE8912866U1 (en) |
| ES (1) | ES2038521T3 (en) |
| FI (1) | FI913065A0 (en) |
| WO (1) | WO1991006813A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4126706C1 (en) * | 1991-06-17 | 1992-10-29 | Buderus Heiztechnik Gmbh, 6330 Wetzlar, De | |
| DE4121219C2 (en) * | 1991-06-27 | 1994-04-07 | Buderus Heiztechnik Gmbh | Sectional boiler |
| US5278023A (en) * | 1992-11-16 | 1994-01-11 | Minnesota Mining And Manufacturing Company | Propellant-containing thermal transfer donor elements |
| DE4400400A1 (en) * | 1994-01-08 | 1995-07-13 | Viessmann Werke Kg | Three-pass boiler |
| GB2296758A (en) * | 1994-10-14 | 1996-07-10 | Blue Circle Heating Ltd | Mounting components of gas boilers |
| DE19502765C2 (en) * | 1995-01-30 | 1996-11-14 | Hans Dr Dr Viesmann | Sectional boiler |
| DE19912572C2 (en) * | 1999-03-19 | 2001-03-29 | Viessmann Werke Kg | Compact boiler, especially for use as a condensing boiler |
| DE10026549C1 (en) * | 2000-05-27 | 2001-11-22 | Viessmann Werke Kg | Boiler with coiled heat exchanger, has coil which is compressible relative to counter bearing in burner casing |
| NL2011646C2 (en) * | 2013-10-18 | 2015-04-23 | Dejatech Ges B V | Heat exchanger, set and method for forming the same. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1948146U (en) * | 1966-08-03 | 1966-10-20 | Rheinstahl Eisenwerk Hilden A | ARRANGEMENT FOR SEALING ARTICULATED BOILERS. |
| CH646773A5 (en) * | 1979-02-19 | 1984-12-14 | Viessmann Hans | HEATING BOILER liquids for OR GASFOERMIGE FUELS. |
| DE3718115C1 (en) * | 1987-05-29 | 1988-09-08 | Viessmann Hans | Boiler |
-
1989
- 1989-10-31 DE DE8912866U patent/DE8912866U1/en not_active Expired - Lifetime
-
1990
- 1990-10-19 EP EP90914897A patent/EP0451234B1/en not_active Expired - Lifetime
- 1990-10-19 AT AT90914897T patent/ATE84868T1/en not_active IP Right Cessation
- 1990-10-19 CA CA002044282A patent/CA2044282A1/en not_active Abandoned
- 1990-10-19 FI FI913065A patent/FI913065A0/en not_active Application Discontinuation
- 1990-10-19 WO PCT/DE1990/000795 patent/WO1991006813A1/en active IP Right Grant
- 1990-10-19 DE DE9090914897T patent/DE59000793D1/en not_active Expired - Fee Related
- 1990-10-19 ES ES199090914897T patent/ES2038521T3/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0451234A1 (en) | 1991-10-16 |
| DE59000793D1 (en) | 1993-03-04 |
| DE8912866U1 (en) | 1991-05-08 |
| ATE84868T1 (en) | 1993-02-15 |
| ES2038521T3 (en) | 1993-07-16 |
| WO1991006813A1 (en) | 1991-05-16 |
| FI913065A7 (en) | 1991-06-24 |
| FI913065A0 (en) | 1991-06-24 |
| EP0451234B1 (en) | 1993-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 19930419 |