US3641953A - Boiler construction - Google Patents
Boiler construction Download PDFInfo
- Publication number
- US3641953A US3641953A US861415A US3641953DA US3641953A US 3641953 A US3641953 A US 3641953A US 861415 A US861415 A US 861415A US 3641953D A US3641953D A US 3641953DA US 3641953 A US3641953 A US 3641953A
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- United States
- Prior art keywords
- refractory
- enclosure
- gases
- boiler
- heat insulating
- Prior art date
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- Expired - Lifetime
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Classifications
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- 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
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0026—Guiding means in combustion gas channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M2700/00—Constructional details of combustion chambers
- F23M2700/005—Structures of combustion chambers or smoke ducts
-
- 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
- F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
- F24H1/0045—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel with catalytic combustion
Definitions
- Oil-fired boilers for central heating purposes have the shortcoming that the smoke therefrom contains varying amounts of unburned solids, with consequent varying color of the smoke.
- a boiler according to the invention includes a combustion chamber operating at high temperature, the relatively cold metallic water jacket or water tube surfaces of the boiler being insulated within the combustion chamber from the hot gases of combustion by a layer of refractory insulating material having hot spots thereon. It also comprises, between the combustion chamber and the stack, in the sense of combustion gas flow, a chamber for heat exchange between the gases and the water jackets or water tubes. The passage of the combustion gases from the first chamber to the second occurs at least in part through a filtering partition made of refractory insulating material.
- the preferred insulating material is made of mineral and/or ceramic fibers made up into felts or pads.
- the hot spots are preferably produced by a grill or grid of refractory metal disposed on the face of the pads which is exposed to the flames. It is desirable to provide such a grid on both sides of the pads in order to improve their mechanical stability and to make it possible to reverse the pads when the grids initially exposed to the flames have been consumed.
- the boiler shown in the drawing comprises an enclosure of parallelepiped shape. This is shown in the drawing as including vertical front and back walls 2 and 2' and a roof 2", which may be made of brickwork for example, or of asbestos coated onto the iron castings making up the water jacket in a boiler for domestic heating, to take another example.
- the enclosure also includes vertical sidewalls, parallel to the plane of the figure and not shown therein, but of the same construction as the front and back walls 2 and 2'. It also includes a base plate 3, which may be of iron.
- a burner is attached to the front wall of the boiler as indicated at l in the figure.
- the vertical walls are lined with water jackets as indicated at 11, or alternatively with water tubes.
- the base plate and the vertical walls are moreover lined, inside the water jackets or water tubes and part way up their height, with refractory insulating pads as indicated at 4 made of mineral fiber, the pads being disposed between metallic grids S of stainless refractory steel.
- the pads may be made for example of kaolin fibers.
- the insulated combustion chamber 8 thus defined by these pads is closed at the top by means of a horizontal filtering partition generally indicated at 6, made of heat insulating material such as ceramic fiber cloth l2 reinforced with one or more metallic gratings 13.
- An opening 7 is preferably left at one end of the partition, adjacent one of the vertical walls, to permit escape of the products of combustion if the filtering partition should become obstructed.
- the joints between the filtering partition 6 and the pads 4 with their grids 5 are carefully sealed with ceramic fiber cement.
- the upper portion 9 of the boiler, above the partition 6, thus constitutes a heat exchange chamber in the usual way, bounded in part by the water jackets or water tubes of the boiler and traversed by the hot gases before they escape through the stack 10 where the Bacharach index may be measured.
- the heat insulating pads 4 which line it retard the transmission of heat to the metallic surfaces of the boiler (i.e., to the metallic surfaces of the water jackets 11 or of the water tubes) so that the temperature in this chamber and on the walls 4 thereof is much higher than in boilers of normal construction. Combustion is accordingly improved. That is, the internal surfaces of the pads 4 are raised to high temperatures and the metallic grids or gratings 5 on the inner surfaces of these pads, being of small heat capacity, are raised to red heat promptly upon ignition.
- the grids 5 thus function as means to ignite the unburned solid particles which strike against the pads. Under these conditions such particles are to a large extent burned, raising the temperature of the walls of the combustion chamber 8 and further improving combustion throughout it. Any unburned solids in the gases aspirated out of the combustion chamber by the draft provided by the chimney are arrested by the filtering partition 6, which may optionally have imparted thereto a catalytic action to promote burning of such particulate residues.
- the invention encloses the flames and protects the water-gas heat exchange surfaces in the combustion chamber, while raising the temperature at points more remote from the flame, thus transposing downstream in the path of the combustion gases a part of the process of heat exchange with the water. It has however been additionally observed that the temperature of the exhaust gases in the stack is reduced, which represents, other things being equal, an economy of fuel.
- the invention can moreover readily be incorporated into an existing boiler.
- Each of these boilers I and II was provided with a combustion chamber in accordance with the invention by applying to the walls of the firebox and to the baseplate thereof pads of kaolin wool fiber. These pads were 12 to 13 mm. thick and had an apparent density of 0.1 grams per cubic cm. The pads were enclosed between refractory stainless steel grids made of 0.3 mm. diameter wire with 2.5 mm. width mesh.
- the combustion chambers of the boilers l and Il so lined were provided, at 30 and 80 cm. respectively above their baseplates, with filtering partitions made of refractory cloth 2.5 mm. in thickness and weighing approximately 1 kilogram per square meter. This cloth was woven of threads made up of two twisted filaments, each having a metallic core and a coating of kaolin wool fibers.
- the cloth was enclosed between refractory metallic grids similar to those applied to the wall pads.
- the opening through the partition had a surface of 560 cm. for the boiler l and of 3.200 cm. for the boiler ll. Modification of the boilers in accordance with the invention reduced the Bacharach index from five to zero for the boiler I and from six to zero for the boiler 11.
- the invention thus provides a boiler comprising means defining an enclosure limited at least in part by the walls of a vessel or vessels, such as water tubes or the jackets 11, in the embodiment illustrated, adapted to contain water to be heated.
- the enclosure may be further limited, as in the embodiment illustrated, by walls 2 and 2' of heat insulating material outside those vessels, and by a roof 2" and a base plate 3.
- the boiler also includes a stack for the exhaust of gases of combustion from the enclosure.
- a plurality of sheets or pads 4 of refractory heat insulating material line a part of this enclosure, which part is at least partially closed off from the remainder of the enclosure by a sheet of refractory material 6, permeable to gases but acting as a filter to arrest unburned particles of fuel.
- the sheets of refractory heat insulating material and the sheet of gas permeable refractory material may have applied thereto and may be reinforced by grids or gratings of refractory metal.
- the gas permeable filter sheet thus divides the enclosure into a firebox proper 8, wherein fuel is burned with the aid of a burner or firing device 1, and a heat exchange chamber 9 whose walls are defined at least in part by the water-containing vessel or vessels 1 l free of heat insulating lining.
- a boiler comprising means definingan enclosure limited at least in part by the walls of a water-containing vessel, means permitting the exhaust of gases of combustion from the enclosure, refractory heat insulating material in sheet form lining at least a part of the enclosure, a refractory metallic grating on at least a part of the inner surface of said refractory heat insulating material, fuel burning means in said part of the enclosure, and a sheet of refractory material permeable to gases at least partially closing off said part of the enclosure from the remainder thereof.
- a boiler according to claim 1 further including a refractory metallic grating supported on at least a part of the inner surface of the sheets of refractory heat insulating material.
- a boiler according to claim 1 including a metallic grating on each side of said refractory heat insulating material.
- a boiler according to claim 1 wherein said refractory heat insulating material in sheet form is made of mineral fibers.
- a boiler according to claim 1 wherein the sheet of refractory material permeable to gases comprises a cloth woven from refractory fibers.
- a boiler according to claim 1 including a refractory grating on the side of the sheet of refractory material permeable to gases adjacent to said part of the enclosure.
- a boiler comprising means defining an enclosure limited at least in part by the walls of a water-containing vessel, means permitting the exhaust of gases of combustion from the enclosure, refractory heat insulating material in sheet form lining at least a part of the enclosure, a refractory metallic grating on at least a part of the inner surface of said refractory heat insulating material, fuel burning means in said part of the enclosure,
- said sheet of refractory material comprising a cloth woven from refractory fibers.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Woven Fabrics (AREA)
- Solid-Fuel Combustion (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
A boiler is provided, inside the water tubes or water jackets thereof, with a lining to its firebox or combustion chamber in the form of sheets or pads of mineral wool fiber enclosed between refractory steel grids, and with a refractory filter sheet of cloth woven of ceramic or mineral fiber filaments, permeable to gases but capable of holding back particulate material, the filter sheet extending over a major part of the exit from the combustion chamber and defining beyond it a heat exchange chamber in which the gases of combustion largely freed of particulate matter pass over heat exchange surfaces of the boiler water jackets or water tubes.
Description
Uite
tates Patem Herzberg Feb. 15, 1197 2 [54] BOILER CONSTRUCTIGN 3,336,716 8/1967 Scheppers ..126/144 X [72] Inventor: Claude Herzberg, BYOB, France FOREIGN PATENTS OR APPLICATIONS [731 Assigneel Swim Pmduils Reimmires, 610,978 12/1960 Canada ..126/144 Paris, France [22] Filed: Sept. 26, 1969 Primary Examiner-Edward G. Favors pp No: 861,415 An0meyPennie, Edmonds, Morton, Taylor and Adams [57] ABSTRACT [30] Foreign Application Priority Data A boiler is provided, inside the water tubes or water jackets Sept. 30, 1968 France ..168135 thereof, with a lining to its firebox or combustion chamber in the form of sheets or pads of mineral wool fiber enclosed U-So CL R, between refractory steel grids and a refractory filter [Sll -F23m 9/06 sheet of cloth woven of ceramic or mineral fiber filaments, [58] Field Of Search ..l 10/97, 98, 8 A; 126/144 permeable to gases but Capable of holding back particulate material, the filter sheet extending over a major part of the [56] References Cited exit from the combustion chamber and defining beyond it a UNITED STATES PATENTS heat exchange chamber in which the gases of combustion largely freed of partlculate matter pass over heat exchange sur- 2,245,322 6/ 1 941 Bork 122/ 1 56 faces f the boiler water jackets or water tubes 2,658,742 11/1953 Sutter et al. ....110/8 X 3,324,845 6/1967 White ..110/97 X 7 Claims, 1 Drawing Figure q g I I I: l C 2 --f I l W s m N BOILER CONSTRUCTION The present invention pertains to improvements in boilers, both for domestic heating and for industrial purposes, the invention permitting a substantial reduction in the quantity of unburned fuel particles which appear in the exhaust gases therefrom.
Oil-fired boilers for central heating purposes have the shortcoming that the smoke therefrom contains varying amounts of unburned solids, with consequent varying color of the smoke.
In order to measure easily the quantity of solids in smoke there is employed a so-called Bacharach apparatus in which a specified volume of smoke is caused to pass through a filter paper on which the solids are recovered. By means of a colorimetric measurement of the paper there is obtained an index number on a scale extending from zero for no deposit to for the case in which the paper has been rendered black and opaque. In practice new boilers in good condition are characterized by an index of the order of five or six. The smoke therefrom is hardly visible. While this is satisfactory to the eye, the result is nevertheless substantial air pollution in urban areas.
The fact that the smoke from boilers possesses a Bacharach index of at least five, even when operating properly, is due to the fact that the heat exchange between the gases of combustion and the circulating water occurs across metallic surfaces whose temperature is close to that of the water, and therefore much lower than that of the combustion gases. In order to obtain satisfactory efficiency, the fuel burners are adjusted to provide a long flame. Consequently combustion is not completed close to the burner proper but extends over a substantial path length toward the exhaust stack. At points of greater and greater distance from the burner, the influence of the cold metallic heat exchange surfaces becomes greater and greater, with the combustion deteriorating in consequence so that unburned particles remain in the gases exhausted to the stack. Moreover this tendency worsens with time, so that the Bacharach index, about five for a new boiler, increases with age due to the deposit of soot on the heat exchange surfaces.
A boiler according to the invention includes a combustion chamber operating at high temperature, the relatively cold metallic water jacket or water tube surfaces of the boiler being insulated within the combustion chamber from the hot gases of combustion by a layer of refractory insulating material having hot spots thereon. It also comprises, between the combustion chamber and the stack, in the sense of combustion gas flow, a chamber for heat exchange between the gases and the water jackets or water tubes. The passage of the combustion gases from the first chamber to the second occurs at least in part through a filtering partition made of refractory insulating material.
The preferred insulating material is made of mineral and/or ceramic fibers made up into felts or pads. The hot spots are preferably produced by a grill or grid of refractory metal disposed on the face of the pads which is exposed to the flames. It is desirable to provide such a grid on both sides of the pads in order to improve their mechanical stability and to make it possible to reverse the pads when the grids initially exposed to the flames have been consumed.
BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be further described in terms of an exemplary embodiment and by reference to the accompanying drawings in which the single figure of drawing is a schematic vertical sectional view through a boiler in accordance with the invention.
DESCRIPTION OF PREFERRED EMBODIMENT The boiler shown in the drawing comprises an enclosure of parallelepiped shape. This is shown in the drawing as including vertical front and back walls 2 and 2' and a roof 2", which may be made of brickwork for example, or of asbestos coated onto the iron castings making up the water jacket in a boiler for domestic heating, to take another example. The enclosure also includes vertical sidewalls, parallel to the plane of the figure and not shown therein, but of the same construction as the front and back walls 2 and 2'. It also includes a base plate 3, which may be of iron. A burner is attached to the front wall of the boiler as indicated at l in the figure. The vertical walls are lined with water jackets as indicated at 11, or alternatively with water tubes. The base plate and the vertical walls are moreover lined, inside the water jackets or water tubes and part way up their height, with refractory insulating pads as indicated at 4 made of mineral fiber, the pads being disposed between metallic grids S of stainless refractory steel. The pads may be made for example of kaolin fibers. The insulated combustion chamber 8 thus defined by these pads is closed at the top by means of a horizontal filtering partition generally indicated at 6, made of heat insulating material such as ceramic fiber cloth l2 reinforced with one or more metallic gratings 13. An opening 7 is preferably left at one end of the partition, adjacent one of the vertical walls, to permit escape of the products of combustion if the filtering partition should become obstructed. The joints between the filtering partition 6 and the pads 4 with their grids 5 are carefully sealed with ceramic fiber cement. The upper portion 9 of the boiler, above the partition 6, thus constitutes a heat exchange chamber in the usual way, bounded in part by the water jackets or water tubes of the boiler and traversed by the hot gases before they escape through the stack 10 where the Bacharach index may be measured.
When flames are established in the combustion chamber 8, the heat insulating pads 4 which line it retard the transmission of heat to the metallic surfaces of the boiler (i.e., to the metallic surfaces of the water jackets 11 or of the water tubes) so that the temperature in this chamber and on the walls 4 thereof is much higher than in boilers of normal construction. Combustion is accordingly improved. That is, the internal surfaces of the pads 4 are raised to high temperatures and the metallic grids or gratings 5 on the inner surfaces of these pads, being of small heat capacity, are raised to red heat promptly upon ignition. The grids 5 thus function as means to ignite the unburned solid particles which strike against the pads. Under these conditions such particles are to a large extent burned, raising the temperature of the walls of the combustion chamber 8 and further improving combustion throughout it. Any unburned solids in the gases aspirated out of the combustion chamber by the draft provided by the chimney are arrested by the filtering partition 6, which may optionally have imparted thereto a catalytic action to promote burning of such particulate residues.
This cleaning of the smoke is not the only advantage of the invention. The invention encloses the flames and protects the water-gas heat exchange surfaces in the combustion chamber, while raising the temperature at points more remote from the flame, thus transposing downstream in the path of the combustion gases a part of the process of heat exchange with the water. It has however been additionally observed that the temperature of the exhaust gases in the stack is reduced, which represents, other things being equal, an economy of fuel.
The invention can moreover readily be incorporated into an existing boiler.
By way of example the invention has been applied to two oil-fired boilers of the following characteristics:
Each of these boilers I and II was provided with a combustion chamber in accordance with the invention by applying to the walls of the firebox and to the baseplate thereof pads of kaolin wool fiber. These pads were 12 to 13 mm. thick and had an apparent density of 0.1 grams per cubic cm. The pads were enclosed between refractory stainless steel grids made of 0.3 mm. diameter wire with 2.5 mm. width mesh. The combustion chambers of the boilers l and Il so lined were provided, at 30 and 80 cm. respectively above their baseplates, with filtering partitions made of refractory cloth 2.5 mm. in thickness and weighing approximately 1 kilogram per square meter. This cloth was woven of threads made up of two twisted filaments, each having a metallic core and a coating of kaolin wool fibers. The cloth was enclosed between refractory metallic grids similar to those applied to the wall pads. The opening through the partition had a surface of 560 cm. for the boiler l and of 3.200 cm. for the boiler ll. Modification of the boilers in accordance with the invention reduced the Bacharach index from five to zero for the boiler I and from six to zero for the boiler 11.
The invention thus provides a boiler comprising means defining an enclosure limited at least in part by the walls of a vessel or vessels, such as water tubes or the jackets 11, in the embodiment illustrated, adapted to contain water to be heated. The enclosure may be further limited, as in the embodiment illustrated, by walls 2 and 2' of heat insulating material outside those vessels, and by a roof 2" and a base plate 3. The boiler also includes a stack for the exhaust of gases of combustion from the enclosure.
A plurality of sheets or pads 4 of refractory heat insulating material line a part of this enclosure, which part is at least partially closed off from the remainder of the enclosure by a sheet of refractory material 6, permeable to gases but acting as a filter to arrest unburned particles of fuel. The sheets of refractory heat insulating material and the sheet of gas permeable refractory material may have applied thereto and may be reinforced by grids or gratings of refractory metal.
The gas permeable filter sheet thus divides the enclosure into a firebox proper 8, wherein fuel is burned with the aid of a burner or firing device 1, and a heat exchange chamber 9 whose walls are defined at least in part by the water-containing vessel or vessels 1 l free of heat insulating lining.
1 claim:
1. A boiler comprising means definingan enclosure limited at least in part by the walls of a water-containing vessel, means permitting the exhaust of gases of combustion from the enclosure, refractory heat insulating material in sheet form lining at least a part of the enclosure, a refractory metallic grating on at least a part of the inner surface of said refractory heat insulating material, fuel burning means in said part of the enclosure, and a sheet of refractory material permeable to gases at least partially closing off said part of the enclosure from the remainder thereof.
2. A boiler according to claim 1 further including a refractory metallic grating supported on at least a part of the inner surface of the sheets of refractory heat insulating material.
3. A boiler according to claim 1 including a metallic grating on each side of said refractory heat insulating material.
4. A boiler according to claim 1 wherein said refractory heat insulating material in sheet form is made of mineral fibers.
5. A boiler according to claim 1 wherein the sheet of refractory material permeable to gases comprises a cloth woven from refractory fibers.
6. A boiler according to claim 1 including a refractory grating on the side of the sheet of refractory material permeable to gases adjacent to said part of the enclosure.
7. A boiler comprising means defining an enclosure limited at least in part by the walls of a water-containing vessel, means permitting the exhaust of gases of combustion from the enclosure, refractory heat insulating material in sheet form lining at least a part of the enclosure, a refractory metallic grating on at least a part of the inner surface of said refractory heat insulating material, fuel burning means in said part of the enclosure,
and a sheet of refractory material permeable to gases at least partially closing off said part 0 the enclosure from the remainder thereof, said sheet of refractory material comprising a cloth woven from refractory fibers.
IUILIAA
Claims (7)
1. A boiler comprising means defining an enclosure limited at least in part by the walls of a water-containing vessel, means permitting the exhaust of gases of combustion from the enclosure, refractory heat insulating material in sheet form lining At least a part of the enclosure, a refractory metallic grating on at least a part of the inner surface of said refractory heat insulating material, fuel burning means in said part of the enclosure, and a sheet of refractory material permeable to gases at least partially closing off said part of the enclosure from the remainder thereof.
2. A boiler according to claim 1 further including a refractory metallic grating supported on at least a part of the inner surface of the sheets of refractory heat insulating material.
3. A boiler according to claim 1 including a metallic grating on each side of said refractory heat insulating material.
4. A boiler according to claim 1 wherein said refractory heat insulating material in sheet form is made of mineral fibers.
5. A boiler according to claim 1 wherein the sheet of refractory material permeable to gases comprises a cloth woven from refractory fibers.
6. A boiler according to claim 1 including a refractory grating on the side of the sheet of refractory material permeable to gases adjacent to said part of the enclosure.
7. A boiler comprising means defining an enclosure limited at least in part by the walls of a water-containing vessel, means permitting the exhaust of gases of combustion from the enclosure, refractory heat insulating material in sheet form lining at least a part of the enclosure, a refractory metallic grating on at least a part of the inner surface of said refractory heat insulating material, fuel burning means in said part of the enclosure, and a sheet of refractory material permeable to gases at least partially closing off said part of the enclosure from the remainder thereof, said sheet of refractory material comprising a cloth woven from refractory fibers.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR168135 | 1968-09-30 |
Publications (1)
Publication Number | Publication Date |
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US3641953A true US3641953A (en) | 1972-02-15 |
Family
ID=8655083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US861415A Expired - Lifetime US3641953A (en) | 1968-09-30 | 1969-09-26 | Boiler construction |
Country Status (11)
Country | Link |
---|---|
US (1) | US3641953A (en) |
BE (1) | BE739083A (en) |
CH (1) | CH514817A (en) |
DE (1) | DE1949036C3 (en) |
FI (1) | FI52401C (en) |
FR (1) | FR1603973A (en) |
GB (1) | GB1214770A (en) |
LU (1) | LU59518A1 (en) |
NL (1) | NL6914713A (en) |
NO (1) | NO124960B (en) |
SE (1) | SE355659B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4406614A (en) * | 1981-02-11 | 1983-09-27 | Arne Pedersen | Boiler liner for oil- or gas-fired boilers as well as procedure for the mounting of same |
DE3340107A1 (en) * | 1983-11-05 | 1985-05-15 | Franz X. 6200 Wiesbaden Wittek | Process for the operation of heating boilers with atomisable fuels and heating boiler for carrying out the process |
US4587949A (en) * | 1984-05-07 | 1986-05-13 | Schott Lawrence A | Combustion heater |
USRE40590E1 (en) * | 1996-01-19 | 2008-12-02 | Hearth Technologies Inc. | Universal non-porous fiber reinforced combustion chamber fireplace |
US20140220501A1 (en) * | 2011-09-08 | 2014-08-07 | Reformtech Heating Holding Ab | Burner comprising a reactor for catalytic burning |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3819468A (en) * | 1971-06-28 | 1974-06-25 | Sander Ind Inc | High temperature insulation module |
WO1981001603A1 (en) * | 1979-12-05 | 1981-06-11 | A Pedersen | Boiler liner for oil-or gas-fired boilers as well as procedure for the mounting of same |
DE3144744C2 (en) * | 1981-11-11 | 1984-04-12 | Lafarge Réfractaires, 92542 Montronge | Heating boiler |
DE3409106A1 (en) * | 1984-03-13 | 1985-09-19 | Deutsche Babcock Werke AG, 4200 Oberhausen | COMBUSTION CHAMBER |
GB9108880D0 (en) * | 1991-04-25 | 1991-06-12 | Coal Industry Patents Ltd | Improvements in or relating to boilers |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2245322A (en) * | 1941-06-10 | Boiler | ||
US2658742A (en) * | 1950-01-09 | 1953-11-10 | Harold R Suter | Catalytic fume incineration |
CA610978A (en) * | 1960-12-20 | A. Clark William | Furnace construction | |
US3324845A (en) * | 1965-03-30 | 1967-06-13 | Carrier Corp | Fuel burning apparatus |
US3336716A (en) * | 1963-07-10 | 1967-08-22 | Johns Manville | Furnace combustion chamber with a transverse composition differential |
-
1968
- 1968-09-30 FR FR168135A patent/FR1603973A/fr not_active Expired
-
1969
- 1969-09-16 CH CH1398869A patent/CH514817A/en not_active IP Right Cessation
- 1969-09-19 BE BE739083D patent/BE739083A/xx unknown
- 1969-09-23 SE SE13080/69A patent/SE355659B/xx unknown
- 1969-09-26 US US861415A patent/US3641953A/en not_active Expired - Lifetime
- 1969-09-26 LU LU59518D patent/LU59518A1/xx unknown
- 1969-09-27 DE DE1949036A patent/DE1949036C3/en not_active Expired
- 1969-09-29 FI FI692789A patent/FI52401C/en active
- 1969-09-29 NL NL6914713A patent/NL6914713A/xx not_active Application Discontinuation
- 1969-09-29 NO NO3872/69A patent/NO124960B/no unknown
- 1969-09-30 GB GB48020/69A patent/GB1214770A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2245322A (en) * | 1941-06-10 | Boiler | ||
CA610978A (en) * | 1960-12-20 | A. Clark William | Furnace construction | |
US2658742A (en) * | 1950-01-09 | 1953-11-10 | Harold R Suter | Catalytic fume incineration |
US3336716A (en) * | 1963-07-10 | 1967-08-22 | Johns Manville | Furnace combustion chamber with a transverse composition differential |
US3324845A (en) * | 1965-03-30 | 1967-06-13 | Carrier Corp | Fuel burning apparatus |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4406614A (en) * | 1981-02-11 | 1983-09-27 | Arne Pedersen | Boiler liner for oil- or gas-fired boilers as well as procedure for the mounting of same |
DE3340107A1 (en) * | 1983-11-05 | 1985-05-15 | Franz X. 6200 Wiesbaden Wittek | Process for the operation of heating boilers with atomisable fuels and heating boiler for carrying out the process |
US4587949A (en) * | 1984-05-07 | 1986-05-13 | Schott Lawrence A | Combustion heater |
USRE40590E1 (en) * | 1996-01-19 | 2008-12-02 | Hearth Technologies Inc. | Universal non-porous fiber reinforced combustion chamber fireplace |
US20140220501A1 (en) * | 2011-09-08 | 2014-08-07 | Reformtech Heating Holding Ab | Burner comprising a reactor for catalytic burning |
US9618198B2 (en) * | 2011-09-08 | 2017-04-11 | Reformtech Heating Holding Ab | Burner comprising a reactor for catalytic burning |
Also Published As
Publication number | Publication date |
---|---|
DE1949036C3 (en) | 1979-08-16 |
FI52401C (en) | 1977-08-10 |
DE1949036B2 (en) | 1978-12-07 |
BE739083A (en) | 1970-03-02 |
DE1949036A1 (en) | 1970-04-09 |
FI52401B (en) | 1977-05-02 |
NL6914713A (en) | 1970-04-01 |
GB1214770A (en) | 1970-12-02 |
FR1603973A (en) | 1971-06-21 |
CH514817A (en) | 1971-10-31 |
LU59518A1 (en) | 1970-01-09 |
SE355659B (en) | 1973-04-30 |
NO124960B (en) | 1972-06-26 |
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