CA1178032A - Solid fuel burning stove and catalytic converter - Google Patents
Solid fuel burning stove and catalytic converterInfo
- Publication number
- CA1178032A CA1178032A CA000416820A CA416820A CA1178032A CA 1178032 A CA1178032 A CA 1178032A CA 000416820 A CA000416820 A CA 000416820A CA 416820 A CA416820 A CA 416820A CA 1178032 A CA1178032 A CA 1178032A
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- stove
- opening
- door
- converter
- 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
- 230000003197 catalytic effect Effects 0.000 title claims abstract 12
- 239000004449 solid propellant Substances 0.000 title claims 7
- 238000002485 combustion reaction Methods 0.000 claims abstract 31
- 239000000567 combustion gas Substances 0.000 claims abstract 5
- 239000011521 glass Substances 0.000 claims abstract 3
- 230000005484 gravity Effects 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims 2
- 210000004027 cell Anatomy 0.000 claims 2
- 239000003344 environmental pollutant Substances 0.000 claims 2
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 230000001590 oxidative effect Effects 0.000 claims 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims 2
- 231100000719 pollutant Toxicity 0.000 claims 2
- 208000036366 Sensation of pressure Diseases 0.000 claims 1
- 230000002730 additional effect Effects 0.000 claims 1
- 210000003850 cellular structure Anatomy 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 229910052763 palladium Inorganic materials 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 229910052697 platinum Inorganic materials 0.000 claims 1
- 238000005192 partition Methods 0.000 abstract 2
- 239000006227 byproduct Substances 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
Landscapes
- Incineration Of Waste (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
This stove is divided by a partition into a lower, combustion chamber, and an upper chamber which communicates directly with an exhaust opening in the stove. A catalytic converter is removably mounted in an opening in the partition.
A by-pass damper, which is connected to the stove door, is normally held closed over a by-pass opening in the wall Or the lower chamber, when the door to the stove is closed, whereby all combustion gases from the lower chamber must pass upwardly through the converter and the secondary chamber to the exhaust opening. When the stove door is opened, the by-pass damper tilts by gravity into an open position so that combustion gases from the lower chamber pass directly to the exhaust opening rather through the upper chamber, and rather than being accidentally discharged out of the open door. The converter causes all by-products of combustion to be subjected to a secondary combustion in the converter before passing to the exhaust opening. A
fan blows air under pressure into a space formed between the stove and a surrounding heat shield thereby to distribute more heat, and to prevent overheating of the walls of the stove. Primary combustion air is admitted by a damper to the bottom of the stove, and secondary air is admitted through an opening in the stove door around the edges of two glass panes which are mounted in the door.
This stove is divided by a partition into a lower, combustion chamber, and an upper chamber which communicates directly with an exhaust opening in the stove. A catalytic converter is removably mounted in an opening in the partition.
A by-pass damper, which is connected to the stove door, is normally held closed over a by-pass opening in the wall Or the lower chamber, when the door to the stove is closed, whereby all combustion gases from the lower chamber must pass upwardly through the converter and the secondary chamber to the exhaust opening. When the stove door is opened, the by-pass damper tilts by gravity into an open position so that combustion gases from the lower chamber pass directly to the exhaust opening rather through the upper chamber, and rather than being accidentally discharged out of the open door. The converter causes all by-products of combustion to be subjected to a secondary combustion in the converter before passing to the exhaust opening. A
fan blows air under pressure into a space formed between the stove and a surrounding heat shield thereby to distribute more heat, and to prevent overheating of the walls of the stove. Primary combustion air is admitted by a damper to the bottom of the stove, and secondary air is admitted through an opening in the stove door around the edges of two glass panes which are mounted in the door.
Claims (14)
1. A solid fuel burning stove, which comprises a com-bustion chamber, and a flue for removing exhaust from said chamber, the improvement of a catalytic converter for oxidizing oxidizable species in said exhaust, located either in said com-bustion chamber or in said flue, at a location wherein the temperature produced by heat liberated from burning solid fuels is sufficiently high to sustain the catalytic oxi-dation of the volatibles contained in solid fuels, said stove further comprising means for admitting air for combustion to said chamber, including a door on said combustion chamber move-able between open and closed positions relative to a first opening in said chamber and a second opening in said combustion chamber adjacent the bottom thereof, the combustion chamber having therein two further openings for exhausting combustion gases from said chamber to the exterior thereof, means for selectively closing one of said two further openings, and said converter being positioned to communicate with the other of said two further openings so that, when said one opening is closed, all said gases from said combustion chamber are caused to pass through said converter.
2. A stove as claimed in claim 1, wherein said closing means includes means automatically closing said other opening when said door is closed, and opening said other opening, when said door is opened.
3. A stove as claimed in claim 1, wherein said door has therein at least one pane of glass secured across an opening in said door, and said means for admitting air to said box further includes means for directing at least a portion of said air across the inside surface of said pane to help keep said surface clean.
4. A stove as claimed in claim 3, wherein there are two panes of glass secured across said opening in said door in spaced, parallel relation, and at least a portion of the peri-pheral edge of each of said panes is spaced from the periphery of the opening in said door, thereby to admit additional air to said chamber through said opening in the door.
5. A stove as claimed in claim 4, wherein said portions of said edges of said panes are located adjacent diametrally opposite edges of the opening in said door, whereby said addi-tional air passes through the space between said panes during passage thereof into said combustion chamber.
6. A stove as claimed in claim 1, including a heat shield surrounding a portion of said chamber in spaced, confronting relation to said portion, and means for directing air under pres-sure into the space between the said shield and said chamber.
7. A stove as claimed in claim 1, including a secondary chamber mounted on said combustion chamber and communicating through said converter with the interior of said combustion chamber, and a transparent sight member mounted in the wall of said secondary chamber and registering with said converter to permit viewing of the converter from the exterior of said com-bustion chamber and said secondary chamber.
8. A stove as claimed in claim 1, wherein said other of said two openings is in a portion of a wall of said combustion chamber which is inclined to the vertical, said closing means comprising a damper mounted for movement by gravity from a closed position over said other opening to an open position relative thereto, and said damper is connected to said door to be moved thereby from its open to its closed position each time said door is closed.
9. A stove as claimed in claim 8, wherein said door is mounted on the front wall of said fire box, and said other of said two openings is formed in an inclined portion of the rear wall of said combustion chamber, a plate projects horizontally from the rear wall of said combustion chamber adjacent the lower edge thereof, and part way into said combustion chamber in spaced, parallel relation to the bottom thereof, and an ash pan is removably mounted on the bottom of combustion chamber and projects adjacent its inner end beneath said plate.
10. A stove as claimed in claim 1 or 9, wherein said con-verter comprises a catalytic coating of palladium or platinum.
11. A stove as claimed in claim 1 or 9, wherein said con-verter is coaxially mounted in a metal sleeve.
12. A solid fuel burning stove, which comprises a com-bustion chamber, and a flue for removing exhaust from said chamber, the improvement of a catalytic converter for oxidizing oxidizable species in said exhaust, located either in said com-bustion chamber or in said flue, at a location wherein the tem-perature produced by heat liberated from burning solid fuels is sufficiently high to sustain the catalytic oxidation of the volatibles contained in solid fuels, wherein the cata-lytic converter means has a honeycomb structure situated for the exhaust to normally pass through it to the flue and the stove includes an exhaust bypass means for allowing at least a portion of the exhaust to bypass the porous catalytic structure, said stove comprising means for admitting air for combustion to said chamber, including a door on said combustion chamber move-able between open and closed positions relative to a first opening in said chamber and a second opening in said combustion chamber adjacent the bottom thereof, the combustion chamber having therein two further openings for exhausting combustion gases from said chamber to the exterior thereof, means for selectively closing one of said two further openings, and said converter being positioned to communicate with the other of said two further openings so that, when said one opening is closed, all said gases from said combustion chamber are caused to pass through said converter.
13. A stove as claimed in claim 12, wherein the cata-lytic converter means is mounted in a moveable structure compris-ing the exhaust bypass means whereby the converter means is moveable to permit at least some of the exhaust to bypass the converter means.
14. An atmosphere pollutant control device, for a stove having a fire box having therein a combustion chamber, a door on said box moveable between open and closed positions relative to a first opening in said box, means for admitting air for combustion to said chamber, including a second opening in said box adjacent the bottom thereof, said pollutant control device comprising:
two exhaust paths for exhausting combustion gases to the exterior, a catalytic converter mounted in one of said two exhaust paths, so located that the heat from the combustion in said chamber is sufficient to activate said catalytic converter, said converter comprising a cellular structure having a plurality of closely-spaced cells or ducts extending axially therethrough and appearing in cross-section with walls of the cells or ducts arranged in intersecting rows and columns, and means for selectively closing the other of said two exhaust paths, said converter being positioned so that, when said other path is closed, substantially all said gases from said combustion chamber are caused to pass through said converter.
two exhaust paths for exhausting combustion gases to the exterior, a catalytic converter mounted in one of said two exhaust paths, so located that the heat from the combustion in said chamber is sufficient to activate said catalytic converter, said converter comprising a cellular structure having a plurality of closely-spaced cells or ducts extending axially therethrough and appearing in cross-section with walls of the cells or ducts arranged in intersecting rows and columns, and means for selectively closing the other of said two exhaust paths, said converter being positioned so that, when said other path is closed, substantially all said gases from said combustion chamber are caused to pass through said converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000416820A CA1178032A (en) | 1980-04-02 | 1982-12-01 | Solid fuel burning stove and catalytic converter |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US136,687 | 1980-04-02 | ||
| US06/136,687 US4494525A (en) | 1980-04-02 | 1980-04-02 | Stove with catalytic converter |
| CA000374510A CA1178031A (en) | 1980-04-02 | 1981-04-02 | Solid fuel burning stove and catalytic converter |
| CA000416820A CA1178032A (en) | 1980-04-02 | 1982-12-01 | Solid fuel burning stove and catalytic converter |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000374510A Division CA1178031A (en) | 1980-04-02 | 1981-04-02 | Solid fuel burning stove and catalytic converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1178032A true CA1178032A (en) | 1984-11-20 |
Family
ID=27167019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000416820A Expired CA1178032A (en) | 1980-04-02 | 1982-12-01 | Solid fuel burning stove and catalytic converter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1178032A (en) |
-
1982
- 1982-12-01 CA CA000416820A patent/CA1178032A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |