CA1112967A - Flue arrangement for stove and fireplace - Google Patents
Flue arrangement for stove and fireplaceInfo
- Publication number
- CA1112967A CA1112967A CA302,559A CA302559A CA1112967A CA 1112967 A CA1112967 A CA 1112967A CA 302559 A CA302559 A CA 302559A CA 1112967 A CA1112967 A CA 1112967A
- Authority
- CA
- Canada
- Prior art keywords
- stove
- flue
- fire chamber
- arcuate
- arcuate surface
- 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
Landscapes
- Solid-Fuel Combustion (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A coal or wood burning stove or fireplace is provided herein.
The stove includes a fire chamber, and has a cooking surface, which in-cludes a first flat front surface, a second flat rear surface which defines a plane parallel to, but higher than,the plane of the first surface, and an arcuate surface interconnecting the first and second surfaces, with the ar-cuate surface defining a ninety degree (90°) arc. A cylindrical flue is attached to the stove and extends within the fire chamber forwardly parallel to, and below,the second flat rear surface and rearwardly of the arcuate surface. The flue has a forward open end terminating within the fire cham-ber at the midpoint of the radius of the arcuate surface. The position of the end of the flue with respect to the arcuate surface permits slow, sub-stantially even and substantially complete burning of the fuel in the fire chamber.
A coal or wood burning stove or fireplace is provided herein.
The stove includes a fire chamber, and has a cooking surface, which in-cludes a first flat front surface, a second flat rear surface which defines a plane parallel to, but higher than,the plane of the first surface, and an arcuate surface interconnecting the first and second surfaces, with the ar-cuate surface defining a ninety degree (90°) arc. A cylindrical flue is attached to the stove and extends within the fire chamber forwardly parallel to, and below,the second flat rear surface and rearwardly of the arcuate surface. The flue has a forward open end terminating within the fire cham-ber at the midpoint of the radius of the arcuate surface. The position of the end of the flue with respect to the arcuate surface permits slow, sub-stantially even and substantially complete burning of the fuel in the fire chamber.
Description
'7 The present inyention relates generally to coal or wood burning stoves and fireplaces and more particularly to the flue arrangement with respect to an arcuate portion of the cooking surface of the stove or fire-place.
In conventional stoves or fireplaces the open end of the flue is either attached to the wall forming the fire chamber or extends slightly into the fire chamber. With this arrangement, the fuel is not completely burned since great quantities of unburned fuel particles and heat are vented through the flue and up the chimney.
Those concerned with the efficient use of fuels recognize the need for an improved flue arrsngement for coal or wood burning stoves and fireplaces.
An object of one aspect of the present invention is the provision of an improved stove or fireplace.
An object of another aspect of this invention is to provide a stove or fireplace that permits substantially complete combustion of the fuel and allows longer, cleaner, even burning resulting in minimum heat and fuel loss.
An object of a further aspect of the invention is the provision of a stove or fireplace wherein no grates are needed and cleanup is facilitated due to substantially complete combustion of the fuel.
An object of still another aspect of this invention is to provide a stove or fireplace- capable of using fuels other than wood.
An object of a still further aspect of this invention is to provide a stove or fireplace allowing faster starting, uniform heating, and improved control of combustion for more efficient operation.
By one broad aspect of this invention, a stove is provided having a pair of side walls, a bottom, a rear wall, a front wall, and an upper cooking surface defining t'nerein a fire chamber, the improvement wherein .~ 30 the cooking surface includes a first flatfrontsurface, a second flat
In conventional stoves or fireplaces the open end of the flue is either attached to the wall forming the fire chamber or extends slightly into the fire chamber. With this arrangement, the fuel is not completely burned since great quantities of unburned fuel particles and heat are vented through the flue and up the chimney.
Those concerned with the efficient use of fuels recognize the need for an improved flue arrsngement for coal or wood burning stoves and fireplaces.
An object of one aspect of the present invention is the provision of an improved stove or fireplace.
An object of another aspect of this invention is to provide a stove or fireplace that permits substantially complete combustion of the fuel and allows longer, cleaner, even burning resulting in minimum heat and fuel loss.
An object of a further aspect of the invention is the provision of a stove or fireplace wherein no grates are needed and cleanup is facilitated due to substantially complete combustion of the fuel.
An object of still another aspect of this invention is to provide a stove or fireplace- capable of using fuels other than wood.
An object of a still further aspect of this invention is to provide a stove or fireplace allowing faster starting, uniform heating, and improved control of combustion for more efficient operation.
By one broad aspect of this invention, a stove is provided having a pair of side walls, a bottom, a rear wall, a front wall, and an upper cooking surface defining t'nerein a fire chamber, the improvement wherein .~ 30 the cooking surface includes a first flatfrontsurface, a second flat
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rear surface deflning a plane parallel to, but higher than the plane of the first surface, and an arcuate surface lnterconnecting the flrst and second surfaces, the arcuate surface deflning a ninely degree (90) arc;
and further includlng a cyllndrlcal flue attached to the stove and extend-ing within the fire chamber forwardly parallel to, and below, the second flat rearsurface and rearwardly of the arcuate surface, the flue having a for-ward open end terminating wlthln the flre chamber at the midpoint of the radlus of the arcuate surface.
By a variant thereof, thesecond flat rear surface has an opening formed therein, and the flue extends upwardly through such openlng.
By a further aspect of this invention, the stove includes a rear wall having an opening formed therein, and the flue extends rearwardly through such openlng.
Thus, by aspects of the instant invention, stoves or fireplaces are provided which involve the combination of an arcuate portion of the cooklng surface, which defines the upper part of the fire chamber, and a cylindrical flue disposed within the fire chamber and having an open for-ward end located at the midpoint of the radius of the arcuate portion. The position of the flue relative to the arcuate portion permits the burning particles of fuel to be held in suspension within the fire chamber, thus allowing for substantially complete combustion and substantially eliminating the loss of fuel particles and heat up the chimney.
In the accompanying drawings, Figure 1 is a perspective view of a stove according to an aspect of this invention showing a cooking surface including an arcuate portion extending forwardly and downwardly from a horizontal top portion;
Figure 2 is a top plan view of the stove showing the side walls and flue in dotted lines;
Figure 3 is a front elevational view of the stove taken along line 3-3 of Figure 2;
~h~ '7' Fig. 4 is a sectional view taken along line 4-4 of Fig. 2 showing the relationship of the end of the flue to the arcuate portion of the cooking surface; _ Fig. 5 is a sectional view taken along line 5-5 of Fig. 3 showing the sealing overlap of the doors; .
Fig. 6 is a sectional view taken along line 6-6 of Fig. 3 showing the draft cap; and Fig. 7 is a sectional view taken along line 7-7 of Fig. 4 showing the level adjusting nut of the legs.
Returning ncw to the drawings, wherein like reference numerals designate identical or corresponding p æ ts throughout the several views, Fig. 1 shcws a stove or fireplace 10 including a cooking surface 11 which defines the upper part of the fire chamber or fire box 12 ~Fig. 4). m e cooking surface 11 includes a horizontally disposed top portion 13, an arcuate portion 14 extending forwardly and downwardly from the forward end of the top portion 13, and a horizontally disposed lower portion 15 ex-tending forwardly from the lower end of the arcuate portion 14. r As shown in Fig. 4, the fire chamber 12 is defined by the doors 16, bottom 17, and sidewalls 18, together with surface 11. The fire chamber 12 is lined with fire brick 19 at the bottom, rear and sides; and the upper ends of the fire brick 19 are held secure to the sidewalls 18 by angle 20.
The stove or fireplace 10 is supported by a plurality of legs 21 which in-clude a level adjusting nut 22 (Fig. 7). An ash apron 23 extends forwardly of sidewall 18 below the doors 16.
As shown mDst clearly in Figs. 3-6, the doors 16 are hingedly attached to the front sidewall 18 by hinges 24. When in the closed posi-tion, the doors 16 overlap at 25 (Fig. 5) and substantially seal the fire chamber 12 from the atmosphere. It is understood that when a single door 16 is used, ratller than the double doors 16 shown in the drawings, the free end of the door 16 will seal against sidewall 18. Dcor h3ndles 26 are r-~Ll'~6;7 rotatably mounted on the doors 16 and ~Iclude an internally disposed latch 27 adapted to engage the lip 28 (Fig. 4~ of front sidewall 18 to hold the doors 16 in the closed position. A two-piece draft cap 29 (Fig. 6) is attached to the d`oors 16 and a threadably mounted cover 30 is rotated to increase or decrease the flow of air into the fire chamber 12 and regulate the burning of the fuel.
As best shown in Figs. 2 and 4, the flue 31 extends through an ,_ opening in the top portion 13 of the cooking surface 11 and is attached thereto by weld~ent or the like. It is understood that the flue 31 could likewise extend directly rearward through the rear sidewall 18 if such an arrangement is desired. A portion of the flue 31 extends parallel to the top portion 13 within the fire chamber 12 and the forward open end 32 of the flue 31 terminates at the midpoint of the radius r of the arcuate portion 14. The arcuate portion 14 and the arrangement of the open end 32 of the flue 31 with respect to the arcuate p~rtion 14 is critical to the efficient operation of the stove or fireplace 10.
In operation, a supply of wood or other suitable fuel is placed in the fire c'la~ber 12 and ignited. The doors 16 are then closed and the draft is controlled by adjusbment of the draft caps 29. The fire chamber 12, and specifically the arcuate portion 14 and flue end 32, are so designed and arranged to hold the burning particles of fuel in suspension inside the fire chamber 12 for an extended period of time. This allows for substanti-ally complete combustion of the fuel and minimizes the loss of fuel parti-cles and heat up the chimney. Further, the efficient combustion results in lesser ash accumulation within the fire chamber 12. The flame cradles around the extended flue 31 and creates a vortex effect which increases the turbulence of the hot combustion gases, holds the heat in the fire chamber 12 longer, burns the fuel thoroughly and efficiently, and gives off an even supply of heat over an extended period of time. To extinguish the fire, the ;7 draft caps 29 are simply closed to cut off the flow of air and the fire will extinguish in a matter of minutes.
Thus, it can be seen that a novel flue arrangem~nt for a stove or fireplace has-been provided.
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rear surface deflning a plane parallel to, but higher than the plane of the first surface, and an arcuate surface lnterconnecting the flrst and second surfaces, the arcuate surface deflning a ninely degree (90) arc;
and further includlng a cyllndrlcal flue attached to the stove and extend-ing within the fire chamber forwardly parallel to, and below, the second flat rearsurface and rearwardly of the arcuate surface, the flue having a for-ward open end terminating wlthln the flre chamber at the midpoint of the radlus of the arcuate surface.
By a variant thereof, thesecond flat rear surface has an opening formed therein, and the flue extends upwardly through such openlng.
By a further aspect of this invention, the stove includes a rear wall having an opening formed therein, and the flue extends rearwardly through such openlng.
Thus, by aspects of the instant invention, stoves or fireplaces are provided which involve the combination of an arcuate portion of the cooklng surface, which defines the upper part of the fire chamber, and a cylindrical flue disposed within the fire chamber and having an open for-ward end located at the midpoint of the radius of the arcuate portion. The position of the flue relative to the arcuate portion permits the burning particles of fuel to be held in suspension within the fire chamber, thus allowing for substantially complete combustion and substantially eliminating the loss of fuel particles and heat up the chimney.
In the accompanying drawings, Figure 1 is a perspective view of a stove according to an aspect of this invention showing a cooking surface including an arcuate portion extending forwardly and downwardly from a horizontal top portion;
Figure 2 is a top plan view of the stove showing the side walls and flue in dotted lines;
Figure 3 is a front elevational view of the stove taken along line 3-3 of Figure 2;
~h~ '7' Fig. 4 is a sectional view taken along line 4-4 of Fig. 2 showing the relationship of the end of the flue to the arcuate portion of the cooking surface; _ Fig. 5 is a sectional view taken along line 5-5 of Fig. 3 showing the sealing overlap of the doors; .
Fig. 6 is a sectional view taken along line 6-6 of Fig. 3 showing the draft cap; and Fig. 7 is a sectional view taken along line 7-7 of Fig. 4 showing the level adjusting nut of the legs.
Returning ncw to the drawings, wherein like reference numerals designate identical or corresponding p æ ts throughout the several views, Fig. 1 shcws a stove or fireplace 10 including a cooking surface 11 which defines the upper part of the fire chamber or fire box 12 ~Fig. 4). m e cooking surface 11 includes a horizontally disposed top portion 13, an arcuate portion 14 extending forwardly and downwardly from the forward end of the top portion 13, and a horizontally disposed lower portion 15 ex-tending forwardly from the lower end of the arcuate portion 14. r As shown in Fig. 4, the fire chamber 12 is defined by the doors 16, bottom 17, and sidewalls 18, together with surface 11. The fire chamber 12 is lined with fire brick 19 at the bottom, rear and sides; and the upper ends of the fire brick 19 are held secure to the sidewalls 18 by angle 20.
The stove or fireplace 10 is supported by a plurality of legs 21 which in-clude a level adjusting nut 22 (Fig. 7). An ash apron 23 extends forwardly of sidewall 18 below the doors 16.
As shown mDst clearly in Figs. 3-6, the doors 16 are hingedly attached to the front sidewall 18 by hinges 24. When in the closed posi-tion, the doors 16 overlap at 25 (Fig. 5) and substantially seal the fire chamber 12 from the atmosphere. It is understood that when a single door 16 is used, ratller than the double doors 16 shown in the drawings, the free end of the door 16 will seal against sidewall 18. Dcor h3ndles 26 are r-~Ll'~6;7 rotatably mounted on the doors 16 and ~Iclude an internally disposed latch 27 adapted to engage the lip 28 (Fig. 4~ of front sidewall 18 to hold the doors 16 in the closed position. A two-piece draft cap 29 (Fig. 6) is attached to the d`oors 16 and a threadably mounted cover 30 is rotated to increase or decrease the flow of air into the fire chamber 12 and regulate the burning of the fuel.
As best shown in Figs. 2 and 4, the flue 31 extends through an ,_ opening in the top portion 13 of the cooking surface 11 and is attached thereto by weld~ent or the like. It is understood that the flue 31 could likewise extend directly rearward through the rear sidewall 18 if such an arrangement is desired. A portion of the flue 31 extends parallel to the top portion 13 within the fire chamber 12 and the forward open end 32 of the flue 31 terminates at the midpoint of the radius r of the arcuate portion 14. The arcuate portion 14 and the arrangement of the open end 32 of the flue 31 with respect to the arcuate p~rtion 14 is critical to the efficient operation of the stove or fireplace 10.
In operation, a supply of wood or other suitable fuel is placed in the fire c'la~ber 12 and ignited. The doors 16 are then closed and the draft is controlled by adjusbment of the draft caps 29. The fire chamber 12, and specifically the arcuate portion 14 and flue end 32, are so designed and arranged to hold the burning particles of fuel in suspension inside the fire chamber 12 for an extended period of time. This allows for substanti-ally complete combustion of the fuel and minimizes the loss of fuel parti-cles and heat up the chimney. Further, the efficient combustion results in lesser ash accumulation within the fire chamber 12. The flame cradles around the extended flue 31 and creates a vortex effect which increases the turbulence of the hot combustion gases, holds the heat in the fire chamber 12 longer, burns the fuel thoroughly and efficiently, and gives off an even supply of heat over an extended period of time. To extinguish the fire, the ;7 draft caps 29 are simply closed to cut off the flow of air and the fire will extinguish in a matter of minutes.
Thus, it can be seen that a novel flue arrangem~nt for a stove or fireplace has-been provided.
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Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A stove having a pair of side walls, a bottom, a rear wall, a front wall, and an upper cooking surface defining therein a fire chamber, the improvement wherein the cooking sur-face includes a first flat front surface, a second flat rear sur-face defining a plane parallel to, but higher than, the plane of said first surface, and an arcuate surface interconnecting said first and second surfaces, said arcuate surface defining a ninety degree (90°) arc; and further including a cylindrical flue attached to said stove and extending within the fire chamber forwardly parallel to, and below, said second flat rear surface, and rearwardly of said arcuate surface, said flue having a for-ward open end terminating within said fire chamber at the midpoint of the radius of said arcuate surface.
2. The stove of claim 1 wherein said second flat rear surface has an opening formed therein; and wherein said flue extends upwardly through said opening.
3. The stove of claim 1 further including a rear wall having an opening formed therein; and wherein said flue extends rearwardly through said opening.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85723277A | 1977-12-05 | 1977-12-05 | |
| US857,232 | 1977-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1112967A true CA1112967A (en) | 1981-11-24 |
Family
ID=25325522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA302,559A Expired CA1112967A (en) | 1977-12-05 | 1978-05-03 | Flue arrangement for stove and fireplace |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1112967A (en) |
-
1978
- 1978-05-03 CA CA302,559A patent/CA1112967A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |