CA1201373A - Blue flame burner for liquid fuels - Google Patents
Blue flame burner for liquid fuelsInfo
- Publication number
- CA1201373A CA1201373A CA000401140A CA401140A CA1201373A CA 1201373 A CA1201373 A CA 1201373A CA 000401140 A CA000401140 A CA 000401140A CA 401140 A CA401140 A CA 401140A CA 1201373 A CA1201373 A CA 1201373A
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- burner according
- heating chamber
- combustion chamber
- combustion
- 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
Abstract
"BLUE FLAME BURNER FOR LIQUID FUELS"
ABSTRACT OF THE DISCLOSURE
The burner comprises an externally cooled combustion chamber, a pre-heating chamber for the combustion air from an air-ressurizing blower, a neck provided with a calibrated bushing through which the pre-heating chamber is communicated to the combustion chamber. Both the pre-heating chamber and combustion chamber are formed within a tubular body having a nosepiece at one end which is adapted to delimit the combustion chamber, and a cap at the other end which is effective to delimit the pre-heating chamber. The end cap has a lug extending inside the pre-heating chamber in cantilever relationship therewith and being adapted to support, in cantilever-relationship within the bushing, an atomizing injector device.
ABSTRACT OF THE DISCLOSURE
The burner comprises an externally cooled combustion chamber, a pre-heating chamber for the combustion air from an air-ressurizing blower, a neck provided with a calibrated bushing through which the pre-heating chamber is communicated to the combustion chamber. Both the pre-heating chamber and combustion chamber are formed within a tubular body having a nosepiece at one end which is adapted to delimit the combustion chamber, and a cap at the other end which is effective to delimit the pre-heating chamber. The end cap has a lug extending inside the pre-heating chamber in cantilever relationship therewith and being adapted to support, in cantilever-relationship within the bushing, an atomizing injector device.
Description
~Z~37~ .
This invention relates to a blue fl~me burner for liquid fuels.
l~no~n in the art a.re blue ~ e burners for l~cluid uels ~hich, while being much more efficient th~n traditional white fl~me ~rners, require the provi~ion of two discrete combustion air feed paths to the burner combustion chamber. The two paths are conventionally designated primary air path and secondary ~ir path~ respectively. The provision of such dual path involves, in addition to designing and construction problems, also the solution of complex problems connected with the volume and ~elocity metering of the air flo~n therethrough, as well as of mutual correlation and interdependence.
Thus the task of this invention is to provide a bl~e fl~ne burner ~or liquid fuels which, additionally to substantially removing the cited problems and shortcomings affecting prior burners, can afford a definitely superior performance level.
Within this task it is an object of the invention to provide a burner as 1~ oat~t, ~hich affords,to all prac-tical e~ects, a compl~te combu~tio~, leaving no unbu~ned portions of the fuel, by ensuring that the combustion can ta~e place in a stoichiometric ratio o~ fuel ~o com-bustion air, or a ratio very close to the theoretical stoichiometric values. This means that the excess air flowing through the burner is nil or close to ~ero, for a higher thermal effici0ncy of the kurner~
~k ~2(3~L373 A ~urther object of this invention is to provide a burner as indicated, which has a very simple construction, comprises a minimum of components, can be readily and conveniently assembled and disassembled, and can be manufactured at a highly competitive cost.
These and other objec~s, such as will be apparent hereinafter~ are achieved by a blue ~lame burner for liquid fuel~, characterized in that it comprises an externally cooled com~lstion chamber, a pre-heating chamber for combustion air from a source of pressurized air, a calibrated neck wherethrough said pre-heating cha~ber is com~nicated to said combustion chamber, an atomizing injector cantilever mounted inside said calibrated neck and being adapted to scatter atomized f~el toward said combustion chamber, and a pressurized ~uel intake conduit arranged within said air pre-heating chamber in heat exchange relationship therewith ~nd being connected to a source of pressurized ~uel.
Further aspects and advantages will become apparent a~ter considering the following detailed description of a preferred embodiment of this invention, given herein by way of example and not .
of limitation, in conjunction with the accompanying illustrative drawings, where:
Figure 1 is a schematic view~ in elevation and longitudinal section, of a burner according to the invention;
~2(~373 Figure 2 is a schematic elevation view of the ~urner of Fi~ure 1, as placed at the inlet end of a refractory material lined chamber; and Figure 3 is a C02 vsO 2 percent ~raph.
With re~erence to Figures 1 and 2, where similar parts have been designated with the same reference numerals, this burner 1 has an elongate hollow boay ~, a calibrated nosepiece 3 removably attached to one end of the hollow body 2, and an end cap 4, removably attached to the other end of the hollow body. The latter is ~ormed, at an intermediate region thereof~ wlth an annular increased-thickness portion~ whereat a restriction or neck 5 is defined internally. The annular thickened portion in the hollow body 4 acts as a partition member separating two internal cavities in the body 4, namely a front cavity 6 and rear cavity 7. The front cavity 6 is, thus~ delimited on the front by the nosepiece 3 and constitutes the burner combustion ehamber~ ~hich is cooled externally by a fluid circulated at 6a~ while the rear cavity 7 is closed by the end cap 4 and constitutes a combustion air pre-heating chamber, as will be explained hereinafter. The chambers 6 and 7, and the neck 5~ are all aligned together ~long the longitudinal axis x-x.
At the neck 5, there is arranged, in a removable manner, a bushing 8, which abuts externally and peripherally against the inner wall of the neck 5 and has an inner bore 9 convergent toward its calibrated end 10 facing the chamber 6.
The end cap 4~ and accordingly the chamber 7, is comn~nicated9 throu~h a hole 11 formed throu~h a lug 12 whereto is secured one end of a preferably flexible hose line 13, to the delivery end of a blower or compres~or 15 of the two-s-tage type which is arranged to deliver pressurized air into the chamber 7. ~hrough the end cap 4, a hole 16 is al~o formed which extends coaxial with the axis x-x, and is connected to a a pressurized liquid ~uel (e.g. Diesel oil) supply conduit 17. I~ore speci~ically, the hole 16 is formed through an inside lug 18 which,from the rear wall of the end cap ~ extends in cantilever relationship along the axis x-x over the entire length of the end cap.
At the free end of the lug 18~ there is secured one end of a conduit or line 19, which enters the bushing 8 cantilever-fashion. The free 6nd of the conduit 1g accommodates, mounted therein, an atomizing inaector device 20~ which barely clears with its spray noæ~le 21 the calibrated end 10 of the bushing 8.
On that section of the line 19 which e~tends outside of the bu.s~;ng 8~ there is slidably mountedg and adjustably fastened, a disk ~r diaphragm 22 which fu~ctions as a restrictor elenent for the air coming ~rom the passage 11 and directed to the com~ustion cham~er.
~ aterally to the restriction 57 at the thickened region o~ the hollow body 29 there are formed holes intended to accommodate flame ignition and control 3 metal el~ctrodes 24, which protrude into the 3~3 combustion chamber 6.
The pressurized fuel 3upply line 17 is in turn connected, with the interposition of a control solenoid val~e 25, to a suitable fuel pump 26.
At the intake mouth 27 of the blower 15, a conduit 28 is provided which can be shut off by means of a movable shutter 29 driven by a solenoid valve 30.
Upstream of the shutter 29 is located a metering device 31 arranged to control the flow rate of the combustion air directed to the burner.
Preferably, the metering device 31 can be adjusted by means of a micrometric adjustment pin screw.
The burner described hereinabove operates in a very simple manner. After starting the blower 15 and actuating the pump 26, the shutter 29 will be in its air shut~off position; however~ thanks to a central hole 32 provided thereîn, a sufficient amount of air can still be admitted to the combustion chamber 6 to cause ignition. Once the fuel has been so ignited, the solenoid valve 30 ~ill be controlled, by an electronic control unit not shown in the drawings, to open9 so - that pre~surized combustion air can be delivered into the chamber 7 at a pressure and volume consistent with the amount of fuel issueing from the atomizing injector 20, and in all cases in stoichiometric proportion for burning the particular fuel being used.
In operation~ the hollow body 2 will be heated at the combustion chamber 3, and transfer part o~ its heat by conduction to both the air within the chamber 7 and fuel flowing through the lug 18. ~y con~ection, the air contained in the chamber 7 will in turn aasist in the transfer of heat ~rom the inner walls of the ch~nber 7 to the condui-t 19, thereby the oncoming ~uel to the atomizing injector device 20 is adequately pre-heated.
Irhe air contained in the chamber 7 initially undergoes expclnsion in flowing from the hole 11 to that portion of the chamber 7 ~vhich is located upstream o~ the diaphragm 22~ rrhe diaphragm 22 will ins~ead force ~he air to flow peripherally past it and then sweep the inner wall of the tubular body 2, thereby its velocity is increased. Between the diaphragm 22 and ~ shing B, the air is subjected to further expansion, and by virtue of the bushing 8 being conflgured to protrude in part, cæ~tilever-~ashion, toward the interior of the chc~mber 7 from the restriction or neck 5~ it undergoes a mixing and thermal stabilization process prior to flowing through the bore 9 in the bushing 8. Through the bore 9, the air is uniformly distributed along and around the atomizing injector device 20, and upon reaching the calibrated end 10 of the bushing 8, it is directed concentrically toward the interior of the chamber 9 t to encircle the jet(s) of atomized fuel issueing from the nozzle 21. It is important that the atomiæed ~uel spray be focussed on the area of highest turbulence of the combustion air being fed into the combustion chamber.
~ith burners constructed as described hereinabo~e and operating as herein detailed, efficiency rate have been achieved on a regular basis which equal or exceed 99 percent~ as against maximum rated efficiencies of 8~-85 percent of comparable white flame burner6 of conventional design and construction.
r~ioreover, besides the very high thermal efficiency afforded by a burner according to this invention, several other advantages can be secured, among which:
- complete combustion of the fuel with total absence of unburned residue;
- high temperature of the resulting flame emerging from the combustion chamber 6;
- issue of polluting gases in negligible amounts; and - very low maintenance costs, largely on account of the absence of unburned products.
Tests have been carried out on a burner as described above~ having its nosepiece 3 located at the inlet end of a chamber 33 lined ~ith tiles 34 of a refractory material, as shown in Figure ~ The refractory material l;ning~ upon becoming red-hot~
will isRue light in the white-red bands with a high emissivity. ~hus, inside the chamber 33 temperatures in excess of 1,500C are to be achieved within few minutes (3 to 5 minutes) from burner ignition.
~ith a burner 1 and chamber 33 as shown in ~igure 2, but associated with a small-size boiler (having outside dimensions of 45 x 88 x 58 cm) surrounded by a water jacket, actual tests have provided the following values:
~urnace output 1 19000 Kcal/hour ~L2~137;~
Useful thermal efficiency ~5a,~
~lue gas temperature 176C
~xcess air 1.3 Smoke emission rate (Bach. app.) 0.0 C2 emission 14.5 CO emission .01~
As may be appreciated from the graph of Figure 3 (Ostwald triangle)~ ~or a content of carbon dioxide of 14 5 percent, there only occurs a both theoretical and practical excess of air of 1.3. Loreover, the virtual absence of carbon monoxide from the combustion products along wi~h the higll percentage of carbon dioxide is a sure indication7 to all practical effects, of all the fuel being ~urned completely~
15Actual tests have also sho~n that the sizing of this burner to meet varying power recluirements in diferent applications will depend o~ the varying and mutual correlation of but a few structural elements.
~hese are the inlet port size of the metering device 31 (T), the port size (~) of the calibrated end 10 of the nozzle 8~ the maximum inside diameter (C) of the combustion chamber, the length (~ of the combustion chamber, and the diameter ~B) of the nosepiece 3.
The following exemplary correlations of the a~ove-specified values T~U,~,~ and B have shown to be advantageous in practicing the invention:
Kcal/hour ~ (mm) U (mm) C (mm) ~ (mm) B ~mm) 10,000 34 17 65 192 22 30~0~000 10 20 65 162 32 50,000 16 19 65 212 42 ~2~3~373 100,000 34 18 85 263- 55 r~he above-tabulated results relate to a fuel delivery pressure of 18 kg/cm .
rrhe invention as described is susceptible to many modi~ications and variations without departing from the scope c~nd spirit of the instant inventive concept.
The materials and dimensions used may vary to suit -lndividual applicational re~uirements.
This invention relates to a blue fl~me burner for liquid fuels.
l~no~n in the art a.re blue ~ e burners for l~cluid uels ~hich, while being much more efficient th~n traditional white fl~me ~rners, require the provi~ion of two discrete combustion air feed paths to the burner combustion chamber. The two paths are conventionally designated primary air path and secondary ~ir path~ respectively. The provision of such dual path involves, in addition to designing and construction problems, also the solution of complex problems connected with the volume and ~elocity metering of the air flo~n therethrough, as well as of mutual correlation and interdependence.
Thus the task of this invention is to provide a bl~e fl~ne burner ~or liquid fuels which, additionally to substantially removing the cited problems and shortcomings affecting prior burners, can afford a definitely superior performance level.
Within this task it is an object of the invention to provide a burner as 1~ oat~t, ~hich affords,to all prac-tical e~ects, a compl~te combu~tio~, leaving no unbu~ned portions of the fuel, by ensuring that the combustion can ta~e place in a stoichiometric ratio o~ fuel ~o com-bustion air, or a ratio very close to the theoretical stoichiometric values. This means that the excess air flowing through the burner is nil or close to ~ero, for a higher thermal effici0ncy of the kurner~
~k ~2(3~L373 A ~urther object of this invention is to provide a burner as indicated, which has a very simple construction, comprises a minimum of components, can be readily and conveniently assembled and disassembled, and can be manufactured at a highly competitive cost.
These and other objec~s, such as will be apparent hereinafter~ are achieved by a blue ~lame burner for liquid fuel~, characterized in that it comprises an externally cooled com~lstion chamber, a pre-heating chamber for combustion air from a source of pressurized air, a calibrated neck wherethrough said pre-heating cha~ber is com~nicated to said combustion chamber, an atomizing injector cantilever mounted inside said calibrated neck and being adapted to scatter atomized f~el toward said combustion chamber, and a pressurized ~uel intake conduit arranged within said air pre-heating chamber in heat exchange relationship therewith ~nd being connected to a source of pressurized ~uel.
Further aspects and advantages will become apparent a~ter considering the following detailed description of a preferred embodiment of this invention, given herein by way of example and not .
of limitation, in conjunction with the accompanying illustrative drawings, where:
Figure 1 is a schematic view~ in elevation and longitudinal section, of a burner according to the invention;
~2(~373 Figure 2 is a schematic elevation view of the ~urner of Fi~ure 1, as placed at the inlet end of a refractory material lined chamber; and Figure 3 is a C02 vsO 2 percent ~raph.
With re~erence to Figures 1 and 2, where similar parts have been designated with the same reference numerals, this burner 1 has an elongate hollow boay ~, a calibrated nosepiece 3 removably attached to one end of the hollow body 2, and an end cap 4, removably attached to the other end of the hollow body. The latter is ~ormed, at an intermediate region thereof~ wlth an annular increased-thickness portion~ whereat a restriction or neck 5 is defined internally. The annular thickened portion in the hollow body 4 acts as a partition member separating two internal cavities in the body 4, namely a front cavity 6 and rear cavity 7. The front cavity 6 is, thus~ delimited on the front by the nosepiece 3 and constitutes the burner combustion ehamber~ ~hich is cooled externally by a fluid circulated at 6a~ while the rear cavity 7 is closed by the end cap 4 and constitutes a combustion air pre-heating chamber, as will be explained hereinafter. The chambers 6 and 7, and the neck 5~ are all aligned together ~long the longitudinal axis x-x.
At the neck 5, there is arranged, in a removable manner, a bushing 8, which abuts externally and peripherally against the inner wall of the neck 5 and has an inner bore 9 convergent toward its calibrated end 10 facing the chamber 6.
The end cap 4~ and accordingly the chamber 7, is comn~nicated9 throu~h a hole 11 formed throu~h a lug 12 whereto is secured one end of a preferably flexible hose line 13, to the delivery end of a blower or compres~or 15 of the two-s-tage type which is arranged to deliver pressurized air into the chamber 7. ~hrough the end cap 4, a hole 16 is al~o formed which extends coaxial with the axis x-x, and is connected to a a pressurized liquid ~uel (e.g. Diesel oil) supply conduit 17. I~ore speci~ically, the hole 16 is formed through an inside lug 18 which,from the rear wall of the end cap ~ extends in cantilever relationship along the axis x-x over the entire length of the end cap.
At the free end of the lug 18~ there is secured one end of a conduit or line 19, which enters the bushing 8 cantilever-fashion. The free 6nd of the conduit 1g accommodates, mounted therein, an atomizing inaector device 20~ which barely clears with its spray noæ~le 21 the calibrated end 10 of the bushing 8.
On that section of the line 19 which e~tends outside of the bu.s~;ng 8~ there is slidably mountedg and adjustably fastened, a disk ~r diaphragm 22 which fu~ctions as a restrictor elenent for the air coming ~rom the passage 11 and directed to the com~ustion cham~er.
~ aterally to the restriction 57 at the thickened region o~ the hollow body 29 there are formed holes intended to accommodate flame ignition and control 3 metal el~ctrodes 24, which protrude into the 3~3 combustion chamber 6.
The pressurized fuel 3upply line 17 is in turn connected, with the interposition of a control solenoid val~e 25, to a suitable fuel pump 26.
At the intake mouth 27 of the blower 15, a conduit 28 is provided which can be shut off by means of a movable shutter 29 driven by a solenoid valve 30.
Upstream of the shutter 29 is located a metering device 31 arranged to control the flow rate of the combustion air directed to the burner.
Preferably, the metering device 31 can be adjusted by means of a micrometric adjustment pin screw.
The burner described hereinabove operates in a very simple manner. After starting the blower 15 and actuating the pump 26, the shutter 29 will be in its air shut~off position; however~ thanks to a central hole 32 provided thereîn, a sufficient amount of air can still be admitted to the combustion chamber 6 to cause ignition. Once the fuel has been so ignited, the solenoid valve 30 ~ill be controlled, by an electronic control unit not shown in the drawings, to open9 so - that pre~surized combustion air can be delivered into the chamber 7 at a pressure and volume consistent with the amount of fuel issueing from the atomizing injector 20, and in all cases in stoichiometric proportion for burning the particular fuel being used.
In operation~ the hollow body 2 will be heated at the combustion chamber 3, and transfer part o~ its heat by conduction to both the air within the chamber 7 and fuel flowing through the lug 18. ~y con~ection, the air contained in the chamber 7 will in turn aasist in the transfer of heat ~rom the inner walls of the ch~nber 7 to the condui-t 19, thereby the oncoming ~uel to the atomizing injector device 20 is adequately pre-heated.
Irhe air contained in the chamber 7 initially undergoes expclnsion in flowing from the hole 11 to that portion of the chamber 7 ~vhich is located upstream o~ the diaphragm 22~ rrhe diaphragm 22 will ins~ead force ~he air to flow peripherally past it and then sweep the inner wall of the tubular body 2, thereby its velocity is increased. Between the diaphragm 22 and ~ shing B, the air is subjected to further expansion, and by virtue of the bushing 8 being conflgured to protrude in part, cæ~tilever-~ashion, toward the interior of the chc~mber 7 from the restriction or neck 5~ it undergoes a mixing and thermal stabilization process prior to flowing through the bore 9 in the bushing 8. Through the bore 9, the air is uniformly distributed along and around the atomizing injector device 20, and upon reaching the calibrated end 10 of the bushing 8, it is directed concentrically toward the interior of the chamber 9 t to encircle the jet(s) of atomized fuel issueing from the nozzle 21. It is important that the atomiæed ~uel spray be focussed on the area of highest turbulence of the combustion air being fed into the combustion chamber.
~ith burners constructed as described hereinabo~e and operating as herein detailed, efficiency rate have been achieved on a regular basis which equal or exceed 99 percent~ as against maximum rated efficiencies of 8~-85 percent of comparable white flame burner6 of conventional design and construction.
r~ioreover, besides the very high thermal efficiency afforded by a burner according to this invention, several other advantages can be secured, among which:
- complete combustion of the fuel with total absence of unburned residue;
- high temperature of the resulting flame emerging from the combustion chamber 6;
- issue of polluting gases in negligible amounts; and - very low maintenance costs, largely on account of the absence of unburned products.
Tests have been carried out on a burner as described above~ having its nosepiece 3 located at the inlet end of a chamber 33 lined ~ith tiles 34 of a refractory material, as shown in Figure ~ The refractory material l;ning~ upon becoming red-hot~
will isRue light in the white-red bands with a high emissivity. ~hus, inside the chamber 33 temperatures in excess of 1,500C are to be achieved within few minutes (3 to 5 minutes) from burner ignition.
~ith a burner 1 and chamber 33 as shown in ~igure 2, but associated with a small-size boiler (having outside dimensions of 45 x 88 x 58 cm) surrounded by a water jacket, actual tests have provided the following values:
~urnace output 1 19000 Kcal/hour ~L2~137;~
Useful thermal efficiency ~5a,~
~lue gas temperature 176C
~xcess air 1.3 Smoke emission rate (Bach. app.) 0.0 C2 emission 14.5 CO emission .01~
As may be appreciated from the graph of Figure 3 (Ostwald triangle)~ ~or a content of carbon dioxide of 14 5 percent, there only occurs a both theoretical and practical excess of air of 1.3. Loreover, the virtual absence of carbon monoxide from the combustion products along wi~h the higll percentage of carbon dioxide is a sure indication7 to all practical effects, of all the fuel being ~urned completely~
15Actual tests have also sho~n that the sizing of this burner to meet varying power recluirements in diferent applications will depend o~ the varying and mutual correlation of but a few structural elements.
~hese are the inlet port size of the metering device 31 (T), the port size (~) of the calibrated end 10 of the nozzle 8~ the maximum inside diameter (C) of the combustion chamber, the length (~ of the combustion chamber, and the diameter ~B) of the nosepiece 3.
The following exemplary correlations of the a~ove-specified values T~U,~,~ and B have shown to be advantageous in practicing the invention:
Kcal/hour ~ (mm) U (mm) C (mm) ~ (mm) B ~mm) 10,000 34 17 65 192 22 30~0~000 10 20 65 162 32 50,000 16 19 65 212 42 ~2~3~373 100,000 34 18 85 263- 55 r~he above-tabulated results relate to a fuel delivery pressure of 18 kg/cm .
rrhe invention as described is susceptible to many modi~ications and variations without departing from the scope c~nd spirit of the instant inventive concept.
The materials and dimensions used may vary to suit -lndividual applicational re~uirements.
Claims (9)
PROPERTY OR PRIVILEGES IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A blue flame burner for liquid fuels, charac-terized in that it comprises an externally cooled com-bustion chamber, a pre-heating chamber for combustion air from a source of pressurized air, a calibrated neck where-through said pre-heating chamber is communicated to said combustion chamber, an atomizing injector cantilever mount-ed inside said calibrated neck and being adapted to scatter atomized fuel toward said combustion chamber, and a pressurized fuel intake conduit arranged within said air pre-heating chamber in heat exchange relationship therewith and being connected to a source of pressurized fuel.
2. A burner according to Claim 1, characterized in that said neck accommodates a calibrated passage bushing adjacent said combustion chamber.
3. A burner according to Claim 1, characterized in that said combustion and pre-heating chambers are formed within an internally restricted hollow body closed at one end by a calibrated nosepiece adapted to confine said combustion chamber, and at the other end by an end cap adapted to confine said pre-heating chamber.
4. A burner according to Claim 3, characterized in that said end cap has a bored lug connected to said pressurized fuel supply source and adapted to feed and cantilever carry said atomizing injector.
5. A burner according to Claim 4, characterized in that said combustion chamber, calibrated restriction or neck, pre-heating chamber, and end cap bored lug are all aligned together along a common axis.
6. A burner according to Claim 1, characterized in that it further comprises a velocity regulator for the airflow entering said pre-heating chamber.
7. A burner according to Claim 6, characterized in that said regulator comprises a disk-like diaphragm the position whereof is adjustable.
8. A burner according to Claim 1, characterized in that said pressurized air source includes a two-stage blower comprising a metering-shutter device located at the intake end thereof.
9. A burner according to Claim 8, characterized in that said shutter device is controlled by means of a solenoid valve, while said metering device includes a micrometric adjustment pin screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000401140A CA1201373A (en) | 1982-04-16 | 1982-04-16 | Blue flame burner for liquid fuels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000401140A CA1201373A (en) | 1982-04-16 | 1982-04-16 | Blue flame burner for liquid fuels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1201373A true CA1201373A (en) | 1986-03-04 |
Family
ID=4122594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000401140A Expired CA1201373A (en) | 1982-04-16 | 1982-04-16 | Blue flame burner for liquid fuels |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1201373A (en) |
-
1982
- 1982-04-16 CA CA000401140A patent/CA1201373A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |