CN201170583Y - Gasification return air furnace for firewood - Google Patents
Gasification return air furnace for firewood Download PDFInfo
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- CN201170583Y CN201170583Y CNU2008200620860U CN200820062086U CN201170583Y CN 201170583 Y CN201170583 Y CN 201170583Y CN U2008200620860 U CNU2008200620860 U CN U2008200620860U CN 200820062086 U CN200820062086 U CN 200820062086U CN 201170583 Y CN201170583 Y CN 201170583Y
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Abstract
The utility model relates to a firewood gasification air-return stove, which comprises a shell, a stove core and a stove panel, and is characterized in that the stove also comprises a separation ring, wherein, the separation ring divides an annular hollow cavity that is arranged between the shell and the stove core into an upper annular air-return cavity and a lower annular second air supply cavity; the annular second air supply cavity is provided with a ventilating port; the circumferential wall at the upper part of the stove core is provided with a plurality of second air inlet holes; a stove bridge is arranged at the lower side inside the stove core; the lower end of the stove core is provided with an inlet-air volume adjusting device. The stove of the utility model is characterized in that the second air inlet holes are two to six circles of circular holes that are uniformly distributed in annular shape. The stove has simple structure and low cost, and has the advantages of the ordinary air-return stove and the firewood gasification stove; when the ventilating port is closed, the stove can be used as an ordinary air-return stove combusting the coal; the second combustion adopts the natural ventilating way, so that no blower is required to supply the air compulsorily; the stove is particularly applicable to the popularization in the rural families, since the fuel of the stove is diversity, and the heating efficiency is high, and the stove can save 70 percent of the firewood compared with the conventional firewood stove.
Description
Technical field
The utility model relates to a kind of air return stove structure, especially improvement of its combustion chamber structure of making fuel with faggot.
Background technology
The firewood gasification furnace of prior art, be to adopt imperfect combustion mode preliminary treatment faggot, make it produce burning mixture, again it is imported fire door and carry out the second-time burning heat supply, as number being 02213624.x, 02222750.4,02291929.5 Chinese patent, dispose structures such as air blast, clarifier mostly, equipment such as the pulverizer that also need dispose preliminary treatment fuel that has, cuber, its complex structure, use cost height, operation inconvenience is unsuitable for especially rural households' use of family.Traditional air return stove is to make fuel with coal, energy-saving effect is remarkable, there is bavin not have coal for satisfying the mountain area people, wish to occur a kind of hope of making the air return stove of fuel with bavin, the inventor had once invented multinomial combustion bavin air return stove product, as number being 02223070.x, 200420060330.1,200620033079.9 Chinese patent, had designed special-purpose wood stove core, and it is done repeatedly to improve, but also desirable not to the utmost aspect the smokeless effect of enhancement and the raising thermal efficiency.Product with firewood gasification furnace and air return stove combination does not also appear in the market.
The utility model content
Problem to be solved in the utility model is to provide a kind of faggot gasification air return stove, and it is simple in structure, and production cost is low, does not need the air blast forced air inlet, and thermal efficiency height especially is suitable for rural households and promotes the use of.
The utility model adopts following technical scheme: comprise furnace shell, combustion chamber and furnace panel, described furnace panel is provided with the ring seat that is used to put cooker, it is characterized in that: also comprise a stripper loop, described stripper loop is separated into the annular return air chamber on top and the annular secondary air feed chamber of bottom with the toroidal cavity between furnace shell and the combustion chamber, described annular secondary air feed chamber is provided with ventilating opening, the wall of described combustion chamber top periphery is provided with several secondary air holes, the downside of described combustion chamber inside is provided with grate, and described combustion chamber lower end is provided with the intake adjusting device.Its theory of combustion and operation sequence are as follows: at first from the combustion chamber faggot of inserting suitable for reading, the faggot amount is no more than the height that is provided with of the secondary air hole be located on the furnace core wall, from the combustion chamber faggot of lighting suitable for reading, the combustion chamber lower end mixes up first intake simultaneously, the burning of faggot backfire formula from the top down, faggot is by dry, destructive distillation, processes such as oxidation generate the air mixture of flue gas state in the imperfect combustion mode, combustion chamber is installed on the base, stripper loop is separated into airproof two spaces up and down with the toroidal cavity between furnace shell and the combustion chamber, the annular secondary air feed chamber of bottom is provided with and the extraneous ventilating opening that communicates, spray into combustion chamber inside from the secondary air hole under the draft effect of air in combustion chamber in the annular secondary air feed chamber, the air that sprays into mixes combustion at each hole place and air mixture, form several strong and powerful columns of flame, several columns of flame that annular spread inwardly sprays into make progress ascension from combustion chamber ejection suitable for reading, form smokeless flames.Opening stove cover plate can heat up water and cook; The flame that rises when covering stove cover plate is obstructed into the horn-like annular tempering cavity that goes down after a rise between furnace shell and combustion chamber, and a large amount of heat energy are by the furnace shell absorption and slowly to indoor release, and are warm indoor, realizes the purpose of heating, and waste gas is discharged outdoor from the body of heater flue.The a part of heat energy of the cavity of tempering simultaneously and a part of heat energy in the combustion chamber reach annular secondary air feed chamber, quickened atmosphere temperature rising and upwards mobile, air sprays into the combustion zone of combustion chamber inside from the secondary air hole, because oxygen supply abundance, its combustion efficiency is good, has given full play to the energy-conserving action of air return stove.Can regulate first intake from the combustion chamber lower end as required, thereby regulate the firepower size.The utility model is the main contribution of prior art: the structure Design of cellular-type up and down of the toroidal cavity between combustion chamber and the furnace shell (comprising annular return air chamber and annular secondary air feed chamber), and the secondary intake opening that will be located at the fire door place is displaced downwardly to the design of combustion chamber upper area, the combustion chamber upper area becomes the combustion zone, after the fire door place secondary intake opening expansion among a small circle of the design with prior art, become the air feed district of combustion chamber upper area, its oxygen supply abundance, realized the automatic air feed function of second-time burning, the part that fuel is put in the combustion chamber bottom is inferior combustion zone, the high temperature of combustion zone has strengthened the destructive distillation effect of inferior combustion zone fuel, the air mixture that destructive distillation produces rises to the combustion zone and fully burns, and reaches the effect of smokeless combustion.
A kind of improvement is that described secondary air hole is the annular equally distributed circular holes of 2 to 6 circles.Find by inventor's test of many times, the secondary air hole is set to the uniform circular hole the best of 2 to 6 circles, these circular holes are divided into 2 to 6 layers from the bottom to top with the combustion zone, each circular hole promptly is a burning duration and degree of heating, several duration and degree of heatings form the combustion front of ascension on 2 to 6 courses, guarantee the abundant burning of air mixture like this, reached the effect of smokeless combustion basically.
The another kind of improvement is to comprise that also being located at going up of combustion chamber upper end encircles cover, and the described cover body of going up the ring cover extends upward, and is provided with the gap between the ring port of described upward ring cover and the lower edge of described ring seat.Last ring cover has stoped hot-air directly to enter flue, and bootable hot-air is given full play to the energy-conserving action of air return stove by the return air chamber circulation of above-mentioned gap between combustion chamber and furnace shell.
The third improvement is the described structure that ring covers into toroidal that goes up.The ring of going up of this structure is covered with the effect of gathering firepower, and return air is effective.
The 4th kind of improvement is the structure that described stripper loop becomes toroidal.This frame mode is simple, and along being connected with combustion chamber is suitable for reading, its outer is connected with the inwall middle part of furnace shell in it, only needs that the toroidal cavity between furnace shell and the combustion chamber is separated into airproof two spaces up and down and gets final product.
The 5th kind of improvement is that described ventilating opening is located at the sidewall of furnace shell or the lower end in annular secondary air feed chamber.The sidewall that ventilating opening is located at furnace shell is convenient to make, and also is convenient to regulate operation.
The 6th kind of improvement is that described stripper loop and last ring cover are integral the formula structure.This frame mode is simple, manufacturing, easy for installation.
Also have a kind of improvement to be, comprise that also being located at being used between furnace shell side upper wall and the combustion chamber adds the passage of fuel and the fire door that matches.
Improvement again is that described intake adjusting device is board plug type structure or turnover plate type structure.Adjust the size (or inclination angle of adjustment turnover panel) of the air inlet of the inboard termination of plate and can adjust intake, thus the control firepower; Firmly push-and-pull plate (or upset turnover panel) has dusting function concurrently back and forth.
Employing the utlity model has following advantage:
1, the utility model combines the advantage of air return stove and firewood gasification furnace, and it is simple in structure, and is cheap, do not need the air blast forced air inlet, the air intake mode of second-time burning adopts the natural air inlet mode, does not need, it is wide to adapt to the area, be suitable for family especially rural households promote the use of.
2, fuel source is extensive, and stalk, faggot, branches and leaves, wood chip, thick bavin, wet bavin, slag grass, rotten bavin all can be used as fuel, close the ventilating opening in secondary air feed chamber, and the air return stove that can make common burning coal uses.
3, have characteristics simple to operate, easy to use, adjust the intake adjusting device of combustion chamber lower end and can arbitrarily adjust the firepower size, its ash disposal is also very convenient.
4, its thermal efficiency height is economized bavin more than 70% than conventional Firewood burning stove owing to adopt backfire formula combustion system, its burning thoroughly, furnace bottom only leaves white ashes, no carbon residue has smokelessly, the effect of low emission, health, environmental protection.
Marginal data
Below in conjunction with embodiment the utility model is described in further detail.
Fig. 1 is a kind of example structure schematic diagram of the utility model.
The specific embodiment
As shown in Figure 1, a kind of embodiment of the utility model comprises furnace shell 1, combustion chamber 2 and furnace panel 3, described furnace panel 3 is provided with the ring seat 4 that is used to put cooker, it is characterized in that: also comprise a stripper loop 5, described stripper loop 5 is separated into the annular return air chamber 6 on top and the annular secondary air feed chamber 7 of bottom with the toroidal cavity between furnace shell 1 and the combustion chamber 2, described annular secondary air feed chamber 7 is provided with ventilating opening 8, the wall of described combustion chamber 2 top periphery is provided with several secondary air holes 9, the downside of described combustion chamber 2 inside is provided with grate 10, and described combustion chamber 2 lower ends are provided with intake adjusting device 11.Its theory of combustion and operation sequence are as follows: at first from combustion chamber 2 faggots of inserting suitable for reading, the faggot amount is no more than the height that is provided with of the secondary air hole 9 be located on the furnace core wall, from combustion chamber 2 faggots of lighting suitable for reading, combustion chamber 2 lower ends mix up first intake simultaneously, the burning of faggot backfire formula from the top down, faggot is by dry, destructive distillation, processes such as oxidation generate the air mixture of flue gas state in the imperfect combustion mode, combustion chamber 2 is installed on the base, stripper loop 5 is separated into airproof two spaces up and down with the toroidal cavity between furnace shell 1 and the combustion chamber 2, the annular secondary air feed chamber 7 of bottom is provided with and the extraneous ventilating opening 8 that communicates, spray into combustion chamber 2 inside from secondary air hole 9 under the draft effect of air in combustion chamber 2 in the annular secondary air feed chamber 7, the air that sprays into mixes combustion at each hole place and air mixture, form several strong and powerful columns of flame, several columns of flame that annular spread inwardly sprays into make progress ascension from combustion chamber 2 ejections suitable for reading, form smokeless flames.Opening stove cover plate can heat up water and cook; The flame that rises when covering stove cover plate is obstructed into the horn-like annular tempering cavity that goes down after a rise between furnace shell 1 and combustion chamber 2, and a large amount of heat energy are by furnace shell 1 absorption and slowly to indoor release, and are warm indoor, realizes the purpose of heating, and waste gas is discharged outdoor from the body of heater flue.A part of heat energy in a part of heat energy in annular return air chamber 6 and the combustion chamber 2 reaches annular secondary air feed chamber 7 simultaneously, quickened atmosphere temperature rising and upwards mobile, air sprays into the combustion zone of combustion chamber 2 inside from secondary air hole 9, because oxygen supply abundance, its combustion efficiency is good, has given full play to the energy-conserving action of air return stove.Can regulate first intake from combustion chamber 2 lower ends as required, thereby regulate the firepower size.The utility model is the main contribution of prior art: the structure Design of cellular-type up and down of the toroidal cavity between combustion chamber 2 and the furnace shell 1 (comprising annular return air chamber 6 and annular secondary air feed chamber 7), and the secondary intake opening that will be located at the fire door place is displaced downwardly to the design of combustion chamber 2 upper areas, combustion chamber 2 upper areas become the combustion zone, after the fire door place secondary intake opening expansion among a small circle of the design with prior art, become the air feed district of combustion chamber 2 upper areas, its oxygen supply abundance, realized the automatic air feed function of second-time burning, the part that fuel is put in combustion chamber 2 bottoms is inferior combustion zone, the high temperature of combustion zone has strengthened the destructive distillation effect of inferior combustion zone fuel, the air mixture that destructive distillation produces rises to the combustion zone and fully burns, and reaches the effect of smokeless combustion.
As shown in Figure 1, a kind of improvement is that described secondary air hole 9 is the annular equally distributed circular holes of 2 to 6 circles.Find by inventor's test of many times, secondary air hole 9 is set to the uniform circular hole the best of 2 to 6 circles, these circular holes are divided into 2 to 6 layers from the bottom to top with the combustion zone, each circular hole promptly is a burning duration and degree of heating, several duration and degree of heatings form the combustion front of ascension on 2 to 6 courses, guarantee the abundant burning of air mixture like this, reached the effect of smokeless combustion basically.Certainly, described secondary air hole 9 also can be bar hole, elliptical aperture or other similar structures.
As shown in Figure 1, the another kind of improvement is to comprise that also being located at going up of combustion chamber 2 upper ends encircles cover 13, and the described cover body of going up ring cover 13 extends upward, and is provided with gap 12 between the ring port of described upward ring cover 13 and the lower edge of described ring seat 4.Last ring cover 13 has stoped hot-air directly to enter flue, and bootable hot-air is given full play to the energy-conserving action of air return stove by the return air chamber circulation of above-mentioned gap 12 between combustion chamber 2 and furnace shell 1.
As shown in Figure 1, the third improvement is the described structure that goes up 13 one-tenth toroidals of ring cover.The ring cover 13 of going up of this structure has the effect of gathering firepower, and return air is effective.
As shown in Figure 1, the 4th kind of improvement is the structure of 5 one-tenth toroidals of described stripper loop.This frame mode is simple, edge and 2 suitable for reading connections of combustion chamber in it, and its outer is connected with the inwall middle part of furnace shell 1, only needs that the toroidal cavity between furnace shell 1 and the combustion chamber 2 is separated into airproof two spaces up and down and gets final product.
The 5th kind of improvement is that described ventilating opening 8 is located at the sidewall of furnace shell 1, or is located at the lower end in annular secondary air feed chamber 7.The sidewall that ventilating opening 8 is located at furnace shell 1 is convenient to make, and also is convenient to regulate operation.
As shown in Figure 1, the 6th kind of improvement is that described stripper loop 5 is integral the formula structure with last ring cover 13.This frame mode is simple, manufacturing, easy for installation.
The another kind of improvement is to comprise that also being located at being used between furnace shell 1 side upper wall and the combustion chamber 2 adds the passage of fuel and the fire door that matches.
As shown in Figure 1, improvement again is that described intake adjusting device 11 is the board plug type structure, can certainly be the turnover plate type structure.Adjust the size (or inclination angle of adjustment turnover panel) of the air inlet of the inboard termination of plate and can adjust intake, thus the control firepower; Firmly push-and-pull plate (or upset turnover panel) has dusting function concurrently back and forth.Intake adjusting device 11 can also be that the extension set of being located at combustion chamber 2 bottoms sets the structure of transferring the wind end cap.Intake adjusting device 11 is at the mounting means of combustion chamber 2 lower ends, can be to be directly fixed on combustion chamber 2 lower ends, also can be fixed under the seat board of furnace base of combustion chamber 2 lower ends (combustion chamber 2 install with seat board on, porose on the seat board), link by seat board and combustion chamber 2 again, in any case install, get final product so long as be convenient to control the air inflow of combustion chamber 2 end openings.
The utility model is not limited to the concrete structure of the foregoing description, and the equivalent transformation of other homogeneous structure all falls within the protection domain of the present utility model.
Claims (9)
1, a kind of faggot gasification air return stove, comprise furnace shell, combustion chamber and furnace panel, described furnace panel is provided with the ring seat that is used to put cooker, it is characterized in that: also comprise a stripper loop, described stripper loop is separated into the annular return air chamber on top and the annular secondary air feed chamber of bottom with the toroidal cavity between furnace shell and the combustion chamber, described annular secondary air feed chamber is provided with ventilating opening, the wall of described combustion chamber top periphery is provided with several secondary air holes, the downside of described combustion chamber inside is provided with grate, and described combustion chamber lower end is provided with the intake adjusting device.
2, a kind of faggot gasification air return stove according to claim 1, it is characterized in that: the wall of described combustion chamber top periphery inwardly is shrunk to tight burner structure.
3, a kind of faggot gasification air return stove according to claim 2, it is characterized in that: described secondary air hole is the annular equally distributed circular holes of 2 to 6 circles.
4, according to claim 1 or 3 described a kind of faggot gasification air return stoves, it is characterized in that: comprise that also being located at going up of combustion chamber upper end encircles cover, the described cover body of going up the ring cover extends upward, and is provided with the gap between the ring port of described upward ring cover and the lower edge of described ring seat.
5, want 4 described a kind of faggot gasification air return stoves according to right, it is characterized in that: described going up encircled the structure of covering into toroidal.
6, want 5 described a kind of faggot gasification air return stoves according to right, it is characterized in that: described stripper loop becomes the structure of toroidal.
7, want 6 described a kind of faggot gasification air return stoves according to right, it is characterized in that: described ventilating opening is located at the sidewall of furnace shell or the lower end in annular secondary air feed chamber.
8, want 6 described a kind of faggot gasification air return stoves according to right, it is characterized in that: described stripper loop and last ring cover are integral the formula structure.
9, a kind of faggot gasification air return stove according to claim 8 is characterized in that: comprise that also being located at being used between furnace shell side upper wall and the combustion chamber adds the passage of fuel and the fire door that matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200620860U CN201170583Y (en) | 2008-01-27 | 2008-01-27 | Gasification return air furnace for firewood |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200620860U CN201170583Y (en) | 2008-01-27 | 2008-01-27 | Gasification return air furnace for firewood |
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| CN201170583Y true CN201170583Y (en) | 2008-12-24 |
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| CNU2008200620860U Expired - Fee Related CN201170583Y (en) | 2008-01-27 | 2008-01-27 | Gasification return air furnace for firewood |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922737A (en) * | 2010-08-11 | 2010-12-22 | 周风辉 | Gas-production energy-saving heating boiler |
| CN101666509B (en) * | 2009-09-14 | 2012-06-13 | 罗子焱 | Pot mounting device of biomass semi-gasifier |
| CN103335334A (en) * | 2013-07-17 | 2013-10-02 | 辽宁合百意生物质技术开发有限公司 | Civil multi-purpose furnace capable of economizing firewood and saving coal |
| CN106382621A (en) * | 2016-08-30 | 2017-02-08 | 成都沸鼎环保设备有限公司 | Biomass burner with double-hearth structure |
| CN107448986A (en) * | 2017-08-15 | 2017-12-08 | 池州信安电子科技有限公司 | A kind of steam vaporization unit of biological particles cooking stove |
| CN108826273A (en) * | 2018-07-27 | 2018-11-16 | 四川省焱森炉业有限公司 | A kind of furnace core improving biomass fuel utilization rate |
-
2008
- 2008-01-27 CN CNU2008200620860U patent/CN201170583Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666509B (en) * | 2009-09-14 | 2012-06-13 | 罗子焱 | Pot mounting device of biomass semi-gasifier |
| CN101922737A (en) * | 2010-08-11 | 2010-12-22 | 周风辉 | Gas-production energy-saving heating boiler |
| CN101922737B (en) * | 2010-08-11 | 2013-02-13 | 周风辉 | Gas-production energy-saving heating boiler |
| CN103335334A (en) * | 2013-07-17 | 2013-10-02 | 辽宁合百意生物质技术开发有限公司 | Civil multi-purpose furnace capable of economizing firewood and saving coal |
| CN106382621A (en) * | 2016-08-30 | 2017-02-08 | 成都沸鼎环保设备有限公司 | Biomass burner with double-hearth structure |
| CN107448986A (en) * | 2017-08-15 | 2017-12-08 | 池州信安电子科技有限公司 | A kind of steam vaporization unit of biological particles cooking stove |
| CN108826273A (en) * | 2018-07-27 | 2018-11-16 | 四川省焱森炉业有限公司 | A kind of furnace core improving biomass fuel utilization rate |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20110127 |