CN212005646U - Positive and negative burning combined coal stove - Google Patents
Positive and negative burning combined coal stove Download PDFInfo
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- CN212005646U CN212005646U CN201922101691.5U CN201922101691U CN212005646U CN 212005646 U CN212005646 U CN 212005646U CN 201922101691 U CN201922101691 U CN 201922101691U CN 212005646 U CN212005646 U CN 212005646U
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Abstract
The utility model discloses a positive and negative burning combines coal-fired stove, include the base and install in the furnace body of base top, be provided with the grate between base and the furnace body, the furnace body rear portion is connected with the smoke box, the inside vertical baffle that is used for separating the inner space that is provided with of furnace body, the cooking flame path at the front portion pyrolysis chamber and rear portion of formation, the furnace body is connected to the upper end of baffle, be provided with intercommunication pyrolysis chamber and cooking flame path between the lower extreme of baffle and the grate and be used for the clearance that the semicoke passes through, the pyrolysis chamber top is provided with the coal door to be provided with the coal door, cooking flame path top is provided with the cooking. Has the advantages of smoke abatement in back burning and strong firepower in front burning cooking, and eliminates the defects of weak back burning cooking and more black smoke in front burning. The heating time period is long, and the fire is required to be moderate and stable; cooking time is short, and fire is required to be vigorous. The semicoke is sent into a normal combustion area before cooking, so that the firepower can be quickly improved; and the normal combustion area is smaller, so that the firepower is rapidly reduced after the semicoke is burnt out, and the fuel is not wasted.
Description
Technical Field
The utility model relates to a cooking stove field especially relates to a positive and negative burning combines coal-fired stove.
Background
In rural and suburban areas of China, a large number of families still adopt relatively dispersed coal-fired heating modes, so that the efficiency is low, the pollution is serious, and the influence on the environment is several times of the proportion of the fuel consumption. At present, China consumes a large amount of coal every year, wherein all civil parts are basically scattered incineration, environmental protection measures such as dust removal, desulfurization and the like are not adopted, and the amount of pollutants discharged by burning of scattered coal is 5 to 10 times of that discharged by burning of thermal power coal.
The combustion process of the household coal-fired stove is periodic, air is easy to be insufficient in the initial combustion stage, coal gas generated by coal pyrolysis gasification cannot be sufficiently combusted, and a large amount of toxic and combustible components are discharged along with flue gas, so that environmental pollution and energy loss are caused; the coal layer is thinned at the later stage of combustion, and the excessive air can reduce the furnace temperature and the heat transfer efficiency and increase the heat loss of smoke exhaust. The combustion efficiency of coal is improved by a partial furnace type only through a high-temperature oxygen enrichment mode, but the emission of nitrogen oxides (NOx) is increased. In addition, the increase of the combustion temperature also increases the desulfurization reverse reaction, and reduces the desulfurization efficiency in the furnace.
Existing stoves are classified into two types, namely a direct-fired type and a back-fired type, wherein the direct-fired type is the most common direct-fired type in the direct combustion. When the solid fuel is burnt, the flame is spread along the natural flowing direction of the hot flue gas, the advantages are high combustion intensity, strong firepower and capability of meeting the cooking requirement of a user, and the defects are that the volatile matters are separated out quickly, black smoke is easily produced, and the solid fuel is suitable for fuels with low volatile matters such as anthracite. When the back-burning solid fuel is burnt, the flame is spread against the natural flow direction of hot flue gas, and has the advantages of high furnace temperature, full combustion, low particle emission concentration, low combustion intensity and weak firepower, can delay the volatilization analysis speed, can basically eliminate black smoke, and is not suitable for cooking and is suitable for high volatile fuels such as bituminous coal and the like.
At present, most of household coal-fired stoves use a common forward combustion principle, air enters from the bottom of the stove and passes through the whole hearth, the combustion process is periodic, the air is easy to be insufficient in the initial combustion stage, coal gas generated by coal pyrolysis and gasification cannot be sufficiently combusted, a large amount of toxic and combustible components are discharged along with smoke, and environmental pollution and energy loss are caused; the coal layer is thinned at the later stage of combustion, and the excessive air can reduce the furnace temperature and the heat transfer efficiency and increase the heat loss of smoke exhaust.
Therefore, how to provide a coal-fired furnace capable of overcoming the above-mentioned drawbacks is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a just reverse combustion combines coal-fired stove, is provided with pyrolysis chamber and cooking flame path inside the furnace body, carries out just burning and reverse burning respectively, has the advantage of two kinds of combustion methods concurrently, overcomes the defect that prior art exists.
For solving the technical problem, the utility model provides a positive and negative burning combines coal-fired stove, including the base with install in the furnace body of base top, the base with be provided with the grate between the furnace body, the furnace body rear portion is connected with the smoke box, the inside vertical baffle that is used for separating the inner space that is provided with of furnace body forms anterior pyrolysis chamber and the cooking flame path at rear portion, the upper end of baffle is connected the furnace body, the lower extreme of baffle with be provided with the intercommunication between the grate the pyrolysis chamber with the cooking flame path is used for the clearance that the semicoke passes through, the pyrolysis chamber top is provided with the coal filling mouth to be provided with the coal filling door, cooking flame path top is provided with the cooking mouth.
Preferably, the furnace body and the smoke box shell comprise an inner container and an outer container which are spaced from each other, a water jacket interlayer is formed between the inner container and the outer container, a water outlet communicated with the water jacket interlayer is arranged at the upper part of the smoke box, and a water return port communicated with the water jacket interlayer is arranged at the lower part of the furnace body.
Preferably, the smoke box includes vertical connecting portion and horizontally transition portion, the one end intercommunication of transition portion the upper portion of cooking flame path, the other end intercommunication of transition portion the lower extreme of connecting portion, the upper end intercommunication chimney of connecting portion, the bottom of transition portion is provided with the bottom deashing door, the both sides of connecting portion are provided with the lateral part deashing door.
Preferably, the volume of the pyrolysis chamber is greater than the volume of the cooking flame path.
Preferably, a drawable ash bucket is installed in the base.
Preferably, a water tank communicated with the water jacket interlayer is arranged in the partition plate.
Preferably, the cooking opening is arranged right above the cooking flue, and the coal feeding opening is arranged obliquely above the pyrolysis chamber and close to the front end of the pyrolysis chamber.
Preferably, a heat exchange water pipe communicated with the water jacket interlayer is arranged in the smoke box.
Preferably, a plurality of the heat exchange water pipes in the connecting part extend from front to back and incline upwards, and a plurality of the heat exchange water pipes in the transition part extend transversely.
Preferably, the connecting part is provided with an explosion-proof valve communicated with the water jacket interlayer.
The utility model provides a positive and negative burning combines coal-fired stove, include the base and install in the furnace body of base top, be provided with the grate between base and the furnace body, the furnace body rear portion is connected with the smoke box, the inside vertical baffle that is used for separating the inner space that is provided with of furnace body, the cooking flame path at the anterior pyrolysis chamber of formation and rear portion, the furnace body is connected to the upper end of baffle, be provided with intercommunication pyrolysis chamber and cooking flame path between the lower extreme of baffle and the grate and be used for the clearance that the semicoke passes through, the pyrolysis chamber top is provided with the coal door to be provided with the coal door, cooking flame path top is provided with the cooking mouth.
Through inside pyrolysis chamber and the cooking flame path of setting up of furnace body, the pyrolysis chamber is the back-fire region, and the cooking flame path is the normal combustion region, and fuel is piled up at the pyrolysis chamber after adding, supplies primary air through the grate, on the grate, pyrolysis chamber and cooking flame path lower part are main combustion area, and the regulation burning of the coal-fired cooperation air feed volume produces the heat, and the small part heat supplies upper portion fuel pyrolysis production pyrolysis gas and semicoke under the lean oxygen state, and most heat moves ahead along with the flue gas. In the main combustion area, the pyrolysis gas and the semicoke are combusted together; due to the negative pressure effect formed by the chimney draft, the pyrolysis products of the coal must be fully combusted through the high-temperature semicoke combustion layer, so that the black smoke generated during the combustion of the bituminous coal can be effectively eliminated, and the production of nitrogen oxides is reduced. The burning flame enters the chimney through the cooking port and the smoke box, and heats the cooker along the way to complete the heating. The cooking flue mainly stores the semicoke after pyrolysis in the pyrolysis chamber and enters the cooking flue by the modes of shaking the grate, operating the fire hook and the like. The semicoke is burnt in a normal combustion mode, so that the problem of concentrated separation of volatile components does not exist, and the cooking firepower can be improved.
Has the advantages of smoke abatement in back burning and strong firepower in front burning cooking, and eliminates the defects of weak back burning cooking and more black smoke in front burning. The heating and cooking dual-purpose stove is more suitable for the use habit of users, the heating time period is long, and the fire power is moderate and stable; cooking time is short, and fire is required to be vigorous. The semicoke is sent into a normal combustion area before cooking, so that the firepower can be quickly improved; and the normal combustion area is smaller, so that the firepower is rapidly reduced after the semicoke is burnt out, and the fuel is not wasted.
Drawings
Fig. 1 is a schematic structural view of a specific embodiment of the coal stove with combination of positive and negative combustion provided by the present invention.
Detailed Description
The core of the utility model is to provide a just burning combines coal-fired stove, is provided with pyrolysis chamber and cooking flame path inside the furnace body, carries out just burning and anti-burning respectively, has the advantage of two kinds of combustion methods concurrently, overcomes the defect that prior art exists.
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a coal stove with combination of positive and negative combustion according to an embodiment of the present invention.
The utility model discloses embodiment provides a positive and negative burning combines coal-fired stove, including base 1 and furnace body 2, furnace body 2 installs in base 1 top, is provided with grate 3 between base 1 and furnace body 2, and furnace body 2 rear portion is connected with smoke box 4, and the one end that is connected with smoke box 4 promptly is the rear, and relative one end is the place ahead. Be provided with the vertical baffle 5 that is used for separating the inner space inside furnace body 2, form anterior pyrolysis chamber 6 and the cooking flame path 7 at rear portion, furnace body 2 is connected to the upper end of baffle 5, set up the clearance between the lower extreme of baffle 5 and the grate 3, this clearance is used for intercommunication pyrolysis chamber 6 and cooking flame path 7, be used for the semicoke thing to pass through simultaneously, be provided with the coal feeding mouth in 6 tops of pyrolysis chamber, be used for adding fuel, and be provided with coal feeding door 8, cooking flame path 7 top is provided with cooking mouth 9, be used for placing and adding the cooking utensil.
Through inside pyrolysis chamber 6 and the cooking flame path 7 of setting up at furnace body 2, pyrolysis chamber 6 is the back-fire region, cooking flame path 7 is the normal combustion region, pile up at pyrolysis chamber 6 after the fuel adds, supply the primary air through grate 3, on the grate 3, pyrolysis chamber 6 and cooking flame path 7 lower part are main combustion area, the regulation burning of the coal-fired cooperation air feed volume produces the heat, the small part heat supplies upper portion fuel pyrolysis production pyrolysis gas and semicoke under the lean oxygen state, most heat moves ahead along with the flue gas. In the main combustion area, the pyrolysis gas and the semicoke are combusted together; due to the negative pressure effect formed by the chimney draft, the pyrolysis products of the coal must be fully combusted through the high-temperature semicoke combustion layer, so that the black smoke generated during the combustion of the bituminous coal can be effectively eliminated, and the production of nitrogen oxides is reduced. The burning flame enters the chimney through the cooking port 9 and the smoke box 4, and heats the cooker along the way to complete the heating. The cooking flue 7 mainly stores the semicoke which is pyrolyzed in the pyrolysis chamber 6 and enters the cooking flue 7 by the modes of shaking the fire grate 3, operating a fire hook and the like. The semicoke is burnt in a normal combustion mode, so that the problem of concentrated separation of volatile components does not exist, and the cooking firepower can be improved.
Has the advantages of smoke abatement in back burning and strong firepower in front burning cooking, and eliminates the defects of weak back burning cooking and more black smoke in front burning. The volume of the pyrolysis chamber 6 is larger than that of the cooking flue 7, so that the use habit of a user is better met, the user uses a heating and cooking dual-purpose stove, the heating time period is long, and the fire power is moderate and stable; cooking time is short, and fire is required to be vigorous. The semicoke is sent into a normal combustion area before cooking, so that the firepower can be quickly improved; and the normal combustion area is smaller, so that the firepower is rapidly reduced after the semicoke is burnt out, and the fuel is not wasted.
An ash bucket 16 which can be drawn out is also arranged in the base 1, and the air supply quantity is adjusted through the opening and closing size of the ash bucket 16. Cooking mouth 9 sets up directly over cooking flame path 7, is convenient for place the cooking utensil, and the coal feeding mouth sets up in pyrolysis chamber 6 oblique top, is close to pyrolysis chamber 6 front end, the operation of being convenient for adds the coal. Or the installation connection mode and the arrangement mode of each part are adjusted according to the condition, which is within the protection scope of the utility model.
The utility model discloses in the positive and negative burning combination coal-fired stove that embodiment provided, in order to improve the heating effect, can increase hot-water heating system, the shell of furnace body 2 and smoke box 4 includes inner bag 10 and outer courage 11 of mutual spaced, forms water jacket intermediate layer between inner bag 10 and outer courage 11, and smoke box 4 upper portion is provided with intercommunication water jacket intermediate layer's delivery port 12, and furnace body 2 lower part is provided with intercommunication water jacket intermediate layer's return water mouth 13. In the using process of the stove, combustion flame enters the chimney through the cooking port 9 and the smoke box 4, heats the cooker along the way, heats water in the interlayer of the water jacket, and transmits heat to circulating water through the water outlet 12 and the water return port 13 to finish heating.
Further, smoke box 4 includes vertical connecting portion and horizontally transition portion, and the one end intercommunication cooking flame path 7's of transition portion upper portion, the lower extreme of the other end intercommunication connecting portion of transition portion, the upper end intercommunication chimney of connecting portion, the flue gas of being convenient for normally discharges. In order to quickly clean dust in the smoke box, the bottom of the transition part is provided with a bottom ash removal door 14, and the two sides of the connecting part are provided with side ash removal doors 15 which are fixed by screwing bolts by hands. Or the structure of the smoke box 4 is adjusted, and the smoke box is not provided with a horizontal part and is directly communicated with the furnace body 2.
On the basis of the positive and negative combustion combined coal-fired stove provided by the above embodiments, in order to improve the heat exchange effect, the smoke box 4 is provided with a heat exchange water pipe 17 communicated with the water jacket interlayer. Can increase heat transfer water pipe 17's quantity, a plurality of heat transfer water pipe 17 in the connecting portion extend by preceding backward to tilt up, a plurality of heat transfer water pipe 17 in the transition portion transversely extend, and the extending direction mutually perpendicular of heat transfer water pipe 17 in two parts promptly effectively improves the contact with the high temperature flue gas. Furthermore, a water tank communicated with the water jacket interlayer is arranged in the partition plate 5, so that heating of heating water in the furnace is increased.
An explosion-proof valve 18 communicated with the water jacket interlayer can be arranged at the connecting part, so that the safety of the stove is improved.
The positive and negative combustion combined coal-fired stove provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A positive and negative combustion combined coal-fired stove, which comprises a base (1) and a stove body (2) arranged above the base (1), a fire grate (3) is arranged between the base (1) and the furnace body (2), the rear part of the furnace body (2) is connected with a smoke box (4), it is characterized in that a vertical clapboard (5) for separating the inner space is arranged in the furnace body (2) to form a front pyrolysis chamber (6) and a rear cooking flue (7), the upper end of the clapboard (5) is connected with the furnace body (2), a gap for communicating the pyrolysis chamber (6) with the cooking flame path (7) and allowing semi-coke to pass through is arranged between the lower end of the clapboard (5) and the fire grate (3), a coal feeding port is arranged above the pyrolysis chamber (6), and is provided with a coal feeding door (8), and a cooking port (9) is arranged above the cooking flue (7).
2. The positive and negative combustion coal-fired furnace set according to claim 1, wherein the outer shells of the furnace body (2) and the smoke box (4) comprise an inner container (10) and an outer container (11) which are spaced from each other, a water jacket interlayer is formed between the inner container (10) and the outer container (11), a water outlet (12) communicated with the water jacket interlayer is arranged at the upper part of the smoke box (4), and a water return port (13) communicated with the water jacket interlayer is arranged at the lower part of the furnace body (2).
3. The positive and negative combustion combined coal-fired stove according to claim 2, characterized in that the smoke box (4) comprises a vertical connecting portion and a horizontal transition portion, one end of the transition portion is communicated with the upper portion of the cooking flue (7), the other end of the transition portion is communicated with the lower end of the connecting portion, the upper end of the connecting portion is communicated with a chimney, the bottom of the transition portion is provided with a bottom ash removing door (14), and the two sides of the connecting portion are provided with side ash removing doors (15).
4. The direct and reverse combustion combined coal-fired stove according to claim 3, characterized in that the volume of the pyrolysis chamber (6) is larger than the volume of the cooking flame path (7).
5. The positive and negative combustion combined coal-fired stove according to claim 4, characterized in that a drawable ash hopper (16) is installed in the base (1).
6. The positive and negative combustion combined coal-fired stove according to claim 5, characterized in that a water tank communicating with the water jacket interlayer is arranged in the partition plate (5).
7. The coal-fired stove with the combination of positive and negative combustion as claimed in claim 6, characterized in that the cooking opening (9) is arranged right above the cooking flame path (7), and the coal-feeding opening is arranged obliquely above the pyrolysis chamber (6) and close to the front end of the pyrolysis chamber (6).
8. The positive and negative combustion combined coal-fired stove according to any one of claims 3 to 7, characterized in that a heat exchange water pipe (17) communicated with the water jacket interlayer is arranged in the smoke box (4).
9. The stokehold combined coal-fired furnace as set forth in claim 8, wherein a plurality of said heat exchange water pipes (17) in said connecting portion extend from front to rear and are inclined upward, and a plurality of said heat exchange water pipes (17) in said transition portion extend laterally.
10. The positive-reverse combustion coal-fired furnace set forth in claim 9 wherein the connecting portion is provided with an explosion-proof valve (18) communicating with the water jacket sandwich.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922101691.5U CN212005646U (en) | 2019-11-27 | 2019-11-27 | Positive and negative burning combined coal stove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922101691.5U CN212005646U (en) | 2019-11-27 | 2019-11-27 | Positive and negative burning combined coal stove |
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| CN212005646U true CN212005646U (en) | 2020-11-24 |
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| CN201922101691.5U Active CN212005646U (en) | 2019-11-27 | 2019-11-27 | Positive and negative burning combined coal stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833428A (en) * | 2021-01-22 | 2021-05-25 | 联合优发生物质能源徐州有限公司 | Civil biomass briquette and particle dual-purpose cooking and baking stove |
-
2019
- 2019-11-27 CN CN201922101691.5U patent/CN212005646U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833428A (en) * | 2021-01-22 | 2021-05-25 | 联合优发生物质能源徐州有限公司 | Civil biomass briquette and particle dual-purpose cooking and baking stove |
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