CN212081316U - Biomass wall air heating furnace - Google Patents
Biomass wall air heating furnace Download PDFInfo
- Publication number
- CN212081316U CN212081316U CN202020034747.XU CN202020034747U CN212081316U CN 212081316 U CN212081316 U CN 212081316U CN 202020034747 U CN202020034747 U CN 202020034747U CN 212081316 U CN212081316 U CN 212081316U
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- Prior art keywords
- chamber
- air
- air inlet
- combustion chamber
- smoke exhaust
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- 239000002028 Biomass Substances 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 title claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 113
- 239000000779 smoke Substances 0.000 claims abstract description 42
- 239000000446 fuel Substances 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000011324 bead Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000004939 coking Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000005235 decoking Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
The utility model provides a biomass wall air heating furnace, which comprises a furnace body, an automatic blanking system, a warm air system and a smoke exhaust system; the furnace body comprises an upper combustion chamber, a lower combustion chamber and an ash chamber; the lower combustion cavity is arranged above the ash chamber and is used for pyrolyzing the biomass granular fuel to obtain volatile combustible gas; the upper combustion chamber is arranged above the lower combustion chamber and is used for combusting volatile combustible gas; the automatic blanking system is arranged corresponding to the lower combustion chamber; the smoke exhaust system is communicated with the upper combustion cavity and used for discharging smoke outwards; the hot air system is arranged corresponding to the furnace body and the smoke exhaust system, and cold air flows through the furnace body and the smoke exhaust system to be heated and then is discharged outside for air heating. The utility model discloses fuel burns the chamber under and carries out incomplete combustion decomposition volatile gas, and volatile gas burns completely at last burning chamber again to a secondary air inlet combustion system is proposed, the non-coking of living beings granule can be guaranteed, the dust is still reduced simultaneously and is arranged outward.
Description
Technical Field
The utility model relates to a fireplace, specific theory has related to a living beings warm braw fireplace.
Background
The existing air heating fireplace on the market is based on a primary combustion mode of biomass particles, and the heat generated by direct combustion of the particles is used for heating an air heating exchanger.
The primary combustion is that biomass particles are directly combusted in a combustion cavity, air enters the lower part of the combustion cavity, negative pressure is generated in a wall body, and combustion waste gas is discharged out of the combustion cavity. However, this combustion mode has the disadvantage that it does not coke when the fuel ash is very small, and is not problematic; however, when the fuel is poor, that is, the ash content is large, coking occurs in the combustion chamber, which affects combustion. At present, most biomass particle fuels in the market are fuels with larger ash content, so a decoking system is added in the combustion mode. However, the existing decoking systems cannot solve the problem well due to the complicated coking condition. In addition, a large amount of dust in the primary combustion is discharged to the outside environment along with the airflow from the flue, and particulate matters are discharged, so that environmental pollution of different degrees can be caused.
For example, the Chinese patent application CN110260301A ultra-low emission energy-saving biomass circulating fluidized bed boiler adopts a constant state design theory, and through a flow state reconstruction method, aiming at the particularity of direct combustion of biomass bulk materials, improves a feeding mode, improves structures such as a hearth, a secondary air inlet, a separator and the like, strengthens combustion, improves boiler efficiency, reduces energy consumption, reduces the generation amount of pollutants such as sulfide and nitrogen oxide from a combustion source, strengthens the self-removal capability of the pollutants in the boiler, enables the boiler to have the self-removal performance of the pollutants, and realizes the emission reduction in the pollutants. Although the aim of emission reduction is achieved, the problem of coking cannot be well solved, and the structural design of the boiler and the fireplace is greatly different.
Therefore, a biomass air heating fireplace which can reduce the emission of particulate matters, improve the combustion efficiency and adapt to various biomass particles is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the defects of the prior art, thereby providing a composite coupling beam damper and an assembling method thereof.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
a biomass wall air heating furnace comprises a furnace body, an automatic blanking system, a hot air system and a smoke exhaust system; the furnace body comprises an upper combustion chamber, a lower combustion chamber and an ash chamber; the lower combustion cavity is arranged above the ash chamber and is used for pyrolyzing the biomass granular fuel to obtain volatile combustible gas; the upper combustion chamber is arranged above the lower combustion chamber and is used for combusting volatile combustible gas; the automatic blanking system is arranged corresponding to the lower combustion chamber; the smoke exhaust system is communicated with the upper combustion cavity and used for discharging smoke outwards; the hot air system is arranged corresponding to the furnace body and the smoke exhaust system, and cold air flows through the furnace body and the smoke exhaust system to be heated and then is discharged outside for air heating.
Based on the above, the top of the ash chamber is provided with an ash falling port, and the ash falling port is provided with an ash falling disc provided with vent holes; a primary air inlet is formed in the side face of the ash chamber, and an air inlet fan is arranged at the position of the primary air inlet.
Based on the above, the lower combustion chamber comprises a combustion chamber, an air chamber, a secondary air inlet disc and an ignition rod; a secondary air inlet is formed in the side surface of the air cavity; the combustion chamber and the secondary air inlet disc are arranged in the air chamber; the secondary air inlet disc is of a hollow structure, air vents are distributed on the outer wall of the secondary air inlet disc, and the air cavity is communicated with the upper combustion cavity through the secondary air inlet disc; the upper part of the combustion cavity is communicated with the upper combustion cavity through the secondary air inlet disc; the lower part of the combustion cavity is arranged corresponding to the ash falling disc; the ignition rod is arranged outside the lower combustion cavity and extends into the combustion cavity.
Based on the above, the outer wall of the combustion chamber is surrounded by the heat preservation layer.
Based on the above, the secondary air inlet disc is double-deck annular structure, and the ventilation hole diameter that the outer wall was laid is greater than the ventilation hole diameter that the inner wall was laid.
Based on the above, the combustion chamber is the cylindricality chamber, the square chamber in wind chamber, secondary air inlet dish with the combustion chamber junction is provided with hexagonal shape deep bead, will wind chamber separates to establish two upper and lower wind chambers into the intercommunication.
Based on the above, the air inlet fan is communicated with the primary air inlet through the air inlet pipeline, and the air inlet pipeline is also communicated with the air cavity.
Based on the above, the upper combustion chamber is provided with the feed inlet, the feed inlet is communicated with the automatic blanking system, and the lower part of the upper combustion chamber is funnel-shaped.
Based on the above, the smoke exhaust system comprises a smoke exhaust pipeline and a smoke exhaust fan, the smoke exhaust pipeline is communicated with the upper combustion cavity and the external environment, and the smoke exhaust fan is arranged at an external environment smoke outlet of the smoke exhaust pipeline.
Based on the above, the warm air system comprises a warm air pipeline and a cross flow fan.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model discloses a burning chamber and lower burning chamber on setting up, fuel burning chamber carries out incomplete combustion decomposition volatile gas under, and volatile gas burns completely at last burning chamber again to a secondary air inlet combustion system is proposed, can guarantee that living beings granule is not coked, has still reduced the dust simultaneously and has arranged outward.
Drawings
Fig. 1 is a schematic diagram of the principle structure of the present invention.
Fig. 2 is a schematic structural view of the furnace body part of the present invention.
Fig. 3 is a schematic view of a part of the structure of the lower combustion chamber of the present invention.
Fig. 4 is a schematic structural view of the ash tray of the present invention.
Fig. 5 is a schematic structural view of the secondary air intake plate of the present invention.
In the figure: 1. an upper combustion chamber; 2. a lower combustion chamber; 3. an ash chamber; 2-1, a combustion chamber; 2-2, a wind cavity; 2-3, a secondary air inlet disc; 2-4, an ignition rod; 2-5, a secondary air inlet; 2-6, through holes; 3-1, primary air inlet; 3-2, an air inlet pipeline; 4. biomass pellet fuel; 5. a smoke exhaust fan; 6. a cross-flow fan; 7. an ash falling plate; 8. an ash hopper; 9. a food oven; 10. broken unloader of auger.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
As shown in fig. 1-5, a biomass wall air heating furnace comprises a furnace body, an automatic blanking system, a heating system and a smoke discharging system; the furnace body comprises an upper combustion chamber 1, a lower combustion chamber 2 and an ash chamber 3; the lower combustion cavity 2 is arranged above the ash chamber 3 and is used for pyrolyzing the biomass granular fuel 4 to obtain volatile combustible gas; the upper combustion chamber 1 is arranged above the lower combustion chamber 2 and is used for combusting volatile combustible gas; the automatic blanking system is arranged corresponding to the lower combustion chamber 2; the smoke exhaust system is communicated with the upper combustion cavity 1 and comprises a smoke exhaust pipeline and a smoke exhaust fan 5, the smoke exhaust pipeline is communicated with the upper combustion cavity 1 and the external environment, and the smoke exhaust fan 5 is arranged at a smoke outlet of the external environment of the smoke exhaust pipeline; the hot air system is arranged corresponding to the furnace body and the smoke exhaust system and comprises a hot air pipeline and a cross flow fan 6, and under the action of the cross flow fan 6, cold air flows through the furnace body and the smoke exhaust system to be heated and then is discharged outside to be heated by air.
Specifically, the top of the ash chamber 3 is provided with an ash falling disc 7 provided with vent holes; the side surface of the ash chamber 3 is provided with a primary air inlet 3-1, and an air inlet fan is arranged at the primary air inlet 3-1. The lower combustion chamber 2 comprises a combustion chamber 2-1, an air chamber 2-2, a secondary air inlet disc 2-3 and an ignition rod 2-4; a secondary air inlet 2-5 is formed in the side surface of the air cavity 2-2; the combustion chamber 2-1 and the secondary air inlet disc 2-3 are arranged inside the air chamber 2-2; the secondary air inlet disc 2-3 is of a hollow structure, air vents are distributed on the outer wall of the secondary air inlet disc, and the air cavity 2-2 is communicated with the upper combustion cavity 1 through the secondary air inlet disc 2-3; the upper part of the combustion cavity 2-1 is communicated with the upper combustion cavity 1 through the secondary air inlet disc 2-3; the lower part of the combustion chamber 2-1 is arranged corresponding to the ash falling disc 7; the ignition rod 2-4 is arranged in a through hole 2-6 formed in the outer portion of the lower combustion cavity 2 and extends into the combustion cavity 2-1.
The utility model discloses a theory of operation:
the biomass particle fuel 4 is fed into the furnace body by an automatic feeding system, falls on the bottom of the lower combustion cavity 2, and is automatically ignited by the ignition rod 2-4 to ignite the biomass particle fuel 4 in the lower combustion cavity 2.
And starting the air inlet fan, and allowing air to enter the lower combustion chamber 2 from the primary air inlet 3-1 and the air vent of the ash falling disc 7. The biomass particle fuel 4 is fully combusted, after a period of combustion, when the biomass particle fuel 4 in the lower combustion chamber 2 is accumulated more and more, the temperature is increased, and at this time, the primary air inlet 3-1 is closed. At this time, because the air inlet of the lower combustion chamber 2 is not smooth, the biomass particle fuel 4 is not completely combusted, but is pyrolyzed to decompose volatile combustible gas.
Volatile combustible gas enters the upper combustion chamber 1 at this time, and meanwhile, air entering the air chamber 2-2 from the secondary air inlet 2-5 enters the upper combustion chamber 1 from the air vent of the secondary air inlet disc 2-3 to be mixed and combusted with the volatile combustible gas, namely the actual combustion is the upper combustion chamber 1 but not the lower combustion chamber 2.
Then, on the one hand, the flue gas generated by the combustion in the upper combustion chamber 1 enters the smoke exhaust duct and is exhausted to the external environment. On the other hand, the cross flow fan 6 draws air from the room, the blown air is heated through the contact place of the furnace body and the smoke exhaust pipeline, and then is exhausted to the room from the air outlet of the warm air pipeline for air heating.
In other embodiments, an ash hopper 8 is arranged in the ash chamber 3 corresponding to the lower part of the ash falling disc 7. The ash and slag generated after the biomass granular fuel 4 is combusted naturally fall into an ash hopper 8 from an ash falling disc 7 and are poured out periodically. A food oven 9 can be arranged at the top of the upper combustion chamber 1, so that heat energy is fully utilized, and the multifunction of the biomass air heating fireplace is improved. The automatic blanking system adopts a packing auger crushing blanking device 10 driven by a motor.
Furthermore, the outer wall of the combustion chamber is surrounded by a heat insulation layer, so that the pyrolysis temperature in the combustion chamber can be ensured during pyrolysis.
Furthermore, the secondary air inlet disc is of a double-layer annular structure, the diameter of the vent holes formed in the outer wall of the secondary air inlet disc is larger than that of the vent holes formed in the inner wall of the secondary air inlet disc, and the air inlet of the secondary air inlet disc is stable and smooth due to the double-layer air inlet disc structure. The combustion chamber is the cylindricality chamber, the square chamber in wind chamber, secondary air inlet dish with the combustion chamber junction is provided with hexagonal shape deep bead 2-7, will wind the chamber separate to be established as upper and lower two wind chambers of intercommunication, further guarantees secondary air inlet's steady flow.
Furthermore, the air inlet fan is communicated with the primary air inlet 3-1 through an air inlet pipeline 3-2, and the air inlet pipeline 3-2 is also communicated with the air cavity 2-2.
Further, the upper combustion chamber is provided with a feed inlet which is communicated with the automatic blanking system, and the lower part of the upper combustion chamber is arranged into a funnel shape, so that biomass particle fuel is guided to smoothly fall into the lower combustion chamber.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (10)
1. A biomass air heating fireplace is characterized in that: comprises a furnace body, an automatic blanking system, a warm air system and a smoke exhaust system;
the furnace body comprises an upper combustion chamber, a lower combustion chamber and an ash chamber; the lower combustion cavity is arranged above the ash chamber and is used for pyrolyzing the biomass granular fuel to obtain volatile combustible gas; the upper combustion chamber is arranged above the lower combustion chamber and is used for combusting volatile combustible gas;
the automatic blanking system is arranged corresponding to the lower combustion chamber;
the smoke exhaust system is communicated with the upper combustion cavity and used for discharging smoke outwards;
the hot air system is arranged corresponding to the furnace body and the smoke exhaust system, and cold air flows through the furnace body and the smoke exhaust system to be heated and then is discharged outside for air heating.
2. The biomass air-heated fireplace of claim 1, wherein: an ash falling port is formed in the top of the ash chamber, and an ash falling disc with vent holes is arranged on the ash falling port; a primary air inlet is formed in the side face of the ash chamber, and an air inlet fan is arranged at the position of the primary air inlet.
3. The biomass air-heated fireplace of claim 2, wherein: the lower combustion chamber comprises a combustion chamber, an air chamber, a secondary air inlet disc and an ignition rod;
a secondary air inlet is formed in the side surface of the air cavity;
the combustion chamber and the secondary air inlet disc are arranged in the air chamber;
the secondary air inlet disc is of a hollow structure, air vents are distributed on the outer wall of the secondary air inlet disc, and the air cavity is communicated with the upper combustion cavity through the secondary air inlet disc;
the upper part of the combustion cavity is communicated with the upper combustion cavity through the secondary air inlet disc;
the lower part of the combustion cavity is arranged corresponding to the ash falling disc;
the ignition rod is arranged outside the lower combustion cavity and extends into the combustion cavity.
4. The biomass air-heated fireplace of claim 2, wherein: and the outer wall of the combustion cavity is surrounded with a heat insulation layer.
5. A biomass air-heated fireplace as claimed in claim 3 wherein: the secondary air inlet disc is of a double-layer annular structure, and the diameter of the vent holes formed in the outer wall is larger than that of the vent holes formed in the inner wall.
6. A biomass air-heated fireplace as claimed in claim 3 wherein: the combustion chamber is the cylindricality chamber, the square chamber in wind chamber, secondary air inlet dish with the combustion chamber junction is provided with hexagonal shape deep bead, will the wind chamber separates to establish two upper and lower wind chambers into the intercommunication.
7. A biomass air-heated fireplace as claimed in claim 3 wherein: the air inlet fan is communicated with the primary air inlet through an air inlet pipeline, and the air inlet pipeline is also communicated with the air cavity.
8. A biomass air-heated fireplace as claimed in claim 3 wherein: the upper combustion chamber is provided with a feed inlet which is communicated with the automatic blanking system, and the lower part of the upper combustion chamber is funnel-shaped.
9. The biomass air-heated fireplace of claim 1, wherein: the smoke exhaust system comprises a smoke exhaust pipeline and a smoke exhaust fan, the smoke exhaust pipeline is communicated with the upper combustion cavity and the external environment, and the smoke exhaust fan is arranged at a smoke outlet of the external environment of the smoke exhaust pipeline.
10. The biomass air-heated fireplace of claim 1, wherein: the warm air system comprises a warm air pipeline and a cross flow fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020034747.XU CN212081316U (en) | 2020-01-08 | 2020-01-08 | Biomass wall air heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020034747.XU CN212081316U (en) | 2020-01-08 | 2020-01-08 | Biomass wall air heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212081316U true CN212081316U (en) | 2020-12-04 |
Family
ID=73565932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020034747.XU Expired - Fee Related CN212081316U (en) | 2020-01-08 | 2020-01-08 | Biomass wall air heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212081316U (en) |
-
2020
- 2020-01-08 CN CN202020034747.XU patent/CN212081316U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201204 |