Background technique
In China rural area and suburban area, at least 200,000,000 people use the coal heating mode of relative distribution, not only efficiency
It is low, seriously polluted, and the influence to environment is several times as much as ratio shared by its fuel consumption.
Main reason is that the combustion process of Domestic coal stove all has periodicity, burning initial stage is easy lack of air, coal
The coal gas that pyrolytic gasification generates is unable to full combustion, a large amount of to poison with combustible component with flue gas emission, causes environmental pollution and energy
Amount loss;Late combustion coal seam is thinned, and excessive air can reduce furnace temperature and heat transfer efficiency again, and increase heat loss due to exhaust gas.Have
The type of furnace burning of coal efficiency is only improved by high-temperature oxygen-enriched mode, but can increase nitrogen oxides (NOx) discharge.Separately
Outside, improving ignition temperature also will increase desulfurization back reaction, reduce desulfuration in furnace efficiency.Therefore, jet-black, CO and NOx, SO2 are released
Coupling emission problem be long-standing technological difficulties in combustion technology.
Currently, Domestic coal stove mostly uses positive burn and instead two kinds of principles of burning.
Mostly using common positive burning principle, air enters Domestic coal stove from furnace bottom, passes through entire burner hearth, burning
Process has periodically, and burning initial stage is easy lack of air, and the coal gas of coal pyrolytic gasified generation is unable to full combustion, a large amount of to poison
With combustible component with flue gas emission, environmental pollution and energy loss are caused;Late combustion coal seam is thinned, and excessive air can drop again
Low furnace temperature and heat transfer efficiency, and increase heat loss due to exhaust gas.Some type of furnaces only improve burning of coal by high-temperature oxygen-enriched mode
Efficiency, but discharged nitrous oxides can be increased.
Anti- principle of burning refers to that high-temperature flue gas is taken out some or all low-temperature space heating for being sent to burner hearth does not fire
The coal of burning so that coal be easy burning, burning more thoroughly.Benefit is that fuel availability is relatively high, ash content carbon ratio
It is lower.But more return structures need to be used by instead burning principle stove, and stove volume is big, and it is at high cost, it is unfavorable for promoting, uses.
Utility model content
The purpose of the utility model is to provide a kind of more backhaul reverse burning furnaces to have, and the thermal efficiency is higher.
To achieve the above object, the utility model provides a kind of more backhaul reverse burning furnace tools, including liner and outer gallbladder, the two
Between formed recirculated water water jacket;The stove has cooking quirk and flue, and the top of the two is connected to;The side of the cooking quirk
Equipped with the first sink, the second sink is equipped between the other side and the flue;The bottom of the flue is connected to smoke box, and the two
Between be equipped with third sink;First sink, second sink, the third sink are connected to the water jacket.
Preferably, water pipe is additionally provided in the smoke box, the water pipe is connected to the water jacket.
Preferably, the bottom of the cooking quirk is connected to the bottom of coal store, and the bottom of the coal store is surrounded by
Refractory material.
Preferably, the bottom part down of the coal store is equipped with fire grate, and the lower section of the fire grate is equipped with ash bucket.
It preferably, further include induced wind path and wind-guiding wind path, the air inlet of the induced wind path is connected to new wind regime, outlet air
Mouth is located at the top of coal store;The air inlet of the wind-guiding wind path is located at the top of the coal store, and air outlet is located at the storage
The bottom of coal bunker.
Preferably, the secondary wind path of the air inlet connection stove of the induced wind path.
Preferably, the secondary wind path includes being separately positioned on cooking quirk side and the first wind path being laterally extended and
Two wind paths, the two are connected to by intermediate wind path, and first wind path and second wind path all have and lead to the cooking quirk
Multiple air holes;Second wind path is also connected to vertically arranged third wind path, and the bottom of the third wind path passes through secondary
Air port is in communication with the outside.
Preferably, the air-out direction of the air holes and the angle in flow of flue gas direction in the cooking quirk are obtuse angle.
More backhaul reverse burning furnace tools provided by the utility model, including liner and outer gallbladder, form recirculated water water between the two
Set;The stove has cooking quirk and flue, and the top of the two is connected to;The side of the cooking quirk is equipped with the first sink, separately
The second sink is equipped between side and the flue;The bottom of the flue is connected to smoke box, and is equipped with third water between the two
Slot;First sink, second sink, the third sink are connected to the water jacket.In this way, high-temperature flue gas is flowing through
After the heating cooker of main heat exchange face, it is not directly discharged into chimney, but can continue to heat related heated body, is improved
The thermal efficiency of stove.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-Fig. 3 is please referred to, Fig. 1 is the structural schematic diagram of counter-combustion coal stove provided by the utility model;Fig. 2 is this reality
With the structural schematic diagram of the secondary wind path of novel provided counter-combustion coal stove;Fig. 3 is provided by the utility model counter combusts
The air holes set-up mode schematic diagram of coal stove.
In the first specific embodiment, more backhaul reverse burning furnaces tool provided by the utility model, furnace body by liner and
Outer gallbladder double-layer structure is constituted, and can be both made using steel plate;The two is tightly connected, to form recirculated water water jacket.
The coal store 2 of counter-combustion coal stove (more backhaul reverse burning furnace tools i.e. described above) can be formed in the first sink 21 and furnace
Have between antetheca, the top of the furnace body antetheca is equipped with coal filling hole 1, and fire grate can be set in the lower section of cooking quirk 4 and coal store 2
3, ash bucket 8 can be set in the bottom of fire grate 3.Refractory material 9 can also be arranged in the bottom surrounding of cooking quirk 4 and coal store 2.
The first sink 21 and the second sink 22 can be respectively set in the two sides of cooking quirk 4, in this way in the mistake of heating cooker
The water of the first sink 21 and the second sink 22 will be also heated in journey, improve fuel utilization efficiency.
Cooking quirk 4 is also connected to flue 5, and the two sides of flue 5 are respectively the second sink 22 and third sink 23;In this way, high
Warm flue gas is not directly entered chimney 7 after heating cooker, but has obtained further utilization, the thermal efficiency obtained into
One step improves.
Smoke box 6 is located at the other side of third sink 23 and is connected to flue 5, therefore the flue gas that flue 5 is discharged will enter cigarette
Case 6, and water pipe 24 therein is heated, so that the thermal efficiency is further improved.
First sink 21, the second sink 22, third sink 23 and water pipe 24 are connected to the water jacket, are followed to be formed
Ring.Furnace body also has water return outlet 20 and water outlet 25.
The high-temperature flue gas of above-mentioned counter-combustion coal stove, can be to related water while the heating cooker of main heat exchange face and later
Slot and water pipe are repeatedly reheated, and are realized the multiple utilization of high-temperature flue gas, are significantly improved the thermal efficiency.
In another embodiment, the structure inside coal store 2 can also be further improved.
Induced wind path 11 and wind-guiding wind path can be set in coal store 2, wherein the air inlet and fresh air of induced wind path 11
Source connection, air outlet are located at the top of coal store 2.
The air inlet of the wind-guiding wind path is similarly positioned in the top of coal store 2, and air outlet is located at the bottom of coal store 2.Draw
Wind wind path 11 and the wind-guiding wind path can be located at the two sides of coal store 2, the essentially vertical extension of the two.
The air inlet of fresh air self-induced-air wind path 11 from new wind regime reaches the top of coal store 2, after being mixed with flue gas by
2 bottom of coal store is reached via wind-guiding wind path, so that the fuel of hot spots be made more fully to be burnt.In this way, coal storage
Flue gas in storehouse 2 can constantly import hot spots, reduce the flue gas assembled in coal store 2, and then reduce in coal store 2
The generation of tar.
During coal, coal filling hole 1 opens that coal store 2 is made to be in communication with the outside, and flue gas therein can be more
It moves smoothly through wind-guiding wind path and enters hot spots, equally can be avoided flue gas and escape.
As previously mentioned, the air inlet of induced wind path 11 is connected to new wind regime, it can be the directly connection external world, be also possible to connect
Lead to secondary wind path.
In another embodiment specific implementation mode, the Secondary Air circuit of counter-combustion coal stove provided by the utility model includes the
One wind path 13 and the second wind path 14, the two is separately positioned on 4 two sides of cooking quirk, and generally laterally extends.
First wind path 13 is connected with the second wind path 14 by intermediate wind path 10, and Fig. 2 is to overlook visual angle.Second wind path 14 is also
It is connected to the third wind path 15 being substantially vertically arranged, the bottom setting of third wind path 15 is in communication with the outside by overfiren air port 16.
The bottom of third wind path 15 may be provided for blocking or opening the overfiren air port baffle of overfiren air port 16;Certainly, it is not provided with
Baffle is also possible.
First wind path 13 and the second wind path 14 all have multiple air holes 102, and air holes 102 leads to cooking quirk 4.
The air-out direction of air holes 102 obviously will not be parallel with flow of flue gas direction in cooking quirk 4, therefore will be with cooking fire
Flue gas in road 4 forms turbulent flow, and flue gas will be mixed with Secondary Air, improve flue gas utilization efficiency, reduces jet-black, CO etc.
The discharge of pollutant improves stove and prolongs burning efficiency.
Flue gas and Secondary Air is mixed when flow of flue gas direction forms obtuse angle in the air-out direction of air holes 102 and cooking quirk 4
Close better effect.
In order to further increase the effect that flue gas is mixed with Secondary Air, the first wind path 13 and the second wind path 14 can also be set
To protrude from the side wall of cooking quirk 4, and the pass area formed between the two is not less than the sectional area of the chimney 7 of stove.
First wind path 13 and the second wind path 14 can all have the wall surface of oblique lower section, so as to open up air holes 102
In on the wall surface.Multiple air holes 102 can be evenly distributed.
First wind path 13, the second wind path 14 and third wind path 15 can be bent by general steel plate and be realized, product can be used
The leftover bits and pieces that material of main part generates when processing, cost are lower.
The first wind path is arranged in region between extreme higher position that can be coal-fired in the cooking burner and cooking quirk 4 of stove
13 and second wind path 14 can reduce between burning position and cooker in this way, air holes 102 is located on coal-fired extreme higher position
Distance, to improve cooking intensity of fire.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model.It should be pointed out that for the art
For those of ordinary skill, without departing from the principle of this utility model, several change can also be carried out to the utility model
Into and modification, modifications and modifications also fall within the protection scope of the claims of the utility model.