CN203605456U - Coal hot air furnace - Google Patents
Coal hot air furnace Download PDFInfo
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- CN203605456U CN203605456U CN201320819540.3U CN201320819540U CN203605456U CN 203605456 U CN203605456 U CN 203605456U CN 201320819540 U CN201320819540 U CN 201320819540U CN 203605456 U CN203605456 U CN 203605456U
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Abstract
The utility model discloses a coal hot air furnace. The coal hot air furnace comprises a furnace shell. A furnace grate, a combustion chamber on the furnace grate, air inlets formed in the furnace shell and communicated with an air blower and heat exchangers communicated with the combustion chamber are arranged inside the furnace shell. A coal storage chamber is arranged above the combustion chamber. The heat exchangers are arranged in a cavity formed by the furnace shell, the combustion chamber and the coal storage chamber. The air inlets comprise a combustion-supporting air supply opening and an air opening for air conditioning, the combustion-supporting air supply opening comprises a main air supply opening communicated to the portion below the furnace grate of the combustion chamber and an auxiliary air supply opening in the upper portion of the combustion chamber, smoke is exhausted through a smoke exhaust opening after an air outlet of the combustion chamber is communicated to the heat exchangers, and the air opening for air conditioning is communicated with a hot air outlet discharging hot air into a room through the heat exchangers. The coal hot air furnace is compact in overall arrangement and reasonable in design, achieves automatic coaling, saves the human cost, and has the advantages that coal is fully utilized and the heat efficiency is high.
Description
Technical field
The utility model relates to a kind of heating furnace for Workplace heating, is specifically related to the coal-fired hot-blast stove that a kind of coal burning is abundant, heat exchange efficiency is high.
Background technology
The workshop that needs heat supply at some, such as agricultural product Workplaces such as livestock and poultry cultivation workshop, green house of vegetables, for environment temperature being maintained in suitable scope, people install hot-blast stove through this Workplace of being everlasting.Hot-blast stove is a kind of to produce heat by fuel combustion, and by heat transferring medium (normally air) by heat delivery to a kind of firing equipment in production environment.Common hot-blast stove comprises furnace shell, and furnace shell middle part is combustion chamber, is positioned at the top mounting heat exchanger of combustion chamber in furnace shell.Heat exchanger comprises exhaust gases passes and air-conditioner wind passage, and one end of exhaust gases passes is connected with combustion chamber, and the other end reaches the outside of furnace shell; Space between furnace shell and exhaust gases passes forms air-conditioner wind passage, one side of furnace shell is provided for blasting to air-conditioner wind passage the air inlet of cold wind, air inlet place arranges air blast, and the opposite side of furnace shell arranges hot-blast outlet, and cold wind becomes warm braw after absorbing heat in heat exchanger and blows out from hot-blast outlet.When hot-blast stove work, coal burns in combustion chamber as fuel, and the heat that burning produces enters exhaust gases passes with the form of hot flue gas, and circulates in exhaust gases passes; Simultaneously, the cold air at the air inlet place on furnace shell sidewall is blown in furnace shell by blower fan, and in air-conditioner wind passage with exhaust gases passes in hot flue gas carry out heat exchange, the air after heating blows out from the hot-blast outlet of furnace shell, enter into the growing environment of livestock and poultry, vegetables, thus the temperature of adjusting ambient.In production, in order to guarantee the abundant burning of coal, be provided with fire grate in combustion chamber, fire grate below is provided with the combustion-supporting air outlet being connected with air blast.In addition, the top of combustion chamber is provided with coal filling hole, and the bottom of combustion chamber is provided with except cinder notch, so that supplement coal and clear up in time the waste residue that coal burning produces in combustion chamber in time.
Because the heat exchanger structure of traditional hot-blast stove is simple, hot flue gas cannot carry out sufficient heat exchange in exhaust gases passes, remaining heat finally can only be discharged in atmosphere, cause the thermal efficiency of hot-blast stove low, environmental pollution is serious, therefore the exhaust gases passes in heat exchanger has been made S shape or the complicated shape such as Z-shaped by people, to improve the heat exchange efficiency of heat exchanger.But the hot-blast stove after this improvement still has following shortcoming: 1) coal in stove participates in burning immediately after adding, cannot add in advance or store, therefore must arrange special coal workman, regularly or not timing to coal in combustion chamber, the amount of labour is large; 2) add the contact area of block coal in combustion chamber and air to limited, be difficult to sufficient combustion, carbon dust, CO that coal burn incompletely produces can only, with fume emission in environment, both waste coal resources, caused again environmental pollution; 3) because exhaust gases passes is complex-shaped, the dust in exhaust gases passes is easily accumulated on the sidewall of exhaust gases passes, affects the heat exchange efficiency of heat exchanger, and not easy cleaning of dust; 4) stove quantity of heat production within a certain period of time generally can only be controlled by the addition of coal, and the foundation that the addition of coal is not determined, can only rely on coal workman's experience, in the time that coal addition is excessive, easily cause coal burning insufficient, and coal addition is when too small, can cause again quantity of heat production deficiency, cannot guarantee heat supply.
Utility model content
The utility model technical issues that need to address are to provide and a kind ofly can make that coal-fired heat is fully utilized, the coal-fired hot-blast stove of efficient energy-saving, to solve the technical problem that in conventional art, coal utilization is insufficient, heat exchange efficiency is low.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows:
A kind of coal-fired hot-blast stove, comprise furnace shell, in furnace shell, be provided with fire grate and the combustion chamber above fire grate, be arranged on the air inlet being communicated with air blast on furnace shell, the heat exchanger being communicated with combustion chamber, the top of described combustion chamber is provided with the coal storeroom being communicated with combustion chamber, described heat exchanger is arranged in the cavity that furnace shell and combustion chamber, coal storeroom form, described air inlet is divided into combustion-supporting air outlet and air port for air conditioner, and described combustion-supporting air outlet is divided into again the main air outlet of the fire grate below that passes into combustion chamber and is positioned at the inferior air outlet on top, combustion chamber; After the air outlet of combustion chamber is communicated to heat exchanger, warp is discharged by exhaust opening; Described air port for air conditioner is communicated to the hot-blast outlet to indoor thermal wind exhausting through heat exchanger.
Further improvement of the utility model is: on described furnace shell, be provided with the coal filling hole being communicated with coal storeroom top, furnace shell bottom be provided with corresponding with combustion chamber be communicated with except cinder notch, on the furnace shell of the below of the fire grate of combustion chamber, be provided with ash disposal mouth; Described coal filling hole, except on cinder notch, ash disposal mouth, hermatic door is set.
Further improvement of the utility model is: the allocation of the amount of air ratio of described air port for air conditioner and combustion-supporting air outlet is 3:1～10:1.
Further improvement of the utility model is: described heat exchanger is mainly made up of some waveform heat exchanger fins that are arranged in parallel, the ripple heave direction of adjacent heat exchanger fin is consistent, forms successively the exhaust gases passes that passes into flue gas and the air-conditioner wind passage that passes into air between waveform heat exchanger fin; The smoke inlet of described exhaust gases passes is positioned at the bottom of heat exchanger, and the exhanst gas outlet of exhaust gases passes is positioned at the top of heat exchanger, and the air-conditioner wind entrance of described air-conditioner wind passage is positioned at the top of heat exchanger, and the air-conditioner wind outlet of air-conditioner wind passage is positioned at the bottom of heat exchanger.
Further improvement of the utility model is: the smoke inlet of described heat exchanger exhaust gases passes is provided with smoke-intake pipe, on the outer wall of smoke-intake pipe, be provided with some fin A, the air-conditioner wind of the air-conditioner wind passage of heat exchanger exports corresponding smoke-intake pipe and blows out the cavity then forming enter hot-blast outlet between heat exchanger and front and back furnace shell.
Further improvement of the utility model is: the width of described combustion chamber is greater than the width of coal storeroom, on the upper surface of the combustion chamber on coal storeroom side, is welded with high temperature heat sink, and high temperature heat sink is at least two corrugated fin B.
Further improvement of the utility model is: the lower edge of the top coal storeroom of described combustion chamber is to being arranged with the backplate corresponding with the furnace wall of combustion chamber; Combustion chamber is communicated with heat exchanger after the expansion chamber of dust in for separating of hot flue gas through one by the gap between furnace wall and the top of combustion chamber of combustion chamber again.
Further improvement of the utility model is: on described furnace shell, the position of corresponding expansion chamber is provided with dedusting mouth, on dedusting mouth, hermatic door is set.
Further improvement of the utility model is: described coal storeroom top is provided with gas collector; The furnace wall of combustion chamber is provided with the gas burner leading in combustion chamber outward, between gas collector and gas burner, is communicated with by gas conveying tube, and gas burner is also communicated with combustion-supporting air outlet.
Further improvement of the utility model is: described gas burner comprise the gas passage being connected with gas collector and be communicated with combustion-supporting air outlet provide the air duct of air for gas-fired, on described gas passage, be provided with gas exit, on described air duct, be provided with air outlet slit, gas exit and air outlet slit suit are arranged.
Further improvement of the utility model is: the air quantity of described air duct accounts for 40%～80% of combustion-supporting air outlet air quantity.
Further improvement of the utility model is: described air blast is connected with a control device, control device comprises a control air blast running, close and the control instrument of running speed, and described control instrument is connected with for detection of the thermometer of environment temperature with for detection of the hygrometer of ambient humidity.
Further improvement of the utility model is: described furnace shell internal combustion chamber upper surface is provided with hot blast humidifier.
Further improvement of the utility model is: the exit of the hot flue gas of the top heat exchanger of described furnace shell is provided with the water tank for absorbing fume afterheat, and described water tank is connected with hot blast humidifier by water-supply-pipe.
Further improvement of the utility model is: described water-supply-pipe is provided with the humidity control valve being connected with control instrument output.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is as follows:
The utility model compact in design, reasonable in design, by coal storeroom is set above combustion chamber, can improve the automaticity of equipment, when work, only need to guarantee has sufficient coal in coal storeroom, after the coal consumption in combustion chamber, the coal in coal storeroom can fall into combustion chamber automatically, automatically supplements coal, without coal workman timing coal, reduce human cost.The inwall on top, combustion chamber is provided with time air outlet, because coal storeroom is for a long time in sealing state, the air blowing out because of this air outlet can only move downward, therefore both can be for the coal burning in combustion chamber provides combustion air, and can stop again the coal in combustion chamber upwards to burn.
Furnace shell of the present utility model is provided with the coal filling hole being communicated with coal storeroom top, corresponding to combustion chamber cinder notch and ash disposal mouth, and at coal filling hole, except cinder notch, ash disposal mouth, hermatic door is set, and coal, slagging-off easily, the while does not affect the sealing property of furnace shell entirety.
In the utility model, the allocation of the amount of air ratio in air port for air conditioner and combustion-supporting air port is 3:1～10:1, can guarantee to remain on a metastable scope for the air of heat production with for the ratio of the amount of the air that dispels the heat, both the lack of air of can having avoided dispelling the heat causes thermal waste, and the air excess of can avoiding again dispelling the heat causes the waste of energy of blower fan.
Heat exchanger in the utility model is mainly made up of the waveform heat exchanger fin being arranged in parallel, the ripple heave direction of adjacent heat exchanger fin is consistent, this set can be at inner corrugated exhaust gases passes and the air-conditioner wind passage of forming of heat exchanger, increase hot flue gas and cold air perturbation amplitude and the heat exchange area in heat exchanger, thereby improve heat exchange efficiency.
In the utility model, the smoke inlet of the exhaust gases passes of heat exchanger is provided with smoke-intake pipe, the outer wall of smoke-intake pipe is provided with fin A, and fin A both can reduce the temperature of hot flue gas, improves the life-span of smoke-intake pipe, the heat distributing can be passed to air-conditioner wind again, improve heat exchange efficiency.
In the utility model, on the upper surface of combustion chamber, there is high temperature heat sink, high temperature heat sink is at least two wave shaped radiator B, warm braw in heat exchanger after heating flows through in the space of the fin B of high temperature heat sink, can further improve on the one hand the temperature of air-conditioner wind, improve the heat capacity of hot-blast stove, can reduce on the other hand the temperature of sidewall of combustion chamber, improve the life-span of combustion chamber.
In the utility model, between combustion chamber and heat exchanger, be provided with the expansion chamber for separating of dust in hot flue gas, can reduce the dust in hot flue gas, preventing that too much dust is accumulated on heat exchanger inwall affects heat exchange efficiency.On furnace shell, the position of corresponding expansion chamber is provided with dedusting mouth, can the interior dust depositing of periodic cleaning expansion chamber.
In the utility model, coal storeroom top is provided with gas collector, in the furnace wall of combustion chamber, be provided with gas burner, when coal burning in combustion chamber, in coal storeroom, can accumulate some coal gas, these coal gas are transported in gas burner and are burnt by gas conveying tube after gas collector is collected, the utilization rate that has improved coal, has reduced noxious gas emission.
In the utility model, the lower edge of the top coal storeroom of combustion chamber is also to being arranged with the backplate corresponding with the furnace wall of combustion chamber, backplate can prevent that coal from stopping up the outlet of gas burner on the one hand, can make on the other hand the heat that gas-fired produces directly enter heat exchanger through expansion chamber, avoid the loss of distributing of heat.
In the utility model, gas burner comprises the gas passage being connected with gas collector and the air duct being communicated with combustion-supporting air outlet, on gas passage, be evenly equipped with gas exit, on air duct, be evenly equipped with air outlet slit, gas exit and air outlet slit suit are arranged, coal gas with air after gas burner mixes, send in combustion chamber, directly utilize the high temperature in combustion chamber to burn, can realize lighting of coal gas without igniter.
In the utility model, the air quantity of air duct accounts for 40% ~ 80% of combustion-supporting air outlet air quantity, both can meet the clean-burning needs of coal gas, can not affect again the normal air feed of main air outlet and time air outlet.
The utility model is also provided with a measures ambient temperature, humidity, and according to the control device of measurement result control air blast running, control device can regulate automatically according to the temperature of environment the supply of air quantity, has improved automaticity, has reduced human cost.
In the utility model, the upper surface of combustion chamber is provided with hot blast humidifier, in the time that environment is too dry, can regulate the humidity of air-conditioner wind.
In the utility model, the hot smoke outlet of heat exchanger is provided with water tank, and the water in water tank can further absorb fume afterheat, reduces the waste of heat energy, improves energy utilization rate.In the utility model, water tank is connected with hot blast humidifier by water-supply-pipe, and the warm water in water tank after preheating is vaporization rapidly in hot blast humidifier, and steam is transported in environment with hot blast, improves the humidity of environment.
Water-supply-pipe of the present utility model is provided with the humidity control valve being connected with control instrument output, control instrument is by the humidity of hygrometer testing environment, and by the humidity recording compared with setting value, and according to comparative result, humidity control valve is controlled, realized the automation control of humidity.
Accompanying drawing explanation
Fig. 1: the structural representation of a kind of embodiment of the utility model;
The partial sectional view of the left view of Fig. 2: Fig. 1;
Fig. 3: the structural representation of gas burner;
The right view of Fig. 4: Fig. 3;
Fig. 5: the structural representation of heat exchanger.
Wherein: 1. coal storeroom, 11. gas collectors, 12. air outlets, 13. gas conveying tubes, 2. combustion chamber, 20. furnace walls, 21. fire grates, 22. main air outlets, 23. gas burners, 231. gas passage, 232. air duct, 233. gas exit, 234. air outlet slit, 24. backplates, 3. expansion chamber, 4. heat exchanger, 41. heat exchanger fins, 42. exhaust gases passes, 421. smoke-intake pipe, 422. fin A, 43. air-conditioner wind passages, 5. high temperature heat sink, 51. fin B, 6. flue interlayer, 61. exhaust openings, 7. water tank, 71. overflow pipes, 72. filling pipes, 73. hot blast humidifiers, 74. water-supply-pipes, 75. humidity control valves, 8. furnace shell, 81. air inlets, 811. pipeline A, 812. pipeline B, 813. pipeline C, 814. pipeline D, 82. hot-blast outlets, 83. coal filling holes, 84. except cinder notch, 85. ash disposal mouths, 86. dedusting mouths, 9. air blast, 92. control instruments, 93. thermometers, 94. hygrometers.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is done further to describe in detail:
A kind of coal-fired hot-blast stove, as depicted in figs. 1 and 2, comprises furnace shell 8, and the middle part of furnace shell 8 inner chambers is provided with combustion chamber 2, and the middle part of 2 tops, combustion chamber is provided with the coal storeroom 1 being connected with combustion chamber.The width of combustion chamber 2 is greater than the width of coal storeroom 1.The left and right sides of combustion chamber 2 is respectively equipped with an expansion chamber 3, the both sides that the top of expansion chamber 3 is positioned at coal storeroom are respectively equipped with a heat exchanger 4, the below of heat exchanger 4 is provided with the high temperature heat sink 5 connecting as one with the upper side wall of combustion chamber, heat exchanger 4 tops are provided with flue interlayer 6, and the top of flue interlayer 6 is provided with water tank 7.
On the left and right side of hot-air stove shell 8, be respectively equipped with an air inlet 81, air inlet 81 is divided into combustion-supporting air outlet and air port for air conditioner.Combustion-supporting air outlet is used to combustion chamber that combustion air is provided, and air port for air conditioner is used to heat exchanger 4 that air is provided.Hot-blast outlet 82 is set on the trailing flank of furnace shell.Air inlet 81 places are provided with air blast 9, for be blown into air in hot-blast stove.
Combustion chamber 2 is arranged on the below of coal storeroom 1, and is connected with coal storeroom 1.The bottom of combustion chamber 2 is provided with fire grate 21, and the furnace shell front end face that is positioned at fire grate 21 tops is provided with except cinder notch 84, and the furnace shell front end face that is positioned at fire grate 21 belows is provided with ash disposal mouth 85.Remove cinder notch 84 and ash disposal mouth 85 and be provided with hermatic door.Four sidewalls of combustion chamber are provided with furnace wall 20, and the top of left side furnace wall and right side furnace wall is respectively equipped with gas burner 23.The position that 2 tops, combustion chamber are positioned at coal storeroom's lower edge is respectively equipped with backplate 24, the corresponding setting of furnace wall of backplate 24 and the left and right sides, and extend downwardly into gas burner below 23.The structure of described gas burner 23 as shown in Figure 3 and Figure 4, comprises gas passage 231, air duct 232.Gas passage 231 is connected with the gas collector 11 of coal storeroom 1 top by gas conveying tube 13, and air duct 232 is connected with combustion-supporting air outlet by pipeline C 813.On gas passage 231, be provided with several gas exits 233, on air duct 232, be provided with several air outlet slits 234, as preferably, gas exit 233 is evenly arranged on gas passage 231, air outlet slit 234 is evenly arranged on air duct 232, gas exit 233 is tubulose and coaxially arranges with air outlet slit 234, and gas exit 233 is socketed in the inside of air outlet slit 234, and the internal diameter of air outlet slit 234 is greater than the external diameter of gas exit 233.
The below of fire grate 21 is provided with main air outlet 22, and main air outlet 22 is connected by pipeline B 812 with combustion-supporting air outlet.The front side inwall of combustion chamber 2 and the top of rear side inwall are respectively equipped with 5 time air outlets 12, and 5 air outlets on the inwall of front side are oppositely arranged with 5 inferior air outlets on rear side inwall.Inferior air outlet 12 is connected with combustion-supporting air outlet by pipeline A 811.Pipeline A 811 arranges along furnace shell 8 inwalls.
Between combustion chamber 2 left side furnace walls and the top of right side furnace wall and the top of combustion chamber, leave gap, combustion chamber 2 is connected with expansion chamber 3 by the gap between furnace wall 20 and top of combustion chamber.Expansion chamber 3 is cavitys that length dimension and width dimensions are all greater than gap size between furnace wall and top of combustion chamber, be arranged on the both sides of combustion chamber 2, on furnace shell front end face, the position of corresponding expansion chamber 3 is provided with dedusting mouth 86, on dedusting mouth 86, hermatic door is set, hermatic door is for the dust in periodic cleaning expansion chamber.
Heat exchanger 4 has two, is arranged on the top of expansion chamber 3 and lays respectively at the both sides of coal storeroom 1.The structure of heat exchanger 4 as shown in Figure 5, comprises 14 waveform heat exchanger fins 41 that are arranged in parallel, and the ripple heave direction of adjacent heat exchanger fin is consistent, forms successively corrugated exhaust gases passes 42 and corrugated air-conditioner wind passage 43 between waveform heat exchanger fin.On the steel plate of each exhaust gases passes 42 lower surfaces, offer two smoke inlets, offer two exhanst gas outlets on the steel plate of each exhaust gases passes 42 upper surfaces, other positions of exhaust gases passes seal with steel plate.Smoke inlet is connected with expansion chamber by smoke-intake pipe 421, and the hot flue gas in expansion chamber can enter by smoke-intake pipe 421 exhaust gases passes 42 of heat exchanger 4, and moves from bottom to top along corrugated exhaust gases passes.Offer air-conditioner wind entrance on the top of each air-conditioner wind passage, offer air-conditioner wind outlet in each air-conditioner wind passage bottom, other positions of air-conditioner wind passage seal with steel plate.The air-conditioner wind entrance of air-conditioner wind passage is connected with air port for air conditioner by the space between heat exchanger and furnace shell and pipeline D 814.Cold air in environment enters air-conditioner wind passage from air-conditioner wind entrance, and moves from top to bottom along waveform air-conditioner wind passage, after heat exchange, flows out from air-conditioner wind outlet.Because exhaust gases passes and air-conditioner wind passage are waveform, therefore hot flue gas and cold air can carry out sufficient heat exchange.
On the excircle of smoke-intake pipe 421, be welded with laminar fin A 422, combustion chamber is welded with high temperature heat sink 5 on 2 upper surfaces, high temperature heat sink 5 comprises 9 fin B 51, fin B 51 is corrugated heat resisting steel thin slice, 9 fin B 51 are arranged in parallel, and the heave direction of fin B is consistent.The air-conditioner wind outlet from air-conditioner wind channel bottom after heat exchange of the air of heat exchanger air conditioner wind passage blows out, through fin A 422 and high temperature heat sink 5, can reduce on the one hand the temperature of fin B, smoke-intake pipe 421 and sidewall of combustion chamber, improve the life-span of smoke-intake pipe and combustion chamber, on the other hand, air in air-conditioner wind passage further utilizes the heat of coal burning to heat up herein, improves the temperature of hot blast.Gap between gap between heat exchanger 4 and combustion chamber 2 and heat exchanger 4 and expansion chamber 3 also seals with steel plate, only on rear wall, offers a through hole, and through hole is connected with the hot-blast outlet 82 on furnace shell by the cavity between heat exchanger and furnace shell.The hot blast blowing out in air-conditioner wind passage is after fin A and high temperature heat sink, and the hot-blast outlet 82 from hot-air stove shell rear end face blows out, and is transported in the place of plantation or cultivation, improves environment temperature.
The top of heat exchanger is provided with flue interlayer 6, and the exhanst gas outlet on exhaust gases passes 42 tops of heat exchanger 4 is connected with flue interlayer 6.The upper surface at the middle part of flue interlayer 6 is provided with exhaust opening 61.The top of flue interlayer is also provided with water tank 7, and the fume afterheat that water tank can absorb in flue interlayer, for the water heating in water tank 7, both can reduces the flue-gas temperature that exhaust opening 61 is discharged, and can be again the water preheat in water tank.Complete the later hot flue gas of heat exchange through flue interlayer 6, be discharged to stove from exhaust opening 61.The sidewall of water tank is provided with filling pipe 72, and filling pipe 72 is connected with water source, is used to water tank supplementing water.On upper surface, combustion chamber, be fixedly installed hot blast humidifier 73, hot blast humidifier 73 is rectangular steel tubes.Hot blast humidifier is connected with the filling pipe 72 of water tank by water-supply-pipe 74.One end near filling pipe on water-supply-pipe is provided with humidity control valve 75.The upper surface of water tank is provided with overflow pipe 71, in the time that the coolant-temperature gage in water tank is higher, can produce a large amount of steam, and these steam are discharged to water tank outside by overflow pipe, can avoid that water tank internal gas pressure is too high causes overflowing of water.
Described furnace shell outside is also provided with control device, and control device comprises control instrument 92, can set the environment temperature and the ambient humidity that need on control instrument 92.The input of control instrument is connected with for detection of the thermometer 93 of environment temperature and for detection of the hygrometer 94 of ambient humidity, and the output of control instrument is connected with humidity control valve 75 with air blast 9 respectively, and air blast 9 is frequency conversion fans.When the ambient humidity detecting when hygrometer 94 is less than the humidity of setting, humidity control valve 75 is opened, water in water tank flows in hot blast humidifier 73 by water-supply-pipe, because hot blast humidifier 73 is arranged on the upper surface of combustion chamber, therefore in hot blast humidifier, temperature is very high, water in water-supply-pipe flows to the vaporization rapidly later of hot blast humidifier, thereby increases the humidity of hot blast.In the time that thermometer detects that environment temperature is less than the environment temperature of setting, air blast 9 rotating speeds increase, and improve combustion air and the amount for the air of heat conduction, thereby increase the temperature of environment.In the time that thermometer detects that environment temperature is more than or equal to the environment temperature of setting, air blast 9 rotating speeds reduce even stall, and combustion air and the air for heat conduction reduce or stop supplies simultaneously like this, make coal burning Speed Reduction.So neither can cause the waste of coal, also can not cause the waste of blower fan electric energy.
When work, air blast 9 is blown into the cold air in environment in hot-blast stove, the cold air entering in hot-blast stove by air inlet 81 is divided into four strands: 1) spray at inferior air outlet 12 places by combustion-supporting air outlet and pipeline A 811, blow on the one hand the expansion chamber of both sides, combustion chamber for the hot flue gas that coal burning in combustion chamber is produced, on the other hand for the flame that hinders combustion chamber to vertical spread, the coal of avoiding igniting in coal storeroom; 2) spray at main air outlet 22 places by combustion-supporting air outlet and pipeline B 812, be used to the coal burning in combustion chamber that sufficient oxygen is provided; 3) the air outlet slit 234 places ejection at gas burner by combustion-supporting air outlet and pipeline C 813, for mixing with coal gas and making gas-fired; 4) be connected with the air-conditioner wind passage of heat exchanger by air port for air conditioner and pipeline D 814, this part air enters the air-conditioner wind passage 43 of heat exchanger from the air-conditioner wind entrance of heat exchanger, in air-conditioner wind passage with heat exchanger in hot flue gas carry out heat exchange, then spray from the air-conditioner wind exit of heat exchanger below, in fin A 422 and high temperature heat sink 5, further heating, then blows in environment as hot blast.
In the utility model, the allocation of the amount of air ratio of air port for air conditioner and combustion-supporting air outlet is 3:1～10:1, can be the ratio of 3:1,4:1,5:1,6:1,7:1,8:1,9:1,10:1 or approximate these numerical value.The air quantity of the air duct 232 of gas burner 23 accounts for 40%～80% of combustion-supporting air outlet air quantity, as preferably, can make pipeline A 811 is 1:1:2 to air quantity, the pipeline C 813 of main air outlet 22 to the ratio of the air quantity of the air outlet slit 234 of gas burner to air quantity, the pipeline B 812 of time air outlet 12.Like this, when air blast is when being blown into air in hot-blast stove, will remain in a metastable scope for combustion-supporting air with for the ratio of the volume of the air of heat conduction.The heat producing due to the certain combustion air of every consumption is substantially constant, and the amount of taking away the air that these caloric requirements consume is also substantially constant, and therefore, the heat of generation and the heat of taking away can keep a basic balance.The coal gas that coal produces also can be fully burned, and produces maximum heat with minimum coal.
Coal joins in coal storeroom from coal filling hole 83, and along with the continuous burning of below coal, the coal in coal storeroom can slowly be fallen in combustion chamber, therefore, and in the situation that guaranteeing that in coal storeroom, coal is enough, without hand firing.Coal is after coal storeroom enters combustion chamber, in combustion chamber under the effect of high temperature, first can become dry, then there is destructive distillation pyrolysis, produce the products such as coal gas, tar, semicoke, the tar, the semicoke fully burning after combustion-supporting air outlet oxygen supply in combustion chamber that produce, the coal gas of generation fully burns at gas burner place after gas collector is collected.This combustion system, for direct burning solid coal, burns more abundant, and coal utilizaton rate is higher, and the pernicious gas producing still less.
When coal burning, because the inferior air outlet air pressure of coal storeroom bottom is high, the expansion chamber air pressure being connected with combustion chamber lower simultaneously, therefore the hot flue gas that coal burning produces can flow to expansion chamber by the gap at the furnace wall of combustion chamber and top, because expansion chamber 3 is the cavitys that cross section is larger, therefore hot flue gas flow velocity in expansion chamber can reduce, and the dust in flue gas can be deposited to the bottom of expansion chamber.On furnace shell, be provided with dedusting mouth 86 corresponding to the position of expansion chamber, when Dust Capacity in expansion chamber accumulates when more, can open dedusting mouth, dust is taken out and processed.Coal filling hole of the present utility model, except cinder notch, ash disposal mouth, dedusting mouth all seal in not using, prevent that cold air from entering in stove.Hot flue gas after expansion chamber enters by smoke-intake pipe 421 in the exhaust gases passes 42 of heat exchanger, because exhaust gases passes 42 and the air-conditioner wind passage 43 of heat exchanger 4 inside are waveform, therefore hot flue gas and cold air can carry out sufficient heat exchange, complete heat exchange in heat exchanger after, hot flue gas enters in flue interlayer 6 by exhanst gas outlet, waste heat in flue gas further with the water tank 7 of flue interlayer top in water carry out heat exchange, with after emit through exhaust opening 61.
In the present embodiment; except control instrument; the all parts of hot-blast stove is and is symmetrically arranged; more compact and reasonable of this arrangement; can be according to actual needs in production; also can select not adopt symmetrical arrangement, any arrangement form that comprises all technical characteristic in the utility model claim is all within protection domain of the present utility model.
Claims (15)
1. a coal-fired hot-blast stove, comprise furnace shell (8), in furnace shell (8), be provided with fire grate (21) and the combustion chamber above fire grate (2), be arranged on the air inlet being communicated with air blast (81) on furnace shell (8), the heat exchanger (4) being communicated with combustion chamber (2), it is characterized in that:
The top of described combustion chamber (2) is provided with the coal storeroom (1) being communicated with combustion chamber (2), described heat exchanger (4) is arranged in the cavity that furnace shell (8) and combustion chamber (2), coal storeroom (1) form, described air inlet is divided into combustion-supporting air outlet and air port for air conditioner, and described combustion-supporting air outlet is divided into again the main air outlet (22) of the fire grate below that passes into combustion chamber (2) and is positioned at the inferior air outlet (12) on top, combustion chamber (2); The air outlet of combustion chamber (2) is communicated to heat exchanger (4) by being discharged by exhaust opening (61); Described air port for air conditioner is communicated to the hot-blast outlet (82) to indoor thermal wind exhausting through heat exchanger (4).
2. a kind of coal-fired hot-blast stove according to claim 1, it is characterized in that: on described furnace shell (8), be provided with the coal filling hole (83) being communicated with coal storeroom (1) top, furnace shell (8) bottom be provided with corresponding with combustion chamber (2) be communicated with except cinder notch (84), on the furnace shell (8) of the below of the fire grate (21) of combustion chamber (2), be provided with ash disposal mouth (85); Described coal filling hole (83), on (85), hermatic door is set except cinder notch (84), ash disposal mouth.
3. a kind of coal-fired hot-blast stove according to claim 1, is characterized in that: the allocation of the amount of air ratio of described air port for air conditioner and combustion-supporting air outlet is 3:1～10:1.
4. a kind of coal-fired hot-blast stove according to claim 1, it is characterized in that: described heat exchanger (4) is mainly made up of some waveform heat exchanger fins (41) that are arranged in parallel, the ripple heave direction of adjacent heat exchanger fin (41) is consistent, forms successively the air-conditioner wind passage (43) that passes into the exhaust gases passes (42) of flue gas and pass into air between waveform heat exchanger fin (41); The smoke inlet of described exhaust gases passes is positioned at the bottom of heat exchanger (4), the exhanst gas outlet of exhaust gases passes is positioned at the top of heat exchanger (4), the air-conditioner wind entrance of described air-conditioner wind passage is positioned at the top of heat exchanger (4), and the air-conditioner wind outlet of air-conditioner wind passage is positioned at the bottom of heat exchanger (4).
5. a kind of coal-fired hot-blast stove according to claim 4, it is characterized in that: the smoke inlet of described heat exchanger (4) exhaust gases passes is provided with smoke-intake pipe (421), on the outer wall of smoke-intake pipe (421), be provided with some fin A(422), the air-conditioner wind of the air-conditioner wind passage of heat exchanger (4) exports corresponding smoke-intake pipe (421) and blows out then the cavity forming enter hot-blast outlet (82) between heat exchanger (4) and front and back furnace shell (8).
6. a kind of coal-fired hot-blast stove according to claim 4, it is characterized in that: the width of described combustion chamber (2) is greater than the width of coal storeroom (1), on the upper surface of the combustion chamber (2) on coal storeroom (1) side, be welded with high temperature heat sink (5), high temperature heat sink (5) is at least two corrugated fin B(51).
7. according to a kind of coal-fired hot-blast stove described in claim 1～6 any one, it is characterized in that: the lower edge of the top coal storeroom (1) of described combustion chamber (2) is to being arranged with the backplate (24) corresponding with the furnace wall (20) of combustion chamber (2); Combustion chamber (2) is communicated with heat exchanger (4) after the expansion chamber (3) of dust in for separating of hot flue gas through one by the gap between furnace wall (20) and the top, combustion chamber (2) of combustion chamber (2) again.
8. a kind of coal-fired hot-blast stove according to claim 7, is characterized in that: on described furnace shell, the position of corresponding expansion chamber (3) is provided with dedusting mouth (86), and dedusting mouth arranges hermatic door on (86).
9. a kind of coal-fired hot-blast stove according to claim 1, is characterized in that: described coal storeroom (1) top is provided with gas collector (11); The outer gas burner (23) leading in combustion chamber (2) that is provided with of furnace wall (20) of combustion chamber (2), between gas collector (11) and gas burner (23), be communicated with by gas conveying tube (13), gas burner (23) is also communicated with combustion-supporting air outlet.
10. a kind of coal-fired hot-blast stove according to claim 9, it is characterized in that: described gas burner (23) comprise the gas passage (231) being connected with gas collector (11) and be communicated with combustion-supporting air outlet provide the air duct (232) of air for gas-fired, on described gas passage, be provided with gas exit (233), on described air duct, be provided with air outlet slit (234), gas exit (233) is arranged with air outlet slit (234) suit.
11. a kind of coal-fired hot-blast stoves according to claim 10, is characterized in that: the air quantity of described air duct (232) accounts for 40%～80% of combustion-supporting air outlet air quantity.
12. a kind of coal-fired hot-blast stoves according to claim 1, it is characterized in that: described air blast (9) is connected with a control device, control device comprises that a control air blast (9) turns round, cuts out and the control instrument (92) of running speed, and described control instrument (92) is connected with thermometer (93) for detection of environment temperature and the hygrometer (94) for detection of ambient humidity.
13. according to a kind of coal-fired hot-blast stove described in claim 1 or 12 any one, it is characterized in that: described furnace shell (8) internal combustion chamber upper surface is provided with hot blast humidifier (73).
14. a kind of coal-fired hot-blast stoves according to claim 13, it is characterized in that: the exit of the hot flue gas of the top heat exchanger (4) of described furnace shell (8) is provided with the water tank (7) for absorbing fume afterheat, described water tank is connected with hot blast humidifier (73) by water-supply-pipe (74).
15. a kind of coal-fired hot-blast stoves according to claim 14, is characterized in that: described water-supply-pipe (74) is provided with the humidity control valve (75) being connected with control instrument (92) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819540.3U CN203605456U (en) | 2013-12-13 | 2013-12-13 | Coal hot air furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819540.3U CN203605456U (en) | 2013-12-13 | 2013-12-13 | Coal hot air furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203605456U true CN203605456U (en) | 2014-05-21 |
Family
ID=50718126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320819540.3U Withdrawn - After Issue CN203605456U (en) | 2013-12-13 | 2013-12-13 | Coal hot air furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203605456U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629813A (en) * | 2013-12-13 | 2014-03-12 | 新乐非凡供暖设备有限公司 | Coal hot air furnace |
| CN104596099A (en) * | 2015-01-27 | 2015-05-06 | 宁波高新区科莱尔节能设备有限公司 | Hot blast stove |
| CN109458734A (en) * | 2018-10-31 | 2019-03-12 | 谢震东 | A kind of energy saving and environment friendly coal-fired hot-blast stove |
-
2013
- 2013-12-13 CN CN201320819540.3U patent/CN203605456U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629813A (en) * | 2013-12-13 | 2014-03-12 | 新乐非凡供暖设备有限公司 | Coal hot air furnace |
| CN103629813B (en) * | 2013-12-13 | 2016-08-17 | 新乐非凡供暖设备有限公司 | A kind of coal-fired hot-blast stove |
| CN104596099A (en) * | 2015-01-27 | 2015-05-06 | 宁波高新区科莱尔节能设备有限公司 | Hot blast stove |
| CN104596099B (en) * | 2015-01-27 | 2017-04-05 | 宁波高新区科莱尔节能设备有限公司 | A kind of hot-blast stove |
| CN109458734A (en) * | 2018-10-31 | 2019-03-12 | 谢震东 | A kind of energy saving and environment friendly coal-fired hot-blast stove |
| CN109458734B (en) * | 2018-10-31 | 2020-11-10 | 乐清旭耀科技有限公司 | Energy-saving environment-friendly coal-fired hot-blast stove |
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