CN119222786A - A spiral plate type internal combustion high-efficiency hot air stove and use method - Google Patents
A spiral plate type internal combustion high-efficiency hot air stove and use method Download PDFInfo
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- CN119222786A CN119222786A CN202411333657.XA CN202411333657A CN119222786A CN 119222786 A CN119222786 A CN 119222786A CN 202411333657 A CN202411333657 A CN 202411333657A CN 119222786 A CN119222786 A CN 119222786A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 197
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims description 45
- 230000007246 mechanism Effects 0.000 claims description 26
- 239000002028 Biomass Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000012774 insulation material Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 44
- 239000000779 smoke Substances 0.000 description 14
- 239000010410 layer Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/067—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using solid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L1/00—Passages or apertures for delivering primary air for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/04—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by spirally-wound plates or laminae
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
本发明公开了一种螺旋板式的内燃高效热风炉及使用方法，涉及热风炉技术领域，该炉包括炉本体，炉本体内设置有燃烧室和螺旋板式换热器，该换热器是一个围绕炉本体的中轴线呈现螺旋式层层分布的板式结构，该板式结构分为热风空腔部分和新风空腔部分，通过新风空腔的新冷风与通过热风空腔的燃烧尾气进行换热，该热风炉将燃烧室和换热器无缝衍接设计为一体，采用螺旋式结构的平行板式换热方式，整个换热过程冷热风逆流运行，冷风平衡渐进加热，热风平衡渐次放热，整个换热过程冷热风流动无湍流，热量全方位利用，热效高、能耗低、运行稳定、自动化程度高，且燃烧尾气从燃烧室经过螺旋板式换热器分散排放至大气中，温度也很低，安全且环保，该热风炉实用性强。
The invention discloses a spiral plate type internal combustion high-efficiency hot blast furnace and a use method, and relates to the technical field of hot blast furnaces. The furnace comprises a furnace body, wherein a combustion chamber and a spiral plate heat exchanger are arranged in the furnace body, wherein the heat exchanger is a plate structure that is spirally distributed in layers around the central axis of the furnace body, wherein the plate structure is divided into a hot blast cavity part and a fresh blast cavity part, wherein the new cold blast through the fresh blast cavity exchanges heat with the combustion exhaust gas through the hot blast cavity, wherein the hot blast furnace seamlessly connects the combustion chamber and the heat exchanger as one, and adopts a parallel plate heat exchange method with a spiral structure, wherein the cold and hot blasts run in countercurrent during the whole heat exchange process, the cold blast is gradually heated in a balanced manner, and the hot blast is gradually released in a balanced manner, wherein the cold and hot blasts flow without turbulence during the whole heat exchange process, and the heat is utilized in all directions, the thermal efficiency is high, the energy consumption is low, the operation is stable, and the automation degree is high, and the combustion exhaust gas is dispersedly discharged into the atmosphere from the combustion chamber through the spiral plate heat exchanger, and the temperature is also very low, and the hot blast furnace is safe and environmentally friendly, and the hot blast furnace is highly practical.
Description
The application relates to a spiral plate type internal combustion high-efficiency hot-blast stove, which is divided into application number 24 and application number CN202010722900.2, wherein the application date of the original application is 7 months in 2020.
Technical Field
The invention relates to the technical field of hot blast stoves, in particular to a spiral plate type internal combustion high-efficiency hot blast stove and a use method thereof.
Background
The hot blast stove has wide application in the production and life of people, the working mode is the heat released by fuel combustion, the air is heated by high-temperature flue gas, so that the temperature of the air reaches the use standard, the hot blast stove is used in the fields of life heating, industrial production, heat curing, grain drying and the like, along with the development and progress of society, people pay more and more attention to the environment, the fuel of the traditional hot blast stove is gradually replaced by biomass fuel, the biomass hot blast stove takes biomass as the fuel, the generated harmful gas is less than the traditional fuel, and the environmental protection problem is also solved by the biomass fuel utilization per se.
The type of the hot blast stove is mainly divided into an internal combustion type, an external combustion type and a top combustion type, the whole structure of the hot blast stove can be divided into two parts, one part is a combustion chamber and is a fuel combustion heat generating part, the other part is a heat exchanger, the other part is a structural device for carrying out heat exchange between heat carried by high-temperature gas generated by the combustion chamber and external fresh air, the external fresh air with lower temperature is heated to form hot air after heat exchange is carried out between the external fresh air and high-temperature flue gas generated by the combustion chamber in the heat exchanger.
At present, the biomass hot blast stove is mainly characterized in that a hearth is connected with a smoke pipe as a heating source, a heated air interlayer is arranged around the hearth and the smoke exhaust pipe, high-temperature gas generated by a combustion chamber flows in the smoke pipe in a gas stream mode, heat is emitted through the outer surface of the smoke pipe, central jet flow and surface flow velocity of the cylindrical gas stream in the smoke pipe are inconsistent, the central jet flow and the heat on the outer surface cannot uniformly emit, part of the heat is brought by the central jet flow higher than the surface flow velocity, the heat is discharged out of the stove along with tail gas after being fully absorbed, the heat is absorbed through the surface of the smoke pipe, the heat radiating area is small, the heat exchanging smoke pipe of a heat exchanging structure is perpendicular to the wind direction of fresh air, turbulence is easy to generate on the leeside of the smoke pipe and the part for resisting the gas stream, the fresh air wind resistance is large, the heat exchanging is uneven, the heat exchanging is incomplete, and the friction wind resistance loss is severe. The temperature of the discharged smoke is also higher, so that the heat exchange and heat energy utilization efficiency is lower, and the environmental pollution is larger.
Disclosure of Invention
The invention aims to solve the technical problems of small smoke return number, small heat exchange area, short heat exchange time, uneven heat exchange, high smoke discharge temperature, low heat exchange efficiency between smoke and fresh air, high fresh air wind resistance and friction loss of the hot air furnace.
The invention adopts the following technical scheme:
the invention provides a spiral plate type internal combustion high-efficiency hot blast stove which comprises a stove body, wherein a combustion chamber and a spiral plate type heat exchanger are arranged in the stove body, the combustion chamber is arranged at the center of the bottom of the stove body, the spiral plate type heat exchanger is arranged at the periphery above the combustion chamber, and the combustion chamber and the spiral plate type heat exchanger are connected into a whole;
The spiral plate type heat exchanger is in a spiral plate type structure distributed layer by layer around the central axis of the furnace body, the spiral plate type heat exchanger comprises a plurality of hot air cavities and fresh air cavities which are alternately arranged, the spiral plate type heat exchanger further comprises a new hot air outlet, a combustion tail gas outlet and a new cold air inlet, and the new hot air outlet, the combustion tail gas outlet and the new cold air inlet are all arranged on the side wall of the furnace body;
the fresh air inlet, the fresh air cavity and the fresh air outlet are sequentially communicated to form a fresh air channel;
The combustion chamber, the hot air cavity and the combustion tail gas air outlet are sequentially communicated to form a hot air channel.
Preferably, the bottom of the hot air cavity is provided with an ash collecting bin which is communicated with an ash removing opening in a layered mode, and the ash removing opening is arranged on the side wall of the furnace body.
The top of the furnace body is provided with a detachable heat insulation inner container overhaul top cover right above the conical return fire port at the top, and the bottom of the detachable heat insulation inner container overhaul top cover is provided with a heat insulation material.
Preferably, a combustion-supporting mechanism is arranged at the bottom of the combustion chamber and comprises a combustion-supporting air inlet of the combustion chamber, a combustion-supporting blower of the combustion chamber, a combustion-supporting bellows and an air quantity regulating valve;
A fuel grate is arranged between the combustion chamber and the combustion-supporting bellows, and the air speed of the combustion-supporting blower of the combustion chamber is adjustable.
Preferably, the bottom of the combustion chamber is provided with an ash removal mechanism, the ash removal mechanism comprises a combustion chamber ash removal port and a combustion chamber ash removal channel, and the combustion chamber ash removal port is communicated with the combustion chamber through the combustion chamber ash removal channel.
Preferably, a fuel hopper is arranged on the side edge of the furnace body, a fuel discharging mechanism is arranged below the fuel hopper, and the fuel discharging mechanism is communicated with the combustion chamber through a throwing inclined pipe.
Preferably, the side wall of the furnace body is also provided with an ignition port and a fire viewing furnace door.
The invention also provides a using method of the spiral plate type internal combustion high-efficiency hot blast stove, which comprises the following working processes that biomass fuel is added into a bottom combustion chamber of a stove body through a fuel blanking mechanism by a fuel hopper, combustion air is introduced into the combustion chamber through a combustion air inlet by a combustion air blower, ignition is carried out through an ignition port arranged on the side wall of the stove body, combustion tail gas is generated by starting combustion of the combustion chamber, when the combustion tail gas reaches a certain temperature, a fresh cold air inlet fan sends fresh cold air into the stove body through a fresh air inlet, the fresh cold air moves and diffuses round by round along a fresh air cavity of a spiral plate type structure of the spiral plate type heat exchanger to the center of the stove body, meanwhile, combustion tail gas emitted upwards by the combustion chamber is folded back and downwards dispersed into the hot air cavity of the spiral plate type structure of the spiral plate type heat exchanger at a fire return port, and the combustion tail gas diffuses round by round to the outside of the stove body from the center of the stove body;
The new cold air exchanges heat with the combustion tail gas in the hot air cavity in the process of diffusing the new cold air to the center of the furnace body in a circle along the new air cavity, the new cold air is heated through heat exchange to form hot air, and finally the hot air is discharged from a new hot air outlet;
particulate matters carried by the combustion tail gas are deposited in the ash collecting bin for a period of time under the action of gravity, ash can be removed through the ash removing opening, and the residual ash in the combustion chamber can be discharged through the ash removing opening.
Compared with the prior art, the invention has the beneficial technical effects that:
Compared with the prior art, the invention provides the internal combustion high-efficiency hot blast stove adopting the spiral plate type heat exchange mode, the design of the spiral plate type structure solves the problems of low heat exchange and heat energy utilization efficiency caused by the fact that energy is discharged out of the stove due to insufficient utilization of jet flow because the internal structure of the stove is simple, the flame stroke is short, the heat dissipation area is small, and the heat dissipation is unbalanced, and solves the problems of high temperature of discharged combustion smoke, large environmental pollution caused by a plurality of particles in tail wind, and further solves the problems of turbulence, large fresh air resistance, unbalanced absorption and heat dissipation and severe friction loss caused by the fact that the heat exchange smoke pipe of the heat exchange structure is perpendicular to the fresh air direction.
According to the technical scheme provided by the invention, the combustion chamber of the hot blast stove and the heat exchanger are integrated into a whole through seamless diffraction, the heat exchanger structure is skillfully designed, cold and hot air flow in the whole heat exchange process is in countercurrent operation, heat is comprehensively utilized, cold air in the whole heat exchange process is balanced and gradually heated, hot air is balanced and gradually released, combustion tail gas is pressed into flat shape by a clearance air duct, jet flow and turbulence are avoided, when new cold air and combustion hot air pass through the spiral plate type heat exchanger, the directions of air flow are opposite countercurrent and parallel, and the purposes of no turbulence, high heat efficiency, low energy consumption, stable operation, low temperature and environment friendliness are achieved.
In the technical scheme provided by the invention, the automatic constant-temperature operation is realized by automatically sampling and comparing the fuel supply quantity of the combustion chamber and the supply quantity of the combustion-supporting cold air controlled by the output level of the controller.
The invention provides a novel hot-blast stove which integrates a combustion chamber and a heat exchanger of the hot-blast stove into a whole in a seamless diffraction way, takes biomass fuel as an energy source, adopts a parallel plate type heat exchange mode of a spiral structure and runs in a cold-hot air countercurrent way.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a top view of a spiral plate type internal combustion high efficiency hot blast stove according to an embodiment of the present invention;
FIG. 2 is a front view of a spiral plate type internal combustion high efficiency hot blast stove according to an embodiment of the present invention;
FIG. 3 is a left side view of a spiral plate type internal combustion high efficiency hot blast stove according to an embodiment of the present invention;
FIG. 4 is a rear view of a spiral plate type internal combustion high efficiency hot blast stove according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 7 is a sectional view of fig. 5 taken along the line C-C and also shows a top view of the spiral plate heat exchanger.
The reference numerals are 1-furnace body, 2-fire viewing furnace door, 3-combustion chamber ash removal port, 4-ignition port, 5-ash removal port, 6-new hot air outlet, 7-combustion tail gas outlet, 8-tail gas exhaust fan, 9-new cold air inlet, 10-new cold air inlet fan, 11-combustion chamber combustion-supporting air inlet, 12-combustion chamber combustion-supporting blower, 13-detachable heat insulation inner container maintenance top cover, 14-lifting lug, 15-fuel funnel, 16-fuel blanking mechanism, 17-driven sprocket, 18-driving sprocket, 19-driving chain, 20-throwing chute, 21-combustion-supporting bellows, 22-fire viewing channel, 23-combustion chamber ash removal channel, 24-fuel grate, 25-electronic ignition bar, 26-ignition bar sleeve, 27-combustion chamber, 28-ash collection bin, 29-hot air cavity, 30-new air cavity, 31-heat insulation material, 32-spiral plate heat exchanger, 33-combustion tail gas flow direction, 34-combustion tail gas flow direction, 35-fire flow path, 36-flow direction, 37-conical air return port, 38-conical air quantity regulating valve.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments.
Example 1
As shown in fig. 1 to 7, in this embodiment, a spiral plate type heat exchange internal combustion efficient hot blast stove is disclosed, the stove includes a stove body 1, a combustion chamber 27 and a spiral plate type heat exchanger 32 are arranged in the stove body, the combustion chamber 27 and the spiral plate type heat exchanger 32 are integrated into a whole in a seamless diffraction manner, the combustion chamber 27 is arranged at the bottom center of the stove body 1, a combustion supporting mechanism is arranged at the bottom of the combustion chamber 27, the combustion supporting mechanism includes a combustion chamber combustion supporting air inlet 11, a combustion chamber combustion supporting blower 12, a combustion supporting bellows 21 and an air quantity regulating valve 38, combustion supporting air is introduced into the combustion chamber 27 through the combustion supporting air inlet 11 through the combustion supporting mechanism so as to facilitate fuel combustion in the combustion chamber 27, the combustion supporting cold air blower 1 is adjustable in speed, a new hot air outlet 6 is arranged at a position opposite to the combustion supporting air inlet 11 and at the side wall of the stove body 1, a direct combustion chamber ignition port 4 is further arranged on the side wall of the stove body 1, an ignition mechanism is arranged at the bottom of the combustion chamber 27 through an ignition port, the combustion furnace door 25 is used for igniting, the side wall of the stove body is further provided with an ignition door 2, and the combustion chamber 2 is observed through the ignition door 2 and the fire door 27. An ash removing mechanism is further arranged at the bottom of the combustion chamber 27 and on the side face of the combustion-supporting air box 21, the ash removing mechanism comprises a combustion chamber ash removing opening 3 and a combustion chamber ash removing channel 23, residues of the combustion chamber 27 are discharged out of the furnace body through the ash removing mechanism, and a fuel grate 24 is further arranged between the combustion chamber 27 and the combustion-supporting air box 21.
The side of the furnace body 1 is also provided with a fuel hopper 15 for containing biomass fuel, a fuel discharging mechanism 16 capable of controlling the fuel addition is arranged below the fuel hopper 15, the discharging mechanism 16 comprises a driving sprocket 18, a driven sprocket 17, a driving chain 19 and a throwing inclined tube 20, the biomass fuel in the fuel hopper 15 is added into a combustion chamber 27 for combustion through the fuel discharging mechanism, and the discharging amount of the fuel discharging mechanism 15 can be controlled to be regulated by a motor.
The spiral plate type heat exchanger 32 is arranged on the periphery of the upper portion of the combustion chamber 27, a conical fire return opening 37 is formed in the top of the spiral plate type heat exchanger 32, a heat insulation material 31 is arranged on the top of the heat exchanger 32 and below the detachable heat insulation liner overhaul top cover 13, the spiral plate type heat exchanger 32 is respectively provided with a fresh air inlet 9 and a combustion tail gas outlet 7, the fresh air inlet 9 and the combustion tail gas outlet 7 are respectively arranged on the side wall of the furnace body 1, and the combustion tail gas outlet 7 is arranged above the fresh air inlet 9.
The structure of the spiral plate type heat exchanger 32 is a plate type structure which is spirally distributed layer by layer around the central axis of the furnace body 1, the plate type structure is divided into a hot air cavity 29 and a fresh air cavity 30, the hot air cavity 29, the fresh air cavity 30 and the central axis of the combustion chamber 27 are arranged in parallel, an ash collecting bin 28 is arranged at the bottom of the hot air cavity 29, and the ash collecting bin 28 of the heat exchanger is communicated with the ash removing opening 5 of the heat exchanger in a layered mode. The fresh air cavity 30, the fresh air outlet 6 and the fresh air inlet 9 are mutually communicated, the combustion tail gas generated by the combustion chamber 27 enters the hot air cavity 29 from the spiral plate type heat exchanger 32, flows outwards in a circle and layer by layer along the combustion tail gas flow direction 34 and the combustion tail gas flow path 33, finally is discharged from the combustion tail gas outlet 7, fresh air is introduced from the outside of the heat exchanger 32, fresh air enters the fresh air cavity 30 of the spiral plate type heat exchanger 32 through the fresh air inlet 9, flows inwards in a circle and layer by layer along the fresh air flow direction 36 and the fresh air flow path 35, finally is discharged downwards from the fresh air outlet 6 around the outer wall of the combustion chamber 27, the hot air cavity 29 and the fresh air cavity 30 of the spiral plate type heat exchanger 32 are designed to be narrower, the purpose is to press the combustion tail gas and the fresh air into a flat shape which is more beneficial to heat dissipation and absorption, the process is the heat exchange process of the new cold air and the combustion exhaust, the design of the spiral plate type heat exchanger 32 provides a sufficient heat exchange area and heat exchange time for heat energy transfer of the new cold air and the combustion exhaust, the hot air cavity 29 and the fresh air cavity 30 of the spiral plate type heat exchanger 32 press wind into a plane rectangle, the whole structural design is ingenious, the combustion chamber of the hot air furnace and the heat exchanger are seamlessly and derivative-connected and integrated into a whole, the whole heat exchange process carries out countercurrent operation on cold and hot air, the heat is utilized in all directions, the cold air is heated progressively in balance, the hot air flows without turbulence, the heat efficiency is high, the exhaust temperature is low, the energy consumption is low, the operation is stable, the degree of automation is high, and the combustion exhaust is discharged from the combustion chamber to the atmosphere through the hot air cavity 29 on the spiral plate type heat exchanger 32 through the exhaust fan, the particulate matters carried by the combustion tail gas are deposited in the gap ash collecting bin for a period of time under the action of gravity, ash can be removed through the ash removing port 5, and the discharged tail gas is clean, low in temperature, safe and environment-friendly.
The output hot air of the hot blast stove is subjected to constant temperature control, and a control signal can be output through a temperature sampling signal by a controller to control the fuel supply quantity of the combustion chamber and the supply quantity of combustion-supporting cold air to realize automatic control.
Example 2
Based on the technology in the embodiment, the specific use process and principle of the spiral plate type internal combustion high-efficiency hot blast stove provided by the invention are as follows: the biomass fuel is added into the bottom combustion chamber 27 of the furnace body 1 through the fuel discharging mechanism 16 by the fuel hopper 15, the combustion air is fed into the combustion chamber 27 through the combustion air inlet 11 of the combustion chamber by the combustion air blower 12, and is ignited through the ignition port 4 arranged on the side wall of the furnace body 1, so that the combustion chamber starts to burn to generate a heat source, namely combustion tail gas, the tail gas to be combusted reaches a certain temperature, the fresh air inlet fan 10 feeds fresh air into the furnace body 1 through the fresh air inlet 9, the fresh air moves and diffuses round by round to the center of the furnace body 1 along the fresh air flowing direction 36 and the fresh air flowing path 35, meanwhile, the combustion tail gas emitted upwards by the combustion chamber 27, namely the heat source, the combustion exhaust gas which is dispersed into the spiral plate type hot air cavity 29 of the spiral plate type heat exchanger 32 and is dispersed into the spiral plate type hot air cavity 29 at the position of the fire return port 37 is dispersed from the center of the furnace body 1 to the outside of the furnace body 1 round by round along the combustion exhaust gas flowing direction 34 and the combustion exhaust gas flowing path 33, in the process that the combustion exhaust gas is dispersed from the center of the furnace body 1 to the outside of the furnace body 1 round by round along the spiral plate type hot air cavity 29 and fresh air moves from the center of the furnace body 1 round by round along the fresh air cavity 30 of the spiral plate type structure to the center of the furnace body 1, namely, the process that the fresh air and the combustion exhaust gas exchange heat, the fresh air reaches the center of the furnace body 1 through the heat exchanger, and after the heat exchange with the high-temperature combustion exhaust gas generated in the combustion chamber 27, the heating temperature rises to form hot air, the hot air is discharged from a hot air outlet through 6, high-temperature combustion tail gas is subjected to heat exchange with new cold air through a spiral plate type heat exchanger 32, the temperature is reduced, the tail gas exhaust fan 8 is discharged into an external environment through the combustion tail gas outlet 7, the heat exchange process is completed, particulate matters carried by the combustion tail gas are deposited in a gap ash collecting bin for a period of time due to the action of gravity, ash can be removed through an ash removing opening 5, residual ash in a combustion chamber can be discharged through an ash removing opening 3, and the intelligent constant temperature setting and automatic operation can be performed in the whole combustion and heat exchange process by controlling the fuel supply amount and the combustion-supporting cold air supply amount.
The temperature of the new hot air outlet 6 is set at a constant temperature according to the requirements, the temperature signal of the new hot air outlet 6 passes through the controller after being sampled and amplified, and then the controller controls the rotating speed and the air inlet quantity of the combustion-supporting cold air blower 12 and the rotating speed and the blanking quantity of the fuel blanking mechanism 16 to achieve automatic constant temperature operation.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. The spiral plate type internal combustion high-efficiency hot blast stove is characterized by comprising a stove body (1), wherein a combustion chamber (27) and a spiral plate type heat exchanger (32) are arranged in the stove body (1), the combustion chamber (27) is arranged at the center of the bottom of the stove body (1), the spiral plate type heat exchanger (32) is arranged on the periphery above the combustion chamber (27), and the combustion chamber (27) and the spiral plate type heat exchanger (32) are connected into a whole;
The spiral plate type heat exchanger (32) is of a spiral plate type structure distributed layer by layer around the central axis of the furnace body (1), the spiral plate type heat exchanger (32) comprises a plurality of hot air cavities (29) and fresh air cavities (30) which are alternately arranged, the spiral plate type heat exchanger (32) further comprises a fresh air outlet (6), a combustion tail gas outlet (7) and a fresh air inlet (9), and the fresh air outlet (6), the combustion tail gas outlet (7) and the fresh air inlet (9) are all arranged on the side wall of the furnace body (1);
The fresh air inlet (9), the fresh air cavity (30) and the fresh air outlet (6) are sequentially communicated to form a fresh air channel;
the combustion chamber (27), the hot air cavity (29) and the combustion tail gas air outlet (7) are sequentially communicated to form a hot air channel.
2. The spiral plate type internal combustion high-efficiency hot blast stove according to claim 1, wherein an ash collecting bin (28) is arranged at the bottom of the hot blast cavity (29), the ash collecting bin (28) is communicated with an ash removing opening (5) in a layered mode, and the ash removing opening (5) is arranged on the side wall of the stove body (1).
3. The spiral plate type internal combustion high-efficiency hot blast stove according to claim 1 is characterized in that a conical return fire port (37) is formed in the top of the spiral plate type heat exchanger (32), a detachable heat insulation inner container overhaul top cover (13) is arranged right above the conical return fire port (37) in the top of the stove body (1), and a heat insulation material (31) is arranged at the bottom of the detachable heat insulation inner container overhaul top cover (13).
4. The spiral plate type internal combustion high-efficiency hot blast stove according to claim 1, wherein a combustion supporting mechanism is arranged at the bottom of the combustion chamber (27), and comprises a combustion supporting air inlet (11) of the combustion chamber, a combustion supporting blower (12) of the combustion chamber, a combustion supporting bellows (21) and an air quantity regulating valve (38);
A fuel grate (24) is arranged between the combustion chamber (27) and the combustion-supporting bellows (21), and the air speed of the combustion-supporting blower (12) of the combustion chamber is adjustable.
5. The spiral plate type internal combustion high-efficiency hot blast stove according to claim 1, wherein an ash removing mechanism is arranged at the bottom of the combustion chamber (27), the ash removing mechanism comprises a combustion chamber ash removing port (3) and a combustion chamber ash removing channel (23), and the combustion chamber ash removing port (3) is communicated with the combustion chamber (27) through the combustion chamber ash removing channel (23).
6. The spiral plate type internal combustion high-efficiency hot blast stove according to claim 1, wherein a fuel funnel (15) is arranged on the side edge of the stove body (1), a fuel discharging mechanism (16) is arranged below the fuel funnel (15), and the fuel discharging mechanism (16) is communicated with the combustion chamber (27) through a throwing inclined tube (20).
7. The spiral plate type internal combustion high-efficiency hot-blast stove according to claim 1, wherein an ignition port (4) and a fire viewing door (2) are further arranged on the side wall of the stove body (1).
8. The application method of the spiral plate type internal combustion high-efficiency hot blast stove is characterized by comprising the following working processes that biomass fuel is added into a bottom combustion chamber (27) of a stove body (1) through a fuel discharging mechanism (16) by a fuel hopper (15), combustion air is introduced into the combustion chamber (27) through a combustion air inlet (11) by a combustion air blower (12), combustion exhaust gas is generated by starting combustion of the combustion chamber (27) through an ignition port (4) arranged on the side wall of the stove body (1), a fresh cold air inlet (10) sends fresh cold air into the stove body (1) through a fresh air inlet (9), the fresh cold air moves and diffuses one circle of fresh air cavity (30) of a spiral plate type structure along the spiral plate type heat exchanger (32) to the center of the stove body (1), meanwhile, the combustion exhaust gas emitted upwards by the combustion chamber (27) is dispersed downwards into a hot air cavity (29) of the spiral plate type heat exchanger (32) at a fire return port (37), and the combustion exhaust gas diffuses from the center of the one circle of the stove body (1) to the outside of the stove body (1);
The new cold air exchanges heat with the combustion exhaust gas in the hot air cavity (29) in the process of diffusing the new cold air into the center of the furnace body (1) along the new air cavity (30) round by round, the new cold air is heated through heat exchange to form hot air, and finally the hot air is discharged from the new hot air outlet (6), meanwhile, the temperature of the high-temperature combustion exhaust gas in the hot air cavity (29) is reduced after the heat exchange with the new cold air, and finally the high-temperature combustion exhaust gas is discharged into the external environment through the exhaust gas exhaust fan (8) of the combustion exhaust gas outlet (7), so that the heat exchange process is completed;
particulate matters carried by the combustion tail gas are deposited in the ash collecting bin (28) for a period of time under the action of gravity, ash can be removed through the ash removing opening (5), and the residual ash in the combustion chamber (27) can be discharged through the ash removing opening (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411333657.XA CN119222786A (en) | 2020-07-24 | 2020-07-24 | A spiral plate type internal combustion high-efficiency hot air stove and use method |
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| CN202411333657.XA CN119222786A (en) | 2020-07-24 | 2020-07-24 | A spiral plate type internal combustion high-efficiency hot air stove and use method |
| CN202010722900.2A CN112050468A (en) | 2020-07-24 | 2020-07-24 | Spiral plate type internal combustion high-efficiency hot blast stove |
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| CN202010722900.2A Division CN112050468A (en) | 2020-07-24 | 2020-07-24 | Spiral plate type internal combustion high-efficiency hot blast stove |
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| CN202411333657.XA Pending CN119222786A (en) | 2020-07-24 | 2020-07-24 | A spiral plate type internal combustion high-efficiency hot air stove and use method |
| CN202010722900.2A Pending CN112050468A (en) | 2020-07-24 | 2020-07-24 | Spiral plate type internal combustion high-efficiency hot blast stove |
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| CN112709982B (en) * | 2021-02-01 | 2025-03-14 | 赤峰红山圣火生物质能科技开发有限公司 | High efficiency and energy saving gasification combustion hot air furnace |
| CN113375343B (en) * | 2021-06-18 | 2023-04-18 | 政和县深山茶叶机械有限公司 | Energy-saving hot-blast stove inner container |
| CN114893909A (en) * | 2022-03-02 | 2022-08-12 | 成都航利装备科技有限公司 | Thermal state holding device and engine thermal state holding method |
| CN115435487B (en) * | 2022-09-22 | 2025-11-21 | 珠海格力电器股份有限公司 | Heat exchange core and fresh air handling unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2249127Y (en) * | 1996-03-18 | 1997-03-12 | 安阳钢铁集团有限责任公司 | Adding-ratio controller for sintering added coal powder |
| KR20030046648A (en) * | 2001-12-06 | 2003-06-18 | 권홍중 | Hot wind heating apparatus |
| CN101762154B (en) * | 2009-12-25 | 2011-05-04 | 广东顺祥节能照明科技有限公司 | Energy-saving ceramic tunnel kiln |
| KR20150057789A (en) * | 2013-11-20 | 2015-05-28 | 송현수 | heat collecting apparatus from stovepipe |
| CN103575096A (en) * | 2013-11-25 | 2014-02-12 | 中冶北方（大连）工程技术有限公司 | Pulverized coal pellet spraying and burning system |
| CN106196592A (en) * | 2016-05-18 | 2016-12-07 | 横县华能生物质燃料有限公司 | A biomass hot stove system |
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