CN107676971B - Multilayer temperature control biomass fuel hot air equipment - Google Patents
Multilayer temperature control biomass fuel hot air equipment Download PDFInfo
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- CN107676971B CN107676971B CN201710913746.5A CN201710913746A CN107676971B CN 107676971 B CN107676971 B CN 107676971B CN 201710913746 A CN201710913746 A CN 201710913746A CN 107676971 B CN107676971 B CN 107676971B
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- 239000000446 fuel Substances 0.000 title claims abstract description 107
- 239000002028 Biomass Substances 0.000 title claims abstract description 61
- 238000010438 heat treatment Methods 0.000 claims abstract description 180
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000001301 oxygen Substances 0.000 claims abstract description 75
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 75
- 238000002485 combustion reaction Methods 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims description 55
- 239000000779 smoke Substances 0.000 claims description 48
- 238000011084 recovery Methods 0.000 claims description 40
- 239000002699 waste material Substances 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 23
- 238000005192 partition Methods 0.000 claims description 19
- 238000004321 preservation Methods 0.000 claims description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 12
- 238000000746 purification Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000003028 elevating effect Effects 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- -1 sawdust Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
-
- 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
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1877—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/189—Arrangement or mounting of combustion heating means, e.g. grates or burners using solid fuel
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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
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2092—Arrangement or mounting of control or safety devices for air heaters using solid fuel
Abstract
The invention relates to novel multilayer temperature control biomass fuel hot air equipment, which is characterized in that an air heating unit is improved, so that air can be gradually heated through a local or whole heating space, the heat generated by combustion of biomass fuel can be better absorbed, and the effective utilization rate of the heat generated by combustion of the biomass fuel is improved; and through the structure of improving the grate, add at least two sets of elevating system, utilize hot-blast temperature sensor and a plurality of air temperature sensor, combine the detection signal of present required hot-blast temperature and each temperature sensor input to control each air-out valve, the operating condition of each elevating system and oxygen inlet valve, realize the stroke to the air heating, the distance between burning flame and the air heating unit, and the regulation and control of the oxygen supply volume and the fuel total amount of burning, thereby realize carrying out the regulation and control of multilayer to air-out temperature, can satisfy the user demand better, and can realize utilizing less biomass fuel also can make the air heat to equal temperature.
Description
Technical Field
The invention relates to a hot blast stove, in particular to a multilayer temperature control biomass fuel hot blast device.
Background
The hot blast stove is a device which converts chemical energy or electric energy of conventional energy into heat energy, so that the energy is supplied to corresponding equipment in the form of hot blast, and is commonly used for a dryer, a forming machine, heating and the like.
The biomass fuel is a clean fuel which is formed by burning biomass materials as fuel, mainly agricultural and forestry waste (such as straw, sawdust, bagasse, rice chaff and the like) and is directly burnt by crushing, mixing, extruding, drying and other processes when the biomass fuel is used as the fuel, wherein the agricultural and forestry waste is used as a raw material.
Therefore, in order to achieve sustainable development of society, biomass fuel is widely used as fuel of the hot blast stove at present, the biomass fuel can be fully combusted, and the discharge of tar of the biomass fuel is prevented. However, the existing biomass fuel hot-blast stove cannot regulate and control the air outlet temperature, so that the air outlet temperature is too hot or too low, the use requirement cannot be well met, and the heat energy generated after the combustion of the biomass fuel cannot be fully utilized for heating air, so that the heat energy loss is caused, and even the fuel waste is caused.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the invention provides a multilayer temperature control biomass fuel hot air device which can regulate and control the air outlet temperature in multiple layers, better meet the use requirement, improve the effective utilization rate of heat energy generated by biomass fuel combustion and realize that the air can be heated to the same temperature by using less biomass fuel.
A multilayer temperature control biomass fuel hot air device comprises a furnace body, an inner container, a combustion bin, a fuel bin, an oxygen supply device and an air blower; the device also comprises an air heating unit, at least two groups of lifting mechanisms, a plurality of air temperature sensors, a hot air temperature sensor and a heating control unit;
the furnace body is provided with a cold air inlet, a hot air outlet, a feeding hole and an oxygen inlet;
the inner container is arranged in the furnace body, and a heating cavity is formed in a space between the outer wall of the inner container and the inner wall of the furnace body; the top of the inner container penetrates through the furnace body and is provided with a smoke outlet;
the air heating unit, the combustion bin and the fuel bin are sequentially arranged from top to bottom, and the air heating unit comprises a heating shell provided with a plurality of air outlets and at least one air inlet, and a plurality of heat conducting walls; an air inlet of the heating shell is communicated with the heating cavity through an air guide channel, a plurality of air outlets of the heating shell are communicated with the hot air outlet through the same air guide channel, and each air outlet is provided with an air outlet valve; the plurality of heat conducting walls are arranged in the heating shell at intervals in a staggered manner from top to bottom, one end of each heat conducting wall is connected with the inner wall of one side of the heating shell, and a connecting channel is formed between the other end of each heat conducting wall and the space between the inner walls of the other side of the heating shell; a heating space is formed in the space between every two adjacent heat conducting walls, the heat conducting wall positioned at the topmost part and the heat conducting wall positioned at the bottommost part respectively form a heating space with the space between the inner top surface and the inner bottom surface of the heating shell, and every two adjacent heating spaces are communicated through a connecting channel between the two heating spaces; all the heating spaces and all the connecting channels form an air heating channel with at least one air inlet and a plurality of air outlets;
the combustion bin is communicated with the feed inlet through a feed pipe, and the interior of the combustion bin is communicated with the interior of the fuel bin;
a furnace bridge for receiving fuel is arranged in the fuel bin, and comprises a center bridge body with a circle center structure and at least one peripheral bridge body with an annular structure, which are sequentially arranged from the circle center direction to the circumferential direction; the central bridge body and the peripheral bridge body are arranged in a concentric manner, the periphery of the central bridge body is surrounded by the central bridge body, and an elastic separation net is arranged between the periphery of the central bridge body and the inner periphery of the peripheral bridge body; the bottoms of the central bridge body and the peripheral bridge body are respectively in driving connection with power shafts of the two groups of lifting mechanisms and can be driven by the two groups of lifting mechanisms to respectively or simultaneously do up-and-down reciprocating motion, so that the control of the fuel combustion amount and the distance between combustion flame and the air heating unit is realized;
the oxygen supply device is arranged at the opening of the combustion bin, an oxygen inlet of the oxygen supply device is communicated with the oxygen inlet through a pipeline, and an oxygen inlet valve is arranged in the oxygen inlet;
the air blower is arranged outside the furnace body, and an air supply opening of the air blower is communicated with the heating cavity through the cold air inlet;
the air temperature sensors are respectively in one-to-one correspondence with the air outlets, are respectively arranged at the air outlets corresponding to the air temperature sensors, and are used for detecting the air temperature of the heating space where the air temperature sensors are located and transmitting the detected air temperature signals to the heating control unit;
the hot air temperature sensor is arranged at the hot air outlet and used for detecting the current hot air temperature and transmitting a detected hot air temperature signal to the heating control unit;
the heating control unit comprises a trigger module and a control module; the trigger module is used for inputting a control instruction, setting the current required hot air temperature and sending the current required hot air temperature to the control module; the control module is respectively electrically connected with the air temperature sensors, the hot air temperature sensors, the two groups of lifting mechanisms, the air outlet valves, the oxygen inlet valve and the air blower, and controls the working states of the two groups of lifting mechanisms, the air outlet valves, the oxygen inlet valve and the air blower according to control instructions, the current required hot air temperature, each vacancy temperature signal and the hot air temperature signal.
Therefore, the air heating unit is improved, so that the air can be heated gradually through a local or whole heating space, the heat generated by combustion of the biomass fuel can be absorbed better, and the effective utilization rate of the heat generated by combustion of the biomass fuel is improved; the structure of the furnace bridge is improved, at least two groups of lifting mechanisms are additionally arranged, the working states of each air outlet valve, each lifting mechanism and an oxygen inlet valve are controlled by utilizing a hot air temperature sensor and a plurality of air temperature sensors and combining the current required hot air temperature and detection signals input by each temperature sensor, the regulation and control of the air heating stroke, the distance between combustion flame and an air heating unit, the oxygen supply amount and the total fuel amount of combustion (for example, only one group of lifting mechanisms are controlled to drive the fuel on the lifting mechanisms to rise to a combustion bin, namely local fuel combustion, and all the lifting mechanisms are controlled to drive all the fuel to rise to the combustion bin, namely all the fuel combustion) are realized, so that the multi-layer regulation and control of the air outlet temperature are realized, the fire control is realized on another layer, the use requirement can be better met, and the air can be heated to the same temperature by using less biomass fuel.
Further, the oxygen inlet valve is an air flow control valve; the control module controls the working states of the lifting mechanism, the air outlet valves, the oxygen inlet valve and the air blower, and comprises the following steps:
step 1: receiving a control instruction sent by a trigger module, judging whether the control instruction is a starting instruction, if so, executing the step 2, otherwise, controlling the blower and each temperature sensor to be in a shutdown state;
step 2: controlling the air blower, each temperature sensor and each valve to be in an operating state, and meanwhile, continuously processing a control instruction to obtain the current required hot air temperature;
and step 3: receiving a hot air temperature signal sent by a hot air temperature sensor, and processing the hot air temperature signal to obtain the current hot air temperature;
and 4, step 4: calculating a temperature difference value between the required hot air temperature and the current hot air temperature; if the temperature difference is zero, the current working state of the lifting mechanism and each valve is kept; if the temperature difference value is a negative value, executing the step 5; otherwise, if the temperature difference value is a positive value, sequentially executing the step 6 and the step 7;
and 5: receiving air temperature signals sent by each air sensor, respectively processing each air temperature signal to obtain the current air temperature of a heating space where each air sensor is located, and respectively calculating the difference value between the required hot air temperature and each current air temperature; if a difference value is zero, opening the air outlet valve at the air outlet of the corresponding heating space, and controlling the air outlet valves at the air outlets of other heating spaces to be closed; if all the difference values are negative values, controlling the blower to stop running and the oxygen inlet valve to be closed;
step 6: receiving air temperature signals sent by each air sensor, and respectively processing each air temperature signal to obtain the current air temperature of the heating space where each air sensor is located, so as to obtain a heating space with the highest current air temperature; controlling the opening of an air outlet valve at an air outlet of the heating space with the highest current air temperature and controlling the closing of other air outlet valves;
and 7: calling a prestored control data table; the control data table stores the relationship between the temperature difference value and the lifting height and the oxygen intake amount, and the relationship between the temperature difference value and the oxygen intake amount; comparing the temperature difference value with a preset temperature difference threshold value, if the temperature difference value is smaller than the temperature difference threshold value, obtaining a currently required oxygen intake value according to the relation between the temperature difference value and the oxygen intake amount in the control data table, and controlling an oxygen intake valve according to the oxygen intake value; if the temperature difference is larger than the temperature difference threshold, the currently required fuel height and oxygen amount are obtained according to the relation between the temperature difference and the lifting height and the oxygen intake amount in the control data table, and two groups of lifting mechanisms and oxygen intake valves are respectively controlled according to the fuel height and the oxygen amount.
Through the control steps, the temperature can be controlled according to the actual temperature, the air temperature of a plurality of heating spaces of the air heating unit can be detected according to a plurality of air temperature sensors, and the corresponding air outlet valve can be controlled to be opened or closed, so that the current hot air temperature can be controlled quickly under various conditions; meanwhile, the lifting mechanism and the oxygen inlet valve are controlled in a combined mode, so that the hot air temperature can be regulated and controlled rapidly in a wider range, and the actual use requirements can be met.
Furthermore, the multilayer temperature control biomass fuel hot air equipment also comprises a waste residue recovery tank provided with a recovery inlet; the lower part of the furnace body is provided with a furnace opening; the waste residue recovery tank is arranged in the furnace body and is positioned below the furnace bridge, a recovery inlet of the waste residue recovery tank faces the furnace bridge, and the waste residue recovery tank can extend out of the furnace body from the furnace mouth. Through limiting, the recovery of waste residues generated after biomass fuel combustion is facilitated, the furnace body is more clean, and the cleaning burden is reduced.
Furthermore, the multilayer temperature control biomass fuel hot air device also comprises two recovery slide rails and two pulley blocks; the two recovery slide rails are oppositely arranged on two opposite sides of the inner wall of the furnace body, and the two pulley blocks are respectively arranged on two opposite sides of the outer wall of the waste residue recovery groove; the waste residue recovery groove is arranged between the two recovery sliding rails through the two pulley blocks and can do reciprocating motion along the two recovery sliding rails, wherein the reciprocating motion extends out of the furnace mouth and enters the furnace body. By the limitation, the taking out and putting in operation of the waste residue recovery tank are further facilitated, thereby reducing the labor burden.
Furthermore, the multilayer temperature control biomass fuel hot air equipment also comprises a heating clapboard; the heating clapboard is erected between the smoke exhaust port and the air heating unit and is provided with a plurality of smoke exhaust holes, and a smoke exhaust one-way valve is arranged in each smoke exhaust hole; all the smoke exhaust one-way valves are electrically connected with the control module, and the control module controls the smoke exhaust one-way valves to be opened and closed according to a preset smoke exhaust time interval; the inner container is divided into a smoke exhaust area above the heating partition plate and a heat preservation area below the heating partition plate through the heating partition plate; when the control module controls all the smoke exhaust one-way valves to be closed, the heating partition plate partitions a smoke exhaust interval and a heat preservation interval, and the heat preservation interval is a closed interval; when the control module controls the opening of the at least one smoke exhaust one-way valve, the smoke exhaust interval is communicated with the heat preservation area, and the heat preservation interval is an open interval. Through limiting, the heating shell of the air heating unit is further heated by the aid of high-temperature flue gas generated by combustion, so that utilization of heat energy generated by combustion of biomass fuel is further improved, and fuel loss is further reduced.
Further, the multilayer temperature control biomass fuel hot air equipment also comprises an exhaust fan; the exhaust fan is arranged at the smoke exhaust port. Through limiting, the exhaust of the flue gas generated by combustion is accelerated, and the phenomenon that the combustion is influenced due to too much and too strong flue gas is avoided.
Furthermore, the multilayer temperature control biomass fuel hot air equipment also comprises a flue gas purification unit; the flue gas purification unit is arranged between the exhaust fan and the air heating unit. Through the limitation, the smoke generated by the combustion of the biomass fuel is purified and then discharged to the outside, and the pollution to the environment is reduced.
Furthermore, the wall surface of the air guide channel between the air outlet of the air heating unit and the hot air outlet of the furnace body comprises a heat insulation layer, a vacuum layer and a heat insulation layer which are sequentially arranged from inside to outside. The limit is beneficial to ensuring that the loss of air heat is reduced in the process of sending the heated air out of the hot air outlet.
Furthermore, the heating shell of the air heating unit is provided with two air inlets; the two air inlets are oppositely arranged at two opposite sides of a heating space at the top and are respectively communicated with the heating cavity through an air guide channel; the plurality of air outlets are respectively arranged on one side of the other heating spaces except the topmost two layers of heating spaces. By this limiting, not only be favorable to guaranteeing the air quantity that flows into the air heating unit, and, because the hot-air rises, the cold air sinks, and the lower part of air heating unit is closer to the fire source, has higher temperature, promptly, every layer of heating space of air heating unit all has different air temperature, and air intake and a plurality of air outlet set up from top to bottom, be favorable to like this from the cold air of air intake entering can sink fast and be heated the back and export from one or more air outlet, also do benefit to the multiple air that the air heating unit can export different temperatures.
Furthermore, the cold air inlet and the hot air outlet are oppositely arranged at two opposite sides of the lower part of the furnace body. By definition herein, it is advantageous to increase the speed of interaction between hot air and cold air.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a multi-layer temperature-controlled biomass fuel hot air device according to the present invention;
FIG. 2 is a schematic cross-sectional structural view of an air heating unit of the multi-layer temperature-controlled biomass fuel hot air device of the present invention;
FIG. 3 is a schematic top view of the grate of the present invention;
FIG. 4 is a perspective view of the front view of the grate of the present invention;
FIG. 5 is a schematic view of the construction of the inventive grate with the central bridge raised and the peripheral bridges at an initial height;
FIG. 6 is a perspective structural view of the grate when the central and peripheral bridges of the grate of the present invention are raised to the same height;
FIG. 7 is a schematic view of the construction of the grate when the central and peripheral bridges of the grate of the present invention are raised to different heights;
FIG. 8 is a schematic structural view of the multi-layer temperature-controlled biofuel hot air device of FIG. 1 when containing biomass fuel;
fig. 9 is a schematic diagram of the multi-layer temperature-controlled biomass fuel hot air device in fig. 1 after the lifting mechanism 81 controls the central bridge body to drive the biomass fuel to ascend;
fig. 10 is a schematic structural diagram of the multilayer temperature-controlled biomass fuel hot air device in fig. 9 after further modification.
Detailed Description
It is to be understood that in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, the present invention provides a multi-layer temperature control biomass fuel hot air device, which comprises a furnace body 1, an inner container 2, a combustion chamber 3, a fuel chamber 4, an oxygen supply device 5, a blower 6, an air heating unit 7, a lifting mechanism 8, a plurality of air temperature sensors W, a hot air sensor 9 and a heating control unit. In this embodiment, two sets of lifting mechanisms (81 and 82) are provided, each set of lifting mechanisms may include one or more lifting mechanisms.
The furnace body 1 is provided with a cold air inlet 11, a hot air outlet 12, a feeding hole 13 and an oxygen inlet 14.
The inner container 2 is arranged in the furnace body 1, and a heating cavity A is formed in a space between the outer wall of the inner container and the inner wall of the furnace body 1; the top of the inner container 2 is communicated with the furnace body 1 and is provided with a smoke outlet 21.
Referring to fig. 1 and fig. 2, the air heating unit 7, the combustion chamber 3 and the fuel chamber 4 are sequentially disposed from top to bottom, and the air heating unit 7 includes a heating housing 71 having a plurality of air outlets 711 and at least one air inlet, and a plurality of heat-conducting walls 72. The air inlet of the heating shell 71 is communicated with the heating cavity a through an air guide channel, a plurality of air outlets 711 of the heating shell are communicated with the hot air outlet 12 through the same air guide channel D1, and each air outlet is provided with an air outlet valve. The plurality of heat conducting walls 72 are sequentially arranged in the heating shell 71 at intervals in a staggered manner from top to bottom, one end of each heat conducting wall is connected with the inner wall of one side of the heating shell 71, and the other end of each heat conducting wall forms a connecting channel with the space between the inner walls of the other side of the heating shell 71; and the space between every two adjacent heat conducting walls forms a heating space, the heat conducting wall positioned at the topmost part and the heat conducting wall positioned at the bottommost part respectively form a heating space with the space between the inner top surface and the inner bottom surface of the heating shell 71, and every two adjacent heating spaces are communicated through a connecting channel between the two heating spaces. Whereby all heating spaces and all connecting channels together form an air heating channel with only at least one air inlet and a plurality of air outlets 711.
The combustion chamber 3 is communicated with the feed inlet 13 through a feed pipe D4, and the combustion chamber 3 is internally communicated with the fuel chamber 4.
A furnace bridge 41 for receiving fuel is disposed in the fuel bin 4, and referring to fig. 3 to 8, the furnace bridge 41 includes a central bridge 411 having a circle center structure and at least one peripheral bridge 412 having an annular structure, which are sequentially disposed from the circle center direction to the circumferential direction. In this embodiment, the number of peripheral bridges 412 is 1. The central bridge 411 and the peripheral bridge 412 are concentrically arranged, the periphery of the central bridge 411 is surrounded by the central bridge 411, and an elastic separation net is arranged between the periphery of the central bridge 411 and the inner periphery of the peripheral bridge 412, so that fuel can be prevented from falling off in the rising process through the elastic separation net even when the two bridges are at different heights. The bottoms of the central bridge body 411 and the peripheral bridge body 412 are respectively in driving connection with power shafts of the two groups of lifting mechanisms (81 and 82), and can be driven by the two groups of lifting mechanisms (81 and 82) to respectively or simultaneously reciprocate up and down, so that the control of the fuel combustion amount and the distance between the combustion flame and the air heating unit is realized. When the lifting mechanism 81 at the bottom of the central bridge 411 and the lifting mechanism 82 at the bottom of the peripheral bridge 412 are in the initial state, the central bridge 411 and the peripheral bridge 412 are at the lowest level, as shown in fig. 3; when the central bridge 411 is lifted by the lifting mechanism 81 at the bottom of the central bridge 411, and the peripheral bridge 412 is not lifted by the lifting mechanism 82 at the bottom of the peripheral bridge 412, only the fuel on the top surface of the central bridge 411 will rise and approach the air heating unit 7, as shown in fig. 5; when the two sets of lifting mechanisms 81 and 82 simultaneously drive the central bridge 411 and the peripheral bridge 412 to ascend to the highest position, the structure of the furnace bridge 41 is as shown in fig. 6; when the two sets of lifting mechanisms 81 and 82 drive the central bridge 411 and the peripheral bridge 412 to rise to different heights, the structure of the furnace bridge is as shown in fig. 7.
The oxygen supply device 5 is disposed at an opening of the combustion chamber 3, an oxygen inlet thereof is communicated with the oxygen inlet 14 through a pipeline D5, and an oxygen inlet valve is disposed in the oxygen inlet 14.
The air blower 6 is arranged outside the furnace body 1, and an air supply opening of the air blower is communicated with the heating cavity A through the cold air inlet 11.
The air temperature sensors W respectively correspond to the air outlets 711 one to one, are respectively disposed at the air outlets corresponding thereto, and are configured to detect an air temperature of a heating space where the detector is located, and transmit a detected air temperature signal to the heating control unit.
The hot air temperature sensor 9 is disposed at the hot air outlet 12, and is configured to detect a current hot air temperature and transmit a detected hot air temperature signal to the heating control unit.
The heating control unit comprises a trigger module and a control module; the trigger module is used for inputting a control instruction, setting the current required hot air temperature and sending the current required hot air temperature to the control module. The control module is respectively and electrically connected with a plurality of air temperature sensors W1, a hot air temperature sensor 9, a lifting mechanism 8, an oxygen inlet valve and a blower 6; and the control module controls the working states of the lifting mechanism 8, the air outlet valves, the oxygen inlet valve and the air blower 6 according to a control instruction, the current required hot air temperature, each vacancy temperature signal and the hot air temperature signal.
In this embodiment, in order to improve the intelligence of the temperature regulation of the hot air, preferably, the oxygen inlet valve is an air flow control valve.
Therefore, during operation, the blower 6 is started, cold air to be heated enters the heating cavity a from the air outlet of the blower 6, the cold air is heated by the heating cavity a, gradually rises and enters the air heating unit 7 from the air guide channel and the air inlet of the heating shell 71, and heat of the air heating channel and heat of each heat conducting wall are absorbed along the air heating channel to form hot air; then flows out from any air outlet of the air heating unit 7 and the air guide channel D1 to the hot air outlet 12, so as to realize hot air output. In this working process, the control module controls the working states of the two sets of lifting mechanisms 81 and 82, the plurality of air outlet valves, the plurality of oxygen inlet valves and the blower 6, and comprises the following steps:
step 1: receiving a control instruction sent by a trigger module, judging whether the control instruction is a starting instruction, if so, executing the step 2, otherwise, controlling the blower and each temperature sensor to be in a shutdown state; the current required hot air temperature is input through a trigger module, the trigger module can be composed of a control button and a display screen or can be a touch screen, and when the hot air temperature control device is used, a starting instruction and the required hot air temperature can be input by a human hand; when the hot air equipment is not needed to be used, a shutdown instruction can be input by a human hand, and the control module can control the hot air equipment to be closed;
step 2: controlling the blower 6, each temperature sensor and each valve to be in an operating state, and meanwhile, continuously processing a control instruction to obtain the current required hot air temperature;
and step 3: receiving a hot air temperature signal sent by a hot air temperature sensor 9, and processing the hot air temperature signal to obtain the current hot air temperature;
and 4, step 4: calculating a temperature difference value between the required hot air temperature and the current hot air temperature; if the temperature difference is zero, the current working state of the lifting mechanism and each valve is kept; if the temperature difference value is a negative value, executing the step 5; otherwise, if the temperature difference value is a positive value, sequentially executing the step 6 and the step 7;
and 5: receiving air temperature signals sent by each air sensor, respectively processing each air temperature signal to obtain the current air temperature of a heating space where each air sensor is located, and respectively calculating the difference value between the required hot air temperature and each current air temperature; if a difference value is zero, opening the air outlet valve at the air outlet of the corresponding heating space, and controlling the air outlet valves at the air outlets of other heating spaces to be closed; if all the difference values are negative values, controlling the blower to stop running and the oxygen inlet valve to be closed;
step 6: receiving air temperature signals sent by each air sensor, and respectively processing each air temperature signal to obtain the current air temperature of the heating space where each air sensor is located, so as to obtain a heating space with the highest current air temperature; controlling the opening of an air outlet valve at an air outlet of the heating space with the highest current air temperature and controlling the closing of other air outlet valves;
and 7: calling a prestored control data table; the control data table stores the relationship between the temperature difference value and the lifting height and the oxygen intake amount, and the relationship between the temperature difference value and the oxygen intake amount; comparing the temperature difference value with a preset temperature difference threshold value, if the temperature difference value is smaller than the temperature difference threshold value, obtaining a currently required oxygen intake value according to the relation between the temperature difference value and the oxygen intake amount in the control data table, and controlling an oxygen intake valve according to the oxygen intake value; if the temperature difference is larger than the temperature difference threshold, the currently required fuel height and oxygen amount are obtained according to the relationship between the temperature difference and the lifting height and oxygen intake amount in the control data table, and the two groups of lifting mechanisms 81 and 82 and the oxygen intake valve are respectively controlled according to the fuel height and the oxygen amount. The control data table is obtained according to a large amount of experimental data, and is obtained after a large amount of data statistics and multiple adjustments, like the building process of the classifier, and the specific obtained technical means is the same as the prior art means, and is not described herein again.
In the above steps, the following description schematically illustrates a process in which the control module controls the two sets of lifting mechanisms 81 and 82 to operate, and when the temperature difference is a negative value, which indicates that the current hot air temperature is higher than the required hot air temperature, the control module controls all the lifting mechanisms 81 and 82 to descend to the lowest position, that is, the position shown in fig. 8; when the temperature difference is a positive value, judging whether the temperature difference is greater than a first threshold value, if so, determining that the two groups of lifting mechanisms 81 and 82 need to be controlled to simultaneously extend to drive the fuel on the central bridge body 411 and the peripheral bridge body 412 to rise to a certain height by calling a control data table so as to enable the air heating unit 7 to be closer to a heat source and increase the total fuel combustion amount, and controlling the power shafts of the two groups of lifting mechanisms 81 and 82 to run to a certain height according to the current extending stroke by a control module to drive the fuel to rise; if the temperature difference is a positive value and the temperature difference is smaller than the first threshold, only the lifting mechanism 81 is controlled to drive the central bridge 411 to rise to a certain height, as shown in the position shown in fig. 9. Wherein the "current extension stroke" is obtained by referring to the control data table.
As a more preferred solution to ensure the amount of air flowing into the air heating unit 7, please continue to refer to fig. 1 and 2, the heating housing 71 of the air heating unit 7 is provided with two air inlets (712 and 713). The two air inlets (712 and 713) are oppositely arranged at two opposite sides of a heating space B1 at the topmost part and are respectively communicated with the heating cavity A through an air guide channel D2 and an air guide channel D3; the plurality of outlets 711 are respectively disposed at one side of the other heating spaces except the two heating spaces at the topmost layer. Because the hot air rises, the cold air sinks, and the lower part of the air heating unit 7 is closer to the fire source and has higher temperature, namely, each layer of heating space of the air heating unit has different air temperature, and the two air inlets (712 and 713) and the plurality of air outlets 711 are arranged up and down, so that the cold air entering from the air inlets can sink rapidly and be output from one or more air outlets after being heated, and the air heating unit can output various air with different temperatures. Preferably, the plurality of heat conducting walls 72 are arranged parallel to each other.
In order to increase the interaction speed between the hot air and the cold air, preferably, referring to fig. 1, the cold air inlet 11 and the hot air outlet 12 are oppositely disposed at two opposite sides of the lower portion of the furnace body 1.
Further, in order to ensure that the loss of air heat is reduced in the process of sending the heated air out of the hot air outlet 12, as a more preferable technical scheme, the wall surface of the air guide channel D1 between the air outlet 711 of the air heating unit 7 and the hot air outlet 12 of the furnace body 1 comprises an insulating layer, a vacuum layer and an insulating layer which are sequentially arranged from inside to outside.
In order to facilitate the utilization of the high-temperature flue gas generated by combustion to further heat the heating shell of the air heating unit 7, thereby further improving the utilization of the heat energy generated by the combustion of the biomass fuel and further reducing the fuel loss, as a more preferable technical scheme, please refer to fig. 10, the multi-layer temperature-controlled biomass fuel hot air device of the present invention further comprises a heating partition plate 10; the heating partition plate 10 is erected between the smoke exhaust port 21 and the air heating unit 7, and is provided with a plurality of smoke exhaust holes 101, and each smoke exhaust hole is provided with a smoke exhaust one-way valve; all the smoke exhaust one-way valves are electrically connected with the control module, and the control module controls the smoke exhaust one-way valves to be opened and closed according to a preset smoke exhaust time interval; the inner container 2 is divided into a smoke exhaust area above the heating partition plate 10 and a heat preservation area below the heating partition plate 10 through the heating partition plate 10; when the control module controls all the smoke exhaust one-way valves to be closed, the heating partition plate 10 partitions a smoke exhaust interval and a heat preservation interval, and the heat preservation interval is a closed interval; when the control module controls the opening of the at least one smoke exhaust one-way valve, the smoke exhaust interval is communicated with the heat preservation area, and the heat preservation interval is an open interval. The preset smoke exhaust time interval can be obtained from practical experiments, that is, based on the multilayer temperature control biomass fuel hot air device, experiments have shown that in the combustion process, no smoke exhaust is performed within a certain time of combustion, and no influence is caused on combustion, and the combustion effect is not good when no smoke exhaust is performed within a certain time of combustion, so that the smoke exhaust time interval is a combustion duration threshold value which does not perform smoke exhaust after combustion and does not influence combustion, and other values smaller than the threshold value can be taken, so that the specific value of the smoke exhaust time interval is not limited in the embodiment.
In order to facilitate the recovery of waste residues generated after the combustion of the biomass fuel, make the furnace body 1 more convenient to clean and reduce the cleaning burden, as a more preferable technical scheme, please refer to fig. 10 continuously, the multilayer temperature-controlled biomass fuel hot air equipment further comprises a waste residue recovery tank provided with a recovery inlet; and a furnace opening 15 is formed in the lower part of the furnace body 1, and a furnace door is arranged in the furnace opening 15. The waste residue recovery groove is arranged in the furnace body 1 and is positioned below the furnace bridge 41, a recovery inlet of the waste residue recovery groove faces the furnace bridge 41, and the waste residue recovery groove can extend out of the furnace body 1 from the furnace mouth 15.
In order to further facilitate the taking out and putting in operation of the waste residue recovery tank and reduce the labor burden, as a more optimal technical scheme, the multilayer temperature control biomass fuel hot air equipment also comprises two recovery slide rails and two pulley blocks; the two recovery slide rails are oppositely arranged on two opposite sides of the inner wall of the furnace body 1, and the two pulley blocks are respectively arranged on two opposite sides of the outer wall of the waste residue recovery groove; the waste residue recovery groove is arranged between the two recovery sliding rails through the two pulley blocks and can do reciprocating motion along the two recovery sliding rails, wherein the reciprocating motion extends out of the furnace mouth 15 and enters the furnace body 1.
In order to accelerate the discharge of the flue gas generated by combustion and avoid the influence of excessive and over-concentrated flue gas on combustion, as a more preferable technical scheme, please refer to fig. 10, the multi-layer temperature control biomass fuel hot air device of the present invention further comprises an exhaust fan 20; the exhaust fan 20 is disposed at the exhaust port 21.
As a more preferable technical scheme, the multilayer temperature-controlled biomass fuel hot air device further comprises a flue gas purification unit 30, so that flue gas generated by biomass fuel combustion can be purified and then discharged outdoors, and the pollution to the environment is reduced; the flue gas cleaning unit 30 is disposed between the exhaust fan 20 and the air heating unit 7. Based on the scheme of adding the heating partition plate 10, the multi-layer temperature control biomass fuel hot air device, the flue gas purification unit 30 is arranged between the exhaust fan 20 and the heating partition plate 10, as shown in fig. 10.
In this embodiment, each lifting mechanism 8 is an electric push rod or an electric cylinder or other driving mechanism capable of performing a reciprocating linear motion. Moreover, the number of the lifting mechanisms can be set according to actual use requirements, a plurality of lifting mechanisms can be used for working synchronously, the weight of fuel and the weight of the furnace bridge 41 are borne together, the load sharing is realized, the motion stability is improved, and the service life of the lifting mechanisms is prolonged.
Compared with the prior art, the multilayer temperature control biomass fuel hot air equipment has the advantages that the air heating unit is improved, so that air can be heated gradually through a local or whole heating space, the heat generated by combustion of biomass fuel can be better absorbed, and the effective utilization rate of the heat generated by combustion of the biomass fuel is improved; the structure of the furnace bridge is improved, at least two groups of lifting mechanisms are additionally arranged, the working states of each air outlet valve, each lifting mechanism and an oxygen inlet valve are controlled by utilizing a hot air temperature sensor and a plurality of air temperature sensors and combining the current required hot air temperature and detection signals input by each temperature sensor, the regulation and control of the air heating stroke, the distance between combustion flame and an air heating unit, the oxygen supply amount and the total fuel amount of combustion (for example, only one group of lifting mechanisms are controlled to drive the fuel on the lifting mechanisms to rise to a combustion bin, namely local fuel combustion, and all the lifting mechanisms are controlled to drive all the fuel to rise to the combustion bin, namely all the fuel combustion) are realized, so that the multi-layer regulation and control of the air outlet temperature are realized, the fire control is realized on another layer, the use requirement can be better met, and the air can be heated to the same temperature by using less biomass fuel.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. The utility model provides a multilayer accuse temperature biomass fuel hot-blast apparatus, includes furnace body, inner bag, burning storehouse, bunker, oxygen supply ware and air-blower, its characterized in that: the device also comprises an air heating unit, at least two groups of lifting mechanisms, a plurality of air temperature sensors, a hot air temperature sensor and a heating control unit;
the furnace body is provided with a cold air inlet, a hot air outlet, a feeding hole and an oxygen inlet;
the inner container is arranged in the furnace body, and a heating cavity is formed in a space between the outer wall of the inner container and the inner wall of the furnace body; the top of the inner container penetrates through the furnace body and is provided with a smoke outlet;
the air heating unit, the combustion bin and the fuel bin are sequentially arranged from top to bottom, and the air heating unit comprises a heating shell provided with a plurality of air outlets and at least one air inlet, and a plurality of heat conducting walls; an air inlet of the heating shell is communicated with the heating cavity through an air guide channel, a plurality of air outlets of the heating shell are communicated with the hot air outlet through the same air guide channel, and each air outlet is provided with an air outlet valve; the plurality of heat conducting walls are arranged in the heating shell at intervals in a staggered manner from top to bottom, one end of each heat conducting wall is connected with the inner wall of one side of the heating shell, and a connecting channel is formed between the other end of each heat conducting wall and the space between the inner walls of the other side of the heating shell; a heating space is formed in the space between every two adjacent heat conducting walls, the heat conducting wall positioned at the topmost part and the heat conducting wall positioned at the bottommost part respectively form a heating space with the space between the inner top surface and the inner bottom surface of the heating shell, and every two adjacent heating spaces are communicated through a connecting channel between the two heating spaces; all the heating spaces and all the connecting channels form an air heating channel with at least one air inlet and a plurality of air outlets;
the combustion bin is communicated with the feed inlet through a feed pipe, and the interior of the combustion bin is communicated with the interior of the fuel bin;
a furnace bridge for receiving fuel is arranged in the fuel bin, and comprises a center bridge body with a circle center structure and at least one peripheral bridge body with an annular structure, which are sequentially arranged from the circle center direction to the circumferential direction; the central bridge body and the peripheral bridge body are arranged in a concentric manner, the periphery of the central bridge body is surrounded by the central bridge body, and an elastic separation net is arranged between the periphery of the central bridge body and the inner periphery of the peripheral bridge body; the bottoms of the central bridge body and the peripheral bridge body are respectively in driving connection with power shafts of the two groups of lifting mechanisms and can be driven by the two groups of lifting mechanisms to respectively or simultaneously do up-and-down reciprocating motion, so that the control of the fuel combustion amount and the distance between combustion flame and the air heating unit is realized;
the oxygen supply device is arranged at the opening of the combustion bin, an oxygen inlet of the oxygen supply device is communicated with the oxygen inlet through a pipeline, and an oxygen inlet valve is arranged in the oxygen inlet;
the air blower is arranged outside the furnace body, and an air supply opening of the air blower is communicated with the heating cavity through the cold air inlet;
the air temperature sensors are respectively in one-to-one correspondence with the air outlets, are respectively arranged at the air outlets corresponding to the air temperature sensors, and are used for detecting the air temperature of the heating space where the air temperature sensors are located and transmitting the detected air temperature signals to the heating control unit;
the hot air temperature sensor is arranged at the hot air outlet and used for detecting the current hot air temperature and transmitting a detected hot air temperature signal to the heating control unit;
the heating control unit comprises a trigger module and a control module; the trigger module is used for inputting a control instruction, setting the current required hot air temperature and sending the current required hot air temperature to the control module; the control module is respectively electrically connected with the air temperature sensors, the hot air temperature sensors, the two groups of lifting mechanisms, the air outlet valves, the oxygen inlet valve and the air blower, and controls the working states of the two groups of lifting mechanisms, the air outlet valves, the oxygen inlet valve and the air blower according to a control instruction, the current required hot air temperature, each vacancy temperature signal and the hot air temperature signal.
2. The multi-layer temperature-controlled biomass fuel hot air device according to claim 1, characterized in that: the oxygen inlet valve is an air flow control valve; the control module controls the working states of the two groups of lifting mechanisms, the plurality of air outlet valves, the oxygen inlet valve and the air blower, and comprises the following steps:
step 1: receiving a control instruction sent by a trigger module, judging whether the control instruction is a starting instruction, if so, executing the step 2, otherwise, controlling the blower and each temperature sensor to be in a shutdown state;
step 2: controlling the air blower, each temperature sensor and each valve to be in an operating state, and meanwhile, continuously processing a control instruction to obtain the current required hot air temperature;
and step 3: receiving a hot air temperature signal sent by a hot air temperature sensor, and processing the hot air temperature signal to obtain the current hot air temperature;
and 4, step 4: calculating a temperature difference value between the required hot air temperature and the current hot air temperature; if the temperature difference is zero, the current working state of the lifting mechanism and each valve is kept; if the temperature difference value is a negative value, executing the step 5; otherwise, if the temperature difference value is a positive value, sequentially executing the step 6 and the step 7;
and 5: receiving air temperature signals sent by each air sensor, respectively processing each air temperature signal to obtain the current air temperature of a heating space where each air sensor is located, and respectively calculating the difference value between the required hot air temperature and each current air temperature; if a difference value is zero, opening the air outlet valve at the air outlet of the corresponding heating space, and controlling the air outlet valves at the air outlets of other heating spaces to be closed; if all the difference values are negative values, controlling the blower to stop running and the oxygen inlet valve to be closed;
step 6: receiving air temperature signals sent by each air sensor, and respectively processing each air temperature signal to obtain the current air temperature of the heating space where each air sensor is located, so as to obtain a heating space with the highest current air temperature; controlling the opening of an air outlet valve at an air outlet of the heating space with the highest current air temperature and controlling the closing of other air outlet valves;
and 7: calling a prestored control data table; the control data table stores the relationship between the temperature difference value and the lifting height and the oxygen intake amount, and the relationship between the temperature difference value and the oxygen intake amount; comparing the temperature difference value with a preset temperature difference threshold value, if the temperature difference value is smaller than the temperature difference threshold value, obtaining a currently required oxygen intake value according to the relation between the temperature difference value and the oxygen intake amount in the control data table, and controlling an oxygen intake valve according to the oxygen intake value; if the temperature difference is larger than the temperature difference threshold, the currently required fuel height and oxygen amount are obtained according to the relation between the temperature difference and the lifting height and the oxygen intake amount in the control data table, and two groups of lifting mechanisms and oxygen intake valves are respectively controlled according to the fuel height and the oxygen amount.
3. The multi-layer temperature-controlled biomass fuel hot air device according to claim 1 or 2, characterized in that: the waste residue recovery tank is provided with a recovery inlet; the lower part of the furnace body is provided with a furnace opening; the waste residue recovery tank is arranged in the furnace body and is positioned below the furnace bridge, a recovery inlet of the waste residue recovery tank faces the furnace bridge, and the waste residue recovery tank can extend out of the furnace body from the furnace mouth.
4. The multi-layer temperature-controlled biomass fuel hot air device according to claim 3, characterized in that: the device also comprises two recovery slide rails and two pulley blocks; the two recovery slide rails are oppositely arranged on two opposite sides of the inner wall of the furnace body, and the two pulley blocks are respectively arranged on two opposite sides of the outer wall of the waste residue recovery groove; the waste residue recovery groove is arranged between the two recovery sliding rails through the two pulley blocks and can do reciprocating motion along the two recovery sliding rails, wherein the reciprocating motion extends out of the furnace mouth and enters the furnace body.
5. The multi-layer temperature-controlled biomass fuel hot air device according to claim 1 or 2, characterized in that: also comprises a heating clapboard; the heating clapboard is erected between the smoke exhaust port and the air heating unit and is provided with a plurality of smoke exhaust holes, and a smoke exhaust one-way valve is arranged in each smoke exhaust hole; all the smoke exhaust one-way valves are electrically connected with the control module, and the control module controls the smoke exhaust one-way valves to be opened and closed according to a preset smoke exhaust time interval; the inner container is divided into a smoke exhaust area above the heating partition plate and a heat preservation area below the heating partition plate through the heating partition plate;
when the control module controls all the smoke exhaust one-way valves to be closed, the heating partition plate partitions a smoke exhaust interval and a heat preservation interval, and the heat preservation interval is a closed interval; when the control module controls the opening of the at least one smoke exhaust one-way valve, the smoke exhaust interval is communicated with the heat preservation area, and the heat preservation interval is an open interval.
6. The multi-layer temperature-controlled biomass fuel hot air device according to claim 1 or 2, characterized in that: the device also comprises an exhaust fan; the exhaust fan is arranged at the smoke exhaust port.
7. The multi-layer temperature-controlled biomass fuel hot air device according to claim 6, characterized in that: also comprises a flue gas purification unit; the flue gas purification unit is arranged between the exhaust fan and the air heating unit.
8. The multi-layer temperature-controlled biomass fuel hot air device according to claim 1, characterized in that: the wall surface of the air guide channel between the air outlet of the air heating unit and the hot air outlet of the furnace body comprises a heat insulation layer, a vacuum layer and a heat insulation layer which are sequentially arranged from inside to outside.
9. The multi-layer temperature-controlled biomass fuel hot air device according to claim 1, characterized in that: the heating shell of the air heating unit is provided with two air inlets; the two air inlets are oppositely arranged at two opposite sides of a heating space at the top and are respectively communicated with the heating cavity through an air guide channel; the plurality of air outlets are respectively arranged on one side of the other heating spaces except the topmost two layers of heating spaces.
10. The multi-layer temperature-controlled biomass fuel hot air device according to claim 9, characterized in that: the cold air inlet and the hot air outlet are oppositely arranged at two opposite sides of the lower part of the furnace body.
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| CN201710913746.5A CN107676971B (en) | 2017-09-30 | 2017-09-30 | Multilayer temperature control biomass fuel hot air equipment |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907354A (en) * | 2010-08-30 | 2010-12-08 | 蒋世仁 | Hot-blast stove of biomass energy source |
| CN202101401U (en) * | 2011-05-16 | 2012-01-04 | 王合新 | Novel hot air furnace |
| CN102486314A (en) * | 2010-12-06 | 2012-06-06 | 许国贵 | Novel biomass gasification furnace |
-
2017
- 2017-09-30 CN CN201710913746.5A patent/CN107676971B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907354A (en) * | 2010-08-30 | 2010-12-08 | 蒋世仁 | Hot-blast stove of biomass energy source |
| CN102486314A (en) * | 2010-12-06 | 2012-06-06 | 许国贵 | Novel biomass gasification furnace |
| CN202101401U (en) * | 2011-05-16 | 2012-01-04 | 王合新 | Novel hot air furnace |
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