Civil biomass gasification device

Abstract

The invention belongs to the technical field of civil stoves taking biomass as fuel, and provides a civil biomass gasification device, which comprises a gasification furnace, a biomass gasification furnace, a biomass gasification furnace and a biomass gasification furnace, the air blower is placed indoors, and the air speed of the air blower is adjustable; the dust remover is mounted on an outdoor wall and is used for purifying flue gas discharged by the gasifier; the control box is mounted on an indoor wall and is used for controlling the air blower and the dust remover to work; wherein a combustion chamber, a gasification chamber, a heating chamber and a dust removal chamber which are sequentially communicated are arranged in the gasification furnace, first to third air ducts which are sequentially communicated and located in the gasification furnace are arranged outside the combustion chamber, the first air duct is communicated with the air blower, and the second air duct and the third air duct are respectively communicated with the combustion chamber and the gasification chamber to introduce secondary air. Secondary air is introduced through the air blower to conduct secondary combustion on flue gas containing particulate matter at the source, the combustion efficiency is high, heat energy waste is reduced, the dust remover is utilized at the tail end to purify and treat exhausted flue gas, particulate matter emission is reduced, and energy saving and environment protection are achieved.

Description

Technical Field

[0001] This invention relates to the field of civilian stoves using biomass as fuel, and specifically to a civilian biomass gasification device. Background Technology

[0002] The heating stove is a common burning appliance in the daily life of Tibetan residents. It is used more often for heating in winter. It mainly consists of a stove body, a feeding port at the front of the stove body and a flue at the rear of the stove body. The upper part of the stove body can be used to place cooking utensils such as kettles and pots for cooking food.

[0003] Currently, most Tibetan residents use direct combustion stoves for heating. The limited natural primary air supply leads to incomplete combustion, low thermal efficiency, and significant energy waste. This is especially problematic in Tibetan areas where specific fuels (such as firewood and loose coal) are used. The natural primary air supply cannot be controlled according to fuel type and combustion state, making it difficult to meet the local population's demand for clean, efficient, and environmentally friendly heating. Furthermore, these traditional stoves lack adequate dust removal equipment at the flue outlet, resulting in large amounts of dusty flue gas being directly released into the atmosphere, causing air pollution. Moreover, the existing stoves' designs do not conform to Tibetan aesthetics and their style does not blend with the overall environment of Tibetan dwellings (e.g., home decoration), lacking distinctive ethnic cultural characteristics.

[0004] Therefore, there is an urgent need to develop an energy-saving and environmentally friendly stove that uses gasification combustion, has flexible air volume adjustment, produces little air pollution, and has a Tibetan style, in order to meet the daily needs of Tibetan residents. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a civilian biomass gasification device to solve the problems of incomplete combustion, low thermal efficiency, large heat energy waste, significant air pollution, and inconsistent appearance and style with Tibetan aesthetics caused by the quantitative natural primary air supply in existing heating stoves used by Tibetan residents.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A civilian biomass gasification device, comprising: A gasifier, placed indoors, is used for heating and cooking food; The blower, placed indoors, has an adjustable airflow speed; A dust collector, installed on an exterior wall, is used to purify the flue gas emitted from the gasifier; and The control box, mounted on the interior wall, is used to control the operation of the blower and dust collector; The gasifier is provided with a combustion chamber, a gasification chamber, a heating chamber and a dust removal chamber connected in sequence. The combustion chamber is provided with a first to a third air duct connected in sequence and located in the gasifier. The first air duct is connected to the blower, and the second and third air ducts are connected to the combustion chamber and the gasification chamber respectively to introduce secondary air.

[0007] In one embodiment disclosed in this application, the combustion chamber has a feeding port, which is located in the middle of the front end of the gasifier, and the feeding port is connected to a feeding cover via a hinge; The gasification chamber is located directly above the combustion chamber, the heating chamber is located above the gasification chamber, and the dust removal chamber is located behind the combustion chamber and separated from it. The dust removal chamber has a flue gas outlet, which is located on the upper side of the rear end of the gasifier. The flue gas outlet is connected to a smoke bag, which is connected to the air inlet of the dust collector through a smoke pipe. The blower and dust collector are electrically connected to the control box.

[0008] In one embodiment disclosed in this application, the first air duct is located below the side of the combustion chamber near the dust removal chamber and is arranged horizontally along the width direction of the gasifier. The inlet of the first air duct is connected to the outlet of the blower through a pipe. The second air duct is arranged horizontally along the length of the gasifier outside the combustion chamber, with one end connected to the first air duct. The second air duct is provided with a number of secondary air holes to communicate with the combustion chamber. The third air duct is arranged vertically along the height of the gasifier outside the combustion chamber, with its lower end connected to the other end of the second air duct and its upper end connected to the gasification chamber.

[0009] In one embodiment disclosed in this application, the cross-sections of the first air duct and the second air duct are both right-angled triangular structures, and the hypotenuse is used as the sidewall of the combustion chamber. The third air duct has a rectangular cross-section, with two adjacent sides located within the combustion chamber. The second and third air ducts are each provided in pairs, and are symmetrically located at both ends of the first air duct; Each of the secondary air holes is provided with a guide groove, which extends spirally along the direction of the secondary air flow.

[0010] In one embodiment disclosed in this application, the combustion chamber is separated from the dust removal chamber by a fourth air duct with a rectangular cross-section; The bottom of the fourth air duct is equipped with a tertiary air inlet that connects to the outside. The lower side of the fourth air duct is back-to-back with the first air duct, and the upper side has a rectangular through hole to communicate with the gasification chamber.

[0011] In one embodiment disclosed in this application, the vaporization chamber includes an air inlet area and a vaporization pipe located at the center of the air inlet area. The air inlet area is connected to the third air duct and the fourth air duct respectively. The vaporization pipe is provided with a plurality of circumferentially distributed vaporization holes to communicate with the air inlet area. The air intake area is provided with a truncated cone cover to cover the combustion chamber and a horizontal partition to separate the heating chamber. The combustion chamber is connected to the heating chamber via the vaporization pipe.

[0012] In one embodiment disclosed in this application, the heating chamber extends rearward above the dust removal chamber, and a main burner and an auxiliary burner are provided on the platform of the gasification furnace at the top. The main stove opening is located directly above the gasification chamber, and a first pot ring assembly is movably embedded therein; The auxiliary stove is located above the dust removal chamber, and a second pot ring assembly is movably embedded therein; The first pot ring assembly and the second pot ring assembly each include multiple pot ring bodies of different diameters that are nested and stacked together, and the smallest pot ring body is movably covered with a dust cover.

[0013] In one embodiment disclosed in this application, a fire baffle with dust collection holes is provided at the top of the dust removal chamber; One end of the fire baffle plate overlaps the horizontal partition plate, and the other end extends upward at an angle to connect with the top of the inner surface of the platform. Two ash collection holes are provided symmetrically to the secondary stove opening.

[0014] In one embodiment disclosed in this application, an ash collection chamber is provided in the gasifier below the combustion chamber, and a furnace bridge is laid between the combustion chamber and the ash collection chamber; The ash collection chamber is equipped with an ash extractor that can be drawn out from the front end of the gasifier to collect the ash and slag produced in the combustion chamber. The front panel of the ash extractor is equipped with an adjustable damper for adjusting the primary air volume entering the combustion chamber. The gasifier below the flue gas outlet is equipped with an ash removal port, and the ash removal port is movably connected to a baffle.

[0015] In one embodiment disclosed in this application, the gasifier has an overall Tibetan style to match Tibetan aesthetics.

[0016] In one embodiment disclosed in this application, the dust collector includes: The dust collection container is equipped with a purification channel with an air inlet and an air outlet; The dust removal mechanism, located within the purification channel, is equipped with multiple cooperating dust collection electrodes and discharge electrodes; and A high-voltage power supply is integrated inside the dust removal container and electrically connected to the control box; The air inlet is connected to the flue pipe to introduce the flue gas discharged from the gasifier, and the air outlet is connected to a vent pipe; each of the dust collecting electrodes is connected to the positive terminal of the high-voltage power supply, and each of the discharge electrodes is connected to the negative terminal of the high-voltage power supply.

[0017] In one embodiment disclosed in this application, each of the dust collecting electrodes includes a conductive conduit, and each of the discharge electrodes is suspended in the conductive conduit in a one-to-one manner; Multiple conductive pipes are arranged in a dense pattern to form a honeycomb structure, which is used to generate a honeycomb-shaped dust removal electric field to capture charged dust in flue gas.

[0018] In one embodiment disclosed in this application, the dust collector further includes a flow-promoting mechanism; The flow-promoting mechanism is located between the air outlet and the dust removal mechanism to accelerate the flue gas flow rate in the purification channel.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. By introducing adjustable secondary air into the combustion chamber and gasification chamber through the first to third air ducts via a blower, the particulate-containing flue gas generated in the combustion chamber can be subjected to secondary combustion to achieve full utilization, resulting in high combustion efficiency and reduced heat energy waste. The flue gas is also purified by a dust collector, reducing particulate emissions through a double protection of "source + end", which is both energy-saving and environmentally friendly. At the same time, it overcomes the uncontrollable defects of primary air (natural air supply) and can meet the needs of Tibetan residents for clean, efficient and environmentally friendly heating.

[0020] 2. The fourth air duct, which connects to the outside, can increase the oxygen content in the gasification chamber, enhance the combustion effect of particulate matter-containing flue gas, and further reduce heat energy waste and particulate matter emissions.

[0021] 3. By placing or removing pot ring bodies of different diameters at the main and auxiliary burner openings, cooking utensils of different sizes (such as pots or kettles) can be placed on them, thus enabling food to be cooked while keeping warm; and both the first and second pot ring components are installed in a movable embedded manner so that they do not protrude from the platform, improving the aesthetics of the gasifier.

[0022] 4. The heating chamber extending backward to the top of the dust removal chamber and the baffle plate installed at the top of the dust removal chamber enable cooking appliance heating and physical dust removal, which can reduce heat energy waste and particulate matter emissions.

[0023] 5. The overall appearance of the stove is in Tibetan style to match Tibetan aesthetics and blend in with the overall environment of Tibetan dwellings, giving it the characteristics of ethnic minority culture.

[0024] 6. Electrostatic dust removal by the dust removal mechanism completes the purification treatment of flue gas at the end, effectively reducing particulate matter emissions and thus avoiding air pollution. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the elevation structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the gasifier; Figure 3 This is a schematic diagram of the axonal plane structure of the gasifier; Figure 4 This is a schematic diagram of the right cross-section of the gasifier; Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the middle AA direction; Figure 6 This is a schematic diagram of the three-dimensional structure of the gasifier after it has been cut in half. Figure 7 In order to be in Figure 6 A schematic diagram of the three-dimensional structure after partial cross-section above; Figure 8 This is a schematic diagram of the main structure of the dust collector. Figure 9 This is a top view of the dust collector. Figure 10 This is a schematic diagram of the dust collector's left-side structure; Figure 11 This is a schematic diagram of the dust collector from the right side. Figure 12 This is a schematic diagram of the main structure of the control box.

[0027] The annotations in the attached figures are explained as follows: 100. Gasifier; 110. Ash collection chamber; 111. Ash extractor; 120. Combustion chamber; 121. First air duct; 122. Second air duct; 123. Third air duct; 124. Fourth air duct; 125. Tertiary air inlet; 126. Rectangular through hole; 127. Feeding port; 128. Feeding cover; 129. Movable cover plate; 130. Gasification chamber; 131. Air inlet area; 132. Gasification pipe; 133. Gasification hole; 134. Frustum hood; 135. Horizontal partition plate; 140. Heating chamber; 141. First boiler ring assembly; 142. Second boiler ring assembly; 150. Dust removal chamber; 151. Smoke outlet; 152. Fire baffle plate; 153. Smoke bag; 154. Baffle plate; 155. Smoke pipe; 160. Platform. 200. Dust collector; 210. Dust collection container; 211. Air inlet; 212. Air outlet; 220. Dust collection mechanism; 221. Dust collection electrode; 222. Discharge electrode; 230. High voltage power supply; 240. Flow promotion mechanism. 300. Control box. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention.

[0034] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] See Figures 1-12 As shown, the present invention provides a civilian biomass gasification device, comprising: Gasifier 100, placed indoors, is used for heating and cooking food; A blower (not shown in the picture) is placed indoors, and its wind speed is adjustable; Dust collector 200, installed on the exterior wall, is used to purify the flue gas discharged from gasifier 100; and The control box 300 is installed on the indoor wall and is used to control the operation of the blower and the dust collector 200. The gasifier 100 is provided with a combustion chamber 120, a gasification chamber 130, a heating chamber 140 and a dust removal chamber 150 connected in sequence. Outside the combustion chamber 120, there are first to third air ducts connected in sequence and located inside the gasifier 100. The first air duct 121 is connected to a blower, and the second air duct 122 and the third air duct 123 are connected to the combustion chamber 120 and the gasification chamber 130 respectively to introduce secondary air.

[0036] Specifically, the combustion chamber 120 has a feeding port 127, which is located at the front center of the gasifier 100. The feeding port 127 is connected to a feeding cover 128 via a hinge (the feeding port 127 can be opened and closed by rotating the feeding cover 128 back and forth). The gasification chamber 130 is located directly above the combustion chamber 120, the heating chamber 140 is located above the gasification chamber 130, and the dust removal chamber 150 is located behind the combustion chamber 120 and separated from it. The dust removal chamber 150 has a flue gas outlet 151, which is located on the upper side of the rear end of the gasifier 100. The flue gas outlet 151 is connected to a smoke pack 153, which is connected to the air inlet 211 of the dust collector 200 via a smoke pipe 155. The blower and the dust collector 200 are electrically connected to the control box 300.

[0037] In use, first rotate the hinge shaft to open the feeding cover 128 to put biomass fuel, such as firewood, into the combustion chamber 120 through the feeding port 127. Then ignite it to make it burn directly (primary combustion, the required air comes from the primary air introduced through the feeding port 127) and produce flue gas containing particulate matter. As the firewood continues to burn, the temperature of the combustion chamber 120 (i.e., the furnace) rises. After reaching a certain temperature, the unburned firewood is gasified into wood gas under the action of gasification principle. The wood gas mixes with the flue gas containing particulate matter and rises upward. At the same time, the blower and dust collector 200 are turned on through the control box 300. The blower pumps outside air into the first to third air ducts and exchanges heat with the combustion chamber 120 and flue gas to obtain preheated secondary air with a higher temperature. Part of the secondary air exits the second air duct 122 and enters the combustion chamber 120 to increase its oxygen content, thereby making the firewood burn completely and reducing particulate matter in the flue gas. The other part of the secondary air exits the third air duct 123 and enters the combustion chamber 120. The flue gas enters the gasification chamber 130 and mixes with the rising wood gas and particulate-containing flue gas, undergoing secondary combustion. This significantly reduces particulate matter in the flue gas (verified to reduce particulate matter emissions by more than 50% compared to existing heating boilers). The flue gas then enters the heating chamber 140 to provide heat (e.g., for heating cooking utensils). Finally, under the positive pressure of the blower, the flue gas, having released heat in the heating chamber 140, enters the dust removal chamber 150 for preliminary dust removal. It then passes through the exhaust port 151, smoke bag 153, and smoke pipe 155 into the dust collector 200 for further purification before being discharged into the atmosphere (verified to further reduce particulate matter emissions by more than 30%). Throughout this process, the blower speed can be adjusted according to the firepower and exhaust conditions to regulate the secondary air volume introduced into the combustion chamber 120 and gasification chamber 130, ensuring precise air supply corresponding to different fuel types and combustion stages. In other words, by introducing adjustable secondary air into the combustion chamber 120 and the gasification chamber 130 through the first to third air ducts via a blower, the particulate-containing flue gas generated in the combustion chamber 120 can be subjected to secondary combustion to achieve full utilization, resulting in high combustion efficiency and reduced heat energy waste. The flue gas is also purified by a dust collector 200, reducing particulate emissions through a double-insurance approach of "source + end," which is both energy-saving and environmentally friendly. At the same time, it overcomes the uncontrollable defects of primary air (natural air supply) and can meet the needs of Tibetan residents for clean, efficient, and environmentally friendly heating.

[0038] The first air duct 121 is located below the side of the combustion chamber 120 near the dust removal chamber 150 and is arranged horizontally along the width of the gasifier 100. The inlet of the first air duct 121 (at...) Figure 2 and Figure 3The first air duct 121 is covered by a movable cover plate 129 and connected to the blower outlet via a pipe; the second air duct 122 is horizontally arranged along the length of the gasifier 100 outside the combustion chamber 120, with one end connected to the first air duct 121. The second air duct 122 (facing the combustion chamber 120) has several secondary air holes for communication with the combustion chamber 120; the third air duct 123 is vertically arranged along the height of the gasifier 100 outside the combustion chamber 120, with one lower end connected to the other end of the second air duct 122 and the upper end connected to the gasification chamber 130. Thus, through the rational arrangement of the first to third air ducts, the outside air pumped in by the blower can exchange heat with the combustion chamber 120 and the flue gas as it flows through each duct, obtaining fully preheated secondary air, which is beneficial for the secondary combustion of particulate-containing flue gas and greatly improves combustion efficiency.

[0039] In this embodiment, the cross-sections of both the first air duct 121 and the second air duct 122 are right-angled triangular structures (see details). Figures 4-7 (As shown), the surface with its hypotenuse is used as the side wall of the combustion chamber 120, and the cross-section of the third air duct 123 is rectangular (see details). Figure 7 As shown), one of its two adjacent sides is located within the combustion chamber 120, and a pair of second air ducts 122 and third air ducts 123 are each provided, symmetrically located at both ends of the first air duct 121 (arranged on the left and right outer sides of the combustion chamber 120); each secondary air duct is provided with a guide groove, which extends spirally along the flow direction of the secondary air. In this way, the heat exchange area between the first to third air ducts and the combustion chamber 120 is large, which can greatly improve the temperature of the preheated secondary air. At the same time, the secondary air forms a spiral turbulence through the spiral guide groove, which can disturb the flue gas in the combustion chamber 120, thereby achieving full mixing of secondary air and flue gas, and further improving combustion efficiency.

[0040] Combustion chamber 120 is separated from dust removal chamber 150 by a fourth air duct 124 with a rectangular cross-section. The bottom of the fourth air duct 124 has a tertiary air inlet 125 connecting to the outside. The lower side of the fourth air duct 124 is back-to-back with the first air duct 121, and the upper side has a rectangular through-hole 126 connecting to the gasification chamber 130. Outside air enters the fourth air duct 124 through the tertiary air inlet 125 and exchanges heat with the combustion chamber 120 and flue gas, becoming preheated tertiary air. This tertiary air then flows upward through the rectangular through-hole 126 into the gasification chamber 130 to increase the oxygen content, thereby mixing with the wood gas and particulate-containing flue gas for vigorous combustion. This ensures complete combustion of the particulate-containing flue gas, enhancing its combustion efficiency. In other words, the fourth air duct 124, connecting to the outside, increases the oxygen content in the gasification chamber 130, enhancing the combustion efficiency of the particulate-containing flue gas and further reducing heat waste and particulate emissions.

[0041] The gasification chamber 130 includes an air intake zone 131 and a gasification pipe 132 located at the center of the air intake zone 131. The air intake zone 131 is connected to the third air duct 123 and the fourth air duct 124 respectively. The gasification pipe 132 is provided with a number of circumferentially distributed gasification holes 133 to communicate with the air intake zone 131. The air intake zone is provided with a truncated cone cover 134 to cover the combustion chamber 120 and a horizontal partition 135 to separate the heating chamber 140. The combustion chamber 120 is connected to the heating chamber 140 through the gasification pipe 132. The secondary air from the third air duct 123 and the tertiary air from the fourth air duct 124 enter the gasification pipe 132 through the gasification holes 133 after passing through the air intake zone 131, thereby mixing with the wood gas and particulate matter-containing flue gas passing through the gasification pipe 132 and undergoing violent combustion.

[0042] The heating chamber 140 extends rearward above the dust removal chamber 150. The main burner and the auxiliary burner are provided on the platform 160 of the gasification furnace 100 at the top. The main burner is located directly above the gasification chamber 130, and a first pot ring assembly 141 is movably embedded therein (i.e., the first pot ring assembly 141 is flush with the platform 160). The auxiliary burner is located above the dust removal chamber 150, and a second pot ring assembly 142 is movably embedded therein (i.e., the second pot ring assembly 142 is flush with the platform 160). The first pot ring assembly 141 and the second pot ring assembly 142 each include multiple pot ring bodies of different diameters that are nested and stacked together. The smallest pot ring body is movably covered with a dust cover. In other words, by placing or removing pot ring bodies of different diameters at the main and auxiliary burner openings, cooking utensils of different sizes (such as pots or kettles) can be placed on them, thus enabling food to be cooked while keeping warm; and the first pot ring assembly 141 and the second pot ring assembly 142 are both installed in a movable embedded manner so that they do not protrude from the platform 160, thus improving the aesthetics of the gasifier 100.

[0043] The top of the dust removal chamber 150 is equipped with a fire baffle 152 with dust collection holes. One end of the fire baffle 152 is attached to the horizontal partition 135, and the other end extends upward to connect with the top of the countertop 160. There are two dust collection holes symmetrically arranged with respect to the auxiliary stove opening.

[0044] A gasifier 100 below the combustion chamber 120 is provided with an ash collection chamber 110, and a furnace bridge (not shown in the figure) is laid between the combustion chamber 120 and the ash collection chamber 110. The ash collection chamber 110 is movably provided with an ash extractor 111 that can be drawn out from the front end of the gasifier 100 for collecting ash and slag produced by the combustion chamber 120. An adjustable damper is provided on the front plate of the ash extractor 111 for adjusting the primary air volume entering the combustion chamber 120. A cleaning port is provided on the gasifier 100 below the flue gas outlet 151, and a baffle 154 is movably inserted into the cleaning port. Biomass fuel undergoes primary combustion in combustion chamber 120, producing particulate-containing flue gas and most of the ash. Most of the ash falls through the furnace bridge into the ash collection chamber 110 via the ash extractor 111. The volume of primary air entering combustion chamber 120 is adjusted by rotating an adjustable damper according to the firepower and exhaust conditions. Adjustable secondary air introduced by a blower through the first to third air ducts and tertiary air naturally introduced through the fourth air duct 124 cause the particulate-containing flue gas to undergo secondary combustion in the gasification pipe 132 of gasification chamber 130. The resulting heat or firepower rises into the combustion chamber. The heating chamber 140 first heats the cookware on the main burner, and then, under the action of the baffle plate 152, heats the cookware on the auxiliary burner. A small amount of ash entering the heating chamber 140 is blown downwards by the wind and its own gravity, falling through the ash collection holes of the baffle plate 152 to the bottom of the dust collection chamber 150, thus achieving preliminary dust removal. The flue gas, after preliminary dust removal, enters the dust collector 200 through the exhaust port 151, the smoke bag 153, and the smoke pipe 155 for further purification before being discharged into the atmosphere. A small amount of ash at the bottom of the dust collection chamber 150 can be removed from the ash removal port after removing the baffle plate 154. In other words, the heating chamber 140 extending rearward above the dust collection chamber 150 and the baffle plate 152 installed at the top of the dust collection chamber 150 achieve both cookware heating and physical dust removal, reducing heat waste and particulate matter emissions.

[0045] The gasifier 100 features a Tibetan style in its overall appearance, designed to align with Tibetan aesthetics. For example, the fuel filling cover 128 is inlaid with a golden lion's head decoration, and the side panels of the gasifier 100 are inlaid with auspicious eight treasures patterns, fire god plaques, and gold-edged appliqués (see details). Figure 2 and Figure 3 (As shown).

[0046] Dust collector 200 includes: The dust collection container 210 is equipped with a purification channel with an air inlet 211 and an air outlet 212; The dust removal mechanism 220, located within the purification channel, is equipped with multiple cooperating dust collection electrodes 221 and discharge electrodes 222; and A high-voltage power supply 230 is integrated inside the dust collection container 210 and electrically connected to the control box 300; The air inlet 211 is connected to the flue pipe 155 to introduce the flue gas discharged from the gasifier 100, and the air outlet 212 is connected to the vent pipe; each dust collection electrode 221 is connected to the positive terminal of the high-voltage power supply 230, and each discharge electrode 222 is connected to the negative terminal of the high-voltage power supply 230.

[0047] Specifically, each dust collection electrode 221 includes a conductive pipe, and each discharge electrode 222 is suspended in the conductive pipe in a one-to-one manner; multiple conductive pipes are densely arranged to form a honeycomb shape, which is used to generate a honeycomb dust removal electric field to capture charged dust in the flue gas.

[0048] The flue gas discharged from the gasifier 100 enters the purification channel through the inlet 211 via the flue pipe 155. In the purification channel, the dust removal mechanism 220 utilizes the principle of electrostatic dust removal. When the dust-laden flue gas passes through the honeycomb-shaped dust removal electric field, it is ionized by the strong electric field. The dust particles combine with negative ions to become charged dust, which then moves towards the collecting electrode 221 (positive electrode) and deposits there, thus achieving the capture and purification of the charged dust in the flue gas. Afterwards, the flue gas is discharged into the atmosphere through the vent pipe from the outlet 212. In other words, the electrostatic dust removal by the dust removal mechanism 220 completes the purification treatment of the flue gas at the end, effectively reducing particulate matter emissions and thus avoiding air pollution.

[0049] The high-voltage power supply 230 is an independent power supply that can be charged by a 220V household power supply, and its working voltage (output voltage) is 20KV; the control box 300 has a built-in 200W power supply, which is used to control the high-voltage power supply 230 to adjust the working status of the dust removal mechanism 220 (such as start, stop, emergency stop, etc.).

[0050] To adapt to the characteristics of high temperature and low flow rate (compared to industrial environments) of the exhaust gas from the gasifier 100, the dust collector 200 also includes a flow-promoting mechanism 240. The flow-promoting mechanism 240 is located between the exhaust port 212 and the dust collection mechanism 220 to accelerate the flow rate of the flue gas in the purification channel. The reasons for setting up the flow-promoting mechanism 240 are as follows: ① High temperature will cause the flue gas density to decrease, and electrostatic dust removal requires a certain mass flow rate of flue gas to pass through the dust collection electric field to effectively remove dust. In order to maintain the same mass flow rate, the required volumetric flow rate of the flue gas must be increased. When the volumetric flow rate of the flue gas increases, in order to pass more flue gas in the channel (conductive pipe) with a limited cross-section, the flue gas velocity will inevitably increase, resulting in an increase in the airflow resistance of the entire dust collector 200. Therefore, it is necessary to add the flow-promoting mechanism 240. ② The flow-promoting mechanism 240 can avoid the risk of high temperature accumulation caused by airflow stagnation, so as to ensure the normal use of the high-voltage power supply 230 and key components in the dust collection electric field (such as the dust collection electrode 221 and the discharge electrode 222).

[0051] In this embodiment, the flow-inducing mechanism 240 is a centrifugal induced draft fan. The centrifugal induced draft fan is electrically connected to the control box 300 and interlocked with the high-voltage power supply 230 and the blower, respectively. The centrifugal induced draft fan can typically provide a large pressure head (pressure boosting capacity). This high pressure head characteristic enables it to overcome the high resistance caused by high-temperature flue gas and forcibly draw in a sufficient volumetric flow rate of flue gas to pass through the dust removal electric field, ensuring a stable airflow velocity within the dust removal electric field that meets design requirements. The operating status of the centrifugal induced draft fan (such as start-up, stop, emergency stop, etc.) is controlled by the control box 300, and the centrifugal induced draft fan and the high-voltage power supply 230 can achieve synchronous start-up and stop between them after interlocking. After the centrifugal induced draft fan and the blower are interlocked, the primary air volume entering the combustion chamber 120 and the tertiary air volume entering the gasification chamber 130 can be adjusted through the adjustable damper and the tertiary air inlet 125, respectively, to accurately supply air for different fuel types and combustion stages.

[0052] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the technical solutions of the present invention. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of the patent of the present invention.

Claims

1. A civilian biomass gasification device, characterized in that, include: A gasifier, placed indoors, is used for heating and cooking food; The blower, placed indoors, has an adjustable airflow speed; A dust collector, installed on the exterior wall, is used to purify the flue gas discharged from the gasifier; and The control box, mounted on the interior wall, is used to control the operation of the blower and dust collector; The gasifier is provided with a combustion chamber, a gasification chamber, a heating chamber and a dust removal chamber connected in sequence. The combustion chamber is provided with a first to a third air duct connected in sequence and located in the gasifier. The first air duct is connected to the blower, and the second and third air ducts are connected to the combustion chamber and the gasification chamber respectively to introduce secondary air.

2. The civilian biomass gasification device according to claim 1, characterized in that: The combustion chamber has a feeding port, which is located at the middle of the front end of the gasifier. The feeding port is connected to a feeding cover via a hinge. The gasification chamber is located directly above the combustion chamber, the heating chamber is located above the gasification chamber, and the dust removal chamber is located behind the combustion chamber and separated from it. The dust removal chamber has a flue gas outlet, which is located on the upper side of the rear end of the gasifier. The flue gas outlet is connected to a smoke bag, which is connected to the air inlet of the dust collector through a smoke pipe. The blower and dust collector are electrically connected to the control box.

3. The civilian biomass gasification device according to claim 2, characterized in that: The first air duct is located below the side of the combustion chamber near the dust removal chamber and is arranged horizontally along the width direction of the gasifier. The inlet of the first air duct is connected to the outlet of the blower through a pipe. The second air duct is arranged horizontally along the length of the gasifier outside the combustion chamber, with one end connected to the first air duct. The second air duct is provided with a number of secondary air holes to communicate with the combustion chamber. The third air duct is arranged vertically along the height of the gasifier outside the combustion chamber, with its lower end connected to the other end of the second air duct and its upper end connected to the gasification chamber.

4. The civilian biomass gasification device according to claim 3, characterized in that: The cross-sections of both the first and second air ducts are right-angled triangular structures, and the hypotenuse of the ducts is used as the sidewall of the combustion chamber. The third air duct has a rectangular cross-section, with two adjacent sides located within the combustion chamber. The second and third air ducts are each provided in pairs, and are symmetrically located at both ends of the first air duct; Each of the secondary air holes is provided with a guide groove, which extends spirally along the direction of the secondary air flow.

5. The civilian biomass gasification device according to claim 3 or 4, characterized in that: The combustion chamber is separated from the dust removal chamber by a fourth air duct with a rectangular cross-section; The bottom of the fourth air duct is equipped with a tertiary air inlet that connects to the outside. The lower side of the fourth air duct is back-to-back with the first air duct, and the upper side has a rectangular through hole to communicate with the gasification chamber.

6. The civilian biomass gasification device according to claim 5, characterized in that: The vaporization chamber includes an air inlet area and a vaporization pipe located at the center of the air inlet area. The air inlet area is connected to the third air duct and the fourth air duct respectively. The vaporization pipe is provided with a plurality of circumferentially distributed vaporization holes to communicate with the air inlet area. The air intake area is provided with a truncated cone cover to cover the combustion chamber and a horizontal partition to separate the heating chamber. The combustion chamber is connected to the heating chamber via the vaporization pipe.

7. The civilian biomass gasification device according to claim 6, characterized in that: The heating chamber extends rearward above the dust removal chamber, and a main burner and an auxiliary burner are provided on the platform of the gasifier at the top. The main stove opening is located directly above the gasification chamber, and a first pot ring assembly is movably embedded therein; The auxiliary stove is located above the dust removal chamber, and a second pot ring assembly is movably embedded therein; The first pot ring assembly and the second pot ring assembly each include multiple pot ring bodies of different diameters that are nested and stacked together, and the smallest pot ring body is movably covered with a dust cover.

8. The civilian biomass gasification device according to claim 7, characterized in that: The dust removal chamber is equipped with a fire baffle plate with dust collection holes at the top; One end of the fire baffle plate overlaps the horizontal partition plate, and the other end extends upward at an angle to connect with the top of the inner surface of the platform. Two ash collection holes are provided symmetrically to the secondary stove opening.

9. The civilian biomass gasification device according to claim 2, characterized in that: The gasifier below the combustion chamber is equipped with an ash collection chamber, and a furnace bridge is laid between the combustion chamber and the ash collection chamber. The ash collection chamber is equipped with an ash extractor that can be drawn out from the front end of the gasifier to collect the ash and slag produced in the combustion chamber. The front panel of the ash extractor is equipped with an adjustable damper for adjusting the primary air volume entering the combustion chamber. The gasifier below the flue gas outlet is equipped with an ash removal port, and the ash removal port is movably connected to a baffle.

10. The civilian biomass gasification device according to claim 1 or 9, characterized in that, The gasifier has a Tibetan style overall appearance to match Tibetan aesthetics.

11. The civilian biomass gasification device according to any one of claims 2-4 and 6-9, characterized in that, The dust collector includes: The dust collection container is equipped with a purification channel with an air inlet and an air outlet; The dust removal mechanism, located within the purification channel, is equipped with multiple cooperating dust collection electrodes and discharge electrodes; and A high-voltage power supply is integrated inside the dust removal container and electrically connected to the control box; The air inlet is connected to the flue pipe to introduce the flue gas discharged from the gasifier, and the air outlet is connected to a vent pipe; each of the dust collecting electrodes is connected to the positive terminal of the high-voltage power supply, and each of the discharge electrodes is connected to the negative terminal of the high-voltage power supply.

12. The civilian biomass gasification device according to claim 11, characterized in that: Each of the dust collection electrodes includes a conductive conduit, and each of the discharge electrodes is suspended in the conductive conduit in a one-to-one manner. Multiple conductive pipes are arranged in a dense pattern to form a honeycomb structure, which is used to generate a honeycomb-shaped dust removal electric field to capture charged dust in flue gas.

13. The civilian biomass gasification device according to claim 11, characterized in that: The dust collector also includes a flow-promoting mechanism; The flow-promoting mechanism is located between the air outlet and the dust removal mechanism to accelerate the flue gas flow rate in the purification channel.

Images