Furnace with internal circulation return air gasification structure

Abstract

The utility model provides a stove with an internal circulation return air gasification structure, which comprises a stove assembly and a smoke and air exhaust mechanism, and the stove assembly comprises an incinerator body, a base and a pot seat; wherein the base is fixedly connected to the bottom of the incinerator body, the pot base is arranged above the incinerator body, and a gasification combustion mechanism is fixedly connected between the incinerator body and the pot base; according to the utility model, high-temperature flue gas in the pot seat is conveyed outdoors by utilizing the smoke exhaust pipe, and external low-temperature air is guided by utilizing the air inlet pipe, so that the exhausted high-temperature flue gas is utilized to heat the introduced external low-temperature air, and the air is introduced into the base by utilizing the induced draft fan while the heat is recycled; and sufficient oxygen-containing air is provided for the furnace, so that biomass can be fully combusted in the furnace, the big fire advantage of the air return furnace is effectively exerted, the requirement of the furnace for indoor air is reduced, and carbon monoxide poisoning events are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fire stove, in particular to a fire stove with internal circulation back air gasification structure belongs to fire stove technical field. BACKGROUND

[0002] Gasifier is a kind of gasification equipment for converting biomass (mainly wood, crop waste and other firewood) into combustible gas (mainly hydrogen, carbon monoxide and methane). This gasifier is suitable for use in rural areas or other places lacking conventional energy sources, and can provide energy needs such as cooking, heating and lighting.

[0003] Now the fire stove / gasifier is all from the air outside the furnace body, and the air reacts with the fuel in the furnace and is discharged outside from the chimney. This causes the warm air in the room to be discharged outside, and the air pressure difference in the room is supplemented by the door gap, window gap and air guide hole leading to the outside. People will strengthen the sealing of the house or even block the air guide hole leading to the outside to keep warm. The amount of air entering the furnace is less, and the reaction with the fuel is incomplete, resulting in a large amount of smoke being discharged to the outside, directly causing waste of energy and pollution of the environment. If the house is sealed too tightly, the air pressure difference in the room cannot be supplemented by the outside air, and the unextinguished fuel in the furnace will react with the air in the room. Incomplete reaction of oxygen-containing air entering the furnace from the bottom of the furnace body with the fuel in the furnace will produce carbon monoxide, which will be discharged to the room through the gap of the furnace cover or smoke pipe, often causing carbon monoxide poisoning.

[0004] And the smoke pipe used in the existing fire stove / gasifier is mostly single-layer structure, the heat generated by the fire stove is discharged to the outside along with the smoke, and the heat generated by the fuel cannot be effectively utilized, which easily causes waste of heat energy. Therefore, a fire stove with internal circulation back air gasification structure is proposed. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the utility model provides a fire stove with internal circulation back air gasification structure to solve or alleviate the technical problems in the prior art, and at least provides a beneficial choice.

[0006] The technical scheme of the utility model embodiment is implemented as follows: a fire stove with internal circulation back air gasification structure, comprising a fire stove assembly and a smoke exhaust and air intake mechanism, the fire stove assembly comprising a incineration furnace body, a base and a pot seat;

[0007] The base is fixedly connected to the bottom of the incineration furnace body, the pot seat is arranged above the incineration furnace body, and the incineration furnace body and the pot seat are fixedly connected with a gasification combustion mechanism, and the smoke exhaust and air intake mechanism is installed on one side of the pot seat, the gasification combustion mechanism and the base;

[0008] The smoke exhaust air inlet mechanism is used for exhausting the flue gas in the pot seat and conveying outdoor air to the inside of the base and the gasification combustion mechanism.

[0009] The one end of the smoke exhaust pipe is communicated with one side of the pot seat and extends to the outdoor. The air inlet pipe is fixedly connected to the inner side wall of the smoke exhaust pipe. The air induction fan is arranged on one side of the incinerator body. The one end of the air inlet pipe extends to the outdoor through the inner side wall of the smoke exhaust pipe. The other end of the air inlet pipe penetrates the inner side wall of the smoke exhaust pipe and is communicated with the air inlet of the air induction fan.

[0010] The gasification combustion mechanism is used for promoting the gasification combustion in the incinerator body by using the air supply provided by the smoke exhaust air inlet mechanism.

[0011] Further preferably, the gasification combustion mechanism comprises a gasification cover, a gasification shunt cavity and a plurality of air guide holes.

[0012] The bottom of the gasification cover is fixedly connected to the middle part of the outer side wall of the incinerator body. The top of the gasification cover is fixedly connected to the bottom of the pot seat. The gasification shunt cavity is arranged between the gasification cover and the incinerator body. The plurality of air guide holes are arranged on the top of the outer side wall of the incinerator body.

[0013] Further preferably, the smoke exhaust air inlet mechanism further comprises a first air supply pipe and a second air supply pipe.

[0014] The one end of the second air supply pipe penetrates the gasification cover and is communicated with the inside of the gasification shunt cavity. The other end of the second air supply pipe is communicated with one side of the outer side wall of the air induction fan. The one end of the first air supply pipe is communicated with one side of the base. The other end of the first air supply pipe is communicated with the other side of the outer side wall of the air induction fan.

[0015] Further preferably, the bottom of the outer side wall of the incinerator body is communicated with a charging cylinder. The charging cylinder is hingedly connected with a sealing door on one side.

[0016] Further preferably, the bottom of the inner side wall of the base is slidingly connected with an ash hopper. The bottom of the inner side wall of the incinerator body is mounted with an ash leakage plate. One side of the base is hingedly connected with a sealing ash bin cover.

[0017] Further preferably, the upper surface of the pot seat is mounted with a pot ring cover. One side of the upper surface of the pot seat is hingedly connected with a sealing furnace cover. The surface of the sealing furnace cover is covered with the pot ring cover.

[0018] Further preferably, the middle part of the first air supply pipe is mounted with a first on-off valve. The middle part of the second air supply pipe is mounted with a second on-off valve.

[0019] The embodiment of the utility model has the following advantages because of adopting the above technical scheme.

[0020] I, the utility model discloses a high-temperature flue gas in the pot seat is transported to the outdoor by using the smoke exhaust pipe, and the low-temperature air of outside is guided by using the air inlet pipe, so as to heat the guided low-temperature air of outside by using the high-temperature flue gas of discharge, carry out heat recovery and recycling while using the air induction fan to guide the air into the base, provide sufficient oxygen-containing air for the stove, make the biomass can be fully combusted in the stove, effectively play the big fire advantage of the return air stove, and reduce the demand of the stove to the indoor air, avoid the occurrence of carbon monoxide poisoning event.

[0021] II, the utility model discloses the inside of gasification combustion mechanism by the air induction fan of heating is guided, so as to carry out secondary temperature rising treatment to the air, and the air of secondary temperature rising is guided to the inside wall top of incinerator body and carries out gasification reaction, so as to make the biomass burn more thoroughly in the stove by using the gasification combustion mode, effectively reduce the emission of smoke dust particulate matter, make the stove have the characteristics of energy saving and environmental protection.

[0022] The above summary is only for the purpose of the description, and is not limited in any way. In addition to the above-described illustrative aspects, embodiments and features, further aspects, embodiments and features of the utility model will be readily apparent from the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 It is a sectional structure schematic diagram of the first perspective of the utility model;

[0026] Figure 3 It is a sectional structure schematic diagram of the second perspective of the utility model;

[0027] Figure 4 It is a side view structure schematic diagram of the utility model;

[0028] Figure 5 It is an axial side view of the air inlet pipe of the utility model.

[0029] Figure numerals: 1. furnace assembly; 2. smoke exhaust and air intake mechanism; 3. gasification and combustion mechanism; 101. incineration furnace body; 102. base; 103. pot seat; 201. smoke exhaust pipe; 202. air intake pipe; 203. induced draft fan; 204. first air supply pipe; 205. second air supply pipe; 301. gasification hood; 302. gasification diversion chamber; 303. air guide hole; 41. feeding barrel; 42. sealing door; 43. ash hopper; 44. ash leakage plate; 45. pot ring cover; 46. sealed furnace cover; 47. first switch valve; 48. second switch valve; 49. sealed ash bin cover. DETAILED DESCRIPTION

[0030] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0031] It should be noted that the terms "first," "second," "symmetrical," and "array" are used solely for descriptive and positional purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Therefore, limitations on features such as "first" and "symmetrical" may explicitly or implicitly include one or more of these features. Similarly, when features are not limited in quantity using words such as "two" or "three," it should be noted that these features also explicitly or implicitly include one or more of these features.

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] like Figures 1-5 As shown, the embodiment of the present invention provides a stove with an internal circulation return air gasification structure, including a stove assembly 1 and a smoke exhaust and air intake mechanism 2. The stove assembly 1 includes an incinerator body 101, a base 102 and a pot base 103;

[0034] The base 102 is fixedly connected to the bottom of the incinerator body 101, the pot seat 103 is arranged above the incinerator body 101, the gasification combustion mechanism 3 is fixedly connected between the incinerator body 101 and the pot seat 103, and the smoke exhaust and air intake mechanism 2 is installed on one side of the pot seat 103, the gasification combustion mechanism 3 and the base 102;

[0035] The smoke exhaust and air intake mechanism 2 is used to exhaust the smoke in the pot seat 103 and transport the outdoor air to the interior of the base 102 and the gasification combustion mechanism 3; the smoke exhaust and air intake mechanism 2 includes a smoke exhaust pipe 201, an air intake pipe 202 and an induced draft fan 203;

[0036] The one end of the smoke exhaust pipe 201 is communicated with one side of the pot seat 103 and extends to the outdoor; the air inlet pipe 202 is fixedly connected to the inner side wall of the smoke exhaust pipe 201, the air draught fan 203 is arranged at one side of the incinerator body 101, one end of the air inlet pipe 202 penetrates the inner side wall of the smoke exhaust pipe 201 and extends to the outdoor, and the other end of the air inlet pipe 202 penetrates the inner side wall of the smoke exhaust pipe 201 and is communicated with the air inlet of the air draught fan 203.

[0037] The gasification combustion mechanism 3 is used for promoting the gasification combustion in the incinerator body 101 by using the air supply provided by the smoke exhaust air inlet mechanism 2.

[0038] In one embodiment, the gasification combustion mechanism 3 comprises a gasification cover 301, a gasification shunt cavity 302 and a plurality of air guide holes 303.

[0039] The bottom of the gasification cover 301 is fixedly connected to the middle part of the outer side wall of the incinerator body 101, the top of the gasification cover 301 is fixedly connected to the bottom of the pot seat 103, the gasification shunt cavity 302 is arranged between the gasification cover 301 and the incinerator body 101, and the plurality of air guide holes 303 are all arranged at the top of the outer side wall of the incinerator body 101.

[0040] The air is heated by the temperature in the gasification shunt cavity 302, and then the heated air is discharged into the incinerator body 101 through the air guide holes 303 to carry out the gasification combustion, so as to further gasify and burn the smoke dust particles formed by the insufficient combustion of the biomass.

[0041] In one embodiment, the smoke exhaust air inlet mechanism 2 further comprises a first air supply pipe 204 and a second air supply pipe 205.

[0042] The one end of the second air supply pipe 205 penetrates the gasification cover 301 and is communicated with the inside of the gasification shunt cavity 302, the other end of the second air supply pipe 205 is communicated with one side of the outer side wall of the air draught fan 203, the one end of the first air supply pipe 204 is communicated with one side of the base 102, the other end of the first air supply pipe 204 is communicated with the other side of the outer side wall of the air draught fan 203, the middle part of the first air supply pipe 204 is provided with a first switch valve 47, and the middle part of the second air supply pipe 205 is provided with a second switch valve 48.

[0043] The air flow into the gasification cover 301 through the second air supply pipe 205 is controlled by rotating the second switch valve 48, and the air flow into the base 102 through the first air supply pipe 204 is controlled by rotating the first switch valve 47.

[0044] In one embodiment, the outer side wall of the incinerator body 101 is communicated with a feeding cylinder 41, and the feeding cylinder 41 is hingedly connected with a sealing door 42.

[0045] The sealing door 42 is used for controlling the opening and closing of the feeding cylinder 41.

[0046] In one embodiment, an ash hopper 43 is slidably connected to the bottom of the inner wall of the base 102, an ash leakage plate 44 is installed at the bottom of the inner wall of the incinerator body 101, and a sealed ash bin cover 49 is hinged on one side of the base 102;

[0047] The ash leakage plate 44 is provided so that the ash generated after the biomass combustion can fall into the interior of the ash hopper 43 under the action of gravity for collection, and the opening and closing of one side of the base 102 is controlled by the provided sealed ash bin cover 49.

[0048] In one embodiment, a pot ring cover 45 is installed on the upper surface of the pot base 103, and a sealing furnace cover 46 is hinged on one side of the upper surface of the pot base 103, and the sealing furnace cover 46 covers the surface of the pot ring cover 45;

[0049] The pot ring cover 45 is covered and sealed by using the sealing furnace cover 46 , and the pot ring cover 45 is used to limit the pot body.

[0050] When the utility model is in operation: firstly, the stove is installed as a whole to a designated position according to actual needs.

[0051] When the stove needs to be used, the pot ring cover 45 is exposed by moving the sealed stove cover 46 so that the pot body can be limited on the pot ring cover 45, and then the charging cylinder 41 is opened by moving the sealed door 42 so that the biomass to be burned can be put into the interior of the incinerator body 101 for ignition, so that the burning biomass can be used to heat the pot body; then the high-temperature smoke generated by the combustion in the pot base 103 is discharged to the outside through the smoke exhaust pipe 201.

[0052] When the combustion of the biomass in the incinerator body 101 is stable and a pressure difference is formed, the low-temperature air from the outside is sucked in through the air inlet pipe 202 under the action of the pressure difference, and then the high-temperature flue gas in the exhaust pipe 201 is used to heat the low-temperature air in the air inlet pipe 202, so as to perform a temperature-raising treatment on the air and recover the heat carried by the flue gas. Then, the heated air is introduced into the induced draft fan 203 through the air inlet pipe 202, and the air is introduced into the first air supply pipe 204 and the second air supply pipe 205 by utilizing the gap between the impellers in the induced draft fan 203. Then, the air is discharged through the first air supply pipe 204 and the second air supply pipe 205. 204 guides part of the air into the interior of the base 102 to provide sufficient oxygen-containing air for the incinerator body 101, so that the biomass can be fully burned in the furnace; the second air supply pipe 205 is used to guide part of the air into the gasification hood 301, so that the temperature in the gasification diversion chamber 302 is used to heat the introduced air for a second time, and then the air after the second heating is discharged into the incinerator body 101 through the air guide hole 303 for gasification reaction, so as to further gasify and burn the smoke particles formed by incomplete combustion of the biomass, which can effectively reduce the emission of smoke.

[0053] When the heating / cooking needs to be increased, the air intake pipe 202 is used to quickly suck outdoor air by starting the air blower 203, and the first air supply pipe 204 and the second air supply pipe 205 are used to inject the sucked air into the inside of the base 102 and the gasification cover 301, so as to increase the air intake amount and realize the rapid combustion of the biomass in the incinerator body 101.

[0054] When the combustion speed of the biomass in the incinerator body 101 needs to be adjusted, only the air amount flowing into the base 102 through the first air supply pipe 204 needs to be controlled by rotating the first switch valve 47, so as to adjust the combustion speed of the biomass in the incinerator body 101, and when the gasification combustion effect of the smoke dust particles needs to be adjusted, only the air amount flowing into the gasification cover 301 through the second air supply pipe 205 needs to be controlled by rotating the second switch valve 48, so as to adjust the gasification combustion effect of the smoke dust particles.

[0055] The ash produced after the biomass is burned can fall into the inside of the ash hopper 43 for collection under the action of gravity through the setting of the ash leakage plate 44, and the sealing door 42 and the sealing ash bin cover 49 are used to block one end of the charging cylinder 41 and the base 102, so as to prevent indoor air from being sucked into the inside of the incinerator body 101 or the gas not fully combusted in the incinerator body 101 from being discharged.

[0056] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, and these should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A stove with an internal circulation and air return gasification structure, comprising a stove assembly (1) and a smoke exhaust and air intake mechanism (2), characterized in that: The stove assembly (1) comprises an incinerator body (101), a base (102) and a pot base (103); The base (102) is fixedly connected to the bottom of the incinerator body (101), the pot seat (103) is arranged above the incinerator body (101), a gasification combustion mechanism (3) is fixedly connected between the incinerator body (101) and the pot seat (103), and the smoke exhaust and air intake mechanism (2) is installed on one side of the pot seat (103), the gasification combustion mechanism (3) and the base (102); The smoke exhaust and air intake mechanism (2) is used to exhaust the smoke in the pot seat (103) and transport outdoor air to the interior of the base (102) and the gasification combustion mechanism (3); the smoke exhaust and air intake mechanism (2) comprises a smoke exhaust pipe (201), an air intake pipe (202) and an induced draft fan (203); One end of the smoke exhaust pipe (201) is connected to one side of the pot seat (103) and extends to the outside; the air intake pipe (202) is fixedly connected to the inner wall of the smoke exhaust pipe (201); the induced draft fan (203) is arranged on one side of the incinerator body (101); one end of the air intake pipe (202) passes through the inner wall of the smoke exhaust pipe (201) and extends to the outside; the other end of the air intake pipe (202) passes through the inner wall of the smoke exhaust pipe (201) and is connected to the air inlet of the induced draft fan (203); The gasification and combustion mechanism (3) is used to promote gasification and combustion in the incinerator body (101) by utilizing the air supply provided by the smoke exhaust and air intake mechanism (2).

2. The furnace with an internal circulation and return air gasification structure according to claim 1, characterized in that: The gasification combustion mechanism (3) comprises a gasification hood (301), a gasification diversion cavity (302) and a plurality of gas guide holes (303); The bottom of the gasification hood (301) is fixedly connected to the middle of the outer wall of the incinerator body (101), the top of the gasification hood (301) is fixedly connected to the bottom of the pot seat (103), the gasification diversion chamber (302) is arranged between the gasification hood (301) and the incinerator body (101), and a plurality of the air guide holes (303) are opened at the top of the outer wall of the incinerator body (101).

3. The furnace with an internal circulation and air return gasification structure according to claim 2, characterized in that: The smoke exhaust and air intake mechanism (2) further includes a first air supply pipe (204) and a second air supply pipe (205); One end of the second air supply pipe (205) passes through the gasification hood (301) and is connected to the interior of the gasification diversion chamber (302); the other end of the second air supply pipe (205) is connected to one side of the outer wall of the induced draft fan (203); one end of the first air supply pipe (204) is connected to one side of the base (102); and the other end of the first air supply pipe (204) is connected to the other side of the outer wall of the induced draft fan (203).

4. The furnace with an internal circulation and air return gasification structure according to claim 1, characterized in that: The bottom of the outer side wall of the incinerator body (101) is connected to a feeding cylinder (41), and a sealing door (42) is hinged on one side of the feeding cylinder (41).

5. The furnace with an internal circulation and return air gasification structure according to claim 1, characterized in that: An ash hopper (43) is slidably connected to the bottom of the inner wall of the base (102), an ash leakage plate (44) is installed at the bottom of the inner wall of the incinerator body (101), and a sealed ash bin cover (49) is hinged on one side of the base (102).

6. The furnace with an internal circulation and air return gasification structure according to claim 1, characterized in that: A pot ring cover (45) is installed on the upper surface of the pot seat (103), and a sealing furnace cover (46) is hinged on one side of the upper surface of the pot seat (103), and the sealing furnace cover (46) covers the surface of the pot ring cover (45).

7. The furnace with an internal circulation and air return gasification structure according to claim 3, characterized in that: A first on-off valve (47) is installed in the middle of the first air supply pipe (204), and a second on-off valve (48) is installed in the middle of the second air supply pipe (205).

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