A combustion furnace

Abstract

The application discloses a combustion furnace and relates to the technical field of heating equipment. The combustion furnace comprises an outer supporting mechanism, an inner supporting mechanism and a flow-through assembly. The outer supporting mechanism comprises an outer shell and a bottom disc. The outer shell forms a hollow cylinder. The bottom disc is located at the bottom side of the outer shell. The peripheral wall of the bottom disc is provided with a plurality of air inlet holes. The inner supporting mechanism comprises an inner shell, a flow guide assembly, a heat insulation assembly and a tray assembly. The inner shell is arranged in the hollow cylinder formed by the outer shell. An air flow cavity is formed between the inner shell and the outer shell. The inner shell is arranged around a central axis. The flow guide assembly, the heat insulation assembly and the tray assembly are sequentially arranged along the central axis of the inner shell from bottom to top. The heat insulation assembly and the tray assembly are arranged in the inner part of the inner shell. The flow guide assembly is overlapped between the outer shell and the bottom disc, so that the fuel in the combustion furnace can be fully combusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating equipment, in particular to a combustion furnace. BACKGROUND

[0002] The combustion furnace is generally provided with multiple air flow channels to make the oxygen mixture more sufficient during combustion, so that the fuel combustion is more sufficient, thereby reducing the generation of black smoke during combustion, saving energy and protecting the environment, and reducing pollution emissions.

[0003] The existing furnace body is provided with an air pipe in the inner layer of the furnace body, and a plurality of groups of inner air inlets with different heights corresponding to the central axis of the air pipe are arranged on the part of the air pipe higher than the fuel rack, the inner air inlets are communicated with the outer air inlets, and multi-stage air supply oxygen is realized for the flame in the inner layer of the furnace body, so that the air permeability of the smokeless furnace body is maximized, and the problem of incomplete combustion and black smoke caused by the blockage of the air inlet channel of the inner layer of the furnace body by fuel ash is avoided, the combustion efficiency of the fuel is improved, and the generation of smoke is reduced.

[0004] However, in actual use, it is found that when the fuel accumulated on the fuel rack is too much or the ash accumulated is too much, part of the airflow will be hindered from entering the inner layer of the furnace, which will still cause incomplete combustion and black smoke. SUMMARY

[0005] The purpose of the present application is to provide a combustion furnace to solve the problems in the background art.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: a combustion furnace comprising an outer support mechanism, an inner support mechanism and a flow-through assembly;

[0007] The outer support mechanism comprises an outer shell and a bottom disc, the outer shell forms a hollow column, and the bottom disc is located at the bottom side of the outer shell, and the peripheral wall of the bottom disc is provided with a plurality of air inlets;

[0008] The inner support mechanism comprises an inner shell, a flow guide assembly, a heat insulation assembly and a tray assembly, the inner shell is arranged in the hollow column formed by the outer shell, an airflow cavity is formed between the inner shell and the outer shell, the inner shell is arranged around the central axis, the flow guide assembly, the heat insulation assembly and the tray assembly are sequentially arranged along the central axis of the inner shell from bottom to top, and the heat insulation assembly and the tray assembly are installed in the inner part formed by the inner shell, the flow guide assembly is lapped between the outer shell and the bottom disc, an inlet cavity is formed between the flow guide assembly and the bottom disc, an expansion cavity is formed between the flow guide assembly and the heat insulation assembly, a gas supply cavity is formed between the heat insulation assembly and the tray assembly, and a combustion cavity is formed in the space above the tray assembly;

[0009] The throughflow assembly comprises a plurality of first drainage holes, a plurality of second drainage holes and a plurality of third drainage holes formed on the shell of the inner container, the plurality of first drainage holes, the plurality of second drainage holes and the plurality of third drainage holes are sequentially arranged along the central axis of the inner container from bottom to top, the heat insulation assembly is abutted between the plurality of first drainage holes and the plurality of second drainage holes, the first drainage hole is connected to the flow expansion cavity and the airflow cavity, the second drainage hole is connected to the gas supply cavity and the airflow cavity, and the third drainage hole is located at the upper part of the combustion cavity and communicates with the airflow cavity.

[0010] The application further discloses that the flow guide assembly comprises a third main plate, a third side plate, a plurality of annular grooves, a plurality of second connecting plates, a plurality of connecting holes and a cooling hole.

[0011] The central axis of the inner container overlaps the central axis of the outer shell, and the outer diameter of the inner container is smaller than the inner diameter of the outer shell.

[0012] The third side plate is fixed to the side of the third main plate and is embedded in the inner wall of the lower end of the outer shell, the plurality of annular grooves are arranged on the surface of the third main plate with the center of the third main plate as the center, so that the airflow cavity communicates with the flow inlet cavity, the plurality of connecting holes are arranged between each adjacent annular groove, the plurality of second connecting plates are fixedly connected to the bottom of the inner container and are threadedly connected with the connecting holes located below.

[0013] The application further discloses that the heat insulation assembly comprises a fourth main plate and a fourth side plate.

[0014] The fourth side plate is fixed to the side of the fourth main plate and is fixed to the inner wall of the inner container between the first drainage hole and the second drainage hole, so as to separate the flow inlet cavity and the gas supply cavity.

[0015] The plurality of second drainage holes are fixedly connected with a filter screen.

[0016] The application further discloses that the tray assembly comprises a fifth main plate, a plurality of reinforcing structures, a fifth side plate and a plurality of flow guide holes.

[0017] The fifth side plate is fixed to the side of the fifth main plate, each group of flow guide holes is provided with a plurality of flow guide holes, the plurality of reinforcing structures and the plurality of flow guide holes are sequentially arranged on the side of the fifth main plate with the center of the fifth main plate as the center, and the plurality of reinforcing structures and the plurality of flow guide holes are arranged alternately, the reinforcing structure is recessed on the upper surface of the fifth main plate and is protruded on the lower surface of the fifth main plate.

[0018] The application further discloses that a group of support plates are connected to the lower side of the tray assembly, the group of support plates are in an inverted L shape, the side edges of the support plates are fixedly connected with the inner wall of the inner container and are fixed at a position higher than the position of the second drainage hole.

[0019] The second handle assembly is arranged in a ring shape, the locking bolt is fixed at the bottom center of the second handle, the locking bolt penetrates the fifth main plate and is threadedly connected with the second locking nut.

[0020] The second handle is arranged in a ring shape, the locking bolt is fixed at the bottom center of the second handle, the locking bolt penetrates the fifth main plate and is threadedly connected with the second locking nut.

[0021] The locking assembly is arranged in the air flow cavity, and the locking assembly comprises a plurality of first locking holes, a plurality of second locking holes, a plurality of third connecting plates and a plurality of first locking nuts.

[0022] The plurality of first locking holes and the plurality of second locking holes are arranged in a one-to-one correspondence on the inner wall of the inner container shell, the first locking hole is located above the third drainage hole, the second locking hole is located above the tray assembly, the third connecting plate is arranged in a one-to-one correspondence with the first locking hole and the second locking hole, one side of the third connecting plate away from the inner container shell is fixedly connected with the inner wall of the outer shell, and the other side of the third connecting plate close to the inner container shell is locked and connected with the first locking hole and the second locking hole by the first locking nut.

[0023] The combustion furnace further comprises an upper ring assembly, and the upper ring assembly comprises a second main plate, a first side plate, a plurality of first connecting plates and a second side plate.

[0024] The second main plate is arranged in an open manner at the surface above the inner container shell and forms an inner side edge, the first side plate and the second side plate are respectively downwardly protruded and fixed to the outer side edge and the inner side edge of the second main plate, the top of the outer shell is embedded at the connection position of the second main plate and the first side plate, the top of the inner container shell is embedded at the connection position of the second main plate and the second side plate, the plurality of first connecting plates are uniformly fixed to the bottom surface of the second main plate, and the other side surface of the second main plate is threadedly fixed to the surface of the inner container shell.

[0025] The top of the upper ring assembly further comprises a cover plate assembly, and the cover plate assembly comprises a first main plate and a first coiled layer.

[0026] The first coiled layer is fixed to the side of the first main plate and arranged on the upper surface of the second main plate, the lower surface of the first main plate is fixed with a group of fixing pieces, the fixing pieces are in an inverted L shape, and the side edges of the fixing pieces are located inside the second side plate.

[0027] The first main plate is provided with a first handle assembly arranged at the middle portion of the first main plate, and the first handle assembly comprises a placing bin, a first handle and a handle plate.

[0028] The placing bin is arranged at the middle portion of the first main plate, the handle plate is fixedly arranged in the placing bin and is rotationally connected with the first handle, and the first handle can be placed in the placing bin.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] The application forms the inflow cavity, the flow expansion cavity, the combustion cavity and the gas supply cavity by sequentially arranging the bottom disc, the flow guide assembly, the heat insulation assembly and the tray assembly from bottom to top, under the action of natural convection and pressure difference, the cold air in the external space enters the combustion cavity through the inflow cavity, the flow expansion cavity and the gas supply cavity in sequence through the air inlet holes, replenishes the space after the hot air rises and maintains the oxygen supply required for combustion;

[0031] The application divides the air flow entering the inflow cavity into two air flows when the fuel is combusted; one of the air flows enters the flow expansion cavity through the cooling holes, cools the bottom surface of the heat insulation assembly on one hand and fills the cold air flow in the flow expansion cavity on the other hand, and can be uniformly sprayed from the first drainage holes to assist the sufficient and uniform cold air to enter the inside of the inner container shell, so that the fuel can be fully combusted; the other air flow is dispersed into multiple air flows and enters the air flow cavity above, fuses the original air flow to form a fused air flow and enters the combustion cavity to continuously supply oxygen to the fuel; another part of the fused air flow rises to the third drainage hole and enters the space above the tray assembly, the part of the fused air flow with lower temperature sinks and performs secondary combustion on the fuel to fully combust the fuel. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are used to explain the application, and do not constitute a limitation on the application. In the drawings:

[0033] Figure 1 is a schematic diagram of the overall structure of the application;

[0034] Figure 2 is a schematic diagram of the structure of the application Figure 1 ;

[0035] Figure 3 is a schematic diagram of the A area of the application Figure 2 ;

[0036] Figure 4 is a schematic diagram of the inner support mechanism structure of the application;

[0037] Figure 5 is a schematic diagram of the B area of the application Figure 4 ;

[0038] Figure 6 is a schematic diagram of the tray assembly structure of the application;

[0039] Figure 7 is a schematic diagram of the bottom structure of the application Figure 6 ;

[0040] Figure 8 is a bottom view schematic diagram of the liner shell structure of the present application;

[0041] Figure 9 is a sectional view schematic diagram of the present application Figure 1 ;

[0042] Figure 10 is a C area enlarged schematic diagram of the present application Figure 9 ;

[0043] Figure 11 is a bottom view schematic diagram of the cover plate assembly structure of the present application;

[0044] Figure 12 is a schematic diagram of the present application;

[0045] In the figure: 1, outer shell; 2, base plate;

[0046] 3, cover plate assembly; 301, first main plate; 302, first winding layer; 303, fixing piece;

[0047] 4, first handle assembly; 401, placing bin; 402, first handle; 403, handle plate; 5, air inlet hole;

[0048] 6, upper ring assembly; 601, second main plate; 602, first side plate; 603, first connecting plate; 604, second side plate; 7, liner shell;

[0049] 8, flow guide assembly; 801, third main plate; 802, third side plate; 803, annular slot hole; 804, second connecting plate; 805, connecting hole; 806, cooling hole;

[0050] 9, locking assembly; 901, first locking hole; 902, second locking hole; 903, third connecting plate; 904, first locking nut;

[0051] 10, through-flow assembly; 1001, first drainage hole; 1002, second drainage hole; 1003, third drainage hole;

[0052] 11, heat insulation assembly; 1101, fourth main plate; 1102, fourth side plate;

[0053] 12, tray assembly; 1201, fifth main plate; 1202, reinforcing structure; 1203, fifth side plate; 1204, flow guide hole; 13, fire hook;

[0054] 14, second handle assembly; 1401, second locking nut; 1402, locking bolt; 1403, second handle; 15, support plate; 16, filter screen. DETAILED DESCRIPTION

[0055] The technical solutions of the present application will be further described in detail below with reference to the preferred embodiments and the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

[0056] Embodiment 1, please refer to Figures 1-12 The present application provides a technical solution: a combustion furnace, comprising an outer support mechanism and an inner support mechanism, forming a furnace body structure.

[0057] Further, the outer support mechanism comprises an outer shell 1 and a bottom disc 2, the outer shell 1 forms a hollow cylinder, the bottom disc 2 is located at the bottom side of the outer shell 1, and the peripheral wall of the bottom disc 2 is provided with a plurality of air inlet holes 5. Specifically, the bottom disc 2 is placed on a stable ground to ensure the stability of the furnace body during the combustion process. The inner part of the outer shell 1 is used to place fuel and burn in the furnace body. The plurality of air inlet holes 5 are used for the inflow of external space cold air flow.

[0058] The inner support mechanism comprises an inner shell 7, a flow guide assembly 8, a heat insulation assembly 11 and a tray assembly 12. The inner shell 7 is placed in the hollow cylinder formed by the outer shell 1. The central axis of the inner shell 7 overlaps the central axis of the outer shell 1, and the outer diameter of the inner shell 7 is smaller than the inner diameter of the outer shell 1. An air flow cavity is formed between the inner shell 7 and the outer shell 1 to assist the circulation and flow of multiple air flows. The inner shell 7 is arranged around the central axis. The flow guide assembly 8, the heat insulation assembly 11 and the tray assembly 12 are sequentially arranged from bottom to top along the central axis of the inner shell 7. The heat insulation assembly 11 and the tray assembly 12 are installed in the inner part of the inner shell 7. The flow guide assembly 8 is overlapped between the outer shell 1 and the bottom disc 2. An inflow cavity is formed between the flow guide assembly 8 and the bottom disc 2. An expansion cavity is formed between the flow guide assembly 8 and the heat insulation assembly 11. A gas supply cavity is formed between the heat insulation assembly 11 and the tray assembly 12. The space above the tray assembly 12 forms a combustion cavity.

[0059] The tray assembly 12 is used to place the required fuel. After the fuel is ignited, the temperature of the air around the fuel increases and the density decreases. The hot air rises and flows out from above the combustion cavity. Under the action of natural convection and pressure difference, the cold air in the external space enters the combustion cavity through the plurality of air inlet holes 5 in sequence through the inflow cavity, the expansion cavity and the gas supply cavity, to make up the space after the hot air rises, maintain the oxygen supply required for combustion, and ensure the continuous combustion.

[0060] The flow guide assembly 8 comprises a third main plate 801, a third side plate 802, a plurality of annular grooves 803, a plurality of second connecting plates 804, a plurality of connecting holes 805 and a cooling hole 806. The third side plate 802 protrudes upwardly and is fixed to the side of the third main plate 801 and is embedded in the inner wall of the lower end of the shell 1. The plurality of annular grooves 803 are arranged in an array with the center of the third main plate 801 as the center on the surface of the third main plate 801, so that the airflow cavity and the inlet cavity are communicated. The plurality of connecting holes 805 are arranged alternately between each adjacent annular groove 803. The plurality of second connecting plates 804 are fixedly connected to the bottom of the inner container shell 7 and are threadedly connected with the connecting holes 805 located below. The cooling hole 806 is arranged in the middle part of the third main plate 801.

[0061] The combustion furnace further comprises a through-flow assembly 10 comprising a plurality of first flow guide holes 1001, a plurality of second flow guide holes 1002 and a plurality of third flow guide holes 1003 arranged on the shell of the inner container shell 7. The plurality of first flow guide holes 1001, the plurality of second flow guide holes 1002 and the plurality of third flow guide holes 1003 are sequentially arranged along the central axis of the inner container shell 7 from bottom to top. The heat insulation assembly 11 is abutted between the plurality of first flow guide holes 1001 and the plurality of second flow guide holes 1002. The first flow guide hole 1001 is connected to the airflow cavity and the flow expansion cavity. The second flow guide hole 1002 is connected to the gas supply cavity and the airflow cavity. The third flow guide hole 1003 is located in the upper part of the combustion cavity and is communicated with the airflow cavity. The plurality of second flow guide holes 1002 are fixedly connected with a filter screen 16 outside, so as to prevent ash from entering the airflow cavity, the inlet cavity and the flow expansion cavity, and to ensure the cleanliness of the furnace and the normal flow of the airflow.

[0062] Reference Figure 2 、 Figure 4 When the inner container shell 7 is installed, the second connecting plate 804 is correspondingly positioned with the connecting hole 805 on the third main plate 801, and then the thread is locked to complete the preliminary fastening process of the inner container shell 7.

[0063] The shell 1 is sleeved on the outer wall of the inner container shell 7. When the fuel is burned, the airflow entering the inflow cavity is divided into two airflows. One of the airflows enters the diffuser cavity through the cooling hole 806, cools the bottom surface of the heat insulation assembly 11, fills the diffuser cavity with cold air, and is uniformly sprayed from the first drainage hole 1001, which is equivalent to another flow channel for the circulation of cold air, so that sufficient and uniform cold air enters the inner container shell 7, and the fuel can be fully burned. The other airflow is dispersed into multiple airflows and enters the airflow cavity above the airflow cavity through the annular groove hole 803. The multiple airflows and the airflow uniformly sprayed from the first drainage hole 1001 form a mixed airflow, which is then introduced into the gas supply cavity through the second drainage hole 1002. Most of the mixed airflows enter the combustion cavity through the tray assembly 12 to continuously supply oxygen to the fuel. Another part of the mixed airflows rises to the third drainage hole 1003 and enters the space above the tray assembly 12. The part of the mixed airflows with lower temperature will sink after entering the space above the tray assembly 12, and the oxygen in the sinking airflow will perform secondary combustion on the fuel to fully burn the fuel.

[0064] The heat insulation assembly 11 includes a fourth main plate 1101 and a fourth side plate 1102. The fourth side plate 1102 is fixed to the edge side of the fourth main plate 1101 downwardly protruding and is fixed to the inner wall of the inner container shell 7 between the first drainage hole 1001 and the second drainage hole 1002 to separate the inflow cavity and the gas supply cavity. The heat insulation assembly 11 insulates the heat generated in the upper combustion cavity as much as possible to ensure the low-temperature effect of the airflows in the inflow cavity and the diffuser cavity, so that the fuel can be fully supplied with oxygen and burned.

[0065] In addition, the fuel ash leaked from the tray 12 can be carried and collected, which is beneficial to subsequent cleaning of the furnace.

[0066] Reference Figure 6 The tray assembly 12 includes a fifth main plate 1201, a plurality of reinforcing structures 1202, a fifth side plate 1203, and a plurality of flow guide holes 1204. The fifth side plate 1203 is fixed to the edge side of the fifth main plate 1201 upwardly protruding. Each group of flow guide holes 1204 is provided with a plurality of flow guide holes. The plurality of reinforcing structures 1202 and the plurality of flow guide holes 1204 are orderly arrayed on the edge side of the fifth main plate 1201 with the center of the fifth main plate 1201. The plurality of reinforcing structures 1202 and the plurality of flow guide holes 1204 are arranged alternately. The reinforcing structure 1202 is recessed on the upper surface of the fifth main plate 1201 and protrudes on the lower surface of the fifth main plate 1201. For the fifth main plate 1201 after being perforated, the strength and support stability of the plate are effectively improved.

[0067] Further, the fifth side plate 1203 bears the fuel, and the fifth side plate 1203 is arranged at the side of the fifth main plate 1201 to effectively divide the fuel placement area. In addition, when the tray assembly 12 and the burned fuel are taken out, the fuel range is limited, and the fuel is prevented from sliding out as much as possible. During the burning process, most of the fusion gas flows into the combustion chamber through the guide hole 1204, so that the oxygen can fully contact the fuel and burn to provide heat.

[0068] Embodiment 2, refer to Figure 8 、 Figure 9 On the basis of embodiment 1, a set of support plates 15 are connected below the side of the tray assembly 12, and the set of support plates 15 are inverted L-shaped to stably support the tray assembly 12.

[0069] The side edge of the support plate 15 is fixedly connected to the inner wall of the inner container shell 7 and is fixed at a position higher than the position of the second guide hole 1002, so as to avoid interfering with the flow of gas flow.

[0070] Embodiment 3, refer to Figure 7 On the basis of embodiment 2, a second handle assembly 14 is installed in the middle of the tray assembly 12, and the second handle assembly 14 includes a second locking nut 1401, a locking bolt 1402 and a second handle 1403, which assists in taking and placing the tray assembly 12.

[0071] The second handle 1403 is arranged in a ring shape, the locking bolt 1402 is fixed at the bottom center of the second handle 1403, the locking bolt 1402 penetrates the fifth main plate 1201 and is threadedly connected with the second locking nut 1401, and the second handle 1403 and the fifth main plate 1201 are tightly connected.

[0072] The combustion furnace is provided with a fire hook 13, which is used in cooperation with the tray assembly 12. When the tray assembly 12 is taken out, the second handle 1403 is hooked by the fire hook 13 to avoid contamination or scalding.

[0073] Embodiment 4, refer to Figure 3 、 Figure 8 On the basis of embodiment 3, a locking assembly 9 is arranged in the gas flow chamber, and the locking assembly 9 includes a plurality of first locking holes 901, a plurality of second locking holes 902, a plurality of third connecting plates 903 and a plurality of first locking nuts 904.

[0074] The first locking holes 901 and the second locking holes 902 are arranged in a one-to-one correspondence on the inner wall of the inner container shell 7, the first locking holes 901 are located above the third drainage hole 1003, the second locking holes 902 are located above the tray assembly 12, the third connecting plates 903 are arranged in a one-to-one correspondence with the first locking holes 901 and the second locking holes 902, one side of the third connecting plates 903 away from the inner container shell 7 is fixedly connected to the inner wall of the outer shell 1, and the other side of the third connecting plates 903 close to the inner container shell 7 is respectively locked and connected to the first locking holes 901 and the second locking holes 902 by the first locking nuts 904.

[0075] In the embodiment, in order to improve the connection stability between the inner container shell 7 and the outer shell 1, after the preliminary fastening is completed, the first locking holes 901 and the second locking holes 902 are corresponded to the third connecting plates 903 by the locking assembly 9, and the first locking nuts 904 are used for locking, so that the secondary fastening process between the inner container shell 7, the flow guide assembly 8 and the outer shell 1 is realized.

[0076] Embodiment 5, refer to Figure 8 、 Figure 10 On the basis of the embodiment 4, the following structure is additionally provided, the combustion furnace further comprises an upper ring assembly 6, the upper ring assembly 6 comprises a second main plate 601, a first side plate 602, a plurality of first connecting plates 603 and a second side plate 604, the second main plate 601 is provided as an opening on the surface above the inner container shell 7 and forms an inner side edge, the first side plate 602 and the second side plate 604 are respectively downwardly protruded and fixed to the outer side edge and the inner side edge of the second main plate 601, the top of the outer shell 1 is embedded at the connection between the second main plate 601 and the first side plate 602, the top of the inner container shell 7 is embedded at the connection between the second main plate 601 and the second side plate 604, the plurality of first connecting plates 603 are uniformly fixed to the bottom surface of the second main plate 601, and the other side surface of the second main plate 601 is threadedly fixed to the surface of the inner container shell 7; wherein the first side plate 602 and the second side plate 604 horizontally limit the positions of the side walls of the inner container shell 7 and the outer shell 1 constituting the airflow cavity, the second main plate 601 and the third main plate 801 vertically limit the top and bottom of the inner container shell 7 and the outer shell 1 constituting the airflow cavity, so as to accurately limit the installation position of the outer shell 1, in addition, the second main plate 601 shields the top of the airflow cavity, so that the above-mentioned small part of the fusion airflow can effectively enter the third drainage hole 1003 to perform the secondary combustion process.

[0077] The top of the upper ring assembly 6 is further provided with a cover plate assembly 3, the cover plate assembly 3 comprises a first main plate 301 and a first coiled layer 302.

[0078] The first coil layer 302 is fixed to the side of the first main plate 301 and is arranged on the upper surface of the second main plate 601, the lower surface of the first main plate 301 is fixed with a group of fixed sheets 303, the fixed sheet 303 is inverted L-shaped, and the side edge is located inside the second side plate 604; the arrangement of the group of fixed sheets 303 can assist the operator to accurately cover the first main plate 301 above the combustion cavity, and the edge of the first coil layer 302 is arranged, so that the cover plate assembly 3 and the upper ring assembly 6 adopt a linear contact mode with high sealing performance and small contact area, which can not only reduce the contact area between the two and reduce the material loss generated when the cover is frequently taken, and the linear contact facilitates the taking of the first cover plate 301.

[0079] The first main plate 301 is provided with a first handle assembly 4 in the middle, and the first handle assembly 4 comprises a placing bin 401, a first handle 402 and a handle plate 403.

[0080] The placing bin 401 is arranged in the middle of the first main plate 301, the handle plate 403 is fixedly arranged in the inside of the placing bin 401 and is rotationally connected with the first handle 402, and the first handle 402 can be placed in the inside of the placing bin 401.

[0081] The fire hook 13 can also assist the first handle 402 to take, and when the furnace body is used, the cover plate assembly 3 is covered on the top of the upper ring assembly 6 through the first handle assembly 4, so as to reduce the dust entering.

[0082] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0083] Finally, it should be pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A combustion furnace, characterized in that: include: An external support mechanism includes an outer shell (1) and a chassis (2). The outer shell (1) forms a hollow column, and the chassis (2) is located on the bottom side of the outer shell (1). The peripheral wall of the chassis (2) is provided with several air inlets (5). An internal support mechanism is provided, comprising an inner shell (7), a flow guiding component (8), a heat insulation component (11), and a tray component (12). The inner shell (7) is placed within the hollow cylinder enclosed by the outer shell (1), forming an airflow cavity between the inner shell (7) and the outer shell (1). The inner shell (7) is arranged around its central axis. The flow guiding component (8), the heat insulation component (11), and the tray component (12) are arranged in an orderly manner from bottom to top along the central axis of the inner shell (7), and the heat insulation component (11) and the tray component (12) are installed inside the inner shell (7). The flow guiding component (8) overlaps between the outer shell (1) and the chassis (2), forming an inlet cavity between the flow guiding component (8) and the chassis (2). A flow-expanding cavity is formed between the flow-guiding component (8) and the heat insulation component (11), and an air supply cavity is formed between the heat insulation component (11) and the tray component (12). A combustion cavity is formed in the space above the tray component (12). The flow-guiding component (8) includes a third main plate (801), a plurality of annular slots (803), and cooling holes (806). The central axis of the inner shell (7) overlaps with the central axis of the outer shell (1), and the outer diameter of the inner shell (7) is smaller than the inner diameter of the outer shell (1). The plurality of annular slots (803) are arrayed around the center of the third main plate (801) on the surface of the third main plate (801), so that the airflow cavity communicates with the inlet cavity. The cooling holes (806) are located in the middle of the third main plate (801). A flow-through assembly (10) includes a plurality of first flow-through holes (1001), a plurality of second flow-through holes (1002), and a plurality of third flow-through holes (1003) opened on the shell of the inner shell (7). The plurality of first flow-through holes (1001), the plurality of second flow-through holes (1002), and the plurality of third flow-through holes (1003) are arranged in order from bottom to top along the central axis of the inner shell (7). The heat insulation assembly (11) is abutted between the plurality of first flow-through holes (1001) and the plurality of second flow-through holes (1002). The first flow-through holes (1001) are connected to the expansion chamber and the airflow chamber. The second flow-through holes (1002) are connected to the air supply chamber and the airflow chamber. The third flow-through holes (1003) are located at the upper part of the combustion chamber and are connected to the airflow chamber.

2. The combustion furnace according to claim 1, characterized in that: The flow guiding assembly (8) also includes a third side plate (802), a plurality of second connecting plates (804) and a plurality of connecting holes (805); The third side plate (802) protrudes upward and is fixed to the side of the third main plate (801), and is embedded in the lower inner wall of the outer shell (1). The plurality of connecting holes (805) are staggered between each adjacent annular slot (803). The plurality of second connecting plates (804) are fixedly connected to the bottom of the inner shell (7) and are threadedly connected to the connecting holes (805) located below it.

3. A combustion furnace according to claim 2, characterized in that: The heat insulation component (11) includes a fourth main plate (1101) and a fourth side plate (1102). The fourth side plate (1102) protrudes downward and is fixed to the side of the fourth main plate (1101), and is fixed to the inner wall of the inner shell (7) between the first drainage hole (1001) and the second drainage hole (1002) to separate the inlet cavity and the air supply cavity; A filter screen (16) is fixedly connected to the outside of the plurality of second drainage holes (1002).

4. A combustion furnace according to claim 3, characterized in that: The tray assembly (12) includes a fifth main board (1201), multiple sets of reinforcing structures (1202), a fifth side plate (1203), and multiple sets of flow guide holes (1204). The fifth side plate (1203) protrudes upward and is fixed to the side of the fifth main board (1201). Each set of the flow guide holes (1204) is provided with a plurality of them. The multiple sets of reinforcing structures (1202) and the multiple sets of flow guide holes (1204) are arranged in an orderly array uniformly toward the side of the fifth main board (1201) with respect to the center of the fifth main board (1201). The multiple sets of reinforcing structures (1202) and the multiple sets of flow guide holes (1204) are staggered. The reinforcing structure (1202) is recessed on the upper surface of the fifth main board (1201) and protrudes on the lower surface of the fifth main board (1201).

5. A combustion furnace according to claim 4, characterized in that: A set of support plates (15) are connected to the lower side of the tray assembly (12). The set of support plates (15) is in the shape of an inverted L. The side of the support plate (15) is fixedly connected to the inner wall of the inner shell (7) and the fixed position is higher than the second drainage hole (1002).

6. A combustion furnace according to claim 5, characterized in that: The pallet assembly (12) is provided with a second handle assembly (14) in the middle. The second handle assembly (14) includes a second locking nut (1401), a locking bolt (1402), and a second handle (1403). The second handle (1403) is arranged in a ring shape, and the locking bolt (1402) is fixed at the center of the bottom of the second handle (1403). The locking bolt (1402) passes through the fifth main board (1201) and is threadedly connected to the second locking nut (1401).

7. A combustion furnace according to claim 6, characterized in that: The airflow cavity is provided with a locking assembly (9), which includes a plurality of first locking holes (901), a plurality of second locking holes (902), a plurality of third connecting plates (903) and a plurality of first locking nuts (904). The plurality of first locking holes (901) and the plurality of second locking holes (902) are all opened on the inner wall of the inner shell (7) and are arranged in a vertically corresponding manner. The first locking hole (901) is located above the third drainage hole (1003), and the second locking hole (902) is located above the tray assembly (12). The third connecting plate (903) is arranged one-to-one with the first locking hole (901) and the second locking hole (902). The side of the third connecting plate (903) away from the inner shell (7) is fixedly connected to the inner wall of the outer shell (1). The side of the third connecting plate (903) close to the inner shell (7) is respectively locked with the first locking nut (904) to the first locking hole (901) and the second locking hole (902).

8. A combustion furnace according to claim 1 or 7, characterized in that: It also includes an upper ring assembly (6), which includes a second main board (601), a first side plate (602), a plurality of first connecting plates (603) and a second side plate (604). The second main board (601) has an opening on the surface above the inner shell (7). The first side plate (602) and the second side plate (604) protrude downwards and are fixed to the outer and inner sides of the second main board (601), respectively. The top of the outer shell (1) is embedded in the connection between the second main board (601) and the first side plate (602). The top of the inner shell (7) is embedded in the connection between the second main board (601) and the second side plate (604). The plurality of first connecting plates (603) are evenly fixed to the bottom surface of the second main board (601). The other side of the second main board (601) is threaded to the surface of the inner shell (7).

9. A combustion furnace according to claim 8, characterized in that: The top of the upper ring assembly (6) is also provided with a cover plate assembly (3), the cover plate assembly (3) including a first main board (301) and a first roll layer (302). The first roll layer (302) is fixed to the side of the first motherboard (301) and mounted on the upper surface of the second motherboard (601). A set of fixing pieces (303) is fixed on the lower surface of the first motherboard (301). The fixing pieces (303) are in the shape of an inverted L and their sides are located inside the second side plate (604).

10. A combustion furnace according to claim 9, characterized in that: The first motherboard (301) is equipped with a first handle assembly (4) in the middle. The first handle assembly (4) includes a storage compartment (401), a first handle (402) and a handle plate (403). The placement compartment (401) is located in the middle of the first main board (301). The handle plate (403) is fixedly disposed inside the placement compartment (401) and rotatably connected to the first handle (402). The first handle (402) can be placed inside the placement compartment (401).

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