Barbecue oven

Abstract

The invention relates to the technical field of barbecue ovens, solves the problems of insufficient air supply and easy dust raising during barbecue in the prior art, and discloses a barbecue oven which comprises a bottom plate, a plurality of supporting pieces and a barbecue grill, and the plurality of supporting pieces are enclosed on the upper surface of the bottom plate to form a fuel groove; the barbecue grill covers the fuel tank; the bottom plate is supported off the ground through a bracket; an air duct penetrates through the bottom plate in the length direction; the barbecue oven further comprises a combustion-supporting machine and a smoke exhaust pipe. One end of the bottom plate is connected with the combustion-supporting machine; the combustion-supporting machine supplies air to the air duct; a plurality of dust falling grooves are formed in the upper wall of the bottom plate at intervals in the length direction; the other end of the dust falling groove is communicated with the air duct; an acute angle is formed between the dust falling groove and the air flowing direction in the air channel. Air can be supplied to the air duct through the combustion-supporting machine, and the fuel combustion effect is enhanced. Dust is taken away along with air flow, and food pollution is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of barbecue ovens, and in particular to a barbecue oven. Background Art

[0002] A barbecue grill is an auxiliary frame used to heat food from below, mainly made of metal materials such as stainless steel, iron, etc. It is usually used in outdoor barbecue activities to generate heat by burning fuels such as charcoal and coal to cook food.

[0003] The structure of the existing barbecue grill mainly includes the following parts: Grill support: The grill support is the main structure of the barbecue grill, usually made of metal material, used to support the grill and fuel. The shape and size of the support vary, some are simple tripods or quadrupeds, and some are designed as more complex structures, such as brackets with adjustable height or foldable brackets. Grill: The grill is the part of the barbecue grill used to place food, usually made of metal wire or metal plate. The shape and size of the grill depends on the design of the barbecue grill. Some are flat grills, while others are mesh grills to increase the contact area between food and heat. The material of the grill is usually stainless steel or iron to ensure that it is resistant to high temperatures and not easy to deform. Fuel clip or fuel tray: The fuel clip or fuel tray is used to place fuel such as charcoal and coal to ensure that the fuel can burn stably and generate enough heat. The fuel clip is usually designed to be adjustable in height so that the distance between the fuel and the grill can be adjusted according to the barbecue needs. Other accessories: Some barbecue grills are also equipped with other accessories, such as grill forks, grill spatulas, grill clips, etc., so that food can be easily turned and moved during the barbecue process. In addition, some high-end barbecue grills may also be equipped with temperature controllers, lighting equipment, etc. to improve the convenience and safety of barbecue.

[0004] Regarding the above-mentioned related technologies, during the fuel combustion process, internal oxygen consumption will lead to insufficient flame combustion, making it difficult to control the temperature of the food. Moreover, if the fuel is charcoal or other materials that easily produce ash, the ash dust will affect the food quality. Summary of the invention

[0005] In order to improve the defects of insufficient air supply and easy dust generation during barbecue in the prior art, the present application provides a barbecue grill.

[0006] The following technical solutions are adopted: A barbecue grill comprises a base plate, a plurality of support plates and a barbecue grid, wherein the plurality of support plates are enclosed on the upper surface of the base plate to form a fuel tank; the barbecue grid covers the top of the fuel tank; the base plate is supported from the ground by a bracket; an air duct is provided through the base plate along the length direction; the barbecue grill also comprises a combustion-supporting engine and a smoke exhaust pipe; one end of the base plate is connected to the combustion-supporting engine, and the other end is connected to the smoke exhaust pipe; the combustion-supporting engine supplies air to the air duct; a plurality of dust collecting grooves are provided on the upper wall of the base plate at intervals along the length direction; one end of the dust collecting groove is connected to the fuel tank, and the other end is connected to the air duct; the dust collecting groove is arranged at an acute angle to the air flow direction in the air duct.

[0007] By adopting the above technical solution, air is supplied to the air duct through the combustion aid to enhance the fuel combustion effect. The dust removal trough is set so that the dust and impurities generated by fuel combustion can fall into the air duct and be taken away with the air flow, reducing the pollution of the barbecued food. The combustion efficiency of the barbecue oven is improved, the accumulation of smoke and impurities is reduced, and the barbecue process is cleaner and healthier.

[0008] Optionally, the bottom plate array is provided with a plurality of air holes, the plurality of air holes are divided into a plurality of rows, and each row of the air holes is arranged between adjacent dust collecting grooves.

[0009] By adopting the above technical solution, the arrangement of the air holes further increases the contact area between air and fuel, thereby improving the combustion efficiency.

[0010] Optionally, the combustion-supporting engine comprises a shell, a wind wheel and a rotating driving member, the wind wheel is rotatably connected to the shell, and the rotating driving member drives the wind wheel to rotate.

[0011] By adopting the above technical solution, the rotating driving member drives the wind wheel to rotate, generating wind force to send air into the air duct, thereby providing stable wind force support for the barbecue grill, making the combustion process more stable and controllable.

[0012] Optionally, the shell includes an air compression chamber and an air supply chamber; the air compression chamber is a cylindrical structure, and the air supply chamber extends along the tangential direction of the air compression chamber; the wind wheel is rotatably connected to the air compression chamber; and the end of the air supply chamber is connected to the base plate.

[0013] By adopting the above technical solution, the air compression chamber generates compressed air through the wind wheel, and the air supply chamber delivers the compressed air into the air duct of the bottom plate, thereby increasing the air pressure and flow rate, and further enhancing the combustion effect.

[0014] Optionally, a plurality of adjustment blades are provided in the air compression chamber; a plurality of the adjustment blades are arranged on the outer peripheral side of the wind wheel; one end of the adjustment blade is rotatably connected to the inside of the air compression chamber, and the other end can be rotated to abut against the adjacent adjustment blade; when a plurality of the adjustment blades abut against each other, the air compression chamber is divided into an inner cavity and an outer cavity; a partition is provided in the middle of the air supply chamber, and the internal space of the air supply chamber is divided into an upper air duct and a lower air duct with the partition as the boundary; the lower air duct is connected to the inner cavity; an adjustment component for driving a plurality of the adjustment blades to rotate is provided outside the shell.

[0015] By adopting the above technical solution, the regulating blade can be rotated through the regulating assembly, thereby changing the air flow state in the air compression chamber, achieving precise control of the combustion process, and adjusting the combustion intensity and wind speed as needed.

[0016] Optionally, a slide groove is provided at the connection between the bottom of the air supply chamber and the air compression chamber, and the slide groove is parallel to the partition; a docking plate is slidably connected in the slide groove, and the docking plate can slide to abut the adjusting blade; a spring is provided in the slide groove to ensure that the docking plate always has a tendency to extend outward.

[0017] Optionally, the adjustment assembly includes a driving ring, an adjusting driving member and a plurality of driven gears; the plurality of adjusting blades are connected to the shell through a blade shaft, one end of the blade shaft passes through the outer wall of the shell and is connected to the driven gear; the driving ring is rotatably connected to the shell, and the plurality of driven gears are meshed with the inner side of the driving ring; the adjusting driving member is connected to the shell, and a driving gear is provided at the output end of the adjusting driving member; the driving gear meshes with the outer side of the driving ring.

[0018] By adopting the above technical solution, the adjusting driving member drives the driving ring to rotate through the driving gear, thereby driving the driven gear and the adjusting blade to rotate.

[0019] Optionally, the smoke exhaust pipe is arranged perpendicular to the length direction of the base plate; a branch pipe is arranged in the middle of the smoke exhaust pipe, and the branch pipe is connected to the air duct; a condensation curved pipe is arranged inside the upper end of the smoke exhaust pipe, and the condensation curved pipe is connected to a condensation component, and a fluid medium flows in the condensation curved pipe; a steam pipe is arranged at the lower end of the smoke exhaust pipe, and the steam pipe is connected to a steam generating component that supplies steam internally.

[0020] Optionally, the condensation assembly includes a condensation tank, a first pumping drive, a water outlet pipe, a return pipe, a pumping pipe and a second pumping drive; the condensation tank includes two separated first and second chambers; one end of the water outlet pipe is connected to the first chamber, and the other end is connected to the condensation curved pipe; the first pumping drive is arranged on the water outlet pipe; the other end of the condensation curved pipe is connected to the return pipe, and the return pipe is connected to the second chamber; the pumping pipe is connected to the first chamber, and the second pumping drive is connected to the pumping pipe.

[0021] By adopting the above technical solution, after the fluid medium flows in the condensing curved pipe and absorbs heat, it enters the first chamber of the condensing box through the water outlet pipe for cooling. The cooled fluid medium returns to the condensing curved pipe through the return pipe to continue circulating. The condensation treatment of harmful substances in the smoke improves the energy utilization efficiency and environmental protection performance of the barbecue grill.

[0022] Optionally, the steam generating assembly includes a water tank, a resistance heat pipe and a power supply; one end of the steam pipe is connected to the upper part of the water tank, and the other end is vertically connected to the smoke exhaust pipe; the resistance heat pipe is arranged at the bottom of the water tank; the power supply provides electrical energy to the resistance heat pipe; the second chamber is connected to a water supply pipe, a solenoid valve is arranged on the water supply pipe, and the water supply pipe is connected to the top of the water tank.

[0023] By adopting the above technical solution, the resistance heat pipe heats the water in the water tank under the action of the power supply to generate steam. The steam enters the exhaust pipe through the steam pipe and is discharged after mixing with the smoke. The addition of steam can further purify the smoke and reduce the emission of harmful substances. At the same time, the humidification effect of steam can also improve the comfort of the barbecue environment.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. By optimizing the combustion structure, adding combustion-supporting engines and exhaust pipes, etc., precise control of the combustion process and effective purification of flue gas are achieved, reducing the emission of smoke and harmful substances.

[0025] 2. By adjusting the settings of structures such as blades, docking plates and springs, as well as the flexible application of condensing components and steam generating components, it can be adjusted and optimized according to different barbecue needs, thereby improving the applicability of the barbecue oven.

[0026] 3. Through the condensation component to recycle the heat in the flue gas and the humidification effect of steam, full utilization of energy and improvement of the barbecue environment are achieved, which improves the overall performance of the barbecue grill and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2is a schematic diagram of a side cross-sectional structure of this embodiment; Figure 3 It is a partial top view of the structure of this embodiment; Figure 4 It is a schematic diagram of the enlarged structure at A; Figure 5 It is a schematic diagram of the combustion engine structure; Figure 6 yes Figure 5 Schematic diagram of the cutaway structure; Figure 7 It is a schematic diagram of the structure of the regulating component.

[0028] Description of reference numerals: 1, bottom plate; 11, bracket; 12, air duct; 13, dust collecting groove; 14, air hole; 2, support plate; 21, barbecue grid; 22, fuel tank; 3, combustion engine; 4, shell; 41, air compression chamber; 411, inner cavity; 412, outer cavity; 42, air supply chamber; 421, upper air duct; 422, lower air duct; 43, partition; 44, air inlet groove; 45, slide groove; 451, docking plate; 452, spring; 46, air filter; 47, annular tube; 5, wind wheel; 51, connecting plate; 52, connecting ring; 53, fan blade; 54, rotating drive member; 61, adjusting blade; 611, blade shaft; 62. Adjustment assembly; 621. Drive ring; 6211. Internal teeth; 6212. External teeth; 622. Adjustment drive; 623. Active gear; 624. Driven gear; 71. Exhaust pipe; 711. Branch pipe; 72. Condenser curved pipe; 73. Steam pipe; 74. Sewage collecting tank; 8. Condensation assembly; 81. Condensation tank; 811. First chamber; 812. Second chamber; 82. Water outlet pipe; 821. First pumping drive; 83. Reflux pipe; 84. Pumping pipe; 841. Second pumping drive; 9. Steam generating assembly; 91. Water heating tank; 92. Resistance heat pipe; 94. Water supply pipe; 941. Solenoid valve. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 To Attachment Figure 7 This application is described in further detail.

[0030] In the prior art, during the grilling process, there is a defect that the internal oxygen is consumed as the fuel burns, the oxygen cannot be replenished in time, and the flame burning degree is unstable. This defect makes it difficult for the chef to control the heat of the food. Furthermore, if the fuel is a material that is easy to produce ash, such as charcoal, the ash dust will affect the quality of the food.

[0031] Therefore, in order to stabilize the oxygen supply of the fuel and reduce dust. The embodiment of the present application discloses a barbecue grill, which includes a base plate 1, a plurality of support plates 2 and a barbecue grid 21. The base plate 1 is a thick and long rectangular plate structure made of metal. The plurality of support plates 2 are generally four metal rectangular plates with two long and two short. The support plates 2 are all arranged vertically on the upper surface of the base plate 1, and the support plates 2 are all connected to the edge of the base plate 1, and can be connected by welding, screw connection, etc., without specific limitation. The length of the long support plate 2 corresponds to the length of the base plate 1, and the length of the short support plate corresponds to the width of the base plate 1. The plurality of support plates 2 are connected end to end in sequence to form a rectangular frame structure. The support plates 2 start from the base plate 1 and extend upward. The plurality of support plates 2 cooperate with the upper surface of the base plate 1 to enclose a fuel tank 22 for placing fuel. The grilling grid 21 is formed of a staggered structure of a plurality of long rods and a plurality of short rods arranged perpendicular to the long rods. The grilling grid 21 covers the fuel tank 22, and the four edges of the grilling grid 21 are connected to the corresponding support sheet 2, and the connection method can be selected by welding. The grilling grid 21 is used to place food. The bottom plate 1 is supported from the ground by the bracket 11. The bottom plate 1 is penetrated at both ends along the length direction to form an air duct 12. The barbecue grill also includes a combustion-supporting engine 3 and a smoke exhaust pipe 71. One end of the bottom plate 1 is connected to the combustion-supporting engine 3, and the other end is connected to the smoke exhaust pipe 71. The combustion-supporting engine 3 and the smoke exhaust pipe 71 are both connected to the air duct 12. The combustion-supporting engine 3 supplies air to the air duct 12. A plurality of dust-collecting grooves 13 are spaced apart on the upper wall of the bottom plate 1 along the length direction. One end of the dust-collecting groove 13 is connected to the fuel tank 22, and the other end is connected to the air duct 12. The dust-collecting groove 13 is arranged obliquely, and the inclination angle is an acute angle with the air flow direction in the air duct 12.

[0032] The combustion engine 3 supplies flowing air to the air duct 12, so that the air pressure in the air duct 12 is lower than the air pressure in the fuel tank 22. Due to the pressure difference, the outside air is attracted from the fuel tank 22 into the air duct 12, and the air is brought in when passing through the fuel tank 22, so as to supply fresh air to the fuel. At the same time, due to the negative pressure, the ash produced by the fuel is driven through the dust removal groove 13 into the air duct 12 during the air flow, and enters the smoke exhaust pipe 71 for centralized treatment, thereby reducing the dust.

[0033] Furthermore, the bottom plate 1 is provided with a plurality of air holes 14 in an array, the plurality of air holes 14 are divided into a plurality of rows, and each air hole 14 is arranged between adjacent dust collecting grooves 13. The arrangement of the air holes 14 makes the air exchange between the fuel groove 22 and the air duct 12 smoother.

[0034] Specifically, the shell 4 is a hollow metal structure with a b-shaped cross-sectional structure. The shell 4 includes an air compression chamber 41 and an air supply chamber 42. The air compression chamber 41 is a cylindrical structure, and the air supply chamber 42 is a rectangular pipe structure with the same width as the air compression chamber 41. The air supply chamber 42 extends along the tangent direction of the air compression chamber 41. The end flange of the air supply chamber 42 is connected to the bottom plate 1. The combustion-supporting engine 3 includes a wind wheel 5 and a rotating driving member 54, the wind wheel 5 is rotatably connected to the air compression chamber 41, the rotating driving member 54 is a motor, the outer shell of the rotating driving member 54 is connected to the outside of the shell 4, and the output shaft of the rotating driving member 54 passes through the outer wall of the shell 4 to the air compression chamber 41 and is coaxially connected to the wind wheel 5. The wind wheel 5 includes a connecting disk 51, a connecting ring 52 and a plurality of blades 53, the connecting disk 51 and the connecting ring 52 are coaxially arranged, and the two ends of the blades 53 are respectively connected to the connecting disk 51 and the connecting ring 52, and the blades 53 are arranged circumferentially along the axis of the connecting disk 51, and the blades 53 are inclined. The rotating driving member 54 is connected to the center of the connecting plate 51. The housing 4 is provided with an air inlet groove 44 on the other side where the rotating driving member 54 is provided. The connecting ring 52 is located at a position corresponding to the air inlet groove 44, and the air inlet groove 44 is concentric with the connecting ring 52. The air inlet groove 44 is covered with an air filter 46.

[0035] Furthermore, a plurality of adjusting blades 61 are arranged in the air compression chamber 41. The plurality of adjusting blades 61 are arranged on the outer peripheral side of the wind wheel 5 with the rotating shaft of the wind wheel 5 as the axis, forming a structure similar to a circular array. The length of the adjusting blade 61 is the same as that of the wind wheel 5. One end of the adjusting blade 61 is rotatably connected to the inside of the air compression chamber 41, and the other end can be rotated to abut against the adjacent adjusting blade 61. When the plurality of adjusting blades 61 abut against each other, the air compression chamber 41 is divided into an inner cavity 411 and an outer cavity 412. A partition 43 is provided in the middle of the air supply chamber 42, and the internal space of the air supply chamber 42 is divided into an upper air duct 421 and a lower air duct 422 by the partition 43. The upper air duct 421 is always connected to the outer cavity 412. At the connection portion between the lower air duct 422 and the inner cavity 411, no adjusting blade 61 is provided, so that the lower air duct 422 is always connected to the inner cavity 411. That is, when the adjusting blades 61 rotate to abut against each other, the inner cavity 411 and the outer cavity 412 are separated, and after the wind wheel 5 rotates, the pressurized air only flows from the inner cavity 411 to the lower air duct 422, and is sent to the air duct 12 by the lower air duct 422. On the contrary, when the adjusting blades 61 rotate to separate from each other, the gas in the inner cavity 411 and the outer cavity 412 flows freely and enters the air duct 12 from the upper air duct 421 and the lower air duct 422 at the same time. An adjusting component 62 for driving a plurality of adjusting blades 61 to rotate is arranged outside the housing 4. The wind pressure can be controlled by setting the adjusting blades 61, and the air flow posture can be controlled by the partition 43. In the stage when the fuel is just ignited (at this time, the amount of ash is low), the regulating blades 61 are away from each other, and the inner cavity 411 and the outer cavity 412 are connected. At this time, the air duct 12 is completely filled with air, and the wind speed is at a low state. While generating negative pressure, part of the air leaks from the air duct 12 through the air hole 14 to the fuel tank 22 for flame retardancy. At this time, the amount of ash stirred up is small and is at an acceptable stage. When the fuel is completely burned, a large amount of ash accumulates at the bottom of the fuel tank 22. At this time, it is necessary to make several regulating blades 61 abut against each other, thereby closing the inner cavity 411, so that the air generated by the wind wheel 5 is pressurized and flows along the lower air duct 422. At this time, the air flows along the bottom of the air duct 12, and the pressure is relatively high. While generating a strong negative pressure to allow external air to enter the air duct 12 from the fuel tank 22, the ash is sucked into the air duct 12 and moved. Compared with the adjustment method of controlling the air volume by only controlling the rotation speed of the wind wheel 5, the collection and treatment of ash is more efficient.

[0036] Furthermore, since the air still needs to pass through the outer cavity 412 when flowing between the inner cavity 411 and the lower air duct 422, this will cause the loss of some air. Therefore, in order to optimize the air flow state. A slide groove 45 is provided at the connection between the bottom of the air supply chamber 42 and the air compression chamber 41, and the slide groove 45 is parallel to the partition 43. A docking plate 451 is slidably connected in the slide groove 45, and the docking plate 451 can slide to abut against the adjusting blade 61. A spring 452 is provided in the slide groove 45 so that the docking plate 451 always has a tendency to extend outward. When the adjusting blade 61 separates the inner cavity 411 and the outer cavity 412, the docking plate 451 closes the gap between the inner cavity 411 and the lower air duct 422 flowing to the outer cavity 412, thereby optimizing the air flow.

[0037] Furthermore, the adjustment assembly 62 includes a drive ring 621, an adjustment drive member 622 and a plurality of driven gears 624. An annular tube 47 is provided outside the housing 4 to support the drive ring 621 and protect the adjustment assembly 62. The annular tube 47 is provided on the same side of the rotating drive member 54, and the two are concentric. A plurality of adjustment blades 61 are connected to the housing 4 through a blade shaft 611, and one end of the blade shaft 611 passes through the outer wall of the housing 4 and is connected to the driven gear 624. The drive ring 621 is rotatably connected to the housing 4 through the annular tube 47, and the inner wall of the drive ring 621 is provided with internal teeth 6211, and a plurality of driven gears 624 are all meshed with the internal teeth 6211. The adjustment drive member 622 is a motor, and the adjustment drive member 622 is connected to the housing 4 and drives the drive ring 621 to rotate. A driving gear 623 is disposed at the output end of the adjusting driving member 622 ; an outer wall of the driving ring 621 is provided with external teeth 6212 ; and the driving gear 623 meshes with the external teeth 6212 .

[0038] Furthermore, the smoke exhaust pipe 71 is arranged perpendicular to the length direction of the bottom plate 1. A branch pipe 711 is arranged in the middle of the smoke exhaust pipe 71, and the connection between the branch pipe 711 and the smoke exhaust pipe 71 is chamfered to make the air flow smoother and avoid turbulence. The other end of the branch pipe 711 is connected to the air duct 12, and the branch pipe 711 is connected to the outer wall of the bottom plate 1 through a flange. A condensation curved pipe 72 is arranged inside the upper end of the smoke exhaust pipe 71, and the condensation curved pipe 72 is connected to the condensation component 8, and a fluid medium flows in the condensation curved pipe 72, and the fluid medium is water. A steam pipe 73 is arranged at the lower end of the smoke exhaust pipe 71, and the steam pipe 73 is connected to the steam generating component 9 for supplying steam internally.

[0039] Further, the condensation assembly 8 includes a condensation tank 81, a first pumping drive 821, a water outlet pipe 82, a return pipe 83, a pumping pipe 84 and a second pumping drive 841. The condensation tank 81 includes two separated first chambers 811 and second chambers 812. One end of the water outlet pipe 82 is connected to the first chamber 811, and the other end is connected to the condensation curved pipe 72. The first pumping drive 821 is arranged on the water outlet pipe 82. The other end of the condensation curved pipe 72 is connected to the return pipe 83, and the return pipe 83 is connected to the second chamber 812. The pumping pipe 84 is connected to the first chamber 811, and the second pumping drive 841 is connected to the pumping pipe 84. By placing the water pumping pipe 84 in the water source, the water is pumped to the first strength through the second water pumping drive 841, and the first water pumping drive 821 sends the water to the condensation curved pipe 72 through the water outlet pipe 82. The water in the condensation curved pipe 72 enters the second chamber 812 through the reflux pipe 83, so that the condensation curved pipe 72 has a heat exchange function, which can condense and gather the high-temperature steam with ash in the smoke exhaust pipe 71, and the mixed gas falls after condensation.

[0040] Furthermore, the steam generating assembly 9 includes a water tank 91, a resistance heat pipe 92 and a power supply. One end of the steam pipe 73 is connected to the upper part of the water tank 91, and the other end is vertically connected to the exhaust pipe 71. The resistance heat pipe 92 is arranged at the bottom of the water tank 91. The power supply provides electric energy to the resistance heat pipe 92. The water tank 91 is located below the condensation tank 81. The second chamber 812 is connected to a water supply pipe 94, on which a solenoid valve 941 is arranged, and the water supply pipe 94 is connected to the top of the water tank 91. The water is heat exchanged through the condensing curved tube 72, and is preheated and enters the second chamber 812. The electromagnetic valve 941 controls the water to fall into the water tank 91. The resistance heat pipe 92 heats the water until it boils. The boiled water vapor is discharged into the smoke exhaust pipe 71 through the steam pipe 73, and merges with the air mixed with ash, thereby absorbing the ash. When the ash mixed with water vapor contacts the condensing curved tube 72, it condenses into water droplets and falls, thereby reducing the emission of ash in the air.

[0041] Furthermore, a sewage collection box 74 may be provided at the bottom of the smoke exhaust pipe 71 .

[0042] The implementation principle of a barbecue oven in the embodiment of the present application is: The flow air is supplied to the air duct 12 through the combustion-supporting engine 3, so that the air pressure in the air duct 12 is lower than the air pressure in the fuel tank 22, and the outside air is attracted to enter the air duct 12 from the fuel tank 22 through the dust collecting tank 13. While supplying fresh air to the fuel, it drives the fuel to enter the air duct 12 through the dust collecting tank 13 and enter the smoke exhaust pipe 71 for centralized treatment.

[0043] During the ignition stage, the blades 61 are adjusted to move away from each other, the inner cavity 411 and the outer cavity 412 are connected, and part of the air leaks from the air duct 12 through the air holes 14 into the fuel tank 22 for flame retardancy.

[0044] During the complete combustion stage, a plurality of adjusting blades 61 are adjusted to abut against each other, closing the inner cavity 411 , pressurizing the air and flowing along the lower air duct 422 . At this time, the air flows along the bottom of the air duct 12 , and the strong negative pressure accelerates the external air to enter the air duct 12 from the fuel tank 22 , and sucks the ashes into the air duct 12 .

[0045] The water in the water tank 91 is heated until it boils, and the water vapor is discharged into the smoke exhaust pipe 71 through the steam pipe 73 and merges with the air mixed with ash. When the ash mixed with water vapor contacts the condensation curved pipe 72, it condenses into water droplets and falls, thereby reducing the emission of ash in the air.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A barbecue grill, comprising a bottom plate (1), a plurality of support plates (2) and a barbecue grid (21), wherein the plurality of support plates (2) are arranged on the upper surface of the bottom plate (1) to enclose a fuel groove (22); the barbecue grid (21) covers the fuel groove (22); the bottom plate (1) is supported from the ground by a bracket (11); and characterized in that: The bottom plate (1) is provided with an air duct (12) running through it along the length direction; the barbecue grill further comprises a combustion aid (3) and a smoke exhaust pipe (71); one end of the bottom plate (1) is connected to the combustion aid (3), and the other end is connected to the smoke exhaust pipe (71); the combustion aid (3) supplies air to the air duct (12); a plurality of dust collecting grooves (13) are provided on the upper wall of the bottom plate (1) at intervals along the length direction; one end of the dust collecting groove (13) is connected to the fuel groove (22), and the other end is connected to the air duct (12); the dust collecting groove (13) is arranged at an acute angle to the air flow direction in the air duct (12).

2. A barbecue oven according to claim 1, characterized in that: The bottom plate (1) is provided with a plurality of air holes (14) in an array, the plurality of air holes (14) are divided into a plurality of rows, and each row of the air holes (14) is arranged between adjacent dust collection grooves (13).

3. A barbecue oven according to claim 2, characterized in that: The combustion-supporting engine (3) comprises a housing (4), a wind wheel (5) and a rotation driving member (54); the wind wheel (5) is rotationally connected to the housing (4), and the rotation driving member (54) drives the wind wheel (5) to rotate.

4. A barbecue oven according to claim 3, characterized in that: The housing (4) comprises an air compression chamber (41) and an air supply chamber (42); the air compression chamber (41) is a cylindrical structure, and the air supply chamber (42) extends along a tangent direction of the air compression chamber (41); the wind wheel (5) is rotatably connected to the air compression chamber (41); and the end of the air supply chamber (42) is connected to the bottom plate (1).

5. A barbecue oven according to claim 4, characterized in that: A plurality of adjusting blades (61) are arranged in the air compression chamber (41); the plurality of adjusting blades (61) are arranged on the outer peripheral side of the wind wheel (5); one end of the adjusting blade (61) is rotatably connected to the inside of the air compression chamber (41), and the other end can be rotatably abutted against an adjacent adjusting blade (61); when the plurality of adjusting blades (61) abut against each other, the air compression chamber (41) is divided into an inner cavity (411) and an outer cavity (412); a partition plate (43) is arranged in the middle of the air supply chamber (42), and the internal space of the air supply chamber (42) is divided into an upper air duct (421) and a lower air duct (422) by the partition plate (43); the lower air duct (422) is connected to the inner cavity (411); an adjusting component (62) for driving the plurality of adjusting blades (61) to rotate is arranged outside the shell (4).

6. A barbecue oven according to claim 5, characterized in that: A slide groove (45) is provided at the connection between the bottom of the air supply chamber (42) and the air compression chamber (41), and the slide groove (45) is parallel to the partition plate (43); a docking plate (451) is slidably connected in the slide groove (45), and the docking plate (451) can slide to abut against the regulating blade (61); a spring (452) is provided in the slide groove (45) so that the docking plate (451) always has a tendency to extend outward.

7. A barbecue oven according to claim 5, characterized in that: The adjustment assembly (62) comprises a drive ring (621), an adjustment drive member (622) and a plurality of driven gears (624); the plurality of adjustment blades (61) are connected to the housing (4) via a blade shaft (611); one end of the blade shaft (611) passes through the outer wall of the housing (4) and is connected to the driven gear (624); the drive ring (621) is rotatably connected to the housing (4); the plurality of driven gears (624) are all meshed with the inner side of the drive ring (621); the adjustment drive member (622) is connected to the housing (4); a driving gear (623) is provided at the output end of the adjustment drive member (622); the driving gear (623) meshes with the outer side of the drive ring (621).

8. The barbecue oven according to claim 1, characterized in that: The smoke exhaust pipe (71) is arranged perpendicular to the length direction of the bottom plate (1); a branch pipe (711) is arranged in the middle of the smoke exhaust pipe (71), and the branch pipe (711) is connected to the air duct (12); a condensation curved pipe (72) is arranged inside the upper end of the smoke exhaust pipe (71), and the condensation curved pipe (72) is connected to a condensation component (8), and a fluid medium flows in the condensation curved pipe (72); a steam pipe (73) is arranged at the lower end of the smoke exhaust pipe (71), and the steam pipe (73) is connected to a steam generating component (9) for supplying steam internally.

9. A barbecue oven according to claim 8, characterized in that: The condensation assembly (8) comprises a condensation tank (81), a first pumping drive member (821), a water outlet pipe (82), a return pipe (83), a pumping pipe (84) and a second pumping drive member (841); the condensation tank (81) comprises two separated first chambers (811) and second chambers (812); one end of the water outlet pipe (82) is connected to the first chamber (811), and the other end is connected to the condensation curved pipe (72); the first pumping drive member (821) is arranged on the water outlet pipe (82); the other end of the condensation curved pipe (72) is connected to the return pipe (83), and the return pipe (83) is connected to the second chamber (812); the pumping pipe (84) is connected to the first chamber (811), and the second pumping drive member (841) is connected to the pumping pipe (84).

10. A barbecue oven according to claim 9, characterized in that: The steam generating assembly (9) comprises a water tank (91), a resistance heat pipe (92) and a power source; one end of the steam pipe (73) is connected to the upper part of the water tank (91), and the other end is vertically connected to the smoke exhaust pipe (71); the resistance heat pipe (92) is arranged at the bottom of the water tank (91); the power source provides electric energy to the resistance heat pipe (92); the second chamber (812) is connected to a water supply pipe (94), a solenoid valve (941) is arranged on the water supply pipe (94), and the water supply pipe (94) is connected to the top of the water tank (91).

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