A burner with secondary air combustion that can be raised and lowered

Abstract

The present invention relates to the technical field of gas stoves, and specifically to a liftable secondary air combustion burner, which comprises: a burner and a stove top, wherein the burner is embedded in the stove top, a control unit is provided on one side of the upper end of the stove top, a cleaning plate, a gas cylinder, an air cylinder, a heat recovery pipe, an air pipe, a gas pipe, and a fan are provided in the burner, the cleaning plate is provided at the upper end of the burner, a gas cylinder is provided at the lower end of the burner, an air cylinder is provided below the gas cylinder, a heat recovery pipe is provided below the middle part of the burner, the upper end of the heat recovery pipe is connected to the burner in a funnel shape through a recovery port, the air pipe is provided at the bottom of the burner, and the upper end of the air pipe is connected to a gas mixing cylinder. The combustion ring of the burner of the present invention can be lifted and lowered, and the lifting and lowering of the combustion ring at different positions can be controlled to achieve the purpose of adapting to different cooking utensils.

Description

Technical Field

[0001] The present invention relates to the field of gas stoves, and in particular to a liftable secondary combustion-supporting burner. Background Art

[0002] Carbon neutrality refers to the process whereby an enterprise, group or individual measures the total amount of greenhouse gas emissions generated directly or indirectly within a certain period of time, and offsets its own carbon dioxide emissions through tree planting, energy conservation and emission reduction, thereby achieving zero carbon dioxide emissions.

[0003] As a new form of environmental protection, it has been adopted by more and more large-scale events and conferences, promoting green living and production, and achieving green development in the whole society.

[0004] The tabletop stove is mainly composed of the burner (burner head, inner and outer fire covers), valve body (including nozzle, damper plate, conical spring), shell (can be a split shell - panel, back plate and left and right side panels);

[0005] When a gas stove is working, gas enters the stove from the air inlet pipe, is adjusted by the gas valve (adjusted by the user through the knob), and enters the burner. At the same time, it is mixed with a portion of air (this part of air is called primary air). This mixed gas is ejected from the fire hole of the ignition distributor and ignited by the ignition device to form a flame (the air required for combustion is called secondary air). This flame is used to heat the cookware placed on the pot support;

[0006] When the current burner is working, gas is introduced and mixed with air for combustion. However, during the combustion process, as the working time increases, the contact between gas and air becomes thinner. At this time, the burning gas is incompletely burned, which will produce carbon monoxide and other harmful gases, which are harmful to the human body and have a certain impact on the environment.

[0007] Operation errors or forgetting to close the valve may cause gas leakage, which may cause explosion and potential danger, and may cause personal injury.

[0008] Therefore, the existing technology has defects, and a burner that can carry out continuous and full combustion of gas is needed to ensure human health while taking into account energy conservation and emission reduction. Summary of the Invention

[0009] Therefore, the present invention is made in view of the above problems. The purpose of the present invention is to use the burner stove that can be raised and lowered to preheat the air and gas, fully mix the gas and air, and perform secondary air combustion, etc., to solve the problems of low applicability, low combustion efficiency, and great environmental impact of current burners. The present invention achieves the above purpose through the following technical solutions:

[0010] The invention relates to a secondary combustion-supporting burner which can be raised and lowered, comprising: a burner and a stove. The burner is embedded in the stove. A control unit is provided on one side of the upper end of the stove. A cleaning plate, a gas cylinder, an air cylinder, a heat recovery pipe, an air pipe, a gas pipe and a fan are provided in the burner. The cleaning plate is provided at the upper end of the burner. A gas cylinder is provided at the lower end of the burner. An air cylinder is provided below the gas cylinder. The heat recovery pipe is provided below the middle of the burner. The upper end of the heat recovery pipe is connected to the burner in a funnel shape through a recovery port. The air pipe is provided at the bottom of the burner. The upper end of the air pipe is connected to a gas mixing cylinder. An air pipe branch is provided on the side wall of the air pipe. A hole is provided on the other side wall of the air pipe for the heat recovery pipe to extend into. Hole, the gas pipe is arranged at the bottom of the burner, the upper end of the gas pipe is connected to the interior of the gas mixing cylinder through the air outlet, the upper end of the gas mixing cylinder is connected to the gas cylinder through the input pipe, the upper end of the gas pipe and the interior of the gas mixing cylinder is provided with a rotating head, a fan is provided in the air pipe, the burner comprises a burner frame, combustion ring 1, combustion ring 2, combustion ring 3, igniter, and screen, the upper end of the burner frame is provided with combustion ring 1, combustion ring 2, combustion ring 3, the igniter is arranged at the internal center of the burner, the screen is arranged on the outside of the igniter, a plurality of gas pipes are provided at the upper ends of the gas cylinder and the air cylinder, the fan is provided with two layers, and the fan is an integral structure, wherein the outer fan blades are in opposite directions to the inner fan blades.

[0011] Preferably, the burner frame is provided with an inclined surface, a cleaning groove, and a baffle. There are three inclined surfaces, and the three inclined surfaces are perpendicular to each other. The cleaning groove is arranged on the periphery of the burner. The cleaning groove is an annular groove, and a baffle is arranged on the outside of the cleaning groove.

[0012] Preferably, combustion ring 1, combustion ring 2 and combustion ring 3 are respectively provided with air ring 1, air ring 2 and air ring 3, and the side walls of air ring 1, air ring 2 and air ring 3 are all provided with air ports.

[0013] Preferably, the upper part and side walls of combustion ring one, combustion ring two and combustion ring three are all provided with gas ports, and porous isolation plates are provided on the gas ports. Combustion ring one, combustion ring two and combustion ring three are all telescopic structures. Combustion ring one, combustion ring two and combustion ring three have the same shape, and the diameter of combustion ring three is larger than the diameter of combustion ring two, and the diameter of combustion ring two is larger than the diameter of combustion ring one.

[0014] Preferably, the cleaning plate is a rectangular strip structure with a hollow interior, and a handle, a spring, and a cleaning groove are provided inside the cleaning plate. The spring is provided at the lower end of the handle, and the bottom of the cleaning groove is in an inclined shape.

[0015] Preferably, the gas pipe at the upper end of the gas cylinder extends into the interior of combustion ring 1, combustion ring 2, and combustion ring 3 respectively, and the gas pipe at the upper end of the air cylinder extends into the interior of air ring 1, air ring 2, and air ring 3 respectively.

[0016] Preferably, the lower end of the air pipe branch is in the shape of a semicircular tube, and the upper end of the air pipe branch is connected to the interior of the air cylinder.

[0017] Preferably, the heat recovery pipe, the air pipe, and the gas pipe are arranged on the same axis, and the air pipe, the heat recovery pipe, and the gas pipe are arranged in order from the outside to the inside.

[0018] Preferably, the outer fan blades are arranged between the air pipe and the heat recovery pipe, and the wind direction is from outside to inside. The inner fan blades are arranged between the heat recovery pipe and the gas pipe, and the wind direction is from inside to outside. The rotation of the fan drives the rotating head to rotate.

[0019] Beneficial effects of the present invention:

[0020] 1. The combustion ring of the burner of the present invention can be raised and lowered. By controlling the raising and lowering of the combustion ring at different positions, it can be adapted to different cooking utensils.

[0021] 2. The combustion ring of the present invention has a porous shielding net on the upper gas hole to prevent oil from entering the gas port during cooking and causing blockage. An air ring is provided in the middle of the combustion ring, and air is provided by the lower air cylinder to assist the combustion of the gas, making the gas burn more fully, improving combustion efficiency and being more environmentally friendly.

[0022] 3. The burner frame of the present invention is provided with a sloped surface in the cross direction, which facilitates the sliding of oil and other debris generated during operation into the cleaning groove; a cleaning plate is provided at the upper end, which can be taken out after the operation is completed to scrape off the oil on the burner surface;

[0023] 4. When the combustion ring of the present invention is not in operation or is turned off, the combustion ring retracts into the burner, the gas pipe is in close contact with the upper part of the combustion ring, and the gas introduced by the gas pipe cannot be discharged from the gas port. In other words, when the burner is not in operation, the gas will not be discharged from the gas port, eliminating the safety hazard caused by forgetting to turn off the gas.

[0024] 5. The heat recovery pipe, air pipe, and gas pipe of the present invention are coaxially arranged, and the three pipes are nested. The hot gas in the heat recovery pipe can preheat the input air and gas during the outflow process, so that the subsequent combustion and combustion-supporting are more efficient.

[0025] 6. The fan blades of the present invention are provided with two layers, which are arranged in opposite directions, so that the fan rotation can generate two wind forces in opposite directions; the outer ring is arranged in the heat recovery pipe, absorbs the hot gas, burns it and discharges it outward; the inner ring is arranged in the air pipe, sucks in air, and allows the air to enter the burner for mixing and combustion support;

[0026] 7. The front end of the gas pipe of the present invention can rotate and is fixed to the fan. It rotates with the fan and sprays the gas from the gas port in the gas mixing cylinder. This can improve the mixing efficiency of gas and air to a certain extent, improve the completeness of combustion, and reduce carbon dioxide emissions.

[0027] 8. The air pipe of the present invention is provided with an air pipe branch, and the end of the air pipe branch is provided with a protrusion to block the process of air passing into the gas mixing cylinder, so that a part of the air can enter the burner through the air pipe branch to assist the combustion of the gas.

[0028] 9. The present invention aims to ensure that the gas can be fully burned and the stove surface is clean, and has the following main advantages: reducing the emission of harmful gases, reducing damage to the human body, reducing damage to the environment, saving energy and reducing emissions, and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of the present invention.

[0030] Figure 2 Schematic diagram of the burner of the present invention Figure 1 .

[0031] Figure 3 Schematic diagram of the burner of the present invention Figure 2 (Looking down).

[0032] Figure 4 The working state of the burner of the present invention is shown in FIG. Figure 1 .

[0033] Figure 5 The working state of the burner of the present invention is shown in FIG. Figure 2 .

[0034] Figure 6 Schematic diagram of the cleaning plate of the present invention.

[0035] Figure 7 This is a schematic diagram of all components inside the stove of the present invention (lower end of the burner).

[0036] Figure 8 It is a schematic cross-sectional view of the internal components of the stove of the present invention.

[0037] Figure 9 This is a partial enlarged schematic diagram of the present invention Figure 1 .

[0038] Figure 10 This is a partial enlarged schematic diagram of the present invention Figure 2 .

[0039] Figure 11 It is a schematic diagram of the gas cylinder and the air cylinder of the present invention.

[0040] Figure 12 This is a schematic diagram of the trachea state in the working state of the present invention.

[0041] Figure 13 This is a schematic diagram of the trachea in the resting state of the present invention.

[0042] In the figure, 1. burner; 11. burner frame; 111. inclined plane; 112. cleaning groove; 113. baffle; 12. combustion ring 1; 121. air ring 1; 122. gas port; 123. air port; 13. combustion ring 2; 131. air ring 2; 14. combustion ring 3; 141. air ring 3; 15. igniter; 16. screen; 2. cleaning plate; 21. handle; 22. spring; 23. cleaning groove; 3. gas cylinder; 31. gas pipe; 4. air cylinder; 5. hot gas recovery pipe; 51. recovery port; 6. air pipe; 61. air pipe branch; 7. gas pipe; 71. gas mixing cylinder; 72. inlet pipe; 73. air outlet; 74. rotating head; 8. fan; 81. outer fan blade; 82. inner fan blade; 9. stove; 91. control unit. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that it is easy for a person skilled in the art to implement these embodiments; however, the present invention can also be implemented in various different forms, so the present invention is not limited to the embodiments described below; in addition, in order to more clearly describe the present invention, parts that are not connected to the present invention will be omitted from the accompanying drawings.

[0044] like Figure 1 As shown, a liftable secondary combustion burner includes a burner 1 and a stove 9;

[0045] The burner 1 is the main combustion generating device, and the burner 1 is embedded in the stove 9;

[0046] The stove 9 is a rectangular block structure. A control unit 91 is provided on the upper end surface of the stove 9. The control unit 91 is a switch and control unit of the gas stove, which is used to control the lifting and lowering of each combustion ring of the burner 1, the start and stop of the igniter 15, and the amount of gas input (the size of the flame).

[0047] The burner 1 is provided with a cleaning plate 2, a gas cylinder 3, an air cylinder 4, a hot gas recovery pipe 5, an air pipe 6, a gas pipe 7, and a fan 8;

[0048] like Figure 1 As shown, the burner 1 is a combustion generating device, the upper end of which is used to place cooking pots, and the lower end is provided with gas delivery and burner-related control components;

[0049] like Figure 6 As shown, the cleaning plate 2 is a rectangular strip structure, which is arranged inside the groove on the upper end surface of the burner 1. The user can manually control the rotation of the cleaning plate 2 to clean the oil, dust, etc. on the upper surface of the burner 1;

[0050] like Figure 7 As shown, the gas cylinder 3 is a hollow disc-shaped structure for storing gas mixed with air;

[0051] The air cylinder 4 is a hollow disc-shaped structure for storing air transported from the external environment into the air cylinder 4;

[0052] The heat recovery pipe 5 is used to absorb and discharge the heat generated by the combustion at the upper end of the burner 1;

[0053] The air pipe 6 is an air transport pipe for sucking in external air and finally transporting it into the air cylinder 4;

[0054] like Figure 8 As shown, the gas pipe 7 is a gas transportation channel for transporting gas into the interior of the gas mixing cylinder 71;

[0055] like Figure 10 As shown, the fan 8 is a bidirectional fan that discharges the hot gas generated by the burner 1 to the outside of the device through the hot gas recovery pipe 5 and draws air into the device through the air pipe 6;

[0056] like Figure 2-Figure 5 As shown, the burner 1 is provided with a burner frame 11, a combustion ring 12, a combustion ring 2 13, a combustion ring 14, an igniter 15, and a screen 16;

[0057] The burner frame 11 is the basic frame of the burner 1; the burner frame 11 is provided with an inclined surface 111, a cleaning groove 112, and a baffle 113; the three inclined surfaces 111 are arranged vertically in sequence, and the inclined surfaces facilitate the oil stains dripping thereon to enter the cleaning groove 112 along the inclined surfaces 111. The cleaning groove 112 is an annular groove, which is arranged on the periphery of the burner 1, and a baffle 113 is provided on the outer side thereof for blocking and limiting oil stains and debris. At the same time, a groove is provided on the inner wall thereof for the cleaning plate 2 to rotate.

[0058] The combustion ring 12 is arranged at the innermost side of the burner 1. The burner 1 is provided with an air ring 121, a gas port 122, and an air port 123. An air ring 121 is provided in the middle of the combustion ring 12. An air port 123 is provided on the side wall of the air ring 121 for blowing out air to assist gas combustion. Gas ports 122 are provided on the upper part and side wall of the combustion ring 12. The gas port 122 located on the upper part of the combustion ring 12 is provided with a porous isolation plate to prevent oil and other debris from entering the gas port 122 and causing blockage to a certain extent.

[0059] The second combustion ring 13 has the same shape as the first combustion ring 12 but has a larger diameter. It is located in the middle of the burner 1 and has the same function and principle as the first combustion ring 12. The second combustion ring 13 is also provided with a second air ring 131, a gas port 122, and an air port 123.

[0060] The combustion ring 3 14 is the same shape as the combustion ring 2 13 but with a larger diameter. It is arranged on the outside of the burner 1 and has the same function and principle as the combustion ring 2 13. The combustion ring 3 14 is also provided with an air ring 3 141, a gas port 122, and an air port 123.

[0061] The combustion ring 12, the combustion ring 2, the combustion ring 13, and the combustion ring 3, 14, can all independently perform lifting movements. The lifting movements of the combustion rings 12, 13, and 14 are individually controlled by a pushing device provided below each combustion ring inside the burner 1. The lifting movements of the combustion rings can be controlled by a control unit 91 provided on the stove 9.

[0062] The igniter 15 is provided at the inner center of the burner 1 and is used to ignite the gas to generate a flame;

[0063] The screen 16 is arranged around the igniter 15 to prevent large debris or oil from entering the air recovery pipe 5;

[0064] like Figure 4 As shown in the figure, combustion ring 12 and combustion ring 2 13 are in an extended state, and combustion ring 3 14 is in a retracted state, which is a schematic diagram of the working state when heating a smaller diameter cooking pot. At this time, combustion ring 3 14 is in a retracted state, the gas pipe for transporting gas is in close contact with the inner wall of combustion ring 3 14, there is no gas circulation, and combustion ring 3 14 is not burning;

[0065] like Figure 5 As shown in the figure, the burning ring 12, the burning ring 2 13, and the burning ring 3 14 are all in the extended state, which is a schematic diagram of the working state of a larger diameter cooking pot;

[0066] like Figure 6As shown, the cleaning plate 2 is a rectangular strip structure with a hollow interior. A handle 21, a spring 22, and a cleaning groove 23 are provided inside the cleaning plate 2. The user can rotate the cleaning plate 2 by holding the handle 21 to clean the oil, dust, etc. on the upper end surface of the burner 1. The spring 22 is provided at the lower end of the handle 21, which can retract the handle 21 downward and remove it from the groove on the side wall of the baffle 113 of the burner 1 (as shown in FIG. Figure 5 A rectangular groove is provided at the end of the middle cleaning plate 2 and around the baffle 113); the bottom of the cleaning groove 23 is inclined, which facilitates the collection of oil, dirt and other debris on the upper part of the burner 1 into the cleaning groove 23;

[0067] like Figure 7 、 Figure 8 、 Figure 11 As shown, the gas cylinder 3 and the air cylinder 4 can be combined into an annular cylinder. A plurality of gas pipes 31 are opened on the gas cylinder 3 and the air cylinder 4. The gas pipes 31 extend into the interior of the combustion ring 12, the combustion ring 2 13, and the combustion ring 3 14 for transporting the mixed gas and air.

[0068] like Figure 7-11 As shown, the pipelines at the bottom of the burner 1 are mainly provided with an air recovery pipe 5, an air pipe 6, a gas pipe 7 and a power source fan 8;

[0069] The air recovery pipe 5 is provided below the middle of the burner 1. One end of the air recovery pipe 5 connected to the burner 1 is provided with a recovery port 51. The recovery port 51 is a funnel-shaped structure for facilitating the recovery of hot air.

[0070] The air pipe 6 is arranged at the bottom of the burner 1, on one side of the air recovery pipe 5, for transporting air to the interior of the device, and the upper end is connected to the gas mixing cylinder 71, which mixes the air and gas inside; an air pipe branch 61 is provided on the side wall of the air pipe 6, and the air pipe branch 61 is inserted into the main pipe of the air pipe 6 at one end, which is in the shape of a semicircular tube with a notch at the bottom, blocking part of the air transported upward by the air pipe 6, so that part of the air will enter the air cylinder 4 along the air pipe branch 61, providing air to the interior when the burner 1 is burning, so that the combustion of the gas is more complete; the other side wall of the air pipe 6 (the symmetrical side) is provided with a hole for the hot gas recovery pipe 5 to extend into, so that the hot gas recovery pipe 5 is arranged inside the air pipe 6;

[0071] The gas pipe 7 is arranged at the bottom of the burner 1, on the other side of the air pipe 6 (away from the air recovery pipe 5), and is used to transport gas into the device. The upper end extends into the gas mixing cylinder 71, so that the gas and air are mixed, and then transported into the gas cylinder 3 through the input pipe 72; the gas pipe 7 inside the gas mixing cylinder 71 is provided with an outlet 73 to transport the gas into the interior. At the same time, the upper end of the gas pipe 7 is provided with a rotating head 74, which is connected to the lower end of the gas pipe 7 and can rotate at the same time, so that the gas rotates when it is input, which can improve the mixing efficiency of the gas and air to a certain extent, making the combustion more complete;

[0072] The bottom connections of the heat recovery pipe 5, the air pipe 6, and the gas pipe 7 are located on the same axis and are relatively nested. From the outside to the inside, they are the air pipe 6, the heat recovery pipe 5, and the gas pipe 7. The hot air recovered by the heat recovery pipe 5 passes through the inner and outer walls of the air pipe 6 and the gas pipe 7, preheating the air and gas entering the device from the outside through the air pipe 6 and the gas pipe 7, thereby making the gas combustion more efficient.

[0073] The fan 8 is provided with two layers, and the fan 8 is an integral structure, in which the outer blades 81 and the inner blades 82 are in opposite directions and rotate at the same time to provide opposite airflows; the outer blades 81 are arranged between the air pipe 6 and the heat recovery pipe 5, and the wind direction is from outside to inside, so as to suck the air into the interior; the inner blades 82 are arranged between the heat recovery pipe 5 and the gas pipe 7, and the wind direction is from inside to outside, so as to suck the hot air flow generated by the combustion of the gas from the inside out of the heat recovery pipe 5; the center part of the fan 8 is connected to the rotating head 74 of the gas pipe 7, and the rotation of the fan 8 drives the rotating head 74 of the gas pipe 7 to rotate at the same time, wherein a belt is provided around the diameter of the fan 8 to drive the rotation (the belt is not shown in the figure), one end of the belt is wrapped around the fan 8, and the other end is driven to rotate by a driving device such as a motor arranged outside, providing the power required for the rotation of the fan 8 (the belt and motor are not shown in the figure, the belt and motor are arranged on one side of the fan 8, and are arranged inside the entire device);

[0074] like Figure 12 As shown, this figure is a schematic diagram of the position of the air pipe 31 and the air ring 121 when the combustion ring 12 is extended. At this time, air can flow from the air pipe 31 through the air port 123 to assist the combustion of the gas. The positional relationship and working principles of the air pipe 31 and the air ring 121 inside the gas port 122 of the combustion ring 12 are exactly the same. The bottom air pipe 31 of the gas port 122 of the combustion ring 12 is set between the two gas ports 122 and is provided with an annular channel inside to connect with the gas port 122.

[0075] like Figure 13As shown in the figure, this figure is a schematic diagram of the position status of the air pipe 31 and the air ring 121 when the combustion ring 12 is in the contracted state. At this time, air cannot flow from the air pipe 31 into the air port 123, and the channel is in a closed state; the position relationship and working principle of the air pipe 31 and the air ring 121 inside the gas port 122 of the combustion ring 12 are exactly the same. When in the contracted state (a single combustion ring is contracted or closed after work), the gas channel is closed, which can effectively prevent gas leakage and avoid personal safety hazards.

[0076] Basic principles of the present invention:

[0077] During operation, the control unit 91 is operated to select the number of combustion rings to be extended according to the size of the cooking pot, the gas flows, the igniter 15 is turned on, the gas is ignited, and the pot is heated. The hot gas generated by the heating passes through the screen 16 and enters the heat recovery pipe 5. The hot gas passes through the air pipe 6 and the gas pipe 7 to preheat the internal air and gas, so that it is more efficient in the subsequent combustion process. The heat recovery pipe 5 can then be connected to devices such as hot water, ovens, and air fryers to recover and reuse waste heat, utilize waste gas, reduce pollution, and save energy and reduce emissions. A part of the air inside the air pipe 6 enters the air cylinder 4 through the air pipe branch 61, and then passes through the gas provided thereon. The pipe 31 enters the air rings (air ring 1 121, air ring 2 131, air ring 3 141), and is output from the air port 123 to assist the combustion process of the gas, preventing the gas from being incompletely mixed during mixing and performing secondary combustion. Other air enters the gas mixing cylinder 71 to mix with the gas and improve the gas combustion efficiency. The gas in the gas pipe 7 is rotated by the fan 8 driving the rotating head 74 and injected into the gas mixing cylinder 71. The gas rotates into the interior, which can make the gas and air mix more fully to a certain extent, and then enters the gas cylinder 3 through the input pipe 72, and enters the combustion ring through the gas pipe 31 provided thereon for combustion.

[0078] At the end of the work, close all valves, extinguish the flame, and shrink the combustion ring into the interior of the burner 1. At this time, the gas and air channels on the burner 1 are completely closed ( Figure 13 state), which can effectively prevent gas leakage caused by forgetting to close the valve, avoid hidden dangers to personal safety, and solve potential risks; then control the cleaning plate 2 to rotate along the upper end of the burner 1 for a few weeks to clean the oil and debris trapped on the upper part, and the oil enters the cleaning groove 112 along the inclined surface 111 for thorough cleaning, and the cleaning plate 2 can be taken out along the side wall of the baffle 113, press the handle 21 to compress the spring 22, and take out the cleaning plate 2. After cleaning, put it back to its original place;

[0079] The present invention aims to ensure that the gas can be fully burned and the stove surface is clean; it mainly has the advantages of reducing the emission of harmful gases, reducing damage to the human body, reducing damage to the environment, saving energy and reducing emissions, and protecting the environment.

Claims

1. A secondary air combustion burner that can be raised and lowered, comprising: Burner (1); the burner (1) is embedded in a stove (9), and a control unit (91) is provided on the stove (9); the burner (1) is characterized in that: a cleaning plate (2) is provided on the upper end surface of the burner (1), a gas cylinder (3) is provided at the lower end of the burner (1), an air cylinder (4) is provided below the gas cylinder (3), and a heat recovery pipe (5), an air pipe (6), and a gas pipe (7) are provided below the burner (1); the gas pipe (7) is provided inside the air pipe (6); the heat recovery pipe (5) extends into the air pipe (6) and is provided on the outer periphery of the gas pipe (7); The burner (1) comprises a burner frame (11); a combustion ring 1 (12), a combustion ring 2 (13), and a combustion ring 3 (14) are provided at the upper end of the burner frame (11); an igniter (15) is provided at the inner center of the burner (1), and a screen (16) is provided on the outer side of the igniter (15); an air ring 1 (121), an air ring 2 (131), and an air ring 3 (141) are provided on the combustion ring 1 (12), the combustion ring 2 (13), and the combustion ring 3 (14), respectively; a plurality of air pipes (31) are provided at the upper ends of the gas cylinder (3) and the air cylinder (4); the upper end of the air pipe (6) is connected to the gas mixing cylinder (71), and the upper end of the air pipe branch (61) on the side wall of the air pipe (6) is communicated with the inside of the air cylinder (4); the upper end of the gas pipe (7) is connected to the inside of the gas mixing cylinder (71). The gas mixing cylinder (71) and the gas cylinder (3) are connected via an air outlet (73), the upper end of the gas mixing cylinder (71) and the gas cylinder (3) are connected via an input pipe (72), and a rotating head (74) is provided inside the gas mixing cylinder (71); the gas pipe (31) at the upper end of the gas cylinder (3) extends into the interior of the combustion ring 1 (12), the combustion ring 2 (13), and the combustion ring 3 (14), respectively; the gas pipe (31) at the upper end of the air cylinder (4) extends into the interior of the air ring 1 (121), the air ring 2 (131), and the air ring 3 (141), respectively, wherein the combustion ring 1 (12), the combustion ring 2 (13), and the combustion ring 3 (14) can independently perform lifting movements; when the combustion ring is not working or is closed, the combustion ring retracts into the burner, the gas pipe (31) is in close contact with the upper part of the combustion ring, and the gas introduced by the gas pipe (7) cannot be discharged from the gas port.

2. The liftable secondary air combustion burner according to claim 1, characterized in that: The upper end of the hot gas recovery pipe (5) is connected to the burner (1) via a recovery port (51) in a funnel shape.

3. The liftable secondary air combustion burner according to claim 2, characterized in that: A fan (8) is provided in the air pipe (6). The fan (8) is provided with two layers. The fan (8) is an integral structure, wherein the outer fan blades (81) and the inner fan blades (82) are in opposite directions.

4. The liftable secondary air combustion burner according to claim 3, characterized in that: The burner frame (11) is provided with an inclined surface (111), a cleaning groove (112), and a baffle (113). The inclined surfaces (111) are provided with three, and the three inclined surfaces (111) are vertical in sequence. The cleaning groove (112) is provided on the periphery of the burner (1), and the cleaning groove (112) is an annular groove. The baffle (113) is provided on the outside of the cleaning groove (112).

5. The liftable secondary air combustion burner according to claim 4, characterized in that: The side walls of the air ring 1 (121), the air ring 2 (131), and the air ring 3 (141) are all provided with air ports (123); the upper parts and side walls of the combustion ring 1 (12), the combustion ring 2 (13), and the combustion ring 3 (14) are all provided with gas ports (122), and a porous isolation plate is provided on the gas ports (122).

6. The liftable secondary air combustion burner according to claim 5, characterized in that: The combustion ring 1 (12), the combustion ring 2 (13), and the combustion ring 3 (14) are all lifting structures; the combustion ring 1 (12), the combustion ring 2 (13), and the combustion ring 3 (14) have the same shape, and the diameter of the combustion ring 3 (14) is larger than the diameter of the combustion ring 2 (13), and the diameter of the combustion ring 2 (13) is larger than the diameter of the combustion ring 1 (12).

7. The liftable secondary air combustion burner according to claim 6, characterized in that: The cleaning plate (2) is a rectangular strip structure with a hollow interior. A handle (21), a spring (22), and a cleaning groove (23) are provided inside the cleaning plate (2); the spring (22) is provided at the lower end of the handle (21), and the bottom of the cleaning groove (23) is in an inclined shape.

8. The liftable secondary air combustion burner according to claim 7, characterized in that: The outer fan blades (81) are arranged between the air pipe (6) and the heat recovery pipe (5), with the wind direction from outside to inside. The inner fan blades (82) are arranged between the heat recovery pipe (5) and the gas pipe (7), with the wind direction from inside to outside. The rotation of the fan (8) drives the rotating head (74) to rotate.

Images