A combustion furnace

Abstract

The present application relates to the technical field of burner, disclose a kind of combustion furnace, comprising: burner;Support unit, including lifting drive and support, the lifting drive is driven connection the support, the lifting drive can drive the support up and down activity, the support unit is provided with multiple around the burner, when using, the heated pot can be adjusted height up and down, to better control the state of pot heating, and it is favorable to improve the heating efficiency of burner under different fire state.

Description

Technical Field

[0001] This invention relates to the field of burner technology, and more particularly to a combustion furnace. Background Technology

[0002] The combustion furnace contains a support frame to hold the cookware, with the burner heating the cookware from below. Currently, the support frame is typically fixed inside the furnace, providing a constant height for the cookware. When the burner's flame size is adjusted, the distance at which the cookware is heated also changes. Because the support frame's height over the cookware remains constant, it's difficult to adjust the flame's heating efficiency. Therefore, there is an urgent need for a combustion furnace that allows for better control of heating efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a combustion furnace to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this invention is:

[0005] A combustion furnace includes: a burner; and a support unit including a lifting drive and a bracket, wherein the lifting drive is driven to connect to the bracket and can move the bracket up and down, and multiple support units are arranged around the burner.

[0006] This technical solution has at least the following beneficial effects: In use, the pot to be heated is placed on a support frame with multiple support units, and the pot is heated by the burner. When the heating temperature of the pot needs to be reduced, in addition to reducing the burner's flame output, the support frame can be moved upward by the lifting drive component, so that the pot is away from the flame. At this time, the efficiency of the burner's flame in heating the pot is reduced. When it is necessary to increase the efficiency of the burner's flame in heating the pot, the height of the support frame can be adjusted by moving it up and down by the lifting drive component, so that the bottom of the pot is close to the outer flame of the flame. For example, when the burner's flame output is reduced, the lifting drive component moves the support frame downward; when the burner's flame output is increased, the lifting drive component moves the support frame upward, thereby ensuring that the bottom of the pot is heated by the outer flame of the flame. In this way, the height of the pot to be heated can be adjusted up and down during use, thereby better controlling the heating state of the pot and improving the heating efficiency of the burner under different flame output states.

[0007] As a further improvement to the above technical solution, the burner is connected to an air inlet pipe, and a flow controller is provided on the air inlet pipe. The flow controller is used to adjust the air volume of the air inlet pipe. Multiple lifting drive components are configured to drive the bracket to move up and down according to the air volume of the air inlet pipe. When the air volume of the air inlet pipe decreases, the lifting drive component moves downward; when the air volume of the air inlet pipe increases, the lifting drive component moves upward.

[0008] As a further improvement to the above technical solution, the flow controller is a rotary regulating valve. The rotary regulating valve has a rotatable knob, and an adjusting protrusion is connected to the outside of the knob. Multiple limit switches are arranged on the rotation path of the adjusting protrusion. Each limit switch is electrically connected to multiple lifting drive components. The adjusting protrusion can be rotated to turn on any one of the limit switches.

[0009] As a further improvement to the above technical solution, a height detector is provided on the top side of the burner. The height detector is used to detect the heating distance between the heating surface to be heated by the burner and the burner. The lifting drive can drive the bracket to move upward according to the heating distance.

[0010] As a further improvement to the above technical solution, the number of support units is four.

[0011] As a further improvement to the above technical solution, the top surface of the bracket is inclined downward along the direction close to the burner, and the top surface of the bracket is provided with a plurality of first retaining teeth along the direction close to the burner.

[0012] As a further improvement to the above technical solution, the bracket is rotatably connected to a support member near the top corner of the burner, and the support member can be rotated to the top side of the bracket or rotated to tilt downward toward the burner.

[0013] As a further improvement to the above technical solution, the side of the bracket away from the burner has an upwardly protruding limiting part.

[0014] As a further improvement to the above technical solution, the limiting part is provided with a limiting concave angle near the top corner of the burner.

[0015] As a further improvement to the above technical solution, the top surface of the support member is provided with a plurality of second retaining teeth along the direction close to the burner.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the connection structure between the burner and the support unit of the present invention.

[0019] Figure 2 This is a schematic diagram of the rotary control valve and limit switch working together according to the present invention.

[0020] Figure 3 This is a schematic diagram of the usage state switching of the bracket embodiment 2 of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal ventilation structure of the air distribution valve of the present invention. Figure 1 The arrows indicate the direction of the airflow.

[0022] Figure 5 This is a schematic diagram of the internal ventilation structure of the air distribution valve of the present invention. Figure 2 The arrows indicate the direction of the airflow.

[0023] Figure 6 This is a top view of the burner of the present invention, in which the dashed lines indicate the partition plate, the first guide vane and the second guide vane, and the arrows indicate the airflow direction.

[0024] Figure 7 This is a schematic diagram of the internal structure of the first ejector tube of the present invention, wherein the arrows indicate the airflow direction.

[0025] In the attached diagram: 100-burner, 110-intake pipe, 120-flow controller, 121-adjusting protrusion, 130-limit switch, 140-height detector, 210-lifting drive component, 220-bracket, 221-first locking tooth, 230-support component, 231-second locking tooth, 232-limiting part, 233-limiting concave angle, 310-first flameout port, 320-second flameout port, 330-first ejector tube, 331-first mixing cylinder, 332-... - First straight section, 333- First narrowing section, 334- First connecting rib, 335- First guide groove, 340- Second ejector tube, 350- Partition plate, 360- First guide vane, 370- Second guide vane, 410- Air distribution valve, 411- Valve seat, 412- Valve core, 413- First channel, 414- First flow channel, 415- Second channel, 416- Second flow channel, 420- Air inlet pipe, 430- First air distribution pipe, 440- Second air distribution pipe. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0028] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0030] Reference Figure 1 A combustion furnace includes a burner 100 and a support unit. The support unit includes a lifting drive 210 and a bracket 220. The lifting drive 210 drives and connects to the bracket 220, and the lifting drive 210 can drive the bracket 220 to move up and down. The lifting drive 210 has various structural forms, such as a hydraulic cylinder or a lead screw. Naturally, due to the high ambient temperature, the lifting drive 210 needs to be made of high-temperature resistant material. For example, a high-temperature resistant electric lead screw can be used. Multiple support units are arranged around the burner 100.

[0031] As described above, in use, the pot to be heated is placed on the support 220 of multiple support units, and the burner 100 heats the pot. When the heating temperature of the pot needs to be reduced, in addition to reducing the flame output of the burner 100, the support 220 can be moved upward by the lifting drive 210, so that the pot is away from the flame. At this time, the heating efficiency of the burner 100 is reduced. When it is necessary to increase the heating efficiency of the burner 100, the support 220 is moved upward by the lifting drive 210. The height can be adjusted vertically to bring the bottom of the cookware closer to the outer flame of the flame. For example, when the flame output of the burner 100 decreases, the lifting drive 210 moves the support 220 downward; when the flame output of the burner 100 increases, the lifting drive 210 moves the support 220 upward. This ensures that the bottom of the cookware is heated using the outer flame of the flame. In this way, the height of the cookware can be adjusted vertically during use, thereby better controlling the heating state of the cookware and improving the heating efficiency of the burner 100 under different flame output states.

[0032] When the flameout state of the burner 100 changes, the lifting drive 210 can be adjusted according to the flame size. In this embodiment, the lifting drive 210 is adjusted according to the gas supply to the burner 100. Specifically, the burner 100 is connected to an air inlet pipe 110, which is used to supply gas. A flow controller 120 is provided on the air inlet pipe 110, which is used to adjust the air flow of the air inlet pipe 110. Multiple lifting drive components 210 are configured to drive the bracket 220 to move up and down according to the air flow of the air inlet pipe 110. When the air flow of the air inlet pipe 110 decreases, the lifting drive component 210 moves downward; when the air flow of the air inlet pipe 110 increases, the lifting drive component 210 moves upward. When the flow controller 120 adjusts the air intake pipe 110 to a smaller volume, the flame emitted by the burner 100 is smaller. At this time, the lifting drive 210 moves the bracket 220 downward, lowering the height of the supported pot, so that the heated surface of the bottom of the pot is closer to the outer flame of the flame. When the flow controller 120 adjusts the air intake pipe 110 to a larger volume, the flame emitted by the burner 100 is larger. At this time, the lifting drive 210 moves the bracket 220 upward, raising the height of the supported pot, so that the heated surface of the bottom of the pot adjusts its position according to the larger flame. In this way, the height of the bracket 220 is adjusted according to the air intake pipe 110 to better control the heating efficiency of the pot emitted by the burner 100.

[0033] The flow controller 120 is mainly used to adjust the airflow through the intake pipe 110. It can be a linear, movable adjustment, but in this embodiment, such as... Figure 2As shown, the flow controller 120 is a rotary regulating valve with a rotatable knob. An adjusting protrusion 121 is connected to the outside of the knob. Multiple limit switches 130 are arranged on the rotation path of the adjusting protrusion 121. Each limit switch 130 is electrically connected to multiple lifting drive components 210. The adjusting protrusion 121 can be rotated to turn on any one of the limit switches 130. When in use, the rotary regulating valve allows adjustment of the air volume through the intake pipe 110 by rotating its knob. Multiple limit switches 130 are installed along the rotation path of the knob. In practical applications, when each limit switch 130 is turned on, it can drive the support 220 to move to different heights via the corresponding lifting drive component 210. When the adjusting protrusion 121 rotates to any limit switch 130, that limit switch 130 is turned on. At this time, the multiple lifting drive components 210 drive the support 220 to move to the corresponding heights. Thus, when adjusting the air volume through the intake pipe 110 by rotating the knob, the height of the support 220 can also be adjusted accordingly, improving the heating efficiency of the burner 100.

[0034] When a cookware needs to be heated, the distance from the flame to the burner 100 varies because different cookware have different bottom shapes, such as arc or flat. To better suit different cookware, in this embodiment, a height detector 140 is provided on the top side of the burner 100. The height detector 140 is used to detect the heating distance between the heating surface to be heated by the burner 100 and the burner 100. The height sensor is a high-temperature resistant sensor. The lifting drive 210 can drive the bracket 220 to move upward according to the heating distance. When the cookware is placed on the support 220, the height sensor measures the distance between the cookware and the top of the burner 100. When the bottom of the cookware is flat, the heating surface of the cookware is coplanar with the plane of the top of the support 220. When the bottom of the cookware is arc-shaped, the heating surface of the cookware is lower than the plane of the top of the support 220. The height detector 140 measures the position of the lowest point of the cookware, from which the distance between the burner 100's flame position and the cookware's opposite position can be calculated. This distance is the heating distance. Then, the lifting drive 210 can move the support 220 upward, with the amount of movement being the heating distance. This can compensate for the downward movement of the cookware's flame position relative to the support 220. When the airflow of the air inlet pipe 110 changes, the lifting drive 210 can also accurately adjust the height of the support 220, improving the versatility for heating cookware of different shapes.

[0035] The cookware is mainly supported by the brackets 220 in the support unit. The number of support units can be between three and five. For example, there are four support units. In this case, the brackets 220 in the four support units provide support from the front, back, left and right positions of the cookware, so that the cookware can be placed stably.

[0036] As one embodiment of the support 220 supporting the cookware, the top surface of the support 220 is inclined downwards along the direction close to the burner 100, and the top surface of the support 220 is provided with a plurality of first locking teeth 221 along the direction close to the burner 100. When the cookware is placed on the top surface of the support 220, since the top surfaces of the multiple supports 220 are inclined downwards along the direction close to the burner 100, a space that narrows towards the burner 100 can be formed. At this time, the cookware can be placed quickly and easily. The first locking teeth 221 on the top surface of the support 220 can be used to lock and limit the bottom corners of the cookware, thereby improving the stability of the cookware placement.

[0037] As a second embodiment of the support 220 for supporting the cookware, such as Figure 3 As shown, a support member 230 is rotatably connected to the top corner of the bracket 220 near the burner 100. The support member 230 can rotate to the top side of the bracket 220 or rotate to tilt downwards towards the burner 100. In use, the cookware is placed on multiple brackets 220, and the support member 230 on the bracket 220 abuts against the cookware to provide support. When the cookware is small, the multiple support members 230 rotate to tilt downwards towards the burner 100. At this time, multiple support surfaces tilt against the outside of the cookware to provide limiting support, and the support member 230 itself can increase the direct heat conduction to the cookware. When the cookware is large, the multiple support members 230 rotate upwards to the top side of the bracket 220, and the bracket 220 itself supports the support member 230. In this way, by rotating the support member 230 on the bracket 220 to adjust its position, it can adapt to different cookware sizes and improve the stability of the cookware support.

[0038] When a large boiler is placed on support member 230, the support surface is in contact with the bottom surface of the boiler. To improve the boiler's positioning effect, in this embodiment, a protruding limiting part 232 is formed on the side of the bracket 220 away from the burner 100. A concave angle can be formed between the limiting part 232 and the support surface to limit the boiler's position. When a flat-bottomed boiler is placed on the top side of multiple support members 230, the multiple limiting parts 232 can limit the side walls of the boiler, further improving the stability of the boiler's placement.

[0039] Furthermore, the limiting part 232 is provided with a limiting concave angle 233 near the apex of the burner 100. When a larger boiler needs to be placed, the boiler can be placed within the limiting concave angles 233 of multiple limiting parts 232. In this case, the multiple limiting concave angles 233 are used directly to limit and support the boiler, further improving the overall versatility.

[0040] To improve the stability of the support member 230 in limiting the boiler when tilted, in this embodiment, the top surface of the support member 230 is provided with a plurality of second locking teeth 231 along the direction close to the burner 100. When placing a small boiler, the support member 230 rotates, and the second locking teeth 231 can lock into the bottom surface of the boiler near the corner, thereby further improving the stability of the boiler placement.

[0041] The present invention also includes accessory components, a burner 100, internally divided into a first mixing chamber and a second mixing chamber, the burner 100 having a first flame outlet 310 communicating with the first mixing chamber on its top side, the first flame outlet 310 having a plurality of such outlets surrounding the center of the burner 100, the burner 100 having a second flame outlet 320 communicating with the second mixing chamber on its top side, the second flame outlet 320 having a plurality of such outlets surrounding the center of the burner 100; and a gas distribution assembly for supplying gas to the first mixing chamber and / or the second mixing chamber.

[0042] Multiple first flame outlets 310 on the top side of the burner 100 form a first flame outlet zone, and multiple second flame outlets 320 form a second flame outlet zone. During use, the working states of the first and second flame outlet zones can be controlled separately according to different usage needs. Specifically, the gas distribution component supplies gas only to the first mixing chamber, at which time the gas in the first mixing chamber is dispersed outward through the multiple first flame outlets 310 and burns only in the area covered by the multiple first flame outlets 310; or the gas distribution component supplies gas only to the second mixing chamber, at which time the gas in the second mixing chamber is dispersed outward through the multiple second flame outlets 320 and burns only in the area covered by the multiple second flame outlets 320; or the gas distribution component supplies gas to both the first and second mixing chambers at the same time, at which time the multiple first flame outlets 310 and the multiple second flame outlets 320 simultaneously emit gas and burn. In this way, independently controllable flame outlet zones are formed, which can heat different parts of the pot separately, thereby adapting to different heat requirements and improving the flexibility and thermal efficiency of use.

[0043] As a specific structural form of the valve train, such as Figure 4 , Figure 5As shown, in this embodiment, the gas distribution assembly includes a gas distribution valve 410, an air inlet pipe 420, a first gas distribution pipe 430, and a second gas distribution pipe 440. The gas distribution valve 410 includes a valve seat 411 and a valve core 412 rotatably connected to the valve seat 411. The valve seat 411 has a first channel 413 and a first flow channel 414 perpendicular to and connected to the first channel 413. One end of the first channel 413 is connected to the first mixing chamber through the first gas distribution pipe 430, and the other end of the first channel 413 is connected to the second mixing chamber through the second gas distribution pipe 440. The air inlet pipe 420 is connected to the first flow channel 414. The valve core 412 is located at the junction of the first channel 413 and the first flow channel 414. The valve core 412 has a second channel 415 corresponding to the position of the first channel 413 and a second flow channel 416 corresponding to the position of the first flow channel 414.

[0044] In this embodiment, when the second channel 415 is directly opposite the first channel 413 and the second flow channel 416 is directly opposite the first flow channel 414, when the air inlet pipe 420 is ventilated, the airflow enters the second flow channel 416 from the first flow channel 414, is divided into two ends of the second channel 415 within the valve core 412, and flows into the two ends of the first channel 413 respectively. Finally, it enters the first mixing chamber and the second mixing chamber from the first air distribution pipe 430 and the second air distribution pipe 440 respectively. This is a state of simultaneously supplying air to the first mixing chamber and the second mixing chamber. When only the first mixing chamber needs to be supplied with air, the valve core 412 is rotated so that the second flow channel 416 is directly opposite the first branch pipe. At this time, one end of the second channel 415 is directly opposite the first flow channel 414, while the other end is directly opposite the inner wall of the valve seat 411 and closed. The air inlet pipe 420 is open, and the airflow flows sequentially through the first flow channel 414, the second channel 415, the second flow channel 416, and the first channel 413 before entering the first branch pipe. When only the second mixing chamber needs to be supplied with air, the valve core 412 is rotated so that the first flow channel 414 is directly opposite the second branch pipe. In this configuration, one end of the second channel 415 is aligned with the second channel 416, while the other end is closed against the inner wall of the valve seat 411. The air inlet pipe 420 allows air to pass through, and the airflow sequentially flows through the first channel 414, the second channel 415, the second channel 416, and the first channel 413 before entering the second diverter pipe. In practical applications, the adjusting valve core 412 can be rotated to change the communication area between the first channel 414 and the second channel 415, thereby changing the air intake and controlling the flame size. For example, rotating the adjusting valve core 412... When the connection area between the first flow channel 414 and the second channel 415 is reduced, the air intake can be reduced, thereby reducing the flame output. Conversely, rotating the adjusting valve core 412 increases the connection area between the first flow channel 414 and the second channel 415, thereby increasing the air intake and increasing the flame output. When it is necessary to shut down the entire burner 100, rotating the valve core 412 makes the second flow channel 416 face the inner wall of the valve seat 411 and the first flow channel 414 face the outer side of the valve core 412, preventing air from passing into the valve core 412 and thus achieving flame shutdown.

[0045] When the air inlet pipe 420 only supplies fuel gas, the burner 100 also needs to be equipped with a structure that allows air to enter. Specifically, a first ejector pipe 330 is formed on the outside of the burner 100 corresponding to the position of the first mixing chamber. The first gas distribution pipe 430 is connected to the end of the first ejector pipe 330 away from the burner 100. Naturally, a first air inlet for outside air is provided at the end of the first ejector pipe 330 away from the burner 100. A second ejector pipe 340 is formed on the outside of the burner 100 corresponding to the position of the second mixing chamber. The second gas distribution pipe 440 is connected to the end of the second ejector pipe 340 away from the burner 100. Similarly, a second air inlet for outside air is provided at the end of the second ejector pipe 340 away from the burner 100. When gas is input into the inlet pipe 420 and enters the first gas distribution pipe 430, the gas first enters the first ejector pipe 330 and mixes with the air entering through the first ejector pipe 330, and then is injected into the first mixing chamber for further mixing. This improves the mixing effect of gas and air. Similarly, when gas is input into the inlet pipe 420 and enters the second gas distribution pipe 440, the gas first enters the second ejector pipe 340 and mixes with the air entering through the second ejector pipe 340, and then is injected into the second mixing chamber for further mixing.

[0046] The burner 100 has a structure that divides the internal space; it can be a flat plate. To facilitate the intake of air into the burner 100 via the first ejector tube 330 and improve intake efficiency, such as... Figure 6 As shown, in this embodiment, a partition plate 350 is provided inside the burner 100. The partition plate 350 divides the interior of the burner 100 into a first mixing chamber and a second mixing chamber. The partition plate 350 forms a first arc-shaped portion and a second arc-shaped portion on both sides of the center of the burner 100. The opening directions of the first arc-shaped portion and the second arc-shaped portion are opposite. The gas outlet direction of the first ejector tube 330 is tangent to the side of the first arc-shaped portion away from the center of the burner 100, and the gas outlet direction of the second ejector tube 340 is tangent to the side of the second arc-shaped portion away from the center of the burner 100. When the first ejector tube 330 supplies mixed gas to the first mixing chamber and the second ejector tube 340 supplies mixed gas to the second mixing chamber, the gas outlet direction of the first ejector tube 330 is tangent to the side of the first arc-shaped portion away from the center of the burner 100, and the gas outlet direction of the second ejector tube 340 is tangent to the side of the second arc-shaped portion away from the center of the burner 100. The mixed gas can flow along the first arc-shaped portion and the second arc-shaped portion, which is conducive to the smooth entry of the mixed gas into the first mixing chamber and the second mixing chamber, and the formation of a rotating airflow in the first mixing chamber and the second mixing chamber, thereby enhancing the effect of further diffusion and mixing of the mixed gas in the first mixing chamber and the second mixing chamber.

[0047] To further improve the diffusion and mixing effect of the gas mixture in the first mixing chamber, in this embodiment, a first guide vane 360 ​​is provided in the first mixing chamber. One side of the first guide vane 360 ​​faces the first ejector tube 330, and the other side of the first guide vane 360 ​​extends to the middle of the first mixing chamber and is spirally arranged. A guide gap is formed between the first guide vane 360 ​​and the first arc-shaped portion. When the gas mixture enters the first mixing chamber, part of the gas mixture enters the guide gap and then flows to the position of the first mixing chamber near the second arc-shaped portion, while part of the gas mixture flows to the middle of the first mixing chamber under the guidance of the first guide vane 360. As the spiral first guide vane 360 ​​rotates and rises, it mixes further. When it flows upward out of the first guide vane 360 ​​and blows towards the inner top side of the first mixing chamber, the gas mixture is dispersed and flows to the surroundings. This facilitates further mixing of the gas mixture in the first mixing chamber and allows it to be uniformly and quickly guided to the multiple first flame outlets 310.

[0048] To further improve the diffusion and mixing effect of the gas mixture in the first mixing chamber, in this embodiment, a second guide vane 370 is provided in the second mixing chamber. One side of the second guide vane 370 faces the second ejector tube 340, and the other side of the second guide vane 370 extends to the middle of the second mixing chamber and is spirally arranged. A guide gap is formed between the second guide vane 370 and the second arc-shaped portion. When the gas mixture enters the second mixing chamber, part of the gas mixture enters the guide gap and then flows to the position of the second mixing chamber near the first arc-shaped portion, while part of the gas mixture flows to the middle of the second mixing chamber under the guidance of the second guide vane 370. As the spiral second guide vane 370 rotates and rises, it mixes further. When it flows upward out of the second guide vane 370 and blows towards the inner top side of the second mixing chamber, the gas mixture is dispersed and flows to the surrounding area. This facilitates further mixing of the gas mixture in the second mixing chamber and allows it to be uniformly and quickly guided to the multiple second flame outlets 320.

[0049] To improve the mixing effect of air and fuel gas within the first ejector tube 330, such as Figure 7 As shown, in this embodiment, a first mixing cylinder 331 is provided inside the first ejector tube 330. The first mixing cylinder 331 can generate a rotating airflow inside the first ejector tube 330. The rotating airflow can promote the premixing of air and combustion within the first ejector tube 330, thereby improving the fuel utilization rate and thermal efficiency at the final gas output.

[0050] There are several ways in which the first mixing cylinder 331 can form a rotating airflow inside the first ejector tube 330. For example, multiple spirally extending grooves can be provided directly on the inner wall of the first ejector tube 330. When the gas and air pass through the grooves, they will be guided to rotate and mix. In order to further improve the mixing efficiency of air and gas in the first ejector tube 330, in this embodiment, the first ejector tube 330 includes a first straight section 332 and a first narrowing section 333 that are connected to each other. A first connecting rib 334 is connected between the outer side of the first mixing cylinder 331 and the inner side of the first straight section 332. A first swirling gap is formed between the first mixing cylinder 331 and the first straight section 332. Multiple first guide grooves 335 are provided on the outer side of the first mixing cylinder 331. The multiple first guide grooves 335 extend spirally on the outer side of the first mixing cylinder 331. When air and fuel gas enter the first straight section 332, part of the mixture enters the first mixing cylinder 331, and part of the mixture enters the first swirling gap formed between the outer side of the first mixing cylinder 331 and the inner side of the first straight section 332. This part of the mixture, guided by multiple first guide grooves 335, forms an airflow that rotates around the outer side of the first mixing cylinder 331. By using the first mixing cylinder 331 to spatially separate the mixture, a laminar flow with a stronger velocity can be formed on the outer side of the first mixing cylinder 331, which enhances the disturbance and mixing of the airflow located at the outer position. When flowing out of the first swirling gap, it can also drive the mixture from the first mixing cylinder 331 to rotate and mix. When reaching the first narrowing section 333, the swirling mixture can be further compressed into the axis of the first narrowing section 333, which enhances the disturbance and mixing of the mixture in the middle position. Finally, it flows out from the first narrowing section 333, which can form a higher speed and a better mixing effect airflow.

[0051] To improve the mixing effect of air and fuel gas within the second ejector tube 340, in this embodiment, a second mixing cylinder is provided inside the second ejector tube 340. The second mixing cylinder enables the formation of a rotating airflow within the second ejector tube 340. The rotating airflow can promote the premixing of air and combustion within the second ejector tube 340, thereby improving the fuel gas utilization rate and thermal efficiency at the final exhaust gas.

[0052] Similarly, there are multiple ways to create a rotating airflow inside the second ejector tube 340 using the second mixing cylinder. For example, multiple spirally extending grooves can be provided directly on the inner wall of the second ejector tube 340. When the gas and air pass through the grooves, they will be guided to rotate and mix. In order to further improve the efficiency of mixing air and gas inside the second ejector tube 340, in this embodiment, the second ejector tube 340 includes a second straight section and a second narrowing section that are connected to each other. A second connecting rib is connected between the outer side of the second mixing cylinder and the inner side of the second straight section. A second swirling gap is formed between the second mixing cylinder and the second straight section. Multiple second guide grooves are provided on the outer side of the second mixing cylinder, and the multiple second guide grooves extend spirally on the outer side of the second mixing cylinder. When air and fuel gas enter the second straight section, part of the mixture enters the second mixing cylinder, while the rest enters the second swirling gap formed by the outer side of the second mixing cylinder and the inner side of the second straight section. This part of the mixture, guided by multiple second guide channels, forms an airflow that rotates around the outer side of the second mixing cylinder. By using the second mixing cylinder to spatially separate the mixture, a laminar flow with a stronger velocity can be formed on the outer side of the second mixing cylinder, enhancing the disturbance and mixing of the airflow located at the outer position. When flowing out of the second swirling gap, it can also drive the mixture from the second mixing cylinder to rotate and mix. When reaching the second narrowing section, the swirling mixture can be further compressed into the axis of the second narrowing section, enhancing the disturbance and mixing of the mixture in the middle position. Finally, it flows out from the second narrowing section, forming a higher speed and better mixing airflow.

[0053] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A combustion furnace, characterized in that: include: A burner (100) is internally divided into a first mixing chamber and a second mixing chamber. A first flame outlet (310) communicating with the first mixing chamber is provided on the top side of the burner (100). Multiple first flame outlets (310) are arranged around the center of the burner (100). A second flame outlet (320) communicating with the second mixing chamber is provided on the top side of the burner (100). Multiple second flame outlets (320) are arranged around the center of the burner (100). A first ejector tube (330) is formed on the outer side of the burner (100) corresponding to the position of the first mixing chamber. A second ejector tube (340) is formed on the outer side of the burner (100) corresponding to the position of the second mixing chamber. A partition plate (350) is provided inside the burner (100). The partition plate (350) divides... The burner (100) is internally divided into a first mixing chamber and a second mixing chamber. The partition plate (350) is located on both sides of the center of the burner (100) and forms a first arc-shaped part and a second arc-shaped part respectively. The opening of the first arc-shaped part and the opening of the second arc-shaped part are opposite in direction. The gas outlet direction of the first ejector tube (330) is tangent to the side of the first arc-shaped part away from the center of the burner (100). The gas outlet direction of the second ejector tube (340) is tangent to the side of the second arc-shaped part away from the center of the burner (100). A first guide vane (360) is provided in the first mixing chamber. One side of the first guide vane (360) is directly opposite the first ejector tube (330). The other side of the first guide vane (360) extends to the middle of the first mixing chamber and is spirally arranged. The gas distribution assembly can supply gas to the first mixing chamber and / or the second mixing chamber; The support unit includes a lifting drive (210) and a bracket (220). The lifting drive (210) drives and connects to the bracket (220). The lifting drive (210) can drive the bracket (220) to move up and down. Multiple support units are arranged around the burner (100).

2. The combustion furnace according to claim 1, characterized in that: The burner (100) is connected to an air inlet pipe (110), and a flow controller (120) is provided on the air inlet pipe (110). The flow controller (120) is used to adjust the air flow of the air inlet pipe (110). A plurality of lifting drive components (210) are configured to drive the bracket (220) to move up and down according to the air flow of the air inlet pipe (110). When the air flow of the air inlet pipe (110) decreases, the lifting drive component (210) moves downward; when the air flow of the air inlet pipe (110) increases, the lifting drive component (210) moves upward.

3. A combustion furnace according to claim 2, characterized in that: The flow controller (120) is a rotary regulating valve with a rotatable knob. An adjusting protrusion (121) is connected to the outside of the knob. Multiple limit switches (130) are arranged on the rotation path of the adjusting protrusion (121). Each limit switch (130) is electrically connected to multiple lifting drive components (210). The adjusting protrusion (121) can be rotated to turn on any one of the limit switches (130).

4. A combustion furnace according to claim 1, characterized in that: A height detector (140) is provided on the top side of the burner (100). The height detector (140) is used to detect the heating distance between the heating surface of the burner (100) that needs to be heated and the burner (100). The lifting drive (210) can drive the bracket (220) to move upward according to the heating distance.

5. A combustion furnace according to claim 1, characterized in that: There are four support units.

6. A combustion furnace according to claim 1, characterized in that: The top surface of the bracket (220) is inclined downward in the direction close to the burner (100), and the top surface of the bracket (220) is provided with a plurality of first retaining teeth (221) in the direction close to the burner (100).

7. A combustion furnace according to claim 1, characterized in that: The bracket (220) is rotatably connected to a support member (230) near the top corner of the burner (100). The support member (230) can be rotated to the top side of the bracket (220) or rotated to tilt downward toward the burner (100).

8. A combustion furnace according to claim 7, characterized in that: The bracket (220) has an upwardly protruding limiting part (232) on the side away from the burner (100).

9. A combustion furnace according to claim 8, characterized in that: The limiting part (232) is provided with a limiting concave angle (233) near the top corner of the burner (100).

10. A combustion furnace according to claim 7, characterized in that: The top surface of the support member (230) is provided with a plurality of second retaining teeth (231) in the direction close to the burner (100).

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