Premixed gas burner and aluminum melting furnace

Abstract

The invention relates to the field of aluminum melting furnaces, and discloses a premixed gas burner which comprises a furnace body, a switching assembly and two burning assemblies arranged on the two sides of the furnace body correspondingly, each burning assembly comprises a turbine, a first fixing pipe is arranged at the gas outlet end of each turbine, and a second fixing pipe is coaxially arranged at the tail end of each first fixing pipe; a third fixing pipe is coaxially arranged at the tail end of the second fixing pipe, a fourth fixing pipe is arranged at the tail end of the third fixing pipe, the tail end of the fourth fixing pipe extends into the furnace body and is provided with a flame nozzle in a hinged mode, a spiral blade is arranged in the first fixing pipe, the tail end of an impeller shaft of the turbine extends into the second fixing pipe and is provided with turbine blades, and the impeller shaft is sleeved with a taper pipe. An annular main pipe is arranged outside the second fixing pipe, a gas connecting nozzle is arranged on the outer surface of the annular main pipe, a gas valve is arranged on the gas connecting nozzle, a plurality of radial branch pipes are distributed on the outer surface of the annular main pipe in an array mode, and the tail ends of the radial branch pipes extend into the second fixing pipe and are connected with the taper pipe.

Description

Technical Field

[0001] The present invention relates to the field of metal smelting, specifically to the field of aluminum melting furnaces, and particularly to a premixed gas burner and an aluminum melting furnace. Background Art

[0002] In the aluminum melting industry, aluminum melting furnaces are used, including crucible type and non-crucible type. The crucible type means heating from the side and bottom of the aluminum melting furnace, and the non-crucible type means directly heating the aluminum furnace charge inside the aluminum melting furnace with high-temperature flames.

[0003] The double regenerative high-temperature air combustion technology is the heating technology used in existing non-crucible aluminum melting furnaces. Specifically, when fuel burns, combustion-supporting air enters from port A, and high-temperature flue gas exits from port B and the heat is accumulated in the regenerator in regenerator chamber B. After a preset time, the combustion-supporting air enters from port B after heat exchange in regenerator chamber B, and the high-temperature waste gas exits through port A and the heat is accumulated in the regenerator in regenerator chamber A. This process is repeated to recover the heat in the high-temperature waste gas and achieve the purpose of waste heat recovery and energy conservation. However, there are some deficiencies in this method: a. It recovers and accumulates the heat contained in the high-temperature flue gas through the regenerator, and uses the heat of the regenerator to preheat the combustion-supporting air, thereby improving the combustion sufficiency of the fuel and achieving the effect of waste heat utilization and the purpose of energy conservation. However, when the fuel burns, the combustion-supporting air is simply mixed into the fuel gas, and there is an easy problem of uneven mixing between the two, which affects the subsequent combustion quality; b. As is well known, when a flame burns, the flame tip is the area where the combustion reaction is most intense and the temperature is the highest. The flame root is mainly the area of fuel preheating and decomposition, providing continuous combustible gas for combustion, and the temperature is relatively lower. Therefore, when the flame burns, the temperature on the flame tip side is higher than that on the flame root side. Also, in the prior art, the position of the burner is fixed, so the trajectory of the ignited flame is predictable and approximately stationary. Therefore, the heat received by the aluminum material is not balanced, which not only affects the melting efficiency but also causes some aluminum materials to be overheated by the flame and generate high-temperature oxidation problems.

[0004] Based on the above, the present invention proposes a premixed gas burner and an aluminum melting furnace. Summary of the Invention

[0005] To solve the problems mentioned in the above background, the present invention provides a premixed gas burner and an aluminum melting furnace.

[0006] To achieve the above technical objectives, the technical solutions adopted by the present invention are as follows.

[0007] A premixed gas burner includes a furnace body, a switching component, and two combustion components respectively arranged on both sides of the furnace body. The combustion component includes a turbine. A horizontally arranged gas flow pipeline is provided at the air outlet end of the turbine. The gas flow pipeline includes a fixed pipe one arranged at the air outlet end of the turbine. A fixed pipe two is coaxially arranged at the end of the fixed pipe one. A fixed pipe three is coaxially arranged at the end of the fixed pipe two. A fixed pipe four is arranged at the end of the fixed pipe three. The end of the fixed pipe four extends into the furnace body and is hingedly provided with a flame nozzle.

[0008] A spiral blade is arranged in the fixed pipe one. The end of the impeller shaft of the turbine extends into the fixed pipe two and is provided with turbine blades. A tapered pipe is sleeved outside the impeller shaft. An annular main pipe is arranged outside the fixed pipe two. A gas connection nozzle is arranged on the outer surface of the annular main pipe and a gas valve is arranged on the gas connection nozzle. A number of radial branch pipes are arrayed on the outer surface of the annular main pipe. The ends of the radial branch pipes extend into the fixed pipe two and are connected with the tapered pipe. The end with a larger diameter of the tapered pipe faces the turbine blades.

[0009] Further, the combustion component includes a regenerator and a three-way pipe. A regenerator body is arranged in the regenerator. An upper pipeline is arranged on the upper surface of the regenerator.

[0010] The three-way pipe includes three interfaces. One interface is connected with the bottom of the regenerator through a lower pipeline. One interface is connected with the furnace body chamber through a high-temperature flue gas pipe. A check valve two is arranged at one interface. A control valve is arranged at the end of the check valve two. The end of the control valve is connected with the air inlet end of the turbine. A check valve one is arranged at the connection of the high-temperature flue gas pipe and the three-way pipe.

[0011] The check valve one is used to make the gas in the high-temperature flue gas pipe flow into the three-way pipe unidirectionally. The check valve two is used to make the gas in the three-way pipe flow into the control valve unidirectionally.

[0012] Further, a sensor for real-time monitoring of the gas concentration of the premixed gas is arranged in the fixed pipe three. An ignition needle is arranged in the flame nozzle.

[0013] Further, the combustion component further includes a driving component for driving the flame nozzle to reciprocally swing around the hinge axis.

[0014] Further, lugs are arranged on the outer circumferential surface of the flame nozzle.

[0015] The driving component includes a push-pull rod. The push-pull rod can only move along the axial line direction of the gas flow pipeline. A linkage rod is hingedly arranged between the end of the push-pull rod extending into the furnace body and the lug. When the push-pull rod moves, the flame nozzle can be pulled to swing around the hinge axis through the linkage rod.

[0016] The driving component further includes a driving unit for driving the push-pull rod to move.

[0017] Further, the driving unit includes a linear module, the linear module includes an electric telescopic rod, and the output end of the electric telescopic rod is connected to the push rod.

[0018] Further, the driving unit includes a rotating shaft. Both ends of the impeller shaft of the turbine extend out of the casing. The impeller shaft is in power connection with the input end of the rotating shaft. A turntable is coaxially arranged at the output end of the rotating shaft. A convex pin is eccentrically arranged on the end face of the turntable. A vertically arranged linkage hole is arranged on the push rod. The linkage hole and the convex pin form a sliding guiding fit.

[0019] Further, the flame nozzle and the fixed pipe four are connected through a rotary joint.

[0020] Further, the switching component includes a reversing valve. The reversing valve includes four connecting nozzles arranged in a circumferential array. A blower is arranged at one connecting nozzle, an induced draft fan is arranged at one connecting nozzle, a first connecting pipe is arranged at one connecting nozzle, and a second connecting pipe is arranged at one connecting nozzle. The connecting nozzle provided with the induced draft fan and the connecting nozzle provided with the blower are on the same straight line. An intake pipe is arranged at the intake end of the blower, and a discharge pipe is arranged at the outlet end of the induced draft fan;

[0021] The reversing valve includes a state one and a state two. When the reversing valve is in state one, the blower is connected to the first connecting pipe, and at the same time the induced draft fan is connected to the second connecting pipe. When the reversing valve is in state two, the blower is connected to the second connecting pipe, and at the same time the induced draft fan is connected to the first connecting pipe;

[0022] The upper pipes in the two combustion components are respectively connected to the first connecting pipe and the second connecting pipe.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] One of the cores of this solution is the improvement of the combustion component. For the convenience of description, taking Figure 3 the perspective as an example, the effects when the left combustion component is in use are specifically described:

[0025] The reciprocating swinging motion of the flame nozzle can make the flame heat the upper surface of the aluminum material in the furnace more evenly, improving the smelting effect and efficiency. The reciprocating swinging motion is specifically manifested as follows: the flame nozzle first swings to the upper right side and then to the lower left side. The former will cause the distance between the flame nozzle and the aluminum material to gradually increase, and the latter will cause the distance between the flame nozzle and the aluminum material to gradually decrease. Therefore, in order to make the flame burn the aluminum material and improve the smelting effect and efficiency, it is necessary to correspondingly increase or decrease the length of the flame according to the distance between the flame nozzle and the aluminum material, that is, correspondingly increase or decrease the supply amounts of the fuel gas and the combustion-supporting air. Also, since the increase or decrease of the flame will cause the firepower to correspondingly increase or decrease, in order to achieve the even heating of the aluminum material, when the firepower becomes larger, the flame nozzle needs to swing at an accelerated speed, and when the firepower becomes smaller, the flame nozzle needs to swing at a decelerated speed;

[0026] On the contrary, in the second implementation mode of the driving unit in this solution, the reciprocating swinging motion of the flame nozzle is realized through the rotation of the impeller shaft. Therefore, if the supply amounts of the combustion-supporting air and the fuel gas become larger, then the rotation speed of the impeller shaft increases, which will cause the swinging speed of the flame nozzle to increase, and when the rotation speed of the impeller shaft becomes smaller, the swinging speed of the flame nozzle will become smaller. Therefore, the effect of the even heating of the aluminum material mentioned above can be achieved;

[0027] In addition, in this solution, the pre-mixing of the combustion-supporting air and the fuel gas is also realized through the rotation of the impeller shaft. Therefore, if the supply amounts of the combustion-supporting air and the fuel gas become larger, then the rotation speed of the impeller shaft increases, which will strengthen the mixing effect, so as to achieve the effect that even if the supply amounts of the combustion-supporting air and the fuel gas become larger, the pre-mixing effect will not be affected. Brief Description of the Drawings

[0028] Figure 1 is the front view of the present invention;

[0029] Figure 2 is the rear view of the present invention;

[0030] Figure 3 is the structural view of the present invention;

[0031] Figure 4 is the structural view of the switching component;

[0032] Figure 5 is the schematic view of the reversing valve;

[0033] Figure 6 is the structural view of the combustion component;

[0034] Figure 7 is the partial view of the combustion component;

[0035] Figure 8 is the partial sectional view of the combustion component;

[0036] Figure 9 Schematic diagram of the driving component;

[0037] Figure 10 Schematic of the drive unit of the second embodiment Figure One ;

[0038] Figure 11 Schematic of the drive unit of the second embodiment Figure Two .

[0039] The reference numerals in the drawings are:

[0040] 100, furnace body; 101, inlet; 102, cover; 103, output valve; 104, high-temperature flue pipe; 200, switching component; 201, reversing valve; 202, blower; 203, induced draft fan; 204, first connecting pipe; 205, second connecting pipe; 206, intake pipe; 207, discharge pipe; 300, combustion component; 301, regenerator; 302, upper pipe; 303, lower pipe; 304, three-way pipe; 305, check valve one; 306, check valve two; 307, control valve; 308, turbine; 3081, impeller shaft; 3082, turbine blade; 309, fixed pipe one; 3091, spiral blade; 310, fixed pipe two; 311, annular main pipe; 3111, radial branch pipe; 3112, tapered pipe; 3113, gas valve; 312, fixed pipe three; 3121, sensor; 313, fixed pipe four; 314, flame nozzle; 3141, lug; 315, driving component; 3151, linkage rod; 3152, push-pull rod; 3153, linear module; 3154, linkage hole; 3155, rotating shaft; 3156, turntable; 3157, convex pin. Detailed implementation manners

[0041] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and effects of the present invention as follows.

[0042] Referring to Figures 1 - 3 , an aluminum melting furnace includes a furnace body 100, an inlet 101 is provided on the side of the furnace body 100, a cover 102 is arranged in a matching manner at the inlet 101. After opening the cover 102, aluminum materials are put into the furnace body 100 through the inlet 101. After the input is completed, the cover 102 is closed. An outlet is also provided on the side of the furnace body 100, and an output valve 103 is arranged in a matching manner at the outlet. After the aluminum materials are melted, the output valve 103 is opened, and the molten aluminum is output outwards through the outlet.

[0043] Referring to Figures 1 - 3, a premixed gas burner, comprising a switching component 200 and two combustion components 300 respectively arranged on both sides of the furnace body 100. The switching component 200 is used to guide the combustion-supporting air into the combustion component 300 and at the same time guide the flue gas generated by combustion to be discharged outward.

[0044] Refer to Figure 4 With Figure 5 , the switching component 200 includes a reversing valve 201. The reversing valve 201 includes four connecting nozzles arranged in an array along the circumferential direction. Among the four connecting nozzles, a blower 202 is arranged at one connecting nozzle, an induced draft fan 203 is arranged at one connecting nozzle, a first connecting pipe 204 is arranged at one connecting nozzle, and a second connecting pipe 205 is arranged at one connecting nozzle. The connecting nozzle provided with the induced draft fan 203 and the connecting nozzle provided with the blower 202 are located on the same straight line.

[0045] An intake pipe 206 is arranged at the intake end of the blower 202, and a discharge pipe 207 is arranged at the outlet end of the induced draft fan 203.

[0046] The reversing valve 201 includes state one and state two. When in state one, the blower 202 is communicated with the first connecting pipe 204, and at the same time the induced draft fan 203 is communicated with the second connecting pipe 205. When in state two, on the contrary, the blower 202 is communicated with the second connecting pipe 205, and at the same time the induced draft fan 203 is communicated with the first connecting pipe 204; the reversing valve 201 is a prior art and can be realized without further description.

[0047] Refer to Figures 6 - 11 , one of the cores of this solution lies in the combustion component 300.

[0048] The combustion component 300 includes a regenerator 301. A regenerator is arranged inside the regenerator 301. An upper pipe 302 is arranged on the upper surface of the regenerator 301, and a lower pipe 303 is arranged at the bottom of the regenerator 301. The upper pipes 302 in the two combustion components 300 are respectively connected to the first connecting pipe 204 and the second connecting pipe 205.

[0049] The combustion component 300 further includes a tee 304. The tee 304 is a prior art and includes three interfaces. Among the three interfaces, one interface is connected to the lower pipe 303, one interface is connected to the chamber of the furnace body 100 through a high-temperature flue pipe 104, a check valve two 306 is arranged at one interface, a control valve 307 is arranged at the end of the check valve two 306, a turbine 308 is arranged at the end of the control valve 307. In addition, a check valve one 305 is arranged at the connection between the high-temperature flue pipe 104 and the tee 304.

[0050] The one-way valve 305 is used to allow the gas in the high-temperature flue pipe 104 to flow into the tee pipe 304 unidirectionally. The two-way valve 306 is used to allow the gas in the tee pipe 304 to flow into the control valve 307 unidirectionally. The one-way valve is an existing technology and can be achieved, so it will not be elaborated.

[0051] At the opening of the casing of the turbine 308, there is a horizontally arranged gas flow pipeline. Further, the gas flow pipeline includes a first fixed pipe 309 arranged at the opening of the casing. At the end of the first fixed pipe 309, a second fixed pipe 310 is coaxially arranged. At the end of the second fixed pipe 310, a third fixed pipe 312 is coaxially arranged. At the end of the third fixed pipe 312, a fourth fixed pipe 313 is arranged. The end of the fourth fixed pipe 313 extends into the furnace body 100 and is hingedly provided with a flame nozzle 314. The connection between the flame nozzle 314 and the fourth fixed pipe 313 can be achieved by using a rotary joint technology and will not be elaborated.

[0052] A spiral blade 3091 is arranged in the first fixed pipe 309. The end of the impeller shaft 3081 of the turbine 308 extends into the second fixed pipe 310 and is provided with a turbine blade 3082. An adapter cone 3112 is sleeved outside the impeller shaft 3081, and the adapter cone 3112 is located in the second fixed pipe 310.

[0053] An annular main pipe 311 is provided outside the fixed pipe two 310. A gas nozzle is provided on the outer surface of the annular main pipe 311, and a gas valve 3113 is provided on the gas nozzle. When the gas valve 3113 is opened, gas can enter the annular main pipe 311. A number of radial branch pipes 3111 are also arranged in an array on the outer surface of the annular main pipe 311. The end of the radial branch pipe 3111 extends into the fixed pipe two 310 and is connected to the tapered pipe 3112. The end with a larger diameter of the tapered pipe 3112 faces the turbine blade 3082. Therefore, the gas finally enters the fixed pipe two 310 through the tapered pipe 3112. At the same time, since the impeller shaft 3081 drives the turbine blade 3082 to rotate, under the traction of the turbine blade 3082, the gas enters the fixed pipe two 310 in a spiral vortex manner. When the combustion-supporting air passes through the turbine 308, it will cause the impeller shaft 3081 to rotate. At the same time, under the guidance of the spiral blade 3091, the combustion-supporting air also enters the fixed pipe two 310 in a spiral vortex manner. After that, the combustion-supporting air and the gas will collide. Preferably, the spiral vortex directions of the two are opposite, so as to improve the collision effect and thus improve the pre-mixing effect of the two. In addition, since the impeller shaft 3081 is driven to rotate by the flow of the combustion-supporting air, it drives the turbine blade 3082 to rotate together. That is, if it is necessary to increase the firepower, then the amounts of the combustion-supporting air and the gas need to increase synchronously in proportion, and then the rotation speed of the impeller shaft 3081 will also increase, and the pre-mixing effect will also increase. That is: as the amounts of the combustion-supporting air and the gas increase, the mixing effect also increases adaptively, so the problem of insufficient mixing will not occur. On the contrary, the common stirring action in the prior art cannot achieve the adaptive increasing effect. Once the amounts of the combustion-supporting air and the gas increase, the mixing time is shortened and the mixing effect will become worse, but this problem does not exist in this solution.

[0054] A sensor 3121 is arranged in the fixed pipe three 312 for real-time monitoring of the gas concentration of the pre-mixed gas. The significance is that insufficient combustion-supporting air will lead to incomplete combustion, and excessive combustion-supporting air will dilute the gas and affect combustion. Therefore, through the real-time monitoring of the sensor 3121, once a problem occurs, a fault alarm signal will be sent out in time.

[0055] An ignition needle is arranged in the flame nozzle 314 for igniting the mixed gas, the gas flame.

[0056] The combustion assembly 300 further includes a driving component 315 for driving the flame nozzle 314 to reciprocally swing around the hinge axis.

[0057] Refer to Figure 8 , a lug 3141 is arranged on the outer circumferential surface of the flame nozzle 314.

[0058] Refer to Figure 7 And Figure 9, the driving component 315 includes a push-pull rod 3152, and the push-pull rod 3152 can only move along the axis of the gas flow pipeline. Further, a guiding bracket can be arranged on the outer surface of the gas flow pipeline, and a sliding connection along the axis of the gas flow pipeline is formed between the guiding bracket and the push-pull rod 3152.

[0059] A linkage rod 3151 is hingedly arranged between the end of the push-pull rod 3152 extending into the furnace body 100 and the lug 3141. When the push-pull rod 3152 moves backward or forward, the flame nozzle 314 can be pulled by the linkage rod 3151 to swing or reverse swing around the hinge axis.

[0060] The driving component 315 further includes a driving unit for driving the push-pull rod 3152 to move. There are various implementation manners of the driving unit. For example:

[0061] First, referring to Figure 9 , the driving unit includes a linear module 3153, and the linear module 3153 uses existing electric telescopic rod technology or existing screw linear motion technology, etc. to drive the push-pull rod 3152 to perform reciprocating motion.

[0062] Second, referring to Figure 10 and Figure 11 , the driving unit includes a rotating shaft 3155. Both ends of the impeller shaft 3081 of the turbine 308 extend out of the casing. One end is provided with a turbine blade 3082, and the other end is in power connection with the input end of the rotating shaft 3155. The power connection manner adopts the existing power transmission route and will not be elaborated here.

[0063] A turntable 3156 is coaxially arranged at the output end of the rotating shaft 3155. A convex pin 3157 is eccentrically arranged on the end face of the turntable 3156. A linkage hole 3154 arranged vertically is provided on the push-pull rod 3152, and the linkage hole 3154 and the convex pin 3157 form a sliding guiding fit.

[0064] The impeller shaft 3081 drives the rotating shaft 3155 and the turntable 3156 to rotate. When the turntable 3156 rotates, the push-pull rod 3152 is pulled to perform reciprocating motion through the cooperation of the linkage hole 3154 and the convex pin 3157. Further, the second driving method is preferably adopted, and the advantages will be elaborated in detail later.

[0065] The working principle of the present invention:

[0066] The double regenerative high-temperature air combustion technology is adopted in this solution. Therefore, the switching of the two combustion components 300 realizes the waste heat utilization of high-temperature flue gas, which is the same as the existing technology and will not be elaborated here. One of the cores of this solution is the improvement of the combustion component 300. Specifically:

[0067] When the combustion-supporting air passes through the turbine 308, it causes the impeller shaft 3081 to rotate, and the impeller shaft 3081 drives the turbine blades 3082 to rotate;

[0068] The fuel gas enters the second fixed pipe 310 through the annular main pipe 311, the radial branch pipe 3111, and the tapered pipe 3112. At the same time, since the turbine blades 3082 rotate and the turbine blades 3082 are close to the tapered pipe 3112, the fuel gas enters the second fixed pipe 310 in a spiral vortex manner. Meanwhile, the combustion-supporting air is guided by the spiral blades 3091 and also enters the second fixed pipe 310 in a spiral vortex manner. Therefore, the combustion-supporting air and the fuel gas will collide. Preferably, since the spiral vortex directions of the two are opposite, the collision effect can be further improved, thereby improving the premixing effect of the two;

[0069] At the same time, the impeller shaft 3081 will drive the rotating shaft 3155 and the turntable 3156 to rotate. When the turntable 3156 rotates, through the cooperation of the linkage hole 3154 and the protruding pin 3157, the push-pull rod 3152 is pulled to move reciprocally, so that the flame nozzle 314 swings reciprocally around the hinge shaft.

[0070] As can be seen from the above description:

[0071] For the sake of convenience of description, taking Figure 3 the perspective as an example, the effects when the left combustion assembly is in use will be specifically described:

[0072] The reciprocating swinging action of the flame nozzle can make the flame heat the upper surface of the aluminum material in the furnace body more evenly, improving the melting effect and efficiency. The reciprocating swinging action is specifically manifested as: the flame nozzle first swings to the upper right side and then to the lower left side. The former will cause the distance between the flame nozzle and the aluminum material to gradually increase, and the latter will cause the distance between the flame nozzle and the aluminum material to gradually decrease. Therefore, in order to make the flame of the fire burn the aluminum material and improve the melting effect and efficiency, it is necessary to correspondingly increase or decrease the length of the flame according to the distance between the flame nozzle and the aluminum material, that is, correspondingly increase or decrease the supply amounts of the fuel gas and the combustion-supporting air. Also, since the increase or decrease of the flame will cause the firepower to correspondingly increase or decrease, in order to achieve the uniform heating of the aluminum material, when the firepower becomes larger, the flame nozzle needs to swing faster, and when the firepower becomes smaller, the flame nozzle needs to swing slower;

[0073] On the contrary, in the second implementation manner of the driving unit in this solution, the reciprocating swinging action of the flame nozzle is realized through the rotation action of the impeller shaft. Therefore, if the supply amounts of the combustion-supporting air and the fuel gas become larger, the rotation speed of the impeller shaft increases, which will cause the swinging speed of the flame nozzle to increase. When the rotation speed of the impeller shaft becomes smaller, the swinging speed of the flame nozzle will become smaller. Therefore, the effect of the uniform heating of the aluminum material mentioned above can be achieved;

[0074] In addition, in this solution, the pre-mixing of combustion-supporting air and gas is also achieved through the rotation of the impeller shaft. Therefore, when the supply amounts of combustion-supporting air and gas increase, the rotation speed of the impeller shaft increases, which will strengthen the mixing effect, so that even if the supply amounts of combustion-supporting air and gas increase, the pre-mixing effect will not be affected.

[0075] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A premixed gas burner, comprising a furnace body (100), a switching assembly (200), and two combustion assemblies (300) respectively arranged on both sides of the furnace body (100), characterized in that: The combustion assembly (300) comprises a turbine (308), a gas flow pipeline arranged horizontally is arranged at the gas outlet end of the turbine (308), the gas flow pipeline comprises a fixed pipe 1 (309) arranged at the gas outlet end of the turbine (308), a fixed pipe 2 (310) is coaxially arranged at the end of the fixed pipe 1 (309), a fixed pipe 3 (312) is coaxially arranged at the end of the fixed pipe 2 (310), a fixed pipe 4 (313) is arranged at the end of the fixed pipe 3 (312), and the end of the fixed pipe 4 (313) extends into the furnace body (100) and is hingedly provided with a flame nozzle (314); A spiral blade (3091) is arranged in the fixed pipe (309), the end of the impeller shaft (3081) of the turbine (308) extends into the fixed pipe (310) and is provided with a turbine blade (3082), the outer portion of the impeller shaft (3081) is sleeved with a conical tube (3112), the outer portion of the fixed pipe (310) is provided with an annular main pipe (311), the outer surface of the annular main pipe (311) is provided with a gas nozzle and a gas valve (3113) is arranged on the gas nozzle, a plurality of radial branch pipes (3111) are arranged in an array on the outer surface of the annular main pipe (311), the ends of the radial branch pipes (3111) extend into the fixed pipe (310) and are connected to the conical tube (3112), and the end of the conical tube (3112) with a larger diameter faces the turbine blade (3082).

2. A premixed gas burner according to claim 1, characterized in that: The combustion assembly (300) comprises a heat storage chamber (301) and a three-way pipe (304); a heat storage body is arranged in the heat storage chamber (301); and an upper pipe (302) is arranged on the upper surface of the heat storage chamber (301); The three-way pipe (304) includes three interfaces, one interface is connected to the bottom of the heat storage chamber (301) through the lower pipe (303), one interface is connected to the chamber of the furnace body (100) through the high-temperature smoke pipe (104), one interface is provided with a second check valve (306), the end of the second check valve (306) is provided with a control valve (307), the end of the control valve (307) is connected to the air intake end of the turbine (308), and a first check valve (305) is provided at the connection between the high-temperature smoke pipe (104) and the three-way pipe (304); One-way valve 1 (305) is used to allow the gas in the high-temperature smoke pipe (104) to flow into the three-way pipe (304) in one direction, and one-way valve 2 (306) is used to allow the gas in the three-way pipe (304) to flow into the control valve (307) in one direction.

3. A premixed gas burner according to claim 1, characterized in that: A sensor (3121) for real-time monitoring of the fuel gas concentration of the premixed gas is arranged in the fixed pipe (312), and an ignition needle is arranged in the flame spray head (314).

4. A premixed gas burner according to claim 1 or 2, characterized in that: The combustion assembly (300) further comprises a driving component (315) for driving the flame spray head (314) to reciprocate and swing around the hinge axis.

5. A premixed gas burner according to claim 4, characterized in that: The outer circumferential surface of the flame spray head (314) is provided with a lug (3141); The driving component (315) includes a push-pull rod (3152), which can only move along the axis of the gas circulation pipeline. A connecting rod (3151) is hingedly arranged between the end of the push-pull rod (3152) extending into the furnace body (100) and the lug (3141). When the push-pull rod (3152) moves, the flame spray head (314) can be pulled to swing around the hinge axis through the connecting rod (3151); The driving component (315) further includes a driving unit for driving the push-pull rod (3152) to move.

6. A premixed gas burner according to claim 5, characterized in that: The driving unit comprises a linear module (3153), the linear module (3153) comprises an electric telescopic rod, and the output end of the electric telescopic rod is connected to the push-pull rod (3152).

7. A premixed gas burner according to claim 5, characterized in that: The driving unit comprises a rotating shaft (3155), both ends of the impeller shaft (3081) of the turbine (308) extend out of the casing, the impeller shaft (3081) and the input end of the rotating shaft (3155) form a power connection, a rotating disk (3156) is coaxially arranged at the output end of the rotating shaft (3155), a convex pin (3157) is eccentrically arranged on the end face of the rotating disk (3156), and a vertically arranged connecting hole (3154) is provided on the push-pull rod (3152), and the connecting hole (3154) and the convex pin (3157) form a sliding guide fit.

8. A premixed gas burner according to claim 4, characterized in that: The flame spray head (314) and the fixed pipe four (313) are connected via a rotary joint.

9. A premixed gas burner according to claim 4, characterized in that: The switching assembly (200) comprises a reversing valve (201), the reversing valve (201) comprises four connecting nozzles arranged in an array along a circumferential direction, a blower (202) is arranged at one connecting nozzle, an induced draft fan (203) is arranged at one connecting nozzle, a first connecting pipe (204) is arranged at one connecting nozzle, a second connecting pipe (205) is arranged at one connecting nozzle, the connecting nozzle provided with the induced draft fan (203) and the connecting nozzle provided with the blower (202) are located on the same straight line, an air inlet end of the blower (202) is provided with an air inlet pipe (206), and an air outlet end of the induced draft fan (203) is provided with a discharge pipe (207); The reversing valve (201) includes a state one and a state two. When the reversing valve (201) is in the state one, the blower (202) is connected to the first connecting pipe (204), and the induced draft fan (203) is connected to the second connecting pipe (205). When the reversing valve (201) is in the state two, the blower (202) is connected to the second connecting pipe (205), and the induced draft fan (203) is connected to the first connecting pipe (204). The upper pipes (302) in the two combustion assemblies (300) are connected to the first connecting pipe (204) and the second connecting pipe (205) respectively.

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