Gas burner and updraft burner

Abstract

The application relates to the technical field of gas stoves, in particular to a gas burner and an updraft combustion burner. The gas burner comprises a circumferentially arranged outer ring structure, which comprises an inner ring wall and an outer ring wall, the outer ring structure forms an outer ring flow channel and a mixing cavity which are communicated with each other; an outer ring ejection pipe arranged below the outer ring flow channel, the outlet of the outer ring ejection pipe is communicated with the mixing cavity; and a shunt plate buckled in the outer ring structure, the shunt plate is provided with a first shunt area and a second shunt area, the first shunt area is arranged above the outer ring flow channel in correspondence, and the second shunt area is arranged above the mixing cavity in correspondence. The updraft combustion burner comprises the gas burner. The technical problem that the gas and air of the updraft combustion burner are not mixed sufficiently and the performance of the combustion burner is affected is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas stove, in particular to a gas burner and an updraft combustion device. BACKGROUND

[0002] At present, the domestic gas stove market is dominated by down-draft combustion devices. With the increasing demand of consumers for the comfort of gas stoves, especially the higher temperature requirement of the gas stove itself, up-draft gas stoves have appeared on the market. The up-draft combustion device technology is mainly concentrated in Europe and the United States, but the rated heat load of the up-draft combustion device in Europe and the United States is relatively low, which cannot meet the use demand of the domestic market for high heat load combustion devices. Therefore, it is urgent to develop an up-draft combustion device suitable for the domestic consumer market demand.

[0003] However, the current up-draft combustion device is still under continuous innovation, and the existing up-draft combustion device still has many deficiencies. For example, the Chinese utility model patent with the authorization number CN210153792U and the name "combustion device" innovatively designs the injection pipe of the up-draft combustion device to increase the length of the injection pipe while canceling the mixing chamber. However, in actual high-power use, the structure of canceling the mixing chamber leads to insufficient mixing of gas and air, which affects the combustion condition and the performance of the combustion device. Another Chinese utility model patent with the authorization number CN205191567U and the name "a completely up-draft combustion device" is provided with a mixing chamber at the rear end of the injection pipe. However, due to the shortness of the injection pipe and the insufficient mixing of the mixing chamber, the gas and air entering the mixing chamber are rapidly divided along the horizontal direction, which leads to insufficient mixing of the gas and air and poor combustion condition. In addition, due to the setting position of the existing injection pipe and mixing chamber, the existing up-draft combustion device has the problem of uneven flame, with longer flame on one side and shorter flame on the other side. SUMMARY

[0004] The present application aims to provide a gas burner and an up-draft combustion device to solve the technical problem of insufficient mixing of gas and air in the up-draft combustion device, which affects the performance of the combustion device.

[0005] In a first aspect, the present application provides a gas burner, which comprises:

[0006] an outer ring structure arranged circumferentially, which comprises an inner ring wall and an outer ring wall arranged in abutment at the bottom and in interval at the top, and forms an outer ring flow channel and a mixing chamber which are in communication with each other; and

[0007] an outer ring injection pipe arranged below the outer ring flow channel, with an outlet connected to the mixing chamber; and

[0008] A shunt plate is buckled in the outer ring structure, and the shunt plate is provided with a first shunt area and a second shunt area, the first shunt area is arranged above the outer ring flow channel, and the second shunt area is arranged above the mixing cavity.

[0009] Further, the shunt plate comprises an upper baffle, a lower baffle and a vertical wall connecting the upper baffle and the lower baffle, the upper baffle comprises a first upper baffle and a second upper baffle arranged in connection;

[0010] The first shunt area comprises the first upper baffle, and the first upper baffle is provided with at least one first gas outlet;

[0011] The second shunt area comprises the second upper baffle and the lower baffle, and at least two vertical walls arranged between the second upper baffle and the lower baffle and connecting the two, at least two adjacent vertical walls are arranged in a spaced manner to form at least one second gas outlet, and the second gas outlet is a vertical gas outlet opening to the side.

[0012] Further, the aperture of the first gas outlet is larger than the aperture of the second gas outlet; and / or

[0013] The upper baffle is horizontally arranged, and the first gas outlet is a horizontal gas outlet opening upward.

[0014] Further, the upper baffle is circumferentially arranged, and the top surface is lower than the top of the outer ring structure; and / or

[0015] The bottom surface of the lower baffle is higher than the highest point of the outlet of the outer ring ejection pipe.

[0016] Further, the mixing cavity is provided with a protruding blocking part protruding from the inner ring wall towards the outer ring wall, and the mixing cavity is divided to form at least two first backflow areas.

[0017] Further, the lower baffle is provided with a notch corresponding to the position of the protruding blocking part, and the size of the notch can accommodate the protruding blocking part to pass through.

[0018] Further, the second upper baffle is provided with a mounting through hole corresponding to the position of the notch, and the top of the protruding blocking part is provided with a fixing hole position corresponding to the mounting through hole; and / or

[0019] A plurality of first gas outlets are arranged in a spaced manner, at least one of the intervals is provided with a mounting through hole, and correspondingly, the inner ring wall is protruding and provided with a fixing hole position.

[0020] Further, a gap is left between the protruding end of the protruding blocking part and the outer ring wall; and / or

[0021] The top of the protruding barrier is lower than the top of the inner ring wall.

[0022] Further, the protruding barrier separates the mixing cavity into two first backflow zones, and one outer ring eductor pipe is arranged in each first backflow zone.

[0023] Further, the inlet and outlet of the outer ring eductor pipe are respectively located on opposite sides of the central axis of the outer ring structure.

[0024] Further, the outer ring wall of the mixing cavity comprises an outer ring lower peripheral wall and an outer ring upper peripheral wall, the outer ring lower peripheral wall is outwardly expanded, the outer ring upper peripheral wall is inwardly contracted, the circumferential edge of the outer ring upper peripheral wall is located above the mixing cavity, and the circumferential edge downwardly extends to be provided with a vertical peripheral wall, so that the mixing cavity forms a second backflow zone.

[0025] Further, the lateral end of the outer ring lower peripheral wall is connected with the side wall of the outer ring eductor pipe, and the side wall of the outer ring eductor pipe and the outer ring wall form a backflow inflection point.

[0026] In the second aspect, the application provides an upper air inlet burner, which comprises the gas stove head as described in any one of the preceding aspects, and further comprises an inner ring center structure arranged inside the inner ring wall, and further comprises an outer ring fire cover arranged on the outer ring structure and an inner ring fire cover arranged on the inner ring center structure.

[0027] Further, the upper air inlet burner further comprises a nozzle seat, which comprises a first gas supply channel, and the first gas supply channel comprises an outer ring main fire pipe, and the outer ring main fire pipe is provided with an outer ring main fire nozzle at the gas outlet end, and the outer ring main fire nozzle is arranged corresponding to the inlet of the outer ring eductor pipe.

[0028] Further, the center of the outer ring main fire nozzle is flush with the central axis of the outer ring eductor pipe.

[0029] Compared with the prior art, the gas stove head and the updraft combustion burner provided by the application have the following advantages: the mixed gas of gas and air in the outer ring ejector pipe flows out of the outlet thereof into the mixing chamber to be fully mixed, improving the combustion performance of the burner; part of the mixed gas in the mixing chamber flows upward until entering the outer ring fire cover capped above the outer ring structure to be combusted, and part of the mixed gas flows upward in a detour to the outer ring flow channel located above the outer ring ejector pipe and communicating with the mixing chamber, and then flows upward until entering the outer ring fire cover capped above the outer ring structure to be combusted. In this process, the mixed gas can be further fully mixed, but the gas flow rate and gas quantity in the mixing chamber are both greater than the gas flow rate and gas quantity in the outer ring flow channel, which easily leads to uneven flames in the two parts, i.e., the flame above the mixing chamber is longer and the flame above the outer ring flow channel is shorter. Based on this, the application further provides a flow dividing plate located above the outer ring flow channel and the mixing chamber, which plays a role of setting a certain resistance to the upward flowing mixed gas, so that the mixed gas encountering the flow dividing plate can partially flow out of the gas outlet and partially flow back to be further mixed in a reflux manner, thereby realizing control of the flame intensity and enhancement of the fully mixing degree of gas and air and improvement of the combustion performance. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0031] Figure 1 An explosion view of the updraft combustion burner provided by the embodiments of the application;

[0032] Figure 2 A schematic view of the overall structure of the updraft combustion burner provided by the embodiments of the application;

[0033] Figure 3 A schematic view of the structure of the flow dividing plate provided by the embodiments of the application;

[0034] Figure 4 A side view of the gas stove head provided by the embodiments of the application;

[0035] Figure 5 A Figure 4 1-1 cross-sectional view shown in the figure;

[0036] Figure 6 A schematic view of the structure of the gas stove head provided by the embodiments of the application;

[0037] Figure 7 AFigure 6 the 2-2 cross-sectional view shown;

[0038] Figure 8 the side cross-sectional view of the upper air inlet burner provided by the embodiment of the present application;

[0039] Figure 9 the Figure 8 the enlarged view of part A shown;

[0040] Figure 10 the Figure 8 the enlarged view of part B shown.

[0041] Reference signs:

[0042] 100 - gas burner head;

[0043] 10 - outer ring structure;

[0044] 11 - inner ring wall;

[0045] 12 - outer ring wall;

[0046] 121 - outer ring lower peripheral wall;

[0047] 1211 - lateral end portion;

[0048] 122 - outer ring upper peripheral wall;

[0049] 1221 - vertical peripheral wall;

[0050] 13 - protruding blocking portion;

[0051] 131 - fixing hole site;

[0052] 14 - outer ring flow channel;

[0053] 15 - mixing cavity;

[0054] 161 - first recirculation zone;

[0055] 162 - second recirculation zone;

[0056] 163 - recirculation inflection point;

[0057] 20 - outer ring injection pipe;

[0058] 21 - inlet;

[0059] 22 - outlet;

[0060] 30 - flow distribution plate;

[0061] 31 - upper baffle;

[0062] 311 - first upper baffle;

[0063] 3111 - first gas outlet;

[0064] 312 - second upper baffle;

[0065] 313 - mounting through hole;

[0066] 32 - lower baffle;

[0067] 321 - notch;

[0068] 33 - vertical wall;

[0069] 34 - second gas outlet;

[0070] 40 - inner ring center structure;

[0071] 1000 - upper air inlet burner;

[0072] 200 - outer ring fire cover;

[0073] 300 - inner ring fire cover;

[0074] 400 - nozzle seat;

[0075] 401 - first gas supply channel;

[0076] 402 - second gas supply channel;

[0077] 403 - outer ring main fire pipeline;

[0078] 4031 - outer ring main fire nozzle;

[0079] 404 - inner ring main fire pipeline;

[0080] 4041 - inner ring main fire nozzle. DETAILED DESCRIPTION

[0081] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0082] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0083] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0084] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0085] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0086] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0087] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0088] like Figure 1 and Figure 2As shown, the embodiment of the present application provides a gas stove head 100 and an updraft burner 1000 with the gas stove head 100. The gas stove head 100 comprises an outer ring structure 10 and a central inner ring structure 40, the outer ring structure 10 comprises an inner ring wall 11 and an outer ring wall 12 which are connected at the bottom and spaced apart at the top, and the central inner ring structure 40 is located inside the inner ring wall 11, and the outer ring structure 10 forms an outer ring flow channel 14 and a mixing chamber 15 which are communicated with each other. The updraft burner 1000 further comprises an outer ring fire cover 200 which is buckled on the outer ring structure 10, an inner ring fire cover 300 which is buckled on the central inner ring structure 40, and a nozzle seat 400, the nozzle seat 400 comprises a first gas supply passage 401 and a second gas supply passage 402, the first gas supply passage 401 comprises an outer ring main fire pipe 403, and the outer ring main fire nozzle 4031 is arranged at the gas outlet end of the outer ring main fire pipe 403, and the outer ring main fire nozzle 4031 is arranged corresponding to the inlet 21 of the outer ring injection pipe 20, preferably, the center of the outer ring main fire nozzle 4031 is arranged in the same plane with the center axis of the outer ring injection pipe 20, so that the gas can be directly and fully sprayed into the outer ring injection pipe 20. The outer ring injection pipe 20 is arranged below the outer ring flow channel 14, and the outlet 22 of the outer ring injection pipe 20 is communicated with the mixing chamber 15. The second gas supply passage 402 comprises an inner ring main fire pipe 404, and the inner ring main fire nozzle 4041 is arranged at the gas outlet end of the inner ring main fire pipe 404.

[0089] As shown, Figure 1 and Figure 3 The gas stove head 100 further comprises a flow dividing plate 30 which is buckled in the outer ring structure 10, the flow dividing plate 30 is provided with a first flow dividing area and a second flow dividing area, the first flow dividing area is arranged above the outer ring flow channel 14, the second flow dividing area is arranged above the mixing chamber 15, the first flow dividing area has a first gas outlet 3111, and the second flow dividing area has a second gas outlet 34, and the aperture of the first gas outlet 3111 is larger than the aperture of the second gas outlet 34.

[0090] Compared with the prior art, the gas stove head 100 and the updraft burner 1000 provided by the embodiment of the present application have the advantages that Figures 8 to 10As shown, the mixed gas of gas and air in the outer ring ejector pipe 20 flows out from the outlet 22 into the mixing chamber 15 for full mixing, improving the combustion performance of the burner; part of the mixed gas in the mixing chamber 15 flows upward until entering the outer ring flame cover 200 above the outer ring structure 10 for combustion, and part of the mixed gas flows upward in a detour to the outer ring flow channel 14 above the outer ring ejector pipe 20, which is in communication with the mixing chamber 15, and then flows upward until entering the outer ring flame cover 200 above the outer ring structure 10 for combustion. In this process, the mixed gas can be further fully mixed, but the gas flow rate and gas quantity in the mixing chamber 15 are both greater than those in the outer ring flow channel 14, which easily leads to uneven flames in the two areas, i.e., the flame above the mixing chamber 15 is longer and the flame above the outer ring flow channel 14 is shorter. Based on this, the embodiment of the present application further provides a flow dividing plate 30 above the outer ring flow channel 14 and the mixing chamber 15, which plays a role of setting a certain resistance to the upward flowing mixed gas, so that the mixed gas encountering the flow dividing plate 30 can partially flow out through the gas outlet (first gas outlet 3111 and / or second gas outlet 34) and partially flow back to further reflow mixing, thereby achieving control of the flame intensity and enhancement of the full mixing degree of gas and air, improving the combustion performance. In addition, the diameter of the first gas outlet 3111 of the first flow dividing area above the outer ring flow channel 14 is greater than the diameter of the second gas outlet 34 of the second flow dividing area above the mixing chamber 15, the size of the gas outlet in the area with large gas flow rate and large gas quantity is reduced, and the size of the gas outlet in the area with small gas flow rate and small gas quantity is increased, so as to balance the gas flow rate and gas quantity in the two areas, enhance the flame uniformity, and improve the combustion performance of the burner.

[0091] A specific embodiment is as shown in Figure 3 The aforementioned flow dividing plate 30 can include an upper baffle 31, a lower baffle 32, and a vertical wall 33 connecting the upper baffle 31 and the lower baffle 32, and the upper baffle 31 includes a first upper baffle 311 and a second upper baffle 312 arranged in connection. The aforementioned first flow dividing area includes the first upper baffle 311, and the first upper baffle 311 is provided with at least one aforementioned first gas outlet 3111. The aforementioned second flow dividing area includes the second upper baffle 312 and the lower baffle 32, and at least two vertical walls 33 are arranged between the second upper baffle 312 and the lower baffle 32 and connect the two, and at least one aforementioned second gas outlet 34 is formed by being arranged at intervals between the at least two adjacent vertical walls 33. The second gas outlet 34 is a vertical gas outlet opening laterally, and the outlet is thus arranged to further hinder the upward flow of the mixed gas, thereby slowing down the flow rate. The first gas outlet 3111 and the second gas outlet 34 can be provided with multiple, and the multiple first gas outlets 3111 and / or the multiple second gas outlets 34 can be arranged at intervals, preferably uniformly arranged at intervals.

[0092] Preferably, the aforementioned upper baffle 31 is horizontally arranged, and the first gas outlet 3111 is a horizontal upward opening gas outlet. The horizontally arranged first gas outlet 3111 can better and more smoothly make the mixed gas flow upward and accelerate the flow rate. The aforementioned lower baffle 32 can also be horizontally arranged, and the bottom surface of the lower baffle 32 is higher than the highest point of the outlet 22 of the aforementioned outer ring ejector tube 20, so as not to affect the full discharge of the mixed gas from the outlet 22 of the outer ring ejector tube 20. Preferably, the upper baffle 31 is circumferentially arranged, and the top surface of the upper baffle 31 is lower than the top of the aforementioned outer ring structure 10, so that the upper baffle 31 can be buckled in the outer ring structure 10, facilitating the installation of the outer ring flame cover 200 and other devices.

[0093] As shown in Figures 8 to 10 , the specific flow process of the mixed gas in the aforementioned embodiment is that when the mixed gas of the fuel gas and the air flows into the mixing chamber 15, part of the gas can flow above the flow distributor 30 through the second gas outlet 34 and further into the inner part of the outer ring flame cover 200, and part of the gas is blocked by the lower baffle 32 and the upper baffle 31 and continues to flow and mix in the mixing chamber 15. When the mixed gas of the fuel gas and the air flows from the mixing chamber 15 into the outer ring flow channel 14, part of the gas flows above the flow distributor 30 through the first gas outlet 3111 and further into the inner part of the outer ring flame cover 200, and part of the gas is blocked by the upper baffle 31 and continues to flow and mix in the outer ring flow channel 14. Not only can the flame intensity and uniformity be balanced, but also the degree of full mixing of the mixed gas of the fuel gas and the air can be greatly improved, and the combustion performance of the burner can be greatly improved.

[0094] As shown in Figure 4 and Figure 5 , the arrow direction shown in the figure schematically shows the flow direction of the mixed gas. In order to make the mixed gas of the fuel gas and the air further fully mixed in the aforementioned mixing chamber 15 and improve the combustion state of the burner, at least one protruding blocking part 13 can be arranged in the aforementioned mixing chamber 15. The protruding blocking part 13 can be arranged protruding from the inner ring wall 11 towards the outer ring wall 12, so as to divide the mixing chamber 15 to form at least two first backflow areas 161. When the mixed gas flows to the vicinity of the protruding blocking part 13, it is blocked, forming the first backflow area 161 in the mixing chamber 15, prolonging the flow time of the mixed gas in the mixing chamber 15, and further promoting the full mixing of the fuel gas and the air. A specific embodiment is shown in Figure 5 and Figure 6As shown, the aforementioned protruding blocking part 13 separates the aforementioned mixing cavity 15 into two aforementioned first backflow zones 161, and each of the first backflow zones 161 is correspondingly provided with an outer ring ejection pipe 20, and the two outer ring ejection pipes 20 are symmetrically arranged on the two sides of the central axis of the outer ring structure 10. The symmetric arrangement not only facilitates the design and installation, but also can well achieve the role of the above-mentioned setting. Correspondingly, the upper air inlet burner 1000 can be respectively provided with two outer ring main fire pipe lines 403 corresponding to the two outer ring ejection pipes 20, and correspondingly provided with two outer ring main fire nozzles 4031.

[0095] A preferred embodiment is that the protruding end of the protruding blocking part 13 leaves a gap between the outer ring wall 12, so that the gap between the two parts of the separated mixing cavity 15 is communicated, and the overall flow of the mixed gas in the mixing cavity 15 is promoted. Another preferred embodiment is that the top of the protruding blocking part 13 is also lower than the top of the inner ring wall 11, so that a gap is also left at the upper part, which on the one hand can also make the gap between the two parts of the separated mixing cavity 15 communicated, and promote the overall flow of the mixed gas in the mixing cavity 15, and on the other hand can also facilitate the buckling of the flow distribution plate 30 into the outer ring structure 10 for installation.

[0096] More preferably, as shown in Figure 6 and Figure 7 The arrow direction shown in the figure schematically shows the flow direction of the mixed gas. In order to further make the mixed gas of the fuel gas and the air better and fully mixed, the outer ring wall 12 of the aforementioned mixing cavity 15 can include an outer ring lower circumferential wall 121 and an outer ring upper circumferential wall 122 which are connected to each other, the outer ring lower circumferential wall 121 is outwardly expanded, and the outer ring upper circumferential wall 122 is inwardly contracted to increase the internal space of the mixing cavity 15, the circumferential edge of the outer ring upper circumferential wall 122 can be located above the mixing cavity 15, and the circumferential edge can downwardly extend to be provided with a vertical circumferential wall 1221, and the mixed gas flowing to the outside of the vertical circumferential wall 1221 is blocked, so that the mixing cavity 15 forms a second backflow zone 162, and the flow time of the gas in the mixing cavity 15 is further prolonged, so that the fuel gas and the air are further fully mixed. The existence of the aforementioned first backflow zone 161 and the aforementioned second backflow zone 162 improves the poor ejection capacity and insufficient mixing caused by the short outer ring ejection pipe 20 in the prior art, ensures the uniform mixing of the fuel gas and the air, and improves the performance of the burner.

[0097] Further, the inlet 21 and the outlet 22 of the aforementioned outer ring ejection pipe 20 can be respectively located on the opposite sides of the central axis of the aforementioned outer ring structure 10. The pipe body of the outer ring ejection pipe 20 is as long as possible, which on the one hand improves its ejection capacity, and on the other hand further lengthens the detour length of the mixed gas flowing to the outer ring flow channel 14 located above the outer ring ejection pipe 20, and further improves the degree of full mixing.

[0098] More further, as shown inFigure 5 As shown, the lateral end 1211 of the aforementioned outer ring lower peripheral wall 121 can be connected with the lateral wall of the aforementioned outer ring ejector pipe 20, so that the lateral wall of the outer ring ejector pipe 20 and the outer ring wall 12 form a backflow inflection point 163. The flow time of the mixed gas in the mixing chamber 15 can be further prolonged, so that the fuel gas and the air are further fully mixed.

[0099] As shown in Figure 3 and Figure 7 In order to facilitate the installation of the aforementioned flow distribution plate 30 and facilitate the positioning of the installation, the lower baffle 32 of the aforementioned flow distribution plate 30 can be provided with a notch 321 corresponding to the position of the aforementioned protruding blocking part 13. The size of the notch 321 can accommodate the protruding blocking part 13 to pass through, so that the flow distribution plate 30 can be buckled in the outer ring structure 10 and fixed and positioned by the notch 321. Further, the second upper baffle 312 of the flow distribution plate 30 can be provided with a mounting through hole 313 corresponding to the position of the notch 321. Correspondingly, the top of the protruding blocking part 13 can be provided with a fixing hole 131 corresponding to the mounting through hole 313 to facilitate fixed connection. In order to improve the reliability of the fixed installation of the flow distribution plate 30, the aforementioned first upper baffle 311 can be provided with a plurality of first gas outlets 3111 at intervals. At least one of the intervals is provided with a mounting through hole 313. Correspondingly, the inner ring wall 11 is provided with a fixing hole 131 opposite to the aforementioned mounting through hole 313.

[0100] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A gas-fired burner head, characterized in that, include: A circumferentially arranged outer ring structure (10) includes an inner ring wall (11) connected at the bottom and an outer ring wall (12) spaced apart at the top. The outer ring structure (10) forms an interconnected outer ring flow channel (14) and a mixing chamber (15); and The outer ring ejector tube (20) located below the outer ring flow channel (14) has its outlet (22) connected to the mixing chamber (15); and A flow divider (30) is fastened to the outer ring structure (10). The flow divider (30) is provided with a first flow divider area and a second flow divider area. The first flow divider area is correspondingly located above the outer ring flow channel (14), and the second flow divider area is correspondingly located above the mixing chamber (15). The diversion plate (30) includes an upper baffle (31), a lower baffle (32) and a vertical wall (33) connecting the upper baffle (31) and the lower baffle (32). The upper baffle (31) includes a first upper baffle (311) and a second upper baffle (312) connected to each other. The first diversion area includes a first upper baffle (311), which has at least one first air outlet (3111); the second diversion area includes a second upper baffle (312) and a lower baffle (32), and at least two vertical walls (33) are disposed between the second upper baffle (312) and the lower baffle (32) and connect the two, and at least one second air outlet (34) is formed between at least two adjacent vertical walls (33), and the second air outlet (34) is a vertical air outlet that opens to the side; The diameter of the first air outlet (3111) is larger than the diameter of the second air outlet (34); the upper baffle (31) is horizontally arranged, and the first air outlet (3111) is a horizontal air outlet that opens upward.

2. The gas burner head according to claim 1, characterized in that, The upper baffle (31) is arranged circumferentially, and its top surface is lower than the top of the outer ring structure (10); and / or The bottom surface of the lower baffle (32) is higher than the highest point of the outlet (22) of the outer ring ejector tube (20).

3. The gas burner head according to claim 1, characterized in that, The mixing chamber (15) is provided with a protruding blocking part (13) protruding from the inner ring wall (11) toward the outer ring wall (12), which separates the mixing chamber (15) to form at least two first reflux zones (161).

4. The gas burner head according to claim 3, characterized in that, The lower baffle (32) has a notch (321) corresponding to the position of the protruding blocking part (13), and the size of the notch (321) is large enough to allow the protruding blocking part (13) to pass through.

5. The gas burner head according to claim 4, characterized in that, The second upper baffle (312) is provided with a mounting through hole (313) corresponding to the notch (321), and the top of the protruding blocking part (13) is provided with a fixing hole (131) corresponding to the mounting through hole (313); and / or Multiple first air outlets (3111) are spaced apart, and at least one of the spaces is provided with an installation through hole (313). Correspondingly, the inner ring wall (11) is provided with a fixing hole (131).

6. The gas burner head according to claim 3, characterized in that, A gap is left between the protruding end of the protruding blocking part (13) and the outer ring wall (12); and / or The top of the protruding blocking part (13) is lower than the top of the inner ring wall (11).

7. The gas burner head according to claim 4, characterized in that, The protruding blocking part (13) separates the mixing chamber (15) into two first reflux zones (161). Each first reflux zone (161) is provided with one outer ring ejector tube (20). The two outer ring ejector tubes (20) are arranged symmetrically on both sides relative to the central axis of the outer ring structure (10).

8. The gas burner head according to claim 7, characterized in that, The inlet (21) and outlet (22) of the outer ring ejector tube (20) are located on opposite sides of the central axis of the outer ring structure (10).

9. The gas burner head according to claim 1, characterized in that, The outer ring wall (12) of the mixing chamber (15) includes a lower outer ring wall (121) and an upper outer ring wall (122) that are connected to each other. The lower outer ring wall (121) is arranged to expand outward, and the upper outer ring wall (122) is arranged to contract inward. The circumferential edge of the upper outer ring wall (122) is located above the mixing chamber (15), and the circumferential edge extends downward to form a vertical circumferential wall (1221), so that the mixing chamber (15) forms a second reflux zone (162).

10. The gas burner head according to claim 9, characterized in that, The lateral end (1211) of the lower peripheral wall (121) of the outer ring is connected to the side wall of the outer ring ejector tube (20), and a reflux inflection point (163) is formed between the side wall of the outer ring ejector tube (20) and the outer ring wall (12).

11. A top-inlet burner, characterized in that, The gas burner (100) includes any one of claims 1-10, and the gas burner (100) further includes an inner ring center structure (40) located inside the inner ring wall (11), and the upper air intake burner (1000) further includes an outer ring flame cap (200) covering the outer ring structure (10) and an inner ring flame cap (300) covering the inner ring center structure (40).

12. The top-inlet burner according to claim 11, characterized in that, It also includes a nozzle seat (400), which includes a first gas supply channel (401). The first gas supply channel (401) includes an outer ring main fire pipeline (403), and its outlet end is provided with an outer ring main fire nozzle (4031). The outer ring main fire nozzle (4031) is provided corresponding to the inlet (21) of the outer ring ejector tube (20).

13. The top-inlet burner according to claim 12, characterized in that, The center of the outer ring main fire nozzle (4031) is flush with the central axis of the outer ring ejector tube (20).

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