Gas distribution seat and combustor

Abstract

The utility model belongs to the technical field of combustion, and particularly discloses a gas distribution seat and a combustor. An inner ring premixing cavity and an outer ring premixing cavity are formed in the upper end of the gas distribution base, an inner ring injection channel and an outer ring injection channel are arranged at the bottom of the gas distribution base, the gas outlet end of the outer ring injection channel is communicated with the outer ring premixing cavity, and on a horizontal projection plane, the inner ring injection channel stretches across the inner ring premixing cavity from the gas inlet end to the gas outlet end. The air outlet end of the inner ring injection channel extends to the position, close to the outer ring premixing cavity, of the outer ring inner enclosure wall. A communicating channel is arranged in the gas distribution base and extends to the inner ring premixing cavity from the outer ring inner enclosure wall, the outer end of the communicating channel communicates with the gas outlet end of the inner ring injection channel, and the inner end of the communicating channel communicates with the inner ring premixing cavity. According to the combustor, the injection capacity of the inner ring injection channel can be improved, the mixing uniformity of mixed gas of fuel gas and air in the inner ring injection channel and the inner ring premixing cavity is improved, the combustion stability is improved, harmful substances generated by combustion are reduced, and the combustion performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion, in particular to a gas distributor and a burner. Background Art

[0002] A gas stove is a common kitchen appliance that heats cooking utensils by igniting and burning gas. The burner is the core component of the gas stove, and its performance directly determines the performance of the gas stove.

[0003] A top-draft burner typically consists of a burner head, a gas distributor, and a flame cover assembly, arranged in order from bottom to top. The flame cover assembly has an outer ring flame hole and an inner ring flame hole. The upper end of the gas distributor is provided with an inner ring premixing chamber and an outer ring premixing chamber. The lower end of the gas distributor is provided with an inner ring ejector tube and an outer ring ejector tube. The air inlet end of the inner ring ejector tube faces the nozzle on the burner head, and the air outlet end is connected to the inner ring premixing chamber from above and below. The air inlet end of the outer ring ejector tube faces the nozzle on the burner head, and the air outlet end is connected to the outer ring premixing chamber. The burner head injects gas into the inner and outer ring ejector tubes through the nozzle, so that the gas and ejected air mix in the ejector tubes and flow to the corresponding premixing chambers.

[0004] The upper air inlet burner provided by the prior art has an inner ring ejector tube arranged at the bottom of the gas distributor seat. Due to the size of the gas distributor seat and the position of the inner ring premixing chamber, the inner ring ejector tube is usually short in length, resulting in insufficient ejection capacity of the inner ring ejector tube for air and insufficient mixing of gas and air in the inner ring ejector tube, thereby affecting the mixing uniformity and air flow velocity of the mixed gas flowing to the inner ring fire hole, resulting in incomplete combustion and unstable combustion, thereby affecting the combustion performance of the gas stove. Utility Model Content

[0005] One of the technical problems solved by the present utility model is to provide a gas distributor, which can effectively solve the problems of insufficient ejection capacity and insufficient mixing of air and gas caused by the short length of the inner ring ejector tube of the existing gas distributor, improve the ejection capacity of the inner ring ejector tube and enhance the adequacy of mixing of air and gas in the inner ring ejector tube.

[0006] The second technical problem solved by the present invention is to provide a burner that can effectively solve the problems of incomplete combustion and poor combustion stability caused by the mixing and supplementing of air and gas in existing burners, improve the combustion completeness and combustion stability, and enhance the performance of the burner.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A gas separation seat, wherein the upper end of the gas separation seat has an inner ring premixing chamber and an outer ring premixing chamber arranged at intervals surrounding the inner ring premixing chamber, the bottom of the gas separation seat is provided with an inner ring ejection channel and an outer ring ejection channel, the outlet end of the outer ring ejection channel is connected to the outer ring premixing chamber, and on a horizontal projection plane, the inner ring ejection channel spans the inner ring premixing chamber from the air inlet end to the air outlet end, and the air outlet end of the inner ring ejection channel extends to the inner surrounding wall of the outer ring near the outer ring premixing chamber;

[0009] A communication channel is provided inside the gas separation seat, and the communication channel extends from the inner surrounding wall of the outer ring to the inner ring premixing chamber, and the air inlet end of the communication channel is communicated with the air outlet end of the inner ring ejection channel, and the air outlet end of the communication channel is communicated with the inner ring premixing chamber.

[0010] Compared with the background technology, the gas distributor seat described in the present invention has the following beneficial effects: since on the horizontal projection plane, the inner ring injection channel spans the inner ring premixing chamber from the air inlet end to the air outlet end, and the inner ring injection channel is connected with the inner ring premixing chamber through the connecting channel, the air outlet end of the inner ring injection channel and the inner ring premixing chamber are staggered on the horizontal plane, thereby increasing the length of the inner ring injection channel on the basis of the overall outer diameter of the gas distributor seat remaining unchanged, thereby enhancing the injection capacity of the inner ring injection channel for air and improving the mixing uniformity of air and gas in the inner ring injection channel; at the same time, due to the inner ring injection channel The air outlet end extends to the outer ring inner wall of the outer ring premixing chamber, and the connecting channel extends from the outer ring inner wall to the inner ring premixing chamber. In this way, the distance between the air outlet end of the inner ring ejection channel and the inner ring premixing chamber remains unchanged and the inner ring ejection channel is avoided from being connected to the outer ring premixing chamber. The distance between the air outlet end of the inner ring ejection channel and the inner ring premixing chamber and the length of the connecting channel are increased to a large extent, thereby effectively increasing the overall length of the inner ring ejection channel and the connecting channel, extending the flow path of the airflow from the air inlet end of the inner ring ejection channel to the inner ring premixing chamber, and effectively improving the mixing uniformity of air and gas before flowing into the inner ring premixing chamber.

[0011] In one embodiment, the ventilation cross-sectional area of ​​the air outlet end of the inner ring ejection channel is smaller than the ventilation cross-sectional area of ​​the air inlet end of the communication channel.

[0012] In one embodiment, the communication channel is arranged on the upper side of the inner ring ejection channel.

[0013] In one embodiment, the bottom of the gas distribution seat has an inner ring ejector tube, the inner cavity of the inner ring ejector tube forms the inner ring ejector channel, part of the tube wall of the inner ring ejector tube forms the lower channel wall of the connecting channel, the air outlet end of the inner ring ejector tube is spaced apart from the inner surrounding wall of the outer ring to form an inner ring air vent, the inner ring air vent connects the inner ring ejector channel and the connecting channel, and the ventilation area of ​​the inner ring air vent is greater than or equal to the ventilation cross-sectional area of ​​the air outlet end of the inner ring ejector channel.

[0014] In one embodiment, the gas separator includes a lower seat body, an intermediate seat body and an upper seat body. The lower seat body can be detachably mounted on the lower side of the intermediate seat body and together with the intermediate seat body form the outer ring ejection channel and the inner ring ejection channel. The upper seat body can be detachably mounted on the upper side of the intermediate seat body, and the upper seat body and the intermediate seat body together form the outer ring premixing chamber, the inner ring premixing chamber and the connecting channel.

[0015] In one embodiment, the lower seat body has a lower arc-shaped portion, the lower arc-shaped portion has a lower arc-shaped groove with an upward opening, and the outer side of the inner ring groove wall of the lower arc-shaped groove is connected to the inner ring lower half pipe portion and the outer ring lower half pipe portion;

[0016] The bottom of the intermediate seat body has an upper arc portion, an inner ring upper half pipe portion and an outer ring upper half pipe portion, the upper arc portion has an upper arc groove with an opening facing downward, the outer ring upper plate pipe portion is connected to the outer side of the inner ring groove wall of the upper arc groove, and the inner ring upper half pipe portion is spaced apart from the inner ring groove wall of the upper arc groove to form an inner ring vent;

[0017] The lower arc portion is buckled and connected with the upper arc portion to enclose an outer ring ventilation cavity, the outer ring ventilation cavity is communicated with the outer ring premixing cavity, and the outer ring inner wall includes the outer ring groove wall of the lower arc groove and the outer ring groove wall of the upper arc groove;

[0018] The outer ring upper half pipe portion and the outer ring lower half pipe portion are buckled together and enclosed to form the outer ring ejection channel, the outer ring ejection channel is connected with the outer ring ventilation cavity, the inner ring upper half pipe portion and the inner ring lower half pipe portion are buckled together and enclosed to form the inner ring ejection channel, and the inner ring vent is connected with the inner ring ejection channel and the connecting channel.

[0019] In one embodiment, the intermediate seat body includes an intermediate plate portion and an intermediate outer ring portion arranged around the outer periphery of the intermediate plate portion, and the upper seat body includes an upper inner ring portion and an upper outer ring portion spaced apart from each other, and the upper inner ring portion and the intermediate seat body together form the inner ring premixing chamber;

[0020] The upper outer ring portion is spaced apart and arranged on the inner side of the middle outer ring portion. The upper outer ring portion, the middle outer ring portion and the middle plate portion together form the outer ring premixing chamber. The outer ring inner wall includes the upper outer ring portion.

[0021] The upper seat body further includes a communication bridge portion connected between the upper inner ring portion and the upper outer ring portion, and the communication bridge portion and the middle seat body together form the communication channel.

[0022] In one embodiment, the gas separator further includes an annular inner ring flow guide, which is installed in the inner ring premixing chamber, and the outer side wall of the inner ring flow guide is in contact with the circumferential wall of the inner ring premixing chamber.

[0023] In one embodiment, the inner ring guide is die-cast in the inner ring premixing chamber.

[0024] The second technical problem mentioned above is solved by the following technical solution:

[0025] A burner comprises any one of the above-mentioned gas distributors.

[0026] Compared with the background technology, the burner of the present invention has the following beneficial effects: by adopting the above-mentioned gas distributor, the combustion stability of the burner can be improved, the harmful substances generated by combustion can be reduced, and the combustion performance of the gas stove can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of the gas distributor provided in the first embodiment of the present invention at a first viewing angle;

[0028] Figure 2 A schematic structural diagram of the gas distributor provided in the first embodiment of the present invention at a second viewing angle;

[0029] Figure 3 A cross-sectional view of the gas distributor provided in Example 1 of the present utility model;

[0030] Figure 4 for Figure 3 A partial enlarged view of point I in the middle;

[0031] Figure 5 A schematic diagram of the disassembled structure of the gas distributor provided in Example 1 of the present utility model;

[0032] Figure 6 A schematic structural diagram of the lower seat provided in Example 1 of the present utility model at one viewing angle;

[0033] Figure 7 A schematic structural diagram of the lower seat provided in the first embodiment of the present utility model from another perspective;

[0034] Figure 8 A schematic structural diagram of the intermediate base provided in Example 1 of the utility model at a certain viewing angle;

[0035] Figure 9 A schematic structural diagram of the intermediate base provided in the first embodiment of the utility model from another perspective;

[0036] Figure 10 A schematic structural diagram of the upper base provided in Example 1 of the present utility model at one viewing angle;

[0037] Figure 11 A schematic structural diagram of the upper base provided in the first embodiment of the present invention from another perspective;

[0038] Figure 12 A schematic structural diagram of a burner provided in Example 2 of the present utility model;

[0039] Figure 13 A cross-sectional view of a burner provided in Example 2 of the present utility model;

[0040] Figure 14 for Figure 13 A partial enlarged view of the middle J;

[0041] Figure 15 This is a schematic diagram of the disassembled structure of the burner provided in Example 2 of the present utility model.

[0042] Description of labels:

[0043] 100, gas distributor; 200, burner assembly; 201, burner base; 202, nozzle; 203, positioning protrusion; 2031, positioning slot; 300, inner ring fire cover; 301, inner ring fire hole; 400, outer ring fire cover; 401, outer ring fire hole;

[0044] 1. Intermediate seat; 11. Inner ring upper half-tube; 12. Outer ring upper half-tube; 13. Upper arc portion; 131. Upper arc groove; 132. Middle inner wall; 14. Intermediate plate; 141. Outer ring vent; 15. Intermediate outer ring; 16. Separator; 17. Upper positioning protrusion; 18. Upper fixing portion; 19. Lower fixing portion; 110. Fastening boss; 120. Transition connection portion; 130. Lower positioning groove; 140. Inner ring vent;

[0045] 2. Lower seat; 21. Inner ring lower half-tube; 22. Outer ring lower half-tube; 23. Lower arc-shaped portion; 231. Lower arc-shaped groove; 232. Lower inner surrounding wall; 24. Stop member; 25. Lower fixing ear; 26. Lower positioning protrusion; 27. Positioning protrusion;

[0046] 3. Upper seat; 31. Upper inner ring; 32. Upper outer ring; 33. Connecting bridge; 34. Connecting bridge; 35. Upper positioning groove;

[0047] 4. Inner ring guide;

[0048] 5. Outer ring guide;

[0049] 10. Inner ring ejection channel; 20. Outer ring ejection channel; 30. Connecting channel; 40. Inner ring premixing chamber; 50. Outer ring premixing chamber; 60. Outer ring ventilation chamber; 70. Outer ring inner wall. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0051] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0054] Example 1

[0055] like Figures 1 to 3As shown, this embodiment provides a gas separation seat 100, which can be used in a burner to achieve gas separation between the inner ring fire hole 301 and the outer ring fire hole 401 in the burner, and enhance the mixing uniformity of air and gas flowing to the inner ring fire hole 301.

[0056] Specifically, the upper end of the gas separation seat 100 has an inner ring premixing chamber 40 and an outer ring premixing chamber 50 arranged at intervals around the inner ring premixing chamber 40; the bottom of the gas separation seat 100 is provided with an inner ring introduction channel 10 and an outer ring introduction channel 20, the air inlet end of the outer ring introduction channel 20 is used for the intake of gas and air, and the air outlet end of the outer ring introduction channel 20 is connected to the outer ring premixing chamber 50; on the horizontal projection plane, the inner ring introduction channel 10 spans the inner ring premixing chamber 40 from the air inlet end to the air outlet end, and the air inlet end of the inner ring introduction channel 10 is used for the intake of gas and air, and the air outlet end of the inner ring introduction channel 10 extends to the outer ring inner wall 70 near the outer ring premixing chamber 50. A connecting channel 30 is also provided inside the gas distributor seat 100. The connecting channel 30 extends from the outer ring inner wall 70 to the inner ring premixing chamber 40, and the air inlet end of the connecting channel 30 is connected with the air outlet end of the inner ring ejection channel 10, and the air outlet end of the connecting channel 30 is connected with the inner ring premixing chamber 40, that is, the inner ring ejection channel 10 is connected with the inner ring premixing chamber 40 through the connecting channel 30.

[0057] The gas separation seat 100 provided in this embodiment has an inner ring ejection channel 10 that spans the inner ring premixing chamber 40 from the air inlet end to the air outlet end on the horizontal projection plane, and the inner ring ejection channel 10 is connected to the inner ring premixing chamber 40 through the connecting channel 30, so that the air outlet end of the inner ring ejection channel 10 and the inner ring premixing chamber 40 are staggered on the horizontal plane. This can increase the length of the inner ring ejection channel 10 on the basis of the overall outer diameter of the gas separation seat 100 remaining unchanged, thereby enhancing the ejection capacity of the inner ring ejection channel 10 for air and improving the mixing uniformity of air and gas in the inner ring ejection channel 10. At the same time, since the air outlet end of the inner ring ejection channel 10 extends to the outer ring premixing chamber 5 0 is located at the outer ring inner wall 70, and the connecting channel 30 extends from the outer ring inner wall 70 to the inner ring premixing chamber 40, so that the distance between the inner ring premixing chamber 40 and the outer ring premixing chamber 50 remains unchanged and the inner ring ejection channel 10 is avoided from being connected to the outer ring premixing chamber 50. The distance between the outlet end of the inner ring ejection channel 10 and the inner ring premixing chamber 40 and the length of the connecting channel 30 are increased to a large extent, thereby effectively increasing the overall length of the inner ring ejection channel 10 and the connecting channel 30, extending the flow path of the airflow from the air inlet end of the inner ring ejection channel 10 to the inner ring premixing chamber 40, and effectively improving the mixing uniformity of air and gas before flowing into the inner ring premixing chamber 40.

[0058] like Figure 3 and Figure 4As shown, in one embodiment, the cross-sectional area of ​​the air outlet of the inner ring ejection channel 10 is smaller than the cross-sectional area of ​​the air inlet of the connecting channel 30. This ensures that the mixed airflow does not experience flow obstruction or deceleration when flowing from the inner ring ejection channel 10 to the connecting channel 30, thereby facilitating the flow rate and velocity of the mixed airflow flowing to the inner ring premixing chamber 40.

[0059] Furthermore, the ventilation cross-sectional area of ​​the communication channel 30 is the same from the air inlet end to the air outlet end, or the ventilation cross-sectional area of ​​the communication channel 30 tends to increase from the air inlet end to the air outlet end, thereby ensuring smoothness of the mixed air flow when flowing in the communication channel 30.

[0060] In one embodiment, the communication channel 30 is located above the inner ring ejector channel 10, thereby facilitating the processing of the communication channel 30 and reducing the processing difficulty and cost of the gas distributor 100. In other embodiments, the communication channel 30 may also be located on one side of the inner ring ejector channel 10 along the circumference of the inner ring premixing chamber 40.

[0061] The outer ring inner wall 70 extends downward from the bottom of the outer ring premixing chamber 50, and the bottom of the gas separation seat 100 is provided with an inner ring ejector tube, which includes two inner ring half-tube portions arranged opposite to each other in the upper and lower directions. The two inner ring half-tube portions together form an inner ring ejector channel 10, one end of one inner ring half-tube portion is connected to the outer ring inner wall 70, and the corresponding end of the other inner ring half-tube portion is spaced apart from the outer ring inner wall 70 to form an inner ring vent 140, which connects the gas outlet end of the inner ring ejector channel 10 and the connecting channel 30.

[0062] Specifically, further, the ventilation area of ​​the inner ring vent 140 is larger than the ventilation area of ​​the air outlet end of the inner ring injection channel 10 to ensure smooth flow of the mixed air from the inner ring injection channel 10 through the inner ring vent 140 .

[0063] In one embodiment, the upper part of the tube wall of the inner ring ejector tube forms the lower channel wall of the connecting channel 30 and the partial cavity bottom of the inner ring premixing chamber 40, thereby shortening the vertical distance between the connecting channel 30 and the inner ring ejector channel 10, improving the structural compactness, and reducing the processing difficulty of the connecting channel 30.

[0064] like Figure 3 、 Figure 4 and Figure 9 As shown, since the outer ring injection channel 20 is arranged at the bottom of the gas separation seat 100 and the outer ring premixing chamber 50 is arranged on the upper side of the gas separation seat 100, an outer ring air vent 141 is opened at the bottom of the outer ring premixing chamber 50, and the air outlet end of the outer ring injection channel 20 is connected to the outer ring premixing chamber 50 through the outer ring air vent 141.

[0065] In one embodiment, an outer ring ventilation cavity 60 is provided inside the gas separation seat 100. The outer ring ventilation cavity 60 is provided on the lower side of the outer ring premixing cavity 50 and is separated from the outer ring premixing cavity 50. The outer ring vent 141 connects the outer ring ventilation cavity 60 and the outer ring premixing cavity 50. The outlet end of the outer ring ejection channel 20 is connected to the outer ring ventilation cavity 60, that is, the gas flowing out of the outer ring ejection channel 20 passes through the outer ring ventilation cavity 60 and the outer ring ventilation cavity 60 in sequence and enters the outer ring premixing cavity 50. The provision of the outer ring ventilation cavity 60 can achieve a smooth transition of the premixed gas from the relatively lower outer ring ejection channel 20 to the relatively higher outer ring premixing cavity 50, thereby ensuring the smooth flow of the premixed gas to the outer ring premixing cavity 50.

[0066] Furthermore, the outer ring inner wall 70 extends downward and forms the inner wall of the outer ring ventilation cavity 60. Vertically, the outlet end of the inner ring ejection channel 10 directly faces the outer ring ventilation cavity 60. In other words, the outer ring inner wall 70 forms not only the inner wall of the outer ring premixing cavity 50, but also the inner wall of the outer ring ventilation cavity 60, simplifying the structure and reducing the difficulty of manufacturing the gas distributor 100. Furthermore, the outlet end of the inner ring ejection channel 10 directly faces the outer ring ventilation cavity 60, ensuring that the inner and outer ring ejection channels 10 and 20 are aligned in height.

[0067] The outer and inner ring ejection channels 20 and 10 extend in the same direction, i.e., they are parallel and spaced apart. This simplifies the structure of the gas distributor 100, reduces the probability of interference between the inner and outer ring ejection channels 10 and 20, and facilitates docking of the inner and outer ring ejection channels 10 and 20 with the burner nozzles 202. Furthermore, the centerlines of the outer and inner ring ejection channels 20 and 10 lie on the same horizontal plane.

[0068] like Figure 1 、 Figure 3 and Figure 4 As shown, in one embodiment, two outer ring injection channels 20 are provided, and the two outer ring injection channels 20 are respectively located on opposite sides of the inner ring injection channel 10, and the two outer ring injection channels 20 are respectively connected to the two ends of the outer ring ventilation cavity 60, so that the mixed gas of air and fuel gas injected by the two outer ring injection channels 20 can enter the outer ring ventilation cavity 60 and flow to the outer ring premixing cavity 50 through the outer ring vent 141.

[0069] To improve the uniformity of the mixed gas within the outer ring premixing chamber 50, in one embodiment, a partition 16 is protruding from the bottom of the outer ring premixing chamber 50. Outer ring vents 141 are provided on opposite sides of the bottom of the outer ring premixing chamber 50, and the gas outlets of the two outer ring ejection channels 20 are connected to the outer ring premixing chamber 50 through the two outer ring vents 141. An outer ring flow guide 5 is also provided within the outer ring premixing chamber 50 to guide the mixed gas entering the outer ring premixing chamber 50 through the outer ring vents 141 to flow in a direction away from the partition 16.

[0070] By setting the outer ring guide member 5, the premixed gas flowing into the outer ring premixing chamber 50 from the outer ring air vent 141 can be guided to flow along the circumference of the outer ring premixing chamber 50, thereby avoiding the mixed gas flowing out of the outer ring air vent 141 to flow directly upward to the outer ring premixing chamber 50, and further avoiding the problem of low concentration of mixed gas at the position of the outer ring premixing chamber 50 far away from the outer ring air vent 141, thereby improving the uniformity of distribution of the mixed gas in the outer ring premixing chamber 50, thereby ensuring the uniformity of the premixed gas flowing out of the outer ring fire hole 401 at various locations, and improving combustion stability.

[0071] In one embodiment, a stop member 24 is protruding upward from the bottom of the outer ring ventilation cavity 60, and the stop member 24 abuts against the upper cavity wall of the outer ring ventilation cavity 60 and is arranged vertically opposite to the partition 16, thereby dividing the outer ring ventilation cavity 60 into two non-connected ventilation cavity portions, and the two outer ring introduction channels 20 are respectively connected to the corresponding outer ring vents 141 through the two ventilation cavity portions, further improving the flow uniformity of the premixed gas flowing to both sides of the partition 16; at the same time, by setting the stop member 24 to separate the two ventilation cavity portions, it can effectively avoid the collision of the two gases flowing out of the two outer ring introduction channels 20 to cause airflow turbulence and noise problems, thereby improving the balance of airflow.

[0072] In one embodiment, the outer ring flow guide 5 includes an arcuate flow guide plate that matches the shape of the outer ring premixing chamber 50. The arcuate flow guide plate is positioned within the outer ring premixing chamber 50 and abuts the upper side of the partition 16. In horizontal projection, the outer ring flow guide 5 covers the two outer ring air vents 141, and the outer ring flow guide 5 is spaced apart from the adjacent outer ring air vents 141 at both ends along the circumference of the air separator 100. By configuring the outer ring flow guide 5 as an arcuate flow guide plate that covers the outer ring air vents 141, the installation of the outer ring flow guide 5 can be simplified, and the flow guiding effect of the outer ring flow guide 5 can be controlled by adjusting the length of the arcuate flow guide plate.

[0073] In order to better ensure the guiding effect of the outer ring guide member 5, in one embodiment, the central angle between the end of the outer ring guide member 5 and the partition 16 is 15°~50°, so as to avoid the outer ring guide member 5 extending too long, resulting in a small amount of mixed gas in the outer ring premixing chamber 50 on the upper side of the outer ring guide member 5, and also to avoid the poor guiding effect caused by the outer ring guide member 5 extending too short.

[0074] To facilitate assembly and disassembly of the outer ring flow guide 5, a fastening boss 110 is provided on the bottom of the outer ring premixing chamber 50. One fastening boss 110 is provided on each opposite side of the partition 16. Fastening threaded holes are provided on the fastening boss 110, and fastening through holes are provided on the outer ring flow guide 5. The fastening through holes correspond to the fastening threaded holes. The outer ring flow guide 5 and the fastening boss 110 are connected by fasteners inserted through the fastening through holes and the fastening threaded holes. In other embodiments, the outer ring flow guide 5 can also be connected to the wall of the outer ring premixing chamber 50 by snap-fitting or other connection methods.

[0075] Furthermore, the two outer ring ejection channels 20 are symmetrically arranged relative to the inner ring ejection channel 10 , and the partition 16 and the stop member 24 are both directly facing the gas outlet end of the inner ring ejection channel 10 .

[0076] In one embodiment, the gas distributor 100 further includes an inner ring flow guide 4, which is mounted within the inner ring premixing chamber 40 and has an inner ring flow guide hole extending vertically therethrough. The mixed gas entering the inner ring premixing chamber 40 flows out through the inner ring flow guide hole on the inner ring flow guide 4, thereby controlling the flow path, direction, and velocity of the mixed gas out of the inner ring premixing chamber 40.

[0077] In one embodiment, the inner ring flow guide 4 is an annular structure with an outer diameter equal to the outer diameter of the inner ring premixing chamber 40. The inner hole of the annular structure forms an inner ring flow guide hole, thereby simplifying the structure of the inner ring flow guide 4 and reducing the difficulty of manufacturing the inner ring flow guide 4. In other embodiments, the inner ring flow guide 4 may also be a plate-shaped structure with multiple inner ring flow guide holes distributed thereon.

[0078] In one embodiment, the inner ring guide member 4 is integrally die-casted on the cavity wall of the inner ring premixing cavity 40 to ensure the stability of the inner ring guide member 4 in the inner ring premixing cavity 40 .

[0079] In other embodiments, a mounting protrusion is provided on the wall of the inner ring premixing chamber 40 , and the inner ring guide member 4 is supported on the mounting protrusion and connected to the mounting protrusion through fasteners, which can be but are not limited to rivets or screws.

[0080] like Figure 3 and Figure 5As shown, in order to reduce the processing difficulty of the gas distribution seat 100, the gas distribution seat 100 comprises a lower seat body 2, an intermediate seat body 1 and an upper seat body 3 which are arranged separately. The lower seat body 2 is detachably installed on the lower side of the intermediate seat body 1, and the lower seat body 2 and the intermediate seat body 1 jointly form the inner ring ejection channel 10 and the outer ring ejection channel 20. The upper seat body 3 is detachably installed on the upper side of the intermediate seat body 1, and the upper seat body 3 and the intermediate seat body 1 jointly form the inner ring premixing cavity 40, the communication channel 30 and the outer ring premixing cavity 50. Therefore, the processing of each part of the gas distribution seat 100 is facilitated, the processing difficulty and cost are reduced, and the batch processing of the gas distribution seat 100 is facilitated. Meanwhile, compared with the conventional arrangement of dividing the gas distribution seat into two parts, the processing and forming of the communication channel 30 is facilitated.

[0081] As shown in Figure 3 and Figure 6-Figure 8 As shown, the lower seat body 2 comprises a lower arc-shaped part 23, the lower arc-shaped part 23 has a lower arc-shaped groove 231 with an opening facing upward, and the outer side of the inner ring groove wall of the lower arc-shaped groove 231 is connected with an inner ring lower half pipe part 21 and an outer ring lower half pipe part 22. The bottom of the intermediate seat body 1 has an upper arc-shaped part 13, an inner ring upper half pipe part 11 and an outer ring upper half pipe part 12. The upper arc-shaped part 13 has an upper arc-shaped groove 131 with an opening facing downward, the outer ring upper half pipe part 12 is connected to the outer side of the inner ring groove wall of the upper arc-shaped groove 131, and the inner ring upper half pipe part 11 is arranged spaced apart from the inner ring groove wall of the upper arc-shaped groove 131 to form an inner ring air vent 140. The upper arc-shaped part 13 and the lower arc-shaped part 23 are connected in a clamping manner and jointly form an outer ring air vent cavity 60, the outer ring upper half pipe part 12 and the outer ring lower half pipe part 22 are connected in a clamping manner and jointly form an outer ring ejection channel 20, and the inner ring upper half pipe part 11 and the inner ring lower half pipe part 21 are connected in a clamping manner and jointly form an inner ring ejection channel 10. The cooperation structure of the lower seat body 2 and the intermediate seat body 1 can simplify the structure of the lower seat body 2 and reduce the processing difficulty of the lower seat body 2. The outer ring inner surrounding wall 70 comprises the outer ring groove wall of the lower arc-shaped groove 231 and the outer ring groove wall of the upper arc-shaped groove 131.

[0082] Specifically, the lower arc-shaped part 23 comprises a lower inner surrounding wall 232 and a lower peripheral wall which are arranged spaced apart, a bottom plate part is connected between the lower ends of the lower inner surrounding wall 232 and the lower peripheral wall, and the lower inner surrounding wall 232 forms the inner ring groove wall of the lower arc-shaped groove 231. The two ends of the outer ring lower half pipe part 22 are arranged in an open manner, and the bottom plate part, the lower inner surrounding wall 232 and the lower peripheral wall are all connected with the outlet end side wall of the outer ring lower half pipe part 22. The gas outlet end of the inner ring lower half pipe part 21 is connected to the lower inner surrounding wall 232, and the lower inner surrounding wall 232 locally extends downward from the bottom plate part at the connection position of the inner ring lower half pipe part 21 to ensure the radius of the inner ring half ejection pipe.

[0083] Furthermore, the shape of the upper arcuate portion 13 matches that of the lower arcuate portion 23. The concave inner wall surface of the upper arcuate portion 13 forms a middle inner wall 132. The outer diameter and inner diameter of the middle inner wall 132 are respectively equal to those of the lower inner wall 232. The middle inner wall 132 forms the inner annular groove wall of the upper arcuate groove 131. The outer annular inner wall 70 includes the lower inner wall 232 and the middle inner wall 132.

[0084] Furthermore, the upper end of the lower seat body 2 has a first mating surface, and the bottom of the middle seat body 1 has a second mating surface, and the first mating surface and the second mating surface are in contact. Preferably, the center lines of the inner ring ejection channel 10 and the outer ring ejection channel 20 are located at the overlapping position of the first mating surface and the second mating surface, that is, the inner ring ejection tube and the outer ring ejection tube are separated in half to improve the processing convenience of the lower seat body 2 and the middle seat body 1.

[0085] To improve the assembly precision of the lower base body 2 and the intermediate base body 1, one of the first and second assembly surfaces is provided with a lower positioning protrusion 26, and the other is provided with a lower positioning groove 130. The lower positioning protrusion 26 is inserted into the lower positioning groove 130 to achieve the installation and positioning of the two, ensuring the tightness and reliability of the lower base body 2 and the intermediate base body 1 after assembly. In one embodiment, the lower positioning protrusion 26 is provided on the first assembly surface, and the lower positioning groove 130 is provided on the second assembly surface. In other embodiments, the lower positioning protrusion 26 is provided on the second assembly surface, and the lower positioning groove 130 is provided on the first assembly surface.

[0086] Preferably, the lower positioning protrusion 26 is arranged around the periphery of the inner ring ejection channel 10, the outer ring ejection channel 20 and the lower arc groove 231 to better ensure the sealing of the inner ring ejection channel 10, the outer ring ejection channel 20 and the outer ring ventilation cavity 60 after the lower seat body 2 and the middle seat body 1 are snapped together.

[0087] Furthermore, a sealant is provided between the first mating surface and the second mating surface, and the sealant is coated around the lower positioning protrusion 26 to ensure that after the lower positioning protrusion 26 is inserted into the lower positioning groove 130, the sealant between the first mating surface and the second mating surface can surround the inner ring injection channel 10, the outer ring injection channel 20 and the outer ring ventilation cavity 60, thereby ensuring the sealing of the cavity formed by the lower seat body 2 and the middle seat body 1 after they are connected.

[0088] In order to improve the tightness after the lower seat body 2 and the intermediate seat body 1 are connected, a plurality of lower fixing ears 25 are provided on the lower seat body 2, and a plurality of lower fixing parts 19 are provided on the intermediate seat body 1. A plurality of lower fixing ears 25 are arranged at intervals along the periphery of the lower seat body 2, and the lower fixing parts 19 and the lower fixing ears 25 are arranged in a one-to-one correspondence. The lower seat body 2 and the intermediate seat body 1 are connected by lower fasteners passing through the lower fixing ears 25 and the lower fixing parts 19.

[0089] Specifically, at least two lower fixing ears 25 are provided on opposite sides of the inner ring lower half-tube portion 21 and on opposite sides of each outer ring lower half-tube portion 22. At least two lower fixing ears 25 are provided on each side at intervals along the extension direction of the corresponding half-tube portion, and each lower fixing ear 25 on each side is provided at a position connected to the lower arc-shaped portion 23. Furthermore, a lower fixing ear 25 is also provided protruding from the bottom of the lower arc-shaped groove 231, and is located in the middle of the lower arc-shaped groove 231 along the arc length direction. The groove body of the upper arc-shaped groove 131 is also provided with a lower fixing portion 19 to ensure the tightness of the buckling connection between the upper arc-shaped portion 13 and the lower arc-shaped portion 23.

[0090] like Figure 3 and Figures 9 to 11 As shown, the intermediate seat body 1 comprises an intermediate plate 14, a lower curved portion 23, and an outer ring half-tube protruding from the underside of the intermediate plate 14. The intermediate plate 14 has a circular central escape area at its center, with an extended escape area located on one side of the central escape area. The air inlet end of the inner ring upper half-tube 11 protrudes from the bottom of the intermediate plate 14. The inner ring upper half-tube 11 extends radially across the central escape area and into the extended escape area, connecting to opposite side walls of the extended escape area. The inner ring upper half-tube 11 is spaced apart from a side wall of the extended escape area away from the central escape area to form an inner ring communication port. The inner ring sidewall of the central escape area is smoothly connected to the upper sidewall of the inner ring upper half-tube 11 via a transition connection 120. The transition connection 120, the inner ring upper half-tube 11, and the sidewalls of the central escape area together form an upper-opening central groove. The inner ring upper half-tube 11 and the sidewalls of the extended escape area together form an upper-opening ventilation groove.

[0091] In one embodiment, the intermediate body 1 further includes an intermediate outer ring portion 15 disposed around the outer periphery of the intermediate plate portion 14. The upper body 3 includes an upper inner ring portion 31 and an upper outer ring portion 32 coaxially connected. The upper inner ring portion 31 and the intermediate body 1 together form an inner premixing chamber 40. The upper outer ring portion 32 is coaxially and spaced apart from the inner side of the intermediate outer ring portion 15. The intermediate outer ring portion 15, the upper outer ring portion 32, and the intermediate plate portion 14 together form an outer premixing chamber 50. The outer inner surrounding wall 70 includes the upper outer ring portion 32. By using the intermediate body 1 and the upper body 3 to enclose the inner premixing chamber 40 and the outer premixing chamber 50, the structure of the upper body 3 and the intermediate body 1 can be simplified, reducing manufacturing difficulty. Specifically, the inner diameter of the upper inner ring portion 31 is the same as the diameter of the intermediate avoidance area and is coaxially arranged. That is, the groove wall of the central groove forms the bottom and part of the sidewall of the inner premixing chamber 40.

[0092] The upper body 3 also includes a connecting bridge portion 33 between the upper inner ring portion 31 and the upper outer ring portion 32. The connecting bridge portion 33, together with the intermediate body 1, forms a connecting passage 30. Specifically, the connecting bridge portion 33 covers the upper side of the vent groove and, together with the groove wall of the vent groove, forms the connecting passage 30. Furthermore, connecting bridge portions 34 are connected between the upper inner ring portion 31 and the lower outer ring portion. Multiple connecting bridge portions 34 are spaced apart along the circumference of the upper inner ring portion 31 to ensure the overall structural strength and rigidity of the upper body 3. The connecting bridge portions 34 are detachably connected to the intermediate body 1, facilitating the convenient connection between the upper and intermediate bodies 3 and 1.

[0093] The upper side of the intermediate base 1 has a third mating surface, and the lower side of the upper base 3 has a fourth mating surface, which mates with the third mating surface. One of the third and fourth mating surfaces is provided with an upper positioning protrusion 17, and the other is provided with an upper positioning groove 35. The upper positioning protrusion 17 is inserted into the upper positioning groove 35 to achieve assembly positioning between the intermediate base 1 and the upper base 3, ensuring assembly accuracy. In one embodiment, the upper positioning protrusion 17 is provided on the third mating surface, and the upper positioning groove 35 is provided on the fourth mating surface. In other embodiments, the upper positioning protrusion 17 may be provided on the fourth mating surface, while the upper positioning groove 35 is provided on the third mating surface.

[0094] The upper positioning groove 35 surrounds the periphery of the upper inner ring portion 31, the upper outer ring portion 32, and the connecting bridge portion 33. The shape of the upper positioning protrusion 17 matches the shape of the upper positioning groove 35. This ensures the shape accuracy and sealing of the outer ring premixing chamber 50, the inner ring premixing chamber 40, and the connecting passage 30 after the upper seat body 3 and the intermediate seat body 1 are fastened together. Furthermore, a sealant is provided between the third and fourth mating surfaces. The sealant surrounds the upper positioning groove 35 to ensure the sealing of the outer ring premixing chamber 50, the inner ring premixing chamber, and the connecting passage 30 at the connection between the upper seat body 3 and the intermediate seat body 1.

[0095] In one embodiment, the middle plate portion 14 is provided with a protruding upper fixing portion 18, and a plurality of upper fixing portions 18 are arranged at intervals around the periphery of the middle avoidance area and the inner periphery of the outer ring premixing chamber 50. The plurality of upper fixing portions 18 are respectively arranged opposite to the connecting bridge portion 33 and the connecting bridge portion 34, and the connecting bridge portion 33 and each connecting bridge portion 34 are correspondingly provided with connecting through holes, and the upper fixing portion 18 is provided with connecting threaded holes, and the upper seat body 3 and the middle seat body 1 are fastened by upper fasteners passing through the connecting through holes and the upper fixing portion 18.

[0096] The present invention also provides a gas stove comprising the aforementioned burner. The gas stove provided by the present invention, by adopting the aforementioned burner, can improve the combustion stability and reliability of the gas stove, reduce harmful substances generated during use of the gas stove, and improve the use efficiency of the gas stove.

[0097] Example 2

[0098] This embodiment provides a burner that can be used in a gas stove to achieve gas ignition and combustion while enhancing combustion stability and combustion reliability.

[0099] like Figures 12 to 15 As shown, the burner includes a burner head assembly 200, a gas distributor seat 100, and a fire cover assembly, which are arranged in sequence from bottom to top. The burner head assembly 200 includes a burner head seat 201 and a plurality of nozzles 202 mounted on the burner head seat 201. The gas distributor seat 100 adopts any of the above-mentioned gas distributor seats 100, which is mounted on the burner head seat 201, and the plurality of nozzles 202 are respectively arranged facing the air inlet ends of the inner ring injection channel 10 and the outer ring injection channel 20. The fire cover assembly includes an inner ring fire cover 300 and an outer ring fire cover 400 spaced apart and sleeved on the inner ring fire cover 300. The inner ring fire cover 300 is provided with an inner ring fire hole 301, and the outer ring fire cover 400 is provided with an outer ring fire hole 401 along the circumferential direction. The inner ring premixing chamber 40 of the gas distributor seat 100 is connected to the inner ring fire hole 301, and the outer ring premixing chamber 50 is connected to the outer ring fire hole 401.

[0100] The burner provided in this embodiment, by adopting the above-mentioned gas distributor 100, can extend the intake path of the mixed gas of air and gas into the inner ring premixing chamber 40, enhance the injection capability of the inner ring injection channel 10, and improve the mixing uniformity of air and gas in the inner ring injection channel 10, thereby improving the combustion stability and combustion reliability of the burner.

[0101] Furthermore, in order to improve the installation accuracy of the gas distribution seat 100 on the burner seat 201, the lower sides of the two outer ring ejector tubes are provided with positioning protrusions 27 protruding downward, and the upper end of the burner seat 201 is provided with a positioning slot 2031, and the positioning protrusion 27 is inserted into the positioning slot 2031 to realize the installation and positioning of the gas distribution seat 100 on the burner seat 201, avoiding the problem that the gas distribution seat 100 is installed skewed relative to the burner seat 201, resulting in the nozzle 202 and the corresponding ejector tube not being completely aligned.

[0102] In one embodiment, the upper end of the burner seat 201 has a plate-shaped support plate, and a positioning protrusion ring 203 is protruded from the upper end of the support plate. The inner wall of the positioning protrusion ring 203 is surrounded to form a positioning slot 2031, thereby avoiding the problem of reduced specific structural strength caused by grooving on the support plate.

[0103] It is worth noting that the installation structure of the burner head assembly 200, the fire cover assembly, the gas distributor seat 100 on the burner head assembly 200 and the installation structure of the fire cover assembly on the gas distributor seat 100 can all be set with reference to the existing technology. This is not the focus of the present invention, and the present invention does not limit or elaborate on this.

[0104] The present invention also provides a gas stove comprising the aforementioned burner. The gas stove provided by the present invention, by adopting the aforementioned burner, can improve the combustion stability and reliability of the gas stove, reduce harmful substances generated during use of the gas stove, and improve the use efficiency of the gas stove.

[0105] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0106] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A gas separation seat, wherein the upper end of the gas separation seat has an inner ring premixing chamber (40) and an outer ring premixing chamber (50) arranged around the inner ring premixing chamber (40), the bottom of the gas separation seat is provided with an inner ring ejection channel (10) and an outer ring ejection channel (20), the outlet end of the outer ring ejection channel (20) is communicated with the outer ring premixing chamber (50), characterized in that: On a horizontal projection plane, the inner ring ejection channel (10) spans the inner ring premixing chamber (40) from an air inlet end to an air outlet end, and the air outlet end of the inner ring ejection channel (10) extends to an outer ring inner surrounding wall (70) close to the outer ring premixing chamber (50); A communication channel (30) is provided inside the gas separation seat, and the communication channel (30) extends from the outer ring inner wall (70) to the inner ring premixing chamber (40), and the air inlet end of the communication channel (30) is communicated with the air outlet end of the inner ring ejection channel (10), and the air outlet end of the communication channel (30) is communicated with the inner ring premixing chamber (40).

2. The gas distributor according to claim 1, characterized in that: The ventilation cross-sectional area of ​​the air outlet end of the inner ring ejection channel (10) is smaller than the ventilation cross-sectional area of ​​the air inlet end of the communication channel (30).

3. The gas distributor according to claim 1, characterized in that: The communication channel (30) is arranged on the upper side of the inner ring ejection channel (10).

4. The gas distributor according to claim 3, characterized in that: The bottom of the gas separation seat is provided with an inner ring ejector tube, the inner cavity of the inner ring ejector tube forms the inner ring ejector channel (10), part of the tube wall of the inner ring ejector tube forms the lower channel wall of the connecting channel (30), the outlet end of the inner ring ejector tube is spaced apart from the inner surrounding wall (70) of the outer ring to form an inner ring vent (140), the inner ring vent (140) connects the inner ring ejector channel (10) and the inner ring vent (140) of the connecting channel (30), and the ventilation area of ​​the inner ring vent (140) is greater than or equal to the ventilation cross-sectional area of ​​the outlet end of the inner ring ejector channel (10).

5. The gas distributor according to any one of claims 1 to 4, characterized in that: The gas separation seat comprises a lower seat body (2), an intermediate seat body (1) and an upper seat body (3); the lower seat body (2) is detachably mounted on the lower side of the intermediate seat body (1) and is enclosed with the intermediate seat body (1) to form the outer ring ejection channel (20) and the inner ring ejection channel (10); the upper seat body (3) is detachably mounted on the upper side of the intermediate seat body (1), and the upper seat body (3) and the intermediate seat body (1) are enclosed to form the outer ring premixing chamber (50), the inner ring premixing chamber (40) and the connecting channel (30).

6. The gas distributor according to claim 5, characterized in that: The lower seat body (2) has a lower arc portion (23), the lower arc portion (23) has a lower arc groove (231) with an opening facing upward, and the outer side of the inner ring groove wall of the lower arc groove (231) is connected to the inner ring lower half pipe portion (21) and the outer ring lower half pipe portion (22); The bottom of the intermediate seat body (1) comprises an upper arc portion (13), an inner ring upper half pipe portion (11) and an outer ring upper half pipe portion (12); the upper arc portion (13) comprises an upper arc groove (131) with an opening facing downward; the outer ring upper half pipe portion (12) is connected to the outer side of the inner ring groove wall of the upper arc groove (131); the inner ring upper half pipe portion (11) and the inner ring groove wall of the upper arc groove (131) are spaced apart to form an inner ring vent (140); The lower arc-shaped portion (23) is buckled and connected with the upper arc-shaped portion (13) to enclose and form an outer ring ventilation cavity (60), the outer ring ventilation cavity (60) is communicated with the outer ring premixing cavity (50), and the outer ring inner surrounding wall (70) includes the outer ring groove wall of the lower arc-shaped groove (231) and the outer ring groove wall of the upper arc-shaped groove (131); The outer ring upper half pipe portion (12) and the outer ring lower half pipe portion (22) are buckled together and enclosed to form the outer ring ejection channel (20), and the outer ring ejection channel (20) is communicated with the outer ring ventilation cavity (60). The inner ring upper half pipe portion (11) and the inner ring lower half pipe portion (21) are buckled together and enclosed to form the inner ring ejection channel (10), and the inner ring vent (140) is connected to the inner ring ejection channel (10) and the communication channel (30).

7. The gas distributor according to claim 6, characterized in that: The intermediate seat body (1) comprises an intermediate plate portion (14) and an intermediate outer ring portion (15) arranged around the outer periphery of the intermediate plate portion (14); the upper seat body (3) comprises an upper inner ring portion (31) and an upper outer ring portion (32) spaced apart from each other; the upper inner ring portion (31) and the intermediate seat body (1) together enclose the inner ring premixing chamber (40); The upper outer ring portion (32) is spaced apart and arranged on the inner side of the middle outer ring portion (15); the upper outer ring portion (32), the middle outer ring portion (15) and the middle plate portion (14) together form the outer ring premixing chamber (50); and the outer ring inner surrounding wall (70) includes the upper outer ring portion (32); The upper seat body (3) further comprises a connecting bridge portion (33) connected between the upper inner ring portion (31) and the upper outer ring portion (32), and the connecting bridge portion (33) and the intermediate seat body (1) together form the connecting channel (30).

8. The gas distributor according to any one of claims 1 to 4, characterized in that: The gas separation seat further comprises an annular inner ring flow guide (4), the inner ring flow guide (4) being installed in the inner ring premixing cavity (40), and the outer side wall of the inner ring flow guide (4) being in contact with the circumferential cavity wall of the inner ring premixing cavity (40).

9. The gas distributor according to claim 8, characterized in that: The inner ring flow guide (4) is die-cast in the inner ring premixing cavity (40).

10. A burner, characterized in that: The invention comprises the gas distributor according to any one of claims 1 to 9.

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