Combustor and gas stove

Abstract

The utility model belongs to the technical field of stoves, and particularly discloses a burner and a gas stove. The combustor comprises a fire distributor and an inner ring injection channel. A central mixing cavity and a central guide cavity which are communicated with each other are formed in the fire distributor, the central guide cavity is located on the upper side of the central mixing cavity, and the central mixing cavity and the central guide cavity are staggered in the first horizontal direction; the inner ring injection channel communicates with the side face of the center mixing cavity, the outlet end of the inner ring injection channel and the center guide cavity are arranged in a staggered mode in the second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction. Compared with the prior art, the combustor has the advantages that on the premise that the size of the combustor does not need to be increased, the uniformity of mixing fuel gas with primary air is fully improved in the mode of prolonging the flowing path of the mixed gas in the fire distributor and the mode of increasing collision.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, and in particular to a burner and a gas stove. Background Technology

[0002] A gas stove is a kitchen cooking appliance that uses gas (such as natural gas or liquefied petroleum gas) as fuel. It produces a flame by burning the gas, which directly heats the cookware, thus enabling cooking. Gas stoves are widely used in homes and the catering industry due to their powerful firepower, rapid heating, and flexible operation. Top-intake burners are a common type of burner found in gas stoves; their characteristic is that air enters from above the burner, mixes with the gas, and then burns.

[0003] In the prior art, the top-inlet burner includes a flame distributor, on which a central mixing chamber and an outer ring mixing chamber are coaxially arranged. The central mixing chamber is generally a cylindrical cavity. The central ejector channel of the top-inlet burner is connected to the side of the central mixing chamber to deliver gas into the central mixing chamber.

[0004] Generally, the shorter the ejector channel, the worse the uniformity of the gas-air mixture. In the above-described top-intake burner structure, extending the length of the central ejector channel usually requires designing a larger burner, which is difficult to install in a gas stove with limited space. Furthermore, simply extending the length of the central ejector channel to improve the uniformity of the gas-air mixture is still insufficient. Utility Model Content

[0005] One of the technical problems solved by this invention is to provide a burner that can make the inner ring ejector channel longer without changing the burner size.

[0006] The second technical problem solved by this utility model is to provide a gas stove that can make the inner ring injection channel longer without changing the size of the burner.

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

[0008] The burner includes:

[0009] The fire distributor has a central mixing chamber and a central guiding chamber that are interconnected. The central guiding chamber is located above the central mixing chamber and the two are offset along a first horizontal direction.

[0010] The inner ring ejector channel is connected to the side of the central mixing cavity. The outlet end of the inner ring ejector channel is offset from the central guide cavity along the second horizontal direction, and the first horizontal direction and the second horizontal direction are perpendicular to each other.

[0011] The burner described in this utility model has the following advantages compared with the prior art:

[0012] In this burner, the central guide chamber is located above the central mixing chamber, and the two are offset along a first horizontal direction. Simultaneously, the outlet end of the inner ring ejector channel is connected to the side of the central mixing chamber, and the outlet end of the inner ring ejector channel is offset from the central guide chamber along a second horizontal direction. That is, the connection between the inner ring ejector channel and the central mixing chamber is offset from the central guide chamber along a second horizontal direction. With this configuration, the mixture formed after the initial mixing of gas and air within the inner ring ejector channel enters the central mixing chamber from the outlet end of the inner ring ejector channel and is ejected from the inner ring. The mixed gas exiting the channel first flows along a first horizontal direction, then undergoes a bend and flows along a second horizontal direction towards the connection between the central mixing chamber and the central guide chamber. When the mixed gas in the central mixing chamber reaches the central guide chamber, it undergoes a second bend, flowing in an inclined direction relative to the vertical (the second bend is upward), thus extending the flow path of the mixed gas within the distributor. Furthermore, the mixed gas undergoes two bends and collisions while flowing within the distributor, further enhancing the homogeneity of the mixture. Compared to the existing method of extending the central ejector channel, this burner, without increasing the burner size, significantly improves the homogeneity of the gas-air mixture by extending the flow path of the mixed gas within the distributor and increasing collisions.

[0013] In one embodiment, the distance between the projection of the center point of the outlet end face of the inner ring ejector channel and the projection of the center axis of the fire distributor is d1, and the maximum distance between the projection of the inner side face of the central mixing chamber and the projection of the center axis of the fire distributor is d2, along the radial direction of the fire distributor, where d1 is less than d2.

[0014] In one embodiment, the fire distributor includes:

[0015] The lower seat of the ignition distributor is provided with an outer ring mixing chamber and a central mixing chamber.

[0016] The upper cover of the ignition distributor is disposed on the lower seat of the ignition distributor. The upper cover of the ignition distributor is provided with an outer ring guiding cavity and a central guiding cavity. The outer ring mixing cavity and the outer ring guiding cavity are connected.

[0017] In one embodiment, the inner wall of the central guide cavity includes an inclined guide wall, and the gas in the central mixing cavity can flow along the inclined guide wall into the central guide cavity.

[0018] In one embodiment, the projections of the central mixing chamber and the central guide chamber are partially misaligned along the axial projection of the fire distributor.

[0019] In one embodiment, the central mixing chamber has a semi-circular cross-section.

[0020] In one embodiment, the burner further includes a burner head, and the flame distributor is installed on the burner head. One of the burner head and the flame distributor is provided with a positioning groove, and the other is provided with a positioning protrusion that cooperates with the positioning groove.

[0021] In one embodiment, the burner is further provided with two outer ring mixing chambers, which are rotationally symmetrical with respect to the center point of the burner. The burner also includes two outer ring ejector channels, which are arranged one-to-one with the outer ring mixing chambers, and the airflow directions in the two outer ring ejector channels are opposite.

[0022] In one embodiment, the projection along the axial direction of the fire distributor covers the projections of the inner ring ejector channel and the outer ring ejector channel.

[0023] The second technical problem mentioned above is solved by the following technical solution:

[0024] A gas stove, including a panel on which the aforementioned burner is mounted.

[0025] The gas stove described in this utility model has the following advantages compared with the prior art:

[0026] The gas stove includes the aforementioned burner, and in the gas stove,

[0027] The central guiding cavity is located above the central mixing cavity, and the two are offset along a first horizontal direction. Simultaneously, the outlet end of the inner ring ejector channel is connected to the side of the central mixing cavity, and the outlet end of the inner ring ejector channel is offset from the central guiding cavity along a second horizontal direction. That is, the connection between the inner ring ejector channel and the central mixing cavity is offset from the central guiding cavity along a second horizontal direction. With this configuration, the mixture formed after the initial mixing of gas and air in the inner ring ejector channel enters the central guiding cavity from the outlet end of the inner ring ejector channel. The mixed gas flowing out of the nozzle first flows along a first horizontal direction, then undergoes a bend and flows along a second horizontal direction towards the connection between the central mixing chamber and the central guide chamber. When the mixed gas in the central mixing chamber reaches the central guide chamber, it undergoes a second bend, flowing in an inclined direction relative to the vertical (the second bend is upward), thus extending the flow path of the mixed gas within the distributor. Furthermore, the mixed gas undergoes two bends and collisions while flowing within the distributor, further enhancing the homogeneity of the mixture. Compared to the existing method of extending the central ejector channel, this burner, without increasing the burner size, significantly improves the homogeneity of the gas-air mixture by extending the flow path of the mixed gas within the distributor and increasing collisions. Attached Figure Description

[0028] Figure 1 A schematic diagram of the burner provided in an embodiment of this utility model;

[0029] Figure 2 A schematic diagram illustrating the positional relationship between the inner ring ejector channel and the central mixing chamber, provided in an embodiment of this utility model;

[0030] Figure 3 A schematic diagram showing another positional relationship between the inner ring ejector channel and the central mixing chamber, provided for an embodiment of this utility model;

[0031] Figure 4 This is an exploded view of the burner provided in an embodiment of the present invention;

[0032] Figure 5 A first cross-sectional structural diagram of the burner provided in an embodiment of this utility model;

[0033] Figure 6 This is a schematic diagram of the second cross-sectional structure of the burner provided in an embodiment of the present utility model;

[0034] Figure 7 A schematic diagram from a first perspective of the lower seat of the fire distributor provided in an embodiment of this utility model;

[0035] Figure 8A schematic diagram from a second perspective of the lower seat of the fire distributor provided in an embodiment of this utility model;

[0036] Figure 9 A schematic diagram of the lower seat of the fire distributor provided in an embodiment of this utility model from a third perspective;

[0037] Figure 10 A schematic diagram from a first perspective of the fire distributor cover provided in an embodiment of this utility model;

[0038] Figure 11 A schematic diagram from a second perspective of the fire distributor cover provided in an embodiment of this utility model;

[0039] Figure 12 An exploded view of the inner ring flame cap provided in an embodiment of this utility model;

[0040] Figure 13 This is a cross-sectional structural diagram of the inner ring flame cap after the inner ring flame cap top cover is hidden, provided in an embodiment of the present utility model.

[0041] Label Explanation:

[0042] 1. Flame distributor; 11. Flame distributor lower seat; 111. Central mixing chamber; 1111. First connecting hole; 1112. Angled guide wall; 112. Outer ring mixing chamber; 113. Positioning protrusion; 12. Flame distributor upper cover; 121. Outer ring guide chamber; 122. Central guide chamber; 123. Second inner ring supply and intake structure; 124. First inner ring supply and intake structure;

[0043] 2. Inner ring ejection channel;

[0044] 3. Burner head; 31. Positioning groove;

[0045] 4. Inner ring burner cap; 41. Inner ring burner cap body; 411. Outer periphery; 4111. Overlapping step surface; 412. First inner ring burner cap hole; 413. Inner ring burner cap cavity; 4131. First cavity; 4132. Second cavity; 42. Separator; 43. Inner ring burner cap top cover; 431. Second inner ring burner cap hole;

[0046] 5. Outer ring flame cap;

[0047] 6. Outer ring ejection channel. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this application.

[0050] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] This embodiment provides a gas stove, which includes a panel on which a burner is mounted.

[0053] The mixture of air and gas can be burned at the burner to heat the cookware and meet the user's cooking needs.

[0054] Specifically, see Figures 1-6 The burner includes a flame distributor 1 and an inner ring ejector channel 2.

[0055] Specifically, see Figure 5 The fire distributor 1 is provided with a central mixing chamber 111 and a central guide chamber 122 that are interconnected. The central guide chamber 122 is located on the upper side of the central mixing chamber 111 and the two are offset along the first horizontal direction.

[0056] Specifically, see Figure 6 The inner ring ejector channel 2 is connected to the side of the central mixing cavity 111. The outlet end of the inner ring ejector channel 2 is offset from the central guide cavity 122 along the second horizontal direction, and the first horizontal direction and the second horizontal direction are perpendicular to each other.

[0057] In the burner provided in this embodiment, the central guide cavity 122 is located above the central mixing cavity 111, and the two are offset along a first horizontal direction; at the same time, the outlet end of the inner ring ejector channel 2 is connected to the side of the central mixing cavity 111, and the outlet end of the inner ring ejector channel 2 is offset from the central guide cavity 122 along a second horizontal direction, that is, the connection between the inner ring ejector channel 2 and the central mixing cavity 111 is offset from the central guide cavity 122 along a second horizontal direction; with this arrangement, the mixture formed after the gas and air are initially mixed in the inner ring ejector channel 2 enters the central mixing cavity 111 from the outlet end of the inner ring ejector channel 2. When the mixed gas flows out of the outlet end of the inner ring ejector channel 2, it first flows along the first horizontal direction, then undergoes a bend and flows along the second horizontal direction towards the connection between the central mixing chamber 111 and the central guide chamber 122. When the mixed gas in the central mixing chamber 111 flows to the central guide chamber 122, it undergoes a second bend to flow in an inclined direction relative to the vertical direction (the second bend is in an upward inclined direction), thereby extending the flow path of the mixed gas in the distributor 1. Furthermore, the mixed gas undergoes two bends and collisions while flowing in the distributor 1, further ensuring uniform mixing. Compared to the existing method of extending the central ejector channel, this burner, without increasing the burner size, significantly improves the uniformity of the gas-air mixture by extending the flow path of the mixed gas in the distributor 1 and increasing collisions, thereby improving the burner's heat load and the user experience.

[0058] Further, in one embodiment, the projection of the central axis of the fire distributor 1 onto the horizontal plane, along the outlet direction of the inner ring ejector channel 2 on the horizontal plane, the distance between the projection of the center point of the outlet end face of the inner ring ejector channel 2 and the projection of the central axis of the fire distributor 1 is d1; along the radial direction of the fire distributor 1, the maximum distance between the projection of the inner side of the central mixing chamber 111 and the projection of the central axis of the fire distributor 1 is d2, where d1 is less than d2.

[0059] Specifically, see Figure 2 and Figure 3 , Figure 2 and Figure 3 The central mixing cavity 111 with two different contours is shown.

[0060] Figure 2 and Figure 3 This is a schematic diagram showing the positional relationship between the projection of the center point of the outlet end face of the inner ring ejector channel 2 and the projection of the central axis of the ejector 1 onto the horizontal plane when the projection is along the central axis of the ejector 1.

[0061] For ease of description, on this horizontal plane, the projection of the center point of the outlet end face of the inner ring ejector channel 2 is point C; the projection of the central axis of the fire distributor 1 is point O; on this horizontal plane, along the outlet orientation of the inner ring ejector channel 2, the distance between point C and point O is the distance d1 between point C and line AB, where line AB is perpendicular to the outlet orientation of the inner ring ejector channel 2.

[0062] In existing burners, the central mixing chamber on the burner is generally a hollow cylindrical cavity. The inner ring ejector channel of the burner is connected to the side of the hollow cylindrical cavity. The distance between the connection point of the inner ring ejector channel and the hollow cylindrical cavity and the symmetrical plane of the burner is the radius of the central mixing chamber.

[0063] In the burner provided in this embodiment, d1 is smaller than d2. Thus, compared with the prior art, without increasing the size of the burner, the inner ring ejector channel 2 can occupy a part of the size of the central mixing chamber in the prior art, thereby extending the length of the inner ring ejector channel 2, fully improving the ejection capacity of the inner ring ejector channel 2, and ensuring that the air and gas in the inner ring ejector channel 2 can be initially mixed evenly.

[0064] Further optionally, in one embodiment, the central mixing cavity 111 has a semi-circular cross-section. Compared to Figure 2 and Figure 3 The irregular shape shown has a semi-circular cross-section for the central mixing cavity 111, which can reduce the difficulty and cost of manufacturing processes.

[0065] Specifically, see Figure 8 and Figure 9 The central mixing cavity 111 is a hollow semi-cylindrical cavity. Compared with the hollow cylindrical cavity of the central mixing cavity in the prior art, the central mixing cavity 111 in this embodiment only retains half of the one in the prior art. The other half of it disappears to provide space for the length extension of the inner ring ejection channel 2.

[0066] Specifically, see Figure 2 , Figure 8 and Figure 9 In this embodiment, the central mixing chamber 111 has two inner wall surfaces, one of which is an arc surface with a central angle of 180°, and the other is a plane. The inner wall surface of the plane is the plane on which the symmetry plane of the fire distributor 1 is located, and the inner wall surface of this plane has a first connecting hole 1111 that communicates with the inner ring ejector channel 2.

[0067] See Figure 3In some other embodiments, the central mixing cavity 111 has two inner wall surfaces, one of which is an arc surface with a central angle greater than 180°, and the other is a plane. The inner wall surface of the plane has a first connecting hole 1111 that communicates with the inner ring ejection channel 2.

[0068] Of course, in some embodiments, the central mixing cavity 111 may also have multiple inner wall surfaces, one of which is an arc surface with a central angle of 180°, and the other inner wall surfaces are planes distributed in a stepped manner. A first connecting hole 1111 communicating with the inner ring ejection channel 2 is opened on the inner wall surface of one of the planes.

[0069] Alternatively, in other embodiments, the central mixing cavity 111 may be approximately three-quarters cylindrical, having two inner wall surfaces. One inner wall surface is an arc surface with a central angle of 270°, and the other inner wall surface comprises two mutually perpendicular planes. The inner wall surface of any plane is the plane containing the plane of symmetry of the fire distributor 1, and the inner wall surface of one of the planes has a first connecting hole 1111 that communicates with the inner ring ejector channel 2.

[0070] Of course, in other embodiments, the shape of the central mixing cavity 111 can also be other, as long as d1 is less than d2.

[0071] In one embodiment, see Figures 1-6 The fire distributor 1 includes a lower fire distributor seat 11 and a upper fire distributor cover 12.

[0072] See Figure 7 The lower seat 11 of the fire distributor is provided with an outer ring mixing chamber 112 and a central mixing chamber 111. Specifically, the lower seat 11 of the fire distributor is a one-piece molded structure. When manufacturing the lower seat 11 of the fire distributor in one piece, three openings are made on the upper plate of the lower seat 11 of the fire distributor. Each of the three openings is provided with a downwardly extending cavity. The cavity located in the middle position of the three cavities is the central mixing chamber 111, and the other two are the outer ring mixing cavities 112.

[0073] The upper cover 12 of the fire distributor is located on the lower seat 11 of the fire distributor. See below. Figure 10 and Figure 11 The upper cover 12 of the fire distributor is provided with an outer ring guiding cavity 121 and a central guiding cavity 122, and the outer ring mixing cavity 112 and the outer ring guiding cavity 121 are connected.

[0074] Specifically, the central guiding cavity 122 is a cylindrical cavity to ensure that the flame of the central fire of the burner is stable and uniform; the outer ring guiding cavity 121 is an annular cavity to ensure that the flame of the outer ring fire of the burner is stable and uniform.

[0075] In this embodiment, the burner 1 is configured as a split structure, which facilitates the machining of the central mixing chamber 111 on the lower burner seat 11. Simultaneously, it also allows the outer ring guide chamber 121 on the upper burner cover 12 to be annular, and the central guide chamber 122 on the upper burner cover 12 to be cylindrical. Ultimately, this ensures the stability of the outer ring flame and the central flame of the burner.

[0076] In one embodiment, see Figure 4 and Figure 5 The inner wall of the central guide cavity 122 includes an inclined guide wall 1112, and the gas in the central mixing cavity 111 can flow along the inclined guide wall 1112 into the central guide cavity 122.

[0077] For example, Figure 5 The continuous lines with three guide arrows in the middle illustrate the flow path of gas from the central mixing chamber 111 to the central guide chamber 122.

[0078] The inclined guide wall 1112 guides the gas in the central mixing chamber 111 to flow in the central guide chamber 122 in an upward inclined direction. This arrangement can extend the flow path of the airflow, enhance the mutual collision of the airflow during the flow process, make the gas and air in the airflow mix more evenly, and ultimately improve the combustion efficiency of the burner.

[0079] See Figure 5 In one embodiment, the projections of the central mixing chamber 111 and the central guide chamber 122 are partially offset along the axial projection of the burner 1. This arrangement serves two purposes: firstly, it causes the airflow in the central mixing chamber 111 to tilt upwards, flowing into the central guide chamber 122 in an upward-tilting direction. This extends the airflow path, enhances collisions during flow, and results in a more uniform mixture of fuel gas and air, ultimately improving the burner's combustion efficiency. Secondly, the partial offset between the projections of the central mixing chamber 111 and the central guide chamber 122, meaning their projections partially overlap, avoids the problem of excessively large radial dimensions of the burner if they were completely misaligned.

[0080] Specifically, see Figures 4-9 In one embodiment, the two outer ring mixing chambers 112 are rotationally symmetrical about the center point of the burner 1. The burner also includes two outer ring ejector channels 6, which are arranged in a one-to-one correspondence with the outer ring mixing chambers 112. The airflow directions in the two outer ring ejector channels 6 are opposite.

[0081] Specifically, in this embodiment, the two outer ring mixing chambers 112 are symmetrical about the center point of the flame divider 1.

[0082] See Figure 4 The central mixing chamber 111 is located close to the center of the flame spreader 1. The two outer ring mixing chambers 112 are symmetrical about the center point of the flame spreader 1, and the airflow direction in the two outer ring ejector channels 6 is opposite. That is, the two outer ring ejector channels 6 are distributed in opposite directions. This arrangement makes the central air intake pressure and the outer ring air intake pressure of the burner uniform, thereby avoiding the problem of inconsistent central flame length and outer ring flame length of the burner.

[0083] Furthermore, in one embodiment, see [link to relevant documentation]. Figures 1-4 The burner also includes an inner ring burner cap 4, which can be installed on the burner distributor 1, and the central mixing chamber 111 can supply gas to the inner ring burner cap 4.

[0084] Specifically, the central mixing chamber 111 supplies gas to the inner ring flame cap 4 via the central guiding chamber 122. The central guiding chamber 122 is a cylindrical cavity, which makes the flame at the inner ring flame cap 4 stable and uniform.

[0085] Furthermore, in this embodiment, see Figure 10 and Figure 11 A first inner ring air supply structure 124 is provided on the upper cover 12 of the burner between the central guide cavity 122 and the outer ring guide cavity 121. A second inner ring air supply structure 123 is provided on the opposite sides of the upper cover 12 of the burner. The second inner ring air supply structure 123 is connected to the first inner ring air supply structure 124, so that air can be supplied to the first inner ring air supply structure 124. The air at the first inner ring air supply structure 124 can be directly supplied to the inner ring burner cap 4, which fully ensures the stable combustion of the flame at the inner ring burner cap 4.

[0086] More specifically, in this embodiment, the upper panel of the lower seat 11 of the fire distributor is a circular panel; the lower panel of the upper cover 12 of the fire distributor is a circular panel with notches on both sides, and the two notches on both sides are two second inner ring supply air intake structures 123.

[0087] The lower panel of the burner cover 12 is placed on the upper panel of the burner base 11. The diameter of the lower panel of the burner cover 12 is equal to the diameter of the upper panel of the burner base 11. The lower panel of the burner cover 12 has an annular protrusion facing upwards. An outer ring guide cavity 121 is formed inside the annular protrusion. The outer diameter of the annular protrusion is smaller than the diameter of the lower panel of the burner cover 12. Thus, the burner 1 has an overall shape that is larger at the bottom and smaller at the top. In the inner ring of the annular protrusion, the lower panel of the burner cover 12 has a columnar protrusion facing upwards. A central guide cavity 122 is formed inside the columnar protrusion.

[0088] Furthermore, the burner also includes an outer ring burner cap 5, which can be installed to the burner distributor 1, and the outer ring mixing chamber 112 can supply gas to the outer ring burner cap 5.

[0089] Specifically, the outer ring mixing chamber 112 supplies gas to the outer ring burner cap 5 via the outer ring guiding chamber 121. The outer ring guiding chamber 121 is circular, which ensures that the gas supply from the outer ring guiding chamber 121 to all parts of the outer ring burner cap 5 is uniform, thus ensuring that the flame at the outer ring burner cap 5 is stable and uniform.

[0090] In one embodiment, see Figure 5 , Figure 12 and Figure 13 The inner ring flame cover 4 includes an inner ring flame cover body 41, a separator 42, and an inner ring flame cover upper cover 43.

[0091] The inner ring flame cap body 41 includes an outer peripheral portion 411 arranged in a circle. The outer peripheral portion 411 is provided with a first inner ring flame cap hole 412. The outer peripheral portion 411 surrounds and forms an inner ring flame cap cavity 413. The central mixing cavity 111 can supply gas to the inner ring flame cap cavity 413.

[0092] The separator 42 is disposed within the inner ring flame cap cavity 413 and divides the inner ring flame cap cavity 413 into a first cavity 4131 and a second cavity 4132. The first cavity 4131 communicates with the first inner ring flame cap hole 412. Specifically, the separator 42 is integrally formed and disposed within the inner ring flame cap cavity 413.

[0093] The inner ring flame cap 43 is located at the upper opening of the cavity, and the inner ring flame cap 43 is provided with a second inner ring flame cap hole 431. The second cavity 4132 is connected to the second inner ring flame cap hole 431.

[0094] When the inner ring flame is required, the central mixing chamber 111 supplies gas to the inner ring flame cap cavity 413 via the central guiding chamber 122. The mixed gas entering the first cavity 4131 can flow to the first inner ring flame cap hole 412, and the mixed gas entering the second cavity 4132 can flow to the second inner ring flame cap hole 431, thereby ensuring the uniformity and stability of the flame at the inner ring flame cap 4.

[0095] With the above-described structure, the inner ring flame cap 4 has a smaller cross-sectional area due to the partition 42, which reduces or prevents backfire at the inner ring flame cap 4 and lowers the flameout noise at the inner ring flame cap 4.

[0096] Specifically, in this embodiment, the separator 42 includes a hollow cylindrical structure and an end connecting plate disposed at the upper end of the hollow cylindrical structure. The end connecting plate is annular and connects the hollow cylindrical structure and the inner side of the outer periphery 411.

[0097] The hollow cylindrical structure is coaxially arranged with the inner ring flame cap 4. The first inner ring flame cap hole 412 is located on the side of the outer peripheral portion 411 and faces the outer side of the hollow cylindrical structure. When the flame at the first inner ring flame cap hole 412 has a tendency to flashback, since the first inner ring flame cap hole 412 faces the outer side of the hollow cylindrical structure, the outer side of the hollow cylindrical structure can prevent or reduce flashback at the first inner ring flame cap hole 412.

[0098] Specifically, the inner side of the outer periphery 411 is provided with an overlapping step surface 4111 for overlapping the inner ring flame cap 43. The overlapping step surface 4111 is higher than the end connecting plate so that the inner ring flame cap 43 and the end connecting plate are spaced apart. The end connecting plate can reduce or prevent backfire at the second inner ring flame cap hole 431.

[0099] More specifically, in this embodiment, the inner ring flame cap 4 can be installed on the upper cover 12 of the flame distributor, and the central guide cavity 122 can supply gas to the inner ring flame cap 4.

[0100] The outer ring burner cap 5 can be installed on the burner cover 12 and is located on the outer ring of the inner ring burner cap 4. The outer ring guide cavity 121 can supply gas to the outer ring burner cap 5.

[0101] The central guide chamber 122 supplies gas to the inner ring burner 4, so that the gas mixture formed by the gas and air can burn at the inner ring burner 4 to form a central flame.

[0102] The outer ring guide cavity 121 supplies gas to the outer ring burner cap 5, so that the gas mixture formed by the gas and air can burn at the outer ring burner cap 5 to form an outer ring flame.

[0103] Further, see Figures 1-6 In one embodiment, the burner further includes a burner head 3, and a flame distributor 1 is installed on the burner head 3. One of the burner head 3 and the flame distributor 1 is provided with a positioning groove 31, and the other is provided with a positioning protrusion 113 that cooperates with the positioning groove 31.

[0104] The positioning protrusion 113 and positioning groove 31 ensure that the burner 1 is accurately positioned on the burner head 3. Once the burner 1 is installed on the burner head 3, it will not swing or shake.

[0105] Optionally, see Figure 8 and Figure 9 There are multiple positioning protrusions 113, and correspondingly, there are also multiple positioning grooves 31, with each positioning groove 31 and positioning protrusion 113 being set in a one-to-one correspondence. Alternatively, there may be two positioning grooves 31 and two positioning protrusions 113.

[0106] Optionally, the positioning protrusion 113 is square in shape.

[0107] Furthermore, a positioning protrusion 113 is provided on the lower surface of the burner lower seat 11, which is mounted on the burner head 3.

[0108] Furthermore, in one embodiment, the projection of the fire distributor 1 along its axial direction covers the projections of the inner ring ejector channel 2 and the outer ring ejector channel 6.

[0109] This configuration ensures good overall structural integrity of the burner. Generally, the longer the inner ring ejector channel 2, the stronger the ejection capacity and the better the performance. In this embodiment, the burner is a top-inlet burner. The projection of the flame distributor 1 covers the projections of both the inner ring ejector channel 2 and the outer ring ejector channel 6. This configuration allows the length of the inner ring ejector channel 2 to be greater than or equal to 65mm, and the length of the outer ring ejector channel 6 to be greater than or equal to 75mm, meeting the design requirements for the lengths of both the inner and outer ring ejector channels, thus ensuring the structural integrity and aesthetics of the burner.

[0110] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0111] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A burner, characterized in that, include: Flame distributor (1), wherein the flame distributor (1) is provided with a central mixing chamber (111) and a central guide chamber (122) that are interconnected, the central guide chamber (122) is located on the upper side of the central mixing chamber (111) and the two are offset along the first horizontal direction; The inner ring ejector channel (2) is connected to the side of the central mixing cavity (111). The outlet end of the inner ring ejector channel (2) is offset from the central guide cavity (122) along the second horizontal direction, and the first horizontal direction and the second horizontal direction are perpendicular to each other.

2. The burner according to claim 1, characterized in that, Projecting the central axis of the fire distributor (1) onto a horizontal plane, the distance between the projection of the center point of the outlet end face of the inner ring ejector channel (2) and the projection of the central axis of the fire distributor (1) on the horizontal plane is d1; the maximum distance between the projection of the inner side of the central mixing chamber (111) and the projection of the central axis of the fire distributor (1) along the radial direction of the fire distributor (1) is d2, where d1 is less than d2.

3. The burner according to claim 1, characterized in that, The fire distributor (1) includes: The lower seat of the ignition distributor (11) is provided with an outer ring mixing chamber (112) and a central mixing chamber (111); The upper cover (12) of the fire distributor is disposed on the lower seat (11) of the fire distributor. The upper cover (12) of the fire distributor is provided with an outer ring guide cavity (121) and a central guide cavity (122). The outer ring mixing cavity (112) and the outer ring guide cavity (121) are connected.

4. The burner according to claim 3, characterized in that, The inner wall of the central guide cavity (122) includes an inclined guide wall (1112), and the gas in the central mixing cavity (111) can flow along the inclined guide wall (1112) into the central guide cavity (122).

5. The burner according to claim 3, characterized in that, The projections of the central mixing chamber (111) and the central guide chamber (122) are partially misaligned along the axial projection of the fire distributor (1).

6. The burner according to claim 1, characterized in that, The cross-section of the central mixing chamber (111) is semi-circular.

7. The burner according to claim 1, characterized in that, The burner also includes a burner head (3), and the burner distributor (1) is installed on the burner head (3). One of the burner head (3) and the burner distributor (1) is provided with a positioning groove (31), and the other is provided with a positioning protrusion (113) that cooperates with the positioning groove (31).

8. The burner according to claim 1, characterized in that, The burner (1) is also provided with two outer ring mixing chambers (112). The two outer ring mixing chambers (112) are rotationally symmetrical with respect to the center point of the burner (1). The burner also includes two outer ring ejector channels (6). The outer ring ejector channels (6) are arranged one-to-one with the outer ring mixing chambers (112). The airflow directions in the two outer ring ejector channels (6) are opposite.

9. The burner according to claim 8, characterized in that, The projection of the fire distributor (1) along its axial direction covers the projections of the inner ring ejector channel (2) and the outer ring ejector channel (6).

10. A gas stove, including a control panel, characterized in that, The panel is equipped with a burner as described in any one of claims 1-9.

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