Combustor and gas stove

Abstract

The utility model belongs to the technical field of the range, specifically discloses a kind of burner and gas stove, the burner, including gas distribution disc and fire cover, the gas distribution disc has gas supply passage, and the gas distribution disc is equipped with multiple first gas outlet groove being communicated with the gas supply passage, multiple the first gas outlet groove is arranged at intervals around the central axis of the gas distribution disc, the fire cover is connected in the gas distribution disc, the fire cover is equipped with multiple fire hole, the fire hole is communicated with the first gas outlet groove one-to-one, and fire hole is located corresponding first gas outlet groove side away from central axis, the first gas outlet groove is formed gas outlet in the surface of the gas distribution disc towards the fire hole, the caliber of the gas outlet is greater than the aperture of the fire hole, the burner can effectively solve the problem that gas is poor in the communication position of fire hole and corresponding gas outlet groove due to assembly, manufacturing error, and the outflow of gas is smooth.

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] In related technologies, burners typically employ a separate burner cap and gas distribution plate structure to reduce costs and increase efficiency. This allows the burner cap to be made of thin stainless steel sheet with good high-temperature resistance, while the gas distribution plate is made of other materials (such as aluminum alloy) with poorer high-temperature resistance and lower cost. Simultaneously, to mitigate backfire issues, the gas distribution plate usually has a greater thickness, allowing for a longer gas outlet groove. This results in a longer flow path for the gas within the gas distribution plate, thereby extending the combustion path of the backfire flame and reducing the likelihood of the backfire flame burning into the gas supply channel of the gas distribution plate.

[0003] Because the burner cap and the gas distributor are separate structures, they need to be assembled to form a complete burner. In related technologies, due to assembly and manufacturing errors, the burner holes on the burner cap and the corresponding gas outlet slots on the gas distributor are often partially misaligned during assembly, resulting in poor gas flow at the connection point between the burner holes and the corresponding gas outlet slots. Utility Model Content

[0004] One of the technical problems solved by this utility model is to provide a burner that can effectively solve the problem of poor gas flow at the connection position between the flame hole and the corresponding gas outlet groove due to assembly and manufacturing errors.

[0005] The second technical problem solved by this utility model is to provide a gas stove that can effectively solve the problem of poor gas output smoothness.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A burner, comprising:

[0008] The air distribution plate has an air supply channel and a plurality of first air outlet slots communicating with the air supply channel, the plurality of first air outlet slots being arranged at intervals around the central axis of the air distribution plate; and,

[0009] The flame cap is fastened to the gas distribution plate. The flame cap has multiple flame holes, which are connected to the first gas outlet groove one by one, and the flame holes are located on the side of the corresponding first gas outlet groove away from the central axis.

[0010] The first vent groove forms an vent on the surface of the vent plate facing the flame hole, and the diameter of the vent is larger than the diameter of the flame hole.

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

[0012] By forming an air outlet on the surface of the gas distribution plate facing the flame hole with the first air outlet groove, and the diameter of the air outlet is larger than the diameter of the flame hole, a certain amount of redundant space can be formed at the air outlet. This avoids the air outlet and the flame hole being at least partially misaligned during assembly due to manufacturing and assembly errors, thus ensuring that the function of supplying air to the flame hole through the first air outlet groove is better and more stable.

[0013] Furthermore, it can also make the solid structure of the gas distribution plate staggered from the flame holes. In other words, it can make the solid structure of the gas distribution plate separated from the flame holes by a certain distance, thereby reducing the possibility that the solid structure of the gas distribution plate will deform due to direct contact with the high-temperature area formed near the flame holes.

[0014] In one embodiment, along the direction surrounding the central axis, the air distribution plate is further provided with a plurality of second air outlet slots communicating with the air supply channel. The plurality of second air outlet slots are arranged at intervals around the central axis, and all the second air outlet slots are located at intervals on the same side of all the first air outlet slots along the extension direction of the central axis.

[0015] The flame cap is also provided with a plurality of flame stabilizing holes, all of which are located on the same side of all the flame holes along the extension direction of the central axis, and the flame stabilizing holes are connected to the second gas outlet groove.

[0016] In one embodiment, the second vent groove has an arc dimension d along the direction surrounding the central axis, and the arc dimension d of the second vent groove gradually increases from the side of the second vent groove closer to the central axis to the side of the second vent groove farther from the central axis.

[0017] In one embodiment, along the direction surrounding the central axis, the second vent groove has two opposing sidewalls, which are concave arc surfaces.

[0018] In one embodiment, the outer peripheral surface of the air distribution plate is further provided with a first annular groove surrounding the central axis, the first annular groove being connected to all the second air outlet grooves, and all the flame stabilizing holes being connected to the first annular groove.

[0019] In one embodiment, along the extension direction of the central axis, the first annular groove has a height dimension h1, the second vent groove has a height dimension h2, and the flame stabilizing hole has a height dimension h3, where h1 > h2 and h1 > h3.

[0020] In one embodiment, 1.6mm ≤ h1 ≤ 2.4mm; and / or,

[0021] 0.8mm≤h2≤1.5mm; and / or,

[0022] 0.8mm≤h3≤1.2mm; and / or,

[0023] h2 > h3.

[0024] In one embodiment, the flame stabilizing hole is a strip-shaped hole extending along the direction surrounding the central axis, and multiple flame holes are distributed on one side of any one of the flame stabilizing holes along the extension direction of the central axis.

[0025] In one embodiment, a partition is formed between the first vent groove and the second vent groove to make the first vent groove and the second vent groove independent of each other, and at least a portion of the structure of the flame cap located between the flame hole and the flame stabilizing hole abuts against the partition.

[0026] In one embodiment, the side of the first vent groove away from the central axis and the side of the first vent groove close to the central axis both extend through the surface of the gas distribution plate, and the burner cap abuts against at least a portion of the outer peripheral surface of the gas distribution plate where the first vent groove is provided, so that each of the first vent grooves is independent.

[0027] In one embodiment, the first vent groove extends through the surface of the air distribution plate on both the side away from the central axis and the side close to the central axis, and the first vent groove also extends through the upper end face of the air distribution plate. The burner cap abuts against the upper end face of the air distribution plate, so that each of the first vent grooves is independent; and / or,

[0028] The first air outlet groove includes a first section and a second section that are connected to each other. The end of the first section away from the second section is connected to the air supply channel, and the end of the second section away from the first section is connected to the fire hole. Along the direction perpendicular to the extension direction of the first air outlet groove and the central axis, the first section has a width c1, and the second section has a width c2, where c2 > c1.

[0029] In one embodiment, the first air outlet groove includes a first segment and a second segment that are connected to each other. The end of the first segment away from the second segment is connected to the air supply channel, and the end of the second segment away from the first segment is connected to the flame hole. Along the direction perpendicular to the extension direction of the first air outlet groove and the central axis, the first segment has a width c1, the second segment has a width c2, c2 > c1, and the minimum value of the width c1, c1 min, satisfies: 1mm ≤ c1 min ≤ 2.5mm.

[0030] In one embodiment, one end face of the gas distribution plate is connected to the outer peripheral surface of the gas distribution plate via an inclined surface, the first gas outlet groove at least extends through the inclined surface, one end of the burner cap is connected to the outer periphery of the burner cap via an inclined portion, one side of the inclined portion can abut against the inclined surface, and the flame hole is provided in the inclined portion; and / or,

[0031] The outer periphery of the gas distribution plate is provided with a second annular groove. Along the extension direction of the central axis, the second annular groove is located on the side of the first gas outlet groove near the edge of the flame cap. The flame cap is provided with a locking protrusion, which engages with the second annular groove.

[0032] The second technical problem mentioned above is solved by the following technical solution:

[0033] A gas stove includes at least one burner as described in the foregoing technical solutions.

[0034] The gas stove described in this utility model has the following advantages compared with the prior art:

[0035] By using the aforementioned technical solution, a burner with good and stable gas supply function through the first gas outlet groove to the flame hole can be used to ensure smooth gas output. Attached Figure Description

[0036] Figure 1 A three-dimensional structural schematic diagram of the burner provided in an embodiment of this utility model;

[0037] Figure 2 for Figure 1 An exploded view of the burner shown in the diagram;

[0038] Figure 3 for Figure 2 Enlarged view of point K;

[0039] Figure 4 for Figure 2 Enlarged view of point L in the middle;

[0040] Figure 5 for Figure 1 A schematic cross-sectional view of the burner shown in one direction;

[0041] Figure 6 for Figure 1 A cross-sectional view of the burner shown in the diagram along another direction;

[0042] Figure 7 for Figure 6 Enlarged view of point M in the middle;

[0043] Label Explanation:

[0044] 1. Air distribution plate; 1a. Central axis; 1b. Inclined surface; 1c. Partition; 10. Air supply channel; 11. First air outlet groove; 111. First section; 112. Second section; 113. Air outlet; 12. Second air outlet groove; 120. Side wall surface; 13. First annular groove; 14. Second annular groove;

[0045] 2. Flame cap; 20. Flame hole; 21. Flame stabilizing hole; 22. Inclined part; 23. Protrusion; 2a. Top wall; 2b. Inner wall; 2c. Outer wall. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] like Figures 1 to 4As shown, this embodiment proposes a burner, including a gas distribution plate 1 and a burner cap 2. The gas distribution plate 1 has a gas supply channel 10 and a plurality of first gas outlet grooves 11 connected to the gas supply channel 10. The plurality of first gas outlet grooves 11 are arranged at intervals around the central axis 1a of the gas distribution plate 1. The burner cap 2 is fastened to the gas distribution plate 1 and has a plurality of flame holes 20. When the burner cap 2 is assembled with the gas distribution plate 1, the flame holes 20 are connected to the first gas outlet grooves 11 in a one-to-one correspondence, and the flame holes 20 are located on the side of the corresponding first gas outlet groove 11 away from the central axis 1a. The first gas outlet groove 11 forms an outlet 113 on the surface of the gas distribution plate 1 facing the flame hole 20. The diameter of the outlet 113 is larger than the diameter of the flame hole 20.

[0051] By forming an air outlet 113 on the surface of the air distribution plate 1 facing the flame hole 20 through the first air outlet groove 11, the diameter of the air outlet 113 is larger than the diameter of the flame hole 20, thereby enabling the air outlet 113 to form a certain amount of redundant space. This avoids the air outlet 113 from being at least partially misaligned with the flame hole 20 during assembly due to manufacturing or assembly errors, thus ensuring that the function of supplying air to the flame hole 20 through the first air outlet groove 11 is better and more stable.

[0052] Furthermore, it can also make the solid structure of the gas distribution plate 1 offset from the flame hole 20. In other words, it can make the solid structure of the gas distribution plate 1 and the flame hole 20 separated by a certain distance, thereby reducing the possibility that the solid structure of the gas distribution plate 1 will deform due to direct contact with the high temperature area formed near the flame hole 20.

[0053] In one embodiment, the side of the first gas outlet groove 11 away from the central axis 1a and the side of the first gas outlet groove 1a both extend through the surface of the gas distribution plate 1. When the burner cap 2 is assembled with the gas distribution plate 1, the burner cap 2 abuts against at least a portion of the outer peripheral surface of the gas distribution plate 1 where the first gas outlet groove 11 is provided, so that each first gas outlet groove 11 is independent, thereby preventing the gas from flowing between the burner cap 2 and the outer peripheral surface of the gas distribution plate 1, and improving the controllability of the gas flow path.

[0054] In one embodiment, the flame hole 20 may be, but is not limited to, a circular hole, an oblong hole, or a square hole. Preferably, the flame hole 20 may be a circular hole, so that the shape of the flame hole 20 is more conducive to concentrating the flame generated by combustion, and is suitable for the burner to generate a main combustion flame with a higher temperature and more stable temperature.

[0055] In one embodiment, the gas distribution plate 1 is further provided with a plurality of second gas outlet slots 12 connected to the gas supply channel 10. The plurality of second gas outlet slots 12 are arranged at intervals around the central axis 1a, and all the second gas outlet slots 12 are located at intervals on the same side of all the first gas outlet slots 11 along the extension direction of the central axis 1a. The flame cap 2 is further provided with a plurality of flame stabilizing holes 21. Flame holes 20 are correspondingly distributed on one side of the flame stabilizing holes 21 along the extension direction of the central axis 1a. The flame stabilizing holes 21 are connected to the second gas outlet slots 12.

[0056] By including a second gas outlet groove 12 in the gas distribution plate 1 and a flame stabilizing hole 21 in the burner cap 2, and by positioning all the second gas outlet grooves 12 at intervals on the same side of all the first gas outlet grooves 11 along the extension direction of the central axis 1a, when the burner is in use, gas can be supplied through the second gas outlet grooves 12 and the flame stabilizing hole 21 to form a flame, thereby heating the vicinity of the flame hole 20 located on one side of the flame stabilizing hole 21 along the extension direction of the central axis 1a. This ensures that the gas output from the flame hole 20 can be continuously ignited, preventing impurities from entering the first gas outlet groove 11 and the flame hole 20 during use, which would result in poor gas flow at some flame holes 20 and cause the flame at some flame holes 20 to be easily extinguished. This improves the combustion flame stability of the burner.

[0057] Please combine Figure 7 As shown, in one embodiment, a partition 1c is formed between the first gas outlet groove 11 and the second gas outlet groove 12 to make the first gas outlet groove 11 and the second gas outlet groove 12 independent of each other. When the burner cap 2 is assembled with the gas distribution plate 1, at least a portion of the structure of the burner cap 2 located between the flame hole 20 and the flame stabilizing hole 21 abuts against the partition 1c, so that the connected flame hole 20 and the first gas outlet groove 11 are independent of the connected flame stabilizing hole 21 and the second gas outlet groove 12. This prevents the gas from flowing between the first gas outlet groove 11, the second gas outlet groove 12, the flame hole 20, and the flame stabilizing hole 21 through the gap between the outer peripheral surface of the burner cap 2 and the gas distribution plate 1. This makes the main combustion gas supply and flame stabilizing combustion gas supply functions of the flame hole 20 and the first gas outlet groove 11 independent of the flame stabilizing hole 21 and the second gas outlet groove 12, respectively. This avoids the interference between the two different functions, improves the controllability of the two different functions, and makes the main combustion function and flame stabilizing combustion function of the burner more stable.

[0058] In one embodiment, flame holes 20 are distributed on one side of the flame stabilizing hole 21 along the extension direction of the central axis 1a, so that the flame generated at the flame stabilizing hole 21 can be aligned with the corresponding flame hole 20 for heating, making the flame stabilizing effect of the flame generated at the flame stabilizing hole 21 on the flame at the flame hole 20 more stable.

[0059] In one embodiment, the flame stabilizing hole 21 is a strip-shaped hole extending along the direction surrounding the central axis 1a. Multiple flame holes 20 are distributed on one side of any flame stabilizing hole 21 along the extension direction of the central axis 1a. By forming the flame stabilizing hole 21 into a strip-shaped hole, the opening area of ​​the flame stabilizing hole 21 is larger. This makes it possible for even if some debris accumulates inside the flame stabilizing hole 21, its impact on the smoothness of the gas output at the flame stabilizing hole 21 is small. This is beneficial to make the flame output from the flame stabilizing hole 21 more stable, and thus can stably heat the vicinity of the correspondingly distributed multiple flame holes 20.

[0060] Furthermore, multiple flame holes 20 are distributed on one side of a flame stabilizing hole 21 along the extension direction of the central axis 1a. In other words, the opening size of the flame holes 20 is smaller than that of the flame stabilizing hole 21, which makes the ratio of the edge area to the perimeter of the flame holes 20 larger. This makes it easier for the gas output from the flame holes 20 to come into more complete contact and mix with oxygen, thereby making it easier for the gas output from the flame holes 20 to burn more completely and the flame output from the flame holes 20 to be greater.

[0061] In other embodiments, the flame stabilizing holes 21 may also be distributed in a one-to-one correspondence with the flame holes 20. In addition, some flame holes 20 may not be distributed in correspondence with the flame stabilizing holes 21, that is, some flame holes 20 may be at least partially offset from the flame stabilizing holes 21 along the direction surrounding the central axis 1a.

[0062] Please combine Figure 5 As shown, in one embodiment, along the direction surrounding the central axis 1a, the second gas outlet groove 12 has an arc dimension d. From the side of the second gas outlet groove 12 closer to the central axis 1a to the side of the second gas outlet groove 12 farther away from the central axis 1a, the arc dimension d of the second gas outlet groove 12 gradually increases. This results in, on the one hand, a larger flow path in the second gas outlet groove 12 as it moves further away from the central axis 1a, which slows down the flow rate of the gas and reduces the gas consumption rate at the flame stabilizing hole 21. On the other hand, since the space available for the second gas outlet groove 12 is larger as the gas distribution plate 1 moves further away from the central axis 1a, this arrangement also makes the structure of the second gas outlet groove 12 more reasonable.

[0063] In one embodiment, the air distribution plate 1 can be cut from the outer periphery of the air distribution plate 1 by a circular blade to form a second air outlet groove 12 with a larger arc dimension d the further away from the central axis 1a by a simple process. At this time, the second air outlet groove 12 has two opposing side wall surfaces 120 along the direction surrounding the central axis 1a. The side wall surfaces 120 are concave arc surfaces.

[0064] In one embodiment, the flame stabilizing hole 21 and the second gas outlet groove 12 can be connected one-to-one, or one second gas outlet groove 12 can be connected to multiple flame stabilizing holes 21 at the same time, which is beneficial to make the flame output from multiple flame stabilizing holes 21 more consistent.

[0065] In one embodiment, the outer peripheral surface of the gas distribution plate 1 is also provided with a first annular groove 13 surrounding the central axis 1a. The first annular groove 13 is connected to all the second gas outlet grooves 12, and all the flame stabilizing holes 21 are connected to the first annular groove 13. This allows the gas output from all the second gas outlet grooves 12 to circulate with each other in the first annular groove 13, which is beneficial to maintaining a stable gas supply to all the flame stabilizing holes 21, so as to maintain the flame stability output at the flame stabilizing holes 21.

[0066] Please combine Figure 6 and Figure 7 As shown, in one embodiment, along the extension direction of the central axis 1a, the first annular groove 13 has a height dimension h1, and the second gas outlet groove 12 has a height dimension h2, where h1 > h2. This allows the first annular groove 13 to form a certain redundant space along the extension direction of the central axis 1a, avoiding the situation where the second gas outlet groove 12 and the first annular groove 13 are partially misaligned along the extension direction of the central axis 1a due to manufacturing errors. This effectively ensures the smooth flow of gas from the second gas outlet groove 12 to the first annular groove 13.

[0067] To maximize the space within the first annular groove 13 and facilitate the flow of gas within it, thereby ensuring more uniform gas distribution at different locations, the height h1 of the first annular groove 13 can be relatively large. However, an excessively large height h1 would result in an excessively large footprint. Therefore, the height h1 cannot be too large. Optionally, the height h1 of the first annular groove 13 can satisfy the following condition: 1.6mm ≤ h1 ≤ 2.4mm. For example, the height h1 of the first annular groove 13 can be 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, or 2.4mm, etc.

[0068] To increase the flow path of the second exhaust groove 12 and thus maximize the maximum firepower output at the burner hole 20, the height h2 of the second exhaust groove 12 can be relatively large. However, an excessively large height h2 will result in an excessively large ratio of edge to perimeter area, making it difficult for the combustion gas output from the burner hole 20 to fully contact and mix with oxygen. Furthermore, it will also lead to an excessively large installation space occupied by the second exhaust groove 12 along the extension direction of the central axis 1a. Therefore, the height h2 of the second exhaust groove 12... The height dimension h2 should not be too large. Based on this, in one embodiment, the height dimension h2 of the second air outlet groove 12 can satisfy: 0.8mm≤h2≤1.5mm. For example, the height dimension h2 of the second air outlet groove 12 can be 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1mm, 1.05mm, 1.1mm, 1.15mm, 1.2mm, 1.25mm, 1.3mm, 1.35mm, 1.4mm, 1.45mm or 1.5mm, etc.

[0069] In one embodiment, the flame stabilizing hole 21 has a height dimension h3 along the extension direction of the central axis 1a, where h1 > h3. This allows the first annular groove 13 to form a certain redundant space along the extension direction of the central axis 1a, preventing the flame stabilizing hole 21 from being misaligned with the first annular groove 13 during assembly due to manufacturing or assembly errors. This ensures that the function of supplying air to the flame stabilizing hole 21 through the first annular groove 13 is better and more stable. On the other hand, it allows the solid structure of the air distribution plate 1 to be misaligned with the flame stabilizing hole 21. In other words, it allows a certain distance to be separated between the solid structure of the air distribution plate 1 and the flame stabilizing hole 21, thereby reducing the possibility of deformation caused by the solid structure of the air distribution plate 1 directly contacting the high-temperature area formed near the flame stabilizing hole 21.

[0070] To reduce gas consumption at the flame stabilizing hole 21 and thus lower burner energy consumption, the height h3 of the flame stabilizing hole 21 can be relatively small. However, if the height h3 is too small, the flame formed at the flame stabilizing hole 21 will be too small and its stability will decrease, resulting in poor flame stabilization at the flame stabilizing hole 21. Therefore, the height h3 of the flame stabilizing hole 21 cannot be too small. Based on this, the height h3 of the flame stabilizing hole 21 can optionally satisfy: 0.8mm≤h3≤1.2mm. For example, the height h3 of the flame stabilizing hole 21 can be 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1mm, 1.05mm, 1.1mm, 1.15mm, or 1.2mm, etc.

[0071] In one embodiment, the height dimension h2 of the second exhaust groove 12 and the height dimension h3 of the flame stabilizing hole 21 satisfy: h2 > h3, thereby enabling the flow path of the second exhaust groove 12 to be larger, so that the gas supply capacity of the second exhaust groove 12 can more easily meet the combustion requirements at the flame stabilizing hole 21.

[0072] It is understandable that when the first annular groove 13 is not provided on the gas distribution plate 1, that is, when the second gas outlet groove 12 is directly connected to the flame stabilizing hole 21, by making the height dimension h2 of the second gas outlet groove 12 and the height dimension h3 of the flame stabilizing hole 21 satisfy: h2>h3, the solid structure of the gas distribution plate 1 can be offset from the flame stabilizing hole 21, thereby reducing the possibility of deformation caused by the solid structure of the gas distribution plate 1 directly contacting the high temperature area formed near the flame stabilizing hole 21.

[0073] In one embodiment, the first vent groove 11 also extends through the upper end face of the gas distribution plate 1. That is, one side of the first vent groove 11 extends through the end face of the gas distribution plate 1, while the side of the first vent groove 11 away from the second vent groove 12 extends through the end face of the gas distribution plate 1. This allows the solid structure at the end of the gas distribution plate 1 to avoid the high-temperature area formed near the flame hole 20, thereby reducing the possibility that the solid structure of the gas distribution plate 1 will deform due to direct contact with the high-temperature area formed near the flame stabilizing hole 21. On the other hand, this structure is also easier to manufacture through casting, cutting and other processes, which can reduce the molding difficulty of the first vent groove 11 and thus reduce the manufacturing cost of the gas distribution plate 1.

[0074] In one embodiment, when the burner cap 2 is assembled with the gas distribution plate 1, the burner cap 2 abuts against the upper end surface of the gas distribution plate 1 so that each first gas outlet groove 11 is independent, thereby preventing the gas from flowing between the outer peripheral surface of the burner cap 2 and the gas distribution plate 1 and improving the controllability of the gas flow path.

[0075] Please see again. Figures 2 to 4 In one embodiment, the first air outlet groove 11 includes a first segment 111 and a second segment 112 that are connected. The end of the first segment 111 away from the second segment 112 is connected to the air supply channel 10, and the end of the second segment 112 away from the first segment 111 is connected to the flame hole 20. Along the direction perpendicular to the extension direction of the first air outlet groove 11 and the central axis 1a, the first segment 111 has a width c1, and the second segment 112 has a width c2, where c2 > c1. Since the space available for the gas distribution plate 1 is larger as it is further away from the central axis 1a and closer to the flame hole 20, this arrangement makes the structure of the first air outlet groove 11 more reasonable.

[0076] In one embodiment, the minimum width of the narrowest part of the first segment 111 is c1 min, that is, the minimum value of the width c1 is c1 min. In order to make the flow path of the first air outlet groove 11 larger and to make the air supply of the first air outlet groove 11 smoother, the minimum width c1 min needs to be larger. However, if the minimum width c1 min is too large, it will cause the first air outlet groove 11 to occupy too much space on the air distribution plate 1. Therefore, the minimum width c1 min cannot be too large. Based on this, in one embodiment, the minimum width c1 min can satisfy: 1mm≤c1 min≤2.5mm. For example, the minimum width c1 min can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm or 2.5mm, etc.

[0077] Understandably, when the first air outlet groove 11 includes a first segment 111 and a second segment 112 that are connected, the minimum width of the second segment 112 is the minimum width c1 min.

[0078] It is understandable that in the aforementioned technical solution, the first air outlet groove 11 includes a first segment 111 and a second segment 112 that are connected, and the width c1 of the first segment 111 and the width c2 of the second segment 112 satisfy: c2 > c1. This is beneficial to make the diameter of the air outlet 113 formed on the surface of the air distribution plate 1 facing the flame hole 20 (i.e., the air outlet 113 formed on the surface of the air distribution plate 1 facing the flame hole 20 by the second segment 112) larger. This makes it easier to make the diameter of the air outlet 113 larger than the diameter of the flame hole 20 without making the diameter of the flame hole 20 too small, which would result in insufficient firepower output.

[0079] In one embodiment, one end face of the gas distribution plate 1 is connected to the outer peripheral surface of the gas distribution plate 1 via an inclined surface 1b. The first gas outlet groove 11 extends through the inclined surface 1b at least. One end of the burner cap 2 is connected to the outer peripheral surface of the burner cap 2 via an inclined portion 22. One side of the inclined portion 22 can abut against the inclined surface 1b. The flame hole 20 is provided on the inclined portion 22, so that one side of the flame hole 20 can be tilted towards one side along the extension direction of the central axis 1a. Since the central axis 1a of the burner is usually set perpendicular to the direction of gravity, and the flame formed by the combustion of gas is usually vertically upward under the action of gravity, this can help to make the orientation of the flame hole 20 more suitable for forming a stable vertically upward flame. At the same time, it can also make the flame hole 20 still tilted towards the outer peripheral side of the gas distribution plate 1, so as to help the flame at the flame stabilizing hole 21 heat the environment around the flame hole 20, making it easier for the gas output from the flame hole 20 to be continuously ignited.

[0080] Please combine Figure 7 As shown, in one embodiment, the outer periphery of the gas distribution plate 1 is provided with a second annular groove 14. Along the extension direction of the central axis 1a, the second annular groove 14 is located on the side of the first gas outlet groove 11 near the edge of the burner cap 2. The burner cap 2 is provided with a locking protrusion 23, which engages with the second annular groove 14, thereby enabling the connection stability between the burner cap 2 and the gas distribution plate 1 to be better.

[0081] It is understandable that when the air distribution plate 1 is further provided with a second air outlet groove 12 as described in the aforementioned technical solution, the second air outlet groove 12 is located on the side away from the first air outlet groove 11.

[0082] In one embodiment, the locking protrusion 23 can be an annular locking protrusion arranged around the central axis 1a. Specifically, after the burner cap 2 is fastened to the gas distribution plate 1, the portion of the burner cap 2 corresponding to the second annular groove 14 can be contracted to form an annular locking protrusion that engages with the second annular groove 14, thereby achieving a stable connection between the burner cap 2 and the gas distribution plate 1.

[0083] In one embodiment, the flame cap 2 includes a top wall 2a, an inner wall 2b, and an outer wall 2c. The top wall 2a is an annular thin-walled structure, and the inner wall 2b and the outer wall 2c are both generally cylindrical thin-walled structures. The inner wall 2b is connected to the inner edge of the top wall 2a, and the outer wall 2c is connected to the outer edge of the top wall 2a. The outer wall 2c is spaced around the outer periphery of the inner wall 2b. When the flame cap 2 is assembled with the gas distribution plate 1, the outer wall 2c can cover at least part of the outer peripheral wall surface of the gas distribution plate 1, and the inner wall 2b can cover at least part of the inner wall 2b surface of the gas distribution plate 1. The top wall 2a and the inner wall 2b together cover the gas supply channel 10 of the gas distribution plate 1, and the flame hole 20 is provided on the outer wall 2c.

[0084] When the air distribution plate 1 described in the aforementioned technical solution is further provided with a second air outlet groove 12, the second air outlet groove 12 is provided on the outer side wall 2c.

[0085] When the air distribution plate 1 as described in the aforementioned technical solution is further provided with a retaining protrusion 23, the outer wall 2c portion is formed as the retaining protrusion 23. For example, as shown in the figure... Figure 7 As shown, Figure 7 The edge portion of the outer wall 2c on the side away from the fire cap 2 is shown to be formed as a mortise 23.

[0086] This embodiment also proposes a gas stove, including at least one burner as described in the foregoing technical solution. By using the burner with good combustion flame stability as described in the foregoing technical solution, the gas stove can output a more stable combustion flame.

[0087] 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.

[0088] 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 by Comprise: A gas distribution disc (1) having a gas supply channel (10), and a plurality of first gas outlet grooves (11) are arranged on the gas distribution disc (1) and communicated with the gas supply channel (10), and the first gas outlet grooves (11) are arranged around the central axis (1a) of the gas distribution disc (1) at intervals; and A fire cover (2) is connected to the gas distribution disc (1) by snap-fit, and the fire cover (2) is provided with a plurality of fire holes (20) corresponding to the first gas outlet grooves (11) and communicated therewith, and the fire holes (20) are located on the side of the corresponding first gas outlet grooves (11) away from the central axis (1a). The first gas outlet groove (11) forms a gas outlet (113) on the surface of the gas distribution disc (1) facing the fire hole (20), and the caliber of the gas outlet (113) is larger than the caliber of the fire hole (20).

2. The burner of claim 1, wherein The gas distribution disc (1) is also provided with a plurality of second gas outlet grooves (12) communicated with the gas supply channel (10), and the second gas outlet grooves (12) are arranged around the central axis (1a) at intervals, and all the second gas outlet grooves (12) are arranged on the same side of all the first gas outlet grooves (11) along the extension direction of the central axis (1a). The fire cover (2) is also provided with a plurality of flame stabilizing holes (21), and all the flame stabilizing holes (21) are located on the same side of all the fire holes (20) along the extension direction of the central axis (1a), and the flame stabilizing holes (21) are communicated with the second gas outlet grooves (12).

3. The burner of claim 2, wherein In the direction around the central axis (1a), the second gas outlet groove (12) has a circular arc size d, and the circular arc size d of the second gas outlet groove (12) gradually increases from the side of the second gas outlet groove (12) close to the central axis (1a) to the side of the second gas outlet groove (12) away from the central axis (1a).

4. The burner of claim 3, wherein In the direction around the central axis (1a), the second gas outlet groove (12) has two opposite side wall surfaces (120), and the side wall surfaces (120) are concave arc surfaces.

5. The burner of claim 2, wherein The outer peripheral surface of the gas distribution disc (1) is also provided with a first annular groove (13) around the central axis (1a), and the first annular groove (13) is communicated with all the second gas outlet grooves (12), and all the flame stabilizing holes (21) are communicated with the first annular groove (13).

6. The burner of claim 5, wherein In the extension direction of the central axis (1a), the first annular groove (13) has a height size h1, the second gas outlet groove (12) has a height size h2, and the flame stabilizing hole (21) has a height size h3, h1>h2, and h1>h3.

7. The burner of claim 6, wherein 1.6mm≤h1≤2.4mm; and / or, 0.8mm≤h2≤1.5mm; and / or, 0.8mm≤h3≤1.2mm; and / or, h2>h3.

8. Burner according to any of claims 2-6, characterized in that The flame stabilizing hole (21) is a strip hole extending along a direction around the central axis (1a), and a side of any one of the flame stabilizing holes (21) in the extension direction of the central axis (1a) corresponds to a distribution of a plurality of the fire holes (20).

9. Burner according to any of claims 2-6, characterized in that The first gas outlet groove (11) and the second gas outlet groove (12) form a blocking part (1c) to make the first gas outlet groove (11) and the second gas outlet groove (12) independent of each other, and at least part of the structure of the fire cover (2) between the fire hole (20) and the flame stabilizing hole (21) abuts against the blocking part (1c).

10. Burner according to any of claims 1-6, characterized in that The first gas outlet groove (11) is through the surface of the gas distribution disc (1) on the side away from the central axis (1a) and the side close to the central axis (1a), and the fire cover (2) abuts against at least part of the outer circumferential surface of the gas distribution disc (1) where the first gas outlet groove (11) is arranged, so that each first gas outlet groove (11) is independent.

11. Burner according to any of claims 1-6, characterized in that The first gas outlet groove (11) is through the surface of the gas distribution disc (1) on the side away from the central axis (1a) and the side close to the central axis (1a), and the first gas outlet groove (11) is also through the upper end surface of the gas distribution disc (1), and the fire cover (2) abuts against the upper end surface of the gas distribution disc (1), so that each first gas outlet groove (11) is independent; and / or, The first gas outlet groove (11) includes a first section (111) and a second section (112) in communication, one end of the first section (111) away from the second section (112) is communicated with the gas supply channel (10), one end of the second section (112) away from the first section (111) is communicated with the fire hole (20), along the direction perpendicular to the extension direction of the first gas outlet groove (11) and the central axis (1a), the first section (111) has a width c1, and the second section (112) has a width c2, c2>c1.

12. Burner according to any of claims 1-6, characterized in that The first gas outlet groove (11) includes a first section (111) and a second section (112) in communication, one end of the first section (111) away from the second section (112) is communicated with the gas supply channel (10), one end of the second section (112) away from the first section (111) is communicated with the fire hole (20), along the direction perpendicular to the extension direction of the first gas outlet groove (11) and the central axis (1a), the first section (111) has a width c1, and the second section (112) has a width c2, c2>c1, and the minimum value c1min of the width c1 satisfies: 1mm≤c1min≤2.5mm.

13. Burner according to any of claims 1-6, characterized in that One end surface of the gas distribution disc (1) is connected to the outer peripheral surface of the gas distribution disc (1) through a slope (1b), the first gas outlet groove (11) penetrates at least the slope (1b), one end of the fire cover (2) is connected to the outer peripheral surface of the fire cover (2) through an inclined portion (22), one side of the inclined portion (22) can abut against the slope (1b), and the fire hole (20) is arranged on the inclined portion (22); and / or, The outer peripheral surface of the gas distribution disc (1) is provided with a second annular groove (14), along the extension direction of the central axis (1a), the second annular groove (14) is located on the side of the edge of the first gas outlet groove (11) close to the fire cover (2), the fire cover (2) is provided with a clamping protrusion (23), and the clamping protrusion (23) is clamped in the second annular groove (14).

14. A gas hob, characterized in that A burner comprising at least one burner according to any one of claims 1 to 13.

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