Combustor and gas stove

Abstract

This utility model discloses a burner and a gas stove. The burner includes a flame distributor, which includes a flame distributor body. A high-intensity flame ejector and a middle-ring flame ejector are disposed on the lower side of the flame distributor body. A high-intensity flame outlet channel and a middle-ring flame outlet channel located outside the high-intensity flame outlet channel are disposed on the upper side of the flame distributor body. The outlet end of the high-intensity flame ejector is connected to the high-intensity flame outlet channel, and the outlet end of the middle-ring flame ejector is connected to the middle-ring flame outlet channel. The central axis of the high-intensity flame ejector is offset from the central axis of the high-intensity flame outlet channel by a distance L1, where L1 > 0 mm. The inner burner cap includes an inner burner cap body. A high-intensity flame hole is opened on the upper side of the inner burner cap body, and a middle-ring flame hole is opened on the periphery of the inner burner cap body. A high-intensity flame gas chamber and a middle-ring gas chamber located outside the high-intensity flame gas chamber are opened on the lower part of the inner burner cap body. The high-intensity flame gas chamber is connected to the high-intensity flame hole, and the middle-ring gas chamber is connected to the middle-ring flame hole.

Description

Technical Field

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

[0002] Existing top-intake burners typically have nozzles externally mounted on the cooktop surface, with the ejector hidden under the burner's flame distributor. The ejector's structure is limited, preventing it from being too long, resulting in a lower primary air coefficient and making it easy for CO content in the flue gas to exceed the standard.

[0003] Therefore, there is an urgent need for a flame spreader to solve the above problems. Utility Model Content

[0004] This invention aims to at least partially solve one of the problems existing in the prior art. To this end, this invention proposes a burner with high uniformity of air and gas mixing, thereby improving the primary air coefficient, increasing combustion efficiency, and reducing the CO content in the flue gas produced by combustion.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A burner, comprising:

[0007] The flame distributor includes a flame distributor body. A frying fire ejector and a middle ring fire ejector are provided on the lower side of the flame distributor body. A frying fire exhaust channel and a middle ring fire exhaust channel located outside the frying fire exhaust channel are provided on the upper side of the flame distributor body. The exhaust end of the frying fire ejector is connected to the frying fire exhaust channel. The exhaust end of the middle ring fire ejector is connected to the middle ring fire exhaust channel. The central axis of the frying fire ejector is offset from the central axis of the frying fire exhaust channel by a distance L1, where L1 > 0 mm.

[0008] An inner burner cap includes an inner burner cap body. The upper side of the inner burner cap body has a frying flame hole, and the periphery of the inner burner cap body has a central ring flame hole. The lower part of the inner burner cap body has a frying gas chamber and a central ring gas chamber located outside the frying gas chamber. The frying gas chamber communicates with the frying flame hole, and the central ring gas chamber communicates with the central ring flame hole. The inner burner cap body covers the upper side of the frying flame outlet channel and the central ring flame outlet channel. The frying flame outlet channel communicates with the frying gas chamber to form a frying gas channel, and the central ring flame outlet channel communicates with the central ring gas chamber to form a central ring gas channel.

[0009] Optionally, a guide vane is provided in the gas outlet channel of the stir-fry fire, and the guide vane is located in front of the gas flow direction of the stir-fry fire ejector.

[0010] Optionally, a flow divider is provided inside the stir-frying gas chamber. The flow divider has a main gas passage and a gas diversion passage. The main gas passage is located in the middle of the flow divider, and the gas diversion passage is located outside the main gas passage. The area of ​​the main gas passage is S1, and the area of ​​the gas diversion passage is S2, where S1 > S2. The guide vane, the stir-frying flame ejector, and the inner wall of the stir-frying flame outlet channel form a buffer chamber. The gas diversion passage is located above the buffer chamber.

[0011] Optionally, multiple gas diversion orifices are provided, the total area of ​​the multiple gas diversion orifices is S3, the area of ​​the stir-frying fire hole is S4, and S1+S3>S4.

[0012] Optionally, the diverter plate is evenly divided into a first region, a second region, a third region, and a fourth region in a clockwise direction. The orthographic projection of the first region in the vertical direction falls completely into the buffer cavity, and at least half of the gas diversion orifices are arranged in the first region.

[0013] Optionally, the central axis of the stir-fry flame ejector is located to the right of the central axis of the stir-fry flame exhaust channel, the left end of the guide vane is flush with or protrudes to the left of the stir-fry flame ejector, and the right end of the guide vane is connected to the inner wall of the stir-fry flame exhaust channel.

[0014] Optionally, the ejector channel of the stir-fry ejector is projected onto the guide plate in the direction of airflow.

[0015] Optionally, the outlet end of the central ring flame ejector is connected to the central ring flame outlet channel, all the stir-fry flame ejectors are arranged along the first direction, the central ring flame ejector is arranged along the second direction, and the second direction and the first direction have an angle β, 15°≤β≤30°.

[0016] Optionally, the inner flame cover further includes a cover plate, on which vertically extending flame holes and vertically extending inner ring flame holes are sequentially formed from the inside to the outside. Openings are provided on the upper and lower sides of the flame combustion chamber. The middle part of the cover plate covers the upper side of the inner flame cover body and covers the opening on the upper side of the flame combustion chamber. The flame holes communicate with the flame combustion chamber. An upward-facing inner ring flame groove is also formed on the upper side of the inner flame cover body. The inner ring flame groove is located outside the flame combustion chamber. The outer part of the cover plate covers the opening of the inner ring flame groove. The inner ring flame holes are located above the inner ring flame groove and communicate with the inner ring flame groove. Ventilation holes communicating with the middle ring combustion chamber are formed on the bottom and / or wall of the inner ring flame groove.

[0017] Optionally, an overflow hole communicating with the stir-frying gas chamber is provided on the inner side wall of the inner ring fire groove.

[0018] Optionally, it also includes an outer flame cap, which includes an outer flame cap body and an outer flame hole disposed on the outer flame cap body. The flame distributor also includes an outer ring flame outlet channel opened on the upper side of the flame distributor body and an outer ring flame ejector disposed on the lower side of the outer flame cap body. The outlet end of the outer ring flame ejector is connected to the outer ring flame outlet channel. The middle ring flame outlet channel is located between the stir-fry flame outlet channel and the outer ring flame outlet channel. The outer flame cap body covers the upper side of the outer ring flame outlet channel to form an outer ring gas channel with the outer ring flame outlet channel. The outer ring gas channel is connected to the outer flame hole.

[0019] Optionally, the air inlet of the middle ring flame ejector, the air inlet of the outer ring flame ejector, and the air inlet of the stir-fry flame ejector are all located on the same side of the flame distributor body.

[0020] Optionally, the central axis of the outer ring flame ejector is spaced L2 apart from the central axis of the stir-fry flame ejector, where 25mm≤L2≤35mm. The air inlet of the outer ring flame ejector is provided with a baffle plate, which extends in the direction away from the air outlet of the outer ring flame ejector and is located on the side close to the stir-fry flame ejector.

[0021] Optionally, the outer flame hole is opened on the periphery of the outer flame cover body, and the upper side of the outer flame cover body is provided with an upward-opening slit flame groove in the middle of the circumferential direction. The slit flame groove is inclined inward from bottom to top, and the bottom of the slit flame groove is provided with a plurality of slit flame holes communicating with the outer ring gas passage.

[0022] Another aspect of this utility model provides a gas stove, including the burner described above.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] This invention provides a burner, including a flame distributor and an inner flame cap. The flame distributor includes a flame distributor body, with a high-intensity flame ejector and a middle ring flame ejector disposed on the lower side of the flame distributor body. A high-intensity flame outlet channel and a middle ring flame outlet channel located outside the high-intensity flame outlet channel are disposed on the upper side of the flame distributor body. The outlet end of the high-intensity flame ejector is connected to the high-intensity flame outlet channel, and the outlet end of the middle ring flame ejector is connected to the middle ring flame outlet channel. The central axis of the high-intensity flame ejector is offset from the central axis of the high-intensity flame outlet channel by a distance L1, where L1 > 0 mm. This allows the air and fuel gas mixture ejected through the high-intensity flame ejector to form a spiral airflow in the high-intensity flame outlet channel, further improving the mixing uniformity between air and fuel gas, increasing the primary air coefficient, thereby improving combustion efficiency and reducing the CO content in the flue gas produced by combustion. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the burner provided in a specific embodiment of the present utility model;

[0026] Figure 2 yes Figure 1 Top view;

[0027] Figure 3 yes Figure 2 Sectional view at point AA;

[0028] Figure 4 yes Figure 1 Exploded view;

[0029] Figure 5 This is a three-dimensional structural diagram of the inner flame cap of the burner provided in a specific embodiment of this utility model;

[0030] Figure 6 yes Figure 1 Exploded view;

[0031] Figure 7 yes Figure 1 Top view;

[0032] Figure 8 yes Figure 7 Sectional view at point BB;

[0033] Figure 9 This is a side view of the burner after the inner flame cap and flame distributor are assembled, according to a specific embodiment of this utility model;

[0034] Figure 10 yes Figure 9 Sectional view at CC;

[0035] Figure 11 yes Figure 9 Top view;

[0036] Figure 12 yes Figure 11 Sectional view at point DD;

[0037] Figure 13 This is a bottom view of the burner distributor provided in a specific embodiment of this utility model;

[0038] Figure 14 This is a top view of the burner distributor provided in a specific embodiment of this utility model;

[0039] Figure 15 This is a side view of the burner distributor provided in a specific embodiment of the present utility model;

[0040] Figure 16 This is a schematic diagram of the structure of the flow divider plate of the inner flame cover provided in a specific embodiment of the present utility model (the first distribution of multiple gas flow dividers on the flow divider plate);

[0041] Figure 17 This is a schematic diagram of the structure of the flow divider plate of the inner flame cover provided in a specific embodiment of the present utility model (a second distribution of multiple gas flow dividers on the flow divider plate);

[0042] Figure 18 This is a schematic diagram of the structure of the flow divider plate of the inner flame cover provided in a specific embodiment of the present utility model (a third distribution method of multiple gas flow dividers on the flow divider plate);

[0043] Figure 19 This is a schematic diagram of the structure of the flow divider plate of the inner flame cover provided in a specific embodiment of the present utility model (a fourth distribution method of multiple gas flow dividers on the flow divider plate);

[0044] Figure 20 This is a schematic diagram of the structure of the flow divider plate of the inner flame cover provided in a specific embodiment of this utility model (the fifth distribution of multiple gas flow dividers on the flow divider plate);

[0045] Figure 21 This is a schematic diagram of the structure of the flow divider plate of the inner flame cover provided in a specific embodiment of this utility model (the sixth distribution method of multiple gas flow dividers on the flow divider plate).

[0046] In the picture:

[0047] 1. Flame distributor; 11. Flame distributor body; 12. Stir-fry flame ejector; 13. Middle ring flame ejector; 14. Outer ring flame ejector; 141. Baffle plate; 15. Flow guide plate;

[0048] 2. Outer flame cap; 21. Outer flame cap body; 22. Outer flame hole; 23. Slit flame groove; 230. Slit flame hole;

[0049] 3. Inner burner cap; 32. Middle ring burner hole; 33. Stir-fry burner hole; 34. Diverter plate; 35. Cover plate; 36. Inner ring burner hole; 37. Vent hole; 38. Cap brim; 39. Limiting step; 30. Ignition hole;

[0050] 4. Base; 41. Base body; 42. Stir-fry gas nozzle; 43. Middle ring gas nozzle; 44. Outer ring gas nozzle;

[0051] 101. Stir-fry flame exhaust channel; 1011. Buffer chamber; 102. Middle ring flame exhaust channel; 103. Outer ring flame exhaust channel;

[0052] 201. Gas passage for stir-frying; 202. Gas passage for the middle ring road; 203. Gas passage for the outer ring road;

[0053] 301. Stir-fry gas chamber; 302. Middle ring gas chamber; 303. Inner ring fire channel; 304. Liquid collection tank; 305. Main gas passage; 306. Gas distribution passage; 307. Overflow hole;

[0054] K1, Zone 1; K2, Zone 2; K3, Zone 3; K4, Zone 4. Detailed Implementation

[0055] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0056] Please refer to Figures 1-21This utility model provides a burner, including a flame distributor 1 and an inner flame cap 3. The burner 1 includes a burner body 11. A flaming ejector 12 and a central ring ejector 13 are disposed on the lower side of the burner body 11. A flaming exhaust channel 101 and a central ring exhaust channel 102 located outside the flaming exhaust channel 101 are disposed on the upper side of the burner body 11. The exhaust end of the flaming ejector 12 is connected to the flaming exhaust channel 101, and the exhaust end of the central ring ejector 13 is connected to the central ring exhaust channel 102. The central axis of the flaming ejector 12 is offset from the central axis of the flaming exhaust channel 101 by a distance L1 > 0 mm. This allows the air and fuel mixture ejected through the flaming ejector 12 to form a spiral airflow in the flaming exhaust channel 101, further improving the uniformity of the air and fuel mixture, increasing the primary air coefficient, thereby improving combustion efficiency and reducing the CO content in the flue gas produced by combustion. The inner flame cover 3 includes an inner flame cover body 31. A frying flame hole 33 is provided on the upper side of the inner flame cover body 31, and a central ring flame hole 32 is provided on the periphery of the inner flame cover body 31. A frying gas chamber 301 and a central ring gas chamber 302 located outside the frying gas chamber 301 are provided at the lower part of the inner flame cover body 31. The frying gas chamber 301 is connected to the frying flame hole 33, and the central ring gas chamber 302 is connected to the central ring flame hole 32. The inner flame cover body 31 is placed on the upper side of the frying flame outlet channel 101 and the central ring flame outlet channel 102. The frying flame outlet channel 101 is connected to the frying gas chamber 301 to form a frying gas channel 201, so that the mixture of air and gas can flow out to the frying flame hole 33 for combustion to form a frying flame. The central ring flame outlet passage 102 is connected to the central ring gas chamber 302 to form the central ring gas passage 202, so that the mixture of air and gas flows out to the central ring flame hole 32 for combustion, forming a central ring flame.

[0057] Optionally, 4mm ≤ L1 ≤ 6mm, so that the air and fuel mixture can achieve a better spiral airflow effect while ensuring the miniaturization of the structure. For example, in this embodiment, L1 is 5mm.

[0058] Because the flame ejector 12 creates a spiral airflow through the flame outlet channel 101, the spiral airflow, due to its tangential velocity, exhibits a high velocity on the outer side and a low velocity in the middle, leading to uneven flame distribution. Therefore, in this embodiment, optionally, a guide vane 15 is provided on the flame distributor body 11 within the flame outlet channel 101, positioned in front of the flame ejector 12's airflow direction. By providing the guide vane 15, the spiral airflow impacts the guide vane 15, reducing the spiral airflow rate and homogenizing the airflow velocity. Furthermore, the impact of the spiral airflow on the guide vane 15 allows for further mixing of the fuel and air. Thus, while reducing the uneven velocity generated by the spiral airflow, it also ensures uniform mixing between primary air and fuel, improving the primary air coefficient and ultimately guaranteeing uniform combustion of the flame.

[0059] Optionally, a diversion plate 34 is provided inside the stir-frying gas chamber 301. The diversion plate 34 has a main gas passage 305 and a gas diversion passage 306. The main gas passage 305 is located in the middle of the diversion plate 34, and the gas diversion passage 306 is located outside the main gas passage 305. The area of ​​the main gas passage 305 is S1, and the area of ​​the gas diversion passage 306 is S2, where S1 > S2. The guide plate 15, the stir-frying flame ejector 12, and the inner wall of the stir-frying flame outlet channel 101 enclose a buffer chamber 1011. The gas diversion passage 306 is located above the buffer chamber 1011, so that a large amount of mixed gas in the buffer chamber 1011 can flow smoothly through the main gas passage 305 and the gas diversion passage 306 to the top of the diversion plate 34, which can improve the problem of uneven distribution of the stir-frying flame and make the stir-frying flame centrally distributed.

[0060] Optionally, the total area of ​​the multiple gas distribution holes 306 is S3, and the area of ​​the stir-frying flame hole 33 is S4, where S1+S3>S4, to ensure that sufficient mixed gas can be distributed in each stir-frying flame hole 33 and improve the uniformity of the stir-frying flame distribution.

[0061] Optionally, the manifold is evenly divided into a first region K1, a second region K2, a third region K3, and a fourth region K4 in a clockwise direction. The vertical projection of the first region K1 falls completely into the buffer chamber. At least half of the gas diversion orifices are located in the first region K1 to ensure that a large amount of mixed gas in the buffer chamber flows out through the gas diversion orifices to the top of the manifold, so as to ensure that the mixed gas in the buffer chamber can flow smoothly out to the top of the manifold, and thus make the stir-fry flame have better uniformity.

[0062] Based on simulation experiments, the following six distribution patterns of the multiple gas diversion orifices 306 on the diversion plate 34 are preferred, as they have a better effect on improving the uniformity of the stir-fry flame:

[0063] First option: Please refer to Figure 16 There are seven gas diversion orifices 306. The seven gas diversion orifices 306 are arranged in a counterclockwise direction in the second region K2, the first region K1 and the fourth region K4. The first gas diversion orifice 306 is located in the middle of the second region K2. The second gas diversion orifice 306 spans the first region K1 and the second region K2. The third, fourth and fifth gas diversion orifices 306 are completely located in the first region K1. The sixth gas diversion orifice 306 spans the first region K1 and the fourth region K4. The seventh gas diversion orifice 306 is located in the middle of the fourth region K4.

[0064] The second option: Please refer to... Figure 17 Five gas diversion orifices 306 are provided. The five gas diversion orifices 306 are arranged in a counterclockwise direction in the second region K2, the first region K1 and the fourth region K4. The first gas diversion orifice 306 is located in the middle of the second region K2. The second, third and fourth gas diversion orifices 306 are completely located in the first region K1 and in the middle of the first region K1. The fifth gas diversion orifice 306 is located in the middle of the fourth region K4.

[0065] The third option: Please refer to... Figure 18 Five gas diversion orifices 306 are provided. The five gas diversion orifices 306 are arranged in a counterclockwise direction in the second region K2, the first region K1 and the fourth region K4. The first gas diversion orifice 306 spans the first region K1 and the second region K2. The second, third and fourth gas diversion orifices 306 are completely located in the first region K1. The fifth gas diversion orifice 306 spans the first region K1 and the fourth region K4.

[0066] The fourth type: Please refer to... Figure 19 Six gas diversion orifices 306 are provided, arranged counterclockwise in the second region K2, the first region K1, and the fourth region K4. The first gas diversion orifice 306 is located in the middle of the second region K2; the second, third, fourth, and fifth gas diversion orifices 306 are entirely located within the first region K1; and the sixth gas diversion orifice 306 is located in the middle of the fourth region K4. Alternatively...

[0067] Fifth option: Please refer to Figure 20Five gas diversion orifices 306 are provided, arranged counterclockwise in the second region K2, the first region K1, and the fourth region K4. The first gas diversion orifice 306 is located in the middle of the second region K2; the second, third, and fourth gas diversion orifices 306 are entirely within the first region K1 and located near the second region K2; and the fifth gas diversion orifice 306 is located in the middle of the fourth region K4.

[0068] Sixth option: Please refer to Figure 21 There are three gas distribution orifices 306, and the three gas distribution orifices 306 are completely located within the first region K1 and are located in the first region K1 near the second region K2.

[0069] Optionally, 5×S2≤S1≤6×S2 is used to further improve the uniformity of the gas mixture distribution above the splitter plate 34, thereby improving the uniformity of the stir-fry flame distribution.

[0070] Optionally, the central axis of the stir-fry ejector 12 is located to the right of the central axis of the stir-fry exhaust channel 101. The left end of the guide vane 15 is flush with or protrudes to the left of the stir-fry ejector 12. The right end of the guide vane 15 is connected to the inner wall of the stir-fry exhaust channel 101, so that the air-gas mixture can be completely blocked by the guide vane 15 and the inner wall of the stir-fry exhaust channel 101 to generate an impact airflow, further mixing the gas and air.

[0071] Optionally, the ejector channel of the stir-fry ejector 12 is projected onto the guide vane 15 along the airflow direction, so that the air and gas mixture ejected from the stir-fry ejector 12 can completely hit the guide vane 15, thus achieving a better uniform airflow speed.

[0072] Optionally, the end face of the guide vane 15 facing the frying fire ejector 12 is an arc-shaped surface. The center of the guide vane 15 is offset from the left side of the central axis of the frying fire outlet channel 101 by a distance L3, 5mm≤L3≤7mm, so that the air and gas mixture ejected from the frying fire ejector 12 can flow smoothly along the guide vane 15, thereby preventing the flow velocity of the gas mixture from decreasing too much, thus ensuring that the gas mixture can be mixed with more primary air.

[0073] Optionally, the outlet end of the central ring flame ejector is connected to the central ring flame outlet channel. All the stir-fry flame ejectors are set along the first direction, and the central ring flame ejector is set along the second direction. The second direction and the first direction have an angle β, 15°≤β≤30°, so that the distance between the inlet end of the stir-fry flame ejector and the inlet end of the central ring flame ejector 13 is large enough.

[0074] Optionally, the inner burner cover also includes a cover plate 35. The cover plate 35 has vertically extending flame holes 33 and vertically extending inner ring flame holes 36 sequentially from the inside to the outside. The upper and lower sides of the flame-making gas chamber 301 are provided with openings. The middle part of the cover plate 35 covers the upper side of the inner burner cover body 31 and covers the opening on the upper side of the flame-making gas chamber 301. The flame holes 33 are connected to the flame-making gas chamber 301. The upper side of the inner burner cover body 31 is also provided with an upward-facing inner ring flame groove 303. The inner ring flame groove 303 is located on the outside of the flame-making gas chamber 301. The outer part of the cover plate 35 covers the opening of the inner ring flame groove 303. The inner ring flame holes 36 are located above the inner ring flame groove 303 and are connected to the inner ring flame groove 303. The bottom and / or wall of the inner ring flame groove 303 are provided with vent holes 37 that are connected to the middle ring gas chamber 303. The mixture of gas and air in the middle ring combustion chamber 302 can enter the inner ring flame chamber 303 through the vent 37, and then burn in the inner ring flame chamber 36 to form an inner ring flame.

[0075] Optionally, an overflow hole 307 communicating with the stir-frying gas chamber 301 is provided on the inner side wall of the inner ring burner 303. When the stir-frying burner hole 33 and / or the inner ring burner hole 36 are blocked by cooking liquid, the gas in the stir-frying gas chamber 301 can flow through the overflow hole 307 to the inner ring burner 303, and then flow out to the middle ring gas chamber 302, where it burns in the middle ring burner hole 32, thus preventing the gas in the stir-frying gas chamber 301 from flowing back into the stove and causing a hazard.

[0076] Optionally, the inner burner cap body 31 is also provided with a limiting step 39, a liquid collection tank 304, and a guide channel (not shown in the figure). The limiting step 39 is located outside the cover plate 35 and abuts or contacts the outer periphery of the cover plate 35 to limit the installation of the cover plate 35 on the inner burner cap body 31. The liquid collection tank 304 is located outside the limiting step 39 and has an upward opening. The guide channel is formed on the outer wall of the liquid collection tank 304 and communicates with the outside of the inner burner cap body 31. The liquid collection tank 304 is used to collect cooking overflow. The cooking overflow in the liquid collection tank 304 flows out to the outside of the inner burner cap body 31 through the guide channel, preventing the cooking overflow from falling into the central ring flame hole 32 and extinguishing the central ring flame.

[0077] Optionally, a brim 38 is provided at the upper end of the periphery of the inner burner cap body 31, and an ignition hole 30 is provided below the brim 38 on the periphery of the inner burner cap body 31. The ignition hole 30 is connected to the central ring gas chamber 302. The brim 38 covers the ignition hole 30 to prevent the ignition flame of the ignition hole 30 from being extinguished by cooking liquid.

[0078] Optionally, it also includes an outer flame cap 2, which includes an outer flame cap body 21 and an outer flame hole 22 disposed on the outer flame cap body 21. The flame distributor 1 also includes an outer ring flame outlet channel 103 opened on the upper side of the flame distributor body 11 and an outer ring flame ejector 14 disposed on the lower side of the outer flame cap body 11. The outlet end of the outer ring flame ejector 14 is connected to the outer ring flame outlet channel 103. The middle ring flame outlet channel 102 is located between the stir-fry flame outlet channel 101 and the outer ring flame outlet channel 103. The outer flame cap body 21 covers the upper side of the outer ring flame outlet channel 103 to form an outer ring gas channel 203 with the outer ring flame outlet channel 103. The outer ring gas channel 203 is connected to the outer flame hole 22 so that the gas mixture of gas and air can flow out through the outer ring gas channel 203 to the outer flame hole 22 for combustion, forming an outer ring flame.

[0079] Optionally, the air inlet ends of the central ring flame ejector 13, the outer ring flame ejector 14, and the stir-fry flame ejector 12 are all located on the same side of the burner body 11. This allows the stir-fry gas nozzle 42, the central ring gas nozzle 43, and the outer ring gas nozzle 44 of the burner to be installed on the same side, which in turn facilitates the centralized arrangement of gas pipelines, reduces the space occupied by gas pipelines, and thus contributes to product miniaturization.

[0080] Optionally, the distance L2 between the central axis of the outer ring flame ejector and the central axis of the frying flame ejector is set to 25mm≤L2≤35mm, so as to ensure that there is a sufficient distance between the outer ring flame ejector 14 and the frying flame ejector 12, and reduce the mutual influence between the mixed gas entering the outer ring flame ejector 14 and the mixed gas entering the frying flame ejector 12.

[0081] Optionally, the air inlet of the outer ring flame ejector 14 is provided with a baffle plate 141. The baffle plate 141 extends toward the air outlet of the outer ring flame ejector 14 and is located on the side close to the frying flame ejector 12. By providing the baffle plate 141, the mixed gas entering the outer ring flame ejector 14 is further blocked from the mixed gas entering the frying flame ejector 12, thereby further reducing the mutual influence between the mixed gas entering the outer ring flame ejector 14 and the mixed gas entering the frying flame ejector 12.

[0082] Optionally, the baffle plate 141 extends downward from the upper end of the air inlet end of the outer ring ejector 14 to at least the middle of the air inlet end of the outer ring ejector 14 to improve the baffle effect.

[0083] Optionally, the outer flame hole 22 is opened on the periphery of the outer flame cover body 21. The upper side of the outer flame cover body 21 has a circumferentially opened slit flame groove 23 with the opening facing upward. The slit flame groove 23 is inclined inward from bottom to top. The bottom of the slit flame groove 23 has a plurality of slit flame holes 230 communicating with the outer ring gas passage 203, so that the gas and air mixture in the outer ring gas passage 203 can flow out to the slit flame hole 203 and then burn in the slit flame groove 23 to form a slit flame. By setting the slit flame groove 23 inward from bottom to top, the slit flame can be sprayed inward, so that the slit flame can be distributed in the middle position between the outer ring flame and the middle ring flame, which is conducive to a more uniform flame distribution of the burner.

[0084] Optionally, it also includes a base 4, on which the fire distributor 1 is mounted.

[0085] Optionally, the base 4 includes a base body 41 and a stir-fry gas nozzle 42, a middle ring gas nozzle 43 and an outer ring gas nozzle 44 mounted on the base body 41. The stir-fry gas nozzle 42 is aligned with the air inlet of the stir-fry flame ejector 12, the middle ring gas nozzle 43 is aligned with the air inlet of the middle ring flame ejector 13, and the outer ring gas nozzle 44 is aligned with the air inlet of the outer ring flame ejector 14.

[0086] Another aspect of this utility model provides a gas stove, including the burner described above.

[0087] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A burner, characterized in that, include: The flame distributor (1) includes a flame distributor body (11). The flame distributor body (11) is provided with a frying fire ejector (12) and a middle ring fire ejector (13) on its lower side. The flame distributor body (11) is provided with a frying fire exhaust channel (101) and a middle ring fire exhaust channel (102) located outside the frying fire exhaust channel (101) on its upper side. The exhaust end of the frying fire ejector (12) is connected to the frying fire exhaust channel (101). The exhaust end of the middle ring fire ejector (13) is connected to the middle ring fire exhaust channel (102). The central axis of the frying fire ejector (12) is offset from the central axis of the frying fire exhaust channel (101) by a distance L1, where L1 > 0 mm. The inner flame cover (3) includes an inner flame cover body (31). A high-heat flame hole (33) is provided on the upper side of the inner flame cover body (31). A central ring flame hole (32) is provided on the periphery of the inner flame cover body (31). A high-heat gas chamber (301) and a central ring gas chamber (302) located outside the high-heat gas chamber (301) are provided at the lower part of the inner flame cover body (31). The high-heat gas chamber (301) communicates with the high-heat flame hole (33). The central ring gas chamber (302) is connected to the central ring flame hole (32). The inner flame cover body (31) is installed on the upper side of the stir-fry flame outlet channel (101) and the central ring flame outlet channel (102). The stir-fry flame outlet channel (101) is connected to the stir-fry gas chamber (301) to form a stir-fry gas channel (201). The central ring flame outlet channel (102) is connected to the central ring gas chamber (302) to form a central ring gas channel (202).

2. The burner according to claim 1, characterized in that, A guide vane (15) is provided in the gas outlet channel (101) of the stir-fry fire, and the guide vane (15) is located in front of the airflow direction of the stir-fry fire ejector (12).

3. The burner according to claim 2, characterized in that, A diversion plate (34) is provided inside the stir-fry gas chamber (301). The diversion plate (34) has a main gas passage (305) and a gas diversion passage (306). The main gas passage (305) is located in the middle of the diversion plate (34), and the gas diversion passage (306) is located outside the main gas passage (305). The area of ​​the main gas passage (305) is S1, and the area of ​​the gas diversion passage (306) is S2, where S1 > S2. The guide plate (15), the stir-fry fire ejector (12), and the inner wall of the stir-fry fire outlet channel (101) form a buffer chamber (1011). The gas diversion passage (306) is located above the buffer chamber (1011).

4. The burner according to claim 3, characterized in that, The gas diversion orifice (306) is provided in multiple ways, the total area of ​​the multiple gas diversion orifices (306) is S3, the area of ​​the stir-fry fire hole (33) is S4, and S1+S3>S4.

5. The burner according to claim 4, characterized in that, The diversion plate (34) is evenly divided into a first region (K1), a second region (K2), a third region (K3) and a fourth region (K4) in a clockwise direction. The orthographic projection of the first region (K1) in the vertical direction falls completely into the buffer cavity (1011), and at least half of the gas diversion orifices (306) are arranged in the first region (K1).

6. The burner according to claim 2, characterized in that, The central axis of the stir-fry ejector (12) is located to the right of the central axis of the stir-fry exhaust channel (101). The left end of the guide vane (15) is level with or protrudes to the left of the left end of the stir-fry ejector (12). The right end of the guide vane (15) is connected to the inner wall of the stir-fry exhaust channel (101).

7. The burner according to claim 6, characterized in that, The ejection channel of the stir-fry ejector (12) is projected onto the guide plate (15) in the direction of airflow.

8. The burner according to claim 1, characterized in that, The outlet end of the central ring fire ejector (13) is connected to the central ring fire outlet channel (102). The stir-fry fire ejectors (12) are all arranged along the first direction. The central ring fire ejector (13) is arranged along the second direction, and the second direction and the first direction have an angle β, 15°≤β≤30°.

9. The burner according to claim 1, characterized in that, The inner flame cover (3) also includes a cover plate (35), on which a vertically extending frying flame hole (33) and a vertically extending inner ring flame hole (36) are sequentially opened from the inside to the outside. The upper and lower sides of the frying gas chamber (301) are provided with openings. The middle part of the cover plate (35) covers the upper side of the inner flame cover body (31) and covers the opening on the upper side of the frying gas chamber (301). The frying flame hole (33) communicates with the frying gas chamber (301). The upper side of the burner body (31) is also provided with an inner ring fire groove (303) with the opening facing upward. The inner ring fire groove (303) is located outside the stir-frying gas chamber (301). The outer part of the cover plate (35) covers the opening of the inner ring fire groove (303). The inner ring fire hole (36) is located above the inner ring fire groove (303) and communicates with the inner ring fire groove (303). The bottom and / or wall of the inner ring fire groove (303) are provided with a vent hole (37) that communicates with the middle ring gas chamber (302).

10. The burner according to claim 9, characterized in that, An overflow hole (307) communicating with the stir-frying gas chamber (301) is provided on the inner side wall of the inner ring fire groove (303).

11. The burner according to any one of claims 1-10, characterized in that, It also includes an outer flame cap (2), which includes an outer flame cap body (21) and an outer flame hole (22) disposed on the outer flame cap body (21). The flame distributor (1) also includes an outer ring flame outlet channel (103) opened on the upper side of the flame distributor body (11) and an outer ring flame ejector (14) disposed on the lower side of the outer flame cap body (21). The outlet end of the outer ring flame ejector (14) is connected to the outer ring flame outlet channel (103). The middle ring flame outlet channel (102) is located between the stir-fry flame outlet channel (101) and the outer ring flame outlet channel (103). The outer flame cap body (21) covers the upper side of the outer ring flame outlet channel (103) to form an outer ring gas channel (203) between it and the outer ring flame outlet channel (103). The outer ring gas channel (203) is connected to the outer flame hole (22).

12. The burner according to claim 11, characterized in that, The air inlet of the middle ring fire ejector (13), the air inlet of the outer ring fire ejector (14), and the air inlet of the stir-fry fire ejector (12) are all located on the same side of the fire distributor body (11).

13. The burner according to claim 12, characterized in that, The central axis of the outer ring flame ejector (14) is spaced L2 apart from the central axis of the stir-fry flame ejector (12), where 25mm≤L2≤35mm. The air inlet of the outer ring flame ejector (14) is provided with a baffle plate (141), which extends toward the air outlet opposite to the outer ring flame ejector (14) and is located on the side close to the stir-fry flame ejector (12).

14. The burner according to claim 11, characterized in that, The outer flame hole (22) is opened on the periphery of the outer flame cover body (21). The upper side of the outer flame cover body (21) is provided with an upward-facing slit flame groove (23) along the circumferential direction. The slit flame groove (23) is inclined inward from bottom to top. The bottom of the slit flame groove (23) is provided with a plurality of slit flame holes (230) that communicate with the outer ring gas passage (203).

15. A gas stove, characterized in that, Includes the burner according to any one of claims 1-14.

Images