Inner fire cover and burner

Abstract

The utility model discloses an inner fire cover and combustor. The inner fire cover, including inner fire cover body, the upside of inner fire cover body is equipped with the wok -frying fire hole, the lower part of inner fire cover body is equipped with wok -frying gas cavity, wok -frying gas cavity with wok -frying fire hole intercommunication, be provided with the splitter plate in wok -frying gas cavity, be equipped with main gas through -hole and gas shunt through -hole on the splitter plate, the middle part of main gas through -hole is equipped in the splitter plate, the outer side of main gas through -hole is equipped with gas shunt through -hole, the area of main gas through -hole is S1, the area of gas shunt through -hole is S2, S1 > S2. The utility model provides an inner fire cover, can improve the problem of uneven flame distribution, and make the flame center distribution simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to an inner burner cap and burner. Background Technology

[0002] Existing top-intake burners typically have nozzles externally mounted on the cooktop, with the ejector hidden beneath the burner's flame distributor. The ejector's structure is limited in length, resulting in a lower primary air coefficient and a tendency for excessive CO content in the flue gas. Therefore, to improve the ejection effect and ensure uniform air-fuel mixing, a mixing structure is needed. However, this mixing structure can easily cause uneven distribution of the mixed gas at the burner orifices, leading to uneven flame distribution.

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

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes an inner flame cover that can improve the problem of uneven flame distribution and make the flame centrally distributed.

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

[0006] An inner flame cover includes an inner flame cover body. A frying flame hole is formed on the upper side of the inner flame cover body, and a frying gas chamber is formed on the lower part of the inner flame cover body. The frying gas chamber communicates with the frying flame hole. A diversion plate is provided inside the frying gas chamber. A main gas passage and a gas diversion passage are formed on the diversion plate. The main gas passage is located in the middle of the diversion plate, and the gas diversion passage is located on the outer side of 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.

[0007] Optionally, the gas diversion orifice is provided in multiple ways.

[0008] Optionally, the total area of ​​the plurality of gas distribution holes is S3, and the area of ​​the stir-frying fire hole is S4, where S1+S3>S4.

[0009] 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, and at least half of the gas diversion orifices are located in the first region.

[0010] Optionally, seven gas diversion orifices are provided, arranged counterclockwise in the second region, the first region, and the fourth region. The first gas diversion orifice is located in the middle of the second region; the second gas diversion orifice spans the first and second regions; the third, fourth, and fifth gas diversion orifices are entirely located within the first region; the sixth gas diversion orifice spans the first and fourth regions; and the seventh gas diversion orifice is located in the middle of the fourth region. Alternatively...

[0011] Five gas diversion orifices are provided, arranged counterclockwise in the second region, the first region, and the fourth region. The first gas diversion orifice is located in the center of the second region; the second, third, and fourth gas diversion orifices are entirely located within the first region and in its center; and the fifth gas diversion orifice is located in the center of the fourth region. Alternatively...

[0012] Five gas diversion orifices are provided, arranged counterclockwise in the second region, the first region, and the fourth region. The first gas diversion orifice spans both the first and second regions; the second, third, and fourth gas diversion orifices are entirely located within the first region; and the fifth gas diversion orifice spans both the first and fourth regions. Alternatively...

[0013] Six gas diversion orifices are provided, arranged counterclockwise in the second region, the first region, and the fourth region. The first gas diversion orifice is located in the center of the second region; the second, third, fourth, and fifth gas diversion orifices are entirely located within the first region; and the sixth gas diversion orifice is located in the center of the fourth region. Alternatively...

[0014] Five gas diversion orifices are provided, arranged counterclockwise in the second region, the first region, and the fourth region. The first gas diversion orifice is located in the center of the second region; the second, third, and fourth gas diversion orifices are entirely located within the first region and are positioned close to the second region; the fifth gas diversion orifice is located in the center of the fourth region.

[0015] The gas diversion orifice is provided in three parts, and the three gas diversion orifices are completely located in the first area and are located in the first area close to the second area.

[0016] Alternatively, 5×S2≤S1≤6×S2.

[0017] Optionally, it also includes a cover plate, on which a stir-frying fire hole extending vertically is provided. Openings are provided on the upper and lower sides of the stir-frying gas chamber. The cover plate is placed on the upper side of the inner fire cover body and covers the opening on the upper side of the stir-frying gas chamber. The stir-frying fire hole is in communication with the stir-frying gas chamber.

[0018] Optionally, a central ring flame hole is provided on the periphery of the inner flame cover body, and a central ring gas chamber located outside the stir-fry gas chamber is also provided on the lower side of the inner flame cover body, and the central ring gas chamber is connected to the central ring flame hole.

[0019] Optionally, the upper side of the inner flame cover body is further provided with an upward-facing inner ring flame groove. The inner ring flame groove is located outside the stir-frying gas chamber. The cover plate covers the opening of the inner ring flame groove. An inner ring flame hole is provided on the outer side of the cover plate. The stir-frying flame hole is located in the middle of the cover plate. The inner ring flame hole is located above the inner ring flame groove and communicates with the inner ring flame groove. A vent hole communicating with the middle ring gas chamber is provided on the bottom and / or wall of the inner ring flame groove.

[0020] Optionally, an overflow hole communicating with the stir-frying gas chamber is provided on the inner side wall of the inner ring fire groove.

[0021] Optionally, the inner flame cover body is further provided with a limiting step, a liquid holding tank, and a flow guide channel. The limiting step is located on the outside of the cover plate and abuts or contacts the outer periphery of the cover plate. The liquid holding tank is located on the outside of the limiting step and has an upward opening. The flow guide channel is formed on the outer wall of the liquid holding tank and communicates with the outside of the inner flame cover body.

[0022] In another aspect, this utility model provides a burner, including a flame distributor and the aforementioned inner flame cap. The flame distributor includes a flame distributor body, a frying fire ejector disposed on the lower side of the flame distributor body, and a frying fire exhaust channel disposed on the upper side of the flame distributor body. The inner flame cap body covers the upper side of the frying fire exhaust channel, and the frying fire exhaust channel communicates with the frying fire gas chamber to form a frying fire gas channel. The exhaust end of the frying fire ejector communicates with the frying 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. A guide vane is disposed in the frying fire exhaust channel, and the guide vane is located in front of the airflow direction of the frying fire ejector. The guide vane, the frying fire ejector, and the inner wall of the frying fire exhaust channel enclose a buffer cavity, and the gas distribution orifice is located above the buffer cavity.

[0023] Optionally, the orthographic projection of the first region of the diverter in the vertical direction falls entirely into the buffer cavity.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] The inner flame cover provided by this utility model is mainly adapted to the corresponding flame distributor. By setting a diversion plate in the gas chamber of stir-frying, and opening a main gas passage and a gas diversion passage on the diversion plate, the gas diversion passage is located above the buffer chamber of the flame distributor, so that a large amount of mixed gas in the buffer chamber can flow smoothly through the main gas passage and the gas diversion passage to the top of the diversion plate, which can improve the problem of uneven distribution of stir-frying flame, and at the same time make the stir-frying flame centrally distributed. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the inner flame cover provided in a specific embodiment of this utility model;

[0027] Figure 2 yes Figure 1 Exploded view;

[0028] Figure 3 yes Figure 1 Top view;

[0029] Figure 4 yes Figure 3 Sectional view at point BB;

[0030] Figure 5 This is a side view of the inner flame cap and the flame distributor after assembly, provided in a specific embodiment of this utility model;

[0031] Figure 6 yes Figure 5 Sectional view at CC;

[0032] Figure 7 yes Figure 5 Top view;

[0033] Figure 8 yes Figure 7 Sectional view at point DD;

[0034] Figure 9 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);

[0035] Figure 10 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);

[0036] Figure 11 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);

[0037] Figure 12 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);

[0038] Figure 13 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);

[0039] Figure 14 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);

[0040] Figure 15 This is a three-dimensional structural schematic diagram of the burner provided in a specific embodiment of the present utility model;

[0041] Figure 16 yes Figure 15 Top view;

[0042] Figure 17 yes Figure 16 Sectional view at point AA;

[0043] Figure 18 yes Figure 15 The exploded diagram.

[0044] In the picture:

[0045] 1. Flame distributor; 11. Flame distributor body; 12. Stir-fry flame ejector; 13. Middle ring flame ejector; 14. Outer ring flame ejector; 15. Flow deflector;

[0046] 2. Outer flame cap; 21. Outer flame cap body; 22. Outer flame hole;

[0047] 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;

[0048] 4. Base; 41. Base body; 42. Stir-fry gas nozzle; 43. Middle ring gas nozzle; 44. Outer ring gas nozzle;

[0049] 101. Stir-fry flame exhaust channel; 1011. Buffer chamber; 102. Middle ring flame exhaust channel; 103. Outer ring flame exhaust channel;

[0050] 201. Gas passage for stir-frying; 202. Gas passage for the middle ring road; 203. Gas passage for the outer ring road;

[0051] 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;

[0052] K1, Zone 1; K2, Zone 2; K3, Zone 3; K4, Zone 4. Detailed Implementation

[0053] 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.

[0054] Please refer to Figures 1-8 This utility model provides an inner flame cover, including an inner flame cover body 31. A stir-frying fire hole 33 is provided on the upper side of the inner flame cover body 31, and a stir-frying gas chamber 301 is provided on the lower part of the inner flame cover body 31. The stir-frying gas chamber 301 is connected to the stir-frying fire hole 33. A diversion plate 34 is provided in the stir-frying gas chamber 301. A main gas passage 305 and a gas diversion passage 306 are provided on the diversion plate 34. The main gas passage 305 is located in the middle of the diversion plate 34, and the gas diversion passage 306 is located on the outside of 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.

[0055] The inner flame cap 3 provided by this utility model is for use with the corresponding burner 1. Specifically, this utility model also provides a burner, including a burner 1 and the aforementioned inner flame cap 3. The burner 1 includes a burner 1 body, a frying fire ejector 12 is provided on the lower side of the burner 1 body, and a frying fire exhaust channel 101 is provided on the upper side of the burner 1 body. The inner flame cap body 31 covers the upper side of the frying fire exhaust channel 101. The frying fire exhaust channel 101 communicates with the frying gas chamber 301 to form a frying gas channel 201. The outlet end of the stir-fry ejector 12 is connected to the stir-fry ejector channel 101. The central axis of the stir-fry ejector 12 is offset from the central axis of the stir-fry ejector channel 101 by a distance L1 > 0 mm. A guide vane 15 is provided in the stir-fry ejector channel 101, located in front of the airflow direction of the stir-fry ejector 12. The guide vane 15, the stir-fry ejector 12, and the inner wall of the stir-fry ejector channel 101 form a buffer cavity 1011. The gas distribution orifice 306 is located above the buffer cavity 1011. The air and gas mixture ejected by the stir-fry ejector 12 can form a spiral airflow in the stir-fry ejector channel 101, further improving the mixing uniformity between air and gas, increasing the primary air coefficient, thereby improving combustion efficiency and reducing the CO content in the flue gas produced by combustion. Because the stir-fry flame ejector 1212 ejects a spiral airflow from the stir-fry flame outlet channel 101, the spiral airflow will have a high outer velocity and a low middle velocity due to the tangential velocity of the spiral airflow, resulting in uneven distribution of the stir-fry flame. Therefore, a guide vane 15 is provided so that the spiral airflow hits the guide vane 15. On the one hand, this reduces the flow rate of the spiral airflow and makes the airflow velocity more uniform. On the other hand, because the spiral airflow hits the guide vane 15, the gas and air can be further mixed. In this way, while reducing the uneven flow velocity generated by the spiral airflow, the uniformity of the mixing between primary air and gas can also be ensured, the primary air coefficient can be increased, and thus the combustion uniformity of the stir-fry flame can be improved. By setting a diversion plate 34 in the stir-frying gas chamber 301, and opening a main gas passage 305 and a gas diversion passage 306 in the diversion plate 34, 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, the problem of uneven distribution of stir-frying flame can be improved, and the stir-frying flame can be centered.

[0056] Optionally, multiple gas distribution orifices 306 are provided to further improve the uniformity of the stir-fry flame distribution.

[0057] 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.

[0058] Optionally, the flow divider 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, and at least half of the gas flow divider holes 306 are located in the first region K1 to ensure that the mixed gas in the buffer chamber 1011 can flow smoothly out to the top of the flow divider 34.

[0059] Optionally, the vertical projection of the first region K1 of the diverter plate 34 falls entirely into the buffer chamber 1011, so that the buffer chamber 1011 is directly opposite the first region K1. This ensures that a large amount of mixed gas in the buffer chamber 1011 flows out through the gas diversion orifice 306 to the top of the diverter plate 34, which can make the stir-fry flame have better uniformity.

[0060] Based on simulation experiments, the following six distribution patterns of 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:

[0061] First option: Please refer to Figure 9 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.

[0062] The second option: Please refer to... Figure 10 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.

[0063] The third option: Please refer to... Figure 11Five 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.

[0064] The fourth type: Please refer to... Figure 12 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...

[0065] Fifth option: Please refer to Figure 13 Five 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.

[0066] Sixth option: Please refer to Figure 14 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.

[0067] 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.

[0068] Please refer to Figures 1-8 Optionally, it also includes a cover plate 35, on which a stir-frying fire hole 33 extending in a vertical direction is provided. Openings are provided on the upper and lower sides of the stir-frying gas chamber 301. The cover plate 35 is placed on the upper side of the inner fire cover body 31 and covers the opening on the upper side of the stir-frying gas chamber 301. The stir-frying fire hole 33 is connected to the stir-frying gas chamber 301.

[0069] Optionally, a central ring flame hole 32 is provided on the periphery of the inner flame cover body 31, and a central ring gas chamber 302 located outside the stir-fry gas chamber 301 is also provided on the lower side of the inner flame cover body 31, with the central ring gas chamber 302 communicating with the central ring flame hole 32.

[0070] Optionally, an inner ring fire groove 303 with an upward opening is also provided on the upper side of the inner fire cover body 31. The inner ring fire groove 303 is located outside the stir-frying gas chamber 301. The cover plate 35 covers the opening of the inner ring fire groove 303. An inner ring fire hole 36 is provided on the outer side of the cover plate 35. The stir-frying fire hole 33 is provided in the middle of the cover plate 35. The inner ring fire hole 36 is located above the inner ring fire groove 303 and communicates with the inner ring fire groove 303. A vent hole 37 communicating with the middle ring gas chamber 302 is provided on the bottom and / or wall of the inner ring fire groove 303. The gas mixture of gas and air in the middle ring gas chamber 302 can enter the inner ring fire groove 303 through the vent hole 37 and then burn in the inner ring fire hole 36 to form an inner ring flame.

[0071] 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.

[0072] In addition, by separating the cover plate 35 and the inner flame cover body 31, it is convenient to open the inner ring flame groove 303, the inner ring flame hole 36 and the overflow hole 307 on the inner flame cover body 31, which facilitates the production and manufacturing of the inner flame cover 3.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 L2, 5mm≤L2≤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.

[0079] Please refer to Figures 15-18 Optionally, an outer ring flame ejector 14 is provided on the lower side of the burner body 11, and an outer ring flame outlet passage 103 is provided on the upper side of the burner body 11. The outlet end of the outer ring flame ejector 14 is connected to the outer ring flame outlet passage 103. The burner also includes an outer flame cap 2, which includes an outer flame cap body 21 and an outer flame hole 22 provided on the outer flame cap body 21. The outer flame cap body 21 covers the upper side of the outer ring flame outlet passage 103 to form an outer ring gas passage 203 between the outer flame cap body 21 and the outer ring flame outlet passage 103. The outer ring gas passage 203 is connected to the outer flame hole 22.

[0080] Optionally, the burner body 11 is further provided with a central ring flame ejector 13 and a central ring flame outlet passage 102. The central ring flame outlet passage 102 is located between the stir-fry flame outlet passage 101 and the outer ring flame outlet passage 103. The stir-fry flame ejector 12 is located between the outer ring flame ejector 14 and the central ring flame ejector 13. The outlet end of the central ring flame ejector 13 is connected to the central ring flame outlet passage 102. The central ring flame outlet passage 102 is connected to the central ring gas chamber 302 to form a central ring gas passage 202.

[0081] Optionally, it also includes a base 4, on which the fire distributor 1 is mounted.

[0082] 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.

[0083] 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. An inner fire cap characterized in that, The device includes an inner flame cover body (31), on the upper side of which is a frying fire hole (33), and on the lower part of which is a frying gas chamber (301). The frying gas chamber (301) is connected to the frying fire hole (33). A diversion plate (34) is provided in the frying gas chamber (301). A main gas passage (305) and a gas diversion passage (306) are provided on the diversion plate (34). The main gas passage (305) is located in the middle of the diversion plate (34), and the gas diversion passage (306) is located on the outside of 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.

2. The inner fire door according to claim 1, wherein, The gas distribution orifice (306) is provided in multiple ways.

3. The inner fire door according to claim 2, wherein, The total area of ​​the plurality of gas distribution holes (306) is S3, and the area of ​​the stir-fry fire hole (33) is S4, where S1+S3>S4.

4. The inner fire door according to claim 2, wherein, 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, and at least half of the gas diversion orifices (306) are located in the first region (K1).

5. The inner fire door according to claim 4, wherein, Seven gas diversion orifices (306) are provided, and 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 within the first region (K1), the sixth gas diversion orifice (306) spans the first region (K1) and the fourth region (K4), and the seventh gas diversion orifice (306) is located in the middle of the fourth region (K4); or Five gas diversion orifices (306) are provided, and 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 within the first region (K1) and in its middle, and the fifth gas diversion orifice (306) is located in the middle of the fourth region (K4); or Five gas diversion orifices (306) are provided, and 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 within the first region (K1), and the fifth gas diversion orifice (306) spans the first region (K1) and the fourth region (K4); or Six gas diversion orifices (306) are provided, and the six 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, fourth, and fifth gas diversion orifices (306) are completely located within the first region (K1), and the sixth gas diversion orifice (306) is located in the middle of the fourth region (K4); or Five gas diversion orifices (306) are provided, and 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 within the first region (K1) and are positioned close to the second region (K2) in the first region (K1), and the fifth gas diversion orifice (306) is located in the middle of the fourth region (K4); or The gas diversion orifice (306) is provided in three parts, and the three gas diversion orifices (306) are completely located within the first region (K1) and located in the first region (K1) near the second region (K2).

6. The inner fire door according to claim 5, wherein, 5×S2≤S1≤6×S2.

7. The inner fire door according to any one of claims 1-6, characterized in that It also includes a cover plate (35), on which a stir-frying fire hole (33) extending vertically is provided. The upper and lower sides of the stir-frying gas chamber (301) are provided with openings. The cover plate (35) covers the upper side of the inner fire cover body (31) and covers the opening on the upper side of the stir-frying gas chamber (301). The stir-frying fire hole (33) is connected to the stir-frying gas chamber (301).

8. The inner fire door according to claim 7, wherein, The inner flame cover body (31) has a central ring flame hole (32) on its periphery. The inner flame cover body (31) also has a central ring gas chamber (302) located outside the stir-fry gas chamber (301) on its lower side. The central ring gas chamber (302) is connected to the central ring flame hole (32).

9. The inner fire door according to claim 8, wherein, The inner fire cover body (31) is also provided with an upper-facing inner ring fire groove (303). The inner ring fire groove (303) is located outside the stir-frying gas chamber (301). The cover plate (35) covers the opening of the inner ring fire groove (303). The outer side of the cover plate (35) is provided with an inner ring fire hole (36). The stir-frying fire hole (33) is located in the middle of the cover plate (35). 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 inner fire door according to claim 9, wherein, 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 inner fire door according to claim 7, wherein, The inner flame cover body (31) is also provided with a limiting step (39), a liquid holding tank (304) and a flow guide. The limiting step (39) is located on the outside of the cover plate (35) and abuts or contacts the outer periphery of the cover plate (35). The liquid holding tank (304) is located on the outside of the limiting step (39) and has an upward opening. The flow guide is opened on the outer wall of the liquid holding tank (304) and communicates with the outside of the inner flame cover body (31).

12. A burner characterized by, The device includes a flame distributor (1) and an inner flame cap (3) as described in any one of claims 1-11. The flame distributor (1) includes a flame distributor body (11), a frying fire ejector (12) is provided on the lower side of the flame distributor body (11), a frying fire exhaust channel (101) is provided on the upper side of the flame distributor body (11), the inner flame cap body (31) covers the upper side of the frying fire exhaust channel (101), the frying fire exhaust channel (101) communicates with the frying gas chamber (301) to form a frying gas passage (201), and the exhaust end of the frying fire ejector (12) is connected to the frying fire exhaust channel (201). The channel (101) is connected, and the central axis of the stir-fry flame ejector (12) is offset from the central axis of the stir-fry flame outlet channel (101) by a distance L1, where L1 > 0 mm. A guide vane (15) is provided in the stir-fry flame outlet channel (101). The guide vane (15) is located in front of the airflow direction of the stir-fry flame ejector (12). The guide vane (15), the stir-fry flame ejector (12), and the inner wall of the stir-fry flame outlet channel (101) enclose a buffer cavity (1011). The gas distribution orifice (306) is located above the buffer cavity (1011).

13. The burner of claim 12, wherein The first region (K1) of the diverter plate (34) is projected vertically into the buffer cavity (1011).

Images