Burner and hob

Abstract

The embodiment of the application discloses a burner and a cooking utensil, relates to the technical field of burners, and aims to solve the problem of air supplement during the combustion of a flame. The burner comprises an outer fire cover, a gas distribution disc, a fan and a furnace body. The outer fire cover is annular, and an outer gas hole is arranged on the outer fire cover. A first gas distribution disc and the outer fire cover form a first cavity, and the outer gas hole is in communication with the first cavity. An air inlet cavity and an outer side gas outlet hole in communication with the air inlet cavity are arranged on the first gas distribution disc, and the outer side gas outlet hole is located on the side of the outer gas hole away from the center line of the outer fire cover. The outlet of the fan is in communication with the air inlet cavity. The fan delivers air to the air inlet cavity, and the air in the air inlet cavity flows out of the air inlet cavity through the outer side gas outlet hole. The air flowing out of the outer side gas outlet hole flows towards the vicinity of the outer gas hole, thereby providing oxygen for the flame burning at the outer gas hole, so that the flame burning at the outer gas hole obtains sufficient oxygen, the gas is fully combusted, and the thermal efficiency of the burner is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of burners, in particular to a burner and a cooking appliance. BACKGROUND

[0002] In the related art, a burner generally comprises a furnace body, a draft tube connected with the furnace body, a gas distribution disc arranged above the furnace body, and a fire cover arranged above the gas distribution disc. The draft tube is used for introducing the gas and air into the furnace body and into the gas distribution disc, and the mixed gas escapes from the fire cover and is ignited to form a flame. However, the burner in the related art is prone to cause insufficient combustion of the gas, excessive smoke generated by the combustion, and insufficient thermal efficiency of the burner. SUMMARY

[0003] The embodiment of the present application provides a burner and a cooking appliance, which solve the problem of insufficient combustion of the gas and insufficient thermal efficiency of the burner.

[0004] To achieve the above-mentioned purpose, the embodiment of the present application adopts the following technical scheme:

[0005] In a first aspect, the embodiment of the present application provides a burner, which comprises an outer fire cover, a first gas distribution disc, a fan, and a furnace body. The outer fire cover is annular, and an outer gas hole is arranged on the outer fire cover. The first gas distribution disc and the outer fire cover enclose a first cavity, and the outer gas hole is in communication with the first cavity. The first gas distribution disc is provided with an air inlet cavity and an outer side gas outlet hole in communication with the air inlet cavity. The air inlet cavity and the first cavity are independently arranged. The outer side gas outlet hole is located on a side of the outer gas hole away from a center line of the outer fire cover. The outlet of the fan is in communication with the air inlet cavity. The furnace body comprises a main draft tube, and the main draft tube is in communication with the first cavity and used for introducing the gas into the first cavity.

[0006] The burner provided by the embodiment of the present application is annular, and the outer gas hole is arranged on the outer fire cover. The first gas distribution disc and the outer fire cover enclose the first cavity, and the outer gas hole is in communication with the first cavity. The first gas distribution disc is provided with the air inlet cavity and the outer side gas outlet hole in communication with the air inlet cavity. The air inlet cavity and the first cavity are independently arranged. The outer side gas outlet hole is located on a side of the outer gas hole away from the center line of the outer fire cover. The outlet of the fan is in communication with the air inlet cavity. In use, the main draft tube delivers the gas to the first cavity, and the gas escapes from the first cavity through the outer gas hole and is ignited. At the same time, the fan delivers the air to the air inlet cavity, and the air in the air inlet cavity flows out from the air inlet cavity through the outer side gas outlet hole. Since the outer side gas outlet hole is located on a side of the outer gas hole away from the center line of the outer fire cover, the air flowing out from the outer side gas outlet hole flows towards the outer gas hole, thereby providing oxygen for the flame burning at the outer gas hole, so as to ensure sufficient combustion of the gas and improve the thermal efficiency of the burner.

[0007] Optionally, the center line of the outer fire cover, the center line of the outer gas hole, and the center line of the outer side gas hole are located in the same plane.

[0008] Through the above arrangement, the corresponding outer gas hole and the outer side gas hole are distributed on the same radius of the outer fire cover, so that each outer side gas hole can provide air for each outer gas hole, thereby ensuring that the air supplement amount of each outer gas hole is the same.

[0009] Optionally, the center line of the outer side gas hole is parallel to the center line of the outer fire cover.

[0010] Through the above arrangement, the direction of air blown from the outer side gas hole is vertically upward, avoiding direct blowing of air to the flame or completely blowing to the flame.

[0011] Optionally, the burner further comprises an inner fire cover and a second gas distribution disc, the inner fire cover is provided with an inner gas hole, the outer fire cover is arranged around the inner fire cover, the second gas distribution disc is located at the center of the first gas distribution disc, the inner fire cover and the second gas distribution disc form a second cavity, the inner gas hole is in communication with the second cavity; the furnace body further comprises a secondary injection pipe, the secondary injection pipe is in communication with the second cavity, and the secondary injection pipe is used for introducing gas into the second cavity; the first gas distribution disc is further provided with a radial gas hole, the radial gas hole is in communication with the air inlet cavity, the radial gas hole is arranged on the side wall of the first gas distribution disc close to the center line of the outer fire cover, the radial gas hole is arranged towards the inner gas hole, and the center line of the radial gas hole is perpendicular to the center line of the outer fire cover.

[0012] Through the above arrangement, the radial gas hole is in communication with the air inlet cavity, and air entering the air inlet cavity can also be blown out from the air inlet cavity to the inner gas hole through the radial gas hole. The air blown out from the radial gas hole provides oxygen for the flame burning at the inner gas hole, can supplement air when the flame burns at the inner gas hole, and ensures that the flame at the inner gas hole burns fully.

[0013] Optionally, the first gas distribution disc is provided with a boss, the boss is located on the side wall of the first gas distribution disc close to the center line of the outer fire cover, and the radial gas hole is arranged on the boss.

[0014] Through the above arrangement, the radial gas hole is arranged on the boss, so that the radial gas hole can be closer to the inner gas hole on the inner fire cover, reducing the loss of air blown from the radial gas hole to the inner gas hole, increasing the amount of air blown to the inner gas hole, and enabling the flame at the inner gas hole to burn more fully.

[0015] Optionally, the boss is further provided with an axial gas hole, the axial gas hole is in communication with the air inlet cavity, and the center line of the axial gas hole is parallel to the center line of the outer fire cover.

[0016] Through the above arrangement, the axial air outlet hole can supply air to the flame at the outer gas hole and the flame at the inner gas hole at the same time, further providing oxygen to the flame at the inner gas hole and the flame at the outer gas hole, further ensuring that the flame at the inner gas hole and the flame at the outer gas hole burn fully, further improving the combustion efficiency of the flame at the inner gas hole and the flame at the outer gas hole, and further reducing harmful gases generated by the flame.

[0017] Optionally, the outer air outlet hole is provided in plurality, and the plurality of outer air outlet holes are arranged at intervals around the outer fire cover center line; the radial air outlet hole is provided in plurality, and the plurality of radial air outlet holes are arranged at intervals around the outer fire cover center line; and the axial air outlet hole is provided in plurality, and the plurality of axial air outlet holes are arranged at intervals around the outer fire cover center line.

[0018] Through the above arrangement, oxygen can be provided to the flame at the inner gas hole and the flame at the outer gas hole at the same time, so that the oxygen provided to the flame at each inner gas hole and the flame at the outer gas hole can burn fully.

[0019] Optionally, the air inlet cavity includes a first air inlet cavity and a second air inlet cavity, the first air inlet cavity is located at the lower part of the first cavity, the radial air outlet hole is communicated with the first air inlet cavity, the second air inlet cavity is located at the side of the first cavity away from the outer fire cover center line, and the outer air outlet hole is communicated with the second air inlet cavity, wherein the first air inlet cavity is communicated with the second air inlet cavity.

[0020] Through the above arrangement, the first air inlet cavity is located at the lower part of the first cavity, and the second air inlet cavity is located at the side of the first cavity away from the outer fire cover center line, so that the structure of the first air distribution disc is more compact.

[0021] Optionally, the outlet of the fan is communicated with the first air inlet cavity, and the outlet of the fan is indirectly communicated with the second air inlet cavity through the first air inlet cavity.

[0022] Through the above arrangement, in the process of air entering the air inlet cavity driven by the fan, the air outlet amount of the radial air outlet hole communicated with the first air inlet cavity is increased, and the combustion efficiency of the flame at the inner gas hole is improved.

[0023] In a second aspect, the embodiment of the present application also provides a stove, which comprises a bottom shell, a fixed plate, a gas pipe and the above-mentioned burner, the bottom shell and the fixed plate enclose a containing cavity, the burner is located in the containing cavity, the fixed plate is provided with a mounting hole, the outer fire cover extends outwardly from the mounting hole, one end of the gas pipe is used for communicating with a gas source, and the other end of the gas pipe is communicated with the main suction pipe of the outer fire cover.

[0024] The stove provided by the embodiment of the present application has the following advantages: the burner is located in the accommodating cavity formed by the bottom shell and the fixing plate, the outer fire cover extends outward from the mounting hole, the outer fire cover is annular, the outer gas hole is arranged on the outer fire cover, the first gas distribution disc and the outer fire cover form the first cavity, the outer gas hole is communicated with the first cavity, the air inlet cavity and the outer side gas outlet hole communicated with the air inlet cavity are arranged on the first gas distribution disc, the air inlet cavity is independently arranged from the first cavity, and the outer side gas outlet hole is located on the side of the outer gas hole away from the center line of the outer fire cover; the outlet of the fan is communicated with the air inlet cavity. In use, the main suction pipe delivers the gas to the first cavity, and the gas escapes from the first cavity through the outer gas hole and is ignited, at the same time, the fan delivers the air to the air inlet cavity, the air in the air inlet cavity flows out from the air inlet cavity through the outer side gas outlet hole, the air flowing out from the outer side gas outlet hole flows to the vicinity of the outer gas hole, oxygen is provided for the flame burning at the outer gas hole, and the flame burning at the outer gas hole obtains sufficient oxygen, so that the gas is fully burned, and the thermal efficiency of the burner is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The burner axial side provided by the embodiment of the present application Figure 1 ;

[0026] Figure 2 The top view of the burner provided by the embodiment of the present application

[0027] Figure 3 The sectional view in A-A direction Figure 2

[0028] Figure 4 The connection schematic view of the first gas distribution disc and the second gas distribution disc provided by the embodiment of the present application

[0029] Figure 5 The top view of the first gas distribution disc and the second gas distribution disc provided by the embodiment of the present application

[0030] Figure 6 The sectional view in D-D direction Figure 5

[0031] Figure 7 The sectional view in C-C direction Figure 5

[0032] Figure 8 The sectional view in B-B direction Figure 2

[0033] Figure 9 The axial side view of the furnace body provided by the embodiment of the present application

[0034] Figure 10 The top view of the furnace body provided by the embodiment of the present application ​​​​

[0035] Figure 11 is Figure 9 a sectional view in the direction of E-E;

[0036] Figure 12 a left view of the furnace body provided by the embodiment of the present application;

[0037] Figure 13 is Figure 9 a sectional view in the direction of F-F;

[0038] Figure 14 a burner shaft side view provided by the embodiment of the present application Figure 2 ;

[0039] Figure 15 a burner shaft side view provided by the embodiment of the present application Figure 3 ;

[0040] Figure 16 is Figure 13 an enlarged view at G;

[0041] Figure 17 a burner shaft side view provided by the embodiment of the present application Figure 4 ;

[0042] Figure 18 is Figure 13 an enlarged view at H;

[0043] Figure 19 a hob shaft side view provided by the embodiment of the present application;

[0044] Figure 20 a hob explosion view provided by the embodiment of the present application.

[0045] BRIEF DESCRIPTION OF DRAWINGS 1. Burner; 2. Furnace body; 3. First gas distribution disc; 4. Outer fire cover; 5. Main ejector pipe; 6. First cavity; 7. Outer gas hole; 8. Ignition needle; 9. Inner fire cover; 10. Auxiliary ejector pipe; 11. Second cavity; 12. Inner gas hole; 13. Ring body; 14. Ventilation pipe; 15. Main mixing cavity; 16. Auxiliary mixing cavity; 17. Projection; 18. Transition pipe; 19. First connecting end; 20. Second connecting end; 21. Fan; 22. Intake cavity; 23. Outer side gas outlet hole; 24. Ring body; 25. Connecting rib; 26. Second annular groove; 27. Radial gas outlet hole; 28. Boss; 29. Axial gas outlet hole; 30. First intake cavity; 31. Second intake cavity; 32. Hob; 33. Bottom shell; 34. Fixed plate; 35. Mounting hole; 36. Bracket; 37. Control valve; 38. Knob; 39. Body; 40. Column; 41. First annular groove; 42. Second gas distribution disc. DETAILED DESCRIPTION

[0046] In the description of the application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0047] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0048] In the description of the application, it needs to be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. In addition, when describing pipelines or channels, "connecting" and "connecting" in the application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0049] In the embodiments of the application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present concepts in a concrete manner. In the embodiments of the application, any embodiment or design presented as "exemplary" or "for example" should not be interpreted as being more preferred or advantageous than other embodiments or design solutions.

[0050] As used herein, "about", "approximately", or "around" includes the stated value and the average value within an acceptable range of deviation from the specific value, wherein the acceptable range of deviation is determined by a person of ordinary skill in the art considering the measurement being discussed and the error related to the measurement of the specific quantity (i.e. the limitation of the measurement system).

[0051] The embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0052] Please refer to Figures 1 to 4The embodiment of the present application provides a burner 1, which comprises a furnace body 2, a first gas distribution disc 3 and an outer fire cover 4, the furnace body 2 comprises a main ejector pipe 5, the outer fire cover 4 can be annular, the first gas distribution disc 3 can also be annular, and the center line of the first gas distribution disc 3 and the center line of the outer fire cover 4 can be arranged in a same line. The outer fire cover 4 covers the upper part of the first gas distribution disc 3, and the first gas distribution disc 3 and the outer fire cover 4 form a first cavity 6. Exemplarily, a first annular groove 41 can be arranged on the lower surface of the outer fire cover 4, and correspondingly, a second annular groove 26 can be arranged on the upper surface of the first gas distribution disc 3, the center line of the first annular groove 41 and the center line of the second annular groove 26 are arranged in a same line with the center line of the outer fire cover 4, and when the outer fire cover 4 covers the first gas distribution disc 3, the first annular groove 41 and the second annular groove 26 form the first cavity 6.

[0053] It can be understood that the outer fire cover 4 and the first gas distribution disc 3 can be connected through bolt connection or clamping connection, and the embodiment of the present application does not limit this.

[0054] In the above implementation manner, one end of the main ejector pipe 5 is in communication with the first cavity 6, and the other end of the main ejector pipe 5 can be in communication with a gas source through a gas pipe (not shown) to introduce gas into the first cavity 6. The gas source can include a pipeline for conveying natural gas or a gas tank and other devices capable of providing gas. The outer fire cover 4 is provided with an outer gas hole 7, and the outer gas hole 7 is in communication with the first cavity 6. After the gas enters the first cavity 6 through the main ejector pipe 5, it escapes from the first cavity 6 through the outer gas hole 7. For example, Figure 1 In the above implementation manner, the burner 1 further comprises an ignition needle 8, the ignition needle 8 can be arranged in the middle of the annular outer fire cover 4, and the ignition needle 8 can be arranged close to the outer gas hole 7, the ignition needle 8 is used for releasing an electric arc, and the gas is ignited after contacting the electric arc generated by the ignition needle 8 when escaping from the first cavity 6, and then continues to burn at the outer gas hole 7.

[0055] In the above implementation manner, the outer gas hole 7 can be provided with a plurality of outer gas holes 7, and the plurality of outer gas holes 7 are arranged at intervals around the center line of the outer fire cover 4. The number of the outer gas holes 7 can be 20-50, for example, the number of the outer gas holes 7 can be 20, 30, 42, 50 or the like. In the embodiment in which the outer gas hole 7 is provided with 42 outer gas holes 7, the 42 outer gas holes 7 are arranged at equal intervals around the center line of the outer fire cover 4, so as to ensure that when a cooking utensil is arranged above the burner 1, the flame at the outer gas hole 7 can uniformly heat the bottom of the cooking utensil.

[0056] The outer gas hole 7 can be arranged in a strip shape, and the width of the outer gas hole 7 can be between 0.5 mm and 1.5 mm, for example, the width of the outer gas hole 7 can be 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm or the like.

[0057] Continuing to refer toFigure 3 and Figure 4 In some embodiments, the burner 1 further comprises an inner fire cap 9 and a second gas distribution disc 42, the outer fire cap 4 is arranged around the inner fire cap 9 (i.e. the inner fire cap 9 is located at the center of the annular outer fire cap 4); in the implementation where the first gas distribution disc 3 is annular, the first gas distribution disc 3 can be arranged around the second gas distribution disc 42 (i.e. the second gas distribution disc 42 is located at the center of the annular first gas distribution disc 3). The inner fire cap 9 covers the second gas distribution disc 42, and the second gas distribution disc 42 and the inner fire cap 9 form a second cavity 11. For example, the top surface of the second gas distribution disc 42 can be provided with a third annular groove (not shown), and correspondingly, the lower surface of the inner fire cap 9 is provided with a fourth annular groove (not shown), when the inner fire cap 9 covers the second gas distribution disc 42, the third annular groove and the fourth annular groove form the second cavity 11. The furnace body 2 can further comprise a secondary injection pipe 10, the secondary injection pipe 10 is in communication with the second cavity 11, and the secondary injection pipe 10 is used to communicate with the gas pipe to introduce gas into the second cavity 11. The inner fire cap 9 is provided with an inner gas hole 12, the inner gas hole 12 is in communication with the second cavity 11, after the gas enters the second cavity 11 through the secondary injection pipe 10, it escapes from the second cavity 11 through the inner gas hole 12, when the gas escapes from the second cavity 11 and contacts the electric arc generated by the ignition needle 8, it is ignited, and then continues to burn at the outer gas hole 7. In this way, during use, flames can be formed on the inner gas hole 12 and the outer gas hole 7 at the same time, thereby improving the power of the burner 1.

[0058] It can be understood that the inner fire cap 9 and the second gas distribution disc 42 can be connected by clamping or bolt connection, and the embodiments of the present application do not limit this.

[0059] In the above implementation, the inner gas hole 12 is provided with a plurality of inner gas holes 12, which are arranged at intervals around the center line of the inner fire cap 9. For example, the inner gas hole 12 can be provided with 20 or 25, and the plurality of inner gas holes 12 are uniformly arranged at intervals around the center line of the inner fire cap 9, thereby achieving uniform heating of the central part of the pot, and the inner gas hole 12 cooperates with the outer gas hole 7 to improve the power of the burner 1.

[0060] The inner gas hole 12 can be circular, and the diameter of the inner gas hole 12 can be between 1.5mm and 2.6mm, for example, the diameter of the inner gas hole 12 can be 1.5mm, 1.8mm, 2.0mm, 2.5mm, 2.6mm, etc.

[0061] Referring to Figures 4 to 7 In the above implementation, the first gas distribution disc 3 and the second gas distribution disc 42 can be connected by the connecting rib 25, the connecting rib 25 can be located between the first gas distribution disc 3 and the second gas distribution disc 42, and the connecting rib 25 can be provided with a channel in communication with the first cavity 6, referring to Figure 7The end of the channel near the second gas distribution plate 42 is connected to the main ejector tube 5. With this arrangement, the main ejector tube 5 and the auxiliary ejector tube 10 can both be located near the second gas distribution plate 42 to improve the structural compactness of the burner.

[0062] Reference Figures 8 to 11 The furnace body 2 also includes a main body 39 and a column 40. The main body 39 has a main mixing chamber 15 inside, and the first end of the main body 39 ( Figure 11 The top of the indicated position forms a first opening, which is connected to the channel in the connecting rib 25. The main ejector tube 5 is connected to the main mixing chamber 15. The column 40 is set in the main mixing chamber 15. The center line of the column 40 is perpendicular to the plane where the first opening is located. The column 40 is provided with a secondary mixing chamber 16. The end of the column 40 near the first opening has a second opening, which is connected to the second chamber 11.

[0063] For example, refer to Figure 8 The second air distribution plate 42 may be equipped with a vent pipe 14, which may be located at the lower part of the second air distribution plate 42 and communicates with the second cavity 11. The second air distribution plate 42 also includes a ring body 13, which surrounds the outside of the vent pipe 14, forming a ring channel between the ring body 13 and the vent pipe 14. The ring channel communicates with the channel in the connecting rib 25. The first end of the main body 39 may be connected to the ring body 13 to realize the communication between the ring channel and the main mixing cavity 15. At the same time, the vent pipe 14 communicates with the second opening to realize the communication between the vent pipe 14 and the secondary mixing cavity 16.

[0064] In some embodiments, the body 39 has a second end disposed opposite to the first end, the second end being the end of the body 39 that is away from the first gas distribution plate 3; a portion of the column 40 extends out from the second end, and a third opening communicating with the secondary mixing chamber 16 is provided on the column 40 extending out from the second end, and the secondary ejector tube 10 is communicating with the third opening.

[0065] This configuration allows the protrusion 17 formed by the intersection of the secondary ejector tube 10 and the column 40 to be located outside the main mixing chamber 15, preventing the protrusion 17 at the intersection of the secondary ejector tube 10 and the secondary mixing chamber 16 from being located inside the main mixing chamber 15, thereby affecting the flow of gas from the main ejector tube 5 to the main mixing chamber 15.

[0066] Reference Figure 9 In the above implementation, a transition pipe 18 is provided between the main ejector tube 5 and the main mixing chamber 15. The transition pipe 18 connects the main ejector tube 5 and the main mixing chamber 15. (Refer to...) Figure 12 and Figure 13, the transition pipe 18 has a first connecting end 19 connected with the main ejector pipe 5 and a second connecting end 20 connected with the main mixing chamber 15, the transition pipe 18 is arranged obliquely so that the first connecting end 19 is farther away from the first end (the top end) than the second connecting end 20; at this time, the center line of the transition pipe 18 is inclined relative to the center line of the column 40. In this way, when the gas passes through the transition pipe 18 and enters the main mixing chamber 15, the direction of the gas flow is obliquely upward, instead of being perpendicular to the outer wall of the column 40, which can reduce the resistance of the outer wall of the column 40 to the gas entering the main mixing chamber 15, and improve the combustion efficiency of the flame.

[0067] Please refer to Figure 3 , Figure 7 , Figure 14 , Figure 15 , Figure 16 , the burner 1 provided by the embodiment of the present application further comprises a fan 21, the first gas distribution disc 3 is provided with an air inlet chamber 22 and an outer air outlet hole 23 in communication with the air inlet chamber 22, wherein the air inlet chamber 22 and the first chamber 6 are independently arranged, that is, the air inlet chamber 22 and the first chamber 6 are arranged separately and are not in communication. The outer air outlet hole 23 is located on the side of the outer gas hole 7 away from the center line of the outer fire cap 4, and the outlet of the fan 21 is in communication with the air inlet chamber 22. When the fan 21 is working, air is introduced into the fan 21 from the inlet of the fan 21, and the air is sent into the air inlet chamber 22 through the outlet of the fan 21. The air in the air inlet chamber 22 is blown out through the outer air outlet hole 23 and towards the flame burning at the outer gas hole 7, so as to provide sufficient air for the flame burning, make the flame burn more fully, improve the combustion efficiency of the flame, and further reduce the harmful gases (carbon monoxide, smoke, etc.) generated by the flame burning.

[0068] The burner 1 provided by the embodiment of the present application, the outer fire cap 4 is annular, the outer fire cap 4 is provided with an outer gas hole, the first gas distribution disc 3 and the outer fire cap 4 form a first chamber 6, the outer gas hole 7 is in communication with the first chamber 6, the first gas distribution disc 3 is provided with an air inlet chamber 22 and an outer air outlet hole 23 in communication with the air inlet chamber 22, the air inlet chamber 22 and the first chamber 6 are independently arranged, and the outer air outlet hole 23 is located on the side of the outer gas hole 7 away from the center line of the outer fire cap 4; the outlet of the fan 21 is in communication with the air inlet chamber 22. In use, the main ejector pipe 5 delivers gas to the first chamber 6, and the gas escapes from the first chamber 6 through the outer gas hole 7 and is ignited, at the same time, the fan 21 delivers air to the air inlet chamber 22, and the air in the air inlet chamber 22 flows out from the air inlet chamber 22 through the outer air outlet hole 23. Since the outer air outlet hole 23 is located on the side of the outer gas hole 7 away from the center line of the outer fire cap 4, the air flowing out from the outer air outlet hole 23 will flow towards the outer gas hole, so as to provide oxygen for the flame burning at the outer gas hole 7, and further make the flame burning at the outer gas hole 7 obtain sufficient oxygen, so as to ensure the gas to burn fully and improve the thermal efficiency of the burner.

[0069] Please refer toFigure 14 and Figure 16 In the above implementation, the outer air outlet holes 23 can be provided in plurality, and the plurality of outer air outlet holes 23 are arranged at intervals around the center line of the outer fire cap 4. In this way, the plurality of outer air outlet holes can simultaneously deliver air to the outer fire cap, so as to ensure that the flames at each outer gas hole of the outer fire cap can be fully burned.

[0070] For example, one outer air outlet hole can correspond to one outer gas hole, and the outer air outlet hole 23 and the corresponding outer gas hole 7 are arranged on the same radius of the outer fire cap 4, that is, the center line of the outer fire cap 4, the center line of the outer gas hole 7, and the center line of the corresponding outer air outlet hole 23 are located in the same plane.

[0071] In the above implementation, the number of outer air outlet holes 23 can be 20-60, for example, the outer air outlet holes 23 can be provided in 20, 30, 42, 50, etc. In the embodiment in which the outer air outlet holes 23 are 42, the 42 outer air outlet holes 23 can be arranged at intervals around the center line of the outer fire cap 4, and each outer air outlet hole 23 corresponds to one outer gas hole 7. Among them, the outer air outlet hole 23 can be circularly arranged, and the diameter of the outer air outlet hole 23 can be 1-2 mm, for example, the diameter of the outer air outlet hole 23 is 1 mm, 1.5 mm, 2 mm.

[0072] Through the above arrangement, the corresponding outer gas hole 7 and outer air outlet hole 23 are distributed on the same radius of the outer fire cap 4, so that each outer air outlet hole 23 can provide air for each outer gas hole 7, thereby ensuring that the air supply amount of each outer gas hole 7 is the same.

[0073] In the embodiment of the application, the center line of the outer air outlet hole 23 is parallel to the center line of the outer fire cap 4. For example, the center line of the outer air outlet hole 23 and the center line of the outer fire cap 4 can be perpendicular to the horizontal plane.

[0074] In the above implementation, the utensil is arranged above the burner 1, and in the process of heating the bottom of the utensil by the flame at the outer gas hole 7, the burning direction of the flame will extend away from the center line of the outer fire cap 4 after being blocked by the utensil, that is, the flame at the outer gas hole 7 will be inclined to the direction of the outer air outlet hole 23; and the center line of the outer air outlet hole 23 is parallel to the center line of the outer fire cap 4, that is, the direction in which the air is blown out of the outer air outlet hole 23 is along the vertical direction and is blown out from bottom to top, and can be blown to the inclined flame, so as to provide sufficient air for the burning flame, make the flame burn more fully, improve the burning efficiency of the flame, and further reduce harmful gases generated by the flame burning.

[0075] In some embodiments, the outer air outlet hole 23 can also be located between two adjacent outer gas holes 7, and air blown from the outer air outlet hole 23 in the vertical direction from bottom to top can be blown between the two adjacent outer gas holes 7, that is, the air can be blown into the gap between the two adjacent flames, so that the flames can burn more fully, improve the combustion efficiency of the flames, and thus reduce harmful gases generated by the flame combustion.

[0076] Through the above arrangement, the direction of air blown from the outer air outlet hole 23 is vertically upward, avoiding direct blowing of air to the flame or not blowing to the flame at all.

[0077] In the above implementation, the center line of the outer air outlet hole 23 can also be arranged not parallel to the center line of the outer fire cover 4, that is, the center line of the outer air outlet hole 23 can be arranged inclined relative to the center line of the outer fire cover 4; for example, the center line of the outer air outlet hole 23 is inclined so that the air flowing out of the outer air outlet hole 23 gradually approaches the center line of the outer fire cover 4 during the flow, so that the air can contact the flame at the outer gas hole to ensure full combustion.

[0078] Referring to Figure 17 and Figure 18 In the embodiment of the present application, the first gas distribution disc 3 is also provided with a radial air outlet hole 27, which is in communication with the air inlet chamber 22 (as shown in Figure 3 The radial air outlet hole 27 is arranged on the side wall of the first gas distribution disc 3 close to the center line of the outer fire cover 4, and the radial air outlet hole 27 is arranged towards the inner gas hole 12.

[0079] In the above implementation, the radial air outlet hole 27 is located on the side wall of the first gas distribution disc 3 close to the center line of the outer fire cover 4, and the radial air outlet hole 27 is arranged towards the inner gas hole 12. When the fan 21 is working, air is introduced into the fan 21 from the inlet of the fan 21, and the air is sent into the air inlet chamber 22 through the outlet of the fan 21. The air entering the air inlet chamber 22 can also be blown out through the radial air outlet hole 27 and blown towards the flame burning at the inner gas hole 12, so as to provide sufficient air for the flame burning at the inner gas hole 12, improve the combustion efficiency of the flame, and thus reduce harmful gases generated by the flame combustion.

[0080] Through the above arrangement, the radial air outlet hole 27 is in communication with the air inlet chamber 22, and the air entering the air inlet chamber 22 can also be blown out from the air inlet chamber 22 to the inner gas hole 12 through the radial air outlet hole 27. The air blown out of the radial air outlet hole 27 provides oxygen for the flame burning at the inner gas hole 12, so as to supplement air when the flame burns at the inner gas hole 12, and ensure full combustion of the flame at the inner gas hole 12.

[0081] It can be understood that the radial air outlet hole 27 is arranged towards the inner combustion hole 12, so that the air flowing out of the radial air outlet hole 27 flows towards the inner combustion hole 12 to provide oxygen for the flame at the inner combustion hole 12 to ensure that the flame at the inner combustion hole 12 burns fully; for example, the center line of the radial air outlet hole 27 can be perpendicular to the center line of the outer flame cover 4, of course, the center line of the radial air outlet hole 27 can also be relative to the center line of the outer flame cover 4, so that the air flowing out of the radial air outlet hole 27 gradually approaches the center line of the outer flame cover 4 during the flow, that is, the air gradually flows towards the radial air outlet hole 27.

[0082] In the above implementation, the radial air outlet hole 27 is provided in multiple, the number of radial air outlet holes 27 and outer side air outlet holes 23 can be the same, and the radial air outlet holes 27 are arranged around the center line of the outer flame cover 4 with intervals. In some implementations, since the number of radial air outlet holes 27 and outer side air outlet holes 23 can be the same, the number of radial air outlet holes 27 can be the same as the number of inner combustion holes 12, and each radial air outlet hole 27 corresponds to an inner combustion hole 12, accordingly, one radial air outlet hole 27 can provide oxygen for the corresponding inner combustion hole 12 to ensure that the flame at each inner combustion hole 12 can burn fully.

[0083] In the above implementation, the number of radial air outlet holes 27 can be 20-60, and the number of inner combustion holes 12 can also be 20-60, only the number of radial air outlet holes 27 can be the same as the number of inner combustion holes 12 is required. The radial air outlet hole 27 can be provided with 20, 30, 42, 50, etc., and the inner combustion hole 12 can also be provided with 20, 30, 42, 50, etc.

[0084] For example, the radial air outlet hole 27 and the inner combustion hole 12 can each be 42, and the 42 radial air outlet holes 27 are uniformly and evenly arranged around the center line of the outer flame cover 4, and each radial air outlet hole 27 corresponds to an inner combustion hole 12. Among them, the radial air outlet hole 27 can be circularly arranged, and the diameter of the radial air outlet hole 27 can be 1-2 mm, for example, the diameter of the radial air outlet hole 27 is 1 mm, 1.5 mm, 2 mm.

[0085] Continuing to refer to Figure 17 and Figure 18 In the embodiment of the present application, the first gas distribution disc 3 is provided with a boss 28, the boss 28 is located on the side wall of the first gas distribution disc 3 close to the center line of the outer flame cover 4, and the radial air outlet hole 27 is arranged on the boss 28. Through the above arrangement, the radial air outlet hole 27 arranged on the boss 28 is close to the inner flame cover 9, which improves the efficiency of the air providing oxygen to the flame at the inner combustion hole 12.

[0086] In the above implementation, the protrusion 28 is arranged on the side wall of the first gas distribution disc 3 close to the center line of the outer fire cap 4, and the other end of the protrusion 28 extends between the outer fire cap 4 and the inner fire cap 9 in the top view of the first gas distribution disc 3. The radial air outlet hole 27 can also be arranged on the side of the protrusion 28 close to the inner fire cap 9, so that the radial air outlet hole 27 is closer to the inner combustion gas hole 12 on the inner fire cap 9, the loss of air during blowing from the radial air outlet hole 27 to the inner combustion gas hole 12 is reduced, the amount of air blowing to the inner combustion gas hole 12 is increased, and the flame burning at the inner combustion gas hole 12 is more sufficient.

[0087] With reference to the above Figure 17 and Figure 18 In the embodiment of the present application, the protrusion 28 is further provided with an axial air outlet hole 29, the axial air outlet hole 29 is in communication with the air inlet cavity 22, and the center line of the axial air outlet hole 29 is parallel to the center line of the outer fire cap 4.

[0088] In the above implementation, since the end of the protrusion 28 away from the first gas distribution disc 3 extends between the outer fire cap 4 and the inner fire cap 9 in the top view of the first gas distribution disc 3, the axial air outlet hole 29 can be arranged on the protrusion 28, the center line of the axial air outlet hole 29 is parallel to the center line of the outer fire cap 4, and the air blown out from the axial air outlet hole 29 can be blown upwards between the outer fire cap 4 and the inner fire cap 9, thereby simultaneously supplying air to the flames at the outer combustion gas hole 7 and the inner combustion gas hole 12, further providing oxygen to the flames at the inner combustion gas hole 12 and the outer combustion gas hole 7, further ensuring that the flames at the inner combustion gas hole 12 and the outer combustion gas hole 7 burn fully, further improving the combustion efficiency of the flames at the inner combustion gas hole 12 and the outer combustion gas hole 7, and further reducing harmful gases generated by flame combustion.

[0089] In the embodiment of the present application, the axial air outlet hole 29 is provided with a plurality of axial air outlet holes 29 arranged around the center line of the outer fire cap 4. In this way, the plurality of axial air outlet holes 29 can simultaneously provide oxygen to the flames at the inner combustion gas hole 12 and the outer combustion gas hole 7, so as to ensure that the oxygen provided to the flames at each inner combustion gas hole 12 and outer combustion gas hole 7 can burn fully.

[0090] In the above implementation, the number of axial air outlet holes 29 can be 20-60, and the number of inner combustion air holes 12 can also be 20-60, as long as the number of axial air outlet holes 29 is limited to be the same as the number of inner combustion air holes 12. For example, the axial air outlet holes 29 can be provided in 20, 30, 42, 50, etc. In the embodiment in which the axial air outlet holes 29 are 42, the 42 axial air outlet holes 29 are arranged on the boss 28 around the center line of the outer fire cover 4 at intervals, and each axial air outlet hole 29 is arranged in correspondence with an inner combustion air hole 12. Among them, the axial air outlet holes 29 can be circularly arranged, and the diameter of the axial air outlet holes 29 can be 1-2 mm, for example, the diameter of the axial air outlet holes 29 is 1 mm, 1.5 mm, 2 mm.

[0091] With reference to Figure 7 In the embodiment of the present application, the air inlet cavity 22 includes a first air inlet cavity 30 and a second air inlet cavity 31. The first air inlet cavity 30 is located at the lower part of the first cavity 6, and the radial air outlet hole 27 is in communication with the first air inlet cavity 30. The second air inlet cavity 31 is located on the side of the first cavity 6 away from the center line of the outer fire cover 4, and the outer side air outlet hole 23 is in communication with the second air inlet cavity 31. Among them, the first air inlet cavity 30 is in communication with the second air inlet cavity 31. In use, the air in the first air inlet cavity 30 flows out through the radial air outlet hole 27 to provide air to the flame at the inner combustion air hole 12; at the same time, the air in the second air inlet cavity 31 flows out through the outer side air outlet hole 23 to provide air to the flame at the outer combustion air hole 7.

[0092] Through the above arrangement, the first air inlet cavity 30 is located at the lower part of the first cavity 6, and the second air inlet cavity 31 is located on the side of the first cavity 6 away from the center line of the outer fire cover 4, so that the structure of the first air distribution disc is more compact.

[0093] In the implementation in which the axial air outlet holes 29 are provided on the first air distribution disc 3, the axial air outlet holes 29 are in communication with the first air inlet cavity 30, and the air brought into the air inlet cavity 22 by the fan 21 can also be blown out through the axial air outlet holes 29 in communication with the first air inlet cavity 30, while supplementing air to the flames on the outer fire cover 4 and the inner fire cover 9, so that the flames burn more fully, improve the overall flame combustion efficiency, and thus reduce the harmful gases generated by flame combustion.

[0094] With reference to Figure 3 and Figure 7 In the embodiment of the present application, the outlet of the fan 21 is in communication with the first air inlet cavity 30.

[0095] In the above implementation, since the radial air outlet hole 27 is in communication with the first air inlet cavity 30, when the outlet of the fan 21 is in communication with the first air inlet cavity 30, the radial air outlet hole 27 is closer to the outlet of the fan 21 than the outer air outlet hole 23, thereby increasing the amount of air blown by the radial air outlet hole 27 to the inner fire cover 9, making the flame at the inner fire cover 9 burn more fully, improving the combustion efficiency of the flame, and thereby reducing harmful gases produced by the flame combustion.

[0096] Through the above arrangement, during the process of the fan 21 driving air into the air inlet cavity 22, the air outlet amount from the radial air outlet hole 27 in communication with the first air inlet cavity 30 is increased, and the combustion efficiency of the flame on the inner combustion air hole 12 is improved.

[0097] In the above implementation, the outlet of the fan 21 can also be in communication with the second air inlet cavity 31. Since the outer air outlet hole 23 is in communication with the second air inlet cavity 31, when the outlet of the fan 21 is in communication with the second air inlet cavity 31, the outer air outlet hole 23 is closer to the outlet of the fan 21 than the radial air outlet hole 27, thereby increasing the amount of air blown by the outer air outlet hole 23 to the outer fire cover 4, making the flame at the outer fire cover 4 burn more fully, improving the combustion efficiency of the flame, and thereby reducing harmful gases produced by the flame combustion.

[0098] Referring to Figure 19 and 20 , Figure 19 a side view of the stove provided by the embodiment of the present application, Figure 20 an exploded view of the stove provided by the embodiment of the present application. The embodiment of the present application also provides a stove 32 for heating a pot to achieve cooking. Illustratively, the stove 32 can include a gas stove or a natural gas stove, etc., and the embodiment of the present application does not limit this.

[0099] In the embodiment of the present application, the stove 32 includes a bottom shell 33, a fixed plate 34, and the burner 1 in the above-mentioned application embodiment. The bottom shell 33 is arranged on the lower surface of the fixed plate 34, and the bottom shell 33 can be connected with the fixed plate 34 by bolt connection or clamping, etc. The bottom shell 33 and the fixed plate 34 can form an accommodation cavity (not shown), and the burner 1 can be located in the accommodation cavity. The fixed plate 34 is provided with a mounting hole 35, and the outer fire cover 4 extends outwardly from the mounting hole 35. The side of the mounting hole 35 facing outside the accommodation cavity is further provided with a support 36, and the support 36 is used to support the pot.

[0100] In the above implementation manner, the cooktop 32 further comprises a gas pipe (not shown) and a control valve 37, an air inlet of the control valve 37 is communicated with a gas source (not shown), an air outlet of the control valve 37 is communicated with the burner 1 through the gas pipe, and the gas from the gas source can enter the burner 1 through the control valve 37 and the gas pipe to combust on the burner 1, thereby realizing the heating of the pot. Wherein, the gas pipe and the control valve 37 can be arranged in the accommodating cavity, and the bottom shell 33 can protect the gas pipe and the control valve 37, and meanwhile, the compactness of the cooktop 32 can be improved.

[0101] In the above implementation manner, the cooktop 32 further comprises a knob 38, which can be arranged on the fixed plate 34 and connected with the control valve 37 in the accommodating cavity. The knob 38 can comprise a cap (not shown) and a rotating shaft (not shown), the cap is fixedly connected with one end of the rotating shaft, and the other end of the rotating shaft is connected with the control valve 37; when the knob 38 is twisted, the cap drives the rotating shaft to rotate, and the rotating shaft drives the valve port of the control valve 37 to open or close; and the opening degree of the valve port of the control valve 37 can be adjusted according to the rotation angle of the knob 38. For example, as the rotation angle of the knob 38 gradually increases, the opening degree of the valve port of the control valve 37 gradually increases, and the gas flow in the gas pipe gradually increases, so that the combustion power of the burner 1 gradually increases.

[0102] The cooktop 32 provided by the embodiment of the present application is characterized in that the burner 1 is located in the accommodating cavity formed by the bottom shell 33 and the fixed plate 34, the outer fire cover 4 extends outwardly from the mounting hole 35, the outer fire cover 4 is annular, the outer fire cover 4 is provided with an outer gas hole, the first gas distribution disc 3 and the outer fire cover 4 form a first cavity 6, the outer gas hole 7 is communicated with the first cavity 6, the first gas distribution disc 3 is provided with an air inlet cavity 22 and an outer side gas outlet hole 23 communicated with the air inlet cavity 22, the air inlet cavity is independently arranged from the first cavity 6, and the outer side gas outlet hole 23 is located on the side of the outer gas hole 7 away from the center line of the outer fire cover 4; the outlet of the fan 21 is communicated with the air inlet cavity 22. In use, the main suction pipe 5 delivers the gas to the first cavity 6, and the gas escapes from the first cavity 6 through the outer gas hole 7 and is ignited, at the same time, the fan 21 delivers the air to the air inlet cavity 22, and the air in the air inlet cavity flows out from the air inlet cavity 22 through the outer side gas outlet hole 23. Since the outer side gas outlet hole 23 is located on the side of the outer gas hole 7 away from the center line of the outer fire cover 4, the air flowing out from the outer side gas outlet hole 23 flows towards the outer gas hole 7, thereby providing oxygen for the flame burning at the outer gas hole 7, and further ensuring that the flame burning at the outer gas hole 7 obtains sufficient oxygen, so as to ensure the full combustion of the gas and improve the thermal efficiency of the burner 1.

[0103] Although the application has been described in connection with the embodiments thereof with reference to the various drawings, it will be evident in view of the foregoing description that various changes and modifications can be made to the application without departing from the spirit and scope thereof. Accordingly, it is intended that the application not be limited to the described embodiments, but that it include all modifications and alternatives within the scope of the present application. The use of the terms "including", "containing", "comprising", "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The use of the terms "first", "second" and variations thereof herein does not indicate a temporal or chronological order but are used for naming purposes only. The use of the terms "a" and "an" herein does not denote a limitation of quantity but rather denotes the presence of at least one of the referenced item. The use of the indefinite article "a" or "an" herein does not exclude the presence of more than one of the referenced item. The use of the indefinite article "a" or "an" herein does not exclude the presence of more than one of the referenced item. Multiple references to combination with "comprising", "containing", "having" or "including" are not intended to exclude other elements or steps not specifically mentioned. A single processor or other unit can fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0104] Although the application has been described in connection with specific embodiments thereof, it will be evident that many modifications, changes, substitutions and alterations to the application will become apparent to those skilled in the art upon reading this specification and the appended claims. Accordingly, it is intended that the application be limited only by the scope of the claims appended hereto and equivalents thereof. It will be understood by those within the art that, in general, terms used herein, and especially to the immediately preceding description and claims attached hereto, are intended to be given their broadest interpretation consistent with the specification and the patent statutes.

[0105] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A burner, characterized by The burner comprises: an outer fire cover in the shape of a ring, the outer fire cover being provided with an outer gas hole; an inner fire cover provided with an inner gas hole; a first gas distribution disc, the first gas distribution disc and the outer fire cover forming a first cavity, the outer gas hole being in communication with the first cavity, the first gas distribution disc being provided with an air inlet cavity and an outer side gas outlet hole in communication with the air inlet cavity, the air inlet cavity and the first cavity being independently arranged, the outer side gas outlet hole being located on a side of the outer gas hole away from a center line of the outer fire cover; the first gas distribution disc is further provided with a radial gas outlet hole, the radial gas outlet hole being in communication with the air inlet cavity, the radial gas outlet hole being arranged on a side wall of the first gas distribution disc close to the center line of the outer fire cover, the radial gas outlet hole being arranged towards the inner gas hole; the air inlet cavity comprises a first air inlet cavity and a second air inlet cavity, the first air inlet cavity being located at a lower part of the first cavity, the radial gas outlet hole being in communication with the first air inlet cavity, the second air inlet cavity being located on a side of the first cavity away from the center line of the outer fire cover, the outer side gas outlet hole being in communication with the second air inlet cavity, wherein the first air inlet cavity and the second air inlet cavity are in communication; a fan, an outlet of the fan being in communication with the air inlet cavity; and a furnace body, the furnace body comprising a main ejector pipe, the main ejector pipe being in communication with the first cavity, for introducing gas into the first cavity.

2. The burner of claim 1, wherein The center line of the outer fire cover, the center line of the outer gas hole, and the center line of the outer side gas outlet hole are located in the same plane.

3. The burner of claim 2, wherein The center line of the outer side gas outlet hole is parallel to the center line of the outer fire cover.

4. Burner according to any one of claims 1-3, characterized in that The burner further comprises a second gas distribution disc, the outer fire cover being arranged around the inner fire cover, the second gas distribution disc being located at the center of the first gas distribution disc, the inner fire cover and the second gas distribution disc forming a second cavity, the inner gas hole being in communication with the second cavity; the furnace body further comprises a secondary ejector pipe, the secondary ejector pipe being in communication with the second cavity, the secondary ejector pipe being used for introducing gas into the second cavity.

5. The burner of claim 4, wherein The first gas distribution disc is provided with a boss, the boss being located on a side wall of the first gas distribution disc close to the center line of the outer fire cover, the radial gas outlet hole being arranged on the boss.

6. The burner of claim 5, wherein The boss is further provided with an axial gas outlet hole, the axial gas outlet hole being in communication with the air inlet cavity, the center line of the axial gas outlet hole being parallel to the center line of the outer fire cover.

7. The burner of claim 6, wherein The outer side gas outlet hole is provided with a plurality of outer side gas outlet holes, the plurality of outer side gas outlet holes being arranged at intervals around the center line of the outer fire cover; the radial gas outlet hole is provided with a plurality of radial gas outlet holes, the plurality of radial gas outlet holes being arranged at intervals around the center line of the outer fire cover; the axial gas outlet hole is provided with a plurality of axial gas outlet holes, the plurality of axial gas outlet holes being arranged at intervals around the center line of the outer fire cover.

8. The burner of claim 7, wherein The outlet of the fan is in communication with the first air inlet cavity.

9. A hob, characterized in that The burner comprises a bottom shell, a fixed plate, a gas pipe, and the burner of any one of claims 1-8, the bottom shell and the fixed plate forming an accommodating cavity, the burner being located in the accommodating cavity, the fixed plate being provided with a mounting hole, the outer fire cover extending outwards from the mounting hole, one end of the gas pipe being used for connecting a gas source, the other end of the gas pipe being in communication with the main ejector pipe of the outer fire cover.

Images