Inner ring fire cap, burner and gas cooker

Abstract

The present invention discloses an inner ring fire cover, a burner and a gas cooker, wherein the inner ring fire cover comprises: a fire cover body, an opening is formed at one end of the fire cover body, and a step surface is concavely provided on the inner wall of the end of the fire cover body provided with the opening; a top cover is provided on the opening and arranged toward the step surface, and a gap between the top cover and an end surface of the fire cover body close to the top cover forms a flame stabilizing groove; and fire teeth are provided between the top cover and the step surface, and the number of the fire teeth is multiple, and the multiple fire teeth are arranged at intervals along the circumference of the step surface, and flame stabilizing holes are formed between adjacent fire teeth, and the flame stabilizing holes are connected with the flame stabilizing groove. The present invention adopts a step surface provided on the fire cover body, so that the fire teeth are matched with the step surface, and flame stabilizing holes are formed between the fire teeth, so as to realize the output of flame stabilizing airflow, so that the grease flow path is staggered with the position of the flame stabilizing hole, and the grease will not adhere to the flame stabilizing hole, thereby avoiding the clogging of the flame stabilizing hole.

Description

Technical Field

[0001] The present invention relates to the field of kitchen appliances, and particularly to an inner ring burner cap, a burner and a gas stove. Background Art

[0002] During the use of a gas stove by users, due to the oily environment in the kitchen and the problems of oil dripping during cooking and soup overflowing during soup cooking that are prone to occur during use, the fire holes of the inner ring burner cap of the burner are easily blocked by oily soup, resulting in the gas being unable to overflow from the inner ring and unable to ignite, or the flame being lifted off and extinguished due to the blockage of the flame stabilizing holes.

[0003] In the common inner burner cap fire hole structure with the flame stabilizing structure on it, when an oil droplet drops from the top of the burner cap, it flows along the side surface of the inner burner cap into the flame stabilizing groove structure. Since the flame stabilizing groove and the flame stabilizing holes are closed structures all around, after the oil droplet flows in, due to surface tension and viscosity, it will adhere to the wall surface of the fire hole, thus blocking the fire hole, the flame stabilizing structure is damaged, the area of the inner burner cap fire hole is reduced, and the heat intensity of the fire hole increases, which will cause the flame of the inner burner cap fire hole to lift off and lead to the extinguishing phenomenon. Summary of the Invention

[0004] The main object of the present invention is to propose an inner ring burner cap, a burner and a gas stove, aiming to improve the problem that the flame stabilizing holes of the existing inner ring burner cap are easily blocked.

[0005] To achieve the above object, an inner ring burner cap proposed by the present invention includes:

[0006] A burner cap main body, one end of the burner cap main body is formed with an opening, and a stepped surface is recessed on the inner wall of the end of the burner cap main body where the opening is provided;

[0007] A top cover, covering the opening and facing the stepped surface, a gap between the top cover and the end face of the burner cap main body close to the top cover forms a flame stabilizing groove; and

[0008] Burner teeth, arranged between the top cover and the stepped surface, the number of the burner teeth is multiple, the multiple burner teeth are arranged at intervals along the circumference of the stepped surface, and a flame stabilizing hole is formed between adjacent burner teeth, and the flame stabilizing hole is communicated with the flame stabilizing groove.

[0009] Optionally, one end of the burner tooth is connected to the top cover, and the other end is arranged in contact with the stepped surface.

[0010] Optionally, the outer diameter of the circle formed by the burner teeth is smaller than the inner diameter of the end of the burner cap main body where the opening is provided.

[0011] Optionally, the outer diameter of the outer circumference of the top cover is greater than or equal to the outer diameter of the burner cap main body.

[0012] Optionally, the top cover has a central portion and an outer ring portion disposed around the outer periphery of the central portion;

[0013] The distance from the end face of the central portion facing away from the main body of the burner cap to the end of the main body of the burner cap where the opening is provided is a first distance, and the distance from the end face of the outer ring portion facing away from the main body of the burner cap to the end of the main body of the burner cap where the opening is provided is a second distance, and the first distance is greater than the second distance.

[0014] Optionally, a liquid accumulation groove is provided between the central portion and the outer ring portion, and the liquid accumulation groove is provided on the side of the top cover facing away from the main body of the burner cap.

[0015] Optionally, the central portion is provided with a central flame hole.

[0016] Optionally, the inner ring burner cap forms a first chamber and a second chamber, the top cover is provided with a central flame hole communicating with the first chamber, a flame stabilizing hole communicating with the first chamber is formed between the top cover, the main body of the burner cap and two adjacent burner teeth, and the main body of the burner cap is provided with a first side flame hole communicating with the first chamber and a second side flame hole communicating with the second chamber.

[0017] Optionally, the main body of the burner cap includes:

[0018] An outer ring wall on which the first side flame hole, the second side flame hole and the stepped surface are formed;

[0019] An inner ring wall disposed inside the outer ring wall; and

[0020] A connecting plate, one end of which is connected to the outer ring wall and the other end of which is connected to the inner ring wall, and the first chamber is formed by enclosing the connecting plate, the outer ring wall and the top cover, and the second chamber is formed by enclosing the connecting plate, the outer ring wall and the inner ring wall.

[0021] Optionally, the main body of the burner cap further includes:

[0022] A flow guiding wall, one end of which is connected to the end of the connecting plate away from the outer ring wall, and the other end of which is connected to the end of the inner ring wall close to the top cover;

[0023] A first flow guiding surface for guiding the air flow inside the inner ring wall to the first side flame hole is provided at one end of the flow guiding wall facing the first chamber, and / or a second flow guiding surface for guiding the air flow in the second chamber to the direction of the second side flame hole is provided at one end of the flow guiding wall facing the second chamber.

[0024] Optionally, the inner ring burner cap is formed with a first chamber and a second chamber. The top cover is provided with a central flame hole communicating with the first chamber. A flame stabilizing hole communicating with the first chamber is formed between the top cover, the burner cap body and two adjacent burner teeth. The burner cap body is provided with a middle ring flame hole communicating with the second chamber.

[0025] Optionally, the burner cap body includes:

[0026] An outer ring wall on which the middle ring flame hole and the step surface are formed;

[0027] An inner ring wall disposed inside the outer ring wall; and

[0028] An annular partition plate, the outer periphery of which is connected to the outer ring wall, and one end of the annular partition plate away from the outer ring wall is connected to one side of the inner ring wall close to the top cover. The first chamber is formed by enclosing the annular partition plate, the outer ring wall and the top cover, and the second chamber is formed by enclosing the annular partition plate, the outer ring wall and the inner ring wall.

[0029] Optionally, the annular partition plate is connected to one end of the outer ring wall close to the step surface;

[0030] One end of the annular partition plate facing the first chamber is provided with a third flow guiding surface for guiding the air flow inside the inner ring wall to the flame stabilizing hole, and / or one end of the annular partition plate facing the second chamber is provided with a fourth flow guiding surface for guiding the air flow in the second chamber to the direction of the middle ring flame hole.

[0031] Based on the above inner ring burner cap, the present invention provides a burner, which includes a gas distributing disc and the inner ring burner cap as described above, and the inner ring burner cap is installed on the gas distributing disc.

[0032] Based on the above burner, the present invention provides a gas cooker, which includes the burner as described above.

[0033] The technical solution of the present invention adopts the step surface provided on the burner cap body, so that the burner teeth cooperate with the step surface, and a flame stabilizing hole is formed between two adjacent burner teeth, the step surface and the top cover to realize the output of the flame stabilizing air flow; when grease flows along the edge of the top cover to the flame stabilizing hole, it can flow to the step surface through the gap between the top cover and the burner cap body, and the grease flows relatively along the step surface between the adjacent burner teeth, so that the flow path of the grease is staggered from the position of the flame stabilizing hole, and the grease will not adhere to the flame stabilizing hole, avoiding the blockage of the flame stabilizing hole, so as to keep the flame stabilizing hole in a good flame stabilizing state. Description of the Drawings

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0035] Figure 1 Structural schematic diagram of an embodiment of the inner ring burner cap of the present invention;

[0036] Figure 2 For Figure 1 Structural schematic diagram of an embodiment of the internal structure of the inner ring burner cap;

[0037] Figure 3 Structural schematic diagram of an embodiment of the air outlet side of the top cover of the present invention;

[0038] Figure 4 Structural schematic diagram of an embodiment of the air inlet side of the top cover of the present invention;

[0039] Figure 5 Structural schematic diagram of an embodiment of the internal structure of the top cover of the present invention;

[0040] Figure 6 Structural schematic diagram of another embodiment of the internal structure of the inner ring burner cap of the present invention;

[0041] Figure 7 Structural schematic diagram of an embodiment of the burner cap main body of the present invention;

[0042] Figure 8 Structural schematic diagram of an embodiment of the internal structure of the burner cap main body of the present invention;

[0043] Figure 9 Structural schematic diagram of an embodiment of the gas distribution plate of the present invention;

[0044] Figure 10 For Figure 9 Top view of;

[0045] Figure 11 For Figure 10 Cross-sectional view taken along line A-A in;

[0046] Explanation of the reference numerals in the drawings:

[0047]

[0048]

[0049] The realization, functional characteristics, and advantages of the objectives of the present invention will be further described in conjunction with the embodiments and with reference to the drawings. Detailed implementation manners

[0050] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0051] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0053] Please refer to Figure 1 and Figure 2 , the present invention provides an inner ring burner cap, comprising: a burner cap body, one end of the burner cap body is formed with an opening, and a stepped surface 22 is recessed on the inner wall of the end of the burner cap body provided with the opening; a top cover 40, covering the opening and facing the stepped surface 22, a flame stabilizing groove 51 is formed by the gap between the top cover 40 and the end surface of the burner cap body close to the top cover 40; and burner teeth 44, arranged between the top cover 40 and the stepped surface 22, the number of the burner teeth 44 is multiple, and the multiple burner teeth 44 are arranged at intervals along the circumferential direction of the stepped surface 22, and a flame stabilizing hole 50 is formed between adjacent burner teeth 44, and the flame stabilizing hole 50 communicates with the flame stabilizing groove 51.

[0054] A chamber for accommodating gas is provided inside the burner cap body 20, and the opening is provided at one end of the burner cap body 20 and communicates with the chamber. After the top cover 40 is installed on the opening of the burner cap body 20, a stable flame hole 50 for jetting a stable flame airflow is formed between the top cover 40, the burner cap body 20, and two adjacent burner teeth 44. Since a stepped surface 22 is provided at one end of the burner cap body 20 close to the top cover 40, the inner diameter of the end of the burner cap body 20 close to the top cover 40 is greater than the overall inner diameter of the burner cap body 20.

[0055] A gap is formed between the top cover 40 and the burner cap body 20, which means that the distance from the stepped surface 22 to the top cover 40 is greater than the distance from the stepped surface 22 to the end face of the burner cap body 20 on the side close to the top cover 40, so that there is a gap between the top cover 40 and the end face of the burner cap body 20 close to the top cover 40. The burner teeth 44 are located between the top cover 40 and the stepped surface 22, and the length of the burner teeth 44 is equal to the distance between the stepped surface 22 and the top cover 40. A stable flame groove 51 is formed by the gap between the outer peripheral surface of the circumference formed by the enclosure of the burner teeth 44, the top cover 40, and the burner cap body 20, and the stable flame hole 50 communicates with the stable flame groove 51.

[0056] The top cover 40 has an air inlet side and an air outlet side. The air inlet side of the top cover 40 faces the burner cap body 20, and the air outlet side of the top cover 40 faces away from the burner cap body 20. A stable flame groove 51 is formed between the part of the air inlet side of the burner close to the outer periphery and the burner cap body 20.

[0057] The inner ring burner cap is for a burner. When the burner is operating and a cookware is placed above the burner, during the cooking process of the cookware, the liquid overflowing from the cookware will flow upward along the outer wall of the cookware to above the inner ring burner cap. When the liquid flows along the top cover 40 towards the burner cap body 20, most of the liquid will directly drip downward along the top cover 40 to below the burner cap body 20.

[0058] The inner wall of the end of the burner cap body 20 where the opening is provided will form a surface for guiding the liquid towards the stepped surface 22. Part of the liquid falls onto the stable flame groove 51 along the top cover 40, and under the action of gravity, the liquid flows along the inner wall of the burner cap body 20 towards the stepped surface 22. When the liquid flows along the inner wall of the burner cap body 20 towards the stepped surface 22, since a gap is formed between the top cover 40 and the burner cap body 20 and the stable flame hole 50 is close to the position of the top cover 40, the liquid will flow along the inner wall of the burner cap body 20 towards the stepped surface 22 and will not adhere between the adjacent burner teeth 44, thereby avoiding the liquid blocking the stable flame hole 50.

[0059] Please refer to Figure 4 , the fire teeth 44 are generally in a cuboid structure. Since the adjacent fire teeth 44 are arranged at intervals, the air flow flows from the axis of the fire cap body 20 towards the outer periphery thereof, and an air flow channel with a rectangular air outlet cross-section is formed between the opposite end faces of two adjacent fire teeth 44. By forming a rectangular air outlet cross-section, when the liquid contacts the adjacent fire teeth 44, it is not easy to adhere between the adjacent fire teeth 44 due to surface tension, and thus blockage can be further prevented.

[0060] Please refer to Figure 5 , the cross-section formed by one end of two adjacent fire teeth 44 facing the outside of the fire cap body 20 is quadrilateral, and the liquid droplets will flow along the straight track formed by the edge of the fire teeth 44 towards the step surface 22. Since the fire teeth 44 are in a cuboid structure, the liquid droplets are not easy to adhere to the edge of the fire teeth 44, so that the liquid droplets cannot accumulate outside the fire teeth 44, and thus blockage of the flame stabilizing holes 50 can be avoided. When the liquid droplets flow along the outer surface of the fire teeth 44 towards the step surface 22, the air flow jets outwards from the inside of the fire cap body 20 along the flame stabilizing holes 50, and the air flow will generate resistance to the liquid droplets near the edge of the fire teeth 44, making it not easy for the liquid droplets to adhere to the edge part of the fire teeth 44. The liquid droplets continue to flow downwards under the action of gravity and continuously flow towards the step surface 22, and thus will not block the air outlet end of the flame stabilizing holes 50.

[0061] The fire teeth 44 can be arranged on the step surface 22, and one end of the fire teeth 44 away from the step surface 22 can be connected and fixed to the top cover 40. One end of the fire teeth 44 away from the step surface 22 can also be arranged in a fitting manner with the top cover 40, so that the top cover 40 is in a detachable structure, which is convenient for the user to clean. At this time, grooves corresponding to the fire teeth 44 can be arranged on the top cover 40, so that when the top cover 40 is placed on the fire teeth 44, the top cover 40 cannot move radially.

[0062] Please refer to Figure 4 , the fire teeth 44 can also be arranged on the top cover 40, and one end of the fire teeth 44 away from the top cover 40 can be arranged in a fitting manner with the step surface 22. Since the step surface 22 is recessed on the inner wall of one end of the fire cap body 20 provided with the top cover 40, the fire cap body 20 can be used to limit the radial movement of the fire teeth 44 along the fire cap body 20. When the user cleans the inner ring fire cap, the top cover 40 can be removed from the fire cap body 20, which is convenient for cleaning.

[0063] Please refer to Figure 2, optionally in this embodiment, the outer diameter of the circumference formed by the fire teeth 44 is smaller than the inner diameter of the end of the fire cap body 20 provided with the opening. There is a gap between the end face of the fire teeth 44 on the side away from the axis of the fire cap body 20 and the inner wall of the side of the fire cap body 20 provided with the opening. When the liquid flows along the end face of the fire teeth 44 on the side away from the axis of the fire cap body 20, the gap between the fire cap body 20 and the fire teeth 44 can provide a flow space for the liquid. When the air flow jets from the flame stabilizing holes 50 to the outside of the fire cap body 20, it generates resistance to the liquid droplets, causing the liquid droplets to flow towards the end face of the fire teeth 44 on the side away from the axis of the fire cap body 20. When the liquid droplets gradually flow towards the step surface 22 along the surface of the fire teeth 44, they can have a certain movement space. Since the liquid can flow along the gap between the fire teeth 44 and the inner wall of the fire cap body 20, a flow channel with less air resistance is provided for the liquid, so that the liquid droplets do not flow towards the flame stabilizing holes 50, thereby avoiding blocking the flame stabilizing holes 50.

[0064] Optionally in this embodiment, the outer peripheral diameter of the top cover 40 is greater than or equal to the outer diameter of the fire cap body 20. The outer periphery of the top cover 40 can form a resistance to block the liquid droplets from flowing towards the side wall of the fire cap body 20, so that most of the liquid droplets drip from the outer peripheral edge of the top cover 40 under the action of gravity, to reduce the total amount of liquid droplets flowing towards the flame stabilizing groove 51.

[0065] The outer diameter of the fire cap body 20 is adapted to the outer peripheral diameter of the top cover 40. When the fire cap body 20 is provided with side fire holes, the top cover 40 can block the liquid droplets from flowing towards the side fire holes, thereby preventing the side fire holes from being blocked.

[0066] During the cooking process, when the pot has soup overflowing, it will flow along the outer wall of the pot towards the center position of the top cover 40. In order to prevent the soup from splashing, optionally in this embodiment, the top cover 40 has a central part 41 and an outer ring part 42 provided around the outer periphery of the central part 41; the distance from the end face of the central part 41 facing away from the fire cap body 20 to the end of the fire cap body 20 provided with the opening is a first distance, and the distance from the end face of the outer ring part 42 facing away from the fire cap body 20 to the end of the fire cap body 20 provided with the opening is a second distance, and the first distance is greater than the second distance. The side of the top cover 40 facing away from the fire cap body 20 forms a structure with a high middle and a low edge. When the liquid flows along the end face of the top cover 40 facing away from the fire cap body 20, the soup will flow from the central part 41 towards the outer periphery, so that the soup can gradually and slowly flow towards the outer periphery of the top cover 40, to prevent the problem of soup splashing.

[0067] When a central flame hole 45 is provided on the top cover 40, the top cover 40 can gradually divert the liquid near the central flame hole 45 to the outer periphery of the top cover 40 to prevent the central flame hole 45 from being blocked.

[0068] To buffer the flow rate of the liquid dripping onto the top cover 40, a liquid accumulation groove 43 is provided between the central portion 41 and the outer ring portion 42, and the liquid accumulation groove 43 is provided on the side of the top cover 40 facing away from the burner main body 20. When the liquid drips onto the top cover 40, the liquid will flow along the central portion 41 towards the liquid accumulation groove 43. By providing the liquid accumulation groove 43, the liquid can be gradually decelerated above the top cover 40. Since the top cover 40 will be in a high-temperature state during the operation of the burner, after deceleration, some impurities in the soup will adhere to the position of the liquid accumulation groove 43, and the remaining soup will flow along the outer ring portion 42 towards the burner main body 20. By buffering the liquid through the liquid accumulation groove 43, the total amount of liquid flowing to the flame stabilizing groove 51 can be reduced, thereby reducing the blockage of the flame stabilizing holes 50.

[0069] When the liquid accumulation groove 43 is provided, the central flame hole 45 on the top cover 40 is distributed close to the geometric center of the top cover 40 so that more of the liquid dripping onto the central portion 41 can gradually flow towards the liquid accumulation groove 43 to prevent the central flame hole 45 from being blocked.

[0070] Please refer to Figure 2 , in an embodiment of the present invention, it is disclosed that the inner ring burner cover forms a first chamber 30 and a second chamber 31. A central flame hole 45 communicating with the first chamber 30 is provided on the top cover 40. Flame stabilizing holes 50 communicating with the first chamber 30 are formed between the top cover 40, the burner main body 20, and two adjacent burner teeth 44. A first side flame hole 23 communicating with the first chamber 30 and a second side flame hole 24 communicating with the second chamber 31 are provided on the burner main body 20. The first chamber 30 and the second chamber 31 are two independent gas chambers with different gas flow sources.

[0071] By connecting the central flame hole 45 and the flame stabilizing hole 50 to the first chamber 30, the flame stabilizing hole 50 can be used to reduce the gas load of the central flame hole 45, improve the stability of the flame formed by the injection of the central flame hole 45, and avoid flame lift-off and flashback. The first side flame hole 23 can be used to share the gas load of the first chamber 30, so that the gas load of the central flame hole 45 is less than the total gas load input to the first chamber 30, and thus the flame formed by the injection of the central flame hole 45 can have higher stability. When the burner corresponding to the inner ring burner cap is in a small fire or even an extremely small fire combustion state, since the gas load of the central flame hole 45 is relatively reduced, the flame formed by the central flame hole 45 can be relatively smaller, and stable combustion in the extremely small fire state can be achieved.

[0072] Since the flame stabilizing groove 51 is provided between the burner cap body 20 and the top cover 40, the flame stabilizing groove 51 forms a channel for outputting the flame stabilizing air flow to the side of the burner cap body 20. When there is air flow output from the flame stabilizing groove 51, the air flow interacts with the air flow of the first side flame hole 23, and the effect of stabilizing the flame formed by the injection of the first side flame hole 23 can be achieved.

[0073] The second chamber 31 is used to supply gas to the second side flame hole 24. Since the second side flame hole 24 and the first side flame hole 23 have different air flow sources respectively, when adjusting the flame sizes in the first side flame hole 23 and the central flame hole 45, the second side flame hole 24 is not affected. Furthermore, by using the method that the air flows injected by the first side flame hole 23 and the second side flame hole 24 have different air flow velocities, the flames formed by the injection of the first side flame hole 23 and the second side flame hole 24 can have the effect of stabilizing each other.

[0074] When adjusting the gas load of the first chamber 30, the gas load of the first side flame hole 23 is adjusted synchronously. At this time, the gas load of the second chamber 31 can be adjusted adaptively, and thus the flames formed by the first side flame hole 23 and the second side flame hole 24 can be adapted to each other, and the flame formed by the inner ring burner cap can have higher stability.

[0075] When manufacturing the burner cap body 20, the axes of the first side flame hole 23 and the second side flame hole 24 can be made to form a certain angle, so that the air flow directions formed by the injection of the first side flame hole 23 and the second side flame hole 24 are not parallel, and the air flows formed by the injection of the first side flame hole 23 and the corresponding second side flame hole 24 interfere with each other. Furthermore, the air flows can interact with each other, and the air flows can mix with air more, which helps to improve the combustion efficiency of the gas.

[0076] Please refer to Figure 2, in this embodiment, an alternative structural form of the burner cap body 20 is disclosed. The burner cap body 20 includes: an outer ring wall 21, on which the first side fire holes 23, the second side fire holes 24 and the step surface 22 are formed; an inner ring wall 25 disposed inside the outer ring wall 21; and a connecting plate 26, one end of which is connected to the outer ring wall 21 and the other end of which is connected to the inner ring wall 25. The connecting plate 26, the outer ring wall 21 and the top cover 40 enclose to form the first chamber 30, and the connecting plate 26, the outer ring wall 21 and the inner ring wall 25 enclose to form the second chamber 31. The connecting plate 26 is disposed between the inner ring wall 25 and the outer ring wall 21, and the inner ring wall 25 is a hollow structure so that air flow can enter the first chamber 30 through the inner ring wall 25.

[0077] The first side fire holes 23 and the second side fire holes 24 may be a plurality of through holes arranged at intervals in the circumferential direction of the outer ring wall 21. The ends of the first side fire holes 23 and the second side fire holes 24 close to the outside of the burner cap body 20 are outlet ends. When arranging the first side fire holes 23 and the second side fire holes 24, the first side fire holes 23 and the second side fire holes 24 can be arranged in a staggered manner. In a cross-section perpendicular to the axis of the burner cap body 20, the outlet end of each second side fire hole 24 is located between the outlet ends of two adjacent first side fire holes 23, so that the air flows formed by the first side fire holes 23 and the second side fire holes 24 are staggered, and the air flows sprayed by the first side fire holes 23 and the second side fire holes 24 interfere with each other to achieve a flame stabilizing effect.

[0078] Please refer to Figure 2 , in an embodiment of the present invention, the burner cap body 20 further includes: a guide wall, one end of the guide wall is connected to the end of the connecting plate 26 away from the outer ring wall 21, and the other end of the guide wall is connected to the end of the inner ring wall 25 close to the top cover 40; a first guide surface 271 for guiding the air flow inside the inner ring wall 25 to the first side fire holes 23 is provided at one end of the guide wall facing the first chamber 30, and the guide wall has an effect of guiding the air flow.

[0079] When the air flow inside the inner ring wall 25 flows towards the top cover 40, since the direction of the air flow path formed by the inner ring wall 25 is relatively determined, most of the air flow will flow towards the top cover 40 along the air flow path formed by the inner ring wall 25. As a result, when the air flow on the side of the top cover 40 facing the first chamber 30 contacts the top cover 40, eddy currents are likely to be generated. By providing the diversion wall, when the air flow flows along the inner ring wall 25 towards the diversion wall, the first diversion surface 271 guides part of the air flow towards the first side fire hole 23, reducing the total amount of air flow directly flowing towards the top cover 40, preventing eddy currents from appearing on the side of the top cover 40 facing the first chamber 30, and thus helping to reduce the wind resistance of the central fire hole 45 on the top cover 40 and facilitating the continuous and stable output of gas. By avoiding the formation of eddy currents in the air flow on the side of the burner cap facing the first chamber 30, the flame formed by the injection of the central fire hole 45 is relatively uniform and stable. When the first diversion surface 271 guides part of the air flow to the first side fire hole 23, it can also make the first side fire hole 23 share the gas load of the central fire hole 45.

[0080] In another embodiment of the present invention, the end of the diversion wall facing the second chamber 31 is provided with a second diversion surface 272 for guiding the air flow in the second chamber 31 towards the second side fire hole 24. The second diversion surface 272 can form a diversion at a position in the second chamber 31 close to the second side fire hole 24, so that the air flow does not make a sharp turn at the position of the second side fire hole 24. Thus, the air flow in the second chamber 31 can be guided towards the second side fire hole 24, and eddy currents can be prevented from being generated at the second side fire hole 24, helping to reduce the generation of eddy currents in the air flow, and further reducing the wind resistance of the air flow, so that the air flow can be output uniformly and stably.

[0081] Please refer to Figure 6 、 Figure 7 and Figure 8 In an embodiment of the present invention, another structural form of the inner ring burner cap is disclosed. The inner ring burner cap forms a first chamber 30 and a second chamber 31. The top cover 40 is provided with a central fire hole 45 communicating with the first chamber 30. Stable flame holes 50 communicating with the first chamber 30 are formed between the top cover 40, the burner cap body 20, and two adjacent fire teeth 44. The burner cap body 20 is provided with a middle ring fire hole 29 communicating with the second chamber 31. The first chamber 30 and the second chamber 31 are two independent chambers. The central fire hole 45 is used for injecting and burning to form a central flame, and the middle ring fire hole 29 is used for injecting and forming a middle ring flame.

[0082] The central flame holes 45 may be a plurality of through holes spaced apart on the top cover 40, and the middle ring flame holes 29 are a plurality of through holes spaced apart along the outer periphery of the burner cap body 20.

[0083] The flame stabilizing holes 50 can be used to reduce the gas load in the first chamber 30, so that the flame formed by the injection of the central flame holes 45 is more stable. Since the middle ring flame holes 29 and the central flame holes 45 have different gas sources, when adjusting the gas load delivered to the first chamber 30, it has no influence on the gas load of the middle ring flame holes 29, and thus the size of the central flame formed by the central flame holes 45 can be adjusted as needed. When manufacturing the inner ring burner cap, the central flame holes 45 can be made smaller, so that the formed central flame is smaller. When the burner corresponding to the inner ring burner cap is in the extremely low fire combustion state, a smaller and stable combustion flame can be formed.

[0084] Optionally, in this embodiment, the burner cap body 20 includes: an outer ring wall 21, on which the middle ring flame holes 29 and the stepped surface 22 are formed; an inner ring wall 25 disposed inside the outer ring wall 21; and an annular partition 28, the outer periphery of the annular partition 28 is connected to the outer ring wall 21, and one end of the annular partition 28 away from the outer ring wall 21 is connected to one side of the inner ring wall 25 close to the top cover 40. The annular partition 28, the outer ring wall 21 and the top cover 40 enclose to form the first chamber 30, and the annular partition 28, the outer ring wall 21 and the inner ring wall 25 enclose to form the second chamber 31.

[0085] The annular partition 28 is disposed outside the inner ring wall 25 and connected to the outer ring wall 21, so that the inside of the burner cap body 20 is divided into a first chamber 30 close to the top cover 40 and a second chamber 31 away from the top cover 40. The middle of the inner ring wall 25 is hollow to form a channel for delivering air flow to the first chamber 30. The middle ring flame holes 29 are spaced apart along the outer periphery of the outer ring wall 21.

[0086] Optionally, in this embodiment, the annular partition 28 is connected to one end of the outer ring wall 21 close to the stepped surface 22; one end of the annular partition 28 facing the first chamber 30 is provided with a third flow guiding surface 281 for guiding the air flow inside the inner ring wall 25 to the flame stabilizing holes 50. Taking a cross-section along the direction parallel to the axis of the burner cap body 20, the annular partition 28 is inclined.

[0087] The third flow guiding surface 281 is used to guide the air flow inside the inner ring wall 25 to the flame stabilizing holes 50, so as to prevent the air flow from flowing entirely towards the central flame holes 45 along the air flow path formed by the inner ring wall 25, and to prevent the formation of eddy currents on the side of the burner cap facing the first chamber 30. Furthermore, the air resistance at one end of the central flame hole 45 close to the first chamber 30 can be reduced, enabling the air flow to be quickly output. By reducing the generation of eddy currents by the air flow at the burner cap, the central flame holes 45 can output gas evenly, and thus the stability of the flame formed by the injection of the central flame holes 45 can be achieved.

[0088] When the air flow flows towards the flame stabilizing holes 50 along the third flow guiding surface 281, the flame stabilizing holes 50 can have the effect of dividing the pressure of the first chamber 30, so as to reduce the gas load of the central flame holes 45, making the flame formed by the central flame holes 45 more stable.

[0089] In another embodiment of the present invention, the end of the annular partition 28 facing the second chamber 31 is provided with a fourth flow guiding surface 282 for guiding the air flow in the second chamber 31 towards the middle ring flame holes 29. The fourth flow guiding surface 282 can form a plane in the second chamber 31 for guiding the air flow towards the middle ring flame holes 29, thereby preventing the formation of eddy currents at the positions of the annular partition 28 and the middle ring flame holes 29, helping to reduce the air resistance of the middle ring flame holes 29, enabling the middle ring flame holes 29 to have a stable air flow output, and further enhancing the stability of the middle ring flame.

[0090] Based on the above inner ring burner cap, the present invention proposes an embodiment of a burner.

[0091] Please refer to Figure 9 、 Figure 10 and Figure 11 , the burner includes a gas distribution plate 10 and the inner ring burner cap as described in any of the above embodiments, and the inner ring burner cap is installed on the gas distribution plate 10.

[0092] The gas distribution plate 10 has a first air inlet 12 communicating with the first chamber 30 and a second air inlet 13 communicating with the second chamber 31, and the first air inlet 12 and the second air inlet 13 are two independent air inlet ports.

[0093] The gas distribution plate 10 further has an outer ring burner cap 11, and the outer ring burner cap 11 has outer ring flame holes communicating with the second air inlet 13.

[0094] The airflow delivered from the first air inlet 12 to the first chamber 30 can be delivered to the central flame hole 45. When it is necessary to adjust the flame size of the central flame hole 45, it is not necessary to affect the middle ring flame holes 29 and the outer ring flame holes. Thus, the size of the central flame can be adjusted in the state of the burner burning with extremely low fire. At the same time, the central flame hole 45 of the burner can be made smaller, and thus a more stable state of burning with extremely low fire can be achieved.

[0095] The second air inlet 13 supplies gas to both the outer ring flame holes and the middle ring flame holes 29. When the burner is in the normal combustion state, a wider range of adjustment of the burner can be achieved by adjusting the air pressure of the second air inlet 13.

[0096] Based on the above burner, the present invention provides an embodiment of a gas cooker.

[0097] The gas cooker includes the above-mentioned burner.

[0098] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An inner ring burner cap, characterized in that, it includes: A burner cap body, one end of the burner cap body is formed with an opening, and a stepped surface is recessed on the inner wall of the end of the burner cap body where the opening is provided; A top cover, which is covered on the opening and is arranged towards the stepped surface, and a stable flame groove is formed by the gap between the top cover and the end surface of the burner cap body close to the top cover; And Burner teeth, which are arranged between the top cover and the stepped surface, the number of the burner teeth is multiple, and the multiple burner teeth are arranged at intervals along the circumferential direction of the stepped surface, and a stable flame hole is formed between adjacent burner teeth, and the stable flame hole is communicated with the stable flame groove; The inner ring burner cap forms a first chamber and a second chamber, a central flame hole communicating with the first chamber is provided on the top cover, stable flame holes communicating with the first chamber are formed between the top cover, the burner cap body and adjacent two burner teeth, and a first side flame hole communicating with the first chamber and a second side flame hole communicating with the second chamber are provided on the burner cap body; The burner cap body includes: An outer ring wall, on which the first side flame hole, the second side flame hole and the stepped surface are formed; An inner ring wall, which is arranged inside the outer ring wall; and A connecting plate, one end of which is connected to the outer ring wall, and the other end is connected to the inner ring wall, and the connecting plate, the outer ring wall and the top cover enclose to form the first chamber, and the connecting plate, the outer ring wall and the inner ring wall enclose to form the second chamber; An air flow channel with a rectangular air outlet cross section is formed between the facing end faces of two adjacent burner teeth.

2. An inner ring burner cap, characterized in that, it includes: A burner cap body, one end of the burner cap body is formed with an opening, and a stepped surface is recessed on the inner wall of the end of the burner cap body where the opening is provided; A top cover, which is covered on the opening and is arranged towards the stepped surface, and a stable flame groove is formed by the gap between the top cover and the end surface of the burner cap body close to the top cover; And Burner teeth, which are arranged between the top cover and the stepped surface, the number of the burner teeth is multiple, and the multiple burner teeth are arranged at intervals along the circumferential direction of the stepped surface, and a stable flame hole is formed between adjacent burner teeth, and the stable flame hole is communicated with the stable flame groove; The inner ring burner cap forms a first chamber and a second chamber, a central flame hole communicating with the first chamber is provided on the top cover, stable flame holes communicating with the first chamber are formed between the top cover, the burner cap body and adjacent two burner teeth, and a middle ring flame hole communicating with the second chamber is provided on the burner cap body; The burner cap body includes: An outer ring wall, on which the middle ring flame hole and the stepped surface are formed; An inner ring wall, which is arranged inside the outer ring wall; and An annular partition board, the outer periphery of the annular partition board is connected to the outer ring wall, and one end of the annular partition board far from the outer ring wall is connected to one side of the inner ring wall close to the top cover, and the annular partition board, the outer ring wall and the top cover enclose to form the first chamber, and the annular partition board, the outer ring wall and the inner ring wall enclose to form the second chamber; An air flow channel with a rectangular air outlet cross section is formed between the facing end faces of two adjacent burner teeth.

3. The inner ring burner cap according to claim 1 or 2, characterized in that, one end of the burner teeth is connected to the top cover, and the other end is arranged in contact with the step surface.

4. The inner ring burner cap according to claim 1 or 2, characterized in that, the outer diameter of the circumference formed by the burner teeth is smaller than the inner diameter of the end of the burner cap body provided with the opening.

5. The inner ring burner cap according to claim 1 or 2, characterized in that, the outer diameter of the outer circumference of the top cover is greater than or equal to the outer diameter of the burner cap body.

6. The inner ring burner cap according to claim 1 or 2, characterized in that, the top cover has a central portion and an outer ring portion disposed around the outer circumference of the central portion; the distance from the end face of the central portion facing away from the burner cap body to the end of the burner cap body provided with the opening is a first distance, and the distance from the end face of the outer ring portion facing away from the burner cap body to the end of the burner cap body provided with the opening is a second distance, and the first distance is greater than the second distance.

7. The inner ring burner cap according to claim 6, characterized in that, a liquid accumulation groove is provided between the central portion and the outer ring portion, and the liquid accumulation groove is arranged on the side of the top cover facing away from the burner cap body.

8. The inner ring burner cap according to claim 6, characterized in that, the central portion is provided with a central flame hole.

9. The inner ring burner cap according to claim 1, characterized in that, the burner cap body further includes: a diversion wall, one end of the diversion wall is connected to the end of the connecting plate away from the outer ring wall, and the other end of the diversion wall is connected to the end of the inner ring wall close to the top cover; a first diversion surface for guiding the air flow inside the inner ring wall to the first side flame hole is provided at one end of the diversion wall facing the first chamber, and / or, a second diversion surface for guiding the air flow in the second chamber to the direction of the second side flame hole is provided at one end of the diversion wall facing the second chamber.

10. The inner ring burner cap according to claim 2, characterized in that, the annular partition is connected to the end of the outer ring wall close to the step surface; a third diversion surface for guiding the air flow inside the inner ring wall to the flame stabilizing hole is provided at one end of the annular partition facing the first chamber, and / or, a fourth diversion surface for guiding the air flow in the second chamber to the direction of the middle ring flame hole is provided at one end of the annular partition facing the second chamber.

11. A burner, characterized in that, the burner includes a gas distribution plate and the inner ring burner cap according to any one of claims 1 to 10, and the inner ring burner cap is installed on the gas distribution plate.

12. A gas cooker, characterized in that, the gas cooker includes the burner according to claim 11.

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