A high efficiency jet burner

Abstract

The present invention relates to a high-efficiency ejector burner, comprising an annular outer ring fire cover, which comprises a seat body and a cover body, the seat body is provided with an annular cavity with a top opening along its length direction, the cover body is provided on the opening of the annular cavity to enclose an outer ring gas mixing cavity, and the cover body is provided with an outer ring fire hole connected with the outer ring gas mixing cavity, and the bottom of the seat body is connected with two outer ring ejector tubes, each outer ring ejector tube is communicated with the outer ring gas mixing cavity respectively, and each outer ring ejector tube is arranged horizontally, the two outer ring ejector tubes are arranged opposite to each other, and the air inlets of the two are staggered. The present invention can improve the ejection efficiency of the outer ring fire cover, the two outer ring ejector tubes are arranged horizontally, so that the air outlet of each outer ring ejector tube can be directly extended into the outer ring gas mixing cavity, reduce the energy loss of the mixed gas in the outer ring ejector tube during the transmission process, ensure the efficient ejection of the outer ring ejector tube, and the air inlets of the two outer ring ejector tubes are staggered, so as to avoid mutual interference between the two, and further improve the ejection efficiency.

Description

Technical Field

[0001] The invention relates to the field of gas stoves, and in particular to a high-efficiency jet burner. Background Art

[0002] Traditional upper air intake gas burners generally have the problem of low ejection efficiency due to the limitation of their own structure. For example, the Chinese invention patent with application number 201711370764.X (publication number CN108036320A) discloses a top-mounted burner, which includes a fire cover, a middle plate and a base from top to bottom. The middle plate and the base are installed and matched to form a small fire ejection tube and a main fire ejection tube. A small fire outlet tube and a main fire outlet tube are also provided in the middle plate. The outlet end of the small fire ejection tube is connected to the small fire outlet tube, and the outlet end of the main fire ejection tube is connected to the main fire outlet tube. The other ends of the small fire ejection tube and the main fire ejection tube, i.e., the air inlet end, are respectively connected to the gas interface. The middle plate and the fire cover are installed and matched to form a combustion chamber, and the top surface of the fire cover is provided with a number of evenly distributed strip-shaped fire outlet holes. In this patent, due to the structural limitation of the combustion chamber, the length of the main fire ejection tube is relatively short, so that its ejection distance is short, which affects its ejection force. In addition, some upward air-intake burners on the market supplement the air required for combustion by opening holes in the panel, and soup or cooking debris can easily enter the housing of the stove through the panel, making it inconvenient to clean. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a high-efficiency injection burner with high injection efficiency in view of the prior art.

[0004] The second technical problem to be solved by the present invention is to provide a high-efficiency induced burner with high combustion efficiency in view of the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a high-efficiency ejector burner, comprising an annular outer ring fire cover, characterized in that the outer ring fire cover comprises an annular seat body and a cover body, the seat body is provided with an annular cavity with a top opening along its length direction, the cover body is arranged on the opening of the annular cavity to form an outer ring mixing cavity, and the cover body is provided with an outer ring fire hole connected with the above-mentioned outer ring mixing cavity, two outer ring ejector tubes are connected to the bottom of the seat body, each outer ring ejector tube is communicated with the above-mentioned outer ring mixing cavity, and each outer ring ejector tube is arranged horizontally, the two outer ring ejector tubes are arranged opposite to each other, and the air inlets of the two are staggered with each other.

[0006] In order to further improve the ejection efficiency, the cross-sectional size of the outer ring mixing chamber changes alternately along the circumferential direction in an increasing and decreasing manner, and the air outlets of each outer ring ejector tube are respectively located at the maximum point of the cross-sectional area of ​​the outer ring mixing chamber, and the decreasing direction of the cross-sectional area of ​​the two outer ring mixing chambers is clockwise or counterclockwise. In this way, the two airflows flowing out of the two outer ring ejector tubes can flow in the same direction (clockwise or counterclockwise) and mix with each other as the internal shape of the outer ring mixing chamber changes, thereby increasing the ejection effect. In addition, the alternating change of the outer ring mixing chamber can reduce the volume of the outer ring mixing chamber to a certain extent, thereby preventing the explosion phenomenon caused by the excessive volume of the outer ring mixing chamber during the combustion process.

[0007] The alternating change of the cross section of the outer ring gas mixing cavity can be realized in various forms. For the convenience of processing and manufacturing, preferably, the bottom surface of the ring cavity is formed with protrusions and depressions that are alternately spaced along the circumferential direction.

[0008] In order to further enhance the ejection effect, each of the depressions is inclined from outside to inside and its width decreases in a clockwise or counterclockwise direction, the height of the protrusions adjacent to each depression increases in the same direction as the depression, and its width also increases synchronously, and a pair of adjacent depressions and protrusions are combined to form a circular arc section of the bottom surface of the annular cavity. Thus, the two airflows flowing out of the two outer ring ejection pipes can rotate and flow in the outer ring mixing cavity in the same direction, so that the two airflows can better promote each other and further enhance the ejection effect.

[0009] Furthermore, the end surface of the highest point of the protrusion is a vertical surface, thereby reducing the resistance at the air outlet of the outer ring ejector tube, which is beneficial for the airflow to enter the outer ring mixing cavity and flow along the outer ring mixing cavity.

[0010] Preferably, the burner in the present invention also includes an inner ring fire cover, the outer ring fire cover is arranged around the outer circumference of the inner ring fire cover, a gap is left between the outer ring fire cover and the inner ring fire cover along the circumferential direction, two outer ring ejector tubes are respectively arranged on both sides of the inner ring fire cover, the inner ring fire cover includes a cylindrical base and an end cover arranged on the base, the end cover and the base form an inner ring gas mixing chamber, and the end cover is provided with an inner ring fire hole communicated with the above-mentioned inner ring gas mixing chamber.

[0011] Furthermore, the burner in the present invention also includes a vertically arranged inner ring ejector pipe, which is arranged below the above-mentioned base and is an integral part with the base, and the air outlet end of the inner ring ejector pipe passes through the base and communicates with the above-mentioned inner ring mixing chamber.

[0012] Furthermore, the burner in the present invention also includes a nozzle seat located below the inner ring ejector tube, an inner ring nozzle is vertically arranged in the middle of the top surface of the nozzle seat, the inner ring nozzle is directly opposite to the air inlet of the inner ring ejector tube, and an outer ring nozzle is horizontally arranged on both sides of the inner ring nozzle, each outer ring nozzle corresponds to each outer ring ejector tube one by one, and each outer ring nozzle is directly opposite to the air inlet of the corresponding outer ring ejector tube.

[0013] Preferably, the nozzle seat is disc-shaped, and an annular liquid receiving tray is installed on its outer periphery. The outer peripheral edge of the liquid receiving tray is located below or outside the outer ring fire cover.

[0014] Furthermore, preferably, an annular cover is provided around the outer periphery of the seat, the cover surface of the cover is inclined outward from top to bottom along the circumferential direction, and the projection of the outer peripheral edge of the cover on the plane where the liquid receiving tray is located is located on the inner side of the outer peripheral edge of the liquid receiving tray. The above-mentioned cover has the following three functions: (1) It is conducive to the secondary air to be replenished to the outer ring fire hole along the cover surface, thereby promoting the combustion of the outer ring fire; (2) It can guide the overflow dripping to the outer ring fire cover to flow along the cover surface to the liquid receiving tray; (3) It is conducive to guiding air into the burner, promoting the supply of primary and secondary air to the burner.

[0015] As a preference, the cover body is provided with an inner flame zone and an outer flame zone, both of which are provided with the outer ring fire holes, wherein the inner flame zone is located at the inner side end of the cover body and is distributed in a ring shape along the circumference, and the outer flame zone is located outside the inner flame zone and is distributed at intervals along the circumference. The inner flame zone can ensure the smooth transmission of the outer ring fire, and the outer flame zone can ensure the supply of secondary air to the outer ring fire through the interval arrangement, thereby ensuring the full combustion of the outer ring fire.

[0016] Furthermore, preferably, anti-burning zones are formed between at least four pairs of adjacent outer flame zones, and each anti-burning zone is evenly distributed along the circumference and is respectively used to be opposite to each leg of the pot support, thereby preventing the flame from directly burning the legs of the pot support, and two of the anti-burning zones are respectively opposite to the air outlets of the above-mentioned two outer ring mixing chambers, thereby preventing the temperature at the air outlets of the two outer ring ejector tubes from being high, and further preventing the fire hole from being de-fired due to a high air outlet velocity at the air outlet.

[0017] Compared with the prior art, the advantages of the present invention are: two outer ring ejector tubes are provided in the burner of the present invention, thereby improving the ejection efficiency of the outer ring fire cover, and the two outer ring ejector tubes are both arranged horizontally, so that the air outlet of each outer ring ejector tube can directly extend into the outer ring mixing chamber, reducing the energy loss of the mixed gas in the outer ring ejector tube during the transmission process, ensuring the efficient ejection of the outer ring ejector tube, and the air inlets of the two outer ring ejector tubes are staggered with each other, thereby avoiding mutual interference between the two and further improving the ejection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a gas stove in an embodiment of the present invention;

[0019] Figure 2 It is a partial structural exploded view of a gas stove in an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure in another direction;

[0021] Figure 4 Another partial structural exploded view of the gas stove in the embodiment of the present invention;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure in another direction;

[0023] Figure 6 Schematic diagram of a partial structure of a gas stove in an embodiment of the present invention (the cover is not shown);

[0024] Figure 7 for Figure 6 Cross-sectional view along AA direction;

[0025] Figure 8 for Figure 6 Cross-sectional view along direction BB;

[0026] Fig. 9 It is a top view of the burner in the embodiment of the present invention (the cover is not shown);

[0027] Fig.10 Schematic diagram of the structure of the burner in the embodiment of the present invention (the cover is not shown);

[0028] Fig.11 for Fig.10 A schematic diagram of the structure in another direction;

[0029] Fig.12 It is a structural exploded view of the burner in an embodiment of the present invention (the cover is not shown);

[0030] Fig.13 This is a schematic diagram of the structure of an integrated component in an embodiment of the present invention;

[0031] Fig.14 for Fig.13 Schematic diagram of the structure in another direction. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the accompanying drawings.

[0033] like Figures 1 to 14As shown, a gas stove comprises a bottom shell 11 and a panel 12. The panel 12 is provided with two mounting holes 120. A high-efficiency jet burner is installed in each mounting hole 120.

[0034] The high-efficiency ejector burner comprises an annular outer ring fire cover 2, an inner ring fire cover 3, an inner ring ejector pipe 7, an outer ring ejector pipe 4 and a nozzle seat 5. The outer ring fire cover 2 comprises an annular seat body 22 and a cover body 21. The seat body 22 is provided with an annular cavity 220 with a top opening along its length direction. The cover body 21 is covered on the opening of the annular cavity 220 to enclose an outer ring gas mixing cavity 20, and the cover body 21 is provided with an outer ring fire hole 210 communicating with the outer ring gas mixing cavity 20. The inner ring fire cover 3 is arranged at the center of the outer ring fire cover 2, and a gap is left between the two along the circumferential direction. The inner ring fire cover 3 comprises a cylindrical base 31 and an end cover 32 covered on the base 31. The end cover 32 and the base 31 enclose an inner ring gas mixing cavity 30. The end cover 32 is provided with an inner ring fire hole 320 communicating with the inner ring gas mixing cavity 30.

[0035] The bottom of the seat body 22 is connected with two outer ring ejector tubes 4, each outer ring ejector tube 4 is communicated with the outer ring gas mixing chamber 20, and each outer ring ejector tube 4 is arranged horizontally, and the two outer ring ejector tubes 4 are arranged opposite to each other and parallel to each other, and the air inlets 41 of the two are staggered. The burner of this embodiment is provided with two outer ring ejector tubes 4, so that the ejection efficiency of the outer ring fire cover 2 can be improved, and the two outer ring ejector tubes 4 are arranged horizontally, so that the air outlet 42 of each outer ring ejector tube 4 can be directly extended into the outer ring gas mixing chamber 20, reducing the energy loss of the mixed gas in the outer ring ejector tube 4 during the transmission process, ensuring the efficient ejection of the outer ring ejector tube 4, and the air inlets 41 of the two outer ring ejector tubes 4 are staggered, so as to avoid mutual interference between the two, and further improve the ejection efficiency.

[0036] The inner ring ejector tube 7 is vertically arranged below the base 31, and the inner ring ejector tube 7 and the base 31 are an integral part, and the gas outlet end of the inner ring ejector tube 7 passes through the base 31 and communicates with the inner ring mixing chamber 30, so that the mixed gas in the inner ring ejector tube 7 can directly pass into the inner ring mixing chamber 30, avoiding energy loss of the gas in the inner ring ejector tube 7 during the transmission process.

[0037] The cross-sectional size of the outer ring mixing chamber 20 changes alternately along the circumferential direction, and the air outlets 42 of each outer ring ejector tube 4 are respectively located at the maximum point of the cross-sectional area of ​​the outer ring mixing chamber 20, and the decreasing direction of the cross-sectional area of ​​the outer ring mixing chamber 20 of both outer ring mixing chambers 20 is clockwise or counterclockwise. In this way, the two airflows flowing out of the two outer ring ejector tubes 4 can flow in the same direction (clockwise or counterclockwise) and mix with each other as the internal shape of the outer ring mixing chamber 20 changes, thereby increasing the ejection effect. The alternating change of the cross-sectional area of ​​the outer ring mixing chamber 20 can be achieved in a variety of forms. For the convenience of processing and manufacturing, preferably, the bottom surface of the annular cavity 220 is formed with protrusions 221 and depressions 222 that are alternately spaced along the circumferential direction. Furthermore, each of the above-mentioned depressions 222 is inclined from outside to inside and its width decreases in a clockwise or counterclockwise direction. The height of the protrusion 221 adjacent to each depression 222 increases in the same direction as the depression 222, and its width also increases synchronously. A pair of adjacent depressions 222 and protrusions 221 are assembled into a circular arc section of the bottom surface of the annular cavity 220, so that the two airflows flowing out of the two outer ring ejector tubes 4 can rotate and flow in the same direction in the outer ring mixing cavity 20, so that the two airflows can better promote each other and further enhance the ejection effect. In addition, the alternating change of the outer ring mixing cavity 20 can reduce the volume of the outer ring mixing cavity 20 to a certain extent, thereby preventing the explosion phenomenon caused by the excessive volume of the outer ring mixing cavity 20 during the combustion process.

[0038] Furthermore, the end face at the highest point of the above-mentioned protrusion 221 is a vertical surface 223, that is, the side where the air outlet 42 of each outer ring injector tube 4 enters the outer ring mixing chamber 20 is a vertical surface 223, thereby reducing the resistance at the air outlet 42 of the outer ring injector tube 4, which is conducive to the airflow entering the outer ring mixing chamber 20 and flowing along the outer ring mixing chamber 20.

[0039] The above-mentioned two outer ring ejector tubes 4 are respectively arranged on both sides of the inner ring fire cover 3, and an annular cover plate 8 is fixed on the outer periphery of the base 31. The inner ring fire hole 320 is located above the cover plate 8, and the two outer ring ejector tubes 4 are respectively fixed to the bottom of the cover plate 8, and the top surface of the cover plate 8 is a smooth surface. The primary and secondary air of the burner can be diverted through the cover plate 8. Specifically, the air enters the burner from the gap between the outer ring fire cover 2 and the table surface of the panel 12, and is located at the bottom of the cover plate 8 through two outer ring ejection tubes 4. Therefore, the air can be diverted through the cover plate 8, wherein a part of the air enters the lower part of the cover plate 8 in the form of primary air, and enters each outer ring ejection tube 4 through the air inlet 41 of each outer ring ejection tube 4, and the other part of the air enters the gap between the inner and outer ring fire covers 3, 2 in the form of secondary air, and the secondary air is diverted through the cover plate 8, a part of the air is supplemented to the inner ring fire hole 320 along the top surface of the cover plate 8, and the other part of the air is supplemented to the outer ring fire hole 210 along the inner ring surface of the outer ring fire cover 2. In this way, by diverting the primary and secondary air, the problem of air competition inside the burner is avoided, thereby ensuring efficient injection.

[0040] Furthermore, most of the outer ring ejector tubes 4 are located at the bottom of the cover plate 8, and the two sides of the cover plate 8 respectively wrap the outer ring ejector tubes 4 downward along the outer surface of the corresponding outer ring ejector tubes 4, and the side edges of the side cover plates 8 are folded horizontally to form flanges 81. Such a design can not only make the internal structure of the burner more compact, but also better prevent overflow from entering the inner ring fire cover 3, and the design of the flanges 81 can make the cover plate 8 better divert the primary and secondary air.

[0041] The burner in the present invention also includes a nozzle seat 5, which is located below the inner ring ejector tube 7 and has a circular shape. An inner ring nozzle 51 is vertically arranged at the center of the top surface of the nozzle seat 5, and the air inlet 71 end of the inner ring ejector tube 7 is suspended and arranged directly above the inner ring nozzle 51. The top surface of the nozzle seat 5 is provided with vertically extending mounting columns 520 on both sides of the inner ring nozzle 51, and each mounting column 520 is horizontally arranged with an outer ring nozzle 52, each outer ring nozzle 51 corresponds to each outer ring ejector tube 4 one by one, and each outer ring nozzle 51 is opposite to the air inlet 41 of the corresponding outer ring ejector tube 4, and both outer ring nozzles 51 are located below the cover plate 8. The outer ring nozzle 51 is arranged below the cover plate 8 to avoid the outer ring nozzle 51 from being too hot, and the large drop in the burner load caused by the outer ring nozzle 51 being too hot is a common problem of upper air inlet burners, and the present invention solves this problem through the above design.

[0042] Furthermore, the air inlet 41 of the outer ring ejector tube 4 is connected to the end edge of the inner side end of the cover plate 8 and extends along the outer peripheral surface of the air inlet end of the inner ring ejector tube 7 to form a rib 43, and the lower end edge of each rib 43 is located below the air inlet 71 of the inner ring ejector tube 7, so that the primary air diverted by the cover plate 8 can be diverted again through each rib 43, so that part of the air enters the outer ring ejector tube 4 through the air inlet 41 of the outer ring ejector tube 4, and the other part of the air enters the inner ring ejector tube 7 through the air inlet 71 of the inner ring ejector tube 7, so as to avoid the inner and outer ring ejector tubes 7, 4 competing for the primary air and affecting the ejection efficiency.

[0043] The projection of the outer ring fire cover 2 on the plane where the top surface of the nozzle seat 5 is located is located on the periphery of the top surface of the nozzle seat 5, that is, the burner in the present invention is large at the top and small at the bottom, so that air can be promoted to enter the burner through the bottom of the outer ring fire cover 2, which is beneficial to the supply of air inside the burner. In this embodiment, the size of the nozzle seat 5 matches the above-mentioned cover plate 8, and an annular liquid receiving tray 13 is installed on its outer periphery. The outer peripheral edge of the liquid receiving tray 13 is located below or outside the outer ring fire cover 2. Specifically, three mounting ears 132 are provided at intervals along the circumferential direction on the inner edge of the above-mentioned liquid receiving tray 13, and each mounting ear 132 is provided with a first mounting hole 131. The outer peripheral edge of the above-mentioned nozzle seat 5 is provided with a second mounting hole 53 corresponding to the above-mentioned first mounting hole 131 at intervals along the circumferential direction. When installed, each mounting ear 132 is separated and stacked at the corresponding position of the top surface of the nozzle seat 5, so that each first mounting hole 131 is connected with the corresponding second mounting hole 53 from top to bottom, and finally fixed by a fastener (not shown).

[0044] Furthermore, in this embodiment, an annular cover body 9 is provided around the outer periphery of the seat body 22, and the cover surface of the cover body 9 is inclined outward from top to bottom along the circumferential direction, and the projection of the outer periphery of the cover body 9 on the plane where the liquid receiving pan 13 is located is located on the inner side of the outer periphery of the liquid receiving pan 13. In this embodiment, the cover body 9 has the following three functions: (1) It is conducive to the replenishment of secondary air to the outer ring fire hole along the cover surface, thereby promoting the combustion of the outer ring fire; (2) It can guide the overflow dripping onto the outer ring fire cover 2 to flow along the cover surface to the liquid receiving pan 13; (3) It is conducive to guiding air into the burner, promoting the replenishment of primary and secondary air of the burner. For the convenience of assembly, in this embodiment, the cover body 9 and the seat body 22 are an integrated structure.

[0045] In addition, an ignition needle 15 and a thermocouple 16 are respectively installed on the nozzle seat 5 , and the upper ends of the ignition needle 15 and the thermocouple 16 respectively pass through the first through hole 82 and the second through hole 83 on the cover plate 8 so that the two are respectively located on both sides of the inner ring fire cover 3 .

[0046] In this embodiment, the seat body 22, the base 31, the outer ring ejector tubes 4 and the inner ring ejector tube 7 are an integrated part, and the integrated part is connected to the nozzle seat 5 in a detachable manner. This is not only convenient for disassembly and assembly of the burner, but also convenient for cleaning the burner, especially when the burner is installed on the panel 12, the integrated part is disassembled, and only the top part of the nozzle seat 5 is exposed on the liquid receiving pan 13, which is very convenient for cleaning. Specifically, a support column 6 extending vertically downward is provided at the bottom of the integrated part, and a connecting hole 55 for inserting the support column 6 is provided on the top surface of the nozzle seat 5. By inserting the support column 6 into the corresponding connecting hole 55, the detachable connection between the integrated part and the nozzle seat 5 can be achieved.

[0047] The cover body 21 is provided with an inner flame zone 211 and an outer flame zone 212, and the outer flame zone 211 and the outer flame zone 212 are both provided with the outer ring fire holes 210, wherein the inner flame zone 211 is located at the inner side end of the cover body 21 and is distributed in a ring shape along the circumference, and the outer flame zone 212 is located outside the inner flame zone 211 and is distributed at intervals along the circumference. The inner flame zone 211 can ensure the smooth transmission of the outer ring fire, and the outer flame zone 212 can ensure the supply of secondary air for the outer ring fire through the interval arrangement, so as to ensure the full combustion of the outer ring fire. Furthermore, there are burn-proof zones 213 formed between the four pairs of adjacent outer flame zones 212, and each burn-proof zone 213 is evenly distributed along the circumference and is respectively used to face the legs of the pot support 14, so as to prevent the flame from directly burning the legs of the pot support 14, and two of the burn-proof zones 213 are respectively opposite to the gas outlets 42 of the two outer ring mixing chambers 20, so as to prevent the temperature at the gas outlets 42 of the two outer ring ejector tubes 4 from being high, and further prevent the fire hole from being de-fired due to the high gas outlet velocity at the gas outlets 42. In addition, in the present invention, the cover surface of the cover body 21 is inclined from top to bottom and outward along the circumference, and its inner and outer peripheral edges extend vertically downward and are respectively placed on the inner ring peripheral edges of the above-mentioned annular cavity 220, so that the overflow on the cover body 21 can be guided to flow along the cover surface to the cover surface of the cover body 9, and then collected to the liquid receiving pan 13 through the cover surface, so as to prevent the overflow from being retained on the cover surface and blocking the outer ring fire hole 210.

Claims

1. A high-efficiency jet burner, comprising an annular outer ring fire cover (2), characterized in that: The outer ring fire cover (2) comprises an annular base body (22) and a cover body (21); the base body (22) is provided with an annular cavity (220) with a top opening along its length direction; the cover body (21) is arranged on the opening of the annular cavity (220) to form an outer ring gas mixing cavity (20); and the cover body (21) is provided with an outer ring fire hole (210) which is in communication with the outer ring gas mixing cavity (20). The bottom of the seat body (22) is connected to two outer ring ejector tubes (4), each outer ring ejector tube (4) is communicated with the outer ring gas mixing chamber (20), and each outer ring ejector tube (4) is arranged horizontally, the two outer ring ejector tubes (4) are arranged facing each other, and the air inlets (41) of the two outer ring ejector tubes are staggered with each other; The cross-sectional size of the outer ring gas mixing chamber (20) changes alternately in increasing and decreasing manner along the circumferential direction, the gas outlets (42) of the outer ring ejector tubes (4) are respectively located at the maximum point of the cross-sectional size of the outer ring gas mixing chamber (20), and the decreasing direction of the cross-sectional size of the outer ring gas mixing chambers (20) of both outer ring gas mixing chambers (20) is clockwise or counterclockwise; It also includes an inner ring fire cover (3), the outer ring fire cover (2) is arranged around the outer periphery of the inner ring fire cover (3), and the inner ring fire cover (3) is arranged at the center of the outer ring fire cover (2), a gap is left between the outer ring fire cover (2) and the inner ring fire cover (3) along the circumferential direction, and two outer ring ejector pipes (4) are respectively arranged on both sides of the inner ring fire cover (3). The inner ring fire cover (3) comprises a cylindrical base (31) and an end cover (32) covered on the base (31); the end cover (32) and the base (31) enclose an inner ring gas mixing chamber (30); and the end cover (32) is provided with an inner ring fire hole (320) communicating with the inner ring gas mixing chamber (30).

2. The high efficiency jet burner according to claim 1, characterized in that: Protrusions (221) and recesses (222) are formed on the bottom surface of the annular cavity (220) at alternating intervals along the circumferential direction.

3. The high efficiency jet burner according to claim 2, characterized in that: Each of the recesses (222) is inclined from outside to inside and its width decreases in a clockwise or counterclockwise direction. The height of the protrusion (221) adjacent to each recess (222) increases in the same direction as the recess (222), and its width also increases synchronously. A pair of adjacent recesses (222) and protrusions (221) are assembled into a circular arc section of the bottom surface of the annular cavity (220).

4. The high efficiency jet burner according to claim 3, characterized in that: The end surface at the highest point of the protrusion (221) is a vertical surface (223).

5. The high efficiency jet burner according to claim 1, characterized in that: It also includes a vertically arranged inner ring ejector pipe (7), which is arranged below the base (31) and is an integral structure with the base (31), and an air outlet (72) end of the inner ring ejector pipe (7) passes through the base (31) and communicates with the inner ring gas mixing chamber (30).

6. The high efficiency jet burner according to claim 5, characterized in that: It also includes a nozzle seat (5) located below the inner ring ejector tube (7), an inner ring nozzle (51) is vertically arranged in the middle of the top surface of the nozzle seat (5), the inner ring nozzle (51) is directly opposite to the air inlet (71) of the inner ring ejector tube (7), and an outer ring nozzle (52) is horizontally arranged on both sides of the inner ring nozzle (51), each outer ring nozzle (52) corresponds to each outer ring ejector tube (4) one by one, and each outer ring nozzle (52) is directly opposite to the air inlet (41) of the corresponding outer ring ejector tube (4).

7. The high efficiency jet burner according to claim 6, characterized in that: The nozzle seat (5) is disc-shaped in appearance, and an annular liquid receiving tray (13) is installed on its outer periphery. The outer peripheral edge of the liquid receiving tray (13) is located below or outside the outer ring fire cover (2).

8. The high efficiency jet burner according to claim 7, characterized in that: An annular cover body (9) is provided on the outer periphery of the seat body (22), the cover surface of the cover body (9) being inclined outwardly from top to bottom along the circumferential direction, and the projection of the outer periphery of the cover body (9) on the plane where the liquid receiving tray (13) is located is located on the inner side of the outer periphery of the liquid receiving tray (13).

9. The high-efficiency jet burner according to any one of claims 1 to 4, characterized in that: The cover body (21) is provided with an inner flame zone (211) and an outer flame zone (212), and the inner flame zone (211) and the outer flame zone (212) are evenly distributed with the outer ring fire holes (210), wherein the inner flame zone (211) is located at the inner side end of the cover body (21) and is distributed in a ring shape along the circumferential direction, and the outer flame zone (212) is located outside the inner flame zone (211) and is distributed at intervals along the circumferential direction.

10. The high efficiency jet burner according to claim 9, characterized in that: At least four pairs of adjacent outer flame zones (212) are provided with anti-burning zones (213), each anti-burning zone (213) is evenly distributed along the circumference and is respectively used to face each leg of the pot support (14), and two of the anti-burning zones (213) are respectively facing the gas outlets (42) of the two outer ring gas mixing chambers (20).

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