A burner for a gas stove

Abstract

The present invention relates to a burner for a gas stove, comprising a base and an inner ring fire cover arranged on the base, the inner ring fire cover comprising a top wall and an annular wall extending downward from the circumference of the top wall, and a central air mixing chamber is formed between the inner ring fire cover and the base, and the annular wall is provided with fire outlet holes connected to the central air mixing chamber at intervals along the circumferential direction; the characteristic is that: the central air mixing chamber is provided with a guide channel for guiding overflow, the liquid inlet of the guide channel is arranged on the top wall, the liquid outlet of the guide channel is arranged on the annular wall, and the annular wall is located below the fire outlet hole at the liquid outlet. Compared with the prior art, the advantage of the present invention is that a space capable of accommodating overflow is independently formed in the inner ring fire cover, and a guide channel capable of guiding overflow to the annular wall is arranged, so that the overflow can be discharged from the central air mixing chamber faster without affecting the fire outlet holes of the annular wall, and the present invention is particularly suitable for use with a pointed pot, and has a simple structure, so that the fire cover has a dual-purpose function.

Description

Technical Field

[0001] The invention relates to the field of household kitchenware, and in particular to a burner for a gas stove. Background Art

[0002] Common household burners generally have an outer fire cover and an inner fire cover, together with ignition needles, thermocouples (or ion sensing needles with equivalent functions) and other components to achieve functions such as generating flames and maintaining flames. The ignition needles and thermocouples are mainly arranged around the inner fire cover. When the overflow liquid blocks the fire hole near the ignition needle, the gas stove cannot ignite. When the blocked fire hole is near the thermocouple (or ion sensing needle with equivalent functions), the gas stove cannot maintain the flame, which affects the service life. Secondly, after cleaning the inner ring, users often put it back in the wrong place. The conventional design of the inner ring fire cover has an ignition cap brim. Because users cannot distinguish between the ignition needle and the thermocouple, they often place the inner ring with the ignition cap brim facing the thermocouple. Finally, the current fire cover structure design at the ignition and fire protection is relatively simple. Basically, an ignition hole or a fire protection hole is designed specifically. The clogging of the fire hole or the flame separation of the fire hole will affect the low success rate of ignition and fire protection. Therefore, it is necessary to further improve the structure of the inner fire cover.

[0003] In addition, in order to achieve uniform heating of the pot bottom, the existing stove burners on the market often make corresponding changes in the distribution of fire holes on the inner and outer rings. For example, a Chinese utility model "upper air inlet stove head" with patent number ZL201820258341.2 (authorization announcement number CN208186341U) includes a stove head, an outer ring fire cover and a central fire cover. The outer ring fire cover has fire holes on the inner and outer sides relative to the inner ring fire cover, wherein the fire holes on the inner and outer sides of the outer ring fire cover are aligned one by one. Once the overflow liquid overflows during the cooking process, the fire holes on both sides of the inner and outer sides can be blocked at the same time. Therefore, the arrangement of the inner and outer fire holes of the outer ring fire cover needs to be better designed; for this purpose, a patent The Chinese invention patent application with patent application number CN200410052538.3 (publication number CN1786569A) "A burner fire cover" includes a fire cover body, an air cavity is provided on the bottom surface of the fire cover body, wherein an inclined surface is provided on the outer circumference of the fire cover body, and a plurality of fire holes are provided on the inclined surface along the outer circumference. The fire holes are inclined and communicate with the air cavity, and the distribution of the positions of the fire holes is wave-shaped along the vertical direction. The wave-shaped distribution of the fire holes makes the fire more uniform when the burner burns, and forms multiple levels, which are distributed in a circular pattern, and the thermal efficiency is higher. The fire holes of the fire cover change in the radial direction, but the fire holes are only provided in one circle, and the fire power is still not large. Or a Chinese utility model "Petal Fire Cover for Gas Burner" with patent number ZL201420079377.6 (authorization announcement number CN203744259U), the flame corresponding to the protruding petal part of the fire cover can concentrate on heating the pot, while the flame corresponding to the concave part is smaller in height and lower in position, corresponding to the support of the stove rack, to prevent the support of the stove rack from being heated at high temperature for a long time. However, this kind of fire cover has a change in axial height, and only has fire holes around the outer periphery of the fire cover, which still cannot achieve high firepower, and still does not solve the problem of overflow easily clogging the fire holes, and also needs to make further improvements to the outer ring fire cover. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a burner for a gas stove which can reduce the probability of overflow blocking the inner ring fire cover.

[0005] The second technical problem to be solved by the present invention is to provide a burner for a gas stove which can effectively prevent overflow from entering the ignition hole and improve the ignition efficiency in view of the above-mentioned existing technical status.

[0006] The third technical problem to be solved by the present invention is to provide a burner for a gas stove that can effectively prevent overflow from entering the fire protection hole and improve the fire protection efficiency in view of the above-mentioned existing technical status.

[0007] The fourth technical problem to be solved by the present invention is to provide a burner for a gas stove with an inner ring fire cover and good foolproof effect in view of the above-mentioned prior art status.

[0008] The fifth technical problem to be solved by the present invention is to provide a burner for a gas stove which can improve the uniformity of the outer ring fire cover heating the pot bottom and reduce the probability of overflow blocking the fire outlet.

[0009] The technical solution adopted by the present invention to solve the above technical problems is: the burner for the gas stove comprises

[0010] Pedestal;

[0011] An inner ring fire cover is arranged on the base, the inner ring fire cover comprises a top wall and an annular wall extending downward from the periphery of the top wall, and a central air mixing chamber is formed between the inner ring fire cover and the base, and the annular wall is provided with fire outlet holes communicating with the central air mixing chamber at intervals along the circumferential direction;

[0012] The invention is characterized in that: the central gas mixing chamber is provided with a guide channel for guiding overflow liquid, the liquid inlet of the guide channel is opened on the top wall, and the liquid outlet of the guide channel is located below the fire outlet.

[0013] In order to effectively prevent the overflow and other liquids from being burned and causing the bottom of the annular cavity between the inner ring fire cover and the outer ring fire cover to become black, the liquid outlet of the diversion channel is arranged on the annular wall, and the annular wall is also provided with an annular liquid storage groove connected to the liquid outlet below the liquid outlet.

[0014] Furthermore, the base is provided with an ignition needle at a position adjacent to the annular wall of the inner ring ignition cover, and the annular wall is provided with at least one ignition hole on the wall surface corresponding to the ignition needle, and the annular wall is provided with an auxiliary ignition hole intersecting with the ignition hole at a position adjacent to the ignition hole. The auxiliary ignition hole has a dual protection function, on the one hand, it has the function of improving the success rate of the ignition hole, and even if the overflow enters the ignition hole, it is not easy to fail to ignite, and on the other hand, it has the function of a flame stabilizing ignition hole.

[0015] Preferably, there are two auxiliary ignition holes, which are symmetrically arranged on both sides of the ignition hole. Even if there is shaking when the inner ring fire cover and the base are assembled, the two auxiliary ignition holes can ensure that the user can successfully ignite when the inner ring fire cover is not placed in the center.

[0016] Furthermore, the base is provided with a thermocouple arranged opposite to the ignition needle, the thermocouple and the ignition needle are located at both ends of the inner ring fire cover in the diameter direction, the annular wall is provided with at least one fire-keeping hole corresponding to the wall surface of the thermocouple, and the annular wall adjacent to the fire-keeping hole has an auxiliary fire-keeping hole intersecting with the fire-keeping hole. The auxiliary fire-keeping hole has a dual protection function, on the one hand, it has the function of improving the success rate of the fire-keeping hole, and can ensure the heating area of ​​the thermocouple in contact with the flame, so that the thermocouple is not only sufficiently heated to generate sufficient thermoelectric potential, but also has the function of stabilizing the flame and keeping the fire.

[0017] Preferably, there are two auxiliary fire-keeping holes, which are symmetrically arranged on both sides of the fire-keeping hole. Even if there is shaking when the inner ring fire cover and the base are assembled, the two auxiliary fire-keeping holes can ensure that the user can successfully keep the fire when the inner ring fire cover is not centered.

[0018] In order to achieve a good foolproof effect of the inner ring fire cover, the annular wall of the inner ring fire cover is partially retracted inward along the radial direction of the inner ring fire cover at the first wall where the ignition hole and the auxiliary ignition hole are located, and the annular wall of the inner ring fire cover is also partially retracted inward along the radial direction of the inner ring fire cover at the second wall where the fire protection hole and the auxiliary fire protection hole are located, and the retracted lengths of the two are the same. Since the first wall and the second wall are symmetrically positioned relative to the base, the arrangement of the fire holes at the ignition and fire protection is also consistent, and no matter how they are placed, it will not affect ignition and fire protection.

[0019] In order to further reduce the influence of the overflow on the ignition needle and the thermocouple, the annular wall of the inner ring fire cover partially extends outward along the radial direction of the inner ring fire cover to form a waterproof eaves shielding the ignition needle and the thermocouple.

[0020] The guide channel may have one or more liquid inlets, preferably arranged in the center. The guide channel has one liquid inlet and is arranged in the center of the top wall.

[0021] Preferably, the center of the top wall is lower than the periphery of the top wall, so that when the overflow liquid or other liquid enters the top wall, it flows from the periphery to the center and then enters the liquid inlet located in the center, so that the overflow liquid or other liquid flows into the guide channel more concentratedly.

[0022] In order to increase the speed of overflow liquid flowing out of the inner ring fire cover, the diversion channel includes a vertical main flow channel and at least one horizontal branch flow channel connected to the main flow channel. Preferably, the branch flow channel can also be arranged inclined.

[0023] Preferably, the diversion channel gradually expands outward from the inside to the outside along the radial direction of the inner cover fire body.

[0024] Furthermore, the base has an inner ring gas channel connected to the central gas mixing chamber, and the diverter channel can at least partially block the gas outlet end of the inner ring gas channel. The diverter channel can also slow down the speed at which the mixture of gas and primary air enters the central gas mixing chamber, so that the ignition of the inner ring fire cover is more stable.

[0025] In order to slow down the speed of the mixture of gas and primary air entering the central mixing chamber to a certain extent at the outlet end of the inner ring gas channel, the cross-sectional area of ​​the outlet end of the inner ring gas channel gradually decreases from bottom to top, and the cross-sectional area of ​​the central mixing chamber is larger than the cross-sectional area of ​​the uppermost part of the outlet end.

[0026] Furthermore, the annular liquid storage groove includes an inner peripheral wall and an outer peripheral wall, the outer peripheral wall gradually tilts upward from the outside to the inside along the radial direction, and forms a liquid storage area together with the inner peripheral wall. The outer peripheral wall also has the function of guiding secondary air.

[0027] Furthermore, it also includes an outer ring fire cover, which is also arranged on the base and located on the periphery of the inner ring fire cover. The outer ring fire cover includes an annular top wall and an inner ring wall and an outer ring wall extending vertically or obliquely downward from the inner and outer edges of the annular top wall, and the outer ring wall and the base form an outer ring gas mixing chamber. The annular top wall is separated by a first top wall that gradually tilts upward from the outer circumference to the center, and the position of the inner ring wall corresponding to the first top wall is provided with a first outer fire hole connected to the outer ring gas mixing chamber. Since the first outer fire hole corresponds to the first top wall that gradually tilts upward from the outer circumference to the center, the overflow falls into the first top wall corresponding to the fire outlet hole, and the overflow can be quickly guided away from the position of the first outer fire hole.

[0028] In order to realize the staggered arrangement of the fire outlet holes and the outer fire holes of the outer ring fire cover, and to distribute them more evenly at the bottom of the pot, the annular top wall also includes a second top wall connected to the adjacent first top wall, the second top wall gradually tilts downward from the outer circumference to the center, and the position of the outer ring wall corresponding to the second top wall is provided with a second outer fire hole connected to the outer ring gas mixing chamber. Since the second outer fire hole corresponds to the second top wall, which gradually tilts downward from the outer circumference to the center, the overflow falls into the second top wall corresponding to the outer fire hole, and the overflow can be quickly guided away from the outer fire hole. The position where the overflow is guided out is not provided with the first outer fire hole on the inner ring wall, and the influence of the overflow on the first outer fire hole is avoided. In addition, the staggered arrangement of the first top wall and the second top wall is also conducive to the supply of secondary air from the outside and reduces smoke.

[0029] Compared with the prior art, the advantage of the present invention is that a space capable of accommodating overflowing liquid is independently formed in the inner ring fire cover, and a guide channel capable of guiding the overflowing liquid to the annular wall is provided, thereby accelerating the discharge of the overflowing liquid from the central gas mixing chamber without affecting the ignition of the ignition holes of the annular wall. The present invention is particularly suitable for use with a pointed pot and has a simple structure, so that the fire cover has a dual purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the burner in Example 1 of the present invention;

[0031] Figure 2 This is a schematic structural diagram of an inner ring fire cover at one angle in Example 1 of the present invention;

[0032] Figure 3 This is a schematic structural diagram of the inner ring fire cover in Embodiment 1 of the present invention from another angle;

[0033] Figure 4 for Figure 3 A cross-sectional view of

[0034] Figure 5 for Figure 1 A cross-sectional view at an angle;

[0035] Figure 6 for Figure 1 Schematic diagram of the structure from another angle;

[0036] Figure 7 This is a schematic diagram of the structure of the inner ring fire cover corresponding to the thermocouple in Example 1 of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the ignition pin corresponding to the inner ring fire cover in Example 1 of the present invention;

[0038] Fig. 9 This is a schematic diagram of the structure of a burner in Example 2 of the present invention;

[0039] Fig.10 for Fig. 9 sectional view of . DETAILED DESCRIPTION

[0040] The present invention is further described in detail below with reference to the accompanying drawings.

[0041] Example 1

[0042] like Figures 1 to 8The figure shows the best embodiment of the present invention. The burner for the gas stove of this embodiment includes a base 1; an inner ring fire cover 2 arranged on the base 1, the inner ring fire cover 2 includes a top wall 21 and an annular wall 22 extending downward from the periphery of the top wall 21, and a central air mixing chamber 23 is formed between the inner ring fire cover 2 and the base 1, the central air mixing chamber 23 has a guide channel 3 for guiding overflow, the liquid inlet 32 ​​of the guide channel 3 is opened on the top wall 21, and the liquid outlet 31 of the guide channel 3 is located below the fire outlet 227, and better, the liquid outlet 31 of the guide channel 3 is opened on the annular wall 22, and the annular wall 22 is also provided with an annular liquid storage tank 4 connected with the liquid outlet 31 below the liquid outlet 31, wherein the liquid inlet of the guide channel can be one or more, preferably arranged in the center, and the guide channel 3 has one liquid inlet 32 ​​and is arranged in the center of the top wall 21. Preferably, the center of the top wall 21 is lower than the periphery of the top wall 21, so that when the overflow or other liquid entering the top wall 21 flows through the top wall 21, it flows from the periphery to the center, and then enters the liquid inlet 32 ​​located in the center, so that the overflow or other liquid flows more concentratedly into the guide channel 3. In order to increase the speed of the overflow flowing out of the inner ring fire cover 2, the guide channel 3 includes a vertical main channel 33 and at least one horizontal branch channel 34 connected to the main channel 33. The branch channel 34 gradually expands outward from the inside to the outside along the radial direction of the inner ring fire cover 2. Preferably, the branch channel 34 can also be arranged tilted. A space capable of accommodating overflowing liquid is independently formed in the inner ring fire cover 2, and a guide channel 3 capable of guiding the overflowing liquid to the annular wall 22 is provided, so as to accelerate the discharge of the overflowing liquid from the central mixing chamber 23, and the discharged overflowing liquid flows into the annular liquid storage groove 4 without affecting the ignition of the ignition hole of the annular wall 22. The annular liquid storage groove 4 is particularly suitable for use with a pointed pot, and has a simple structure, so that the fire cover has a dual purpose. The annular liquid storage groove 4 includes an inner circumferential wall 41 and an outer circumferential wall 42. The outer circumferential wall 42 gradually inclines upward from the outside to the inside in the radial direction, and forms a liquid storage area together with the inner circumferential wall 41. The outer circumferential wall 42 also has the function of guiding secondary air.

[0043] Among them, in order to effectively prevent the overflow from entering the ignition hole 221 and improve the ignition efficiency, the base 1 is further provided with an ignition needle 5 at the position of the annular wall 22 adjacent to the inner ring ignition cover 2, and the wall surface of the annular wall 22 corresponding to the ignition needle 5 is provided with at least one ignition hole 221, and the position of the annular wall 22 adjacent to the ignition hole 221 has an auxiliary ignition hole 222 intersecting with the ignition hole 221, and the auxiliary ignition hole 222 has a dual protection function. On the one hand, it has the function of improving the success rate of the ignition hole 221, and even if the overflow enters the ignition hole 221, it is not easy to fail to ignite. On the other hand, it has the function of stabilizing the flame ignition hole 221. Preferably, there are two auxiliary ignition holes 222, which are symmetrically arranged on both sides of the ignition hole 221. Even if there is shaking when the inner ring ignition cover 2 and the base 1 are assembled, the two auxiliary ignition holes 222 can also ensure that the user can successfully ignite when the inner ring ignition cover 2 is not centered. At the same time, the base 1 is also provided with a thermocouple 6 arranged opposite to the ignition needle 5. The thermocouple 6 and the ignition needle 5 are located at both ends of the inner ring fire cover 2 in the diameter direction. The wall surface of the annular wall 22 corresponding to the thermocouple 6 is provided with at least one fire-keeping hole 223. The position of the annular wall 22 adjacent to the fire-keeping hole 223 is provided with an auxiliary fire-keeping hole 224 intersecting with the fire-keeping hole 223. The auxiliary fire-keeping hole 224 has a dual protection function. On the one hand, it has the function of improving the success rate of the fire-keeping hole 223, and can ensure that the heating area of ​​the thermocouple 6 in contact with the flame is sufficient. The thermocouple 6 is not only heated sufficiently to generate sufficient thermoelectric potential, but also has the function of stabilizing the flame of the fire-keeping hole 223. Preferably, there are two auxiliary fire-keeping holes 224, which are symmetrically arranged on both sides of the fire-keeping hole 223. Even if there is shaking when the inner ring fire cover 2 and the base 1 are assembled, the two auxiliary fire-keeping holes 224 can ensure that the user can successfully keep the fire when the inner ring fire cover 2 is not centered.

[0044] In order to achieve a good foolproof effect on the inner ring fire cover 2, the annular wall 22 of the inner ring fire cover 2 partially retracts inward along the radial direction of the inner ring fire cover 2 at the first wall 225 where the ignition hole 221 and the auxiliary ignition hole 222 are located, and the annular wall 22 of the inner ring fire cover 2 partially retracts inward along the radial direction of the inner ring fire cover 2 at the second wall 226 where the fire protection hole 223 and the auxiliary fire protection hole 224 are located, and the retracted lengths of the two are the same. Since the first wall 225 and the second wall 226 are symmetrically positioned relative to the base 1, the arrangement of the fire holes at the ignition and fire protection locations is also consistent, and ignition and fire protection are not affected no matter how they are placed. In order to further reduce the impact of the overflow on the ignition needle 5 and the thermocouple 6, the annular wall 22 of the inner ring fire cover 2 partially extends outward along the radial direction of the inner ring fire cover 2 to form a waterproof eaves that shields the ignition needle 5 and the thermocouple 6. The base 1 has an inner ring gas channel 11 connected to the central gas mixing chamber 23, and the diverter channel 34 can at least partially block the gas outlet 111 of the inner ring gas channel 11. The diverter channel 34 can also slow down the speed of the gas mixture of gas and primary air entering the central gas mixing chamber 23, so that the ignition of the inner ring fire cover 2 is more stable. In order for the gas outlet 111 of the inner ring gas channel 11 to also have a certain effect of slowing down the speed of the gas mixture of gas and primary air entering the central gas mixing chamber 23, the cross-sectional area of ​​the gas outlet 111 of the inner ring gas channel 11 gradually decreases from bottom to top, and the cross-sectional area of ​​the central gas mixing chamber 23 is larger than the cross-sectional area of ​​the uppermost part of the gas outlet 111.

[0045] The specific process is as follows: when the burner is working, a plurality of radial secondary air supply channels for connecting the air supply chamber with the outside are provided at intervals along the circumferential direction on the base 1. The secondary air flowing out of the secondary air supply channel is divided into two independent inner and outer channels by the annular liquid storage tank 4 located in the air supply chamber. One path of secondary air independently replenishes secondary air to the root of the outer fire hole of the outer ring fire cover 7, and the other path of secondary air independently replenishes secondary air to the inner fire hole of the inner ring fire cover 2.

[0046] Example 2

[0047] The structure is basically the same as that of Example 1, the only difference being that: Fig. 9 and 10As shown, the setting of the outer ring fire cover 7 is different. The outer ring fire cover 7 of this embodiment is also arranged on the base 1 and is located on the periphery of the inner ring fire cover 2. The outer ring fire cover 7 includes an annular top wall 70 and an inner ring wall 71 and an outer ring wall 72 extending vertically or obliquely downward from the inner and outer edges of the annular top wall 70 to form an outer ring mixing chamber 73 with the base 1. The annular top wall 21 is separated by a first top wall 211 that gradually tilts upward from the outer circumference to the center. The position of the inner ring wall 71 corresponding to the first top wall 211 is provided with a first outer fire hole 731 connected to the outer ring mixing chamber 73. Since the first outer fire hole 731 corresponds to the first top wall 211 that gradually tilts upward from the outer circumference to the center, the overflowing liquid falls into the first top wall 211 corresponding to the fire outlet hole, and the overflowing liquid can be quickly guided away from the position of the first outer fire hole 731. In order to realize the staggered arrangement of the fire outlet holes and the outer fire holes of the outer ring fire cover 7, so as to be more evenly distributed on the bottom of the pot, the annular top wall 70 also includes a second top wall 212 connected to the adjacent first top wall 211, the second top wall 212 gradually tilts downward from the outer circumference to the center, and the position of the outer ring wall 72 corresponding to the second top wall 212 is provided with a second outer fire hole 732 connected to the outer ring gas mixing chamber 73. Since the second outer fire hole 732 corresponds to the second top wall 212, which gradually tilts downward from the outer circumference to the center, the overflow falls into the second top wall 212 corresponding to the outer fire hole, and the overflow can be quickly guided to a position away from the outer fire hole, while the position where the overflow is led out is not provided with the first outer fire hole 731 on the inner ring wall 71. , and the influence of overflow on the first outer fire hole 731 is avoided. In addition, the staggered arrangement of the first top wall 211 and the second top wall 212 is also beneficial to the supply of external secondary air and reduces smoke. At the same time, the upper side of the first outer fire hole 731 is the first top wall 211 which gradually tilts upward from the periphery to the center. The secondary air introduced from the first top wall 211 is supplied to the end of the fire hole, which is beneficial to the full combustion of the first outer fire hole 731. In addition, since the first top wall 211 corresponding to the first outer fire hole 731 gradually tilts upward from the periphery to the center, the overflow falls into the first top wall 211 corresponding to the first outer fire hole 731, and the overflow can be quickly guided to a position away from the first outer fire hole 731. In addition, a space capable of accommodating overflow liquid is independently formed in the inner ring fire cover 2, and a guide channel 3 capable of guiding the overflow liquid to the annular wall 22 is provided, which can accelerate the discharge of the overflow liquid from the central mixing chamber 23, and the discharged overflow liquid flows into the annular liquid storage tank 4 without affecting the ignition of the fire hole in the annular wall 22.

Claims

1. A burner for a gas stove, comprising Base (1); An inner ring fire cover (2) is arranged on the base (1), the inner ring fire cover (2) comprising a top wall (21) and an annular wall (22) extending downward from the periphery of the top wall (21), and a central air mixing chamber (23) is formed between the inner ring fire cover (2) and the base (1), and the annular wall (22) is provided with fire outlet holes (227) communicating with the central air mixing chamber (23) at intervals along the circumferential direction; Features: The central gas mixing chamber (23) has a guide channel (3) for guiding overflowing liquid, the liquid inlet (32) of the guide channel (3) is arranged on the top wall (21), and the liquid outlet (31) of the guide channel (3) is located below the fire outlet (227); the liquid outlet (31) of the guide channel (3) is arranged on the annular wall (22), and the annular wall (22) is further provided with an annular liquid storage groove (4) connected to the liquid outlet (31) below the liquid outlet (31); The base (1) is provided with an ignition needle (5) at a position adjacent to the annular wall (22) of the inner ring ignition cover (2); the annular wall (22) is provided with at least one ignition hole (221) on the wall surface corresponding to the ignition needle (5); the annular wall (22) is provided with an auxiliary ignition hole (222) interpenetrating with the ignition hole (221) at a position adjacent to the ignition hole (221); the auxiliary ignition holes (222) are provided with two holes symmetrically arranged on both sides of the ignition hole (221); the base (1 ) is provided with a thermocouple (6) arranged opposite to the ignition needle (5), the thermocouple (6) and the ignition needle (5) are located at two ends of the inner ring fire cover (2) in the diameter direction, the annular wall (22) is provided with at least one fire-keeping hole (223) on the wall surface corresponding to the thermocouple (6), and the annular wall (22) is provided with an auxiliary fire-keeping hole (224) intersecting the fire-keeping hole (223) at a position adjacent to the fire-keeping hole (223); the auxiliary fire-keeping holes (224) are provided with two holes, which are symmetrically arranged at the inner ring fire cover (2). On both sides of the fire protection hole (223); the annular wall (22) of the inner ring fire cover (2) is partially retracted inward along the radial direction of the inner ring fire cover (2) at the first wall surface (225) where the ignition hole (221) and the auxiliary ignition hole (222) are located, and the annular wall (22) of the inner ring fire cover (2) is also partially retracted inward along the radial direction of the inner ring fire cover (2) at the second wall surface (226) where the fire protection hole (223) and the auxiliary fire protection hole (224) are located, and the retracted lengths of the two are the same.

2. The burner for a gas stove according to claim 1, characterized in that: The annular wall (22) of the inner ring fire cover (2) partially extends outward along the radial direction of the inner ring fire cover (2) to form a waterproof eaves that shields the ignition needle (5) and the thermocouple (6).

3. The burner for a gas stove according to claim 2, characterized in that: The guide channel (3) has one liquid inlet (32) which is arranged at the center of the top wall (21).

4. The burner for a gas stove according to claim 3, characterized in that: The center of the top wall (21) is lower than the periphery of the top wall (21).

5. The burner for a gas stove according to claim 4, characterized in that: The flow guiding channel (3) comprises a vertical main flow channel (33) and at least one horizontal branch flow channel (34) connected to the main flow channel (33), and the liquid inlet (32) corresponds to the main flow channel (33).

6. The burner for a gas stove according to claim 5, characterized in that: The diversion channel (34) gradually expands outward from the inside to the outside along the radial direction of the inner ring fire cover (2).

7. The burner for a gas stove according to claim 6, characterized in that: The base (1) has an inner ring gas channel (11) connected to the central gas mixing chamber (23), and the branch channel (34) can at least partially block the gas outlet end (111) of the inner ring gas channel (11).

8. The burner for a gas stove according to claim 7, characterized in that: The cross-sectional area of ​​the gas outlet end (111) of the inner ring gas channel (11) gradually decreases from bottom to top, and the cross-sectional area of ​​the central gas mixing chamber (23) is larger than the cross-sectional area of ​​the uppermost portion of the gas outlet end (111).

9. The burner for a gas stove according to any one of claims 4 to 8, characterized in that: The annular liquid storage groove (4) comprises an inner peripheral wall (41) and an outer peripheral wall (42), wherein the outer peripheral wall (42) gradually inclines upward from the outside to the inside in the radial direction, and together with the inner peripheral wall (41) forms a liquid storage area.

10. The burner for a gas stove according to claim 1, characterized in that: The invention also includes an outer ring fire cover (7), which is also arranged on the base (1) and is located on the periphery of the inner ring fire cover (2). The outer ring fire cover (7) includes an annular top wall (70), an inner ring wall (71) and an outer ring wall (72) extending vertically or obliquely downward from the inner and outer edges of the annular top wall (70), and forms an outer ring mixing chamber (73) with the base (1). The annular top wall (70) is provided with a first top wall (211) which is gradually inclined upward from the outer circumference to the center, and a first outer fire hole (731) connected to the outer ring mixing chamber (73) is provided on the inner ring wall (71) at a position corresponding to the first top wall (211).

11. The burner for a gas stove according to claim 10, characterized in that: The annular top wall (70) further includes a second top wall (212) connected to the adjacent first top wall (211), the second top wall (212) gradually tilting downward from the outer periphery to the center, and a second outer fire hole (732) communicating with the outer annular air mixing chamber (73) is provided on the outer annular wall (72) at a position corresponding to the second top wall (212).

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