CN110094728B

CN110094728B - Burner

Info

Publication number: CN110094728B
Application number: CN201810098960.4A
Authority: CN
Inventors: 戎胡斌; 邵海忠; 吴丽波; 郑军妹; 徐强
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-01-31
Filing date: 2018-01-31
Publication date: 2024-04-16
Anticipated expiration: 2038-01-31
Also published as: CN110094728A

Abstract

The utility model relates to a burner, which comprises an outer ring gas mixing chamber, wherein the outer ring gas mixing chamber comprises an inner ring wall surface and an outer ring wall surface which are annular and concentrically arranged at intervals and a bottom wall which is connected with the inner ring wall surface and the outer ring wall surface, the outer ring fire cover is covered above the inner ring wall surface and the outer ring wall surface, and is characterized in that: compared with the prior art, the outer ring of the outer ring air mixing chamber is provided with the pot support legs which are arranged at intervals along the circumferential direction, and the outer ring air mixing chamber has the advantages that the pot support legs are arranged on the outer ring wall of the outer ring air mixing chamber, so that the whole outer ring air mixing chamber is suspended and is not contacted with a kitchen range panel after design, the abrasion of the pot support legs to the kitchen range panel in the cooking process is reduced, the pot support legs are not contacted with the kitchen range panel, and the heat dissipation of the pot support legs to the kitchen range panel can be reduced.

Description

Burner

Technical Field

The utility model relates to the field of gas cookers, and more particularly to a burner.

Background

The gas burner of the existing household gas cooker comprises a gas mixing chamber, a fire cover, an injection pipe and the like, wherein the outer fire cover is placed on the gas mixing chamber, a pot support is arranged on the outer side frame of the outer fire cover, the pot support is directly contacted with a cooker panel in the actual use process of the existing gas cooker, the cooker is arranged on the pot support to heat, on one hand, heat energy generated by gas combustion is directly transferred to the panel through the pot support except for being used for heating a cooker, the temperature of the panel is easily caused to be too high, the loss of the heat energy is also caused, the pot support is directly contacted with the cooker panel, and the bottom of the pot support is easily worn on the panel due to mutual collision in the cooking process, so that the existing pot support is very necessary to be optimized; in addition, the gas mixing chamber of the burner is also an important part of the kitchen range, and the gas mixing chamber is used for mixing gas, so that the gas and the primary air are mixed more uniformly; meanwhile, secondary air is supplied to the inner ring, the integral fixing structure of the current air mixing chamber is not beneficial to cleaning of a kitchen range, especially the inside of the air mixing chamber and the inside of the waist-shaped holes, and more complaints are also generated on the air mixing chamber, such as a combustor disclosed in Chinese patent No. ZL201420072885 (bulletin No. CN 2037314112U) or a gas mixing chamber similar to the one disclosed in patent No. ZL200610052382.8 (bulletin No. CN 1884911A), in addition, secondary air is supplied to the inner ring through air supply from the waist-shaped holes of the air mixing chamber, but the reduction effect on the smoke of the inner ring is limited, and the air supply effect of the air mixing chamber on the inner ring is further improved.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a burner capable of reducing the abrasion of the bottom of a pot support leg to a panel.

The technical scheme adopted for solving the technical problems is as follows: the burner comprises an outer ring gas mixing chamber, wherein the outer ring gas mixing chamber comprises an inner ring wall surface, an outer ring wall surface and a bottom wall, wherein the inner ring wall surface and the outer ring wall surface are annularly arranged at intervals concentrically, the bottom wall is connected with the inner ring wall surface and the outer ring wall surface, and an outer ring fire cover is covered above the inner ring wall surface and the outer ring wall surface, and the burner is characterized in that: at least three pot supporting feet which are arranged at intervals along the circumferential direction are arranged on the outer ring wall surface of the outer ring gas mixing chamber.

The pot support leg comprises a fixing part fixed on the outer ring wall surface of the outer ring gas mixing chamber, and a free end extending upwards and outwards from the tail end of the fixing part. The whole unsettled back of pot stabilizer blade design like this does not contact with the cooking utensils panel, has reduced the wearing and tearing of pot stabilizer blade to the cooking utensils panel in the culinary art in-process, and pot stabilizer blade and cooking utensils panel do not contact, can reduce the heat dissipation of pot stabilizer blade to the cooking utensils panel.

Further, the device also comprises a liquid containing disc and an inner ring air mixing chamber arranged in the outer ring air mixing chamber, wherein the outer ring air mixing chamber and the inner ring air mixing chamber are respectively and independently arranged on the liquid containing disc. The traditional air mixing chamber is of a split structure formed by the outer ring air mixing chamber and the inner ring air mixing chamber, when the outer ring air mixing chamber is taken out during cleaning, only the inner ring air mixing chamber and the basically planar liquid containing disc are left, cleaning is convenient, and meanwhile, the liquid containing disc has the function of guiding liquid to soup in a directional way, so that the phenomenon that the liquid containing disc is blackened due to the fact that soup overflows are burnt out can be effectively prevented, and easy cleaning is realized.

The outer ring air mixing chamber is supported on the liquid containing disc through at least two spaced supporting legs, and a gap between the bottom wall of the outer ring air mixing chamber and the liquid containing disc forms a secondary air inlet channel for supplementing air to the periphery of the inner ring air mixing chamber. The outer ring air mixing chamber is independently supported, the secondary air inlet channel is arranged at the bottom of the outer ring air mixing chamber, the air quantity supplied to the inner ring by the secondary air inlet channel is increased, the full combustion of the inner ring is facilitated, meanwhile, the liquid containing disc and the inner ring air mixing chamber correspondingly sink due to the fact that the outer ring air mixing chamber is supported by supporting legs, compared with the inner ring air mixing chamber in the prior art, the liquid containing disc and the inner ring air mixing chamber are lower, the liquid containing disc and the inner ring air mixing chamber are directly positioned on the same plane with the secondary air inlet channel, the secondary air is ensured to be right opposite to a fire outlet hole of an inner ring fire cover after passing through the secondary air inlet channel, the supply resistance of the secondary air to inner ring flame is reduced, and the secondary air is supplied more rapidly; in addition, the soup has the function of guiding liquid to the liquid containing plate in a directional way, so that the soup is easy to clean, and the phenomenon that the liquid containing plate is blackened due to the fact that spilled liquid is burnt out and dried can be effectively prevented.

In order to realize the split structure of the outer ring air mixing chamber and the inner ring air mixing chamber, a second through hole is formed in the position of the liquid containing disc corresponding to the supporting leg, and the lower end of the supporting leg is supported on the top end of the hole wall of the second through hole.

Further, the bottom wall of the outer ring gas mixing chamber gradually inclines upwards from outside to inside. The design benefits of the outer ring air mixing chamber mainly include the following three aspects: first: the secondary air inlet channel with inclination design can strengthen the suction effect on the outside air and improve the air supply speed; the secondary air is guided in a directional manner by the design of the slope of the secondary air inlet channel with high and low inside and outside, so that the secondary air is ensured to just right face the fire outlet hole of the inner ring fire cover after passing through the air mixing chamber, the supply resistance of the secondary air to the inner ring flame is reduced, and the secondary air is supplied more rapidly; the structural design of the inner high and outer low of the bottom wall of the outer ring air mixing chamber has a heat collection effect, so that the heat dissipation of the inner part of the outer ring air mixing chamber outwards can be reduced, and more heat can be used for heating air; fourth, the gas mixing chamber is split to realize the movable, only the inner ring gas mixing chamber is left after the outer ring gas mixing chamber is dismantled, the inner ring gas mixing chamber is composed of a liquid containing disc, and the inner ring gas mixing chamber is designed with high and low slopes, has the function of directional liquid guiding on soup, realizes easy cleaning, and can effectively prevent the phenomenon that the liquid containing disc is blackened due to the fact that spilled liquid is burnt out.

In order to realize the gas supply of the outer ring gas mixing chamber, a mode of connecting a gas pipeline or other modes in the prior art can be directly adopted, preferably, a base is further arranged below the liquid containing disc, the base is provided with an outer ring gas channel at a position corresponding to the outer ring gas mixing chamber, the supporting legs are hollow, and the upper port and the lower port of the supporting legs are respectively communicated with the outer ring gas mixing chamber and the outer ring gas channel. The support leg has the dual-purpose function of one object, and on one hand, the support leg plays a role of supporting the outer ring gas mixing chamber, and on the other hand, the support leg plays a role of a supply channel of outer ring fuel gas.

In order to realize the air supply of the inner ring air mixing chamber, the air supply mode of the outer ring air mixing chamber can be directly adopted in a mode of connecting the pipeline with the fuel gas, or in other manners in the prior art, preferably, the base is provided with a central gas channel communicated with the first through hole.

In order to realize that the gas of central gas passageway can be shunted, reduce the velocity of flow, realize the steady flame effect of inner ring fire hole, from the simple angle of processing, preferably, the pore wall part of first through-hole is connected with the cylindric cavity, the upper end of cylindric cavity is open, and the lower extreme is sealed, and the annular wall of cylindric cavity will central gas passageway separates into the central cavity that is located the center and around the outer Zhou Qiangshi of central cavity, the periphery cavity just is for the part of inner ring gas mixing chamber, offer on the annular wall of cylindric cavity with the air intake that secondary air inlet passageway linked together. Meanwhile, if the overflowed liquid enters the air outlet, the overflowed liquid can flow out from the air inlet after passing through the air supplementing channel, and the overflowed liquid has the function of guiding the overflowed liquid to the liquid containing disc in a directional way; the outer Zhou Qiangshi can also reduce the gas flow rate of the inner ring fire holes, so that the dynamic pressure of the inner ring fire holes is changed into static pressure in the inner ring gas mixing chamber, and the flame stabilization is realized to increase the combustion capacity, thereby achieving the purpose of full overall combustion.

In order to supply the fuel gas to the inner ring fire cover, the inner ring fire cover comprises a concentric annular outer wall surface and an annular inner wall surface, a gap between the two forms a third through hole for the fuel gas of the central fuel gas channel to pass through, and the outer wall surface is connected with the inner wall surface through a connecting section.

In order to supply air to the inner ring fire cover, the inner ring fire cover is covered with a cover plate, an annular gap between the outer wall surface and the inner wall surface of the inner ring fire cover is covered, an air outlet is formed in the center of the top of the cover plate, and a hollow part surrounded by the inner wall surface of the inner ring fire cover and the hollow part of the cylindrical cavity form an air supplementing channel which is vertically communicated with the air inlet and the air outlet.

In order to prevent the ignition needle and the thermocouple from being interfered by external wind, a semi-closed groove for installing the ignition needle is formed in the outer side of the hole wall of the first through hole, an ignition hole is formed in the inner side wall of the liquid containing disc corresponding to the semi-closed groove, and a fire protection hole corresponding to the thermocouple is formed in one side of the ignition hole. The ignition hole is used for guaranteeing the normal ignition of the ignition needle, and the protection hole is used for preventing the flame on the thermocouple from being extinguished.

Compared with the prior art, the utility model has the advantages that the pot support legs are arranged on the outer ring wall surface of the outer ring air mixing chamber, so that the whole pot support legs are suspended and do not contact with the kitchen range panel after design, the abrasion of the pot support legs to the kitchen range panel in the cooking process is reduced, the pot support legs are not contacted with the kitchen range panel, and the heat dissipation of the pot support legs to the kitchen range panel can be reduced; in addition, the air mixing chamber is a split structure of an inner ring air mixing chamber formed by an outer ring air mixing chamber and a liquid containing disc, and meanwhile, a gap between the outer ring air mixing chamber and the inner ring air mixing chamber also forms a secondary air inlet channel for supplying air to the inner ring, so that the movable and easy-to-clean characteristics are realized, and the air supply effect to the inner ring can be effectively improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 at another angle;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 3;

FIG. 6 is a schematic structural diagram of an inner ring air mixing chamber according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the structure of an outer ring air mixing chamber according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of an inner ring fire cover according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 8, the burner of the present embodiment of the present utility model comprises a split-type gas mixing chamber 1, the gas mixing chamber 1 is an outer ring gas mixing chamber 11 and an inner ring gas mixing chamber 120, wherein the inner ring gas mixing chamber 120 is composed of a liquid containing plate 12 located below the outer ring gas mixing chamber, a bottom wall 113 of the outer ring gas mixing chamber 11 is provided with three supporting feet 10, the outer ring gas mixing chamber 11 is supported on the liquid containing plate 12 through the supporting feet 10, the liquid containing plate 12 for guiding overflows is arranged below the outer ring gas mixing chamber 11, the liquid containing plate 12 can support the lower end of the supporting feet 10, a first through hole 121 is arranged in the center of the liquid containing plate 12, the hole wall of the first through hole 121 is provided with an inner ring fire cover 5 in an upward protruding manner, the hollow parts of the first through hole 121 and the inner ring fire cover 5 jointly form the inner ring gas mixing chamber 120, and the outer periphery of the liquid containing plate 12 at the first through hole 121 is provided with three second through holes 122 communicated with the supporting feet 10, the hole walls of the second through holes 122 protrude upward, and the hole walls of the second through holes 122 support the lower end of the supporting feet 10. While the bottom wall 113 of the outer annular air-mixing chamber 11 and the gap between the liquid-containing plates 12 form a secondary air intake passage 2 for supplementing air to the periphery of the inner annular air-mixing chamber 120. The bottom of the outer ring air mixing chamber 11 is a secondary air inlet channel, the air quantity supplied to the inner ring by the secondary air inlet channel is increased, the full combustion of the inner ring is facilitated, meanwhile, the liquid containing disc and the inner ring air mixing chamber 120 correspondingly sink due to the supporting legs supporting the outer ring air mixing chamber, compared with the inner ring air mixing chamber 120 in the prior art, the secondary air mixing chamber is lower, and is directly positioned on the same plane with the secondary air inlet channel, so that secondary air is ensured to directly right face to the fire outlet hole of the inner ring fire cover after passing through the secondary air inlet channel, the supply resistance of the secondary air to the inner ring flame is reduced, and the secondary air is supplied more rapidly; in addition, the soup has the function of guiding liquid to the liquid containing plate in a directional way, so that the soup is easy to clean, and the phenomenon that the liquid containing plate is blackened due to the fact that spilled liquid is burnt out and dried can be effectively prevented.

In this embodiment, the outer ring air mixing chamber 11 includes an inner ring wall surface 111 and an outer ring wall surface 112 which are annular and concentrically arranged at intervals, and a bottom wall 113 connecting the inner ring wall surface 111 and the outer ring wall surface 112, the outer ring fire cover 4 is covered above the inner ring wall surface 111 and the outer ring wall surface 112, the bottom wall of the outer ring air mixing chamber 11 gradually inclines upwards from outside to inside, and the outer ring air mixing chamber 11 is fixed with pot supporting feet 3 arranged at intervals along the circumferential direction, the pot supporting feet 3 include fixing parts 31 fixed at the outer side of the outer ring air mixing chamber 11, and free ends 32 bent upwards and outwards by the tail ends of the fixing parts 31, the whole pot supporting feet 3 are not in contact with the stove panel 20 after being designed, so that the abrasion of the pot supporting feet 3 to the stove panel 20 in the cooking process is reduced, and meanwhile, the heat dissipation of the pot supporting feet 3 to the stove panel 20 can be reduced. Preferably, the bottom wall 113 of the outer ring air mixing chamber 11 gradually slopes upwards from outside to inside, which corresponds to the gradual upwards slope of the top wall of the secondary air inlet channel 2 from outside to inside, so that the design benefits mainly include the following three aspects: first: the secondary air inlet channel 2 is also provided with a slope design, so that the suction effect on the outside air can be enhanced, and the air supply speed is improved; the secondary air is guided directionally by the design of the slope with high inside and low outside of the secondary air inlet channel 2, so that the secondary air is ensured to right face the fire outlet hole of the inner ring fire cover 5 after passing through the secondary air inlet channel 2, the supply resistance of the secondary air to the inner ring flame is reduced, and the secondary air is supplied more rapidly; the structural design of the bottom wall 113 of the outer ring air mixing chamber 11 with high inside and low outside has a heat collection effect, so that the heat dissipation of the inner part of the outer ring air mixing chamber 11 outwards can be reduced, and more heat can be used for heating air; fourth, the gas mixing chamber 1 is split to realize the mobility, only remain the liquid containing plate 12 basically taking the plane after dismantling the outer loop gas mixing chamber 11, and the design of the slope of the high outside in the outer loop gas mixing chamber has the effect of guiding liquid to the liquid containing plate 12 in a certain direction to the hot water, realizes easy cleaning, in order to prevent effectively that the overflow from being burnt out and forming the phenomenon that the liquid containing plate 12 turns black.

In addition, the burner in this embodiment further includes a base 6 disposed below the liquid containing tray 12, the base 6 has an outer ring gas channel 62 at a position corresponding to the outer ring gas mixing chamber 11, and the support leg 10 is hollow, the upper and lower ports of the support leg 10 are respectively connected to the outer ring gas mixing chamber 11 and the outer ring gas channel 62, and the base 6 further has a central gas channel 61 connected to the first through hole 121. The inner ring fire cover 5 includes concentric annular outer wall surface 51 and annular inner wall surface 52, and a gap between the two forms a third through hole 30 through which the fuel gas of the central fuel gas channel 61 passes, and the outer wall surface 51 and the inner wall surface 52 are connected by a connecting section 53. In order to realize that the gas of the central gas channel 61 can be split, the flow speed is reduced, the flame stabilizing effect of the inner annular fire hole is realized, from the viewpoint of simple processing, the hole wall of the first through hole 121 is locally connected with the cylindrical cavity 9, the upper end of the cylindrical cavity 9 is open, the lower end is closed, the annular wall 91 of the cylindrical cavity 9 divides the central gas channel 61 into a central cavity 611 positioned at the center and an outer Zhou Qiangshi 612 surrounding the central cavity 611, the outer Zhou Qiangshi 612 is a part of the inner annular gas mixing chamber 120, and an air inlet 613 communicated with the secondary air inlet channel 2 is formed in the connecting part of the annular wall 91 of the cylindrical cavity 9 and the hole wall of the first through hole 121. The inner ring fire cover 5 is covered with a cover plate 7, an annular gap between the outer wall surface 51 and the inner wall surface 52 of the inner ring fire cover 5 is covered, an air outlet 71 is formed in the center of the top of the cover plate 7, and an air supplementing channel 72 which is vertically communicated with the hollow part of the cylindrical cavity 9 and communicated with the air inlet 613 and the air outlet 71 is formed in the hollow part surrounded by the inner wall surface 52 of the inner ring fire cover 5. If the overflow enters the air outlet 71, the overflow can flow out from the air inlet 613 after passing through the air supplementing channel 72, and the overflow has the function of guiding the liquid to the inner ring air mixing chamber 120.

Finally, in order to prevent the ignition needle and the thermocouple from being disturbed by external wind, the outer side of the hole wall of the first through hole 121 is provided with a semi-closed groove 1211 for installing the ignition needle 50, the inner side wall of the tray body corresponding to the semi-closed groove 1211 is provided with an ignition hole 1212, one side of the tray body, which corresponds to the thermocouple 60, is provided with a fire protection hole 1213, the ignition hole 1212 is used for ensuring the normal ignition of the ignition needle, and the fire protection hole 1213 is used for preventing the flame on the thermocouple from being extinguished.

Therefore, the air mixing chamber 1 is divided into the outer ring air mixing chamber 11 and the inner ring air mixing chamber 120, the two are vertically split and movable, the outer ring air mixing chamber 11 and the pot support legs 3 are combined into a whole, the problems of abrasion and heat dissipation of a pot support to a panel are solved, the problem of easy cleaning of the air mixing chamber 1 is solved, meanwhile, a secondary air inlet channel 2 is formed by a gap between the outer ring air mixing chamber 11 and the inner ring air mixing chamber 120, secondary air can be provided for an inner ring just, the bottom circle of the outer ring air mixing chamber 11 is the secondary air inlet channel, the air volume supplied to the inner ring by the secondary air inlet channel is increased, and the full combustion of the inner ring is facilitated. The heat of the pot support legs 3 can be transferred to secondary air through the outer ring air mixing chamber 11 to achieve the aim of preheating the secondary air, so that the heat efficiency of the kitchen range is effectively improved, and the liquid containing disc 12 has the function of directional liquid guiding on soup, so that the kitchen range is easy to clean.

Claims

1. The utility model provides a combustor, including outer ring air mixing chamber (11), outer ring air mixing chamber (11) are including being annular and concentric inner circle wall (111) and outer lane wall (112) that the interval set up and connect diapire (113) of inner circle wall (111) and outer lane wall (112), inner circle wall (111) and outer lane wall (112) top cover have outer ring fire lid (4), its characterized in that: at least three pot supporting feet (3) which are arranged at intervals along the circumferential direction are arranged on the outer ring wall surface (112) of the outer ring gas mixing chamber (11).

2. Burner according to claim 1, characterized in that the pan leg (3) comprises a fixing portion (31) fixed to the outer ring wall (112) of the outer ring plenum (11) and a free end (32) extending upwardly and outwardly from the end of the fixing portion (31).

3. The burner according to claim 1, further comprising a liquid containing tray (12) and an inner ring air mixing chamber (120) disposed on the inner periphery of the outer ring air mixing chamber (11), wherein the outer ring air mixing chamber (11) and the inner ring air mixing chamber (120) are respectively and independently disposed on the liquid containing tray (12).

4. A burner according to claim 3, characterized in that the outer annular air-mixing chamber (11) is supported above the liquid-containing pan (12) by means of at least two spaced support feet (10), the gap between the bottom wall of the outer annular air-mixing chamber (11) and the liquid-containing pan (12) forming a secondary air intake channel (2) for supplementing air to the periphery of the inner annular air-mixing chamber (120).

5. Burner according to claim 4, characterized in that the liquid tray (12) is provided with a second through hole (122) at a position corresponding to the supporting leg (10), and the lower end of the supporting leg (10) is supported on the top end of the hole wall of the second through hole (122).

6. Burner according to claim 4, characterized in that the bottom wall (113) of the outer annular plenum (11) slopes gradually upwards from the outside to the inside.

7. Burner according to any one of claims 4 to 6, characterized in that a base (6) is further arranged below the liquid containing disc (12), the base (6) is provided with an outer ring gas channel (62) at a position corresponding to the outer ring gas mixing chamber (11), the supporting leg (10) is hollow, and the upper port and the lower port of the supporting leg (10) are respectively communicated with the outer ring gas mixing chamber (11) and the outer ring gas channel (62).

8. The burner according to claim 7, characterized in that a first through hole (121) is formed in the central portion of the liquid containing disc (12), the hole wall of the first through hole (121) protrudes upwards, the top of the hole wall is covered with an inner ring fire cover (5), and the hollow portions of the first through hole (121) and the inner ring fire cover (5) jointly form the inner ring gas mixing chamber (120).

9. Burner according to claim 8, characterized in that said base (6) has a central gas passage (61) communicating with said first through hole (121).

10. Burner according to claim 9, characterized in that the wall of the first through hole (121) is locally connected with a cylindrical cavity (9), the upper end of the cylindrical cavity (9) is open, the lower end is closed, and the annular wall (91) of the cylindrical cavity (9) divides the central gas channel (61) into a central chamber (611) at the center and an outer Zhou Qiangshi (612) surrounding the central chamber (611), the outer Zhou Qiangshi (612) is a part of the inner ring gas mixing chamber (120), and an air inlet (613) communicating with the secondary air inlet channel (2) is formed in the annular wall (91) of the cylindrical cavity (9).

11. Burner according to claim 10, characterized in that said inner annular cover (5) comprises concentric annular outer wall (51) and annular inner wall (52), the gap between them constituting a third through hole (30) for the passage of the gas of said central gas channel (61), said outer wall (51) being connected to said inner wall (52) by a connecting section (53).

12. The burner according to claim 11, characterized in that the inner ring fire cover (5) is covered with a cover plate (7), an annular gap between an outer wall surface (51) and an inner wall surface (52) of the inner ring fire cover (5) is covered, an air outlet (71) is formed in the center of the top of the cover plate (7), and a hollow part surrounded by the inner wall surface (52) of the inner ring fire cover (5) and a hollow part of the cylindrical cavity (9) form an air supplementing channel (72) which is vertically communicated with the air inlet (613) and the air outlet (71).

13. The burner according to any one of claims 9 to 12, wherein: the outer side of the hole wall of the first through hole (121) is provided with a semi-closed groove (1211) for installing an ignition needle, an ignition hole (1212) is formed in the inner side wall of the liquid containing disc (12) corresponding to the semi-closed groove (1211), and a fire protection hole (1213) corresponding to a thermocouple is formed in one side of the ignition hole (1212) of the liquid containing disc (12).