CN111750353A - Burner for gas stove - Google Patents

Abstract

The invention relates to a burner for a gas stove, which comprises a base; the central channel is of a cylindrical structure with an upward opening and is arranged at the central part of the base; the outer ring gas channel that sets up the peripheral position at base center channel sets up on outer ring gas channel to be formed with outer ring gas mixing chamber, have the outer ring fire lid of the main fire portion that is linked together with outer ring gas mixing chamber, its characterized in that: the cooker comprises a central passage, a movable part arranged in the central passage, a peripheral shielding piece used for shielding the main fire part, and a partition part arranged in a secondary air supplementing passage, wherein the movable part can be directly triggered under the action of placing a cooker on the movable part, so that the main fire part is exposed.

Description

Burner for gas stove

Technical Field

The invention relates to the field of gas cookers, in particular to a burner for a gas cooker, which is used for lifting a pot and shutting off fire.

Background

Present big desk-top stir-fry kitchen, middling pressure fry kitchen, often need open earlier gas, reuse ignition rod or burning torch ignite, open air supply system at last, just can normally burn, work such as fry, the operation is very inconvenient to during the interval of adding condiments, sabot and repeated operation, the stove fire is still burning constantly, and oil gas fuel's waste is very big, and air supply system also does not stop work, causes the waste of electricity. The invention discloses a full-automatic energy-saving stove, which is a Chinese invention patent with the patent number ZL200420034149.3 (with the publication number CN2731307Y), and comprises a stove body, and is characterized by also comprising a control rod and a follow-up skewer, wherein the follow-up skewer is arranged in the stove body and can move up and down along with the placement and lifting of a pot on the stove body; the lower end of the follow-up skewer is movably connected with the control rod in a mode that the lower end of the follow-up skewer is connected with one end of the control rod, the other end of the follow-up skewer is fixed on the stove body in a rotatable mode, when the pot is placed on the stove, the follow-up skewer is pressed to move downwards, so that the moving end of the control rod moves downwards, the fuel control switch, the ignition control switch and the air blower control switch are switched on, the supply of oil gas fuel is switched on, the air blower is ignited, and the full-automatic energy-saving stove starts to work. When the pan is lifted, the follow-up skewer moves upwards, the moving end of the control rod moves upwards, and the fuel control switch, the ignition control switch and the blower control switch are switched off, so that the full-automatic energy-saving stove stops working, and the pan is placed, ignited and lifted to be closed. The switch and the ignition control switch are controlled by the up-and-down movement of the follower skewer, but the requirement for the circuit part is high by the control in this way.

At present, due to the injection effect of combustion hot air flow during combustion of a combustor, primary air and secondary air are sucked by the inner fire cover and the outer fire cover through the air mixing chamber, and further improvement is needed in order to prevent the inner ring and the outer ring from influencing each other when secondary air is sucked by the inner ring and the outer ring and to achieve sufficient combustion of the inner ring and the outer ring.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a burner for a gas stove, which can effectively avoid the mutual influence of the inner ring and the outer ring when the secondary air is sucked.

The second technical problem to be solved by the invention is to provide a burner for a gas stove, which can simply open an outer ring fire by sitting on a pot and can effectively supplement secondary air in the cooking process.

The third technical problem to be solved by the present invention is to provide a burner for a gas stove, which can change the size of the inner ring fire when a user sits on a pot, in view of the above-mentioned current state of the art.

A fourth technical problem to be solved by the present invention is to provide a burner for a gas stove, which can effectively improve the combustion efficiency, in view of the above-mentioned prior art.

The technical scheme adopted by the invention for solving the first technical problem is as follows: this a combustor for gas-cooker, the combustor includes:

a base;

the central gas channel is of a cylindrical structure with an upward opening and is arranged at the central part of the base;

the inner ring fire cover is arranged on the inner ring gas channel, forms an inner ring gas mixing chamber and is provided with a fire outlet part communicated with the inner ring gas mixing chamber;

the outer ring gas channel is arranged at the peripheral part of the central channel of the base;

the outer ring fire cover is arranged on the outer ring gas channel, is provided with an outer ring gas mixing chamber and is provided with a main fire part communicated with the outer ring gas mixing chamber;

the air supplementing cavity is formed between the inner ring air mixing chamber and the outer ring air mixing chamber;

the base is also provided with a plurality of radial secondary air supplementing channels at intervals along the circumferential direction, and the secondary air supplementing channels are used for communicating the air supplementing cavity with the outside;

the method is characterized in that:

the moving part sets up in the central passage, including the peripheral shielding piece that is used for sheltering from main fire portion, the moving part can be shelved at the pan and can directly be triggered under the action on it to realize exposing of main fire portion, and the moving part is still including setting up the partition portion in secondary tonifying qi passageway, the partition portion can with secondary tonifying qi passageway is separated into two relatively independent spaces, communicates respectively that the outer loop mixes the regional main fire portion of gas chamber and the play fire portion region of central authorities' gas chamber.

Further, the moving part is divided into three parts from bottom to top according to the change of the cross section: with straight portion, the portion of narrowing and the bellmouth constriction portion up of central authorities ' gas passageway's internal diameter looks adaptation still include that the afterbody lies in elastically the constriction portion of actuating lever, the head of actuating lever expose in the inner ring fire lid, and central authorities ' gas passageway is provided with and supplies the fixing base of constriction portion relative its removal.

For solving second technical problem, preferably, the partition portion is an annular partition wall, the partition wall with straight portion is connected through first horizontal connecting rod, the top of partition wall extends to first horizontal connecting rod and has an inverted L-shaped baffle, peripheral shielding piece is vertical shielding plate, vertical shielding plate with connect through second horizontal connecting rod between the lateral wall of partition wall, the bottom of partition wall extends downwards to second connecting rod, and towards secondary tonifying qi passageway extends has horizontal partition portion. The driving rod drives the contraction part to move downwards relative to the fixing seat, so that the peripheral shielding part is driven to move downwards, the top cover and the lower shielding part move downwards along with the outer sleeve, the top cover can at least partially shield the fire outlet part, the air outlet area of the fire outlet part is changed, meanwhile, the lower shielding part can be driven to move downwards, the horizontal partition part of the partition part can divide the secondary air supply channel into two parts, hot air flow after combustion and high temperature of a combustor are effectively prevented from supplying the fire outlet area of the fire outlet part and the main fire part, and the mutual entrainment of secondary air between the fire outlet part and the main fire part is avoided.

In order to better realize the fire shutting of the lifting pot of the outer ring fire, preferably, the outer ring fire cover comprises a ring-shaped part and an annular body arranged in the ring-shaped part, and the annular body is provided with a main fire part which is communicated with the outer ring gas mixing chamber and can spray mixed gas towards the inner ring fire cover.

The transmission piece is also specially designed, preferably, a transmission piece for transmitting the fuel gas in the outer ring fuel gas channel to the annular part is arranged between the annular part and the outer ring fuel gas channel, the transmission piece comprises an inner ring wall, an outer ring wall and a connecting wall, wherein the inner ring wall and the outer ring wall are concentrically arranged at intervals, the connecting wall is provided with at least two vertical outer ring gas supplementing channels which are independent from the secondary gas supplementing channels and used for supplementing secondary air to the main fire part along the circumferential direction, the inner side of each vertical outer ring gas supplementing channel corresponding to the connecting wall is provided with a vertical connecting part communicated with the outer ring fuel gas channel and a horizontal connecting part which is positioned between two adjacent vertical connecting parts and extends outwards along the radial direction, and the secondary gas supplementing channel radially penetrates through the bottom of the connecting wall.

Further, the transmission piece coats and is stamped cyclic annular apron, cyclic annular apron is including the first apron portion that corresponds outer loop gas fired passageway and the second apron portion that corresponds horizontal connection portion, forms the confession between the adjacent second apron portion the breach that vertical outer loop tonifying qi passageway exposed, each the peripheral portion of breach articulates there is the third apron portion that is used for covering vertical outer loop tonifying qi passageway. When shelving on the moving part in order to realize the pan to drive moving down of peripheral shielding piece, thereby can expose main fire portion, can also push down the third apron portion this moment for outer loop tonifying qi passageway exposes, and then supplyes secondary air to main fire portion, promotes the abundant burning of main fire portion.

Preferably, an actuating member capable of actuating the third cover plate to open or close relative to the vertical outer ring air replenishing channel is arranged on the third cover plate, and the actuating member can actuate the third cover plate to rotate under the action of downward movement of the peripheral shielding member. In order to better actuate the third cover plate part, the actuating part can better drive the third cover plate part to rotate when the peripheral shielding part moves downwards, so that the outer ring air supplementing channel is exposed, secondary air is supplemented to the main fire part, and the full combustion of the main fire part is promoted.

Furthermore, the pipe wall of the central gas channel is provided with a through hole for the horizontal connecting rod to penetrate through, the head of the driving rod can directly move downwards relative to the contraction part under the action of placing a pot on the driving rod, then the contraction part is driven to move downwards relative to the fixing seat, finally the peripheral shielding part is driven to move downwards relative to the main fire part, the moving part is provided with a cavity for gas in the central gas channel to flow into, the cavity is in fluid communication with the inner ring fire cover, the wall part of the moving part is provided with at least one gas hole for gas in the central gas channel to flow into, and the straight part limits that the gas can only flow into the inner ring fire cover through the gas hole.

Further, the periphery of actuating lever is provided with the outer tube, the central authorities of shrink portion have the confession the spacing groove of outer tube relative movement, the outer tube with interior ring fire lid an organic whole sets up, the bottom of spacing groove is provided with first supporting rod, the upper end of first supporting rod with be connected with first elastic component between the lower extreme of actuating lever, the outer tube cover is established the periphery of first supporting rod, and in the interval has between the bottom of spacing groove, the setting up of first elastic component can make the head of actuating lever have all the time expose in the trend at the top of outer tube.

Furthermore, the bottom of the contraction part is provided with a contraction foot which contracts inwards along the radial direction, a second elastic piece is sleeved on the contraction foot, the tail end of the second elastic piece is connected into the central pipeline of the fixed seat, and the arrangement of the second elastic piece enables the contraction part to always have the tendency of returning to the original position.

To solve the third technical problem, preferably, the inner ring fire cover includes an annular wall surface connected to a top portion of the central gas channel, the fire outlet portion disposed on the annular wall surface, and a top cover covering the annular wall surface, the top cover is integrally disposed with the driving rod, and a head portion of the driving rod is exposed from the top cover,

compared with the prior art, the invention has the advantages that when the pan is placed on the central gas channel, the moving part is pressed to move downwards and simultaneously drives the peripheral shielding piece to move downwards so as to expose the fire outlet part for cooking, when the pan is lifted to leave the central gas channel, the moving part moves upwards again and simultaneously drives the peripheral shielding piece to move upwards so as to realize the purpose that the pan is lifted to close the outer ring fire, the furnace fire is still continuously burnt during the interval time periods of seasoning and pan loading in the cooking process, the purposes of saving fuel and saving energy are realized, in addition, two independent air supplementing channels can be formed by the separation effect of the separation part of the moving part in the downward moving process, the mutual entrainment effect of hot air flow after burning and the high temperature of the burner on secondary air supplemented between the main fire part and the fire outlet part is effectively avoided, the air supply effect is effectively improved, so that the flame of the burner is short, and the secondary air is not easy to burn and, Uniform and powerful, and no yellow flame, tempering and other defects.

Drawings

FIG. 1 is a schematic view of a burner according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of an angle of the transmission member according to an embodiment of the present invention;

FIG. 4 is a schematic view of another angle of the transfer member in the embodiment of the present invention;

FIG. 5 is a cross-sectional view of an angle of the transfer member in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of another angle of the transfer member in an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the burner of an embodiment of the present invention shown with the outer ring fire closed;

FIG. 8 is a cross-sectional view of the burner in a cooking position (with the outer ring fire open with the pot in place) in accordance with an embodiment of the present invention;

FIG. 9 is a cross-sectional view of the slight movable element of FIG. 8;

FIG. 10 is a schematic view of an angle of the moveable member of the present invention;

FIG. 11 is a cross-sectional view of the moveable member of FIG. 10 at another angle;

fig. 12 is a schematic structural diagram of an annular cover plate according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 12, which are preferred embodiments of the present invention, the burner for a gas stove in the present embodiment includes a base 1, a central gas channel 11 disposed at a central portion of the base 1, the central gas channel 11 being a cylindrical structure with an upward opening, an inner ring fire cover 4 disposed on the central gas channel 11 and formed with an inner ring gas mixing chamber 41, the inner ring fire cover 4 having a fire outlet 42 communicated with the inner ring gas mixing chamber 41; the outer ring gas channel 12 is arranged at the periphery of the central gas channel 11 of the base 1, the outer ring fire cover 2 is arranged on the outer ring gas channel 12 and forms an outer ring gas mixing chamber 21, and the outer ring fire cover 2 is provided with a main fire part 22 communicated with the outer ring gas mixing chamber 21; wherein, an air supply cavity 500 is formed between the inner ring air mixing chamber 41 and the outer ring air mixing chamber 21, a plurality of radial secondary air supply channels 400 for communicating the air supply cavity 500 with the external secondary air supply channels 400 are arranged on the base 1 at intervals along the circumferential direction, wherein a movable part 3 is arranged in the central gas channel 11, the movable part 3 comprises a peripheral shielding piece 3a for shielding the main fire part 22, the movable part 3 can be directly triggered under the action of the pot placed on the movable part 3, so that the exposure of the main fire part 22 is realized, the movable part 3 further comprises a separation part 30 arranged in the secondary air supply channels 400, the separation part 30 can separate the secondary air supply channels 400 into two relatively independent spaces, and the main fire part 22 area of the outer ring air mixing chamber 21 and the fire outlet part 42 area of the inner ring air mixing chamber 41 are respectively communicated. When a pot is placed on the central gas channel 11, the movable part 3 moves downwards under pressure and drives the peripheral shielding part 3a to move downwards, so that the fire outlet part 42 is exposed for cooking, when the pot is lifted to leave the central gas channel 11, the movable part 3 moves upwards again and drives the peripheral shielding part 3a to move upwards, so that the outer ring fire is closed by lifting the pot, the furnace fire is still continuously burnt during the interval time periods of seasoning and tray loading in the cooking process, the purposes of saving fuel and saving energy are realized, two independent air supply channels can be formed by the separation effect of the separation part 30 of the movable part 3 during the downward movement process, the mutual entrainment effect of hot air flow after burning and the high temperature of the burner on secondary air supplied between the main fire part 22 and the fire outlet part 42 is effectively avoided, the air supply effect is effectively improved, so that the flame of the burner is short, and the energy is saved, Uniform and powerful, and no yellow flame, tempering and other defects.

Specifically, the moving member 3 is divided into three parts from bottom to top according to the change of the cross section: the straight portion 31, the narrowed portion 32 and the contraction portion 33 with the upward bell mouth that are matched with the internal diameter of the central gas channel 11 also include the contraction portion 33 that the tail portion is elastically located at the driving rod 34, the head portion of the driving rod 34 is exposed out of the inner ring fire cover 4, and the central gas channel 11 is provided with a fixing seat 111 that can enable the contraction portion 33 to move relative to the central gas channel. The partition portion 30 of this embodiment is an annular partition wall, the partition wall is connected to the straight portion 31 through the first horizontal connecting rod 5d, the top of the partition wall extends to the first horizontal connecting rod 5d to form the inverted L-shaped partition plate 301, the peripheral shielding piece 3a is a vertical shielding plate, the vertical shielding plate is connected to the side wall of the partition wall through the second horizontal connecting rod 5a, and the bottom of the partition wall extends downward to the second horizontal connecting rod 5a and extends to the secondary air supply passage 400 to form the horizontal partition portion 301 a. The driving rod 34 drives the contraction part 33 to move downwards relative to the fixing seat 111, so that in the process of driving the peripheral shielding piece 3a to move downwards, the top cover 401 and the lower shielding part move downwards along with the outer sleeve 5, wherein the top cover 401 can at least partially shield the fire outlet part 42, so that the air outlet area of the fire outlet part 42 is changed, and meanwhile, the horizontal partition part 301a of the partition part 30 can divide the secondary air supply channel 400 into two parts, thereby effectively avoiding hot air flow after combustion and high temperature of a combustor from influencing the fire outlet area of the fire outlet part 42 and the main fire part 22, and avoiding mutual entrainment of secondary air between the fire outlet part 42 and the main fire part 22. In order to achieve the pot-lifting fire-stopping of the outer ring fire, the outer ring fire cover 2 comprises an annular part 23 and an annular body 24 arranged in the annular part 23, wherein the annular body 24 is provided with a main fire part 22 which is communicated with the outer ring gas mixing chamber 21 and can spray mixed gas towards the inner ring fire cover 4. The transmission member 600 of this embodiment is also specially designed, a transmission member 600 for transmitting the fuel gas in the outer ring fuel gas channel 12 to the annular member 23 is disposed between the annular member 23 and the outer ring fuel gas channel 12, the transmission member 600 includes an inner annular wall 6001, an outer annular wall 6002 and a connecting wall 6003 connecting the inner annular wall 6001 and the outer annular wall 6002, which are concentrically disposed at intervals, the connecting wall 6003 is circumferentially provided with at least two passages independent of the secondary gas supply channel 400, and a vertical outer ring gas supplementing channel 6004 for supplementing secondary air to the main fire portion 22, the inner side of the connecting wall 6003 corresponding to each vertical outer ring gas supplementing channel 6004 is provided with a vertical connecting portion 6005 communicated with the outer ring gas channel 12 and a horizontal connecting portion 6006 located between two adjacent vertical connecting portions 6005 and extending radially outward, and the secondary gas supplementing channel 400 radially penetrates through the bottom of the connecting wall 6003. The transmission piece 600 is covered with an annular cover plate 700, the annular cover plate 700 comprises a first cover plate part 7001 corresponding to the outer ring gas channel 12 and a second cover plate part 7002 corresponding to the horizontal connecting part 6006, notches 7003 exposed from the vertical outer ring gas supplementing channel 6004 are formed between the adjacent second cover plate parts 7002, and the peripheral part of each notch 7003 is hinged with a third cover plate part 7004 for covering the vertical outer ring gas supplementing channel 6004. In order to realize that the cookware is placed on the moving part 3, the peripheral shielding part 3a is driven to move downwards, so that the main fire part 22 can be exposed, the third cover plate part 7004 can be pressed downwards, the outer ring air supplementing channel is exposed, secondary air is supplemented to the main fire part 22, and the sufficient combustion of the main fire part 22 is promoted. Preferably, an actuating member 800 is arranged on the third cover plate portion 7004 and can actuate the third cover plate portion 7004 to open or close relative to the vertical outer ring air replenishing channel 6004, the actuating member 800 can actuate the third cover plate portion 7004 to rotate under the action of the peripheral shielding member 3a moving downwards, and in order to actuate the third cover plate portion 7004 better, the actuating member 800 can better drive the third cover plate portion 7004 to rotate when the peripheral shielding member 3a moves downwards, so that the outer ring air replenishing channel is exposed, secondary air is replenished to the main fire portion 22, and sufficient combustion of the main fire portion 22 is promoted. The pipe wall of the central gas channel 11 is further provided with a through hole 110 through which the horizontal connecting rod penetrates, the head of the driving rod 34 can directly move downwards relative to the contraction part 33 under the action of the cooker placed on the driving rod, then the contraction part 33 is driven to move downwards relative to the fixed seat 111, and finally the peripheral shielding piece 3a is driven to move downwards relative to the main fire part 22, the movable piece 3 is provided with a cavity 321 into which gas in the central gas channel 11 flows, the cavity 321 is in fluid communication with the inner ring fire cover 4, the wall of the movable piece 3 is provided with at least one gas hole 322 into which gas in the central gas channel 11 flows, and the straight part 31 limits that only the gas hole 322 can flow into the inner ring fire cover 4. In addition, an outer sleeve 5 is arranged on the periphery of the driving rod 34, a limiting groove 331 for relative movement of the outer sleeve 5 is formed in the center of the contraction portion 33, the outer sleeve 5 and the inner ring fire cover 4 are integrally arranged, a first supporting rod 6 is arranged at the bottom of the limiting groove 331, a first elastic part 7 is connected between the upper end of the first supporting rod 6 and the lower end of the driving rod 34, the outer sleeve 5 is sleeved on the periphery of the first supporting rod 6, a gap is formed between the bottoms of the limiting grooves 331, and the first elastic part 7 is arranged so that the head of the driving rod 34 always tends to be exposed out of the top of the outer sleeve 5. The bottom of the contracting portion 33 has a contracting leg 332 which contracts inwards along the radial direction, the contracting leg 332 is sleeved with a second elastic member 8, the tail end of the second elastic member 8 is connected in the central pipeline of the fixing seat 111, and the arrangement of the second elastic member 8 enables the contracting portion 33 to always have the tendency of returning to the original position. In addition, the inner ring fire cover 4 includes an annular wall surface 400 connected to the top of the central gas passage 11, a fire outlet portion 42 provided on the annular wall surface 400, and a top cover 401 covering the annular wall surface 400, the top cover 401 is provided integrally with the driving rod 34, and the head of the driving rod 34 is exposed out of the top cover 401.

Claims (13)

1. A burner for a gas range, said burner comprising:

a base (1);

the central gas channel (11), the central gas channel (11) is a cylindrical structure with an upward opening, and is arranged at the central part of the base (1);

the inner ring fire cover (4) is arranged on the central gas channel (11), is provided with an inner ring gas mixing chamber (41) and is provided with a fire outlet part (42) communicated with the inner ring gas mixing chamber (41);

an outer ring gas channel (12) arranged at the peripheral part of the central gas channel (11) of the base (1);

the outer ring fire cover (2) is arranged on the outer ring gas channel (12), is provided with an outer ring gas mixing chamber (21) and is provided with a main fire part (22) communicated with the outer ring gas mixing chamber (21);

the air supplementing cavity (500) is formed between the inner ring air mixing chamber (41) and the outer ring air mixing chamber (21);

the base (1) is also provided with a plurality of radial secondary air supplementing channels (400) at intervals along the circumferential direction, and the secondary air supplementing channels are used for communicating the air supplementing cavity (500) with the outside;

the method is characterized in that:

the moving part (3) is arranged in the central gas channel (11) and comprises a peripheral shielding piece (3a) used for shielding the main fire part (22), the moving part (3) can be directly triggered under the action of placing the moving part on the moving part in a pot tool, so that the exposure of the main fire part (22) is realized, the moving part (3) further comprises a partition part (30) arranged in the secondary air supply channel (400), the partition part (30) can divide the secondary air supply channel (400) into two relatively independent spaces, and the main fire part (22) area of the outer ring air mixing chamber (21) and the fire outlet part (42) area of the inner ring air mixing chamber (41) are respectively communicated.

2. Burner for gas cooktops according to claim 1, characterized in that: the moving part (3) is divided into three parts from bottom to top according to the change of the cross section: with straight portion (31), the portion of narrowing (32) and the ascending shrink portion of horn mouth (33) of the internal diameter looks adaptation of central gas passageway (11), still include the afterbody and lie in elastically the actuating lever (34) of shrink portion (33), the head of actuating lever (34) expose in inner ring fire lid (4), and central gas passageway (11) are provided with and supply the fixing base (111) that shrink portion (33) moved relative to it.

3. Burner for gas cooktops according to claim 2, characterized in that: partition portion (30) are for being annular partition wall, the partition wall with straight portion (31) are connected through first horizontal connecting rod (5d), the top of partition wall has inversion L type baffle (301) to extending on first horizontal connecting rod (5d), peripheral shielding piece (3a) is vertical shielding plate, vertical shielding plate with connect through second horizontal connecting rod (5a) between the lateral wall of partition wall, the bottom of partition wall extends downwards to second horizontal connecting rod (5a), and the orientation secondary tonifying qi passageway (400) extend there is horizontal partition portion (301 a).

4. Burner for gas cooktops according to any one of claims 2 to 3, characterized in that: the outer ring fire cover (2) comprises an annular part (23) and an annular body (24) arranged in the annular part (23), and the annular body (24) is provided with a main fire part (22) which is communicated with the outer ring gas mixing chamber (21) and can spray mixed gas towards the inner ring fire cover (4).

5. Burner for gas cooktops according to claim 4, characterized in that: a transmission piece (600) used for transmitting gas in the outer ring gas channel (12) to the annular part (23) is arranged between the annular part (23) and the outer ring gas channel (12), the transmission piece (600) comprises an inner annular wall (6001), an outer annular wall (6002) and a connecting wall (6003) connected between the inner annular wall (6001) and the outer annular wall (6002), which are concentrically arranged at intervals, at least two vertical outer ring gas supplementing channels (6004) which are independent of the secondary gas supplementing channel (400) and used for supplementing secondary air to the main fire part (22) are arranged on the connecting wall (6003) along the circumferential direction, vertical connecting parts (6005) communicated with the outer ring gas channel (12) and horizontal connecting parts (6006) which are located between two adjacent vertical connecting parts (6005) and extend outwards along the radial direction are arranged on the inner side of each vertical outer ring gas supplementing channel (6004), and the secondary air supply channel (400) radially penetrates the bottom of the connecting wall (6003).

6. Burner for gas cooktops according to claim 5, characterized in that: transmission piece (600) coats and is stamped cyclic annular apron (700), cyclic annular apron (700) including first apron (7001) that corresponds outer loop gas channel (12) and second apron (7002) that corresponds horizontal connecting portion (6006), form the confession between adjacent second apron (7002) breach (7003) that vertical outer loop tonifying qi passageway (6004) exposed, each the peripheral portion of breach (7003) articulates has third apron (7004) that is used for covering vertical outer loop tonifying qi passageway (6004).

7. Burner for gas cooktops according to claim 6, characterized in that: an actuating piece (800) capable of actuating the third cover plate part (7004) to open or close relative to the vertical outer ring air replenishing channel (6004) is arranged on the third cover plate part (7004), and the actuating piece (800) can actuate the third cover plate part (7004) to rotate under the triggering of the action that the peripheral shielding piece (3a) moves downwards.

8. The burner for a gas range according to any one of claims 5 to 7, wherein: the pipe wall of the central gas channel (11) is provided with a through hole (110) for the first horizontal connecting rod (5d) to penetrate out, the head of the driving rod (34) can directly move downwards relative to the contraction part (33) under the action of placing a pot thereon, then the contraction part (33) is driven to move downwards relative to the fixed seat (111), and finally the peripheral shielding piece (3a) is driven to move downwards relative to the main fire part (22), the movable piece (3) is provided with a cavity (321) for the gas in the central gas channel (11) to flow in, the cavity (321) is communicated with the inner ring fire cover (4) in a fluid mode, and the wall of the movable element (3) has at least one gas hole (322) for the inflow of gas in the central gas channel (11), the straight portion (31) limits that fuel gas can only flow into the inner ring fire cover (4) through the fuel gas hole (322).

9. Burner for gas cooktops according to claim 8, characterized in that: the periphery of actuating lever (34) is provided with outer tube (5), the central authorities of shrink portion (33) have the confession outer tube (5) relative movement's spacing groove (331), outer tube (5) with interior ring fire lid (4) an organic whole sets up, the bottom of spacing groove (331) is provided with first supporting rod (6), the upper end of first supporting rod (6) with be connected with first elastic component (7) between the lower extreme of actuating lever (34), outer tube (5) cover is established the periphery of first supporting rod (6), and in have the interval between the bottom of spacing groove (331), the setting up of first elastic component (7) can make the head of actuating lever (34) have all the time expose in the trend at the top of outer tube (5).

10. Burner for gas cooktops according to claim 9, characterized in that: the bottom of the contraction part (33) is provided with a contraction foot (332) which contracts inwards in the radial direction, a second elastic piece (8) is sleeved on the contraction foot (332), the tail end of the second elastic piece (8) is connected into the central pipeline of the fixed seat (111), and the arrangement of the second elastic piece (8) enables the contraction part (33) to have the tendency of returning to the original position all the time.

11. Burner for gas cooktops according to claim 10, characterized in that: the inner ring fire cover 4 comprises an annular wall surface (400) connected to the top of the central gas channel (11), a fire outlet portion (42) arranged on the annular wall surface (400), and a top cover (401) covered on the annular wall surface (400), wherein the top cover (401) and the driving rod (34) are integrally arranged, the head of the driving rod (34) is exposed out of the top cover (401), a groove (112) extending inwards in the radial direction is formed in the inner wall of the central gas channel (11), a third elastic piece (9) is connected to the bottom of the groove (112), the upper end of the third elastic piece (9) is connected to the top cover (401), and the third elastic piece (9) enables the top cover (401) to have a tendency of being capable of being restored to be flush with the top opening of the central gas channel (11).

12. Burner for gas cooktops according to claim 10, characterized in that: the drive rod (34) is a temperature sensor.

13. Burner for gas cooktops according to claim 12, characterized in that: and an energy gathering cover is arranged on the annular component (23) of the outer ring fire cover (2).

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