CN216557131U - Burner for gas stove and gas stove with burner - Google Patents

Abstract

The utility model relates to a burner for a gas stove and the gas stove using the burner, comprising a base and an inner fire cover, wherein the inner fire cover comprises an annular circumferential wall and a cover body covering the annular circumferential wall, and the annular circumferential wall is provided with at least two inner fire holes, which is characterized in that: the fire cover comprises at least two extension arms surrounding the inner fire cover, each extension arm is arranged along the circumferential direction of the inner fire cover at intervals and is integrally radial, at least two first outer fire holes are formed in the top wall of each outer fire cover along the length direction of the top wall, and the base is also provided with an adjusting piece capable of changing the sizes of the first outer fire holes; through the regulation of regulating part for outer fire is covered and has two kinds of states at least and select for use, can select different states according to the demand (including service environment, use pan etc.), adjusts the distribution of outer loop including fire hole intensity and load, thereby raises the efficiency, improves the flue gas, improves the adaptability.

Description

Burner for gas stove and gas stove with same

Technical Field

The utility model relates to the technical field of household kitchen utensils, in particular to a burner for a gas stove and the gas stove with the burner.

Background

The combustor is the important part of gas-cooker, and the combustor structure of present domestic gas-cooker mostly is circular structure, and the burning is the polycyclic flame form. For example, the Chinese patent with application number 200610122586.4 discloses an upper air inlet gas cooker burner, which comprises an outer fire cover, an outer ring fire cover seat, a chassis and a burner with an injection pipe, which are arranged in sequence from top to bottom, wherein the center of the chassis is provided with an annular center fire cover seat matched with the center fire cover; also as the burner disclosed in the chinese patent with application number 201410719979.8, it includes a burner base and a distributor, a central fire cover is arranged on the distributor, an outer ring fire cover is arranged around the central fire cover, and is also arranged on the distributor, and the central fire cover and the outer ring fire cover are both communicated with the inside of the distributor. Therefore, most of burners in the prior art only have two ring structures, and the temperature between the two rings is low during cooking, so that the pot bottom is heated unevenly, and the actual cooking experience is influenced; and the structure is comparatively complicated between two rings, takes place the overflow or uses after a period when the combustor, is difficult clean in the middle of the combustor to lead to dirty piling up, influence user experience, the combustor corruption can aggravate even to the serious condition, reduces the life of combustor. In order to solve the above technical problem, the applicant provides a solution, such as chinese utility model patent 'a domestic gas cooking utensils combustor' with patent number ZL201621086002.8 (No. CN 206094081U), which provides a domestic gas cooking utensils combustor, including the base, draw the ejector tube and set up and be in the gas mixing seat and the fire lid of base top, the gas mixing seat include all with draw the inner gas mixing chamber and the outer gas mixing chamber that the ejector tube is linked together, the fire lid covers on the gas mixing seat to have inner ring fire hole and outer ring fire hole in the position that corresponds inner gas mixing chamber and outer gas mixing chamber, its characterized in that: the inner air mixing chamber is positioned in the center of the air mixing seat, the outer air mixing chamber is positioned in at least two extension arms which respectively extend outwards from the inner air mixing chamber, and meanwhile, the fire cover is in a shape matched with the extension arms. Through the gas mixing seat with the combustor with the fire lid set to the shape of outwards extending two at least extension arms by central authorities, flame has great secondary air area of contact, is favorable to reducing CO and discharges, improves the combustor thermal efficiency, though the extension arm of this combustor has extended to the part at outer loop fire lid place, still leaves the vacancy between the adjacent extension arm, this vacancy still can cause the heating that corresponds the bottom of cooking pot not in place.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the present invention is to provide a burner for a gas stove, which can improve the heating uniformity of a pot and the combustion efficiency, in view of the above-mentioned current technical situation.

A second technical problem to be solved by the present invention is to provide a burner for a gas range, which can adjust the intensity and load of a fire hole according to the cooking requirement, in view of the above-mentioned prior art.

The third technical problem to be solved by the present invention is to provide a gas stove using the burner in view of the above prior art.

The fourth technical problem to be solved by the present invention is to provide a gas stove capable of collecting heat generated during combustion and avoiding the influence of liquid overflow, in view of the above-mentioned current state of the art.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: the burner for the gas stove comprises

A base;

the inner fire cover is arranged on the base and comprises an annular peripheral wall and a cover body covering the annular peripheral wall, and at least two inner fire holes are formed in the annular peripheral wall;

the method is characterized in that: also includes:

outer fire lid also sets up on the base, outer fire lid is including at least two centers on the extension arm of interior fire lid, each extension arm is followed interior fire lid circumference interval sets up and wholly is radially, has seted up two at least first outer fire holes along its length direction on the roof of each outer fire lid, the base still is provided with the regulating part that can change first outer fire hole size.

In order to solve the second technical problem, preferably, the adjusting member includes adjusting portions capable of correspondingly covering the respective extension arms, the adjusting portions are provided with adjusting openings corresponding to the first outer fire holes, and the adjusting member is capable of rotating in the circumferential direction relative to the outer fire covers under the action of an external force, so as to change positions of the adjusting portions in the corresponding first outer fire holes, and further change the sectional areas of the effective airflow channels of the first outer fire holes. Under the condition that the regulating part slowly rotates relative to the outer fire cover, the change of the effective airflow channel sectional area of the first outer fire hole is realized through the change of the staggered area size of the regulating port and the first outer fire hole, and the rotating speed of the regulating part can be regulated according to the cooking requirement of the cookware.

In addition to the manner of changing the cross-sectional area of the effective airflow channel of the first outer fire hole, the adjusting piece also has a manner of completely shielding the first outer fire hole, and preferably, the adjusting piece also comprises shielding parts which can correspondingly cover the respective extension arms, the shielding parts are arranged adjacent to one or at least one adjusting part, and the shielding parts can shield the first outer fire hole in a state that the shielding parts cover the outer fire cover.

Preferably, the fire door further comprises a driving mechanism which can change the position of the adjusting part and the shielding part of the adjusting piece relative to the outer fire cover. Thereby can realize adjusting the effective airflow channel's of first outer fire hole the mode and shelter from the conversion between the mode of first outer fire hole.

In order to avoid that the shielding piece correspondingly shields the first outer fire hole due to the rotation of the adjusting piece, so that the outer fire cover does not have an outer fire, preferably, each extension arm of the outer fire cover is directly connected with the annular peripheral wall of the inner fire cover and comprises an outer side end far away from the inner fire cover and an inner side end and an outer side edge connecting the inner fire cover and the outer side end, and at least two second outer fire holes are formed in the inner side end and/or the outer side edge. The side of the outer fire cover can be discharged through the second outer fire holes on the inner side and/or the outer side of the outer fire cover, and the phenomenon that the outer fire cover does not exist can be avoided.

In order to promote the sufficient combustion of the first outer fire holes of the outer fire cover, it is preferable that the upper surface of the top wall of the outer fire cover has at least two concave-convex structures from the outer end to the annular peripheral wall of the inner fire cover, the convex portions of the concave-convex structures open the first outer fire holes, each of the first outer fire holes is gradually inclined outward from the inside, and the concave portions of the concave-convex structures form secondary air supply passages of the corresponding first outer fire hole. Through the setting of secondary air supplementary passageway can make secondary air supply to the root of each first outer fire hole better, promote the abundant burning in each first outer fire hole.

In order to avoid the mutual interference between the inner fire cover and the outer fire cover, the top of the annular peripheral wall of the inner fire cover is preferably higher than the top of the convex part of the concave-convex structure.

In order to change the effective airflow passage cross-sectional area of the first outer fire hole by changing the size of the staggered area of the adjusting opening and the first outer fire hole under the condition that the adjusting piece slowly rotates relative to the outer fire cover, the adjusting part is preferably in a straight-line plate shape and also has at least two concave-convex parts, and the adjusting opening is opened on the convex part.

In order to facilitate the integral rotation of the adjusting portion and the shielding portion, preferably, the adjusting member further includes an adjusting ring capable of connecting the adjusting portion and the outer end of the shielding portion.

In order to solve the third technical problem, the present invention further provides a gas stove using the burner, including a stove panel, and a base located at least partially above the stove panel, wherein the inner fire cover and the outer fire cover the base to form a gas mixing chamber together, and the gas stove is characterized in that: and a vertical injection pipe communicated with the gas mixing chamber is arranged below the cooker panel, and a nozzle is matched at the gas inlet end of the injection pipe.

In order to avoid that the gas pipe rotates along with the driving mechanism when driving the adjusting part to rotate, preferably, the injection pipe comprises a narrowing section with a downward bell mouth and a diffusion section with an upward bell mouth, the narrowing section is correspondingly arranged on the nozzle seat, the gas stove further comprises a base for supporting the nozzle and the driving mechanism, the driving mechanism and the nozzle seat are provided with hollow parts for the gas pipe to pass through, and the gas pipe passes through the base and then continues to move upwards and is communicated with the nozzle after passing through the hollow parts. The driving mechanism and the nozzle seat are provided with hollow parts for the gas pipe to pass through, so that the parts such as the gas pipe and the nozzle are avoided, the gas inlet, the injection and the like are not influenced in the rotating process, and the risks such as leakage and the like are avoided.

The driving mechanism can be selected in various manners, and from the viewpoint of simple structure, preferably, the driving mechanism comprises a power source, a power output end of the power source is connected with a transmission block in a gear meshing manner, the transmission block is further provided with a transmission sleeve positioned on the periphery of the injection pipe, and the transmission sleeve is connected with the adjusting ring, so that the transmission sleeve and the adjusting ring can be driven to rotate relative to the outer fire cover along the circumferential direction together in the state that the power source drives the transmission block to rotate. In addition, the adjusting ring is connected with the base and the lower rotary power machine through the gear, and in the combustion process, through the slow rotation of the rotary machine, flames are uniformly distributed in the circumferential direction of the cookware, so that the heating uniformity of the cookware is improved, and the combustion adaptability can be greatly improved by matching two combustion states.

In order to solve the fourth technical problem, preferably, the transmission sleeve is arranged on the periphery of the ejector pipe and comprises a contraction part parallel to the narrowing section of the ejector pipe and a diffusion part parallel to the diffusion section of the ejector pipe, the diffusion part is provided with a convex wall which continuously extends upwards and expands outwards along the circumferential direction to form an expansion cavity, and the top end of the convex wall is abutted to the bottom end of the adjusting ring through a fastening piece. This driving sleeve is except constituting the pivoted effect of drive regulating ring, it sets up with drawing penetrating the nest of tubes, the contraction portion that has equally makes the driving sleeve have like drawing the effect of penetrating with drawing penetrating the pipe, can also draw penetrating the entering and penetrate the pipe when can drawing penetrating the entering regulating ring with higher speed outside air under the driving sleeve drives the pivoted condition of regulating ring, and then play supplementary penetrating the pipe and improve the ability of penetrating primary air, in addition, outside air is because of drawing penetrating the interior of getting into the regulating ring of driving sleeve encloses, can provide the required secondary air of burning to outer fire lid better.

In order to avoid the regulation part of the regulating part from blocking the regulation port due to the overflowing liquid generated in the cooking process, preferably, the convex wall is provided with at least two inflow ports for the inflow of the external air at intervals along the circumferential direction. The air flowing in through the inlet port can supply secondary air to the outer fire cover and can assist in blowing away the overflowing liquid in the regulating part of the regulating member.

In order to realize that the adjusting ring is driven by the driving mechanism when needing to rotate and is separated from the driving mechanism in a non-rotating state, preferably, a connecting piece which can connect the narrowing section of the transmission sleeve and the transmission block is further connected between the narrowing section of the transmission sleeve and the transmission block, the connecting piece comprises a connecting upper arm which is connected with the narrowing section of the transmission sleeve and a connecting lower arm which is hinged with the connecting upper arm, the connecting lower arm is clamped at the periphery of the transmission block, and correspondingly, the transmission block is provided with a clamping groove for clamping the connecting lower arm. Only under the state that the transmission sleeve is connected with the lower arm and clamped on the clamping groove of the transmission block, the power source of the driving mechanism can drive the transmission sleeve to drive the adjusting ring to rotate.

Compared with the prior art, the utility model has the advantages that; have at least two extension arms around interior fire lid through setting up outer fire lid on the base, each extension arm is along interior fire lid circumference interval setting and wholly be radially, can compensate the interval between the outer fire lid uniformly like this, heat the bottom of a boiler more uniformly, in addition, at least two first outer fire holes have been seted up along its length direction on the roof of each outer fire lid, the base still is provided with the regulating part that can change first outer fire hole size, through the regulation of regulating part, make outer fire lid have at least two kinds of states to choose for use, can be according to the demand (including service environment, use pan etc.) the different states of selection, adjust the distribution of outer loop including fire hole intensity and load, thereby raise the efficiency, improve the flue gas, and the adaptability is improved.

Drawings

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

FIG. 2 is a cross-sectional view at an angle of FIG. 1 (the first outer fire hole is shielded by the shielding portion of the adjusting member in a state of being covered on the outer fire cover);

FIG. 3 is a cross-sectional view of another angle in FIG. 1 (the first outer fire hole is exposed in a state where the shielding portion of the adjusting member is not covered on the outer fire cover);

FIG. 4 is a schematic view of a burner according to an embodiment of the present invention;

FIG. 5 is a schematic view showing a structure of a burner bottom portion according to an embodiment of the present invention;

FIG. 6 is an exploded view of FIG. 4;

FIG. 7 is a schematic view of the structure of an adjusting member according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a driving sleeve according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of an outer fire cover in an embodiment of the present invention;

FIG. 10 is a schematic view of a power source of the driving mechanism according to the embodiment of the present invention.

Detailed Description

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

As shown in FIGS. 1 to 10, the preferred embodiment of the present invention is shown. This a combustor for gas-cooker in this embodiment is including base 1, the interior fire lid 2 of setting on base 1, this interior fire lid 2 is including annular perisporium 21 and the lid 22 that covers on it, at least two interior fire holes 221 have been seted up on the annular perisporium 21, still including the outer fire lid 3 that also sets up on base 1, this outer fire lid 3 is including at least two extension arms 31 around interior fire lid 2, each extension arm 31 sets up and wholly is radially along interior fire lid 2 circumference interval, at least two first outer fire holes 32 have been seted up along its length direction on the roof of each outer fire lid 3, base 1 still is provided with can change the regulating part 4 of first outer fire hole 32 size. The adjusting part 4 comprises an adjusting part 41 which can correspondingly cover the extending arm 31, the adjusting part 41 is provided with an adjusting opening 411 which corresponds to each first outer fire hole 32, the adjusting part 4 can rotate in the circumferential direction relative to each outer fire cover 3 under the action of external force, and therefore the position of the adjusting part 41 in the corresponding first outer fire hole 32 is changed, and the sectional area of an effective airflow channel of the first outer fire hole 32 is further changed. Under the condition that the adjusting piece 4 slowly rotates relative to the outer fire cover 3, the effective airflow channel sectional area of the first outer fire hole 32 is changed by changing the size of the staggered area of the adjusting opening 411 and the first outer fire hole 32, and the rotating speed of the adjusting piece 4 can be adjusted according to the cooking requirement of the cookware. Besides the way of changing the cross-sectional area of the effective airflow channel of the first outer fire hole 32, the way of completely shielding the first outer fire hole 32 is provided, the adjusting piece 4 further comprises shielding parts 42 which can correspondingly cover the respective extension arms 31, the shielding parts 42 are arranged adjacent to one or at least one adjusting part 41, and the first outer fire hole 32 can be shielded in the state that the shielding parts 42 cover the outer fire cover 3. In the embodiment, the adjusting piece 4 is arranged corresponding to the shielding part 42 in a one-to-one manner, and in order to switch between the manner of adjusting the effective airflow channel of the first outer fire hole 32 and the manner of shielding the first outer fire hole 32, the adjusting piece further comprises a driving mechanism capable of changing the positions of the adjusting part 41 and the shielding part 42 of the adjusting piece 4 relative to the outer fire cover 3. In addition, in order to avoid the shielding member correspondingly shielding the first outer fire hole 32 due to the rotation of the adjusting member 4, so that the outer fire cover 3 does not have an outer fire, preferably, the extension arm 31 of each outer fire cover 3 is directly connected with the annular peripheral wall 21 of the inner fire cover 2, and comprises an outer side end 33 far away from the inner fire cover 2, an inner side end 34 connecting the inner fire cover 2 and the outer side end 33, and an outer side edge 35, wherein the inner side end 34 and/or the outer side edge 35 is provided with at least two second outer fire holes 36. The side fire of the outer fire cover 3 can be discharged through the second outer fire holes 36 on the inner side 34 and/or the outer side 35 of the outer fire cover 3, and the phenomenon that no outer fire exists can be avoided. In order to promote the sufficient combustion of the first outer fire holes 32 of the outer fire cover 3, the upper surface of the top wall of the outer fire cover 3 from the outer end 33 to the annular peripheral wall 21 of the inner fire cover 2 has at least two concave-convex structures 30, the convex portions of the concave-convex structures 30 are provided with first outer fire holes 32, each first outer fire hole 32 is gradually inclined outwards from the inside to the outside, and the concave portions of the concave-convex structures 30 form secondary air replenishing channels 301 of the corresponding first outer fire holes 32. The secondary air can be better supplemented to the root of each first outer fire hole 32 through the arrangement of the secondary air supplementing channel 301, and the sufficient combustion of each first outer fire hole 32 is promoted. In order to avoid the interference between the inner fire cover 2 and the outer fire cover 3, the top of the annular peripheral wall 21 of the inner fire cover 2 is higher than the top of the convex part of the concave-convex structure 30. In order to realize that the adjusting part 41 realizes the change of the effective airflow channel cross-sectional area of the first outer fire hole 32 through the change of the size of the staggered area of the adjusting opening 411 and the first outer fire hole 32 under the condition that the adjusting piece 4 slowly rotates relative to the outer fire cover 3, the adjusting part 41 is in a straight plate shape, and the adjusting part 41 also has at least two concave-convex parts, and the adjusting opening 411 is opened on the convex part. In order to facilitate the rotation of the adjusting portion 41 and the shielding portion 42 integrally, the adjusting member 4 further includes an adjusting ring 5 capable of connecting the adjusting portion 41 and the outer end 33 of the shielding portion 42.

Referring to fig. 2 and 3, the embodiment further provides a gas stove using the burner, including a stove panel 6, and a base 1 at least partially located on the stove panel 6, wherein the inner fire cover 2 and the outer fire cover 3 cover the base 1 to form a gas mixing chamber 7 together, a vertical injection pipe 8 communicated with the gas mixing chamber 7 is disposed below the stove panel 6, and a nozzle 9 is adapted to a gas inlet end 80 of the injection pipe 8. In order to avoid that the gas pipe also rotates along with the rotation when the driving mechanism drives the adjusting part 4 to rotate, the injection pipe 8 comprises a narrow section 81 with a downward bell mouth and a diffusion section 82 with an upward bell mouth, the narrow section 81 corresponds to the nozzle 9 arranged on the nozzle seat 10, the gas stove further comprises a base 20 used for supporting the nozzle 9 and the driving mechanism, hollow parts for the gas pipe to pass through are arranged on the driving mechanism and the nozzle seat 10, the gas pipe continuously ascends after passing through the base 20 and is communicated with the nozzle 9 after passing through the hollow parts, the hollow parts for the gas pipe to pass through are arranged on the driving mechanism and the nozzle seat 10, the gas pipe, the nozzle 9 and other parts are avoided, the air inlet and the injection are not influenced in the rotating process, and the risks such as leakage are avoided. The selection of actuating mechanism can have the multiple, consider from simple structure's angle, actuating mechanism is including power supply 300, the power take off end of power supply 300 is connected with transmission block 40 through gear engagement's mode, still be provided with on the transmission block 40 and be located and draw and penetrate pipe 8 outlying transmission cover 50, transmission cover 50 links to each other with regulation circle 5, thereby realize under power supply 300 drive transmission block 40 pivoted state, can drive transmission cover 50 and regulation circle 5 together along circumferential direction relatively outer fire lid 3. In addition, the adjusting ring 5 is connected with the base 1 and the lower rotary power machine through gears, and in the combustion process, through the slow rotation of the rotary machines, flames are uniformly distributed in the circumferential direction of the cookware, so that the heating uniformity of the cookware is improved, and the combustion adaptability can be greatly improved by matching two combustion states. The transmission sleeve 50 is arranged on the periphery of the injection pipe 8 and comprises a contraction part 501 parallel to the narrowing section 81 of the injection pipe 8 and a diffusion part 502 parallel to the diffusion section 82 of the injection pipe 8, the diffusion part 502 is provided with a convex wall 503 which extends upwards continuously and expands outwards along the circumferential direction to form an expansion cavity, and the top end of the convex wall 503 is abutted to the bottom end of the adjusting ring 5 through a fastener. This driving sleeve 50 except constituting the effect that drives the regulation circle 5 pivoted, it with draw and penetrate 8 nested settings of pipe, the contraction portion 501 and the diffuser portion 502 that have equally make driving sleeve 50 have draw the effect of penetrating like drawing and penetrate pipe 8, can also draw and penetrate pipe 8 when can accelerating outside air to draw and penetrate and get into regulation circle 5 under the circumstances that driving sleeve 50 drove the rotation of regulation circle 5, and then play supplementary drawing pipe 8 and improve the ability of drawing and penetrate primary air, in addition, outside air gets into the inner wall of regulation circle 5 because of drawing of driving sleeve 50, can provide the required secondary air of burning to outer fire lid 3 better. In order to prevent the regulation part 41 of the regulation member 4 from blocking the regulation port 411 by the overflowing liquid generated during the cooking process, the convex wall 503 is provided with at least two inflow ports 5031 at intervals along the circumferential direction, and the air flowing in through the inflow ports 5031 can provide the secondary air to the outer fire cover 3 and can assist in blowing away the overflowing liquid in the regulation part 41 of the regulation member 4.

Finally, in order to realize that the adjusting ring 5 is driven by the driving mechanism only when needing to rotate and is separated from the driving mechanism in a non-rotating state, a connecting piece 60 capable of connecting the narrowing section 81 of the transmission sleeve 50 and the transmission block 40 is also connected between the narrowing section 81 of the transmission sleeve 50 and the transmission block 40, the connecting piece 60 comprises a connecting upper arm 601 connected with the narrowing section 81 of the transmission sleeve 50 and a connecting lower arm 602 hinged with the connecting upper arm 601, the connecting lower arm 602 is clamped on the periphery of the transmission block 40, correspondingly, the transmission block 40 is provided with a clamping groove 401 for clamping the connecting lower arm 602, as shown in figure 5, only in the state that the transmission sleeve 50 is clamped on the clamping groove 401 of the transmission block 40 through the connecting lower arm 602, a power source 300 of the driving mechanism can drive the transmission sleeve 50 to drive the adjusting ring 5 to rotate, the outer fire cover 3 arranged on the base 1 is provided with at least two extending arms 31 surrounding the inner fire cover 2, each extending arm 31 is arranged at intervals along the circumference of the inner fire cover 2 and is in a whole radial shape, can compensate the interval between the outer fire lid 3 like this evenly, heat the bottom of a boiler more evenly, in addition, at least two first outer fire holes 32 have been seted up along its length direction on the roof of each outer fire lid 3, base 1 still is provided with the regulating part 4 that can change first outer fire hole 32 size, through the regulation of regulating part 4, make outer fire lid 3 have at least two kinds of states to choose for use, can select different states according to the demand (including service environment, use pan etc.), adjust the distribution of outer loop including fire hole intensity and load, thereby raise the efficiency, improve the flue gas, improve the adaptability.

To sum up above-mentioned, this gas-cooker's outer fire lid 3 has two kinds of states and can choose for use, two states that have shielding part 42 and no shielding part 42 on outer fire lid 3 promptly, the distribution of outer loop including adjustable fire hole intensity and load like this, thereby raise the efficiency, improve the flue gas, improve the adaptability, in addition, fire lid and gas mixing chamber 7 are the cross form, the concave-convex structure 30 of shielding part 42 can provide sufficient secondary air for all fire holes on outer fire lid 3, in the combustion process, through actuating mechanism's slow rotation, make flame at pan circumference evenly distributed, improve the homogeneity of being heated of pan.

Claims (15)

1. A burner for gas stove comprises

A base (1);

the inner fire cover (2) is arranged on the base (1) and comprises an annular peripheral wall (21) and a cover body (22) covering the annular peripheral wall, and at least two inner fire holes (221) are formed in the annular peripheral wall (21);

the method is characterized in that: also includes:

outer fire lid (3), also set up on base (1), outer fire lid (3) are including at least two centers on extension arm (31) of interior fire lid (2), and each extension arm (31) is followed interior fire lid (2) circumference interval sets up and wholly is radially, has seted up two at least first outer fire holes (32) along its length direction on the roof of each outer fire lid (3), base (1) still is provided with regulating part (4) that can change first outer fire hole (32) size.

2. Burner for gas cooktops according to claim 1, characterized in that: the adjusting part (4) comprises adjusting parts (41) which can correspondingly cover the extension arms (31) respectively, adjusting openings (411) corresponding to the first outer fire holes (32) are formed in the adjusting parts (41), and the adjusting part (4) can rotate in the circumferential direction relative to the outer fire covers (3) under the action of external force, so that the positions of the adjusting parts (41) in the corresponding first outer fire holes (32) are changed, and the sectional area of an effective airflow channel of the first outer fire holes (32) is further changed.

3. Burner for gas cooktops according to claim 2, characterized in that: the adjusting piece (4) further comprises shielding parts (42) capable of correspondingly covering the extension arms (31), the shielding parts (42) are arranged adjacent to one or at least one adjusting part (41), and the first outer fire hole (32) can be shielded in a state that the shielding parts (42) cover the outer fire cover (3).

4. Burner for gas cooktops according to claim 3, characterized in that: the fire door also comprises a driving mechanism which can change the positions of the adjusting part (41) and the shielding part (42) of the adjusting piece (4) relative to the outer fire cover (3).

5. Burner for gas cooktops according to claim 4, characterized in that: each extension arm (31) of the outer fire cover (3) is directly connected with the annular peripheral wall (21) of the inner fire cover (2) and comprises an outer side end (33) far away from the inner fire cover (2) and an inner side edge (34) and an outer side edge (35) which are used for connecting the inner fire cover (2) and the outer side end (33), and at least two second outer fire holes (36) are formed in the inner side edge (34) and/or the outer side edge (35).

6. Burner for gas cooktops according to claim 5, characterized in that: the upper surface of the top wall of the outer fire cover (3) is provided with at least two concave-convex structures (30) from the outer side end (33) to the annular peripheral wall (21) of the inner fire cover (2), the convex part of each concave-convex structure (30) is provided with the first outer fire hole (32), each first outer fire hole (32) is gradually inclined outwards from inside to outside, and the concave lower part of each concave-convex structure (30) forms a secondary air supplement channel (301) of the corresponding first outer fire hole (32).

7. Burner for gas cooktops according to claim 6, characterized in that: the top of the annular peripheral wall (21) of the inner fire cover (2) is higher than the top of the convex part of the concave-convex structure (30).

8. Burner for gas cooktops according to claim 7, characterized in that: the adjusting part (41) is in a shape of a straight plate, the adjusting part (41) also comprises at least two concave-convex parts, and the adjusting opening (411) is formed on the convex part.

9. Burner for gas cooktops, according to claim 8, characterized in that: the adjusting piece (4) also comprises an adjusting ring (5) which can connect the adjusting part (41) with the outer end (33) of the shielding part (42).

10. A gas cooker using the burner as claimed in any one of claims 1 to 9, comprising a cooktop panel (6), and a base (1) at least partially located on the cooktop panel (6), wherein the inner flame cover (2) and the outer flame cover (3) cover the base (1) to jointly form a gas mixing chamber (7), characterized in that: a vertical injection pipe (8) communicated with the gas mixing chamber (7) is arranged below the cooker panel (6), and a nozzle (9) is matched with a gas inlet end (80) of the injection pipe (8).

11. The gas range of claim 10, wherein: the gas stove comprises a gas pipe, a gas pipe and a gas injection pipe (8), wherein the gas pipe comprises a narrow section (81) with a downward bell mouth and a diffusion section (82) with an upward bell mouth, the narrow section (81) is correspondingly arranged on a nozzle seat (10) of the gas stove, the nozzle (9) and a base (20) of a driving mechanism are supported by the gas stove, a hollow part for the gas pipe to pass through is formed in the driving mechanism and the nozzle seat (10), and the gas pipe passes through the base (20) and then continues to move upwards and is communicated with the nozzle (9) after passing through the hollow part.

12. The gas range of claim 11, wherein: the driving mechanism comprises a power source (300), a power output end of the power source (300) is connected with a transmission block (40) in a gear meshing mode, a transmission sleeve (50) located on the periphery of the injection pipe (8) is further arranged on the transmission block (40), and the transmission sleeve (50) is connected with an adjusting ring (5), so that the transmission sleeve (50) and the adjusting ring (5) can be driven to rotate relative to the outer fire cover (3) along the circumferential direction under the condition that the power source (300) drives the transmission block (40) to rotate.

13. The gas range of claim 12, wherein: the transmission sleeve (50) is arranged on the periphery of the injection pipe (8) and comprises a contraction part (501) parallel to the narrowing section (81) of the injection pipe (8) and a diffusion part (502) parallel to the diffusion section (82) of the injection pipe (8), the diffusion part (502) is provided with a convex wall (503) which continuously extends upwards and expands outwards along the circumferential direction to form an expansion cavity, and the top end of the convex wall (503) is abutted to the bottom end of the adjusting ring (5) through a fastening piece.

14. The gas range of claim 13, wherein: the convex wall (503) is provided with at least two inflow ports (5031) for the inflow of the external air at intervals along the circumferential direction.

15. The gas range of claim 14, wherein: the narrow section (81) of receipts of driving sleeve (50) with still be connected with between driving block (40) and can be with connecting piece (60) that the two is connected, connecting piece (60) are including connecting the connection upper arm (601) of the narrow section (81) of receipts of driving sleeve (50) and with this be connected upper arm (601) articulated be connected down arm (602), connect down arm (602) joint and be in the periphery of driving block (40), correspondingly, driving block (40) have the confession connect draw-in groove (401) of arm (602) joint down.

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