CN111256128A - Burner for gas stove - Google Patents

Abstract

The invention relates to a burner for a gas stove, which is characterized in that: the air-replenishing device comprises a base, wherein the base is provided with an inner wall and an outer wall which are arranged at intervals, the inner wall encloses a central cavity for air replenishing, and the inner wall and the outer wall enclose a peripheral cavity together; the connector comprises a first gas channel and a second gas channel which are communicated with the peripheral cavity, the first gas channel and the second gas channel are oppositely arranged with a gap, and the gap forms a supplementary channel communicated with the central cavity; compared with the prior art, the invention has the advantages that the guide piece in the air replenishing channel can be opened or closed, thereby solving the phenomenon of unreasonable distribution of secondary air of the inner ring and the outer ring, and on one hand, the guide piece can avoid the mutual influence of the secondary air between the inner ring and the outer ring.

Description

Burner for gas stove

Technical Field

The invention relates to a burner, in particular to a burner for a gas stove.

Background

At present, a fire cover of a gas stove generally comprises an inner ring fire cover and an outer ring fire cover, the heating mode of the fire cover to a pot body is basically a mode of combining an external annular flame and an internal annular flame, the external annular flame is far away from the center of the pot bottom relative to the internal annular flame, the external annular flame is sprayed outwards and cannot intensively heat the bottom of the pot, and the retention time of smoke formed by combustion at the pot bottom is insufficient, so that the efficiency is low and resources are wasted, in order to solve the problems, a Chinese invention patent with a patent application number of CN201310295581.1 (with an authorization publication number of CN103438453A) provides an internal injection type burner for a gas stove, which comprises a base, an injection pipe, a connecting ring, a burner head and a smoke cover, wherein the injection pipe is fixedly connected with the base, the connecting ring, the burner head and the smoke cover are arranged on the base from bottom to top, the inner wall of the burner head is provided with a plurality of fire holes uniformly distributed along the, the flame of this fire hole sprays inwards, can make the flame centralized heating bottom of a boiler, and the increasing of heat efficiency, but the required secondary air of the fire hole burning of the furnace end inner wall of this kind of combustor often is not enough, and the fixed structure of current gas mixing chamber integral type is unfavorable for the cleanness of cooking utensils, especially inside and the waist shape hole in the gas mixing chamber, and the user is also more and more to the difficult clear complaint of gas mixing chamber, still easily appears heating the inhomogeneous phenomenon in bottom of a boiler.

On the other hand, the combination of the outer annular flame and the inner annular flame is adopted, for example, the combination of the outer annular flame and the inner annular flame in the Chinese utility model patent ZL201320675581.X (with the publication number of CN203608555U), which discloses an outer fire cover and a gas burner of a gas burner, comprises a top annular cover plate, an inner annular wall plate and an outer annular wall plate, wherein the top annular cover plate is provided with a plurality of lower-opening convex cavities which are protruded from the lower surface to the upper surface, the convex cavities are circularly and uniformly distributed, a gap is arranged between two adjacent convex cavities, the side surface of the convex cavity, which is positioned at the radial inner side direction of the top annular cover plate, is an involute curved surface, a lower combustion fire hole group is arranged on the inner annular wall plate between two adjacent protrusions, and an upper combustion hole group is arranged on the involute curved surface, although the structure is adopted, secondary air can be introduced from the shaft guide, and secondary air is introduced from the horizontal direction between two adjacent convex cavities, the secondary air is sufficient, the gas combustion is sufficient, and due to the injection effect of combustion hot air flow, the secondary air is sucked by the outer fire cover in a rolling mode in the horizontal direction between the two adjacent convex cavities, so that the secondary air is reasonably distributed, and meanwhile, the inner ring and the outer ring are sufficiently combusted, and further improvement is needed.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a burner for a gas stove, which ensures reasonable distribution of secondary air required by an inner ring and an outer ring, in view of the above-mentioned prior art.

The second technical problem to be solved by the present invention is to provide a burner for a gas range, which can provide a reasonable distribution of secondary air to the inner and outer rings, in view of the above-mentioned prior art.

The third technical problem to be solved by the present invention is to provide a burner for a gas stove, which ensures smooth fire transfer to improve the success rate of fire transfer, and is particularly suitable for lateral fire transfer, in view of the current state of the art.

The fourth technical problem to be solved by the present invention is to provide a burner for a gas stove, which can provide sufficient secondary air supplement to a side fire transfer part, in view of the above-mentioned prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this a combustor for gas-cooker, its characterized in that: comprises the following steps:

the base is provided with an inner wall and an outer wall which are arranged at intervals, the inner wall is encircled to form a central cavity for air supplement, and the inner wall and the outer wall are encircled to form a peripheral cavity;

the connecting body comprises a plate body, wherein a central hole aligned with the central cavity is formed in the central position of the plate body, the peripheral edge of the plate body extends in the horizontal direction and can cover the outer wall, the peripheral edge is provided with a first gas channel and a second gas channel which are vertical and communicated with the peripheral cavity, the first gas channel and the second gas channel are oppositely arranged and are provided with intervals, and the intervals form a supplementary channel communicated with the central cavity; and

the guide piece is arranged on the periphery of the central hole of the plate body in a rotating mode and can open or close the air replenishing channel.

Preferably, the guide member is rotatably disposed at a periphery of the central hole and is capable of changing a size of an air inlet of the air supplement passage.

Wherein the guide piece enters the opening in a rotatable manner or in a slidable manner, the rotatable manner is a technical scheme, and the condition is as follows: the guide member includes at least one blocking piece rotatably disposed at a periphery of the central hole in an opening and closing manner. This is similar to the rotational opening and closing of the shutter of a camera.

The air inlet is closed or the air inlet opening of the air inlet is adjusted through the fact that each blocking piece enters the air inlet of the air supplementing channel, at least one outward protruding pivot is arranged at the periphery of the central hole at intervals in the circumferential direction, and the root portion of each blocking piece is pivoted on the corresponding pivot so as to enable each blocking piece to enter the air inlet of the air supplementing channel.

In order to achieve the uniformity of the burner heating pan bottom, preferably, the first gas channel comprises a first inner annular wall and a first outer annular wall which are arranged at intervals inside and outside and are in a C shape, the corresponding end parts of the first inner annular wall and the first outer annular wall are respectively connected through a first side wall and a second side wall, the first gas channel further comprises a first fire cover covering the first gas channel, and a first gas mixing chamber is formed between the first fire cover and the connecting body.

Of course, in order to facilitate the user to control the central fire and the peripheral fire, the inner ring and the outer ring can be respectively provided with independent gas channels.

In order to better realize the fire transfer from the first fire cover to the second fire cover, the first fire cover comprises a first annular top wall, a first inner ring wall and a first outer ring wall which vertically extend downwards from the inner edge and the outer edge of the first annular top wall and are abutted against the first inner ring wall and the first outer ring wall, the first side wall and/or the second side wall is provided with a first ignition groove communicated with the first gas mixing chamber, the first inner ring wall is provided with a first inner fire hole communicated with the first gas mixing chamber, the first outer ring wall is provided with a first outer fire hole communicated with the first gas mixing chamber, the first inner side opening of the first ignition slot extends to one of the first inner fire holes which is closest to the first side wall or the second side wall, the first outer side opening of the first ignition slot is adjacent to one of the first outer fire holes that is closest to the first side wall or the second side wall. It is of course possible for the second fire cover to transmit the fire to the first fire cover, mainly depending on which fire cover the ignition needle is located.

In order to make it possible for the guide element to also be supplied with secondary air to the first lateral pilot burner, the guide element comprises a first stop, by means of which the secondary air in the central chamber can be guided into the first pilot burner. So as to avoid the defects that the fire transfer at the lateral fire transfer position in the prior art is easy to supplement and supply the deficiency of secondary air and is easy to cause fire transfer blocking.

With the C type design of first gas passageway, second gas passageway includes the second inner ring wall and the outer rampart of second of the C shape that inside and outside interval set up, and the both corresponding tip do not is connected through third lateral wall and fourth lateral wall, still including the cover the second fire lid on the second gas passageway, the second fire lid including and with be formed with the second gas mixing chamber between the connector, set up on the second inner ring wall and communicate the second hole of angering in the second gas mixing chamber, set up on the second outer rampart and communicate the second hole of angering in the second gas mixing chamber.

Further, the second fire cover comprises a second annular top wall, a second inner ring wall and a second outer ring wall, the second inner ring wall and the second outer ring wall vertically extend downwards from the inner edge and the outer edge of the second annular top wall and abut against the second inner ring wall and the second outer ring wall, the third side wall and/or the fourth side wall is/are provided with a second ignition groove communicated with the second gas mixing chamber, a second inner fire hole communicated with the second gas mixing chamber is formed in the second inner ring wall, a second outer fire hole communicated with the second gas mixing chamber is formed in the second outer ring wall, a second inner side opening of the second ignition groove is adjacent to one of the second inner fire hole, which is closest to the third side wall or the fourth side wall, and a second outer side opening of the second ignition groove is adjacent to one of the second outer fire hole, which is closest to the third side wall or the fourth side wall.

Preferably, the second ignition groove is disposed lower than the first ignition groove. First ignition groove and the crisscross setting of second ignition groove height can effectual reduction first ignition groove and the stifled probability of second ignition groove, and first ignition groove and second ignition groove form rotatoryly in the air current of upper/lower direction, and the outside secondary air of first fire lid and second fire lid and the secondary air at center can be here by the entrainment, effectively improves here secondary air's supply.

In order to make it possible for the guide element to also be supplied with secondary air to a second lateral ignition slot, the guide element also comprises a second stop, by means of which the secondary air in the central chamber can be guided into the second ignition slot. So as to avoid the defects that the fire transfer at the lateral fire transfer position in the prior art is easy to supplement and supply the deficiency of secondary air and is easy to cause fire transfer blocking.

In order to ensure reasonable distribution of secondary air required by the inner ring and the outer ring, a separator is arranged in the central cavity, and the separator can separate the central cavity into two relatively independent spaces which are respectively communicated with the air supplementing channel and the inner wall areas of the first air mixing chamber and the second air mixing chamber.

Preferably, the tonifying qi passageway is including lieing in first tonifying qi passageway and the second tonifying qi passageway of central cavity both sides, the separator is the T type, has the horizontal part and the vertical portion that communicate each other, the both ends of horizontal part are at least partially followed the length direction of first tonifying qi passageway and second tonifying qi passageway arranges, vertical portion is located the central authorities of central cavity, and with leave first clearance between the inner wall of central cavity, first clearance intercommunication the inner wall region of first gas mixing chamber and second gas mixing chamber.

Further, the horizontal part is including horizontal baffle, horizontal baffle's outside end stretches into first tonifying qi passageway with second tonifying qi passageway turns over upwards, horizontal baffle's upper surface is located under first ignition groove and the second ignition groove, horizontal baffle's lower surface with first tonifying qi passageway with all there is the second clearance between the diapire of second tonifying qi passageway, the second clearance intercommunication first clearance forms mutually independent be used for to the air supply passageway of the outer fire hole tonifying qi of first outer fire hole and second.

Furthermore, the horizontal clapboard extends into a first outer side end of the first air supply channel and is provided with a first through hole communicated with the second gap. The first air supply channel and the second air supply channel form two independent air supply channels through the separation effect of the horizontal partition plate, the phenomenon that secondary air in an inner wall area is remained excessively is effectively avoided, the phenomenon that secondary air in an outer wall area is insufficient is unreasonably distributed, the secondary air is forcibly divided through the partition plate, so that the inner wall area and the outer wall area of the burner fire cover can be fully combusted, and the secondary air required by fire transfer of a first fire transfer groove and a second fire transfer groove for transferring fire is sufficient, the burner fire cover is particularly suitable for a fire cover with inner and outer two-ring fire, the partition plate can avoid the mutual influence of the secondary air between the inner wall fire outlet area and the outer wall fire outlet area on one hand, the gas combustion efficiency is improved, meanwhile, the partition plate can recycle the heat of the gas mixing chamber, the secondary air can be preheated, the heat efficiency of the burner is improved, and the arrangement of the first through hole can increase the turbulence of the air, the success rate of fire transfer of the first fire transfer groove and the second fire transfer groove can be further increased.

Similarly, a second through hole communicated with the second gap is formed in the second outer side end, extending into the second air supply channel, of the horizontal partition plate.

In order to supplement the secondary air in the inner wall areas of the first air mixing chamber and the second air mixing chamber more directly, the horizontal part also comprises a cover plate which is covered on the horizontal partition plate and is in an inverted U shape, and two ends of the cover plate are adjacent to the inner wall areas of the first air mixing chamber and the second air mixing chamber.

Preferably, the two vertical arms of the cover plate are provided with at least two third through holes communicated with the vertical parts along the horizontal direction. The secondary air that flows out through the third through-hole of two vertical arms of apron is direct to the regional supplementary secondary air of inner wall in first air-mixing chamber and second air-mixing chamber, and is more direct, faster.

Because the two ends of the cover plate are adjacent to the inner wall areas of the first air mixing chamber and the second air mixing chamber, the supplementary secondary air is weaker than the central areas of the first air mixing chamber and the second air mixing chamber, and in order to strengthen the supplementary force of the secondary air, the central part of the cover plate is provided with an expansion part which extends towards the inner wall areas of the first air mixing chamber and the second air mixing chamber and is basically circular. The expanded portion is closer to the central area of the inner wall areas of the first and second gas-mixing chambers.

Compared with the prior art, the secondary air supply device has the advantages that the guide piece in the air supply channel can be opened or closed, so that the phenomenon of unreasonable distribution of the secondary air of the inner ring and the outer ring is solved, on one hand, the secondary air between the inner ring and the outer ring can be prevented from being influenced by each other through the arrangement of the guide piece, on the other hand, the secondary air can be effectively supplemented to two rings of the inner ring and the outer ring of the fire cover, the combustion efficiency of gas is improved, meanwhile, the guide piece can recycle the heat of the combustor, the secondary air can be preheated, and the heat efficiency of the combustor is improved.

Drawings

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

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

FIG. 3 is a schematic view of another angle of FIG. 1;

FIG. 4 is a schematic structural view of the first shutter and the second shutter of FIG. 1 in a state of closing the air replenishing passage;

FIG. 5 is a schematic structural view of the first shutter and the second shutter of FIG. 1 in a state of opening the gas replenishing passage;

FIG. 6 is a schematic structural diagram of a first fire cover in an embodiment of the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6 at another angle;

FIG. 8 is a schematic structural view of a partitioning member in an embodiment of the present invention;

FIG. 9 is a cross-sectional view of FIG. 8;

FIG. 10 is a schematic structural diagram of a base in an embodiment of the invention;

FIG. 11 is a cross-sectional view of both a base and a connector disposed on the base in an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a connector according to an embodiment of the present invention;

FIG. 13 is a cross-sectional view at an angle from FIG. 2 in accordance with an embodiment of the present invention;

fig. 14 is a cross-sectional view from another angle of fig. 2 in 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 FIGS. 1 to 14, the preferred embodiment of the present invention is shown. The burner for the gas stove of the embodiment comprises a base 1, wherein the base 1 is provided with an inner wall 11 and an outer wall 12 which are arranged at intervals, the inner wall 11 is enclosed to form a central cavity 111 for supplying gas, and the inner wall 11 and the outer wall 12 are enclosed to form a peripheral cavity 121; the connecting body 2 comprises a plate body, the central position of the plate body is provided with a central hole 21 aligned with the central cavity 111, the peripheral edge of the plate body extends in the horizontal direction and can cover the outer wall 12, the peripheral edge is provided with a first gas channel 22 and a second gas channel 23 which are vertical and communicated with the peripheral cavity 121, the first gas channel 22 and the second gas channel 23 are oppositely arranged and are provided with intervals, and the intervals form a supplementary channel communicated with the central cavity 111; and set up the guide 3 in the plate body on the periphery of the central hole 21 in a form of rotating, the guide 3 can open or close the air supply channel, the guide 3 in the air supply channel can open or close, thus solve the phenomenon that the secondary air of the inner and outer rings is unreasonable to distribute, can avoid the secondary air between outer ring and the inner ring to influence each other on the one hand through the setting of the guide 3, on the other hand can also carry on the complementary entry of the secondary air to the two rings fire efficiency of inner ring and outer ring of fire cover effectively, raise the combustion efficiency of the fuel gas, the heat of the burner can be recycled to the guide 3 at the same time, can preheat the secondary air, help to improve the burner thermal efficiency. In addition to the above-mentioned function of opening or closing the air supply passage, the guide member 3 is rotatably disposed around the central hole 21, and the size of the air inlet of the air supply passage can be changed. Wherein the guide 3 enters the opening in a rotatable manner or in a slidable manner, the case that the rotatable manner is a technical solution is that: the guide 3 comprises at least one flap arranged in a rotationally openable manner at the periphery of the central aperture 21, in a manner similar to the rotational opening and closing of the shutter of a camera. The air inlet is closed or the air inlet opening of the air inlet is adjusted by the blocking pieces entering the air inlet of the air supplementing channel, at least one outward protruding pivot 211 is arranged at intervals on the periphery of the central hole 21 in the circumferential direction, and the root of each blocking piece is pivoted on the corresponding pivot 211 to realize that each blocking piece enters the air inlet of the air supplementing channel, so that the size of the air inlet of the air supplementing channel is changed.

In order to achieve the uniformity of the burner heating pan bottom, preferably, the first gas channel 22 comprises a C-shaped first inner annular wall 221 and a first outer annular wall 222 which are arranged at intervals inside and outside, the corresponding end parts of the two are respectively connected through a first side wall 223 and a second side wall 224, and further comprises a first fire cover 4 which covers the first gas channel 22, and the first fire cover 4 comprises and forms a first gas mixing chamber 41 with the connecting body 2. Of course, in order to facilitate the user to control the central fire and the peripheral fire, the inner ring and the outer ring can be respectively provided with independent gas channels. In addition, in order to better realize the fire transfer from the first fire cover 4 to the second fire cover 6, the first fire cover 4 includes a first annular top wall 40, a first inner ring wall 401 and a first outer ring wall 402 extending vertically downward from the inner and outer edges of the first annular top wall 40 and abutting against the first inner ring wall 221 and the first outer ring wall 222, the first side wall 223 and/or the second side wall 224 has a first ignition slot 5 communicating with the first air mixing chamber 41, in order to ensure the stability of the fire transfer, the first side wall 223 and the second side wall 224 both have a first ignition slot 5 communicating with the first air mixing chamber 41, the first inner ring wall 401 is opened with a first inner fire hole 4011 communicating with the first air mixing chamber 41, the first outer ring wall 402 is opened with a first outer fire hole 4021 communicating with the first air mixing chamber 41, wherein a first inner side opening 51 of the first ignition slot 5 extends to one 223 or second side wall 224 closest to the first inner fire hole 2211, the first outer opening 52 of the first ignition slot 5 is adjacent to one of the first outer fire holes 4021 closest to the first side wall 223 or the second side wall 224, and may of course be the one where the second fire cover 6 transmits fire to the first fire cover 4, mainly depending on which fire cover the ignition needle is located.

The invention is also characterized in that the guide piece 3 can realize the feasibility of supplementing secondary air to the first ignition slot 5 in the lateral direction, the guide piece 3 comprises a first baffle 31, and the secondary air in the central cavity 111 can be guided and introduced into the first ignition slot 5 by virtue of the first baffle 31, so as to avoid the defects that the fire transfer at the lateral fire transfer position in the prior art is easy to supplement and supply the secondary air and the fire transfer is easy to block. With the C-shaped design of the first gas channel 22, the second gas channel 23 includes a C-shaped second inner annular wall 231 and a C-shaped second outer annular wall 232 which are arranged at an inner and outer interval, the corresponding end portions of the two are respectively connected through a third side wall 233 and a fourth side wall 234, and further includes a second fire cover 6 covering the second gas channel 23, the second fire cover 6 includes and is formed with a second gas mixing chamber 61 between the second fire cover and the connecting body 2, a second inner fire hole 2311 communicated with the second gas mixing chamber 61 is formed on the second inner annular wall 231, and a second outer fire hole 2321 communicated with the second gas mixing chamber 61 is formed on the second outer annular wall 232. The second fire cover 6 comprises a second annular top wall 60, a second inner ring wall 601 and a second outer ring wall 602 which vertically extend downwards from the inner edge and the outer edge of the second annular top wall 60 and abut against the second inner ring wall 231 and the second outer ring wall 232, the third side wall 233 and/or the fourth side wall 234 are/is provided with a second ignition groove 7 communicated with the second gas mixing chamber 61, the second inner ring wall 601 is provided with a second inner fire hole 6011 communicated with the second gas mixing chamber 61, the second outer ring wall 602 is provided with a second outer fire hole 6021 communicated with the second gas mixing chamber 61, and in order to ensure the stability of fire transfer, the first side wall 223 and the second side wall 224 are both provided with a first ignition groove 5 communicated with the first gas mixing chamber 41, wherein the second inner side opening 71 of the second ignition bar 7 is adjacent to one of the second inner fire holes 2311 closest to the third side wall 233 or the fourth side wall 234, and the second outer side opening 72 of the second ignition bar 7 is adjacent to one of the second outer fire holes 2321 closest to the third side wall 233 or the fourth side wall 234. The second ignition groove 7 is lower than the first ignition groove 5, the first ignition groove 5 and the second ignition groove 7 are staggered in height, the probability that the first ignition groove 5 and the second ignition groove 7 are blocked can be effectively reduced, and the air current of the first ignition slot 5 and the second ignition slot 7 in the up/down direction forms rotation, the secondary air outside the first fire cover 4 and the second fire cover 6 and the secondary air in the center can be sucked by the entrainment, the supply of the secondary air is effectively improved, in order to realize the feasibility of the guide piece 3 for supplying the secondary air to the second ignition slot 7 in the lateral direction, the guide piece 3 also comprises a second baffle 32, the secondary air in the central cavity 111 can be guided into the second ignition slot 7 by the second baffle 32, so as to avoid the defects that the fire transfer at the lateral fire transfer position in the prior art is easy to supplement and supply the deficiency of secondary air and is easy to cause fire transfer blocking.

In order to ensure reasonable distribution of secondary air required by the inner ring and the outer ring, a separator 8 is arranged in the central cavity 111, and the separator 8 can separate the central cavity 111 into two relatively independent spaces which are respectively communicated with the air supplementing channel and the inner wall areas of the first air mixing chamber 41 and the second air mixing chamber 61. Because the first fuel gas channel 22 and the second fuel gas channel 23 are both in a C-shaped design, the gas supplementing channel comprises a first gas supplementing channel 24 and a second gas supplementing channel 25 which are positioned at two sides of the central cavity 111, the separator 8 is in a T shape and is provided with a horizontal part 81 and a vertical part 82 which are mutually communicated, two ends of the horizontal part 81 are at least partially arranged along the length direction of the first gas supplementing channel 24 and the second gas supplementing channel 25, the vertical part 82 is positioned at the center of the central cavity 111 and is provided with a first gap 9 with the inner wall 11 of the central cavity 111, and the first gap 9 is communicated with the inner wall areas of the first gas mixing chamber 41 and the second gas mixing chamber 61. In this embodiment, the horizontal portion 81 includes a horizontal partition plate 811, an outer end of the horizontal partition plate 811 extends into the first air supply passage 24 and the second air supply passage 25 and turns upward, an upper surface of the horizontal partition plate 811 is located below the first ignition groove 5 and the second ignition groove 7, a second gap 10 is provided between a lower surface of the horizontal partition plate 811 and a bottom wall of the first air supply passage 24 and the second air supply passage 25, and the second gap 10 is communicated with the first gap 9 to form an air supply passage 101 which is independent from each other and is used for supplying air to the first outer fire hole 2221 and the second outer fire hole 2321. The first air supply channel 24 and the second air supply channel 25 form two independent air supply channels through the separation effect of the separator 8, effectively avoid the phenomenon that the secondary air in the inner wall area of the inner ring of the first fire cover 4 and the second fire cover 6 is over-left, and the secondary air in the outer wall 12 area of the outer ring of the first fire cover 4 and the second fire cover 6 is insufficient is unreasonably distributed, the secondary air is forcibly divided by the separator 8, so that the inner wall area and the outer wall area 12 of the fire burner cover can be fully combusted, and the burner cover with inner and outer two-ring fire is particularly suitable for the fire cover with the inner ring fire and the outer ring fire, the separator 8 can avoid the mutual influence of the secondary air between the fire outlet area of the inner wall 11 and the fire outlet area of the outer wall 12 on one hand, has the function of improving the combustion efficiency of gas, meanwhile, the separator 8 can recycle the heat of the gas mixing chamber, can preheat the secondary air, is favorable for improving the thermal efficiency of the burner, at the same time, the external air can be supplemented inwards through the air supplement channel 101. The first through hole 8112 communicated with the second gap 10 is formed in the first outer side end 8111, extending into the first air supply channel 24, of the horizontal partition plate 811, the first through hole 8112 is arranged to increase turbulence of airflow on the upper surface and the lower surface of the horizontal partition plate, the fire transfer success rate of the first fire transfer groove and the second fire transfer groove can be further increased, and similarly, the second through hole 8114 communicated with the second gap 10 is formed in the second outer side end 8113, extending into the second air supply channel 25, of the horizontal partition plate 811.

In order to supplement the secondary air in the inner wall areas of the first air mixing chamber 41 and the second air mixing chamber 61 more directly, the horizontal portion 81 further includes a cover plate 20 in an inverted U shape covering the horizontal partition 811, and both ends of the cover plate 20 are adjacent to the inner wall areas of the first air mixing chamber 41 and the second air mixing chamber 61. Preferably, the two vertical arms 201 of the cover plate 20 have at least two third through holes 2011 communicating with the vertical portions 82 in the horizontal direction. The secondary air flowing out through the third through holes 2011 of the two vertical arms 201 of the cover plate 20 directly supplements the secondary air to the inner wall areas of the first air mixing chamber 41 and the second air mixing chamber 61, and is more direct and faster. Since both ends of the cover plate 20 are adjacent to the inner wall regions of the first and second air-mixing chambers 41 and 61, the supplementary secondary air is less supplemented than the central regions of the first and second air-mixing chambers 41 and 61, and in order to enhance the supplementary force of the secondary air therein, the central portion of the cover plate 20 has an expanded portion 202 extending toward the inner wall regions of the first and second air-mixing chambers 41 and 61 and having a substantially circular shape. The expanded portion 202 is closer to the central region of the inner wall regions of the first air-mixing chamber 41 and the second air-mixing chamber 61.

Referring to the drawings, as described above, when the first inner fire holes 2211 of the first fire cover 4 and the second inner fire holes 2311 of the second fire cover 6 are blocked by the spilled liquid, the requirement of the secondary air is weakened, the guide member 3 may be rotated to a certain angle, and then the first and second air supplement passages 24 and 25 may be opened, so that the secondary air in the central cavity 111 may directly supplement the first outer fire holes 2221 of the first fire cover 4 and the second outer fire holes 2321 of the second fire cover 6, whereas, when the secondary air in the first inner fire holes 2211 of the first fire cover 4 and the second inner fire holes 2311 of the second fire cover 6 is insufficient, the guide member 3 may be rotated to another angle, and then the first and second air supplement passages 24 and 25 may be closed, and in addition, the relative angles of the guide member 3 and the first and second ignition slots 5 and 7 may be appropriately adjusted, so that the secondary air in the central cavity 111 may be independently supplemented to the first and second ignition slots 5 and 7 through the guide member 3, so as to ensure sufficient supplement of secondary air of the first ignition groove 5 and the second ignition groove 7 and effectively improve the success rate of fire transmission between the first fire cover 4 and the second fire cover 6.

Claims (19)

1. A burner for a gas cooker, characterized in that: comprises the following steps:

the air supply device comprises a base (1), wherein the base (1) is provided with an inner wall (11) and an outer wall (12) which are arranged at intervals, the inner wall (11) encloses a central cavity (111) for air supply, and the inner wall (11) and the outer wall (12) enclose a peripheral cavity (121);

the connecting body (2) comprises a plate body, wherein a central hole (21) aligned with the central cavity (111) is formed in the central position of the plate body, the peripheral edge of the plate body extends in the horizontal direction and can cover the outer wall (12), the peripheral edge is provided with a first gas channel (22) and a second gas channel (23) which are vertical and communicated with the peripheral cavity (121), the first gas channel (22) and the second gas channel (23) are oppositely arranged and are provided with intervals, and the intervals form a supplementary channel communicated with the central cavity (111); and

a guide (3) which is arranged on the periphery of the central hole (21) of the plate body in a rotating manner and can open or close the air supply channels (24, 25).

2. Burner for gas cooktops according to claim 1, characterized in that: the guide piece (3) is arranged on the periphery of the central hole (21) in a rotating mode and can change the size of an air inlet of the air supplementing channel.

3. Burner for gas cooktops according to claim 2, characterized in that: the guide (3) comprises at least one blocking sheet which is arranged on the periphery of the central hole (21) in a rotary opening and closing mode.

4. Burner for gas cooktops according to claim 3, characterized in that: the periphery of the central hole (21) is provided with at least one outward protruding pivot (211) at intervals in the circumferential direction, and the root part of each baffle is pivoted on the corresponding pivot (211) so as to realize the air inlet of each baffle entering the air replenishing channel (24, 25).

5. Burner for gas cooktops as claimed in claim 4, characterized in that: the first gas channel (22) comprises a C-shaped first inner ring wall (221) and a first outer ring wall (222) which are arranged at intervals inside and outside, the corresponding end parts of the first inner ring wall and the first outer ring wall are respectively connected through a first side wall (223) and a second side wall (224), the first gas channel further comprises a first fire cover (4) covering the first gas channel (22), and a first gas mixing chamber (41) is formed between the first fire cover (4) and the connecting body (2).

6. Burner for gas cooktops according to claim 5, characterized in that: the first fire cover (4) comprises a first annular top wall (40), a first inner ring wall (401) and a first outer ring wall (402), wherein the first inner ring wall (401) and the first outer ring wall (402) vertically extend downwards from the inner edge and the outer edge of the first annular top wall (40) and abut against the first inner ring wall (221) and the first outer ring wall (222), the first side wall (223) and/or the second side wall (224) are provided with a first ignition slot (5) communicated with the first gas mixing chamber (41), the first inner ring wall (401) is provided with a first inner fire hole (4011) communicated with the first gas mixing chamber (41), the first outer ring wall (402) is provided with a first outer fire hole (4021) communicated with the first gas mixing chamber (41), a first inner side opening (51) of the first ignition slot (5) extends to one of the first inner fire holes (4011) which is closest to the first side wall (223) or the second side wall (224), the first outer opening (52) of the first fire fuse (5) is adjacent to one of the first outer fire holes (4021) that is closest to the first side wall (223) or the second side wall (224).

7. Burner for gas cooktops according to claim 6, characterized in that: the guide piece (3) comprises a first baffle plate (31), and secondary air in the central cavity (111) can be guided into the first ignition groove (5) by means of the first baffle plate (31).

8. Burner for gas cooktops according to claim 7, characterized in that: the second gas channel (23) comprises a C-shaped second inner annular wall (231) and a second outer annular wall (232) which are arranged at intervals inside and outside, the corresponding end parts of the two are respectively connected through a third side wall (233) and a fourth side wall (234), the second gas channel further comprises a second fire cover (6) which covers the second gas channel (23), and a second gas mixing chamber (61) is formed between the second fire cover (6) and the connecting body (2).

9. Burner for gas cooktops according to claim 8, characterized in that: the second fire cover (6) comprises a second annular top wall (60), a second inner ring wall (601) and a second outer ring wall (602), wherein the second inner ring wall (601) and the second outer ring wall (602) vertically extend downwards from the inner edge and the outer edge of the second annular top wall (60) and abut against the second inner ring wall (231) and the second outer ring wall (232), the third side wall (233) and/or the fourth side wall (234) are provided with a second ignition groove (7) communicated with the second gas mixing chamber (61), the second inner ring wall (601) is provided with a second inner fire hole (6011) communicated with the second gas mixing chamber (61), the second outer ring wall (602) is provided with a second outer fire hole (6021) communicated with the second gas mixing chamber (61), and a second inner side opening (71) of the second ignition groove (7) is adjacent to one of the second inner fire hole (6011) which is closest to the third side wall (233) or the fourth side wall (234), the second outside opening (72) of the second ignition slot (7) is adjacent to one of the second outside flame holes (6021) that is closest to the third side wall (233) or the fourth side wall (234).

10. Burner for gas cooktops according to claim 9, characterized in that: the second ignition groove (7) is lower than the first ignition groove (5).

11. Burner for gas cooktops according to claim 10, characterized in that: the guide piece (3) further comprises a second baffle plate (32), and secondary air in the central cavity (111) can be guided into the second ignition groove (7) through the second baffle plate (32).

12. Burner for gas cooktops according to any one of claims 8 to 11, characterized in that: be provided with separator (8) in central cavity (111), separator (8) can with central cavity (111) is separated into two relatively independent spaces, communicates respectively the tonifying qi passageway with the inner wall region of first gas mixing chamber (41) and second gas mixing chamber (61).

13. Burner for gas cooktops according to claim 12, characterized in that: tonifying qi passageway is including being located first tonifying qi passageway (24) and second tonifying qi passageway (25) of central cavity (111) both sides, separator (8) are the T type, have horizontal part (81) and vertical portion (82) that communicate each other, the both ends of horizontal part (81) are at least local to be followed the length direction of first tonifying qi passageway (24) and second tonifying qi passageway (25) arranges, vertical portion (82) are located the central authorities of central cavity (111), and with leave first clearance (9) between inner wall (11) of central cavity (111), first clearance (9) intercommunication the inner wall region of first gas mixing chamber (41) and second gas mixing chamber (61).

14. Burner for gas cooktops according to claim 13, characterized in that: horizontal part (81) including horizontal baffle (811), the outside end of horizontal baffle (811) stretches into first tonifying qi passageway (24) with second tonifying qi passageway (25) turns over upwards, the upper surface of horizontal baffle (811) is located under first ignition groove (5) and second ignition groove (71), the lower surface of horizontal baffle (811) with first tonifying qi passageway (24) with all have second clearance (10) between the diapire of second tonifying qi passageway (25), second clearance (10) intercommunication first clearance (9), form mutually independent be used for to first outer fire hole (2221) and the outer air supplement passageway (101) of second hole of angering (2321) tonifying qi.

15. Burner for gas cooktops according to claim 14, characterized in that: and a first through hole (8112) communicated with the second gap (10) is formed in a first outer side end (8111) of the horizontal partition plate (811) extending into the first air supply channel (24).

16. Burner for gas cooktops according to claim 15, characterized in that: and the horizontal partition plate (811) extends into a second outer side end (8113) of the second air supply channel (25) and is provided with a second through hole (8114) communicated with the second gap (10).

17. Burner for gas cooktops according to claim 16, characterized in that: the horizontal part (81) further comprises an inverted U-shaped cover plate (20) which covers the horizontal partition plate (811), and two ends of the cover plate (20) are adjacent to the inner wall areas of the first air mixing chamber (41) and the second air mixing chamber (61).

18. Burner for gas cooktops according to claim 17, characterized in that: two vertical arms (201) of the cover plate (20) are provided with at least two third through holes (2011) which are communicated with the vertical parts (82) along the horizontal direction.

19. Burner for gas cooktops according to claim 18, characterized in that: the cover plate (20) has a substantially circular enlarged portion (202) at a central portion thereof, extending toward inner wall regions of the first and second air-mixing chambers (41, 61).

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