CN112747318B - Burner for gas stove - Google Patents

Abstract

The invention relates to a burner for a gas stove, which comprises an outer ring gas mixing chamber, wherein the outer ring gas mixing chamber comprises an inner ring wall and an outer ring wall which are arranged in a ring shape and are concentrically arranged at intervals and a bottom wall for connecting the inner ring wall and the outer ring wall, an outer ring fire cover covers the upper parts of the inner ring wall and the outer ring wall, and the top wall of the outer ring fire cover is provided with radial main fire holes which are distributed at intervals along the circumferential direction, and the burner is characterized in that: each radial fire hole comprises a fire transfer part for transferring fire, each fire transfer part comprises at least one fire transfer hole communicated with the outer ring gas mixing chamber, the top wall of the outer ring fire cover is provided with a fire transfer chamber with an open lower end every other one or more fire transfer parts, and the fire transfer chamber is provided with fire transfer openings on at least two peripheral walls, compared with the prior art, the invention has the advantages that: the fire transfer chamber can block the overflowed liquid from entering the fire transfer holes of the radial main fire holes, so that flame combustion in the radial main fire holes is guaranteed, the fire transfer holes can be effectively prevented from being blocked by soup, and the fire transfer performance is guaranteed.

Description

Burner for gas stove

Technical Field

The invention relates to the field of household kitchen utensils, in particular to a burner for a gas stove.

Background

At present, a strip-seam burner fire cover sold in the market, such as a Chinese patent invention ' upper air intake type deep internal rotation burner ' with patent number ZL200610122194.8 (publication number CN1920383A), which has an internal rotation strip-seam fire hole, the supplement of secondary air can only depend on the inner side of the inner diameter of the fire cover to supplement the fire hole, but the secondary air goes to the outside of the fire hole, because the secondary air participates in front end combustion, the air quantity is reduced, the supplement of the secondary air is difficult, the supplement amount of the secondary air in the middle and outside is reduced, the phenomena of yellow fire and the like are easily caused, meanwhile, the fire transmission structure of the upper air intake type deep internal rotation burner carries out mutual fire transmission through each internal rotation type fire hole along the circumferential direction, similarly, a novel energy-saving internal rotation fire burner ' of a Chinese utility model patent with patent number ZL201120295746.1 (publication number CN202284793U) can also be referred to, which comprises an outer fire cover and a central fire cover nested on a base, the utility model aims to provide a novel energy-saving internal rotation fire burner which can burn flame inwards when burning, so that the flame is heated in a concentrated pan bottom, the heat is not easy to dissipate and the thermal efficiency is high; or, also refer to a chinese utility model patent with patent number ZL201320427296.6 (publication number CN203442825U), "double internal rotation fire ladder type burner fire cover", which includes a body, the body includes an inner ring wall, an outer ring wall, a top plate and fire holes, the top plate includes an upper top ring plate, a lower top ring plate and an inverted cone platform connecting cylinder connecting the upper and lower top ring plates; the upper end of the inner ring wall is provided with an inverted cone frustum shaped supporting cylinder; the fire holes are respectively a left-handed or right-handed upper fire hole and a right-handed or left-handed lower fire hole, the upper fire holes are arranged on the upper top ring plate and the inverted cone frustum-shaped connecting cylinder, and the lower fire holes are arranged on the inverted cone frustum supporting cylinder and the lower top ring plate; the rotation directions of the upper fire hole and the lower fire hole are opposite. Due to the adoption of the structure, the arrangement of the upper fire holes and the lower fire holes can ensure that the fuel gas and the air are secondarily mixed and are fully combusted, so that the contact area of the pot bottom and the outer flame is increased; the upper fire holes and the lower fire holes are combusted in a crossed manner, so that the heat loss brought away by the flue gas is effectively reduced, and the heat efficiency is improved; the sinking design of the lower fire hole can realize energy-gathered combustion, thus effectively reducing the emission of NO and improving the heat efficiency. The fire transmission structure of the burner fire cover also transmits fire to each other through the internal rotation type fire holes along the circumferential direction, and the fire transmission mode easily causes the following disadvantages: once one or more of the internal rotation type fire holes or the internal rotation type fire grooves are blocked by overflowing liquid, fire transmission failure is easily caused.

In addition, reference may also be made to the "internal swirling fire gas burner for household kitchen range" as a chinese utility model patent with patent No. zl201020162640.x (publication No. CN201680370U), which includes a distributor with an axial secondary air channel, a central distributor and an outer ring distributor; it is characterized in that: the inner ring surface of the outer ring fire distributor is in an inverted cone frustum shape, the inner ring surface is provided with combustion holes along the direction of a generatrix, and an included angle between two combustion holes on one diameter line is an acute angle; the outlet direction is left-handed or right-handed. Due to the adoption of the structure, the fuel gas sprayed from the combustion holes is fully mixed with the axial secondary air channel to form spiral three-dimensional flame, and the fire power is concentrated; the burner port is located outer loop distributor, still has the effect of gathering heat, has practiced thrift the gas, but the burner port of outer loop distributor transmits the gas by central distributor, and the air current that corresponds the burner port of transmission part is rapid violent more, causes the flying fire easily and can not realize better play fire homogeneity. Therefore, further improvements to the above-described internal-rotation gas burner are 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 can improve the success rate of flame propagation for a flame hole, especially a rotary long-strip slit type flame hole, in view of the above-mentioned current state of the art.

The second technical problem to be solved by the present invention is to provide an upper intake burner capable of achieving uniform fire discharge for a fire hole, especially a long slit type fire hole, in view of the above-mentioned prior art.

The third technical problem to be solved by the present invention is to provide an upper air inlet burner that can adapt to a sharp-bottomed pan to achieve uniform fire in view of the above-mentioned prior art.

The fourth technical problem to be solved by the present invention is to provide a burner for a gas stove, which can adjust the gas output of the gas to achieve uniform fire, and is particularly suitable for a sharp pot.

A fifth technical problem to be solved by the present invention is to provide a burner for a gas range capable of effectively preventing backfire in view of the above-mentioned prior art.

In order to solve the first technical problem, the technical scheme adopted by the invention is as follows: this a combustor for gas-cooker, including outer ring gas mixing chamber, outer ring gas mixing chamber is including being the annular and the diapire of interior rampart and outer rampart and connection interior rampart that concentric interval set up, interior rampart and outer rampart top cover have outer ring fire lid, the roof of outer ring fire lid has along the radial main fire hole of circumference interval distribution, its characterized in that: each radial fire hole comprises a fire transfer part for transferring fire, each fire transfer part comprises at least one fire transfer hole communicated with the outer ring gas mixing chamber, a fire transfer chamber with an open lower end is arranged on every other one or more fire transfer parts on the top wall of the outer ring fire cover, and fire transfer openings are formed in at least two peripheral walls of the fire transfer chamber.

In order to avoid that the fire transfer holes are easily blocked by spilled liquid, the fire transfer parts are preferably directly formed on vertical walls between the wall of each radial main fire hole, and the fire transfer holes comprise first fire transfer holes and second fire transfer holes which are arranged on the vertical walls and staggered with each other. The first fire transfer holes and the second fire transfer holes are also arranged in a staggered manner, so that on one hand, the probability of blockage by overflowing liquid can be avoided; on the other hand, the disturbance of the gas flow can be enhanced, so that the turbulence degree of the secondary air and the gas is enhanced, and the success rate of fire transfer is favorably improved.

Furthermore, the peripheral walls of the fire transfer chamber are provided with four peripheral walls, the four peripheral walls comprise a third peripheral wall and a fourth peripheral wall which are vertical to the vertical wall corresponding to the fire transfer holes, and a first peripheral wall and a second peripheral wall which are connected with the third peripheral wall and the fourth peripheral wall, and the fire transfer openings comprise a first fire transfer opening arranged on the first peripheral wall and a second fire transfer opening arranged on the second peripheral wall and used for transferring fire to the first fire transfer opening.

In order to make the air and the gas in each fire transfer chamber sufficient, preferably, the third peripheral wall and/or the fourth peripheral wall are provided with auxiliary fire transfer openings for assisting fire transfer.

Preferably, the first circumferential wall extends along the fire transfer direction and is formed with the boss, the contained angle alpha of first fire transfer hole and/or second fire transfer hole and boss place tangent line is the acute angle to first fire transfer hole and/or second fire transfer hole from the inlet end that communicates with outer ring gas mixing chamber to the end of giving vent to anger that communicates with the fire transfer chamber for the slope upwards and gradually be close to the boss. First biography fire hole and/or second biography fire hole's design can make the gas, can be directly after primary air and secondary air mix the gas mixture with the top striking of boss, the mixing uniformity of gas and air in the gas mixture has been improved, the velocity of flow has been reduced again simultaneously, the flame stabilization performance has been improved, play fine flame stabilization effect to the flame of the biography fire portion of radial fire hole department, can guarantee to pass the inside secondary air supply of firebox, guarantee promptly to pass the flame burning of fire inslot, can effectively prevent the jam of hot water again, the suitability reinforcing to the air door aperture simultaneously, also can guarantee to pass the fire performance promptly under the great condition of air door aperture.

In order to solve the second technical problem, preferably, a pressure equalizing plate for equalizing the air output of the radial main fire hole is arranged in the outer ring air mixing chamber, the pressure equalizing plate comprises an annular plate body, and at least two openings communicated with the air mixing chamber and the radial main fire hole are circumferentially arranged on the annular plate body at intervals.

In order to solve the third technical problem, preferably, the pressure equalizing plate separates the outer ring air mixing chamber into a first outer ring air mixing chamber located above and a second outer ring air mixing chamber located below, the annular plate body of the pressure equalizing plate further has an annular vertical portion, the vertical portion separates the first outer ring air mixing chamber into two relatively independent first inner air mixing chambers located inside and first outer air mixing chambers located outside, and correspondingly, the openings include a first opening corresponding to the first inner air mixing chamber and a second opening corresponding to the first outer air mixing chamber.

In order to adapt to the first opening and the second opening of the pressure equalizing plate, preferably, the radial main fire hole is in an inverted V shape and comprises a first fire outlet part which gradually inclines inwards from top to bottom, a second fire outlet part which gradually inclines outwards from top to bottom and a fire transfer part which is positioned between the first fire outlet part and the second fire outlet part, the first fire outlet part is in fluid communication with the first opening and the first inner air mixing chamber, and the second fire outlet part is in fluid communication with the second opening and the first outer air mixing chamber.

In order to realize more firepower for homogenizing the periphery of the pot bottom of the pot, the volume ratio of the first outer air mixing chamber to the inner cavity of the first inner air mixing chamber is preferably as follows: 3: 1-4: 1.

in order to solve the fourth technical problem, preferably, the first outer air mixing chamber further includes an adjusting member which is relatively movable in the circumferential direction or the radial direction of the pressure equalizing plate, so as to change at least a local sectional area of the second opening.

To facilitate changing the local cross-sectional area of the second opening, it is preferred that the adjusting member is at least partially rotatable in the circumferential direction to reduce the gas entering the second opening by shielding the second opening.

The adjusting piece can enter the second openings in a rotatable mode or a slidable mode, preferably, the adjusting piece comprises an adjusting ring, the adjusting ring is provided with a shielding part corresponding to each second opening, and the shielding part can at least partially shield the second openings along with the movement of the adjusting ring.

Wherein in a rotatable manner: the adjusting ring is provided with notches at intervals along the circumferential direction, and the shielding part is formed by the interval sections between adjacent notches between the same rings.

In order to provide sufficient gas required by fire transfer of the fire transfer part, preferably, the vertical part of the pressure equalizing plate comprises a first vertical wall and a second vertical wall which are oppositely spaced, an annular channel is enclosed between the first vertical wall and the second vertical wall, and a communication port which is in fluid communication with the second outer ring gas mixing chamber and the fire transfer part is at least partially arranged on the part of the pressure equalizing plate corresponding to the annular channel.

Further, the first vertical wall has a first recess that receives the vertical wall of the fire transfer portion and the second vertical wall has a second recess that receives the vertical wall of the fire transfer portion. Wherein the first vertical wall is accommodated in the first recess to form a sealing surface, and the second vertical wall is also accommodated in the second recess to form a sealing surface, thereby realizing that the annular channel is independently arranged relative to the first outer air mixing chamber and the first inner air mixing chamber.

To solve the fifth technical problem, it is preferable that the first outer air mixing chamber includes a narrowing section that narrows the first outer air mixing chamber in a direction from the airflow inlet to the airflow outlet of the second opening. In order to avoid the backfire phenomenon of the second opening, in addition to the regulation of the fire intensity of the second opening through the regulating piece, the speed of the discharged gas is higher than the burning speed of the second opening, and the gas passing through the first outer gas mixing chamber can reach the second fire hole by going through a broken line in a mode of narrowing the first outer gas mixing chamber, so that the flame backflow and backfire prevention can be effectively prevented.

The gas mixing device comprises a base, an inner ring fire cover arranged on the base, a central gas mixing chamber formed between the inner ring fire cover and the base, correspondingly, a central gas channel communicated with the central gas mixing chamber and an outer ring gas channel communicated with the outer ring gas mixing chamber, a gas supplementing chamber enclosed between the central gas mixing chamber and the outer ring gas mixing chamber, and at least one transmission channel arranged along the radial direction and used for transmitting the gas of the outer ring gas channel to a second outer ring gas mixing chamber.

Compared with the prior art, the invention has the advantages that: the roof of outer loop fire lid is provided with the open room of passing fire of lower extreme every one or more pass fire portion, should pass the room of fire and open at two of them perisporium and have the opening of passing fire for pass during the room of fire can block the passing fire hole of the radial main fire hole of entering of overflow, guarantee the burning of flame in the radial main fire hole promptly, can effectively prevent the jam of hot water again and pass the fire hole, in order to guarantee to pass fire performance.

Drawings

FIG. 1 is a schematic view of a burner in accordance with embodiment 1 of the present invention;

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

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic structural view of an outer ring fire cover in embodiment 1 of the present invention;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a schematic structural view of a pressure equalizing plate in embodiment 1 of the present invention;

FIG. 7 is a schematic structural view of an adjustment ring in embodiment 1 of the present invention;

fig. 8 is a schematic structural view of the connecting seat in embodiment 1 of the present invention;

fig. 9 is a schematic structural view of another angle of the connecting seat in embodiment 1 of the present invention.

Detailed Description

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

Example 1

As shown in FIGS. 1 to 9, the preferred embodiment of the present invention is shown. The burner for the gas stove in the embodiment comprises an outer ring gas mixing chamber 1, the outer ring gas mixing chamber 1 comprises an inner ring wall 11 and an outer ring wall 12 which are arranged in a ring shape and are concentrically arranged at intervals, and a bottom wall 13 connecting the inner ring wall 11 and the outer ring wall 12, an outer ring fire cover 2 covers the upper part of the inner ring wall 11 and the outer ring wall 12, the top wall of the outer ring fire cover 2 is provided with radial main fire holes 21 which are distributed at intervals along the circumferential direction, each radial fire hole comprises a fire transfer part for transferring fire, each fire transfer part comprises at least one fire transfer hole communicated with the outer ring gas mixing chamber 1, the top wall of the outer ring fire cover 2 is provided with a fire transfer chamber 20 with an open lower end at every other one or more fire transfer parts, the fire transfer chamber 20 is provided with fire transfer openings at least on two of the peripheral walls 92, the top wall of the outer ring fire cover 2 is provided with a fire transfer chamber 20 with an open lower end at every other one or more fire transfer parts, the fire transfer chamber 20 is provided with fire openings at least on two of the peripheral walls 92, the fire transmission chamber 20 can prevent the overflowing liquid from entering the fire transmission holes of the radial main fire holes 21, so that flame combustion in the radial main fire holes 21 is guaranteed, the fire transmission holes can be effectively prevented from being blocked by the soup, and the fire transmission performance is guaranteed.

In order to prevent the fire holes from being easily clogged by the spilled liquid, it is preferable that the fire transfer portions are directly formed on the vertical walls 214 between the walls of the respective radial main fire holes 21, and the fire transfer holes include first fire transfer holes 2131 and second fire transfer holes 2132 which are provided on the vertical walls 214 and are staggered. The first fire transfer holes 2131 and the second fire transfer holes are also arranged in a staggered manner, so that on one hand, the probability of blockage by overflowing liquid can be avoided; on the other hand, the disturbance of the gas flow can be enhanced, so that the turbulence degree of the secondary air and the gas is enhanced, which is beneficial to enhancing the success rate of the fire transfer, wherein the peripheral walls 92 of the fire transfer chamber 20 are provided with four walls, including a third peripheral wall 201 and a fourth peripheral wall 202 which are perpendicular to the vertical wall 214 corresponding to the fire transfer holes, and a first peripheral wall 203 and a second peripheral wall 204 which connect the third peripheral wall 201 and the fourth peripheral wall 202, and the fire transfer openings include a first fire transfer opening 2031 which is arranged on the first peripheral wall 203 and a second fire transfer opening 2041 which is arranged on the second peripheral wall 204 and transfers fire to the first fire transfer opening 2031. In order to make the air and the gas in each of the fire transfer chambers 20 sufficient, the third circumferential wall 201 and/or the fourth circumferential wall 202 are provided with auxiliary fire transfer openings 2020 for auxiliary fire transfer, and in this embodiment, the third circumferential wall 201 and the fourth circumferential wall 202 are provided with auxiliary fire transfer openings 2020 for auxiliary fire transfer. In addition, a boss 2032 is formed by extending the first peripheral wall 203 along the fire transfer direction, an included angle α between the first fire transfer hole 2131 and/or the second fire transfer hole 2132 and a tangent line of the boss 2032 is an acute angle, and the first fire transfer hole 2131 and/or the second fire transfer hole 2132 is inclined upwards from an air inlet end communicated with the outer ring air mixing cavity to an air outlet end communicated with the fire transfer chamber 20 and gradually approaches to the boss 2032. First biography fire hole 2131 and/or second biography fire hole 2132's design can make the gas, can directly strike with the top of boss 2032 after primary air and secondary air mix the gas mixture, the mixing uniformity of gas and air in the gas mixture has been improved, the velocity of flow has been reduced again simultaneously, the steady flame performance has been improved, play fine steady flame effect to the flame of the biography fire portion of radial fire hole department, can guarantee to pass the inside secondary air supply of firebox 20, guarantee promptly to pass the flame burning in the fire groove, can effectively prevent the jam of hot water again, the suitability reinforcing to the air door aperture simultaneously, also can guarantee to pass the fire performance promptly under the great condition of air door aperture.

The combustor for the gas stove of this embodiment has the pressure equalizing board 3 that is used for even radial main fire hole 21 gas output in outer ring gas mixing chamber 1, and pressure equalizing board 3 is including cyclic annular plate body, and cyclic annular plate body is seted up at least two and gas mixing chamber and the opening of radial main fire hole 21 intercommunication along circumference interval. The outer ring gas mixing chamber 1 of the burner is provided with the pressure equalizing plate 3 for equalizing the radial main fire holes 21 so as to change the fire outlet uniformity of the radial main fire holes 21 of the outer ring fire cover 2, overcome the defects that the inner rotary fire gas burner is easy to cause fire flying and can not realize better fire outlet uniformity, and ensure that the burner is in a stable and good combustion state. Specifically, the pressure equalizing plate 3 divides the outer ring air mixing chamber 1 into a first outer ring air mixing chamber 14 located above and a second outer ring air mixing chamber 15 located below, the annular plate body of the pressure equalizing plate 3 further has an annular vertical portion 31, the vertical portion 31 divides the first outer ring air mixing chamber 14 into two relatively independent first inner air mixing chambers 141 located inside and first outer air mixing chambers 142 located outside, and the corresponding openings include a first opening 32 corresponding to the first inner air mixing chamber 141 and a second opening 33 corresponding to the first outer air mixing chamber 142. In order to enable the radial main fire holes 21 to heat the sharp pot uniformly, the first openings 32 enable the flames of the radial main fire holes 21 to burn inwards, the centers of the bottoms of the flames of the concentrated sharp pot to heat, the second openings 33 enable the flames of the radial main fire holes 21 to burn outwards, the periphery of the bottom of the sharp pot can be effectively and uniformly heated, and therefore heat efficiency is improved. In order to adapt to the use of the pot and the first opening 32 and the second opening 33 of the pressure equalizing plate 3, the radial main fire hole 21 is preferably in an inverted V shape and comprises a first fire outlet 211 gradually inclining inwards from top to bottom and a second fire outlet 212 gradually inclining outwards from top to bottom, wherein the first fire outlet 211 is in fluid communication with the first opening 32 and the first inner air mixing chamber 141, and the second fire outlet 212 is in fluid communication with the second opening 33 and the first outer air mixing chamber 142. In addition, in order to achieve more fire power for the periphery of the bottom of the pot with a sharp pan being uniform, it is preferable that the volume ratio of the inner cavity of the first outer air mixing chamber 142 to the inner cavity of the first inner air mixing chamber 141 is: 3: 1-4: 1. meanwhile, the phenomenon that the bottom of the pot is blackened due to the over-fierce firepower of the first inner air mixing chamber 141 can be avoided. Because the problem of insufficient uniformity caused by different distances between the first fire outlet part 211 and the second fire outlet part 212 of the radial main fire hole 21 and the sharp pot is easily caused when the sharp pot is used, for this purpose, the first outer air mixing chamber 142 further comprises an adjusting piece 4 which can move in the circumferential direction or the radial direction relative to the pressure equalizing plate 3 so as to change at least the local sectional area of the second opening 33. Thereby adjust the local sectional area of second opening 33 and then adjust the fire hole intensity height of second play fire portion 212 through regulating part 4 and thereby compensate and lie in the inboard first play fire portion 211 and the second play fire portion 212 that lies in the outside when using the sharp bottom pot apart from the pot bottom the distance difference and the heating inequality that causes, for the local sectional area of conveniently changing second opening 33, regulating part 4 can rotate along the circumferencial direction at least locally to make the gas that gets into second opening 33 reduce through the sheltering from to second opening 33. Wherein the adjusting piece 4 enters the second opening 33 in a rotatable manner or in a slidable manner, preferably, the adjusting piece 4 includes an adjusting ring, the adjusting ring is provided with a shielding portion 41 corresponding to each second opening 33, the shielding portion 41 can at least partially shield the second opening 33 along with the movement of the adjusting ring, wherein the rotatable manner is: the adjusting ring is provided with notches 42 at intervals along the circumferential direction, the shielding part 41 is formed by the interval sections between adjacent notches 42 between the adjusting ring and the adjusting ring, and the fire intensity of the second opening 33 is increased under the condition that the opening of the second opening 33 is reduced by adjusting the adjusting piece 4.

The fire transfer mode of the radial main fire holes 21 only depends on fire transfer between adjacent radial main fire holes 21, and fire transfer failure is easily caused when one or more of the radial main fire holes 21 are blocked by spilled liquid, so that the radial fire holes further comprise fire transfer parts 213 positioned between the first fire outlet parts 211 and the second fire outlet parts 212, and the fire transfer parts 213 comprise at least one fire transfer hole which is in fluid communication with the second outer ring air mixing chamber 15. In order to provide sufficient gas required by the fire transfer part 213 for transferring fire, preferably, the vertical part 31 of the pressure equalizing plate 3 comprises a first vertical wall 311 and a second vertical wall 312 which are oppositely spaced, an annular channel 313 is enclosed between the first vertical wall 311 and the second vertical wall 312, a communication port 34 which is in fluid communication with the second outer ring gas mixing chamber 15 and the fire transfer part 213 is at least partially opened on a part of the pressure equalizing plate 3 corresponding to the annular channel 313, and the annular channel 313 is independently arranged relative to the first outer gas mixing chamber 142 and the first inner gas mixing chamber 141, so that sufficient gas can be provided for transferring fire of the fire transfer part 213, and the success rate of transferring fire is ensured. Further, the fire transfer portions 213 are directly formed on the vertical walls 214 between the hole walls of the respective radial main fire holes 21, and the fire transfer holes include first fire transfer holes 2131 and second fire transfer holes 2132 which are provided on the vertical walls 214 and are staggered. Due to the staggered arrangement of the first fire transfer holes 2131 and the second fire transfer holes 2132, on one hand, the probability of blockage by overflowing liquid can be avoided; on the other hand, the disturbance of the gas flow can be enhanced, so that the turbulence degree of the secondary air and the gas is enhanced, which is beneficial to improving the success rate of the fire transfer, and the first fire transfer hole 2131 and the second fire transfer hole 2132 are arranged on the vertical wall, so that the probability of the overflowing liquid entering the first fire transfer hole 2131 and the second fire transfer hole 2132 can be reduced to a greater extent, and the first vertical wall 311 is provided with the first notch 3111 for accommodating the vertical wall 214 of the fire transfer part 213 and the second vertical wall 312 is provided with the second notch 3121 for accommodating the vertical wall 214 of the fire transfer part 213, so that the first vertical wall 311 is accommodated in the first notch 3111 to form a sealing surface, and the second vertical wall 312 is also accommodated in the second notch 3121 to form a sealing surface, so that the annular channel 313 is arranged independently relative to the first outer mixing air chamber 142 and the first inner mixing air chamber 141. In order to avoid the backfire phenomenon at the radial fire hole, preferably, the first outer air mixing chamber 142 includes a narrowing section 1421 narrowing the first outer air mixing chamber 142 along the direction from the airflow inlet to the airflow outlet of the second opening 33, and also to avoid the backfire phenomenon at the second opening 33, besides the adjusting member 4 is used for adjusting the fire intensity of the second opening 33 to make the speed of the discharged gas greater than the burning speed of the second opening 33, the gas passing through the first outer air mixing chamber 142 needs to go along a broken line to the second fire hole by narrowing the first outer air mixing chamber 142, so that the flame backflow-backfire prevention can be effectively prevented.

Referring to fig. 3, the burner of the present invention further includes a base 5, an inner ring fire cover 6 disposed on the base 5, a central gas mixing chamber 61 is formed between the inner ring fire cover 6 and the base 5, correspondingly, the base 5 is further provided with a central gas channel 51 communicating with the central gas mixing chamber 61 and an outer ring gas channel 52 communicating with the outer ring gas mixing chamber 1, a gas supplementing chamber 7 is defined between the central gas mixing chamber 61 and the outer ring gas mixing chamber 1, and at least one transmission channel 8 disposed along a radial direction and used for transmitting gas of the outer ring gas channel 52 to the second outer ring gas mixing chamber 15 is disposed in the gas supplementing chamber 7. When inner ring fire lid 6 thickness is thinner (like the panel beating fire lid), can't reach sealed effect through fire lid self weight, current conventional way is that the fire lid is direct riveting on the gas mixing chamber usually, can't dismantle even unable rotation, burn for a long time or can warp under adverse circumstances, the potential safety hazard appears, increase a connecting seat 9 for this reason on central gas channel 51 under inner ring fire lid 6, in order to increase the intensity of inner ring fire lid 6, and simultaneously, even 912 has been seted up to the interval on the connecting seat 9, the play discharge orifice tolerance distribution that makes the inner ring fire lid 6 of flowing that can be fine is more even. For this purpose, the inner ring fire cover 6 is connected with the base 5 through a connecting base 9 detachably connected above the top end opening of the central gas channel 51, the connecting base 9 comprises an end cover 91 and a peripheral wall 92 extending downwards from the periphery of the end cover 91, the end cover 91 of the connecting base 9 is centrally provided with a mounting hole 911 connected with the inner ring fire cover 6, and the periphery of the mounting hole 911 is provided with uniform flow holes 912 surrounding the mounting hole 911 at intervals along the circumferential direction. In order to seal the connecting base 9 and the central air mixing chamber 61, preferably, a circle of convex wall 511 extends upward from the periphery of the top opening of the central gas passage 51, and a circle of lower peripheral wall 92 which can keep close contact with the convex wall 511 extends downward from the peripheral wall 92 of the connecting base 9 to the convex wall 511, so that the bottom of the connecting base 9 and the central gas passage 51 can seal the central air mixing chamber 61 when abutting against the periphery of the top opening. Meanwhile, in order to conveniently realize the detachable connection between the connecting seat 9 and the top of the central gas channel 51, at least one clamping block 921 radially extends outwards from the lower peripheral wall 92 of the connecting seat 9, and a clamping groove 5111 matched with the clamping block 921 is formed on the convex wall 511 of the central gas channel 51, so that the connecting seat 9 can be detachably placed on the convex wall 511 at the top of the central gas channel 51. Finally, in order to realize the sealing between the inner ring fire cover 6 and the connecting seat 9, the inner ring fire cover 6 comprises a top cover 61 and an outer peripheral wall 611 extending downwards from the periphery of the top cover 61, the top cover 61 is provided with at least two radial inner fire holes 612 at intervals along the circumferential direction, the lower surface of the top cover 61 is provided with a mounting part 613 capable of being matched with the mounting hole 911 of the connecting seat 9, and the outer peripheral wall 611 of the inner ring fire cover 6 can be kept in a state of being closely adjacent to the peripheral wall 92 of the connecting seat 9 under the condition that a fastening member is connected between the mounting part 613 of the top cover 61 and the mounting hole 911 of the connecting seat 9.

Referring to fig. 2, the paths (see solid arrows) of the gas and the primary air entering the inside of the outer ring fire cover 2 and the inner ring fire cover 6 are as follows: wherein, the gas and the primary air flow into the central gas channel 51, then flow into the inner ring fire cover 6 through the uniform flow hole 912 of the connecting seat 9, then flow out from the radial inner fire hole 612 and are ignited together with the external secondary air to form inner ring fire; and the gas and the primary air enter the outer ring gas channel 52, flow into the second outer ring gas mixing chamber 15 through the transmission channel 8, then are divided into three strands, enter the first inner gas mixing chamber 141 through the first opening 32 of the pressure equalizing plate 3, enter the first outer gas mixing chamber 142 through the second opening 33 of the pressure equalizing plate 3, simultaneously enter the fire transfer part 213 through the communication opening 34 of the pressure equalizing plate 3 and the annular channel 313 surrounded by the first vertical wall 311 and the second vertical wall 312, the fire transfer part 213 has an independent gas supply to ensure the success rate of fire transfer, in order to realize more firepower for the periphery of the pot bottom of the pot with a sharp uniform top, preferably, the volume ratio of the first outer gas mixing chamber 142 to the inner cavity of the first inner gas mixing chamber 141 is: 3: 1-4: 1, the embodiment is 3.5:1, so as to realize that more firepower is used for homogenizing the periphery of the pot bottom of the sharp pot, and simultaneously avoid the phenomenon that the pot bottom of the sharp pot is blackened due to the overhigh firepower of the first inner gas mixing chamber 141, and in addition, when the sharp pot is used, the problem of insufficient homogeneity caused by different distances between the first fire outlet part 211 and the second fire outlet part 212 of the radial main fire hole 21 and the sharp pot is easily generated, so that the local sectional area of the second opening 33 is adjusted through the adjusting piece 4, the intensity of the fire hole of the second fire outlet part 212 is adjusted, the uneven heating caused by the different distances between the first fire outlet part 211 positioned at the inner side and the second fire outlet part 212 positioned at the outer side and the pot bottom is compensated, under the condition that the opening of the second opening 33 is reduced due to the adjustment of the adjusting piece 4, the fire outlet intensity of the second opening 33 is increased, and the phenomenon of tempering of the radial fire outlet hole can be avoided, in addition to the above-mentioned regulation of the fire intensity of the second opening 33 by the regulating member 4, the speed of the discharged gas is greater than the burning speed of the second opening 33, and the gas passing through the first outer gas mixing chamber 142 needs to travel a broken line to reach the second fire hole by narrowing the first outer gas mixing chamber 142, so that the flame backflow and backfire prevention can be effectively prevented.

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: the adjusting member 4 moves in a radial direction relative to the pressure equalizing plate 3, and the adjusting member 4 may be a plate-like structure independently corresponding to each second opening 33.

Example 3

The structure is basically the same as that of the embodiment 2, and the only difference is that: the adjusting piece 4 moves in the radial direction relative to the pressure equalizing plate 3, the adjusting piece 4 is of an integrated first annular structure and a second annular structure, and the first annular structure moves in the radial direction relative to the pressure equalizing plate 3.

Claims (15)

1. The utility model provides a combustor for gas-cooker, is including outer ring gas mixing chamber (1), outer ring gas mixing chamber (1) is including being annular and inner ring wall (11) and outer ring wall (12) that concentric interval set up and diapire (13) of connecting inner ring wall (11) and outer ring wall (12), inner ring wall (11) and outer ring wall (12) top cover have outer ring fire lid (2), the roof of outer ring fire lid (2) has along radial main fire hole (21) of circumference interval distribution, its characterized in that: each radial fire hole comprises a fire transfer part (213) for transferring fire, each fire transfer part (213) comprises at least one fire transfer hole communicated with the outer ring gas mixing chamber (1), every other one or more fire transfer parts on the top wall of the outer ring fire cover (2) are provided with fire transfer chambers (20) with lower ends open, and the fire transfer chambers (20) are at least provided with fire transfer openings on two peripheral walls; the fire transfer part is directly formed on a vertical wall (214) between the hole walls of the radial main fire holes (21), the fire transfer holes comprise first fire transfer holes (2131) and second fire transfer holes (2132) which are arranged on the vertical wall (214) and staggered, the peripheral wall of the fire transfer chamber (20) comprises a first peripheral wall (203), a boss (2032) is formed by extending the first peripheral wall (203) along the fire transfer direction, an included angle alpha between the first fire transfer hole (2131) and/or the second fire transfer hole (2132) and the tangent line of the boss (2032) is an acute angle, and the first fire transfer hole (2131) and/or the second fire transfer hole (2132) are inclined upwards and gradually approach to the boss (2032) from an air inlet end communicated with the outer ring air mixing cavity to an air outlet end communicated with the fire transfer chamber (20).

2. Burner for gas cooktops according to claim 1, characterized in that: the peripheral walls of the fire transfer chamber (20) are four, and comprise a third peripheral wall (201) and a fourth peripheral wall (202) which are perpendicular to the vertical wall (214) corresponding to the fire transfer holes, and a first peripheral wall (203) and a second peripheral wall (204) which are connected with the third peripheral wall (201) and the fourth peripheral wall (202), and the fire transfer openings comprise a first fire transfer opening (2031) arranged on the first peripheral wall (203) and a second fire transfer opening (2041) arranged on the second peripheral wall (204) and used for transferring fire to the first fire transfer opening (2031).

3. Burner for gas cooktops according to claim 2, characterized in that: and the third peripheral wall (201) and/or the fourth peripheral wall (202) are/is provided with an auxiliary fire transfer opening (2020) for assisting fire transfer.

4. The burner for a gas range according to any one of claims 1 to 3, wherein: the outer ring air mixing chamber (1) is internally provided with a pressure equalizing plate (3) which is used for equalizing the air output of the radial main fire hole (21), the pressure equalizing plate (3) comprises an annular plate body, and the annular plate body is provided with at least two openings communicated with the air mixing chamber and the radial main fire hole (21) at intervals along the circumferential direction.

5. Burner for gas cooktops according to claim 4, characterized in that: the pressure equalizing plate (3) will outer loop air mixing chamber (1) is separated into first outer loop air mixing chamber (14) that is located the top and second outer loop air mixing chamber (15) that is located the below, and the annular plate body of pressure equalizing plate (3) still has annular vertical portion (31), vertical portion (31) will first outer loop air mixing chamber (14) is separated into two relatively independent, is located inboard first interior air mixing chamber (141) and is located outside first outer air mixing chamber (142), correspondingly the opening is including first opening (32) that correspond first interior air mixing chamber (141) and second opening (33) that correspond first outer air mixing chamber (142).

6. Burner for gas cooktops according to claim 5, characterized in that: radial main fire hole (21) are the V font of invering, including first fire portion (211) that goes out of top-down gradual leanin, second fire portion (212) that top-down gradually leaned out and be located first fire portion (211) and second fire portion (212) centre pass fire portion, first fire portion (211) with first opening (32), first interior air mixing chamber (141) are linked together, second fire portion (212) with second opening (33), first outer air mixing chamber (142) are linked together.

7. Burner for gas cooktops according to claim 6, characterized in that: the volume ratio of the first outer air mixing chamber (142) to the inner cavity of the first inner air mixing chamber (141) is as follows: 3: 1-4: 1.

8. burner for gas cooktops according to claim 7, characterized in that: the first outer air mixing chamber (142) further comprises an adjusting piece (4) which can move in the circumferential direction or the radial direction relatively to the pressure equalizing plate (3) so as to change the local sectional area of at least the second opening (33).

9. Burner for gas cooktops according to claim 8, characterized in that: the adjusting element (4) can be rotated at least in some regions in the circumferential direction in order to reduce the gas entering the second opening (33) by shielding the second opening (33).

10. Burner for gas cooktops according to claim 9, characterized in that: the adjusting piece (4) comprises adjusting rings, the adjusting rings are provided with shielding parts (41) corresponding to the second openings (33), and the shielding parts (41) can at least partially shield the second openings (33) along with the movement of the adjusting rings.

11. Burner for gas cooktops according to claim 10, characterized in that: the adjusting ring is provided with notches (42) at intervals along the circumferential direction, and the shielding part (41) is formed by interval sections between adjacent notches (42) between the same ring.

12. Burner for gas cooktops according to any one of claims 5 to 11, characterized in that: the vertical part (31) of the pressure equalizing plate (3) comprises a first vertical wall (311) and a second vertical wall (312) which are relatively spaced, an annular channel (313) is defined between the first vertical wall (311) and the second vertical wall (312), and a communication port (34) which is in fluid communication with the second outer ring air mixing chamber (15) and the fire transfer part (213) is at least partially formed in the part, corresponding to the annular channel (313), of the pressure equalizing plate (3).

13. Burner for gas cooktops according to claim 12, characterized in that: the first vertical wall (311) has a first notch (3111) accommodating the vertical wall (214) of the fire transfer portion (213) and the second vertical wall (312) has a second notch (3121) accommodating the vertical wall (214) of the fire transfer portion (213).

14. Burner for gas cooktops according to claim 13, characterized in that: the first outer air mixing chamber (142) comprises a narrowing section (1421) which narrows the first outer air mixing chamber (142) along the direction from the airflow inlet to the airflow outlet of the second opening (33).

15. Burner for gas cooktops according to claim 13 or 14, characterized in that: the gas mixing device is characterized by further comprising a base (5) and an inner ring fire cover (6) arranged on the base (5), a central gas mixing chamber (61) is formed between the inner ring fire cover (6) and the base (5), correspondingly, the base (5) is further provided with a central gas channel (51) communicated with the central gas mixing chamber (61) and an outer ring gas channel (52) communicated with the outer ring gas mixing chamber (1), a gas supplementing chamber (7) is formed between the central gas mixing chamber (61) and the outer ring gas mixing chamber (1) in a surrounding mode, and at least one transmission channel (8) which is arranged along the radial direction and used for transmitting gas of the outer ring gas channel (52) to a second outer ring gas mixing chamber (15) is arranged in the gas supplementing chamber (7).

Images