CN112128752B - Fire cover for gas stove and burner with fire cover - Google Patents

Fire cover for gas stove and burner with fire cover Download PDF

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Publication number
CN112128752B
CN112128752B CN202010975486.6A CN202010975486A CN112128752B CN 112128752 B CN112128752 B CN 112128752B CN 202010975486 A CN202010975486 A CN 202010975486A CN 112128752 B CN112128752 B CN 112128752B
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Prior art keywords
fire
wall
hole
outer ring
outlet
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CN202010975486.6A
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CN112128752A (en
Inventor
龙艳
程永超
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Priority to CN202010975486.6A priority Critical patent/CN112128752B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • F23D14/58Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/84Flame spreading or otherwise shaping

Abstract

The invention relates to a fire cover for a gas stove and a burner applying the fire cover, comprising a fire cover body, wherein a gas mixing cavity is formed between an annular top wall of the fire cover body and an inner annular wall and an outer annular wall which vertically or obliquely extend downwards from the inner edge and the outer edge of the annular top wall, and the fire cover is characterized in that: the outer ring wall comprises at least two outer ring fire outlet bodies which are arranged along the circumferential direction of the fire cover body at intervals and are communicated with the gas mixing cavity, each outer ring fire outlet body is integrally radial, each outer ring fire outlet body is provided with fire outlet holes which are distributed along the radial direction of the fire cover body at intervals, and compared with the prior art, the fire cover has the advantages that the fire cover body is provided with at least two outer ring fire outlet bodies at intervals along the circumferential direction of the fire cover body, and the fire outlet holes which are distributed on each outer ring fire outlet body at intervals along the radial direction, so that the fire cover body can better surround the pot bottom in two dimensions of the circumferential direction and the radial direction, and the purpose of uniformly heating the pot bottom is realized.

Description

Fire cover for gas stove and burner with fire cover
Technical Field
The invention relates to the technical field of household kitchen utensils, in particular to a fire cover for a gas stove and a burner with the fire cover.
Background
At present, the fire lid of gas-cooker usually comprises roof, annular inside wall and annular lateral wall, and it has a plurality of main fire hole to open along its circumferencial direction on the annular lateral wall of fire lid, and only including the single row fire hole on the annular lateral wall of current gas-cooker fire lid, this type of patent document can refer to the chinese utility model patent of patent number ZL200520014838.2 for a gas-cooker combustor toper fire lid (grant No. CN2842216Y), can also refer to chinese utility model patent of patent number ZL201120246965.0 for a combustor fire lid (grant No. CN 202149492U). The single main fire hole combustion mode disclosed above has the disadvantages that the flame is easy to jump after combustion, the combustion area is unstable, meanwhile, the single row of fire holes not only causes low combustion heat efficiency of the gas stove, but also causes insufficient combustion of the gas, which leads to emission of carbon monoxide gas, and aggravates environmental pollution, for this reason, the Chinese utility model patent No. ZL 21153770, namely 'A gas stove fire cover assembly' (No. CN206191590U), discloses a gas stove fire cover assembly, which comprises a base and a cover body matched with the base, a plurality of inner fire holes are arranged on the inner side wall of the cover body along the peripheral direction, and double rows of outer fire holes are arranged on the outer side wall of the cover body along the peripheral direction, the double rows of outer fire holes comprise a plurality of first outer fire holes positioned in a first row and a plurality of second outer fire holes positioned in a second row, the first outer fire holes and the second outer fire holes are staggered, and by arranging the double rows of outer fire holes on the outer side wall, and first outer fire hole and the crisscross setting of second outer fire hole, the setting of double fire hole has improved the combustion efficiency of gas-cooker effectively, but the periphery fire diameter that this double fire hole formed is the same with the scope of heating the pan the same, and for this reason should have the fire lid of double fire hole and heat the homogeneity of pan relatively poor.
In addition, the fire cover of the burner is additionally provided with a waterproof brim above the fire hole in order to prevent the fire hole from being blocked by the spilled liquid, and the structure of the waterproof brim can refer to the Chinese utility model patent with patent number ZL201820760029.3 (No. CN208804674U) of the applicant, including the fire cover, the main fire hole is arranged on the outer side surface of the fire cover along the circumferential interval distribution, the outer edge of the fire cover extends outwards to form a first waterproof brim above the main fire hole, although the first waterproof brim can block the blockage of the spilled liquid to the main fire hole, the first waterproof brim can also press the flame formed by the main fire hole, thereby influencing the overall combustion thermal efficiency of the main fire hole.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a fire cover for a gas stove, which can uniformly heat a pot bottom, in view of the above-mentioned prior art.
A second technical problem to be solved by the present invention is to provide a fire cover for a gas range, which has a liquid-proof function and in which flames formed by fire holes are not easily pressed.
The third technical problem to be solved by the present invention is to provide a burner which is applied with the fire cover and can effectively supplement secondary air and fully burn, aiming at the current state of the prior art.
In order to solve the first technical problem, the technical scheme adopted by the invention is as follows: this a fire lid for gas-cooker, including the fire lid body, be formed with the gas mixing chamber between the cyclic annular roof of this fire lid body and the interior rampart, the outer rampart that extend downwards that incline or incline from the inboard edge of this cyclic annular roof, outside edge are vertical, its characterized in that: the outer ring wall comprises at least two outer ring fire outlet bodies which are arranged along the circumferential direction of the fire cover body at intervals and are communicated with the gas mixing cavity, each outer ring fire outlet body is integrally radial, and each outer ring fire outlet body is provided with fire outlet holes which are distributed along the radial direction of the fire cover body at intervals.
In order to achieve a better and uniform heating of the pan bottom with the same outer ring of burners, it is preferred that the outer ring wall is locally directly used as the bottom wall of each outer ring of burners, and the side walls of each outer ring of burners also have two: the first inclined edge and the second inclined edge form a V shape, the joint end of the first inclined edge and the second inclined edge is located at the middle tip end of the V shape and is far away from the bottom wall, and the fire outlet is formed in the first inclined edge and/or the second inclined edge. Because first slope limit and second slope limit all extend along the circumference slope of fire lid body, and go out the fire hole and set up at first slope limit and/or second slope limit, can distribute better in the circumference of fire lid body in order to heat the bottom of a boiler.
In order to compensate for the area between the adjacent outer ring fire outlet bodies which still has no fire outlet, it is preferable that the bottom wall is provided with a main fire hole communicated with the gas mixing cavity at every other or more than one outer ring fire outlet body.
In order to realize the steady flame between main fire hole, first fire hole and/or the second fire hole, furtherly, it establishes including seting up in pairs to go out the fire hole first fire hole and the second on the second slope limit of first slope limit go out the fire hole, first fire hole from with the first entrance point of gas mixing chamber intercommunication is to being located the first exit end on first slope limit outwards sets up for the slope, the second go out the fire hole from with the second entrance point of gas mixing chamber intercommunication is to being located the second exit end on second slope limit outwards sets up for the slope, main fire hole with first fire hole and/or main fire hole with the second goes out and has steady flame portion between the fire hole, steady flame portion sets up on first slope limit and/or second slope limit. The flame stabilizing part is arranged between the main fire hole and the first fire outlet hole and/or the second fire outlet hole, so that mutual flame stabilization can be realized among the main fire hole, the first fire outlet hole and the second fire outlet hole.
Further, a portion of the first inclined edge and/or the second inclined edge adjacent to the main fire hole has a flow guide portion which is gradually inclined from the main fire hole toward the flame holder. Because the design of water conservancy diversion portion can make the gas part that flows into main fire hole shunted to steady flame portion, the root in main fire hole can be pulled better to steady flame portion, realizes the stable burning in main fire hole, still has the effect of passing a fire simultaneously.
In order to achieve the fire transmission continuity between the outer ring fire outlet bodies, preferably, the middle tip part of the V-shape of each outer ring fire outlet body is provided with a fire transmission hole for transmitting fire to each other.
In order to prevent overflowing liquid from blocking each outer ring fire body in the cooking process, preferably, the annular top wall of the fire cover body extends outwards in the radial direction to form a waterproof brim of each outer ring fire body. The caliber of the flame stabilizing part is larger than that of the first flame outlet hole and the second flame outlet hole from inside to outside, namely, the calibers of the first flame outlet hole and the second flame outlet hole are gradually reduced from the radial angle, the flame stabilizing part positioned on the inner side can be used as the flame stabilizing part of the first flame outlet hole and/or the second flame outlet hole positioned on the outer side, and meanwhile, the flame stabilizing part is intersected with the inlet end directions of the first flame outlet hole or the second flame outlet hole to form flame stabilization of the flame outlet holes; and the flame that the main fire hole formed is pushed down by waterproof eaves, and flame is down to constitute the flame hole of steady flame portion, first fire outlet and second fire outlet simultaneously, steady flame portion and be located the first fire outlet and the second fire outlet of steady flame portion left and right sides can assemble into a strand of fire in circumference in addition, also can offset the influence of pressing fire that is pushed down and brings by waterproof eaves.
In order to solve the third technical problem, the invention provides a burner with the fire cover, which comprises a base, wherein the fire cover body is arranged on the base, and the burner is characterized in that: the base comprises a base, an inner side wall and an outer side wall, wherein the inner side wall is connected to the base and is abutted against the inner annular wall of the fire cover body, the outer side wall is connected to the base and is abutted against the outer annular wall of the fire cover body, the outer side wall of the base is provided with at least one secondary air supplement chamber which is relatively isolated from the air mixing chamber, and every other one or more than one outer annular fire outlet bodies are provided with corresponding secondary air supplement chambers.
Furthermore, the bottom wall provided with the main fire hole is directly used as the outer wall of the secondary air supplement chamber, and the outer wall is provided with an inflow port which is communicated with the fire outlet hole and used for allowing external secondary air to flow into the secondary air supplement chamber.
Further, the interval between the adjacent secondary air replenishing chambers corresponds to the main fire hole.
In order to avoid the influence of a point caused by the gas flowing into the main fire hole due to the arrangement of the secondary air supplementing chamber, preferably, the secondary air supplementing chamber further comprises an inner wall opposite to the outer wall, and a first wall and a second wall which are connected with the outer wall and the inner wall, the first wall is provided with a first flow guiding edge which is gradually inclined towards the main fire hole and is adjacent to the main fire hole corresponding to the first wall, and correspondingly, the second wall is provided with a second flow guiding edge which is gradually inclined towards the main fire hole and is adjacent to the main fire hole corresponding to the second wall. Through the flow guiding effect of the first flow guiding edge and the second flow guiding edge, the fuel gas can flow to the main fire hole more smoothly.
Compared with the prior art, the burner has the advantages that the at least two outer ring fire outlets are arranged on the fire cover body at intervals in the circumferential direction, and the fire outlets are distributed on the outer ring fire outlets at intervals in the radial direction, so that the fire cover body can better surround the pot bottom in two dimensions of the circumferential direction and the radial direction to achieve the purpose of uniformly heating the pot bottom.
Drawings
FIG. 1 is a schematic structural diagram of a fire cover in an embodiment of the present invention;
FIG. 2 is a schematic view of another angle of the fire cover according to the embodiment of the present invention;
FIG. 3 is a cross-sectional view at a first angle of FIG. 1;
FIG. 4 is a cross-sectional view at a second angle of FIG. 1;
FIG. 5 is a cross-sectional view at a third angle of FIG. 1;
FIG. 6 is a cross-sectional view at a fourth angle of FIG. 1;
FIG. 7 is a schematic view of a burner according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view at an angle of FIG. 7;
fig. 9 is a cross-sectional view at another angle of fig. 7.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in FIGS. 1 to 9, the preferred embodiment of the present invention is shown. The fire cover for the gas stove comprises a fire cover body 1, an annular top wall 11 of the fire cover body 1 and an inner side edge from the annular top wall 11, an inner annular wall 12 with the outer side edge extending vertically or obliquely downwards, and a gas mixing cavity 14 formed between the outer annular wall 13, wherein the outer annular wall 13 comprises at least two outer ring fire outlets 2 which are arranged along the circumferential direction of the fire cover body 1 at intervals and communicated with the gas mixing cavity 14, each outer ring fire outlet 2 is integrally radial, and each outer ring fire outlet 2 is provided with fire outlets distributed along the radial direction of the fire cover body 1 at intervals. Through being provided with two at least outer rings in the circumference of fire lid body 1 at intervals and going out the fire body 2 to go out the fire hole along radial direction interval distribution on each outer ring goes out the fire body 2, can realize so that fire lid body 1 surrounds the bottom of a boiler in circumference and radial two dimensions better, in order to realize the purpose of even heating bottom of a boiler.
In particular, in order to achieve a better uniform heating of the bottom of the pan with one and the same outer ring burner 2, it is preferred that the outer ring wall 13 is locally directly as the bottom wall 24 of each outer ring burner 2, the side walls of each outer ring burner 2 also having two: the first inclined edge 21 and the second inclined edge 22 form a V shape, the joint end 23 of the first inclined edge 21 and the second inclined edge 22 is located at the middle tip end position of the V shape and is far away from the bottom wall 24, the fire outlet holes are formed in the first inclined edge 21 and/or the second inclined edge 22, the fire outlet holes can be formed in the first inclined edge 21 and the second inclined edge 22 or formed in the first inclined edge 21 and the second inclined edge 22 simultaneously, the first inclined edge 21 and the second inclined edge 22 extend along the circumferential direction of the fire cover body 1 in an inclined mode, the fire outlet holes are formed in the first inclined edge 21 and the second inclined edge 22, and the fire outlet holes can be better distributed in the circumferential direction of the fire cover body 1 to heat the bottom of a pot. In order to compensate for the non-fire area between the adjacent outer ring fire-emitting bodies 2, the bottom wall 24 is provided with main fire holes 241 communicated with the gas mixing cavity 14 at every other one or more outer ring fire-emitting bodies 2, and more preferably, every other upper outer ring fire-emitting body 2 is provided with main fire holes 241 communicated with the gas mixing cavity 14. In order to realize flame stabilization between the main fire hole 241, the first fire hole 211 and the second fire hole 221, the fire holes include a second fire hole 221 which is formed in pairs on the first fire hole 211 and the second fire hole 221 of the first inclined edge 21, the first fire hole 211 is disposed obliquely outward from a first inlet end 2111 communicating with the air mixing chamber 14 to a first outlet end 2112 located on the first inclined edge 21, the second fire hole 221 is disposed obliquely outward from a second inlet end 2211 communicating with the air mixing chamber 14 to a second outlet end 2212 located on the second inclined edge 22, a flame stabilizing portion 25 is provided between the main fire hole 241 and the first fire hole 211 and between the main fire hole 241 and the second fire hole 221, the flame stabilizing portion 25 is provided on the first inclined edge 21 and the second inclined edge 22, and the flame stabilizing portion 25 is provided between the main fire hole 241 and the first fire hole 211 and the second fire hole 221 so that the three can be mutually flame-stabilized. In addition, portions of the first and second inclined edges 21 and 22 adjacent to the main fire hole 241 each have a flow guide portion 26, and the flow guide portion 26 is gradually inclined from the main fire hole 241 to the flame holder 25. Due to the design of the flow guide part 26, the part of the gas flowing into the main fire hole 241 can be divided into the flame stabilizing part 25, the flame stabilizing part 25 can better pull the root of the main fire hole 241, the stable combustion of the main fire hole 241 is realized, and meanwhile, the flame transfer function is also realized. In order to achieve the continuity of the fire transmission between the outer ring fire outlets 2, the V-shaped middle tip of each outer ring fire outlet 2 has a fire transmission hole 27 for transmitting fire between each other. In order to prevent overflowing liquid from blocking each outer ring fire body 2 in the cooking process, the annular top wall 11 of the fire cover body 1 extends outwards in the radial direction to form the waterproof eaves 3 of each outer ring fire body 2, wherein for a single outer ring fire body 2, the caliber of the flame stabilizing part 25 of the embodiment is larger than that of the first fire hole 211 and the second fire hole 221, namely, the calibers of the first fire hole 211 and the second fire hole 221 are gradually reduced from inside to outside in the radial direction, the flame stabilizing part 25 positioned on the inner side can be used as the flame stabilizing part 25 of the first fire hole 211 and/or the second fire hole 221 positioned on the outer side, and meanwhile, the flame stabilizing parts 25 are intersected with the inlet end directions of the first fire hole 211 or the second fire hole 221 to form flame stabilization of the fire holes; after the flame formed by the main fire hole 241 is pressed by the waterproof eaves 3, the flame goes downward and forms the flame stabilizing part 25, the first fire outlet holes 211 and the second fire outlet holes 221, and in addition, the flame stabilizing part 25, the first fire outlet holes 211 and the second fire outlet holes 221 which are positioned at the left side and the right side of the flame stabilizing part can be converged into a strand of fire in the circumferential direction, and the influence of pressing fire caused by pressing of the waterproof eaves 3 can be offset.
The embodiment also provides a burner using the fire cover, which comprises a base 4, a fire cover body 1 arranged on the base 4, the base 4 comprising a base 41, an inner side wall 42 connected to the base 41 and abutting against the inner ring wall 12 of the fire cover body 1, and an outer side wall 43 connected to the base 41 and abutting against the outer ring wall 13 of the fire cover body 1, the outer side wall 43 of the base 4 having at least one secondary air supplementary chamber 5 relatively isolated from the air mixing chamber 14, and every other or more than one outer ring fire outlet body 2 having corresponding secondary air supplementary chambers 5. The bottom wall 24 with the main fire hole 241 is directly used as the outer wall of the secondary air supply chamber 5, and the outer wall is provided with an inflow port 50 which is communicated with the fire hole and through which external secondary air flows into the secondary air supply chamber 5. The interval between the adjacent secondary air supplement chambers 5 corresponds to the main fire holes 241. In order to avoid the influence of one point caused by the gas flowing into the main fire hole 241 due to the arrangement of the secondary air supplementing chamber 5, the first wall 52 is provided with a first flow guide edge 521 gradually inclined towards the main fire hole 241 adjacent to the corresponding main fire hole 241, correspondingly, the second wall 53 is provided with a second flow guide edge 522 gradually inclined towards the main fire hole 241 adjacent to the corresponding main fire hole 241, and the gas can flow towards the main fire hole 241 more smoothly through the flow guide effect of the first flow guide edge 521 and the second flow guide edge 522. Through being provided with two at least outer rings in the circumference of fire lid body 1 at intervals and going out the fire body 2 to go out the fire hole along radial direction interval distribution on each outer ring fire body 2, can realize that fire lid body 1 surrounds the bottom of a boiler better at circumference and radial two dimensions like this, with the purpose of realizing the even heating bottom of a boiler, this combustor is provided with secondary air to going out the fire hole independently and supplyes room 5, can follow the entrance point of going out the fire hole and supply secondary air better, with the abundant burning that promotes out the fire hole.
Referring to fig. 8, the paths of the fire cover and the secondary air are as follows:
firstly, gas enters from the gas mixing cavity 14 through the through hole 40 of the base 41 of the base 4, the gas flows out along the first fire outlet hole 211 and the second fire outlet hole 221 of each outer ring fire outlet body 2, and the secondary air supplement of each outer ring fire outlet body 2 is implemented by that external secondary air flows into the secondary air supplement chamber 5 through the inflow port 50;
the gas flows into the flame stabilizing part 25 and the main fire hole 241 on one side of the first fire outlet hole 211 and the second fire outlet hole 221 from the gas mixing cavity 14, from the radial angle, the caliber of the flame stabilizing part 25 of the embodiment is larger than that of the first fire outlet hole 211 and the second fire outlet hole 221, namely, the calibers of the first fire outlet hole 211 and the second fire outlet hole 221 are gradually reduced from inside to outside, the flame stabilizing part 25 on the inner side can be used as the flame stabilizing part 25 of the first fire outlet hole 211 and the second fire outlet hole 221 on the outer side, and the flame stabilizing part 25 is intersected with the inlet end direction of the first fire outlet hole 211 or the second fire outlet hole 221 to form flame stabilization of the fire holes; after the flame formed by the main fire hole 241 is pressed by the waterproof eaves 3, the flame goes downward and forms the flame stabilizing part 25, the first fire outlet holes 211 and the second fire outlet holes 221, and in addition, the flame stabilizing part 25, the first fire outlet holes 211 and the second fire outlet holes 221 which are positioned at the left side and the right side of the flame stabilizing part can be converged into a strand of fire in the circumferential direction, and the influence of pressing fire caused by pressing of the waterproof eaves 3 can be offset.
Thirdly, after long-term use, in case that the whole seam of the main fire hole 241 is blocked, the gas stove can also conduct mutual fire transmission through the fire transmission holes 27 at the V-shaped middle tip parts of the outer ring fire outlet bodies 2.

Claims (7)

1. The utility model provides a fire lid for gas-cooker, including fire lid body (1), be formed with air mixing chamber (14) between cyclic annular roof (11) of this fire lid body (1) and the interior rampart (12) that extend downwards from inboard edge, the outside edge of this cyclic annular roof (11) are vertical or slope, outer rampart (13), its characterized in that: outer rampart (13) including at least two along fire lid body (1) circumference interval sets up and with outer ring play fire body (2) of gas mixing chamber (14) intercommunication, each outer ring goes out fire body (2) wholly is radially, and each outer ring goes out fire body (2) has along fire lid body (1) radial direction interval distribution's play fire hole, outer rampart (13) local direct as every outer ring goes out diapire (24) of fire body (2), and the lateral wall that each outer ring goes out fire body (2) still has two: a first inclined edge (21) and a second inclined edge (22) which form a V shape, wherein a joint end (23) of the first inclined edge (21) and the second inclined edge (22) is positioned at the middle tip part of the V shape and is far away from the bottom wall (24), the fire outlet holes are formed in the first inclined edge (21) and/or the second inclined edge (22), the bottom wall (24) is provided with main fire holes (241) communicated with the air mixing cavity (14) at intervals of one or more outer ring fire outlets (2), the fire outlet holes comprise first fire outlet holes (211) and second fire outlet holes (221) which are formed in the first inclined edge (21) in pairs, and flame parts (25) are arranged between the main fire holes (241) and the first fire outlet holes (211) and/or between the main fire holes (241) and the second fire outlet holes (221), the flame stabilizing part (25) is arranged on the first inclined edge (21) and/or the second inclined edge (22), the middle tip part of the V-shaped outer ring fire outlet body (2) is provided with a fire transfer hole (27) for transferring fire to each other, and the annular top wall (11) of the fire cover body (1) extends outwards along the radial direction to form a waterproof brim (3) of the outer ring fire outlet body (2).
2. Fire cover for gas cookers according to claim 1, characterized in that: the first fire outlet holes (211) are arranged from a first inlet end (2111) communicated with the air mixing cavity (14) to a first outlet end (2112) positioned on the first inclined edge (21) in an inclined and outward mode, and the second fire outlet holes (221) are arranged from a second inlet end (2211) communicated with the air mixing cavity (14) to a second outlet end (2212) positioned on the second inclined edge (22) in an inclined and outward mode.
3. Fire cover for gas cookers according to claim 2, characterized in that: the portion of the first inclined edge (21) and/or the second inclined edge (22) adjacent to the main fire hole (241) has a flow guide portion (26), and the flow guide portion (26) is gradually inclined from the main fire hole (241) to the flame holder portion (25).
4. Burner with a fire cover according to any one of claims 1 to 3, comprising a base (4), the fire cover body (1) being arranged on the base (4), characterized in that: the base (4) comprises a base (41), an inner side wall (42) which is connected to the base (41) and is abutted against the inner ring wall (12) of the fire cover body (1), and an outer side wall (43) which is connected to the base (41) and is abutted against the outer ring wall (13) of the fire cover body (1), wherein the outer side wall (43) of the base (4) is provided with at least one secondary air supplement chamber (5) which is relatively isolated from the air mixing chamber (14), and every other or more than one outer ring fire outlet body (2) is provided with corresponding secondary air supplement chambers (5).
5. The burner of claim 4, wherein: the bottom wall (24) provided with the main fire hole (241) is directly used as the outer wall of the secondary air supplement chamber (5), and the outer wall is provided with an inflow port (50) which is communicated with the fire outlet hole and is used for allowing external secondary air to flow into the secondary air supplement chamber (5).
6. The burner of claim 5, wherein: the interval between the adjacent secondary air replenishing chambers (5) corresponds to the main fire hole (241).
7. The burner of claim 6, wherein: the secondary air supplementing chamber (5) further comprises an inner wall (51) opposite to the outer wall, and a first wall (52) and a second wall (53) which are connected with the outer wall and the inner wall (51), wherein the first wall (52) is provided with a first flow guide edge (521) gradually inclining towards the main fire hole (241) and is adjacent to the main fire hole (241) corresponding to the first wall, and correspondingly, the second wall (53) is provided with a second flow guide edge (522) gradually inclining towards the main fire hole (241) and is adjacent to the main fire hole (241) corresponding to the second wall.
CN202010975486.6A 2020-09-16 2020-09-16 Fire cover for gas stove and burner with fire cover Active CN112128752B (en)

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Application Number Priority Date Filing Date Title
CN202010975486.6A CN112128752B (en) 2020-09-16 2020-09-16 Fire cover for gas stove and burner with fire cover

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Application Number Priority Date Filing Date Title
CN202010975486.6A CN112128752B (en) 2020-09-16 2020-09-16 Fire cover for gas stove and burner with fire cover

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CN112128752A CN112128752A (en) 2020-12-25
CN112128752B true CN112128752B (en) 2022-03-18

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CN211119351U (en) * 2019-09-17 2020-07-28 宁波方太厨具有限公司 Burner fire cover for gas stove
CN110848691A (en) * 2019-11-11 2020-02-28 华帝股份有限公司 Fire cover for combustor and combustor

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