CN112815314B - Burner and gas stove - Google Patents

Burner and gas stove Download PDF

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Publication number
CN112815314B
CN112815314B CN202110076246.7A CN202110076246A CN112815314B CN 112815314 B CN112815314 B CN 112815314B CN 202110076246 A CN202110076246 A CN 202110076246A CN 112815314 B CN112815314 B CN 112815314B
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CN
China
Prior art keywords
fire
ring
burner
fire cover
outer ring
Prior art date
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Application number
CN202110076246.7A
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Chinese (zh)
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CN112815314A (en
Inventor
潘福敏
朱运波
李忠华
陆祖安
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Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Original Assignee
Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
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Application filed by Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd filed Critical Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority to CN202110076246.7A priority Critical patent/CN112815314B/en
Priority claimed from PCT/CN2021/078903 external-priority patent/WO2022156046A1/en
Publication of CN112815314A publication Critical patent/CN112815314A/en
Application granted granted Critical
Publication of CN112815314B publication Critical patent/CN112815314B/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
    • F23D14/04Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • 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
    • 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
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00Stoves or ranges for gaseous fuels
    • F24C3/08Arrangement or mounting of burners
    • F24C3/085Arrangement or mounting of burners on ranges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D2900/00Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14Special features of gas burners
    • F23D2900/14062Special features of gas burners for cooking ranges having multiple flame rings

Abstract

The invention discloses a combustor and a gas stove, and relates to the technical field of combustors, wherein the combustor comprises a gas distribution disc and a fire cover, the gas distribution disc comprises an annular disc peripheral wall, the annular disc peripheral wall is provided with a plurality of primary mixed gas through holes which are circumferentially arranged at intervals and axially penetrate through the annular disc peripheral wall, and a plurality of secondary air holes which are circumferentially arranged at intervals and radially penetrate through the annular disc peripheral wall, and the number of the secondary air holes or the primary mixed gas through holes is more than or equal to 10; and the fire cover is including being annular and covering outer fire cover, the suit of locating on the gas distribution plate inner fire cover and a plurality of web spokes that cover outer fire cover and interior fire cover are connected respectively along circumference interval arrangement to a plurality of web spokes, and the outer ring chamber and a plurality of one time gas mixture via hole intercommunication of outer fire cover all are equipped with a plurality of fire holes on outer fire cover, interior fire cover and the web spoke. The burner and the gas stove have high heat efficiency and heat load.

Description

Burner and gas stove
Technical Field
The invention relates to the technical field of burners, in particular to a burner and a gas stove.
Background
In the related technology, in order to improve the firepower and the heating uniformity of the gas stove, a part of combustion stoves adopt a three-ring fire form for supplying fire, namely, three circles of flames of inner ring fire, middle ring fire and outer ring fire can be formed in sequence from inside to outside when a burner works; alternatively, the partial combustion cookers increase the heat load of the gas cookers by enlarging the gas nozzles. However, after the heat load of the gas cooker is increased, the heat efficiency of the gas cooker is reduced and the smoke emission is not up to the standard.
Disclosure of Invention
The invention aims to provide a novel burner and a gas stove, which have good comprehensive performance.
In order to achieve the purpose, the invention provides a combustor, which comprises an air distribution plate and a fire cover, wherein the air distribution plate comprises an annular plate peripheral wall, the annular plate peripheral wall is provided with a plurality of primary mixed gas through holes which are circumferentially arranged at intervals and axially penetrate through the annular plate peripheral wall and a plurality of secondary air holes which are circumferentially arranged at intervals and radially penetrate through the annular plate peripheral wall, the fire cover comprises an outer fire cover which is annular and is covered on the air distribution plate, an inner fire cover sleeved in the outer fire cover and a plurality of connecting spokes, the plurality of connecting spokes are circumferentially arranged at intervals and are respectively connected with the outer fire cover and the inner fire cover, an outer annular cavity of the outer fire cover is communicated with the plurality of primary mixed gas through holes, and the outer fire cover, the inner fire cover and the connecting spokes are respectively provided with a plurality of fire holes.
In some embodiments, the number of secondary air holes may be greater than or equal to 10.
In some embodiments, the area of the cross section of the secondary air hole perpendicular to the self-axial direction may be 50mm or more2And is less than or equal to 120mm2
In some embodiments, the number of the primary mixed gas through holes may be greater than or equal to 10, and the secondary air holes and the primary mixed gas through holes are sequentially and alternately distributed along the circumferential direction; alternatively, the plurality of secondary air holes may be uniformly grouped in the circumferential direction to form a plurality of secondary air hole groups arranged at intervals in the circumferential direction and including at least two secondary air holes, the secondary air hole groups and the primary mixed air hole holes being alternately distributed in sequence in the circumferential direction.
In some embodiments, the secondary air holes may be round holes; or the secondary air holes can be waist-shaped holes, and the parallel waist edges of the waist-shaped holes are arranged along the axial direction of the air distribution disc.
In some embodiments, the top end outer edge and the top end inner edge of the annular disc peripheral wall can be connected with the outer fire cover peripheral wall and the outer fire cover inner peripheral wall of the outer fire cover respectively.
In some embodiments, the web spokes may be hollow cylindrical and the cylindrical cavity of the web spokes is a spoke cavity, and the two cylindrical ends of the web spokes are respectively connected with the outer fire cover and the inner fire cover.
In some embodiments, the axial direction of the web spokes may be arranged along the radial direction of the fire lid and the area of the cross section of the web spokes perpendicular to the radial direction gradually decreases from the outside to the inside.
In some embodiments, the web spoke may be provided with a spoke cavity and include a spoke top wall defining the spoke cavity, a spoke bottom wall, and two spoke side walls connected between the spoke top wall and the spoke bottom wall, the two spoke side walls are circumferentially spaced apart and the connection positions of the two spoke side walls and the spoke top wall are respectively formed with inclined wall portions inclined upward, a plurality of fire holes are provided on the two inclined wall portions, the two inclined wall portions include a front-side inclined wall portion arranged clockwise forward and a rear-side inclined wall portion arranged clockwise rearward, the front-side inclined wall portions of the plurality of web spokes or the rear-side inclined wall portions of the plurality of web spokes are formed as bent walls, and the plurality of fire holes are spaced apart on the bent walls.
In some embodiments, outer fire lid can include outer fire lid internal perisporium and outer fire lid periphery wall, and interior fire lid includes interior fire lid internal perisporium and interior fire lid periphery wall, and outer fire lid internal perisporium and interior fire lid internal perisporium can all incline upwards and set up inwards, and interior fire lid periphery wall inclines upwards and sets up outwards, and a plurality of fire holes on the outer fire lid internal perisporium, a plurality of fire holes on the interior fire lid internal perisporium and a plurality of fire holes on the interior fire lid periphery wall are respectively along circumference interval arrangement.
In some embodiments, the plurality of fire holes on the inner peripheral wall of the outer fire cover may be circumferentially spaced and heightwise spaced to form a plurality of outer fire hole rings; and/or the plurality of fire holes on the outer peripheral wall of the inner fire cover can be arranged at intervals along the circumferential direction and at intervals along the height direction to form a plurality of inner ring outer fire hole rings; and/or the plurality of fire holes on the inner peripheral wall of the inner fire cover can be arranged along the circumferential direction and at intervals along the height direction to form a plurality of inner ring inner fire hole rings.
In some embodiments, the height of the top edge of the inner fire cover can be lower than or equal to the height of the bottom edge of the inner peripheral wall of the outer fire cover, and the heights of the fire holes in the outer fire cover, the fire holes in the connecting spokes and the fire holes in the inner fire cover are gradually reduced.
In some embodiments, an annular partition cavity wall can be arranged between the outer peripheral wall of the inner fire cover and the inner peripheral wall of the inner fire cover to partition the annular cavity of the inner fire cover into a middle annular cavity and an inner annular cavity, the outer peripheral wall of the inner fire cover and the partition cavity wall jointly define the middle annular cavity, and the inner peripheral wall of the inner fire cover and the partition cavity wall jointly define the inner annular cavity.
In some embodiments, the outer ring cavity of the outer fire cover, the spoke cavities of the web spokes, and the middle ring cavity may be in communication in sequence.
In some embodiments, the burner may further include a burner disposed below the fire cover and the gas distribution plate, the burner including:
an inner ring injection pipe;
an outer ring injection pipe;
the inner ring seat is internally provided with an inner ring distribution air passage communicated with the inner ring injection pipe, and the inner ring distribution air passage is communicated with the inner ring cavity;
the middle ring seat is sleeved between the inner ring seat and the outer ring seat and internally provided with a middle ring distribution air passage, and the middle ring distribution air passage is communicated with the outer ring distribution air passage through a middle and outer ring connecting air passage; and
the outer ring seat is sleeved outside the inner ring seat and internally provided with an outer ring distribution air passage communicated with the outer ring injection pipe, the bottom end face of the circumferential wall of the annular disc covers the upper opening of the outer ring distribution air passage, and the plurality of primary mixed gas through holes are communicated with the outer ring distribution air passage.
In some embodiments, the upper opening of the middle ring distribution airway may be in communication with the middle ring cavity.
In some embodiments, the inner fire cover may further include an inner fire cover bottom wall covering the lower opening of the middle ring cavity, and the burner further includes an air passage cover body detachably disposed on the middle ring seat and covering the upper opening of the middle ring distribution air passage.
In some embodiments, the inner ring seat comprises an inner ring seat inner peripheral wall and an inner ring seat outer peripheral wall defining an inner ring distribution air passage, the middle ring seat comprises a middle ring seat inner peripheral wall and a middle ring seat outer peripheral wall defining a middle ring distribution air passage, the outer ring seat comprises an outer ring seat inner peripheral wall and an outer ring seat outer peripheral wall defining an outer ring distribution air passage, and the middle ring and outer ring connecting air passage extends in the radial direction and penetrates between the middle ring seat outer peripheral wall and the outer ring seat inner peripheral wall.
In some embodiments, the air outlet of the outer ring injection pipe can be arranged on the outer circumferential wall of the outer ring seat, the middle and outer ring connecting air duct and the outer ring injection pipe are both straight pipes and extend outwards along the same radial direction, the air inlet of the communication channel, which is positioned on the inner circumferential wall of the outer ring seat, of the middle and outer ring connecting air duct faces the air outlet of the outer ring injection pipe, and the area of the air inlet of the communication channel is smaller than that of the air outlet of the outer ring injection pipe.
In some embodiments, the outer and inner annular ejector tubes may extend radially and be circumferentially spaced apart.
In some embodiments, the inner fire cover may further include an inner fire cover bottom wall covering the lower opening of the middle annular cavity, and the burner may further include a burner head disposed below the fire cover and the gas distribution plate, the burner head including:
an inner ring injection pipe;
an outer ring injection pipe;
the inner ring seat is internally provided with an inner ring distribution air passage communicated with the inner ring injection pipe, and the inner ring distribution air passage is communicated with the inner ring cavity; and
the outer ring seat is sleeved outside the inner ring seat and internally provided with an outer ring distribution air passage communicated with the outer ring injection pipe, the bottom end face of the circumferential wall of the annular disc covers the upper opening of the outer ring distribution air passage, and the plurality of primary mixed gas through holes are communicated with the outer ring distribution air passage.
In some embodiments, the interface portion of the outer ring injection pipe may be located at the bottom of the outer ring seat, the outer ring injection pipe is communicated with the outer ring distribution air passage along the tangential direction, the interface portion of the inner ring injection pipe is located at the bottom of the inner ring seat, the inner ring injection pipe is communicated with the inner ring distribution air passage along the tangential direction, and the outer ring injection pipe and the inner ring injection pipe are arranged in parallel at intervals.
In some embodiments, the burner may further include a pan support sleeved outside the fire cover and the gas distribution plate, the pan support including:
the energy-gathering disc is annular;
the support part is arranged on the energy-gathering plate and is used for supporting the cooker; and
the heat recovery fins are arranged on the bottom surface of the energy collection disc and are arranged at intervals along the circumferential direction, and a secondary air heat recovery channel is formed between any two heat recovery fins.
In some embodiments, the energy concentrating discs may include a first energy concentrating disc and a second energy concentrating disc arranged concentrically and above one another, a disc bottom surface of the first energy concentrating disc and a disc top surface of the second energy concentrating disc together defining a thermal insulation chamber, the plurality of support legs are disposed on the disc top surface of the first energy concentrating disc, and the plurality of heat return fins are disposed on the disc bottom surface of the second energy concentrating disc.
Accordingly, the present application provides a gas range comprising the burner as described above.
The burner comprises the gas distribution plate and the fire cover covered on the gas distribution plate, wherein the fire cover comprises an outer fire cover, an inner fire cover and a plurality of connecting spokes, the outer fire cover, the inner fire cover and the connecting spokes are all provided with a plurality of fire holes, so that the burner not only forms two rings of flames on the inner fire cover and the outer fire cover, but also forms flames at the gap position between the two rings of flames through the connecting spokes, the flames can be uniformly distributed on the whole fire plane, and the uniform fire heating performance of the burner is effectively improved. In addition, the number of fire holes of the fire cover is greatly increased, the heat load can be fully released, and the heat load of the combustor is favorably improved; simultaneously, the flame of web spokes extends inwards, is favorable to promoting the whole efficiency of combustor. In addition, a plurality of web spokes are connected between the outer fire cover and the inner fire cover, which is more beneficial to increasing the speed of fire transfer and the stability of ignition. The gas distribution disc is provided with a plurality of secondary air holes which are distributed at intervals along the circumferential direction and penetrate along the radial direction, so that the secondary air and the primary mixed gas are distributed more uniformly, and the combustion efficiency is better; and the vortex effect that secondary air formed is also less, and the air inlet flow line is more even, and the air intake resistance reduces, and the flow resistance is little, and the air input will be more, and then is favorable to improving the thermal efficiency and the heat load of combustor for the comprehensive properties of combustor is better.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 and 3 respectively show a schematic structural view of a burner according to a first embodiment of the invention from different perspectives;
fig. 2 and 4 correspond to an exploded view of the installation of the burner of fig. 1 and 3;
FIGS. 5 and 6 are schematic views of the fire cover of FIG. 1 from different perspectives;
FIGS. 7 and 8 are schematic structural views of the air distribution plate in FIG. 2 at different viewing angles;
fig. 9 is a schematic structural view of the burner of fig. 1;
FIGS. 10 and 12 are sectional views of the burner of FIG. 1 in different positions, respectively;
FIG. 11 is an exploded view of FIG. 10;
FIG. 13 is a schematic structural view of a burner according to a second embodiment of the present invention;
FIGS. 14 and 15 are exploded views of the installation of the burner of FIG. 13 at different angles, respectively;
FIGS. 16 and 17 are schematic views of the fire cover of FIG. 13 from different perspectives;
FIGS. 18 and 19 are schematic views of the gas distribution plate of FIG. 13 from another perspective;
fig. 20 is an exploded view of the mounting of the burner of fig. 14;
FIG. 21 is a schematic view of the structure of the air duct cover in FIG. 20;
FIGS. 22 and 24 are sectional views of the burner of FIG. 13 in different positions, respectively;
FIG. 23 is an exploded view of FIG. 22;
FIGS. 25 and 26 are schematic structural views of a burner according to a third embodiment of the present invention, respectively;
fig. 27 and 28 correspond to the installed exploded views of the burner of fig. 25 and 26;
FIGS. 29 and 30 are schematic views of the pan support of FIG. 25 from different perspectives;
FIG. 31 is a cross-sectional view of the wok support of FIG. 29;
fig. 32 is an exploded view of the pan support of fig. 29, with intermediate reinforcing fins added between any two adjacent return fins.
Description of the reference numerals
1000 burner
100 fire lid 101 connecting spoke
Front side wall of 1011 spoke and rear side wall of 1012 spoke
1013 spoke chamber 102 inner fire cover
1021 inner fire cover inner peripheral wall 1022 inner fire cover outer peripheral wall
1023 inner ring cavity of partition cavity wall 1024
1025 bottom wall of fire cover in annular cavity 1026
10261 outer fire cover of air passage air inlet 103 of inner ring
1031 outer fire cover inner peripheral wall 1032 outer fire cover peripheral wall
1033 outer ring cavity 104 fire hole
105 secondary air channel 106 fire stabilizing groove
200 furnace end 201 inner ring seat
2011 inner ring distribution air channel 2012 inner ring seat inner peripheral wall
2013 inner ring base peripheral wall 2015 inner ring base bottom wall
202 middle ring seat 2021 middle ring distribution air passage
2022 middle ring seat bottom wall 2023 outer ring seat peripheral wall
203 outer ring seat 2031 outer ring distribution air passage
2032 an inner peripheral wall 2033 of the outer ring seat and an outer peripheral wall of the outer ring seat
2034 bottom wall 204 of the outer ring seat and the inner ring injection pipe
205 outer ring injection pipe 2051 outer ring injection pipe air outlet
206 middle and outer ring communicating air flue 2061 communicating channel air inlet
207 connecting the top wall 208 with the air duct cover
2081 inner ring air flue gas outlet 2082 plug-in convex part
2083 first annular plug groove 2084 first annular plug wall
2085 second annular socket groove 2086 second annular socket wall
209 inner ring distribution airway cover plate 2091 airway outlet
300 gas distribution plate 301 annular plate peripheral wall
3011 the annular wall 302 of the top end has a first mixed gas passing hole
3021 radial outer end of mixed gas via 3022 radial inner end of mixed gas via
303 secondary air hole 500 middle inner ring air distribution disc part
400 pot support 401 gathers can dish
4011 first energy concentrating disk 40111 annular lower groove
4012 second energy concentrating disk 402 spider foot
403 middle reinforcing fin of heat regenerative fin 404
4041 wing plate piece 4042 web piece
405 support feet 406 secondary air regenerative channel
407 insulating cavity
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
Hereinafter, a burner 1000 and a gas range according to the present invention, which are superior in overall performance, will be described with reference to the accompanying drawings.
With the continuous improvement of living standard, people continuously pursue higher quality life style and pay more attention to the concept of healthy diet. However, the inventor of the present application finds that the existing burner focuses on high thermal load and high thermal efficiency performance more and is not concerned enough about even-fire heating performance, which causes that when a user cooks, the flame distribution of the burner causes uneven heating of food materials in a local area of a pot, which causes scorching, and seriously affects the cooking effect of the food materials and the dietary health of the user. In addition, the oil fume volatilized in the air after the food materials are burnt at high temperature contains more carcinogenic substances, so that great harm is brought to the human health, and the cooking experience of a user is also seriously influenced.
In addition, in the related art, in order to improve the firepower and the heating uniformity of the gas stove, the partial combustion stove adopts a three-ring fire form for supplying fire, namely, three circles of flames of inner ring fire, middle ring fire and outer ring fire can be formed in sequence from inside to outside when the burner works; alternatively, the partial combustion cookers increase the heat load of the gas cookers by enlarging the gas nozzles. However, through continuous research and experiments, the inventor of the present application finds that the existing gas distribution plate is difficult to meet the combustor with high heat load and high combustion efficiency. This is because, after the heat load of the gas range is increased, the combustion condition is deteriorated due to insufficient supplement of secondary air, so that the heat efficiency is reduced and the smoke emission is not up to the standard. The secondary air supplement is insufficient, one is that the total supplement quantity of the secondary air is insufficient, so that the proportion of the total quantity of the air to the total quantity of the fuel gas is abnormal, and the combustion condition is deteriorated due to oxygen deficiency, so that the heat efficiency is reduced and the smoke emission is not up to the standard; the other is that the mixing ratio of the secondary air and the fuel gas is abnormal due to the uneven or insufficient mixing of the secondary air and the fuel gas, so that the combustion condition is deteriorated, the heat efficiency is reduced, and the smoke emission does not reach the standard.
In view of this, the inventor of the present application has made continuous thinking and research to provide a burner 1000 with good overall performance, so as to bring healthy eating ways and cooking experiences to users. As shown in fig. 1 to 6, the burner 1000 includes a gas distributor 300 and a fire cover 100 covering an annular plate peripheral wall 301 of the gas distributor 300. The fire cover 100 comprises an outer fire cover 103, an inner fire cover 102 and a plurality of connecting spokes 101 which are annular, the inner fire cover 102 is sleeved in the outer fire cover 103 at radial intervals, the connecting spokes 101 are arranged at intervals along the circumferential direction and are respectively connected with the outer fire cover 103 and the inner fire cover 102, and a plurality of fire holes 104 are formed in the outer fire cover 103, the inner fire cover 102 and the connecting spokes 101. The existing fire cover is generally realized by arranging a plurality of rings of flames in order to improve the heating performance of even fire. The burner 1000 of the present application is provided with the connecting spokes 101 with the fire holes 104 between the inner fire cover 102 and the outer fire cover 103, and the gap position between two adjacent rings of flames is reasonably utilized, so that the burner 1000 not only forms two rings of flames on the inner fire cover 102 and the outer fire cover 103, but also forms flames at the gap position between the two rings of flames through the connecting spokes 101, so that the flames can be uniformly distributed on the whole fire plane, and the even-fire heating performance of the burner 1000 is effectively improved. In which the flames are not actually distributed along a plane, but are spatially distributed, so that the fire plane is understood to be the horizontal projection plane of the flames.
In addition, a plurality of fire holes 104 are formed in the outer fire cover 103, the inner fire cover 102 and the connecting spokes 101, the number of the fire holes 104 of the fire cover 100 is greatly increased, heat load can be fully released, and the improvement of the heat load of the combustor 1000 is facilitated; meanwhile, the flames of the web spokes 101 extend inward, which is beneficial to improving the overall efficiency of the burner 1000.
Wherein, a secondary air channel 105 can be formed between any two adjacent connecting spokes 101, the outer fire cover 103 and the inner fire cover 102, so that secondary air required for combustion can be supplemented upwards through the secondary air channel 105. The outer fire cover 103 and the inner fire cover 102 may be arranged concentrically and radially at intervals, that is, the center points of the outer fire cover 103 and the inner fire cover 102 are on the same vertical line, or the outer fire cover 103 and the inner fire cover 102 may not be arranged concentrically, that is, the center points of the outer fire cover 103 and the inner fire cover 102 may be partially offset and not on the same vertical line. The outer fire cover 103 and the inner fire cover 102 may be connected by a plurality of circumferentially spaced apart web spokes 101, for example, the outer fire cover 103 and the inner fire cover 102 may be connected by four, five, six or more circumferentially spaced apart web spokes 101.
In addition, the existing burner usually only ignites at a certain position on a ring fire cover, then flame slowly spreads along the circumferential direction in a circle, the flame spreading speed is slow, so that part of gas cannot be combusted in time, waste is caused, the environment of a kitchen is polluted, even the situation that the gas is not on spot due to large wind or liquid drops exists sometimes, and the use experience of a user is influenced. The utility model provides a combustor 1000's fire lid 100 is owing to be provided with a plurality of web spokes 101 along the circumference interval between outer fire lid 103 and interior fire lid 102 and connect, when the ignition, flame can propagate from a plurality of web spokes 101 simultaneously, has increased more ignition points on whole fire lid 100 in other words, thereby can reach the effect of lighting in the twinkling of an eye, greatly increased the speed of passing fire and the stability of ignition, and then also make user's use experience better. Moreover, the inner fire cover 102 and the outer fire cover 103 are integrated, so that the user can conveniently detach, wash and install the inner fire cover. Here, a position relatively close to the center of the burner 1000 is defined as "inner", and a position relatively far from the center of the burner 1000 is defined as "outer".
Because the quantity of primary mixed gas through holes and secondary air holes of the existing gas distribution plate is small, and correspondingly, the hole flow areas of the primary mixed gas through holes and the secondary air holes are large, the primary mixed gas and the secondary air respectively and correspondingly enter a combustion area through the primary mixed gas through holes and the secondary air holes and then diffuse back to the two sides of the holes to form a large vortex area, so that the air intake resistance of the primary mixed gas and the secondary air is increased, and the air intake amount is influenced. In addition, after air intake, the distribution of the primary mixed gas and the secondary air is uneven, which affects the mixing ratio, and thus, the combustion condition is deteriorated, which results in the decrease of the thermal efficiency and the failure of the standard of the smoke emission.
As shown in fig. 7 and 8, the annular disk peripheral wall 301 of the gas distribution disk 300 of the present application is provided with a plurality of primary mixed gas passing holes 302 arranged at intervals in the circumferential direction and penetrating in the axial direction and a plurality of secondary air holes 303 arranged at intervals in the circumferential direction and penetrating in the radial direction, and the outer annular cavity 1033 of the outer flame cover 103 is communicated with the plurality of primary mixed gas passing holes 302. Therefore, the secondary air and the primary mixed gas are distributed more uniformly, and the combustion efficiency is better; and the vortex effect that secondary air formed is also less, and the air inlet flow line is more even, and the air intake resistance reduces, and the flow resistance is little, and the air input will be more and then be favorable to improving the thermal efficiency and the heat load of combustor. Wherein, the primary mixed gas is the mixed gas of fuel gas and primary air. The number of the secondary air holes 303 is equal to or greater than 6, and may be, for example, 6, 8, 10, 16, or more.
The gas distributor 300 may be circular, rectangular, or other annular, and may be matched with the burner 200 and the burner cap 100 of the burner 1000. The shapes of the secondary air holes 303 and the primary mixture passage holes 302 may be various, for example, circular holes, raceway holes, or other shaped holes, and the present application is not limited thereto. As shown in fig. 7 and 8, the air distributor 300 has an annular shape, and the number of the secondary air holes 303 and the primary air mixture passage holes 302 is 20 each. The larger the number of the secondary air holes 303, the smaller the hole flow area of a single secondary air hole 303, the more uniform the distribution of the secondary air, the smaller the vortex effect formed by the secondary air, the more uniform the intake flow line, and the smaller the intake resistance and flow resistance.
Alternatively, when the area of the cross section of the secondary air hole 303 perpendicular to the self axial direction is less than or equal to 120mm2During combustion, the secondary air is distributed more uniformly, the formed vortex effect is smaller, the air inlet flow line is more uniform, the air inlet resistance and the flow resistance are smaller, the air inlet amount is increased, and the combustion efficiency is improved; the area of the cross section of the secondary air hole 303 perpendicular to the axial direction thereof may be set to 50mm or more2Thus, the sufficient air inflow and the air inflow fluency of the secondary air hole 303 can be ensured.
Alternatively, as shown in fig. 7 and 8, the secondary air hole 303 may be a circular hole, that is, the cross-sectional shape of the secondary air hole 303 perpendicular to the axial direction thereof may be a circle, so that the air distributor 300 is more convenient to process and the processing difficulty is reduced. Alternatively, the secondary air holes 303 may be waist-shaped holes (not shown in the drawings) and the parallel waist edges of the waist-shaped holes are arranged along the axial direction of the air distribution plate 300, that is, the cross-sectional shape of the secondary air holes 303 perpendicular to the axial direction thereof may be waist-shaped. When the area of the cross section of the secondary air hole 303 perpendicular to the self axial direction is fixed, if the axial size of the waist-shaped hole is increased, correspondingly, the circumferential size of the waist-shaped hole is reduced, so that more secondary air holes 303 can be arranged at intervals along the circumferential direction, the vortex effect of air intake is further weakened, the total air intake amount of secondary air is improved, and further the combustion efficiency can be improved.
Alternatively, the outer side surface of the annular disk peripheral wall 301 extends upward to form a top end annular peripheral wall 3011, the top end annular peripheral wall 3011 being for fixed mounting with the outer fire cover 100. As shown in fig. 7, the top edge of the top end annular peripheral wall 3011 is formed with an annular boss portion to be fitted in a position-limited manner with the fire lid 100.
In some embodiments, as shown in fig. 7 and 8, the number of the primary mixture through holes 302 may be greater than or equal to 10, and the secondary air holes 303 and the primary mixture through holes 30 are sequentially and alternately distributed in the circumferential direction. So, the quantity of a gas mixture via hole 302 is many, and correspondingly, the hole flow area of a single gas mixture via hole 302 reduces, and the vortex effect that a gas mixture via hole 302 formed is also less, and the admission flow line is more even, and the admission resistance reduces, and the flow resistance is little, and the air input will be more and then be favorable to improving the heat load of combustor. More importantly, the secondary air holes 303 and the primary mixed gas through holes 30 are sequentially and alternately distributed along the circumferential direction, so that the secondary air and the primary mixed gas are distributed more uniformly, and the combustion efficiency is better. The number of the first mixture passing holes 302 is greater than or equal to 10, and may be, for example, 10, 12, 15, or more. As shown in fig. 7 and 8, the number of the primary air mixture holes 302 and the secondary air holes 303 is 20 and are alternately distributed in sequence. The more the number of the primary mixed gas through holes 302 is, and correspondingly, the smaller the hole flow area of a single primary mixed gas through hole 302 is, the more uniform the distribution of the primary mixed gas is, the smaller the formed vortex effect is, the more uniform the gas inlet flow line is, and the smaller the gas inlet resistance and the flow resistance are.
Optionally, the area of the cross section of the primary mixture through hole 302 perpendicular to the self axial direction is less than or equal to 120mm2During the process, the distribution of the primary mixed gas is more uniform, the formed vortex effect is smaller, the gas inlet flow line is more uniform, the gas inlet resistance and the flow resistance are smaller, the gas inlet amount is increased, and the heat efficiency and the heat load are further improved; moreover, the area of the cross section of the primary mixed gas through hole 302 perpendicular to the self axial direction can be set to be more than or equal to 60mm2Thus, the sufficient air inflow and the air inflow fluency of the primary air mixture passing hole 302 can be ensured.
Optionally, the aperture width of the mixture via radial outer end 3021 of the primary mixture via 302 is greater than the aperture width of the mixture via radial inner end 3022 of the primary mixture via 302. As shown in fig. 7 and 8, the primary mixture passage hole 302 has a shape of a kidney-shaped hole having a large end and a small end. Thus, the primary mixed gas passing hole 302 is matched with the annular wall shape of the annular disk peripheral wall 301, the total intake area of the plurality of primary mixed gas passing holes 302 can be increased as much as possible, the total intake amount of the primary mixed gas is increased, and the heat load can be further increased.
In other embodiments, as shown in fig. 18 and 19, the plurality of secondary air holes 303 may be uniformly grouped in the circumferential direction to form a plurality of secondary air hole groups arranged at intervals in the circumferential direction and including at least two secondary air holes 303, the secondary air hole groups being sequentially alternately distributed with the primary mixed air hole holes 302 in the circumferential direction. Wherein, the plurality of secondary air holes 303 can be uniformly divided into 2 groups, 3 groups, 4 groups, 5 groups or more; the uniform grouping may be an equal number of groupings or an approximate number of groupings, i.e., the number of secondary air holes 303 in each secondary air hole set may be the same, or the number of secondary air holes 303 in multiple secondary air hole sets may differ by a small amount, such as by one or two, etc. The number of secondary air holes 303 in each secondary air hole group may be 2, 3, 4, 5, or more. As shown in fig. 18 and 19, the air distributor 300 is provided with 16 secondary air holes 303, and the 16 secondary air holes 303 are evenly grouped in the circumferential direction to form 4 secondary air hole groups including 4 secondary air holes 303 arranged at intervals in the circumferential direction. Compared with the gas distribution plate 300 of the embodiment shown in fig. 7 and 8, the gas distribution plate 300 of the embodiment has a reduced number of primary mixed gas passing holes, which facilitates the processing of the gas distribution plate 300 and better balances the optimization performance and the production cost of the gas distribution plate 300.
Alternatively, the tip outer edge and the tip inner edge of the annular disk peripheral wall 301 may be connected to the outer fire cover peripheral wall 1032 and the outer fire cover inner peripheral wall 1031 of the outer fire cover 103, respectively. As shown in fig. 18, the top end outer edge portion of the annular disk peripheral wall 301 extends upward to form a top end annular peripheral wall 3011, and the top edge and the top end inner edge portion of the top end annular peripheral wall 3011 are respectively formed with annular shelf portions to be fitted in a spacing manner with the outer fire cover outer peripheral wall 1032 and the outer fire cover inner peripheral wall 1031 of the fire cover 100.
Alternatively, the web spoke 101 may be hollow and cylindrical, and the cylindrical cavity of the web spoke 101 is the spoke cavity 1013, and the two cylindrical ends of the web spoke 101 are respectively connected to the outer fire cover 103 and the inner fire cover 102. The web spokes 101 may be hollow cylindrical, hollow square cylindrical, or other hollow irregular cylindrical shapes. As shown in fig. 6, the web spokes 101 have a hollow, substantially conical shape.
Alternatively, the web spokes 101 extend in the radial direction of the fire cover 100, so that the arrangement path of the web spokes 101 between the outer fire cover 103 and the inner fire cover 102 can be minimized, the flow resistance can be reduced, and the primary mixed gas in the outer annular chamber 1033 can more smoothly pass through the spoke chamber 1013 into the middle annular chamber 1025. In addition, the area of the cross section of the web spokes 101 perpendicular to the radial direction gradually decreases from the outside to the inside, so that the secondary air passage 105 can have a sufficient passage area, and further the secondary air can be better supplemented upwards.
Optionally, the web spoke 101 is provided with a spoke cavity 1013 and includes a spoke top wall defining the spoke cavity 1013, a spoke bottom wall, and two spoke side walls connected between the spoke top wall and the spoke bottom wall, the two spoke side walls are circumferentially spaced apart, the connection positions of the two spoke side walls and the spoke top wall are respectively formed with an inclined wall portion inclined upwards, and the two inclined wall portions are provided with a plurality of fire holes 104. The plurality of fire holes 104 in the two inclined wall portions communicate with the spoke cavities 1013 of the web spokes 101. As shown in fig. 5 and 16, the fire holes 104 on the two inclined wall parts are provided with opposite orientations in the circumferential direction on the web spokes 101, so that the fire outlet orientation angle of the fire cover 100 in the space is increased, the flame can be more uniformly dispersed in the whole space, the combustion efficiency is higher, and the heat load can be sufficiently released. In addition, the fire holes 104 are formed in the inclined wall portions of the web spokes 101, so that flames can be spread obliquely, thereby improving the ignition effect between the adjacent fire holes and igniting the adjacent fire holes in time when a misfire or poor flame propagation occurs.
Alternatively, as shown in fig. 5 and 16, the two inclined wall portions include a front-side inclined wall portion 1011 disposed clockwise toward the front and a rear-side inclined wall portion 1012 disposed clockwise toward the rear, the front-side inclined wall portion 1011 of the plurality of web spokes 101 or the rear-side inclined wall portion 1012 of the plurality of web spokes 101 is formed as a bent wall on which the plurality of fire holes 104 are arranged at intervals. As shown in fig. 5 and 16, the plurality of bent walls in the same direction can form a swirling flame effect, and flames with consistent fire-out swirling directions can generate a certain turbulent flow effect on a combustion area, so that the secondary air can be promoted to be uniformly distributed, and the combustion efficiency can be improved. In addition, the rotating flame effect formed by the bent walls in the same direction enables the flame to generate rotating motion feeling in vision, and the appearance is more attractive.
Alternatively, as shown in fig. 5 and 6, the outer fire cover 103 may include an outer fire cover peripheral wall 1032 and an outer fire cover inner peripheral wall 1031, the outer fire cover inner peripheral wall 1031 is disposed obliquely upward and inward and the plurality of fire holes 104 on the outer fire cover inner peripheral wall 1031 are arranged at intervals in the circumferential direction, the inner fire cover 102 includes an inner fire cover inner peripheral wall 1021 and an inner fire cover peripheral wall 1022, the inner fire cover inner peripheral wall 1021 is disposed obliquely upward and inward and the plurality of fire holes 104 on the inner fire cover inner peripheral wall 1021 are arranged at intervals in the circumferential direction, and the inner fire cover peripheral wall 1022 is disposed obliquely upward and outward and the plurality of fire holes 104 on the inner fire cover peripheral wall 1022 are arranged at intervals in the circumferential direction. As shown in fig. 5 to 16, the outer fire cover peripheral wall 1032 of the outer fire cover 103 is not provided with fire holes, and only the fire holes 104 are provided on the outer fire cover inner peripheral wall 1031, so that a flame gathering effect is produced, and flames are burned toward the center portion, and the heat efficiency is higher; meanwhile, the outer ring fire can be fired toward the inner bag pot, thereby improving the heating efficiency. The inner fire cover 102 is located at the center portion, and the inner peripheral wall 1021 and the outer peripheral wall 1022 of the inner fire cover may be provided with fire holes 104 to increase the number of the fire holes 104 as much as possible. Moreover, the inner peripheral wall 1031 of the outer fire cover, the inner peripheral wall 1021 of the inner fire cover and the outer peripheral wall 1022 of the inner fire cover are obliquely arranged, namely, the fire holes 104 are obliquely arranged towards fire, so that the uniformity of flame in the whole combustion space is more facilitated, the mixing of primary mixed gas and secondary air is facilitated, and the combustion efficiency is further improved.
Optionally, since the diameter of the outer fire cover 103 is large, in order to increase the cohesive effect of the outer fire cover 103, the acute included angle between the inner peripheral wall 1031 of the outer fire cover and the horizontal plane may be correspondingly increased, so that the inclination of the inner peripheral wall 1031 of the outer fire cover is increased; and the diameter of the inner fire cover 102 is small, in order to weaken the impact between the inner ring flames at the radial opposite positions of the inner fire cover 102 and each other, the acute included angle between the inner peripheral wall 1021 of the inner fire cover and the horizontal plane can be correspondingly reduced, so that the gradient of the inner peripheral wall 1021 of the inner fire cover is reduced. Therefore, since the diameter of the outer fire cover 103 is larger than that of the inner fire cover 102, the acute angle between the inner peripheral wall 1031 of the outer fire cover and the horizontal plane is larger than the acute angle between the inner peripheral wall 1021 of the inner fire cover and the horizontal plane. Moreover, the orientation angles of the three peripheral walls of the outer fire cover inner peripheral wall 1031, the inner fire cover inner peripheral wall 1021 and the inner fire cover outer peripheral wall 1022 are different, so that the fire outlet orientations of the fire holes 104 in the three peripheral walls are different in space, and further the arrangement of flames in the whole combustion space is more uniform.
Optionally, a plurality of fire holes 104 on the inner peripheral wall 1031 of the outer fire cover are arranged at intervals in the circumferential direction and at intervals in the height direction to form a plurality of outer fire hole rings; and/or the plurality of fire holes 104 on the outer peripheral wall 1022 of the inner fire cover are arranged at intervals along the circumferential direction and at intervals along the height direction to form a plurality of inner ring outer fire hole rings; and/or the plurality of fire holes 104 on the inner peripheral wall 1021 of the inner fire cover are arranged along the circumferential direction and are arranged at intervals along the height direction to form a plurality of inner ring inner fire hole rings. A plurality of outer fire hole rings are arranged on the inner peripheral wall 1031 of the outer fire cover at intervals along the height direction, and/or a plurality of inner fire hole rings are arranged on the outer peripheral wall 1022 of the inner fire cover at intervals along the height direction; and/or, the inner fire cover inner peripheral wall 1021 is provided with a plurality of inner ring inner fire hole rings at intervals along the height direction, so that the plurality of fire hole rings are arranged at different heights, the accumulation of flame at a certain height can be avoided, the flame can be combusted in a larger space, the secondary air can enter and mix more easily, and the combustion efficiency can be improved; in addition, the number of fire holes 104 can be increased by providing a plurality of fire hole rings, further increasing the thermal load of the burner. The fire holes between two adjacent fire hole rings can also be arranged in a staggered manner along the circumferential direction, so that the accumulation of flame at a certain circumferential position can be avoided.
Specifically, as shown in fig. 5, two outer fire hole rings are provided on the inner peripheral wall 1031 of the outer fire cover, two inner outer fire hole rings are provided on the outer peripheral wall 1022 of the inner fire cover, and one inner fire hole ring is provided on the inner peripheral wall 1021 of the inner fire cover. Of course, the present application is not limited thereto, and two, three, four or more fire hole rings may be provided on the outer fire cover inner peripheral wall 1031 and/or the inner fire cover outer peripheral wall 1022 and/or the inner fire cover inner peripheral wall 1021 according to actual use requirements; the height interval size between two adjacent fire hole rings can be the same or different, and can be reasonably set according to actual use requirements.
Further, the height of the top edge of the inner fire cover 102 can be lower than that of the top edge of the outer fire cover 103, so that the height positions of the fire holes 104 of the outer fire cover 103 and the fire holes 104 on the inner fire cover 102 in the vertical direction are at least partially staggered, the accumulation of flames of the outer fire cover 103 and the flames of the inner fire cover 102 in the same height position is avoided, the flames can be combusted in a larger space, secondary air in the space is more, the combustion efficiency is higher, and the heat load can be fully released. When the height of the top edge of the inner fire cover 102 is lower than that of the top edge of the outer fire cover 103, the height of the bottom edge of the outer fire cover 103 can be higher than, equal to or lower than that of the top edge of the inner fire cover 102. When the height of the bottom edge of the outer fire cover 103 is lower than that of the top edge of the inner fire cover 102, the height positions of the fire holes 104 on the outer fire cover 103 and the fire holes 104 on the inner fire cover 102 in the vertical direction may be partially overlapped.
Further, the height of the top edge of the inner fire cover 102 is lower than or equal to the height of the bottom edge of the inner peripheral wall 1031 of the outer fire cover, so that the height positions of the fire holes 104 on the outer fire cover 103 and the fire holes 104 on the inner fire cover 102 in the vertical direction can be completely staggered and overlapped. Moreover, the heights of the fire holes 104 on the outer fire cover 103, the fire holes 104 on the connecting spokes 101 and the fire holes 104 on the inner fire cover 102 are sequentially decreased progressively, so that the height positions of the fire holes 104 of the whole fire cover 100 in the vertical direction can be staggered and overlapped, flame is further combusted in a larger space, the accumulation of flame is avoided, secondary air can enter more easily, the combustion efficiency is higher, and heat load can be fully released.
Optionally, an annular partition wall 1023 is provided between the inner fire cover outer peripheral wall 1022 of the inner fire cover 102 and the inner fire cover inner peripheral wall 1021 of the inner fire cover 102 to partition the annular cavity of the inner fire cover 102 into an intermediate annular cavity 1025 and an inner annular cavity 1024, the inner fire cover outer peripheral wall 1022 and the partition wall 1023 together define the intermediate annular cavity 1025, and the inner fire cover inner peripheral wall 1021 and the partition wall 1023 together define the inner annular cavity 1024. As shown in fig. 5 and 6, the fire holes 104 of the outer peripheral wall 1022 of the inner fire cover communicate with the middle ring cavity 1025, and the fire holes 104 of the inner peripheral wall 1021 of the inner fire cover communicate with the inner ring cavity 1024. The middle ring cavity 1025 is arranged close to the inner ring cavity 1024, so that the inner fire cover 102 can form two rings of flames in the center of the fire cover 100, and further, the firepower is larger, the heat load is higher, and the flames are dispersed more uniformly. In addition, be equipped with outer ring chamber 1033 in the outer fire lid 103, the integrated setting in inner fire lid 102 including well ring chamber 1025 and inner ring chamber 1024, two ring fire lids form three ring chamber inside and outside promptly, not only structural succinct compacter, can also save sheet metal material, reduction in production cost.
Further, the spoke cavities 1013 of the web spokes 101 can communicate with the outer ring cavity 1033 of the outer flame cover 103, and a portion of the primary mixed gas in the outer ring cavity 1033 can be introduced into the spoke cavities 1013 relatively close to the combustion center region for combustion, thereby improving the overall combustion efficiency of the combustor. In addition, the outer ring cavity 1033 and the spoke cavities 1013 can share the primary mixed gas distribution air passage and the injection passage, namely, the primary mixed gas of the outer ring cavity 1033 and the spoke cavities 1013 can be supplied by the same gas nozzle and the same gas inlet passage, so that not only can synchronous regulation be realized, but also the whole flame surface synchronous regulation can be realized by matching with a simple valve regulation strategy, the control logic is simplified, and the production cost of the combustor is favorably reduced. Meanwhile, the plurality of web spokes 101 can increase the airflow passage of the burner 1000, which is beneficial to the uniform arrangement of the airflow and the stable combustion.
Further, the outer ring chamber 1033, the spoke chambers 1013, and the middle ring chamber 1025 can be sequentially communicated, so that the primary mixture gas of the outer ring chamber 1033 can be introduced into the middle ring chamber 1025 of the inner flame cover 102 near the combustion center region through the spoke chambers 1013 for combustion, further improving the overall combustion efficiency of the combustor. In addition, the fire cover 100 can form a three-ring flame only by supplying gas through the two injection pipes of the inner ring injection pipe 204 and the outer ring injection pipe 205 and the two gas nozzles of the inner ring gas nozzle and the outer ring gas nozzle, that is, the primary mixed gas of the outer ring cavity 1033, the spoke cavity 1013 and the middle ring cavity 1025 can be supplied through the same gas nozzle and the same gas inlet channel, so that synchronous regulation is further realized, and the valve regulation strategy and the control logic are simpler. Moreover, the three-ring gas supply of the combustor 1000 is realized under the condition that a nozzle and an injection pipe are not additionally arranged, so that the control logic and the structure are simplified, and the production cost of the combustor is greatly reduced. The plurality of spoke cavities 1013 are secondary channels of the outer 1033 and middle 1025 ring cavities that further facilitate uniform gas flow arrangement and stable combustion. Moreover, the outer and middle ring chambers 1033 and 1025 are connected by the plurality of spoke chambers 1013, which can reduce the pressure difference in different areas of the combustion space and reduce the back pressure, thereby more uniformly discharging the flame, and further improving the uniformity of combustion, so that the flame is more uniformly dispersed in the whole space.
In addition, the outer ring chamber 1033, the spoke chamber 1013 and the middle ring chamber 1025 can be sequentially communicated, when a user needs to cook with big fire, the more the fire is, the better the fire is, and the uniform fire property can be ensured while providing the big fire, at the moment, the inner ring is injected two injection pipes of the pipe 204 and the outer ring is injected two injection pipes and the inner ring gas nozzle and the outer ring gas nozzle are used for correspondingly supplying gas to the three ring chambers and the plurality of spoke chambers 1013, the outer ring chamber 1033, the spoke chamber 1013, the middle ring chamber 1025 and the inner ring chamber 1024 are used for correspondingly forming three-ring flames and a plurality of middle flames, it is ensured that the furnace end 200 has enough high heat load to cook with big fire, and the uniform fire property and the heat efficiency of the burner are better. When a user needs to cook with small fire, the fire is often expected to be as small as possible, at the moment, the outer ring gas nozzle does not supply gas to the outer ring cavity 1033 and the middle ring cavity 1025, namely, the flame corresponding to the outer ring cavity 1033 and the middle ring cavity 1025 is extinguished, and only the inner ring injection pipe 204 and the inner ring gas nozzle supply gas to the inner ring cavity 1024, so that only the inner ring cavity 1024 can form inner ring flame, and the small fire cooking is realized. And, because the setting of well ring chamber 1025 pressing close to inner ring chamber 1024, guaranteed the high thermal load and the even fire nature requirement of the inner ring combustion zone when big fire culinary art, so the inner ring gas nozzle of inside ring chamber 1024 air feed can do as little as possible to can provide littleer firepower when the small fire culinary art, satisfy the demand of the little fire culinary art of user's littleer firepower, user experience is better.
In addition, the fire cover 100 of the burner 1000 of the present application not only has good comprehensive performance, but also has a reasonable and simple structure, can be processed by a sheet metal part with a thinner thickness, and has a simple manufacturing process and a low manufacturing cost.
Optionally, the burner 1000 may further include a burner 200 disposed below the fire cover 100 and the gas distribution plate 300, and the fire cover 100 of the burner 1000 of the present application has good versatility and can be adapted to a plurality of different burners 200, which will be described below by way of example.
Burner 1000 of the first embodiment:
as shown in fig. 1 to 12, in the burner 1000 of the first embodiment, the fire cap 100 can be used with the burner head 200 having three distribution air passages, i.e., the outer ring distribution air passage 2031, the middle ring distribution air passage 2021, and the inner ring distribution air passage 2011, to form a three-ring flame. The middle ring distribution airway 2021 is located between the inner ring distribution airway 2011 and the outer ring distribution airway 2031. The bottom end surface of the gas distribution plate 30 covers the outer ring distribution air passage 2031, and the outer ring distribution air passage 2031 is communicated with the outer ring cavity 1033 through a plurality of primary mixed gas passing holes 302. The middle ring distribution air passage 2021 communicates with the middle ring cavity 1025, and the inner ring distribution air passage 2011 communicates with the inner ring cavity 1024. So, three distribution air flue of furnace end 200 can be corresponding to carry out stable air feed to the three ring chamber of fire lid 100, goes out the fire more reliable and more stable.
Optionally, as shown in fig. 12, the middle ring distribution air passage 2021 may be communicated with the outer ring distribution air passage 2031 through the middle and outer ring communication air passage 206, the furnace end 200 further includes an inner ring ejector pipe 204 and an outer ring ejector pipe 205, the inner ring ejector pipe 204 is communicated with the inner ring distribution air passage 2011, and the outer ring ejector pipe 205 is sequentially communicated with the outer ring distribution air passage 2031, the middle and outer ring communication air passage 206, and the middle ring distribution air passage 2021. Thus, the outer ring ejector pipe 205 supplies the primary mixed gas to the outer ring distribution gas passage 2031 and the inner ring distribution gas passage 2021 in sequence. Since the flame is closer to the central region of the burner for combustion, the thermal efficiency is higher, and the burner 200 of the present embodiment introduces the primary mixed gas of the outer ring distribution gas channel 2031 into the middle ring distribution gas channel 2021 relatively close to the central combustion region, which is beneficial to improving the overall combustion efficiency of the burner. And, the furnace end 200 of this embodiment only needs two to draw to penetrate the pipe and can form three ring fire for three distribution air flue air feed, not only can make furnace end 200's structure simpler, can also reduce the quantity that sets up of drawing production parts such as pipe and nozzle, has saved manufacturing cost greatly and the maintenance of the later stage of being more convenient for. In addition, the furnace end 200 of this embodiment only needs two to draw and penetrates the pipe and can give three distribution air flue air supplies, and valve regulation and control strategy and control logic also can be simpler.
In addition, well ring distribution air flue 2021 and outer loop distribution air flue 2031 intercommunication, when the user need carry out big fire culinary art, often expect that the firepower is better more and can guarantee even fire nature when providing big firepower, the inner ring draws and penetrates pipe 204 and outer loop and draws the corresponding air feed for three distribution air flue of pipe 205, inner ring distribution air flue 2011, well ring distribution air flue 2021 and outer loop distribution air flue 2031 correspond and can form three ring flame, guaranteed that furnace end 200 has enough high thermal load to carry out big fire culinary art, and the even fire nature and the thermal efficiency of three ring flame heating are better. When a user needs to cook with a small fire, the fire is often expected to be as small as possible, at the moment, the inner ring injection pipe 204 does not supply air to the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021, namely, the flame corresponding to the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 is extinguished, and only the inner ring injection pipe 204 supplies air to the inner ring distribution air passage 2011, so that only the inner ring distribution air passage 2011 can form inner ring flame, and the small fire cooking is realized. And, because the setting of well ring distribution air flue 2021 is pressed close to inner ring distribution air flue 2011, has guaranteed high thermal load and the even fire nature requirement in the inner ring burning zone when big fire cooks, so the inner ring gas nozzle of inner ring distribution air flue 2011 air feed can do for a short time as far as possible to can provide littleer firepower when the small fire cooks, satisfy the demand of the little fire culinary art of user's littleer firepower, user experience is better.
Alternatively, as shown in fig. 9, the burner 200 of the present embodiment may include an inner ring seat 201, an inner ring seat 202, and an outer ring seat 203, which are sequentially nested, the outer ring seat 203 may include an outer ring seat inner peripheral wall 2032, an outer ring seat outer peripheral wall 2033, and an outer ring seat bottom wall 2034 defining an outer ring distribution air passage 2031, the middle ring seat 202 may include a middle ring seat inner peripheral wall, a middle ring seat outer peripheral wall 2023, and a middle ring seat bottom wall 2022 defining a middle ring distribution air passage, and the inner ring seat 201 may include an inner ring seat inner peripheral wall 2012, an inner ring seat outer peripheral wall 2013, and an inner ring seat bottom wall 2015 defining an inner ring distribution air passage 2011.
The arrangement form and the arrangement position of the intermediate communication channel may be various, for example, the intermediate communication channel may be a curved channel, and both ends of the intermediate communication channel are respectively connected to the outer ring base wall 2034 and the inner ring base wall 2022 to correspondingly communicate with the outer ring distribution air passage 2031 and the inner ring distribution air passage 2021; alternatively, the intermediate communication passage may be a curved passage, and both ends of the intermediate communication passage are respectively connected to the outer ring seat bottom wall 2034 and the intermediate ring seat outer peripheral wall 2023 to be correspondingly communicated with the outer ring distribution air passage 2031 and the intermediate ring distribution air passage 2021, and the like. Alternatively, as shown in fig. 12, the middle communication channel may be a middle outer ring connecting air channel 206 extending in the radial direction and penetrating between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032, and the middle outer ring connecting air channel 206 is a straight channel, so that the structure of the burner 200 is simpler and more reasonable, and the middle outer ring connecting air channel 206 may be a straight channel to shorten the channel length and reduce the flow resistance as much as possible. In addition, the middle and outer ring connecting air ducts 206 in fig. 12 are only shown in one, but the application is not limited thereto, and the middle and outer ring connecting air ducts 206 may also be multiple and arranged between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 at intervals in the circumferential direction.
Further, as shown in fig. 9 and 12, the inner ring base outer peripheral wall 2013 and the middle ring base inner peripheral wall may be formed as a common middle inner ring common peripheral wall. Thus, the middle ring distribution air passage 2021 can be arranged closer to the inner ring distribution air passage 2011, the flame of the middle ring distribution air passage 2021 can be combusted closer to the central area, and the thermal efficiency is higher. And under the condition of ensuring the requirements of high heat load and uniform fire of the inner ring combustion area during big fire cooking, the inner ring gas nozzle can be made as small as possible, thereby providing smaller firepower during small fire cooking. In addition, the outer peripheral wall 2013 of the inner ring seat and the inner peripheral wall of the middle ring seat form a shared common peripheral wall of the middle ring, so that the wall body material of the furnace end can be reduced, the production cost of the furnace end is reduced, and the structure of the furnace end can be simpler and more compact.
Specifically, as shown in fig. 9 and 12, the inner ring seat 201 is sleeved in the outer ring seat 203, the middle ring seat 202 is sleeved between the outer ring seat 203 and the inner ring seat 201, and accordingly, the outer ring distribution air passage 2031, the middle ring distribution air passage 2021, and the inner ring distribution air passage 2011 are also sequentially sleeved from outside to inside. The distance between the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 is smaller than the distance between the middle ring distribution air passage 2021 and the outer ring distribution air passage 2031, the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 are adjacently arranged to be as close to the inner ring distribution air passage 2011 in the center as possible, so that the flame of the middle ring distribution air passage 2021 is combusted closer to the center region, and the thermal efficiency is higher. Moreover, the top surfaces of the outer ring base bottom wall 2034, the middle ring base bottom wall 2022 and the inner ring base bottom wall 2015 are all formed into inclined ramp surfaces along the airflow direction, which is favorable for reducing the flow resistance of primary mixed gas, the gas outlet is smoother, and the stability of flame combustion is better. Wherein, the primary mixed gas is the mixed gas of fuel gas and primary air.
Optionally, as shown in fig. 12, the outer ring ejection tube air outlet 2051 of the outer ring ejection tube 205 is fixed on the outer circumferential wall 2033 of the outer ring seat, and the middle and outer ring communication air passage 206 and the outer ring ejection tube 205 are both straight-tube-shaped and extend outward along the same radial direction, so that the length of the passage connecting the middle and outer ring communication air passages 206 is the shortest, and the flow resistance is smaller. Moreover, the communication channel gas inlet 2061 of the middle and outer ring connecting gas passage 206 is arranged on the inner peripheral wall 2032 of the outer ring base, the communication channel gas inlet 2061 is over against the outer ring injection pipe gas outlet 2051, and the area of the communication channel gas inlet 2061 is smaller than that of the outer ring injection pipe gas outlet 2051, so that the flow resistance of the primary mixed gas is smaller, and the primary mixed gas is more smoothly guided to the middle ring distribution gas passage 2021 to ensure that the middle ring distribution gas passage 2021 has enough gas supply amount.
Further, the inner ring injection pipe 204 may be a straight pipe, so that the flow resistance and the flow pressure loss of the inner ring injection pipe 24 may be reduced, and the burner 200 may be used for small-fire cooking with small fire and stable combustion.
Further, the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may extend in the radial direction and be arranged at intervals in the circumferential direction. Due to the existence of the middle and outer ring communicating air passage 206, if the inner and outer injection pipes of the existing furnace end are parallel and parallel, the inner ring injection pipe 24, the middle and outer ring communicating air passage 206 or the outer ring injection pipe 25 are partially required to be bent, so that the flow resistance of primary mixed gas is increased. Therefore, as shown in fig. 1 and 3, the outer ring ejection tube 205 and the inner ring ejection tube 204 of the embodiment are circumferentially fixed on the outer ring seat peripheral wall 2033 of the outer ring seat 203 at intervals, so that the arrangement of the middle and outer ring communication air passage 206 is more convenient, and the outer ring ejection tube 205 and the inner ring ejection tube 204 can be both arranged in a straight tube shape extending along the radial direction, so as to reduce the flow resistance, further stabilize the flame, and make the small flame smaller when cooking with small flame. As shown in fig. 1 and 3, the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may be arranged in a staggered manner at a right angle, but the present application is not limited thereto, and the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may be arranged in a staggered manner at an acute angle or an obtuse angle.
Optionally, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may not be longer than 15cm, which is beneficial to increase the sub-air injection coefficient of the inner ring injection pipe 204, improves the air intake amount, the mixing speed and the flow speed of the fuel gas and the air, reduces the intake pressure loss in a low-flame state, and ensures stable combustion in a low-flame condition. Further, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may be longer than 10cm, and further, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may be longer than 6 cm and shorter than 10 cm.
Because the central combustion area is provided with the inner ring distribution air passage 2011 and the middle ring distribution air passage 2021, the heat load of the central combustion area is greatly improved, more air needs to be supplemented to the central combustion area correspondingly, so that insufficient air supplement can be caused to deteriorate the combustion condition, and the heat efficiency is reduced and the smoke emission is not up to standard. Therefore, a channel for supplementing secondary air may be additionally provided to the burner 200.
Alternatively, a connecting top wall 207 may be provided between the top end peripheral edge of the middle ring base outer peripheral wall 2023 and the top end peripheral edge of the outer ring base inner peripheral wall 2032, and the connecting top wall 207 may be provided with a top wall vent (not shown) that axially penetrates therethrough. In this way, secondary air can be supplemented to the central combustion region axially and upwardly between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 through the top wall vent, so that the combustion of the central combustion region is more sufficient, the thermal efficiency is higher, and the emission of harmful gases can be reduced.
Optionally, the inner ring seat inner peripheral wall 2012 can encircle and be formed with the central blow vent (not shown in the figure) that the axial is link up, like this, accessible central blow vent upwards supplements the secondary air to central combustion area along the axial for central combustion area's burning is more abundant, and the emission of carbon monoxide is lower, and combustion efficiency is higher, and the gas is when the burning simultaneously, and central combustion area's air current is stable, thereby the burning is also stable, has solved the inner ring and has left flame flameout scheduling problem.
In addition, the burner 200 is further provided with an ignition needle receiving groove for receiving an ignition needle, as shown in fig. 3, the ignition needle receiving groove may be disposed in the central vent. The utility model provides a furnace end 200 is compact rational in infrastructure, and the volume is less, and it is little to occupy the kitchen space, is favorable to promoting to the user in little room.
In addition, because the outer ring cavity 1033, the spoke cavity 1013 and the middle ring cavity 1025 of the fire cover 100 are sequentially communicated, the outer ring distribution airway 2031, the middle outer ring connecting airway 206 and the middle ring distribution airway 2021 of the burner 200 are sequentially communicated, the outer ring distribution airway 2031 is communicated with the outer ring cavity 1033, and the middle outer ring connecting airway 206 is communicated with the middle ring cavity 1025, that is, the outer ring distribution airway 2031, the middle outer ring connecting airway 206, the middle ring distribution airway 2021, the middle ring cavity 1025, the spoke cavity 1013 and the outer ring cavity 1033 are sequentially communicated end to end, thus, an upper communication channel and a lower communication channel are arranged between the outer ring cavity 1033 and the middle ring cavity 1025, the negative pressure for communication between the outer ring cavity 1033 and the middle ring cavity 1025 is greatly reduced, the pressure difference between the two channels is smaller, primary mixed gas can be more uniformly distributed between the outer ring cavity 1033 and the middle ring cavity 1025, and the fire of the burner 1000 is more uniform and more stable, and the fire is more uniform.
Specifically, as shown in fig. 1 to 12, the burner 1000 of the first embodiment may include a burner 200, a gas distribution plate 300, a middle inner ring gas distribution plate part 500, and a fire cover 100. The fire cover 100 of the burner 1000 of the first embodiment includes an outer ring chamber 1033, spoke chambers 1013, an intermediate ring chamber 1025, and an inner ring chamber 1024, and the outer ring chamber 1033, the spoke chambers 1013, and the intermediate ring chamber 1025 are in communication in this order. The outer fire cover 103 of the fire cover 100 is covered on the gas distribution plate 300, and the outer ring cavity 1033 of the outer fire cover 103 is communicated with the plurality of primary mixed gas through holes 302. The burner 200 is provided with an inner ring distribution air passage 2011, a middle ring distribution air passage 2021 and an outer ring distribution air passage 2031, the inner ring distribution air passage 2011 is arranged in the inner ring seat 201 and communicated with the inner ring injection pipe 204, the middle ring distribution air passage 2021 is arranged in the middle ring seat 202 and communicated with the outer ring distribution air passage 2031 through the middle and outer ring communication air passage 206, and the outer ring distribution air passage 2031 is arranged in the outer ring seat 203 and communicated with the outer ring injection pipe 205. The air distributor 300 is disposed on the outer ring seat 203 and covers the upper opening of the outer ring distribution air passage 2031, and the plurality of primary mixed air passing holes 302 are communicated with the outer ring distribution air passage 2031. The middle inner ring gas distribution plate part 500 is connected above the inner ring seat 201 and the middle ring seat 202 and below the inner fire cover 102, that is, the inner fire cover 102 is connected to the inner ring seat 201 and the middle ring seat 202 of the burner 200 through the middle inner ring gas distribution plate part 500. The middle inner ring gas distribution disc component 500 is provided with a middle ring primary mixed gas through hole and an inner ring primary mixed gas through hole which are axially communicated, the lower opening of the inner ring cavity 1024 is communicated with an inner ring distribution air passage 2011 of the burner 200 through the inner ring primary mixed gas through hole of the middle inner ring gas distribution disc component 500, and the lower opening of the middle ring cavity 1025 is communicated with a middle ring distribution air passage 2021 of the burner 200 through the middle ring primary mixed gas through hole of the middle inner ring gas distribution disc component 500.
In the burner 1000 of the first embodiment, the flow path of the primary mixed gas of the outer ring ejector pipe 205 is: the primary mixed gas of the outer ring injection pipe 205 enters the outer ring distribution airway 2031 from the outer ring injection pipe gas outlet 2051, and part of the primary mixed gas entering the outer ring distribution airway 2031 flows into the channels on the left and right sides of the outer ring distribution airway 2031 and upwards uniformly enters the outer ring cavity 1033 of the fire cover 100 through the plurality of primary mixed gas through holes 302 of the gas distribution plate 300. A portion of the primary mixed gas entering the outer annular chamber 1033 is discharged through the fire holes 104 of the outer fire cover 103 and combusted, and another portion of the primary mixed gas entering the outer annular chamber 1033 can sequentially enter the spoke chambers 1013 of the connecting spokes 101 and the middle annular chamber 1025 of the inner fire cover 102 and be discharged through the connecting spokes 101 and the fire holes 104 of the inner fire cover peripheral wall 1022 and combusted. Another part of the primary mixed gas entering the outer ring distribution gas passage 2031 flows to the middle ring distribution gas passage 2021 through the middle outer ring connecting gas passage 206 and upwards enters the middle ring cavity 1025 of the inner fire cover 102, the part of the primary mixed gas entering the middle ring cavity 1025 is discharged through the fire holes 104 on the outer peripheral wall 1022 of the inner fire cover and is combusted, and another part of the primary mixed gas entering the middle ring cavity 1025 can enter the spoke cavities 1013 of the connecting spokes 101 and the outer ring cavity 1033 of the outer fire cover 103 in sequence and is discharged through the connecting spokes 101 and the fire holes 104 on the outer fire cover 103 and is combusted.
Flow path of primary mixed gas of the inner ring injection pipe 204: the primary mixed gas of the inner ring injection pipe 204 flows to the inner ring distribution air passage 2011 and upwards enters the inner ring cavity 1024 of the inner fire cover 102, and the primary mixed gas entering the inner ring cavity 1024 is discharged through the fire holes 104 on the inner peripheral wall 1021 of the inner fire cover and is combusted.
Burner 1000 of the second embodiment:
as shown in fig. 13 to 24, the burner 200 in the burner 1000 of the second embodiment is added with the air duct cover 208 on the basis of the burner 200 in the burner 1000 of the first embodiment, the inner ring air duct cover 208 is detachably disposed above the middle ring base 202 and covers the upper opening of the middle ring distribution air duct 2021, and the air duct cover 208 is provided with the inner ring air duct air outlet 2081 penetrating and communicating with the inner ring distribution air duct 2011. Therefore, the upper opening of the middle ring distribution air passage 2021 is covered by the air passage cover 208, so that the burner 200 with three distribution air passages is changed into a burner with two distribution air passages for use, and the universality and the performance expansibility of the burner 200 are better.
In the burner 1000 of the second embodiment, the fire cap 100 can be used in cooperation with the burner 200 provided with three distribution air passages, i.e., the outer ring distribution air passage 2031, the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011, to form a three-ring flame. The burner 200 includes an inner ring injection pipe 204, an outer ring injection pipe 205, an inner ring seat 201, a middle ring seat 202, an outer ring seat 203 and an air duct cover 208, wherein the inner ring seat 201, the middle ring seat 202 and the outer ring seat 203 are sequentially sleeved from inside to outside. The inner ring distribution air passage 2011 is arranged in the inner ring seat 201 and communicated with the inner ring injection pipe 204; the outer ring distribution air passage 2031 is arranged in the outer ring seat 203 and is communicated with the outer ring injection pipe 205, the middle ring distribution air passage 2021 is arranged in the middle ring seat 202 and is communicated with the outer ring distribution air passage 2031 through the middle and outer ring communication air passage 206; the air duct cover 208 is disposed above the inner ring seat 201 and the middle ring seat 202.
Specifically, as shown in fig. 13 to 24, the burner 1000 of the second embodiment may include a burner 200, a gas distribution plate 300, and a fire cover 100. The fire cover 100 of the burner 1000 of the second embodiment includes an outer ring chamber 1033, spoke chambers 1013, an intermediate ring chamber 1025, and an inner ring chamber 1024, and the outer ring chamber 1033, the spoke chambers 1013, and the intermediate ring chamber 1025 are in communication in this order. The outer fire cover 103 of the fire cover 100 is covered on the gas distribution plate 300, and the outer ring cavity 1033 of the outer fire cover 103 is communicated with the plurality of primary mixed gas through holes 302. The burner 200 is provided with an inner ring distribution air passage 2011, a middle ring distribution air passage 2021 and an outer ring distribution air passage 2031, the inner ring distribution air passage 2011 is arranged in the inner ring seat 201 and communicated with the inner ring injection pipe 204, the middle ring distribution air passage 2021 is arranged in the middle ring seat 202 and communicated with the outer ring distribution air passage 2031 through the middle and outer ring communication air passage 206, the outer ring distribution air passage 2031 is arranged in the outer ring seat 203 and communicated with the outer ring injection pipe 205, and the air passage cover 208 is arranged on the middle ring seat 202 and covers the upper opening of the middle ring distribution air passage 2021. The air distributor 300 is disposed on the outer ring seat 203 and covers the upper opening of the outer ring distribution air passage 2031, and the plurality of primary mixed air passing holes 302 are communicated with the outer ring distribution air passage 2031. The inner fire cover 102 is connected to the inner ring base 201 and the middle ring base 202 of the burner 200 and the lower part of the inner ring cavity 1024 is open to communicate with the inner ring distribution air passage 2011 of the burner 200.
In the burner 1000 of the second embodiment, since the middle ring cavity 1025 of the inner fire cover 102 is not communicated with the distribution air channel of the burner 200, the inner fire cover 102 further includes an inner fire cover bottom wall 1026 covering the lower opening of the middle ring cavity 1025, so that the leakage of the primary mixed gas of the middle ring cavity 1025 from the lower opening of the middle ring cavity 1025 can be avoided. In addition, in order to reduce the small flame of the burner 1000, the gas nozzle of the inner ring is made as small as possible, and the amount of supplied gas is small. At this time, in order to make the primary mixed gas supplied to the inner ring cavity 1024 of the inner fire cover 102 more uniform and stable, and the combustion rate is better, as shown in fig. 17, the inner fire cover bottom wall 1026 of the inner fire cover 102 further covers the annular lower opening of the inner ring cavity 1024, and the inner fire cover bottom wall 1026 is further provided with an inner ring air passage air inlet 10261 which is communicated with the inner ring cavity 1024 and has a relatively reduced air inlet cross-sectional area, correspondingly, the air passage cover body 208 further extends inward to be arranged on the inner ring seat 201 and covers the upper opening of the inner ring distribution air passage 2011, the air passage cover body 208 is provided with an inner ring air passage air outlet 2081 which is axially communicated, and the inner ring distribution air passage 2011 is communicated with the inner ring cavity 1024 through the inner ring air passage air outlet 2081. That is, while the inner fire cover 102 is coupled to the inner ring seat 201 and the middle ring seat 202 of the burner 200, the inner ring air path outlet 2081 communicates with the inner ring air path inlet 10261 to supply air to the inner ring chamber 1024. As shown in fig. 20 and 22 to 24, the air duct cover body 208 is disc-shaped and is fittingly covered on the middle ring seat 202 and the inner ring seat 201 to cover the inner ring distribution air duct 2011 and the middle ring distribution air duct 2021, and two pairs of the inner ring air duct air outlets 2081 are symmetrically arranged on the air duct cover body 208 and are communicated with the inner ring distribution air duct 2011. Of course, the air duct cover body 208 may also be, for example, in an oval shape, the inner ring air duct air outlets 2081 may also be three, four, or five, and the like, and the plurality of inner ring air duct air outlets 2081 may be arranged on the air duct cover body 208 at even intervals along the circumferential direction and communicate with the inner ring distribution air duct 2011, which is not limited thereto. A thermocouple outlet hole and an ignition pin outlet hole may be formed at the middle portion of the gas duct cover body 208.
In addition, as shown in fig. 20, 22 to 24, the rim portion of the inner annular air duct air outlet 2081 may extend upward from the air duct cover body 208 to form an insertion convex portion 2082, and the rim portion of the inner annular air duct air inlet 10261 may extend downward from the inner fire cover bottom wall 1026 to form an insertion groove portion surrounding the inner annular air duct air inlet 10261, so that the insertion convex portion 2082 of the air duct cover body 208 may be inserted into the insertion groove portion of the inner fire cover bottom wall 1026 to form a limit mounting structure, thereby enhancing the connection reliability of the fire cover 100 and the burner 200; also, the middle inner ring gas panel part 500 between the inner fire cover 102 and the inner ring seat 201 and the middle ring seat 202 may be omitted at this time.
Among them, in the burner 1000 of the second embodiment, the flow path of the primary mixed gas of the outer ring ejector pipe 205 is: the primary mixed gas of the outer ring injection pipe 205 enters the outer ring distribution airway 2031 from the outer ring injection pipe gas outlet 2051, and the primary mixed gas entering the outer ring distribution airway 2031 flows into the channels on the left and right sides of the outer ring distribution airway 2031 and upwards uniformly enters the outer ring cavity 1033 of the fire cover 100 through the plurality of primary mixed gas through holes 302 of the gas distribution plate 300. A portion of the primary mixed gas entering the outer annular chamber 1033 is discharged through the fire holes 104 of the outer fire cover 103 and combusted, and another portion of the primary mixed gas entering the outer annular chamber 1033 can sequentially enter the spoke chambers 1013 of the connecting spokes 101 and the middle annular chamber 1025 of the inner fire cover 102 and be discharged through the connecting spokes 101 and the fire holes 104 of the inner fire cover peripheral wall 1022 and combusted.
Flow path of primary mixed gas of the inner ring injection pipe 204: the primary mixed gas of the inner ring injection pipe 204 flows to the inner ring distribution air passage 2011 and upwards enters the inner ring cavity 1024 of the inner fire cover 102, and the primary mixed gas entering the inner ring cavity 1024 is discharged through the fire holes 104 on the inner peripheral wall 1021 of the inner fire cover and is combusted.
As can be seen from comparing the burner 1000 of the first embodiment with the burner 1000 of the second embodiment, the burner 200 of the burner 1000 of the second embodiment is different from the burner 200 of the burner 1000 of the first embodiment only in that the air duct cover 208 is added to close the upper opening of the distribution air duct 2021, i.e. the manufacturer can use the burner 200 with three distribution air ducts in different models of products, and the versatility and performance expansibility of the burner 200 with three distribution air ducts are increased. For example, the burner 200 without three distribution air passages with the air passage cover 208 can be increased by appropriately increasing the gas nozzle of the outer ring injection pipe 205 to provide a burner with higher heat load; or, the burner 200 with three distribution air passages provided with the air passage cover 208 can close the upper opening of the middle ring distribution air passage 2021 to provide another burner with moderate heat load, and at this time, the gas nozzle of the outer ring ejector pipe 205 can be properly reduced.
Optionally, a sealing structure may be disposed between the gas duct cover 208 and the inner ring base 201 and/or between the gas duct cover 208 and the outer ring base 203, so as to prevent the primary mixed gas from leaking out from a gap between the gas duct cover 208 and the burner 200. Namely, a sealing structure can be arranged between the air channel cover body 208 and the inner ring seat 201; alternatively, a sealing structure may be provided between the air duct cover 208 and the outer ring seat 203; alternatively, a sealing structure may be provided between the air duct cover body 208 and the inner ring seat 201, and a sealing structure may be provided between the air duct cover body 208 and the outer ring seat 203. The sealing structure may be various, such as a socket sealing structure, a screwing sealing structure, and the like, but the present application is not limited thereto.
Alternatively, the inner ring base 201 may include an inner ring base inner peripheral wall 2012 defining the inner ring distribution air passage 2011 and an inner ring base outer peripheral wall 2013, the sealing structure is a bayonet groove sealing structure and includes a first annular bayonet groove 2083 and a first annular bayonet wall 2084 bayonet-connected in the first annular bayonet groove 2083, one of the first annular bayonet groove 2083 and the first annular bayonet wall 2084 is formed on the inner ring base inner peripheral wall 2012 and the inner ring base outer peripheral wall 2013, and the other of the first annular bayonet groove 2083 and the first annular bayonet wall 2084 is formed on the bottom surface of the air passage cover body 208. The sealing structure is reasonable and simple, is convenient to manufacture, and is beneficial to reducing the manufacturing cost. As shown in fig. 20 and fig. 22 to fig. 24, an insertion groove sealing structure is formed between the air duct cover body 208 and the inner ring base 201, the bottom surface of the air duct cover body 208 extends downward to form two first annular insertion walls 2084, the outer top end of the inner circumferential wall 2012 of the inner ring base and the inner top end of the outer circumferential wall 2013 of the inner ring base are recessed downward to form first annular insertion grooves 2083, and the two first annular insertion walls 2084 of the air duct cover body 208 are correspondingly inserted into the two first annular insertion grooves 2083, so that the primary mixed gas can be prevented from leaking from the gap between the air duct cover body 208 and the inner ring base 201.
Alternatively, the middle ring seat 202 may include a middle ring seat inner peripheral wall and a middle ring seat outer peripheral wall 2023 defining the middle ring distribution air passage 2021, the sealing structure is a plug-in groove sealing structure and includes a second annular plug-in groove 2085 and a second annular plug-in wall 2086 plugged in the second annular plug-in groove 2085, one of the second annular plug-in groove 2085 and the second annular plug-in wall 2086 is formed on the middle ring seat outer peripheral wall 2023, and the other of the second annular plug-in groove 2085 and the second annular plug-in wall 2086 is formed on the outer peripheral portion of the air passage cover 208. The sealing structure is reasonable and simple, is convenient to manufacture, and is beneficial to reducing the manufacturing cost. As shown in fig. 20 and fig. 22 to fig. 24, the outer periphery of the air duct cover 208 may extend outward to form a second annular insertion wall 2086, the top end of the inner side of the middle ring seat outer peripheral wall 2023 is recessed downward to form a second annular insertion groove 2085, and the second annular insertion wall 2086 of the air duct cover 208 is correspondingly inserted into the second annular insertion wall 2086 of the middle ring seat outer peripheral wall 2023, so as to prevent the primary mixed gas from leaking out from the gap between the air duct cover 208 and the middle ring seat 202.
Burner 1000 of the third embodiment:
as shown in fig. 25 to 28, in the burner 1000 of the third embodiment, the fire lid 100 in the burner 1000 of the third embodiment has the same structure as the fire lid 100 in the burner 1000 of the second embodiment, and an inner fire lid bottom wall 1026 provided with an inner ring air duct air inlet 10261 is added to the fire lid 100 in the burner 1000 of the first embodiment, and the inner fire lid bottom wall 1026 covers the lower opening of the inner ring cavity 1025. In this manner, the burner cap 100 can be used with a burner 200 having only two distribution ports, an outer ring distribution port 2031 and an inner ring distribution port 2011, to form a three-ring flame. The burner 200 includes an inner ring injection pipe 204, an outer ring injection pipe 205, an inner ring seat 201, and an outer ring seat 203. An inner ring distribution air passage 2011 is arranged in the inner ring seat 201, the inner ring distribution air passage 2011 is communicated with the inner ring injection pipe 204, the outer ring seat 203 is sleeved outside the inner ring seat 201 and internally provided with an outer ring distribution air passage 2031, and the outer ring distribution air passage 2031 is communicated with the outer ring injection pipe 205.
Specifically, as shown in fig. 25 to 28, the burner 1000 of the third embodiment may include a burner 200, a gas distribution plate 300, and a fire cover 100 arranged from bottom to top. The fire cover 100 of the burner 1000 of the third embodiment includes an outer ring chamber 1033, spoke chambers 1013, an intermediate ring chamber 1025, and an inner ring chamber 1024, and the outer ring chamber 1033, the spoke chambers 1013, and the intermediate ring chamber 1025 are in communication in this order. The outer fire cover 103 of the fire cover 100 is covered on the gas distribution plate 300, and the outer ring cavity 1033 of the outer fire cover 103 is communicated with the plurality of primary mixed gas through holes 302. The burner 200 is only provided with an inner ring distribution airway 2011 and an outer ring distribution airway 2031, the inner ring distribution airway 2011 is arranged in the inner ring seat 201 and communicated with the inner ring injection pipe 204, and the outer ring distribution airway 2031 is arranged in the outer ring seat 203 and communicated with the outer ring injection pipe 205. The air distributor 300 is disposed on the outer ring seat 203 and covers the upper opening of the outer ring distribution air passage 2031, and the plurality of primary mixed air passing holes 302 are communicated with the outer ring distribution air passage 2031. The inner fire cover 102 of the fire cover 100 is connected to the inner ring base 201 of the burner 200 and the lower portion of the inner ring cavity 1024 is open to communicate with the inner ring distribution air passage 2011 of the burner 200.
In the burner 1000 of the third embodiment, since the middle ring cavity 1025 of the inner fire cover 102 is not communicated with the distribution air channel of the burner 200, the inner fire cover 102 further includes an inner fire cover bottom wall 1026 covering the lower opening of the middle ring cavity 1025, so that the leakage of the primary mixed gas of the middle ring cavity 1025 from the lower opening of the middle ring cavity 1025 can be prevented.
In addition, in order to make the small flame of the burner 1000 smaller, the gas nozzle of the inner injection pipe 204 can be made as small as possible, and the amount of supplied gas can be reduced. At this time, in order to make the primary mixed gas supplied to the inner ring cavity 1024 of the inner fire cover 102 more uniform and stable and to make the combustion rate better, as shown in fig. 28, the inner fire cover bottom wall 1026 of the inner fire cover 102 further covers the annular lower opening of the inner ring cavity 1024, and the inner fire cover bottom wall 1026 is further provided with an inner ring air passage air inlet 10261 which is communicated with the inner ring cavity 1024 and has a relatively reduced air inlet cross-sectional area, correspondingly, the inner ring seat 201 of the burner 200 may be provided with an inner ring distribution air passage cover plate 209, the inner ring distribution air passage cover plate 209 may be provided with a through air passage air outlet 2091, and when the inner fire cover 102 is connected to the inner ring seat 201 of the burner 200, the air passage air outlet 2091 is communicated with the inner ring air passage air inlet 10261 to supply air to the inner ring cavity 1024.
Furthermore, as shown in fig. 27 and 28, the rim of the air outlet 2091 may protrude upward from the inner ring air distribution duct cover plate 209 to form a cover plate insertion protrusion, and the rim of the inner ring air inlet 10261 may protrude downward from the inner fire cover bottom wall 1026 to form an insertion groove portion surrounding the inner ring air inlet 10261, so that the insertion protrusion of the inner ring air distribution duct cover plate 209 may be inserted into the insertion groove portion of the inner fire cover bottom wall 1026 to form a limit mounting structure, thereby enhancing the connection reliability of the fire cover 100 and the burner 200; also, the inner vent disc part between the inner fire cover 102 and the inner ring seat 201 may be omitted at this time.
Optionally, the interface of the outer ring ejector pipe 205 is located at the bottom of the outer ring seat 203, the outer ring ejector pipe 205 is communicated with the outer ring distribution air passage 2031 along the tangential direction, the interface of the inner ring ejector pipe 204 is located at the bottom of the inner ring seat 201, the inner ring ejector pipe 204 is communicated with the inner ring distribution air passage 2011 along the tangential direction, and the outer ring ejector pipe 205 and the inner ring ejector pipe 204 are arranged in parallel at intervals. The top surface of outer ring seat bottom wall 2034 of outer ring seat 203 and the inner ring seat bottom wall 2015 of inner ring seat 201 all forms to climb domatic along the slope of air current direction, is favorable to reducing the flow resistance of a gas mixture, gives vent to anger more smoothly, and flame combustion's stability is better.
In the burner 1000 of the third embodiment, the flow path of the primary mixed gas of the outer ring injection pipe 205 is: the primary mixed gas in the outer ring injection pipe 205 enters the outer ring distribution air passage 2031 from the outer ring injection pipe air outlet 2051, and the primary mixed gas entering the outer ring distribution air passage 2031 uniformly enters the outer ring cavity 1033 of the fire cover 100 through the plurality of primary mixed gas through holes 302 of the gas distribution plate 300. A portion of the primary mixed gas entering the outer annular chamber 1033 is discharged through the fire holes 104 of the outer fire cover 103 and combusted, and another portion of the primary mixed gas entering the outer annular chamber 1033 can sequentially enter the spoke chambers 1013 of the connecting spokes 101 and the middle annular chamber 1025 of the inner fire cover 102 and be discharged through the connecting spokes 101 and the fire holes 104 of the inner fire cover peripheral wall 1022 and combusted.
Flow path of primary mixed gas of the inner ring injection pipe 204: the primary mixed gas in the inner ring injection pipe 204 enters the inner ring distribution air flue 2011 from the air outlet of the inner ring injection pipe, the primary mixed gas entering the inner ring distribution air flue 2011 flows to the inner ring cavity 1024 of the inner fire cover 102 sequentially through the air flue air outlet 2091 of the inner ring distribution air flue cover plate 209 and the inner ring air flue air inlet 10261 of the inner fire cover bottom wall 1026, and the primary mixed gas entering the inner ring cavity 1024 is discharged through the fire holes 104 in the inner peripheral wall 1021 of the inner fire cover and is combusted.
It should be noted that the fire cover 100 of the combustor 1000 of this application can adapt to multiple different furnace ends and use, that is, the furnace end 200 of the combustor 1000 of this application can also correspond to the furnace end of three distribution air flues air feed etc. for three injection pipes except for the furnace end of the above three embodiments, and this application is not limited thereto.
Optionally, the burner 1000 of the present application may further include a pan support 400 sleeved outside the fire cover 100 and the gas distribution plate 300. As shown in fig. 29 to 32, the pan support 400 includes an annular energy collecting disk 401, a support portion, and a plurality of heat return fins 403. The support part is arranged on the energy-gathering disc and used for supporting the cookware, the annular energy-gathering disc 401 can separate high-temperature flame from the external environment, the influence of external low-temperature airflow on the flame and the loss of combustion heat are reduced, and meanwhile, hot gas can stay on the heat exchange surface at the bottom of the cookware for a longer time, so that the heat exchange efficiency is improved, and the overall heat efficiency of the combustor is improved. Because the intake passage of the combustion area is formed between the pan support 400 and the panel, a plurality of backheating fins 403 are arranged on the pan bottom surface of the energy collecting pan 401 and are arranged at intervals along the circumferential direction, a secondary air backheating passage 406 is formed between any two backheating fins 403, and secondary air can be heated by the backheating fins when passing through the secondary air backheating passage 406, so that the secondary air is preheated, and then the heat on the backheating fins is brought back to the combustion area to improve the heat efficiency of the system. Wherein the secondary air passes through the secondary air regenerative channel 406, the plurality of secondary air holes 302 of the air distributor 300, and the secondary air channel 105 of the fire cover 100 in sequence to uniformly enter the combustion area.
Specifically, as shown in fig. 29 and 30, the energy collecting disc 401 is in the shape of a circular ring cover, and a circular central combustion through hole is formed in the center; the energy gathering disc 401 can also be in a rectangular ring cover shape or other shapes, and the central combustion through hole can also be a square hole or other irregularly-shaped holes; the shape of the plurality of heat return fins 403 can be various, and the number can be set according to the actual application requirement; the energy concentrating disks 401 may be a single layer, two layers, three or more layers of insulation, and the application is not limited thereto.
Alternatively, the recuperative fins 403 may be planar sheets or curved sheets. As shown in fig. 29 and 30, the plurality of regeneration fins 403 may be formed in a planar sheet shape and all extend in the radial direction, so that the flow resistance of the secondary air is small, and the secondary air can rapidly and smoothly enter the combustion region through the secondary air regeneration channel 406. Alternatively, the plurality of heat recovery fins 403 may be planar and arranged obliquely to the radial direction, and the obliquely arranged plurality of heat recovery fins 403 may be arranged in a vortex shape; or, a plurality of backheating fins 403 can all be crooked slice and be the swirl and arrange, and a plurality of backheating fins 403 are the swirl and arrange not only can increase secondary air's the route of admitting air and increase backheating fins 403 and secondary air's heat transfer area, improve heat exchange efficiency, still can make the secondary air of being absorbed in by the book form the vortex of circling round, and the vortex of circling round makes gas and secondary air mix effectively, and consequently the gas can obtain the abundant burning, has promoted the combustion rate greatly.
Alternatively, as shown in fig. 29 and 30, the holder portion includes a plurality of holder legs 402, and the plurality of holder legs 402 are provided on the disc top surface of the energy collecting disc 401 and arranged at intervals in the circumferential direction. The top edge of the support leg 402 can be parallel to the horizontal plane, so that the contact area with the bottom surface of the cooker can be increased, the support leg 402 and the cooker are prevented from moving and slipping, and the cooker can be stably supported on the support leg 402, and is safer and more reliable. Of course, the support part may be, for example, a cylindrical frame or other support connected to the energy collecting plate, besides the plurality of support legs 402; the top surface of the energy collecting disc 401 is provided with four support legs 402 at intervals along the circumferential direction, the support legs 402 are flat, the number of the support legs 402 can be three, five or more, and the like, and the shape of the support legs 402 can be various, such as a V-shaped plate, an i-shaped plate or other irregular shapes.
Further, as shown in fig. 32, an intermediate reinforcing fin 404 may be connected between any two adjacent regenerative fins 403, so that the heat exchange area between the fins and the secondary air can be increased, the heat exchange efficiency is further improved, and a turbulent flow effect on the secondary air can be increased in each secondary air regenerative channel 406, so that the secondary air can exchange heat with the fins more sufficiently. The shape and arrangement of the intermediate reinforcing fins 404 may be various, for example, the intermediate reinforcing fins 404 may be S-shaped fins or fins with other shapes, and one intermediate reinforcing fin 404 may be connected between any two adjacent regenerative fins 403, and two, three or more intermediate reinforcing fins 404 may also be connected.
Alternatively, as shown in fig. 32, the intermediate reinforcing fin 404 may be T-shaped and include a wing plate piece 4041 and a web plate piece 4042. The wing plate pieces 4041 are arranged along the horizontal direction, and both ends of the wing plate pieces 4041 are respectively connected with the adjacent regenerative fins 403, and the web plate pieces 4042 are arranged along the vertical plane and extend downwards. In this way, the heat exchange area between each secondary air recuperation channel 406 and the secondary air can be greatly increased. And the intermediate strengthening fins 404 may divide the secondary air recuperative channel 406 into smaller channels to further increase the turbulence effect on the secondary air. Optionally, the vertical length of the web piece 4042 is shorter than the vertical length of the heat recovery fin 403, and the height of the bottom edge of the web piece 4042 may be higher than the height of the bottom edge of the heat recovery fin 403, so as to avoid the situation that the suction amount of the secondary air is affected due to too small channel separated by the middle reinforcing fin 404 in the secondary air heat recovery channel 406.
The energy collecting plate 401 is also heated and radiates heat outwards during cooking, so that heat is dissipated. In order to maximize the use of the heat generated by the burner combustion for heating the pot and avoid the heat from being dissipated from the energy collecting plate 401, in some embodiments, as shown in fig. 31 and 32, the energy collecting plate 401 may include a first energy collecting plate 4011 and a second energy collecting plate 4012 which are concentrically and arranged one above the other, a bottom plate surface of the first energy collecting plate 4011 and a top plate surface of the second energy collecting plate 4012 together define a heat insulation chamber 407, a plurality of support legs 402 are disposed on the top plate surface of the first energy collecting plate 4011, and a plurality of heat return fins 403 are disposed on the bottom plate surface of the second energy collecting plate 4012. Therefore, the heat of a combustion area can be reduced from dissipating outwards from the energy collecting disc 401 through the heat insulation cavity 407 between the first energy collecting disc 4011 and the second energy collecting disc 4012, the overall thermal efficiency of the combustor is further improved, and the combustor is more energy-saving and environment-friendly.
In some embodiments, the annular disc wall of the first energy concentrating disc 4011 is formed with an annular lower groove 40111, as shown in fig. 31, the first energy concentrating disc 4011 comprises a first energy concentrating disc inner annular rim, a first energy concentrating disc outer annular rim, and an annular disc wall connected between the first energy concentrating disc inner annular rim and the first energy concentrating disc outer annular rim, the annular disc wall is formed with a recessed annular lower groove 40111, and the groove bottom of the annular lower groove 40111 is lower than the first energy concentrating disc inner annular rim and the first energy concentrating disc outer annular rim, respectively. The concave shape of the annular lower groove 40111 can be adapted to the outline shape of the outer flame of the flame, so that a proper gap is left between the flame and the annular lower groove 40111, a sufficient combustion space for the flame is ensured, and excessive discharge of harmful substances caused by the wall of the flame tray is avoided. In addition, the annular lower groove 40111 can be used for containing liquid overflowing from the cookware, so that the liquid is prevented from flowing to the fire hole to block the fire hole.
Optionally, the tray bottom surface of the second energy concentrating tray 4012 has a plurality of support feet 405 extending downwardly, the plurality of support feet 405 being circumferentially spaced apart. As shown in fig. 2, the vertical length of the supporting foot 405 is greater than the vertical length of the heat recovery fin 403, and the height of the bottom edge of the heat recovery fin 403 is higher than the height of the bottom edge of the supporting foot 405, so that the heat recovery fin 403 is prevented from contacting with the lower supporting member, and the heat of the heat recovery fin 403 is prevented from being transferred to the lower supporting member and being dissipated too much. The plurality of support feet 405 may be independently disposed support feet, or may be formed by extending a part of the heat recovery fin 403 downward, which is not limited in this application.
Correspondingly, the application also provides a gas stove, which comprises the burner 1000. The specific structure of the burner 1000 refers to the above embodiments, and since the gas stove of the present application adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
In summary, the present invention provides a burner 1000 and a gas range, which have high thermal efficiency and thermal load and good flame uniformity of the burner 1000 and the gas range.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise specifically stated and defined, the term "communicate" includes not only direct communication but also indirect communication; the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (25)

1. The utility model provides a combustor, the combustor is including dividing gas tray and fire lid, its characterized in that, divide the gas tray to include the ring-shaped dish perisporium, be equipped with on the ring-shaped dish perisporium along circumference interval arrangement and along a plurality of primary air mixture via holes that the axial runs through and along a plurality of secondary air holes that circumference interval arrangement and radial run through, the fire lid is including being cyclic annular and lid and locating outer fire lid, suit on the gas tray are in interior fire lid and a plurality of connecting spoke in the outer fire lid, it is a plurality of connecting spoke is along circumference interval arrangement and connect respectively outer fire lid with interior fire lid, the outer ring chamber of outer fire lid is with a plurality of primary air mixture via hole intercommunication, outer fire lid in interior fire lid and all be equipped with a plurality of fire holes on the connecting spoke.
2. The burner of claim 1, wherein the number of secondary air holes is 10 or greater.
3. The burner of claim 2, wherein the area of the cross section of the secondary air hole perpendicular to the axial direction thereof is 50mm or more2And is less than or equal to 120mm2
4. The combustor according to claim 2, wherein the number of the primary mixture through holes is greater than or equal to 10, and the secondary air holes and the primary mixture through holes are circumferentially and sequentially distributed in an alternating manner; or the plurality of secondary air holes are uniformly grouped along the circumferential direction to form a plurality of secondary air hole groups which are arranged at intervals along the circumferential direction and at least comprise two secondary air holes, and the secondary air hole groups and the primary mixed air through holes are sequentially and alternately distributed along the circumferential direction.
5. The burner of claim 2, wherein the secondary air holes are round holes; or the secondary air holes are waist-shaped holes, and the parallel waist edges of the waist-shaped holes are arranged along the axial direction of the air distribution disc.
6. The burner of claim 1, wherein the top end outer edge and the top end inner edge of the annular disk peripheral wall are connected to the outer flame cover peripheral wall and the outer flame cover inner peripheral wall of the outer flame cover, respectively.
7. The burner according to any one of claims 1 to 6, wherein the web is hollow and cylindrical, and the cylindrical cavity of the web is a spoke cavity, and the two cylindrical ends of the web are respectively connected with the outer fire cover and the inner fire cover.
8. The burner of claim 7, wherein the axial direction of the web spokes is arranged along the radial direction of the fire cover and the area of the cross section of the web spokes perpendicular to the radial direction is gradually decreased from the outside to the inside.
9. The burner of claim 7, wherein the web spokes include a spoke top wall, a spoke bottom wall and two spoke side walls connected between the spoke top wall and the spoke bottom wall, the two spoke side walls are circumferentially spaced apart and the connection locations of the two spoke side walls and the spoke top wall are respectively formed with inclined wall portions that are inclined upward, a plurality of fire holes are provided on the two inclined wall portions, the two inclined wall portions include a front-side inclined wall portion that is arranged clockwise forward and a rear-side inclined wall portion that is arranged clockwise rearward, the front-side inclined wall portions of the plurality of web spokes or the rear-side inclined wall portions of the plurality of web spokes are formed as bent walls, and the plurality of fire holes are spaced apart on the bent walls.
10. The burner of claim 1, wherein the outer fire cover comprises an inner fire cover inner peripheral wall and an outer fire cover outer peripheral wall, the inner fire cover comprises an inner fire cover inner peripheral wall and an inner fire cover outer peripheral wall, the outer fire cover inner peripheral wall and the inner fire cover inner peripheral wall are both inclined upwards and are arranged inwards, the inner fire cover outer peripheral wall is inclined upwards and are arranged outwards, the fire holes on the outer fire cover inner peripheral wall, the fire holes on the inner fire cover inner peripheral wall and the fire holes on the inner fire cover outer peripheral wall are respectively arranged along the circumferential direction at intervals.
11. The burner of claim 10, wherein a plurality of said fire holes on the inner peripheral wall of said outer fire cover are circumferentially spaced and elevationally spaced to form a plurality of outer ring fire hole rings; and/or the fire holes on the outer peripheral wall of the inner fire cover are circumferentially arranged at intervals and are arranged at intervals in the height direction to form a plurality of inner ring outer fire hole rings; and/or the fire holes on the inner peripheral wall of the inner fire cover are circumferentially arranged and are arranged at intervals in the height direction to form a plurality of inner ring inner fire hole rings.
12. The burner as claimed in claim 10, wherein the height of the top edge of the inner fire cover is lower than or equal to the height of the bottom edge of the inner peripheral wall of the outer fire cover, and the heights of the fire holes of the outer fire cover, the fire holes of the web spokes and the fire holes of the inner fire cover are sequentially decreased.
13. The burner of claim 10, wherein an annular dividing wall is disposed between the inner flame cover peripheral wall and the inner flame cover peripheral wall to divide the annular chamber of the inner flame cover into a central annular chamber and an inner annular chamber, the inner flame cover peripheral wall and the dividing wall together defining the central annular chamber, and the inner flame cover peripheral wall and the dividing wall together defining the inner annular chamber.
14. The burner of claim 13 wherein the outer ring cavity of the outer fire cap, the spoke cavities of the web spokes, and the middle ring cavity are in sequential communication.
15. The burner of claim 14, further comprising a burner disposed below the fire cover and the gas distributor plate, the burner comprising:
an inner ring injection pipe;
an outer ring injection pipe;
the inner ring seat is internally provided with an inner ring distribution air passage communicated with the inner ring injection pipe, and the inner ring distribution air passage is communicated with the inner ring cavity;
the middle ring seat is sleeved between the inner ring seat and the outer ring seat and internally provided with a middle ring distribution air passage, and the middle ring distribution air passage is communicated with the outer ring distribution air passage through a middle and outer ring connecting air passage; and
the outer ring seat is sleeved outside the inner ring seat and internally provided with an outer ring distribution air passage communicated with the outer ring injection pipe, the bottom end face of the circumferential wall of the annular disc covers an upper opening of the outer ring distribution air passage, and the plurality of primary mixed gas through holes are communicated with the outer ring distribution air passage.
16. The burner of claim 15, wherein the upper opening of the middle ring gas distribution passage communicates with the middle ring cavity.
17. The burner of claim 15, wherein the inner fire cover further comprises an inner fire cover bottom wall covering the lower opening of the middle ring cavity, and the burner further comprises an air channel cover body detachably disposed on the middle ring seat and covering the upper opening of the middle ring distribution air channel.
18. The burner of claim 15, wherein the middle ring seat includes a middle ring seat inner circumferential wall and a middle ring seat outer circumferential wall defining the middle ring distribution air passage, and the outer ring seat includes an outer ring seat inner circumferential wall and an outer ring seat outer circumferential wall defining the outer ring distribution air passage, and the middle outer ring connecting air passage extends radially and is connected between the middle ring seat outer circumferential wall and the outer ring seat inner circumferential wall.
19. The burner according to claim 18, wherein an outer ring ejection tube air outlet of the outer ring ejection tube is arranged on the outer circumferential wall of the outer ring seat, the middle outer ring connecting air duct and the outer ring ejection tube are both straight tube-shaped and extend outwards along the same radial direction, a communication channel air inlet on the inner circumferential wall of the outer ring seat of the middle outer ring connecting air duct faces the outer ring ejection tube air outlet, and the area of the communication channel air inlet is smaller than that of the outer ring ejection tube air outlet.
20. The burner of claim 15 wherein the outer annular ejector tube and the inner annular ejector tube extend radially and are circumferentially spaced apart.
21. The burner of claim 14, wherein the inner fire cap further comprises an inner fire cap bottom wall covering the lower opening of the middle ring cavity, the burner further comprising a burner head disposed below the fire cap and the gas distributor plate, the burner head comprising:
an inner ring injection pipe;
an outer ring injection pipe;
the inner ring seat is internally provided with an inner ring distribution air passage communicated with the inner ring injection pipe, and the inner ring distribution air passage is communicated with the inner ring cavity; and
the outer ring seat is sleeved outside the inner ring seat and internally provided with an outer ring distribution air passage communicated with the outer ring injection pipe, the bottom end face of the circumferential wall of the annular disc covers an upper opening of the outer ring distribution air passage, and the plurality of primary mixed gas through holes are communicated with the outer ring distribution air passage.
22. The burner of claim 21, wherein the interface of the outer ring ejector tube is located at the bottom of the outer ring seat and the outer ring ejector tube is communicated with the outer ring distribution air passage along a tangential direction, the interface of the inner ring ejector tube is located at the bottom of the inner ring seat and the inner ring ejector tube is communicated with the inner ring distribution air passage along a tangential direction, and the outer ring ejector tube and the inner ring ejector tube are arranged in parallel at intervals.
23. The burner of claim 1, further comprising a pan support nested outside the fire lid and the gas distributor, the pan support comprising:
the energy-gathering disc is annular;
the support part is arranged on the energy-gathering plate and is used for supporting the pot; and
the heat recovery fins are arranged on the bottom surface of the energy collection disc and are arranged at intervals along the circumferential direction, and a secondary air heat recovery channel is formed between any two heat recovery fins.
24. The burner of claim 23, wherein the energy concentrating discs comprise a first energy concentrating disc and a second energy concentrating disc arranged concentrically and above one another, a disc bottom surface of the first energy concentrating disc and a disc top surface of the second energy concentrating disc together defining a heat insulating chamber, a plurality of the standoff feet are disposed on the disc top surface of the first energy concentrating disc, and a plurality of the heat return fins are disposed on the disc bottom surface of the second energy concentrating disc.
25. Gas burner characterized in that it comprises a burner according to any one of claims 1 to 24.
CN202110076246.7A 2021-01-20 2021-01-20 Burner and gas stove Active CN112815314B (en)

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CN202110076246.7A CN112815314B (en) 2021-01-20 2021-01-20 Burner and gas stove
PCT/CN2021/078903 WO2022156046A1 (en) 2021-01-20 2021-03-03 Burner cap, burner and gas stove

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CN112815314B true CN112815314B (en) 2021-10-15

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