CN111256126A - Burner for gas stove - Google Patents

Burner for gas stove Download PDF

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Publication number
CN111256126A
CN111256126A CN201811458719.4A CN201811458719A CN111256126A CN 111256126 A CN111256126 A CN 111256126A CN 201811458719 A CN201811458719 A CN 201811458719A CN 111256126 A CN111256126 A CN 111256126A
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CN
China
Prior art keywords
gas
cavity
mixing chamber
burner
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201811458719.4A
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Chinese (zh)
Other versions
CN111256126B (en
Inventor
卢华师
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Fotile Kitchen Ware Co Ltd
Original Assignee
Ningbo Fotile Kitchen Ware Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Fotile Kitchen Ware Co Ltd filed Critical Ningbo Fotile Kitchen Ware Co Ltd
Priority to CN201811458719.4A priority Critical patent/CN111256126B/en
Publication of CN111256126A publication Critical patent/CN111256126A/en
Application granted granted Critical
Publication of CN111256126B publication Critical patent/CN111256126B/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
    • F23D14/26Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • 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
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • F23D14/64Mixing devices; Mixing tubes with injectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00Passages or apertures for delivering secondary air for completing combustion of fuel 
    • 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 relates to a burner for a gas stove, which comprises a base with a sandwich structure, wherein the base comprises a concave cavity positioned in the center and a peripheral cavity surrounding the concave cavity, a second injection channel with an upward and vertical opening is arranged in the center of the concave cavity, and the second injection channel is communicated with the peripheral cavity; compared with the prior art, the invention has the advantages that the first injector and the second injector are staggered and are respectively connected with the first connecting body positioned on the base through the first nozzle seat and the second nozzle seat and are suspended above the cavity of the base, once overflowing liquid enters the cavity of the base, the normal use of the burner cannot be influenced due to the blockage of the injector, in addition, the base has a sandwich structure, the length of a gas channel in the base is equivalently increased, and the mixing uniformity of gas and primary air is further increased.

Description

Burner for gas stove
Technical Field
The invention relates to a burner of a gas cooker, in particular to an upper air inlet type cooker burner.
Background
At present, a complete upper air inlet type burner is used in a plurality of gas cookers, and because primary air and secondary air required by the complete upper air inlet type burner during burning are both from the upper part of a cooker panel, a chassis of the gas cooker can be completely sealed. However, the conventional burner with complete upward air intake is realized by the gap between the air mixing chamber and the base when primary air is supplemented, and therefore, the problem is that the gap exists between the air mixing chamber and the base, and after the mounting screw of the panel is mounted, the mounting screw can be seen from the outside of the burner, so that the appearance of the burner is not beautiful enough. Moreover, after a gap is formed between the base and the air mixing chamber, the overflow liquid flows into the base and the round basin-shaped main body positioned below the panel through the gap, namely the term bottom cup blocks the ejector, so that inconvenience is brought to maintenance and cleaning of a user, and the normal use of the burner is influenced if the overflow liquid cannot be removed for a long time.
Meanwhile, primary air supplemented to the upper air inlet burner from the panel enters the bottom cup by utilizing negative pressure generated by jetting gas from the nozzle, the airflow distribution of the primary air is easily uneven, the primary air coefficient is influenced to a certain extent, and the gas pressure flowing out from the fire hole formed in the circumferential direction of the outer ring fire cover or the inner ring fire cover is uneven, so that the flame of outer ring fire generated by the outer ring fire cover or the flame of inner ring fire generated by the inner ring fire cover is uneven, the flame length of the central fire and the flame of the outer ring fire are also different due to incomplete mixing of the gas and the primary air, meanwhile, the injection pipe is limited by the height of the upper air inlet burner and cannot be too long, so that the channel resistance is large, yellow flame is easily generated when the power is large, and particularly when the flame is in a small fire gear, the yellow flame is more obvious.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a burner for a gas stove, which effectively improves the mixing uniformity of primary air and gas, in view of the above-mentioned prior art.
The second technical problem to be solved by the present invention is to provide a burner for a gas stove, which can have sufficient gas at a fire-protecting position to improve the success rate of fire protection, in view of the above-mentioned current state of the art.
The third technical problem to be solved by the present invention is to provide a burner for a gas stove, which is not easy to cause liquid overflow to block an injector, in view of the above-mentioned current state of the art.
The fourth technical problem to be solved by the present invention is to provide a burner for a gas stove, which is not easy to generate yellow flame and weak fire, in view of the above-mentioned current state of the art.
The technical scheme adopted by the invention for solving the technical problems is as follows: this a combustor for gas-cooker, its characterized in that: comprises the following steps:
the base is of a sandwich structure and comprises a concave cavity positioned in the center and a peripheral cavity surrounding the concave cavity, a second injection channel with an upward and vertical opening is arranged in the center of the concave cavity, and the second injection channel is communicated with the peripheral cavity;
the first connecting body is arranged on the base and comprises a plate body, the plate body is provided with a central hole, the hole wall of the central hole protrudes upwards to form a circle of annular wall, an annular cavity surrounded by the annular wall corresponds to the concave cavity, at least two vertical first gas channels are arranged on the periphery of the plate body at intervals along the circumferential direction, and the lower ends of the first gas channels are supported on the top end of the hole wall of the through hole;
the second connecting body is arranged on the first connecting body and comprises an inner stage body and an outer ring body which are concentrically arranged at intervals, the top end of the inner stage body is provided with a circle of convex wall which protrudes upwards, the center of the inner stage body is provided with a first injection channel which is inclined relative to the horizontal plane, and the outer ring body is provided with a second gas channel which is communicated with the first gas channel along the circumferential direction;
the first fire cover is arranged on the inner table body, and a first gas mixing chamber which is positioned in the center and communicated with the first injection channel is formed between the first fire cover and the convex wall of the inner table body;
the second cover body is arranged on the second connecting body, and a second gas mixing chamber which is positioned at the periphery of the first gas mixing chamber and communicated with the first gas channel and the second gas channel is formed between the second cover body and the outer ring body;
a first nozzle holder, wherein a first root part of the first nozzle holder is connected to the inner wall surface of the annular wall, a first free part of the first nozzle holder extends to the center of the annular cavity to be connected with a first ejector, and the first ejector faces the first injection channel; and
and a second root portion of the second nozzle holder is connected to the inner wall surface of the annular wall, and a second free portion of the second nozzle holder extends to the center of the annular cavity to be connected with a second ejector facing the second injection passage.
In order to solve the second technical problem, the second air mixing chamber is provided with a flow guide chamber in a relatively isolated manner, the part of the inner stage body outside the first injection passage is provided with a flow guide hole, and the second air mixing chamber further comprises a transmission passage for transmitting primary air and fuel gas from the first air mixing chamber to the flow guide chamber through the flow guide hole. The flow guide chambers are arranged in the second gas mixing chamber in a relatively isolated way, so that the thermocouples are provided with relatively independent 'fire protection chambers', the heating area of the thermocouples contacting with the flame is ensured not to be too large or too small, the thermocouples are not only heated sufficiently to generate enough thermoelectric force, but also the thermocouples are not burnt out due to too large contact with the flame of the fire protection holes, and simultaneously the thermocouples are ensured to have enough fuel gas, thereby effectively improving the success rate of fire protection,
in order to strengthen the connection between the first air mixing chamber and the second air mixing chamber, the second connector is provided with at least two connecting ribs which are arranged between the first air mixing chamber and the second air mixing chamber at intervals along the circumferential direction and are used for connecting the first air mixing chamber and the second air mixing chamber.
The first end of the first connecting rib is communicated with the flow guide chamber, and the second end of the first connecting rib is communicated with the first air mixing chamber.
In order to prevent the overflow liquid from entering the concave cavity, the lower sealing plate is positioned below the first connecting rib, the local part of the lower sealing plate forms the bottom wall of the first connecting rib, the central position of the lower sealing plate is provided with a central hole, the peripheral edge of the lower sealing plate extends in the horizontal direction and can cover the concave cavity, and the peripheral edge of the lower sealing plate is also provided with a notch for the second fuel gas channel to pass through.
Meanwhile, in order to realize the separation between the primary air channel and the secondary air channel and prevent the mutual interference during the supplement of the primary air and the secondary air, a circle of air channel communicated with the outside is formed between the first connecting body and the second connecting body, and the lower sealing plate separates the air channel into the primary air channel positioned below the lower sealing plate and the secondary air channel positioned above the upper sealing plate.
The primary air channel may be formed by any one of the pipelines in the prior art for communicating the outside with the cavity of the base, and may also be formed in such a manner that the primary air channel is circumferentially and alternately arranged along the first connecting body, and the primary air channel is used for communicating the cavity with the outside to introduce primary air into the cavity of the base from the outside. The interval between the adjacent first fuel gas channels positioned below the lower sealing plate forms the primary air channel arranged at the interval.
Similarly, the secondary air channel can be formed by any pipeline in the prior art for communicating the outside with the air replenishing cavity, and can also be formed by the following method: an air supplementing cavity is formed between the first air mixing chamber and the second air mixing chamber, the secondary air channel is arranged along the second connecting body in a circumferential direction at intervals and is used for communicating the air supplementing cavity with the outside so as to introduce secondary air into the air supplementing cavity from the outside. Wherein the spacing between adjacent second fuel gas passages on the upper closure plate defines the spaced secondary air passages.
In order to prevent overflowing liquid from entering the inner fire hole and the inner flame stabilizing hole, the first fire cover comprises a top wall and an outer ring wall which vertically or obliquely extends downwards from the outer periphery of the top wall, at least two inner fire holes and inner flame stabilizing holes which are communicated with the first gas mixing chamber are formed in the outer ring wall at intervals along the circumferential direction, a first convex ring horizontally extends downwards from the top wall, and the first convex ring forms a protective umbrella of the inner fire holes and the inner flame stabilizing holes.
In order to realize the fire-out stability of the outer ring body, a plurality of main fire grooves and first main fire stabilizing grooves which are arranged at intervals are radially formed on the outer end surface of the outer ring body in the circumferential direction, and the second cover body and the first main fire grooves and the first main fire stabilizing grooves form a first main fire hole and a first flame stabilizing hole respectively.
Similarly, at least two second main fire holes are formed in the inner side wall of the outer ring body positioned on the inner side along the circumferential direction for the purpose of realizing the uniformity of the bottom of the boiler heated by the burner by two ring fires at intervals inside and outside the outer ring body.
In order to prevent the overflowing liquid from entering each fire hole of the outer ring body, a second convex ring and a third convex ring vertically or obliquely extend downwards from the inner side edge and the outer side edge of the second cover body so as to respectively form a protective umbrella with a first main fire hole, a first flame stabilizing hole and a second main fire hole.
Compared with the prior art, the invention has the advantages that the first ejector and the second ejector are staggered and are respectively connected with the first connecting body positioned on the base through the first nozzle seat and the second nozzle seat and are suspended on the concave cavity of the base, once overflowing liquid enters the concave cavity of the base, the normal use of the burner cannot be influenced due to the blockage of the ejector, meanwhile, the first connecting body is detachably connected with the base, the maintenance and the cleaning of a user are convenient, in addition, the central position of the inner table body is provided with the first injection channel inclined relative to the horizontal plane, so that the first injection channel can be longer under the condition of not changing the height of the whole burner, the injection capacity is enhanced, in addition, the base has an interlayer structure, the length of a gas channel in the base is equivalently increased, the mixing uniformity of the gas and the primary air is further increased, the kinetic energy loss can be effectively reduced, so that the flame of the upper air inlet burner is short, uniform and powerful, and the defects of yellow flame, tempering and the like can not occur.
Drawings
FIG. 1 is a schematic view of a burner according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic structural diagram of a first connecting body according to an embodiment of the invention;
FIG. 4 is a schematic view of an angle in a second connector according to an embodiment of the present invention;
FIG. 5 is a schematic view of another angle of a second connector according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view at an angle of FIG. 1;
FIG. 7 is a cross-sectional view at another angle in FIG. 1;
FIG. 8 is a schematic structural view of a first fire cover in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a base in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 9, as a preferred embodiment of the present invention, the burner for gas cookers is suitable for both conventional upper intake burners and italian savart burners in europe, and includes a base 1 having a sandwich structure, the base 1 includes a cavity 11 at the center and a peripheral chamber 12 surrounding the cavity 11, and the cavity 11 has a second vertical injecting passage 111 with an upward opening at the center, the second injecting passage 111 is communicated with the peripheral chamber 12, the base 1 is further provided with a first connecting body 5, the first connecting body 5 includes a plate body having a central hole 51, the hole wall of the central hole 51 protrudes upward to form a ring-shaped wall 511, the ring-shaped cavity defined by the ring-shaped wall 511 corresponds to the cavity 11, and the periphery of the plate body is provided with at least two, for example four vertical first gas passages 513 at intervals along the circumferential direction, the lower end of the first gas channel 513 is supported on the top end of the hole wall of the through hole 121; the gas stove further comprises a second connecting body 2 arranged on the first connecting body 5, the second connecting body 2 comprises an inner table body 21 and an outer ring body 22 which are concentrically arranged at intervals, the top end of the inner table body 21 is provided with a circle of convex wall 211 which protrudes upwards, the central position of the inner table body 21 is provided with a first injection channel 212 which is inclined relative to the horizontal plane, the outer ring body 22 is provided with a second gas channel 221 which is communicated with the first gas channel 513 along the circumferential direction, and the inner table body 21 is provided with a first fire cover 3, a first air mixing chamber 31 which is positioned at the center and communicated with a first injection channel 212 is formed between the first fire cover 3 and the convex wall 211 of the inner table body 21, the first injection passage 212 is of a cylindrical structure with openings at the upper and lower parts, the inlet at the lower end of the first injection passage 212 is communicated with the cavity 11 of the base 1 and is opposite to the first ejector 20, and the outlet at the upper end of the first injection passage 212 is communicated with the first gas mixing chamber 31; in order to facilitate users to use the inner and outer ring flames for the burner, a second cover 4 is arranged on the second connector 2, and a second gas mixing chamber 41 which is positioned at the periphery of the first gas mixing chamber 31 and communicated with the first gas channel 513 and the second gas channel 221 is formed between the second cover 4 and the outer ring 22; the inner wall surface of the annular wall 511 of the first connecting body 5 is connected with a first nozzle holder 6, the first root 61 of the first nozzle holder 6 is connected with the inner wall surface of the annular wall 511, the first free portion 62 of the first nozzle holder 6 extends to the center of the annular cavity 512 to be connected with the first ejector 20 facing the first bleed passage 212, the inner wall surface of the annular wall 511 of the first connecting body 5 is connected with a second nozzle holder 9 at a position staggered with respect to the first nozzle holder 6, the second root 91 of the second nozzle holder 9 is connected with the inner wall surface of the annular wall 511, and the second free portion 92 of the second nozzle holder 9 extends to the center of the annular cavity 512 to be connected with the second ejector 90 facing the second bleed passage 111. Because the first injector 20 and the second injector 90 are staggered and connected to the first connecting body 5 on the base 1 through the first nozzle holder 6 and the second nozzle holder 9 respectively and are suspended above the cavity 11 of the base 1, once the overflowing liquid enters the cavity 11 of the base 1, the normal use of the burner cannot be influenced due to the blockage of the injectors, meanwhile, the first connecting body 5 is detachably connected with the base 1, the maintenance and the cleanness of a user are convenient, in addition, the central position of the inner table body 21 is provided with the first injection passage 212 inclined relative to the horizontal plane, so that the first injection passage 212 can be longer under the condition of not changing the height of the whole burner, the injection capability is enhanced, and the base 1 with the sandwich structure, the first gas passage 513 of the first connecting body 5 and the second gas passage 221 of the second connecting body 2, the length of increasing gas channel in the base 1 has been formed jointly to further increase the degree of consistency that gas and primary air mix, can also effectively reduce the kinetic energy loss, thereby make the flame of going up the air inlet burner short, even and powerful, defects such as yellow flame, tempering can not appear.
Another important point of the present embodiment is: the second air mixing chamber 41 is provided with a flow guide chamber 411 in a relatively isolated manner, the part of the inner stage body 21 outside the first injection passage 212 is provided with flow guide holes 210, and the second air mixing chamber further comprises a transmission passage for transmitting the primary air and the fuel gas from the first air mixing chamber 31 to the flow guide chamber 411 through the flow guide holes 210. The flow guide chambers 411 are arranged in the second gas mixing chamber 41 in a relatively isolated manner, so that the thermocouples are provided with relatively independent 'fire protection chambers', the heating area of the thermocouples contacting with the flames is ensured to be not too large or too small, the thermocouples are heated sufficiently to generate sufficient thermoelectric force, the thermocouples cannot be burnt out due to too large contact with the flames of the fire protection holes, and the thermocouples can be provided with sufficient fuel gas, the success rate of fire protection is effectively improved, and meanwhile, primary air and the fuel gas can be transmitted to the flow guide chambers 411 from the first gas mixing chamber 31 through the transmission channels, so that the thermocouples can be moved outwards out of the second gas mixing chamber 41 during installation, and the reduction of fire protection sensitivity of the thermocouples caused by slow heat dissipation when the thermocouples are installed on the inner ring fire cover is avoided. In order to strengthen the connection between the first air mixing chamber 31 and the second air mixing chamber 41, the second connecting body 2 has at least two connecting ribs 7 connecting the first air mixing chamber 31 and the second air mixing chamber 41 at intervals along the circumferential direction.
Skillfully, when the connecting ribs 7 are used for connecting the first air mixing chamber 31 and the second air mixing chamber 41, one of the connecting ribs 7, namely the first connecting rib 71, is hollow to form a transmission channel, the first end 711 of the first connecting rib 71 is communicated with the flow guide chamber 411, and the second end 712 of the first connecting rib 71 is communicated with the first air mixing chamber 31. In order to prevent the liquid from overflowing into the cavity 11, the lower sealing plate 8 is located below the first connecting rib 71, the lower sealing plate 8 partially forms the bottom wall of the first connecting rib 71, the lower sealing plate 8 has a central hole 81 at the central position, the outer peripheral edge of the lower sealing plate 8 extends in the horizontal direction and can cover the cavity 11, and the outer peripheral edge of the lower sealing plate 8 also has a notch 82 for the second gas channel 221 to pass through. Meanwhile, in order to separate the primary air passage 83 and the secondary air passage 84 and prevent mutual interference between the primary air and the secondary air when the primary air and the secondary air are supplied, a ring of air passages communicating with the outside are formed between the first connecting body 5 and the second connecting body 2, and the lower sealing plate 8 divides the air passages into the primary air passage 83 below the lower sealing plate 8 and the secondary air passage 84 above the lower sealing plate 8. The primary air passage 83 may be formed by any one of the prior art pipes for communicating the outside with the cavity 11 of the base 1, or may be formed in such a manner that the primary air passage 83 is circumferentially spaced along the first connecting body 5, and the primary air passage 83 is used for communicating the cavity 11 with the outside to introduce the primary air into the cavity 11 of the base 1 from the outside. Wherein the spacing between adjacent first gas passages 513 below the lower closure plate 8 constitutes the primary air passages 83 arranged at the above-mentioned spacing. Similarly, the secondary air passage 84 may be formed by any of the prior art ducts connecting the outside to the plenum 100, and may be formed as follows: an air supply cavity 100 is formed between the first air mixing chamber 31 and the second air mixing chamber 41, secondary air passages 84 are circumferentially arranged along the second connecting body 2 at intervals, and the secondary air passages 84 are used for communicating the air supply cavity 100 with the outside so as to introduce secondary air into the air supply cavity 100 from the outside. The spacing between adjacent second fuel gas passages 221 on the lower seal plate 8 forms the spaced secondary air passages 84. In order to prevent the overflowing liquid from entering the inner fire hole 331 and the inner flame stabilizing hole 3321, the first fire cover 3 includes a top wall 32 and an outer annular wall 33 extending vertically or obliquely downward from the outer periphery of the top wall 32, the outer annular wall 33 is circumferentially provided with at least two inner fire holes 331 and inner flame stabilizing holes 3321 communicating with the first air mixing chamber 31 at intervals, the top wall 32 is horizontally and downwardly extended with a first convex ring 321, and the first convex ring 321 forms a protective umbrella of the inner fire holes 331 and the inner flame stabilizing holes 3321. In order to realize the fire-out stability of the outer ring body 22, a plurality of main fire grooves 222 and first main fire stabilizing grooves 223 are formed radially around the circumferential direction on the outer end surface of the outer ring body 22, and the second cover body 4 forms a first main fire hole and a first fire stabilizing hole with the first main fire grooves 222 and the first main fire stabilizing grooves 223, respectively. Also, in order to realize the uniformity of the burner heating pan bottom by the two ring fires spaced inside and outside the outer ring body 22, at least two second main fire holes 224 are formed in the inner side wall of the outer ring body 22 at the inner side along the circumferential direction. In order to prevent the overflow from entering into each fire hole of the outer ring body 22, the second and third rims 42 and 43 vertically or obliquely extend downward from the inner and outer edges of the second cover 4 to form a protective umbrella with a first main fire hole, a first flame stabilizing hole, and a second main fire hole 224, respectively.
Referring to fig. 6, as described above, due to the low pressure caused by the gas injection from the first injector 20 to the first injection passage 212 and the first gas mixing chamber 31 having the radial venturi effect, the primary air is sucked into the cavity 11 of the base 1 from the outside through the primary air passage 83, and then the primary air is sucked into the first injection passage 212 by the kinetic energy of the gas itself, and is premixed with the gas, and finally is further mixed in the first gas mixing chamber 31, and the mixed primary air and gas finally flow out through the inner fire holes 331 and the inner flame stabilizing holes 3321 of the first fire cover 3 and are ignited together with the secondary air of the external environment, so as to form the inner fire. The second connector 2 further comprises an outer fire which can be controlled by a user independently, primary air and fuel gas required by the outer fire are input into the second gas mixing chamber 41 through the second injection passage 111 which is positioned outside the base 1 and is independent of the first injection passage 212 and passes through the outer chamber 12, the first fuel gas passage 513 and the second fuel gas passage 221 of the base 1, meanwhile, the second gas mixing chamber 41 is separated from the first gas mixing chamber 31, so that fluid separation of the second gas mixing chamber 41 and the first gas mixing chamber 31 is realized, the primary air and the fuel gas required by the outer fire are input into the second gas mixing chamber 41 through the second injection passage 111 which is positioned in the center of the cavity 11 of the base 1 and is independent of the first injection passage 212 and passes through the second injection passage 111, the outer chamber 12, the first fuel gas passage 513 and the second fuel gas passage 221 of the base 1, and the outer chamber 12 of the sandwich structure and the first fuel gas passage 513, the outer fire of the first connector 5, The second gas channel 221 of the second connector 2 is communicated, which is equivalent to increasing the length of the gas channel in the base 1, further increasing the mixing uniformity of the gas and the primary air, and then independently supplying the gas and the primary air to allow a user to independently control the inflow of the fuel mixture into the first injection channel 212 and the second injection channel 111, and if the size of the peripheral fire and the central fire is to be adjusted, the adjusting valve connected to the gas inlet end of the input channel is adjusted.

Claims (12)

1. A burner for a gas cooker, characterized in that: comprises the following steps:
the base (1) is of a sandwich structure and comprises a concave cavity (11) positioned in the center and a peripheral cavity (12) surrounding the concave cavity (11), a second injection passage (111) with an upward and vertical opening is formed in the center of the concave cavity (11), and the second injection passage (111) is communicated with the peripheral cavity (12);
the first connecting body (5) is arranged on the base (1), the first connecting body (5) comprises a plate body, the plate body is provided with a central hole (51), the hole wall of the central hole (51) protrudes upwards to form a ring of annular wall (511), an annular cavity (512) enclosed by the annular wall (511) corresponds to the concave cavity (11), at least two vertical first gas channels (513) are arranged on the periphery of the plate body at intervals along the circumferential direction, and the lower ends of the first gas channels (513) are supported on the top end of the hole wall of the through hole (121);
the second connecting body (2) is arranged on the first connecting body (5), the second connecting body (2) comprises an inner table body (21) and an outer ring body (22) which are concentrically arranged at intervals, the top end of the inner table body (21) is provided with a circle of convex wall (211) which protrudes upwards, the center of the inner table body (21) is provided with a first injection channel (212) which inclines relative to the horizontal plane, and the outer ring body (22) is provided with a second gas channel (221) which is communicated with the first gas channel (513) along the circumferential direction;
the first fire cover (3) is arranged on the inner table body (21), and a first gas mixing chamber (31) which is positioned in the center and communicated with the first injection channel (212) is formed between the first fire cover and the convex wall (211) of the inner table body (21);
a second cover body (4) which is arranged on the second connecting body (2) and forms a second gas mixing chamber (41) which is positioned at the periphery of the first gas mixing chamber (31) and communicated with the first gas channel (513) and the second gas channel (221) with the outer ring body (22);
a first nozzle holder (6), a first root portion (61) of the first nozzle holder (6) is connected to the inner wall surface of the annular wall (511), and a first free portion (62) of the first nozzle holder (6) extends to the center of the annular cavity (512) to be connected with a first ejector (20), wherein the first ejector (20) faces the first injection passage (212); and
a second nozzle holder (9), a second root (91) of the second nozzle holder (9) being connected to an inner wall surface of the annular wall (511), and a second free portion (92) of the second nozzle holder (9) extending to a center of the annular chamber (512) to be connected with a second ejector (90), the second ejector (90) facing the second injection passage (111).
2. Burner for gas cooktops according to claim 1, characterized in that: the second air mixing chamber (41) is relatively provided with a flow guide chamber (411) in an isolated mode, the part, outside the first injection passage (212), of the inner platform body (21) is provided with a flow guide hole (210), and the second air mixing chamber further comprises a transmission passage which is used for transmitting primary air and fuel gas to the flow guide chamber (411) from the first air mixing chamber (31) through the flow guide hole (210).
3. Burner for gas cooktops according to claim 2, characterized in that: the second connecting body (2) is provided with at least two connecting ribs (7) which are arranged between the first air mixing chamber (31) and the second air mixing chamber (41) along the circumferential direction at intervals and are used for connecting the first air mixing chamber and the second air mixing chamber.
4. Burner for gas cooktops according to claim 3, characterized in that: one of the connecting ribs (7), namely the first connecting rib (71), is hollow so as to form the transmission channel, the first end (711) of the first connecting rib (71) is communicated with the flow guide chamber (411), and the second end (712) of the first connecting rib (71) is communicated with the first air mixing chamber (31).
5. Burner for gas cooktops according to claim 4, characterized in that: still including being located lower shrouding (8) under first tie-bar (71), shrouding (8) local constitution down the diapire of first tie-bar (71), the central point of shrouding (8) puts down and has centre bore (81), the periphery of shrouding (8) is followed then and is extended on the horizontal direction and can cover cavity (11) down the periphery of shrouding (8) is followed still to have and supplies breach (82) that second gas channel (221) passed.
6. Burner for gas cooktops according to claim 5, characterized in that: a circle of air channels communicated with the outside are formed between the first connecting body (5) and the second connecting body (2), and the lower sealing plate (8) divides the air channels into primary air channels (83) positioned below the lower sealing plate (8) and secondary air channels (84) positioned above the lower sealing plate (8).
7. Burner for gas cooktops according to claim 6, characterized in that: the primary air channels (83) are arranged at intervals along the circumference of the first connecting body (5), and the primary air channels (83) are used for communicating the cavity (11) with the outside so as to introduce primary air into the cavity (11) of the base (1) from the outside.
8. Burner for gas cooktops according to claim 7, characterized in that: an air supplementing cavity (100) is formed between the first air mixing chamber (31) and the second air mixing chamber (41), the secondary air channel (84) is arranged along the second connecting body (2) in a circumferential direction at intervals, and the secondary air channel (84) is used for communicating the air supplementing cavity (100) with the outside so as to introduce secondary air into the air supplementing cavity (100) from the outside.
9. The burner for a gas range according to any one of claims 1 to 8, wherein: the first fire cover (3) comprises a top wall (32) and an outer annular wall (33) extending downwards from the outer periphery of the top wall (32) in a vertical or inclined mode, the outer annular wall (33) is provided with at least two inner fire holes (331) and inner flame stabilizing holes (3321) which are communicated with the first air mixing chamber (31) at intervals along the circumferential direction, the top wall (32) horizontally extends downwards to form a first convex ring (321), and the first convex ring (321) forms a protective umbrella with the inner fire holes (331) and the inner flame stabilizing holes (3321).
10. Burner for gas cooktops according to claim 9, characterized in that: the outer end face of the outer ring body (22) is radially formed with a plurality of main fire grooves (222) and first main fire stabilizing grooves (223) which are arranged at intervals along the circumferential direction, and the second cover body (4) and the first main fire grooves (222) and the first main fire stabilizing grooves (223) form first main fire holes and first flame stabilizing holes respectively.
11. Burner for gas cooktops according to claim 10, characterized in that: the inner side wall of the outer ring body (22) on the inner side is provided with at least two second main fire holes (224) along the circumferential direction.
12. Burner for gas cooktops according to claim 11, characterized in that: and a second convex ring (42) and a third convex ring (43) vertically or obliquely extend downwards from the inner side edge and the outer side edge of the second cover body (4) to respectively form a protective umbrella with a first main fire hole, a first flame stabilizing hole and a second main fire hole (224).
CN201811458719.4A 2018-11-30 2018-11-30 Burner for gas stove Active CN111256126B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113280338A (en) * 2021-06-01 2021-08-20 浙江莫尼电气有限公司 Upper air inlet burner

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CN103994436A (en) * 2014-05-19 2014-08-20 宁波方太厨具有限公司 Upper air inlet type burner for gas stove
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CN206958922U (en) * 2017-06-01 2018-02-02 华帝股份有限公司 A kind of three ring burners of three rings distributor and the application distributor
CN207635338U (en) * 2017-12-26 2018-07-20 宁波方太厨具有限公司 A kind of burner for gas-cooker
CN208011708U (en) * 2018-03-09 2018-10-26 彭建国 A kind of upper air inlet burner of adjustable air air inlet

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US20070218414A1 (en) * 2005-09-13 2007-09-20 Uwe Harneit Gas burner
CN203052661U (en) * 2013-01-09 2013-07-10 中山华帝燃具股份有限公司 Novel burner
CN103175203A (en) * 2013-03-06 2013-06-26 宁波方太厨具有限公司 Upper air inlet burner
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CN208011708U (en) * 2018-03-09 2018-10-26 彭建国 A kind of upper air inlet burner of adjustable air air inlet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113280338A (en) * 2021-06-01 2021-08-20 浙江莫尼电气有限公司 Upper air inlet burner

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