CN111256125B - Burner for gas stove - Google Patents

Burner for gas stove Download PDF

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Publication number
CN111256125B
CN111256125B CN201811458690.XA CN201811458690A CN111256125B CN 111256125 B CN111256125 B CN 111256125B CN 201811458690 A CN201811458690 A CN 201811458690A CN 111256125 B CN111256125 B CN 111256125B
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CN
China
Prior art keywords
gas
cavity
air
burner
ring
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Application number
CN201811458690.XA
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Chinese (zh)
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CN111256125A (en
Inventor
卢华师
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Priority to CN201811458690.XA priority Critical patent/CN111256125B/en
Publication of CN111256125A publication Critical patent/CN111256125A/en
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Publication of CN111256125B publication Critical patent/CN111256125B/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 is characterized in that: the thermocouple 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 first connecting body, a second connecting body, a first cover body connected to the first connecting body, a second cover body connected to the second connecting body, a flow guide chamber and a transmission channel for transmitting primary air and fuel gas from the first gas mixing chamber to the flow guide chamber.

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. Meanwhile, another phenomenon exists, namely, an ignition needle for ignition and a thermocouple for fire protection are usually arranged on the periphery of the inner ring fire cover, if the speed of gas corresponding to the ignition needle upper cover is too high, the flow speed of gas corresponding to the ignition hole is too high, flame separation or reduction of ignition success rate can be caused, and in order to improve the fire protection performance of the thermocouple, the thermocouple needs to be ensured to have sufficient gas supply, the speed requirement of the ignition needle on the gas is higher, although the speed requirement of the thermocouple on the gas is weaker, the gas quantity is more important for the thermocouple, and in summary, the existing combustor needs to be further improved.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide a burner for a gas stove, which can 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 second 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 fuel gas, 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, and the top wall of the peripheral cavity is provided with at least two through holes along the circumferential direction;
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, 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 end of each first gas channel is 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 ring body and an outer ring body which are concentrically arranged at intervals, a vertical first injection passage is arranged at the center of the inner ring body, a second gas passage communicated with the first gas passage is arranged on the outer ring body along the circumferential direction, and the first injection passage is matched with a first injector;
the first cover body is arranged on the second connecting 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 cover body and the second connecting body; and
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;
the flow guide chamber is arranged in the second air mixing chamber in a relatively isolated manner; and
and the transmission channel is used for transmitting the primary air and the fuel gas from the first gas mixing chamber to the flow guide chamber.
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.
The present invention provides the following solutions to solve the third object of the present invention: the first free part of the first nozzle seat 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 is spaced from the center of the bottom of the cavity. The first ejector is connected with the first connecting body positioned on the base through the first nozzle seat and is suspended on the concave cavity of the base, once overflowing liquid enters the concave cavity of the base, the influence on the normal use of the burner due to the blockage of the ejector cannot occur, and meanwhile, the first connecting body is detachably connected with the base, so that the maintenance and the cleaning of a user are facilitated.
In order to strengthen the supporting force of the first nozzle seat for supporting the first ejector so as to be suspended above the cavity of the base, the nozzle structure further comprises at least two connecting rods, the root ends of the connecting rods are connected to the inner wall surface of the annular wall, and the free ends of the connecting rods extend to the center of the annular wall and are connected with the first free part of the first nozzle seat.
In order to premix the fuel gas before the fuel gas can better enter the first gas mixing chamber through the first injection channel under the action of the first injector, and directly mix the fuel gas with primary air uniformly through a peripheral cavity at the periphery of the first injection channel, the invention also provides the following scheme: the first injection passage is of a cylindrical structure with openings at the upper and lower parts, the lower end inlet of the first injection passage is communicated with the concave cavity of the base and is opposite to the first ejector, and the upper end outlet of the first injection passage is communicated with the first gas mixing chamber; a peripheral cavity is defined between the outer wall surface of the cylinder and the inner ring body, the upper end of the peripheral cavity is sealed as a blind end, and the lower end opening of the peripheral cavity is communicated with the concave cavity. Thereby can make the gas of central cavity more directly carry out the mix of primary air with the primary air after the periphery cavity is even under the effect of first sprayer, avoid gas and primary air to strike each other by the confluence of equidirectional not, when further having improved the degree of consistency that primary air and gas mix, improvement primary air inhalation rate, can also effectively reduce the kinetic energy loss, thereby make the flame of combustor short, even and powerful, defects such as yellow flame, tempering can not appear.
Furthermore, the blind end of the upper end of the peripheral cavity, which is sealed, is lower than the upper end outlet of the first injection passage, and the lower end edge of the peripheral cavity is lower than the lower end edge of the peripheral wall of the first injection passage. This design can make the low reaches of periphery cavity carry out the premixing of primary air and gas earlier, and the primary air and the gas after premixing are inhaled and carry out the mixing of second time again behind the first gas mixing chamber with the help of the low pressure that the venturi effect that obtains in the first injection passageway self caused again, have effectively improved the primary air and the gas mixing degree of consistency.
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 further improve the mixing uniformity of primary air and gas, the first cover body is internally provided with a groove which is concave from bottom to top and is used for the first injection passage to extend into, the groove and the inner ring body jointly enclose to form the first gas mixing chamber, and a radial venturi cavity is enclosed between the lower surface of the top wall of the groove and the upper end of the first injection passage. Meanwhile, the height of the combustor can be effectively reduced by the radial Venturi cavity, and a gas mixing chamber with a Venturi effect cavity, such as an axial Venturi cavity, can be adopted.
In order to realize the play fire of interior ring body stably, the up end of interior ring body has a plurality of interior fire recesses and the steady fire recess of interval setting around the radial shaping of circumferencial direction, first lid respectively with interior fire recess and interior steady flame recess form interior fire hole and interior steady flame hole.
In order to prevent the overflowing liquid from entering the inner fire hole and the inner flame stabilizing hole, the first cover body horizontally and downwards extends to form a first convex ring, and the first convex ring forms a protective umbrella of the inner fire hole and the inner flame stabilizing hole.
Similarly, for the purpose of forming two annular flames at intervals inside and outside the outer ring body to achieve uniformity of the burner heating pot bottom, a plurality of main flame grooves and first main flame stabilizing grooves which are arranged at intervals are formed in the outer end face of the outer ring body in the radial direction around the circumferential direction, and the second cover body and the first main flame stabilizing grooves form first main flame holes and first flame stabilizing holes respectively.
Furthermore, at least two second main flame holes are formed in the inner side wall, located on the inner side, of the outer ring body along the circumferential direction, a plurality of second main flame stabilizing grooves are formed in the inner end face of the outer ring body in the radial direction around the circumferential direction at intervals, and the second cover body and the second main flame stabilizing grooves form second flame stabilizing holes respectively.
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 first main fire hole, a first flame stabilizing hole, a second main fire hole and a second main flame stabilizing groove.
Compared with the prior art, the invention has the advantages that 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 thermocouple can be ensured not to be excessively heated or excessively heated, the thermocouple is not only heated sufficiently to generate enough thermoelectric force, but also can not burn out the thermocouple due to the excessively large contact with the flame of the fire protection hole, and simultaneously the thermocouple can be ensured to have sufficient fuel gas, the success rate of fire protection is effectively improved, and simultaneously, the primary air and the fuel gas can be transmitted from the first gas mixing chamber to the transmission channel of the flow guide chamber, so that the thermocouple can be outwards moved out of the second gas mixing chamber during installation, and the reduction of fire protection sensitivity of the thermocouple due to slow heat dissipation when the thermocouple is installed on the inner ring fire cover is avoided, and the invention also provides the base with the interlayer structure, equivalently, the length of a gas channel in the base is increased, the mixing uniformity of gas and primary air is further increased, and 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 cannot 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.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 7, the burner for gas cookers according to the preferred embodiment of the present invention can be applied to conventional top intake burners as well as italian savart burners such as europe, the burner for gas range includes a base 1 having a sandwich structure, the base 1 comprises a cavity 11 in the center and a peripheral chamber 12 surrounding the cavity 11, the top wall of the peripheral chamber 12 having at least two through holes 121, e.g. four, in the circumferential direction, a first connecting body 2 arranged on the base 1, the first connecting body 2 comprises a plate body, the plate body is provided with a central hole 21, the hole wall of the central hole 21 protrudes upwards to form a ring-shaped wall 211, the ring-shaped wall 211 corresponds to the concave cavity 11, four vertical first gas channels 22 are arranged at intervals along the circumferential direction on the periphery of the plate body, and the lower ends of the first gas channels 22 are supported on the top ends of the hole walls of the through holes 121 corresponding to the first gas channels 22; the fuel gas burner also comprises a second connecting body 3 arranged on the first connecting body 2, wherein the second connecting body 3 comprises an inner ring body 31 and an outer ring body 32 which are concentrically arranged at intervals, a vertical first injection passage 311 is arranged at the center of the inner ring body 31, a second fuel gas passage 321 communicated with the first fuel gas passage 22 is arranged on the outer ring body 32 along the circumferential direction, and a first injector 40 is matched with the first injection passage 311; wherein, a first cover body 5 is arranged on the second connector 3, and a first air mixing chamber 51 which is positioned at the center and communicated with the first injection channel 311 is formed between the second connector 3 and the first cover body 5; and a second cover 7 disposed on the second connector 3, wherein a second gas mixing chamber 71 located at the periphery of the first gas mixing chamber 51 and communicated with the first gas channel 22 and the second gas channel 321 is formed between the second cover 7 and the outer ring 32, in order to make the thermocouples have relatively independent "fire protection chambers", which can ensure that the thermocouple has a heating surface area contacting with the flame not too large or too small, the thermocouple is not only heated enough to generate enough thermal potential, but also has no too large contact with the flame of the fire protection hole to burn out the thermocouple, and at the same time, the thermocouple has enough gas, so as to effectively improve the success rate of fire protection, in the embodiment, a flow guide chamber 711 and a transmission channel for transmitting the primary air and gas from the first gas mixing chamber 51 to the flow guide chamber 711 are disposed relatively separated from each other in the second gas mixing chamber 71, wherein the connection between the second gas channel 321 and the second nozzle 201 can use any one of the prior art to communicate the outside with the second gas channel 51 The outer ring of the air passage 321 is connected to the ejector pipe 200.
In order to enhance the connection between the first air mixing chamber 51 and the second air mixing chamber 71, the second connector 3 has at least two connecting ribs 9, such as four, connecting the first air mixing chamber 51 and the second air mixing chamber 71 at intervals along the circumferential direction, and when the connection between the first air mixing chamber 51 and the second air mixing chamber 71 is skillfully realized, one of the connecting ribs 9, i.e., the first connecting rib 90, is hollow to form a transmission channel, the first end 901 of the first connecting rib 90 is communicated with the flow guide chamber 711, and the second end 902 is communicated with the first air mixing chamber 51. In addition, the first nozzle of the present invention can be directly disposed in the cavity 11 of the base 1, or can be connected to the first connecting body 2 located on the base 1 through the first nozzle holder 4, and "suspend" above the cavity 11 of the base 1, that is, the first nozzle holder 4 is included, the first root 41 of the first nozzle holder 4 is connected to the inner wall surface of the annular wall 211, and the first free portion 42 of the first nozzle holder 4 extends to the center of the annular cavity 212 to connect with the first injector 40, the first injector 40 faces the first injection channel 311 and has a gap with the center position of the bottom of the cavity 11, the first injector 40 is connected to the first connecting body 2 located on the base 1 through the first nozzle holder 4, and "suspends" above the cavity 11 of the base 1, once the overflow enters the cavity 11 of the base 1, the normal use of the burner will not be affected by the blockage of the injector, meanwhile, the first connecting body 2 is detachably connected with the base 1, so that maintenance and cleaning of a user are facilitated. In order to strengthen the supporting force of the first nozzle holder 4 for supporting the first injector 40 to be suspended over the cavity 11 of the base 1, the nozzle holder further comprises at least two connecting rods 6, wherein the root ends of the connecting rods 6 are connected to the inner wall surface of the annular wall 211, and the free ends of the connecting rods 6 extend to the center of the annular wall 211 and are connected with the first free part 42 of the first nozzle holder 4.
In order to premix the fuel gas before the fuel gas can better enter the first air mixing chamber 51 through the first injection passage 311 under the action of the first injector 40, and more directly mix the fuel gas with the primary air uniformly through the peripheral cavity 30 at the periphery of the first injection passage 311, so as to mix the primary air, the following scheme is further provided for the embodiment: the first injection passage 311 is of a cylindrical structure with openings at the upper and lower parts, a lower inlet 3111 of the first injection passage 311 is communicated with the cavity 11 of the base 1 and opposite to the first ejector 40, and an upper outlet 3112 of the first injection passage 311 is communicated with the first gas mixing chamber 51; the outer wall of barrel encloses into between the internal ring 31 and has become peripheral cavity 30, the upper end of peripheral cavity 30 seals to the blind end, the lower extreme opening 301 of peripheral cavity 30 is linked together with cavity 11, thereby can make the gas of central cavity more directly carry out the mixing of primary air with the primary air after peripheral cavity 30 is even under the effect of first sprayer 40, avoid gas and primary air to strike each other by the confluence of equidirectional not, the degree of consistency that primary air and gas mix has further been improved, when improving the primary air inhalation, can also effectively reduce the kinetic energy loss, thereby make the flame of combustor short, even and powerful, can not appear defects such as yellow flame, tempering. Further, the closed end of the upper end of the peripheral cavity 30 is lower than the upper end outlet 3112 of the first injection passage 311, the lower end edge of the peripheral cavity 12 is lower than the lower end edge of the peripheral wall of the first injection passage 311, the design enables the downstream of the peripheral cavity 30 to pre-mix primary air and fuel gas, and then the pre-mixed primary air and fuel gas are sucked into the first gas mixing chamber 51 and then mixed for the second time by means of low pressure caused by the venturi effect obtained in the first injection passage 311, so that the mixing uniformity of the primary air and the fuel gas is effectively improved.
In order to prevent the overflow from entering the cavity 11, the sealing plate 10 is further provided below the first connecting rib 90, the lower sealing plate 10 partially forms the bottom wall of the first connecting rib 90, the lower sealing plate 10 has a central hole 104 at the central position, the outer peripheral edge of the lower sealing plate 10 extends in the horizontal direction and can cover the cavity 11, and the outer peripheral edge of the lower sealing plate 10 is further provided with a notch 103 for the second gas channel 321 to pass through. Meanwhile, in order to separate the primary air channel 101 and the secondary air channel 102 and prevent mutual interference between the primary air and the secondary air during the supplement, a ring of air channels communicated with the outside are formed between the first connecting body 2 and the second connecting body 3, and the lower sealing plate 10 separates the air channels into the primary air channel 101 located below the lower sealing plate 10 and the secondary air channel 102 located above the upper sealing plate. The primary air channel 101 may be formed by any one of the prior art pipes for communicating the outside with the cavity 11 of the base 1, and may also be formed in such a manner that the primary air channel 101 is circumferentially arranged along the first connecting body 2 at intervals, and the primary air channel 101 is used for communicating the cavity 11 with the outside to introduce primary air into the cavity 11 of the base 1 from the outside. Wherein the interval between the adjacent first gas passages 22 under the lower closure plate 10 constitutes the primary air passage 101 disposed at the above interval. Similarly, the secondary air channel 102 can be formed by any of the prior art ducts connecting the outside to the plenum 100, and can be formed as follows: an air supply cavity 100 is formed between the first air mixing chamber 51 and the second air mixing chamber 71, and secondary air passages 102 are circumferentially arranged along the second connecting body 3 at intervals, the secondary air passages 102 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, wherein the interval between adjacent second air passages 321 on the upper sealing plate constitutes the secondary air passages 102 arranged at intervals.
Specifically, the setting of first gas mixing chamber 51 preferably is for forming inside first lid 5, in order to further improve the mixed degree of consistency of primary air and gas, first lid 5 is inside to have from bottom to top concave and supply first draw penetrate the recess 50 that passageway 311 stretches into, and this recess 50 encloses with interior annular 31 and establishes jointly and constitute first gas mixing chamber 51, encloses into radial venturi chamber between recess roof lower surface and the upper end of first drawing penetrate passageway 311. Meanwhile, the height of the combustor can be effectively reduced by the radial Venturi cavity, and a gas mixing chamber with a Venturi effect cavity, such as an axial Venturi cavity, can be adopted. Because the first channel 311 that draws is directly from perpendicular 90 transition to the level setting with the radial venturi chamber of first gas mixing chamber 51, other parts of joining have been saved to reduce local resistance loss, can let gas and primary air mixture reduce resistance loss when spouting first gas mixing chamber 51, draw more smoothly, smooth and smooth transition of drawing, in order to realize the play fire of interior ring member 31 stable, the up end of interior ring member 31 has a plurality of interior fire recesses 312 and the steady fire recess 313 of interval setting around the radial shaping of circumferencial direction, first lid 5 forms interior fire hole and interior steady flame hole with interior fire recess 312 and steady fire recess 313 respectively. In order to prevent the overflow liquid from entering the inner fire hole and the inner flame stabilizing hole, the first cover body 5 extends horizontally and downwards to form a first convex ring 52, and the first convex ring 52 forms a protective umbrella of the inner fire hole and the inner flame stabilizing hole. Similarly, for the purpose of forming two annular flames at intervals inside and outside the outer ring body 32 to achieve uniformity of the burner heating pan bottom, a plurality of main flame grooves 322 and first main flame stabilizing grooves 323 which are arranged at intervals are radially formed on the outer end face of the outer ring body 32 around the circumferential direction, the groove depth of the first main flame grooves is larger than that of the first main flame stabilizing grooves 323, supplementary gaps of secondary air can be formed, and the second cover body 7 and the first main flame grooves 322 and the first main flame stabilizing grooves 323 respectively form first main flame holes and first flame stabilizing holes. At least two second main flame holes 324 are formed in the inner side wall, located on the inner side, of the outer ring body 32 along the circumferential direction, a plurality of second main flame stabilizing grooves 325 are formed in the inner end face of the outer ring body 32 in the radial direction around the circumferential direction at intervals, and the second cover body 7 and the second main flame stabilizing grooves 325 form second flame stabilizing holes respectively. In order to prevent the overflow from entering into each fire hole of the outer ring body 32, the inner and outer edges of the second cover 7 are vertically or obliquely extended downward with a second bead 72 and a third bead 73 to form a protective umbrella with a first main fire hole, a first flame stabilizing hole, a second main fire hole 324 and a second main flame stabilizing groove 325, respectively.
Referring to fig. 6, as described above, due to the low pressure caused by the gas injection from the first injector 40 to the first injection passage 311 and the first air mixing chamber 51 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 101, then the primary air is introduced into the outer peripheral cavity 30 by the kinetic energy of the gas itself, the primary air and the gas are premixed, and finally further mixed in the radial venturi effect cavity of the first air mixing chamber 51, and finally the mixed primary air and gas flow out through the inner flame holes and the inner flame stabilizing holes formed by the first cover 5 and the inner flame stabilizing grooves 312 and 313, respectively, and are ignited together with the secondary air of the external environment, so as to form the inner flame. The second connector 3 further comprises an outer circumference fire which can be controlled by a user independently, primary air and fuel gas required by the outer circumference fire are input into the second gas mixing chamber 71 through the outer circumference chamber 12, the first fuel gas channel 22 and the second fuel gas channel 321 of the base 1 independently from the first injection channel 311 by the second injection channel positioned outside the base 1, and meanwhile, the second gas mixing chamber 71 is separated from the first gas mixing chamber 51, so that fluid separation of the second gas mixing chamber 71 and the first gas mixing chamber 51 is realized, and then the secondary air and fuel gas can be supplied independently to allow the user to control the inflow of fuel mixture entering the first injection channel 311 and the outer ring injection pipe 200 independently, if the sizes of the outer circumference fire and the center fire are required to be adjusted, an adjusting valve connected to the air inlet end of the input channel is adjusted.

Claims (15)

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 cavity (11) positioned in the center and a peripheral chamber (12) surrounding the cavity (11), and the top wall of the peripheral chamber (12) is provided with at least two through holes (121) along the circumferential direction;
the first connecting body (2) is arranged on the base (1), the first connecting body (2) comprises a plate body, the plate body is provided with a central hole (21), the hole wall of the central hole (21) protrudes upwards to form a ring of annular wall (211), the annular wall (211) corresponds to the concave cavity (11), at least two vertical first gas channels (22) are arranged on the periphery of the plate body at intervals along the circumferential direction, and the lower ends of the first gas channels (22) are supported on the top ends of the hole walls of the through holes (121);
the second connecting body (3) is arranged on the first connecting body (2), the second connecting body (3) comprises an inner ring body (31) and an outer ring body (32) which are concentrically arranged at intervals, a vertical first injection passage (311) is arranged at the center of the inner ring body (311), a second gas passage (321) communicated with the first gas passage (22) is arranged on the outer ring body (32) along the circumferential direction, and the first injection passage (311) is matched with a first injector (40);
the first cover body (5) is arranged on the second connecting body (3), and a first air mixing chamber (51) which is positioned in the center and communicated with the first injection channel (311) is formed between the first cover body and the second connecting body (3); and
a second cover body (7) which is arranged on the second connecting body (3) and forms a second gas mixing chamber (71) which is positioned at the periphery of the first gas mixing chamber (51) and communicated with the first gas channel (22) and the second gas channel (321) with the outer ring body (32);
a flow guide chamber (711) which is provided in the second air mixing chamber (71) in a relatively spaced manner; and
the transmission channel is used for transmitting primary air and fuel gas from the first air mixing chamber (51) to the flow guide chamber (711), the second connecting body (3) is provided with at least two connecting ribs (9) for connecting the first air mixing chamber (51) and the second air mixing chamber (71) at intervals along the circumferential direction, one of the connecting ribs (9), namely the first connecting rib (90), is hollow so as to form the transmission channel, the first end (901) of the first connecting rib (90) is communicated with the flow guide chamber (711), and the second end (902) is communicated with the first air mixing chamber (51).
2. Burner for gas cooktops according to claim 1, characterized in that: the nozzle structure also comprises a first nozzle seat (4), wherein a first root part (41) of the first nozzle seat (4) is connected to the inner wall surface of the annular wall (211), a first free part (42) of the first nozzle seat (40) extends to the center of the annular cavity (212) to be connected with a first ejector (40), and the first ejector (40) faces the first injection channel (311) and is spaced from the central position of the bottom of the cavity (11).
3. Burner for gas cooktops according to claim 2, characterized in that: the nozzle structure further comprises at least two connecting rods (6), wherein the root ends of the connecting rods (6) are connected to the inner wall surface of the annular wall (211), and the free ends of the connecting rods (6) extend to the center of the annular wall (211) and are connected with the first free part (42) of the first nozzle seat (4).
4. The burner for a gas range according to any one of claims 1 to 3, wherein: the first injection passage (311) is of a cylindrical structure with openings at the upper and lower parts, a lower end inlet (3111) of the first injection passage (311) is communicated with the cavity (11) of the base (1) and is opposite to the first ejector (40), and an upper end outlet (3112) of the first injection passage (311) is communicated with the first gas mixing chamber (51); a peripheral cavity (30) is defined between the outer wall surface of the cylinder structure and the inner ring body (31), the upper end of the peripheral cavity (30) is sealed to be a closed end, and a lower end opening (301) of the peripheral cavity (30) is communicated with the concave cavity (11).
5. Burner for gas cooktops according to claim 4, characterized in that: the closed end of the upper end of the peripheral cavity (30) is lower than the upper end outlet (3112) of the first injection passage (311), and the lower end edge of the peripheral cavity (12) is lower than the lower end edge of the peripheral wall of the first injection passage (311).
6. Burner for gas cooktops according to claim 5, characterized in that: still including being located lower shrouding (10) under first splice bar (90), shrouding (10) local constitution down the diapire of first splice bar (90), the central point of shrouding (10) down has mesopore (104), the periphery of shrouding (10) is followed then and is extended and can cover on the horizontal direction recess (11) down the periphery of shrouding (10) is followed and still has confession breach (103) that second gas channel (321) passed.
7. Burner for gas cooktops according to claim 6, characterized in that: a circle of air channels communicated with the outside are formed between the first connecting body (2) and the second connecting body (3), and the lower sealing plate (10) divides the air channels into primary air channels (101) positioned below the lower sealing plate (10) and secondary air channels (102) positioned above the upper sealing plate.
8. Burner for gas cooktops according to claim 7, characterized in that: the primary air channels (101) are arranged at intervals along the circumference of the first connecting body (2), and the primary air channels (101) 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.
9. Burner for gas cooktops according to claim 8, characterized in that: an air supplementing cavity (100) is formed between the first air mixing chamber (51) and the second air mixing chamber (71), the secondary air channel (102) is arranged along the second connecting body (3) in a circumferential direction at intervals, and the secondary air channel (102) 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.
10. Burner for gas cooktops according to any one of claims 5 to 9, characterized in that: the first cover body (5) is internally provided with a groove (50) which is concave from bottom to top and is used for the first injection passage (311) to extend into, the groove (50) and the inner ring body (31) are jointly surrounded to form the first air mixing chamber (51), and a radial Venturi cavity is surrounded between the lower surface of the top wall of the groove and the upper end of the first injection passage (311).
11. Burner for gas cooktops according to claim 10, characterized in that: the upper end face of the inner ring body (31) is radially formed around the circumferential direction to be provided with a plurality of inner flame grooves (312) and flame stabilizing grooves (313) which are arranged at intervals, and the first cover body (5) and the inner flame grooves (312) and the flame stabilizing grooves (313) form inner flame holes and inner flame stabilizing holes respectively.
12. Burner for gas cooktops according to claim 11, characterized in that: the first cover body (5) is horizontally extended downwards to form a first convex ring (52), and the first convex ring (52) forms a protective umbrella with the inner fire hole and the inner flame stabilizing hole.
13. The burner for a gas range according to any one of claims 11 to 12, wherein: the outer end face of the outer ring body (32) is radially formed with a plurality of main fire grooves (322) and first main fire stabilizing grooves (323) which are arranged at intervals along the circumferential direction, and the second cover body (7) and the first main fire grooves (322) and the first main fire stabilizing grooves (323) form first main fire holes and first flame stabilizing holes respectively.
14. Burner for gas cooktops according to claim 13, characterized in that: at least two second main fire holes (324) are formed in the inner side wall, located on the inner side, of the outer ring body (32) along the circumferential direction, a plurality of second main fire stabilizing grooves (325) are formed in the inner end face of the outer ring body (32) in the radial direction around the circumferential direction at intervals, and second cover bodies (7) and the second main fire stabilizing grooves (325) form second fire stabilizing holes respectively.
15. Burner for gas cooktops according to claim 14, characterized in that: and a second convex ring (72) and a third convex ring (73) vertically or obliquely extend downwards from the inner side edge and the outer side edge of the second cover body (7) to respectively form a protective umbrella with a first main fire hole, a first flame stabilizing hole, a second main fire hole (324) and a second main flame stabilizing groove (325).
CN201811458690.XA 2018-11-30 2018-11-30 Burner for gas stove Active CN111256125B (en)

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CN201811458690.XA CN111256125B (en) 2018-11-30 2018-11-30 Burner for gas stove

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CN111256125B true CN111256125B (en) 2021-11-12

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2479366Y (en) * 2001-04-20 2002-02-27 广东美的集团股份有限公司 Multi-nozzle burner
CN201593789U (en) * 2010-01-14 2010-09-29 四川瑞鑫电器有限公司 Atmospheric burner
CN202166056U (en) * 2011-06-21 2012-03-14 美的集团有限公司 Combustor for gas cooking utensils
CN103175203A (en) * 2013-03-06 2013-06-26 宁波方太厨具有限公司 Upper air inlet burner
CN206540132U (en) * 2017-01-24 2017-10-03 青岛海尔洗碗机有限公司 A kind of anti-dry burner and gas-cooker
CN206695132U (en) * 2017-04-13 2017-12-01 青岛海尔洗碗机有限公司 A kind of burner fire lid, burner and gas-cooker
CN108870389A (en) * 2017-05-15 2018-11-23 博西华电器(江苏)有限公司 Fire cover, burner, burner and the gas-cooker of burner for gas kitchen range

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2479366Y (en) * 2001-04-20 2002-02-27 广东美的集团股份有限公司 Multi-nozzle burner
CN201593789U (en) * 2010-01-14 2010-09-29 四川瑞鑫电器有限公司 Atmospheric burner
CN202166056U (en) * 2011-06-21 2012-03-14 美的集团有限公司 Combustor for gas cooking utensils
CN103175203A (en) * 2013-03-06 2013-06-26 宁波方太厨具有限公司 Upper air inlet burner
CN206540132U (en) * 2017-01-24 2017-10-03 青岛海尔洗碗机有限公司 A kind of anti-dry burner and gas-cooker
CN206695132U (en) * 2017-04-13 2017-12-01 青岛海尔洗碗机有限公司 A kind of burner fire lid, burner and gas-cooker
CN108870389A (en) * 2017-05-15 2018-11-23 博西华电器(江苏)有限公司 Fire cover, burner, burner and the gas-cooker of burner for gas kitchen range

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