CN111256137B - Burner for gas stove - Google Patents

Burner for gas stove Download PDF

Info

Publication number
CN111256137B
CN111256137B CN201811460174.0A CN201811460174A CN111256137B CN 111256137 B CN111256137 B CN 111256137B CN 201811460174 A CN201811460174 A CN 201811460174A CN 111256137 B CN111256137 B CN 111256137B
Authority
CN
China
Prior art keywords
gas
wall
burner
mixing chamber
channel
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.)
Active
Application number
CN201811460174.0A
Other languages
Chinese (zh)
Other versions
CN111256137A (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 CN201811460174.0A priority Critical patent/CN111256137B/en
Publication of CN111256137A publication Critical patent/CN111256137A/en
Application granted granted Critical
Publication of CN111256137B publication Critical patent/CN111256137B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 device comprises a base, a second connecting body arranged on the base, wherein the second connecting body comprises an inner table body positioned in the center, a first injection channel inclined relative to the horizontal plane is arranged in the center of the inner table body, and a first injector and a first fire cover which are arranged in the base; the first fire cover comprises a top wall and an outer ring wall, wherein at least two inner fire holes communicated with the first gas mixing chamber are formed in the outer ring wall at intervals along the circumferential direction, the first wall surface of the outer ring wall below the inner fire holes is partially inwards contracted along the radial direction, and an inverted L-shaped flame stabilizing channel is formed at the junction of the outer ring wall, the first wall surface and the convex wall.

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 with good flame stabilizing effect 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 effectively improves the mixing uniformity of primary air and gas, in view of the above-mentioned current state of the art.
The fifth 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:
a base;
the second connecting body is arranged on the base and comprises an inner table body positioned in the center, the top end of the inner table body is provided with a circle of convex wall protruding upwards, and the center of the inner table body is provided with a first injection channel inclined relative to the horizontal plane;
the first ejector is arranged in the base and opposite to the first injection channel; and
the first fire cover 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 fire cover and the inner table body; 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 communicated with the first gas mixing chamber are formed in the outer ring wall at intervals along the circumferential direction, a first wall surface of the outer ring wall below the inner fire holes is locally and inwards contracted along the radial direction, an inverted L-shaped flame stabilizing channel is formed at the junction of the outer ring wall, the first wall surface and the convex wall, and an inner flame stabilizing hole communicated with the first gas mixing chamber and the flame stabilizing channel is formed in the first wall surface.
In order to quickly facilitate the formation of an inverted L-shaped flame stabilizing channel at the junction of the outer ring wall, the first wall surface and the convex wall when the first fire cover is adapted to the inner platform body of the second connector, the lower end surface of the first wall surface is radially and outwardly extended with a circle of convex edge, the convex edge abuts against the convex wall under the condition that the first fire cover is arranged on the second connector, so that a first gap is formed between the first wall surface and the convex wall, the first gap forms a vertical channel of the flame stabilizing channel, a second gap is formed between the outer ring wall and the convex wall, and the second gap forms a transverse channel of the flame stabilizing channel.
In order to provide convenience for users, the inner ring fire and the outer ring fire can be used by the combustor, the outer ring fire can also be used independently, particularly outside the combustor, the second connecting body further comprises an outer ring body arranged at intervals with the inner platform body, the outer ring body is provided with at least two vertical second gas channels at intervals along the circumferential direction, a second cover body is further arranged on the second connecting body, and a second gas mixing chamber located on the periphery of the first gas mixing chamber and communicated with the second gas channels is formed between the second cover body and the outer ring body.
In order to satisfy the requirement that the gas fire power of the burner is regulated and controlled by a valve, an inner ring fire and an outer ring fire can be simultaneously used, an inner ring fire can also be independently used, the flame in the circumferential directions of the center and the outside basically has no turbulence and interference, and simultaneously has the cooking function of big and small fires, preferably, the base is of a sandwich structure and comprises a concave cavity positioned in the center and a peripheral cavity surrounding the concave cavity, the top wall of the peripheral cavity is provided with at least two through holes along the circumferential direction, a first connecting body is arranged between the base and the second connecting body, the first connecting body comprises a plate body, the plate body is provided with a central hole, the hole wall of the central hole is upwards protruded 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 outer periphery of the plate body along the circumferential direction at intervals, and the lower ends of the first gas channels are supported on the top ends of the hole walls of the through holes, the second gas channel is communicated with the first gas channel. The second gas channel and the second nozzle can be connected by any one of the outer ring injection pipes in the prior art, which is communicated with the outside and is connected with the second gas channel.
The invention also solves the problem that the normal use of the burner is easily influenced by the blockage of the ejector once the overflowing liquid enters the concave cavity of the base, and the burner further comprises a first nozzle seat, wherein the first root part of the first nozzle seat is connected to the first connecting body, the first free part of the first nozzle seat is provided with the first ejector, and the first ejector extends into the annular cavity and is opposite to the first injection channel. 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.
The present invention provides the following solutions to solve the second technical problem: the second gas mixing chamber is relatively provided with a flow guide chamber in an isolated manner, the part of the inner platform body outside the first injection passage is provided with flow guide holes, and the second gas mixing chamber further comprises a transmission passage for transmitting primary air and fuel gas from the first gas mixing chamber to the flow guide chamber through the flow guide holes. The thermocouple is provided with the relatively independent 'fire protection cavity' through the diversion chamber, so that the heating area of the contact between the thermocouple and the flame can be ensured not to be too large or too small, the thermocouple is heated sufficiently to generate sufficient thermoelectric force, the thermocouple cannot be burnt out due to too large contact with the flame of the fire protection hole, and meanwhile, the thermocouple can be ensured to have sufficient fuel gas, and the success rate of fire protection is effectively improved.
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 realize the fire stability of the inner ring body, a first convex ring extends horizontally and downwards from the top wall of the first cover body, 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 fire holes are formed in the inner side wall, located on the inner side, of the outer ring body along the circumferential direction.
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 central position of the inner platform body is provided with the first injection channel inclined relative to the horizontal plane, so that the first injection channel can be longer without changing the height of the whole burner, but the air outlet of the first injection channel is directly connected with the first fire cover, the primary air and fuel gas are easy to outgas too fast under the condition of reducing the kinetic energy loss, the inner fire hole of the first fire cover is easy to separate from the flame, the inverted L-shaped flame stabilizing channel can play the role of stabilizing the flame on one hand, on the other hand, overflowed liquid enters the bending part of the flame stabilizing channel and is easy to remain at the bending part of the flame stabilizing channel, the blockage of the air inlet of the flame stabilizing channel communicated with the first air mixing chamber is avoided, the flame stabilizing effect of the flame stabilizing channel is obviously improved, in addition, the flame stabilizing channel is formed by butt joint of the outer ring wall of the first fire cover and the first wall and the convex wall at the junction, has the function of conveniently cleaning the overflowing liquid.
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 diagram of a first fire cover in the 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 8, as a preferred embodiment of the present invention, the burner of the gas cooker is suitable for both a conventional upper air inlet burner and an italian savart burner in europe, and the burner for the gas cooker includes a base 1, a second connecting body 2 disposed on the base 1, the second connecting body 2 includes an inner stage 21 located at the center, the top end of the inner stage 21 has a ring of convex wall 211 protruding upward, the center of the inner stage 21 has a first injection channel 212 inclined to the horizontal plane, a first injector 20 disposed in the base 1 and opposite to the first injection channel 212, and a first fire lid 3 disposed on the second connecting body 2, and a first air mixing chamber 31 located at the center and communicated with the first injection channel 212 is formed between the first fire lid 3 and the inner stage 21; specifically, the first fire lid 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, a plurality of inner fire holes 331 communicating with the first gas mixing chamber 31 are formed on the outer annular wall 33 at intervals along the circumferential direction, a first wall surface 332 of the outer annular wall 33 below the inner fire holes 331 is partially retracted inward along the radial direction, an inverted L-shaped flame stabilizing passage 333 is formed at the junction of the outer annular wall 33, the first wall surface 332 and the convex wall 211, an inner flame stabilizing hole 3321 communicating with the first gas mixing chamber 31 and the flame stabilizing passage 333 is formed on the first wall surface 332, the central position of the inner stage body 21 has the first injection passage 212 inclined to the horizontal plane, so that the first injection passage 212 can be made longer without changing the height of the whole burner, but the air outlet of the first injection passage 212 is directly connected with the first fire lid 3, and the primary air and gas are easily exhausted too fast under the condition of reduced kinetic energy loss, therefore, the inner fire hole 331 of the first fire cover 3 is easy to be away from the flame, the inverted L-shaped flame stabilizing channel 333 can play a role of stabilizing the flame on one hand, on the other hand, the overflowing liquid enters the flame stabilizing channel 333 and is easy to remain at the bending part of the flame stabilizing channel 333, the blockage of the air inlet of the communication between the flame stabilizing channel 333 and the first gas mixing chamber 31 is avoided, so that the flame stabilizing effect of the flame stabilizing channel 333 is obviously improved, in addition, the flame stabilizing channel 333 is formed by butt joint of the outer ring wall 33 of the first fire cover 3, the first wall surface 332 and the convex wall 211 at the junction, and the overflowing liquid cleaning is convenient. In order to quickly and conveniently form the flame stabilizing channel 333 with an inverted L shape at the intersection of the outer ring wall 33, the first wall surface 332 and the convex wall 211 when the first fire cover 3 is fitted on the inner platform body 21 of the second connecting body 2, the lower end surface of the first wall surface 332 is extended with a circle of convex edge 3322 along the radial direction, in the state that the first fire cover 3 is arranged on the second connecting body 2, the convex edge 3322 is abutted against the convex wall 211, so that a first gap 3323 is formed between the first wall surface 332 and the convex wall 211, the first gap 3323 forms a vertical channel of the flame stabilizing channel 333, a second gap 3324 is formed between the outer ring wall 33 and the convex wall 211, and the second gap 3324 forms a transverse channel of the flame stabilizing channel 333.
In this embodiment, in order to facilitate users to satisfy the requirement that the burner can use the inner and outer annular flames, or the outer annular flame alone, especially outside, the second connector 2 further includes an outer annular body 22 spaced apart from the inner platform body 21, the outer annular body 22 is circumferentially spaced apart from at least two vertical second gas passages 221, a second cover 4 is further disposed on the second connector 2, and a second gas mixing chamber 41 located at the periphery of the first gas mixing chamber 31 and communicated with the second gas passages 221 is formed between the second cover 4 and the outer annular body 22. In order to satisfy the burner gas fire power controlled by valve adjustment, both inner and outer ring fire can be used, and inner ring fire can be used alone, flame in the circumferential direction of the center and the outside has no turbulence and interference basically, and simultaneously has the cooking function of big and small fire, preferably, the base 1 is a sandwich structure, and comprises a cavity 11 in the center and a peripheral chamber 12 surrounding the cavity 11, the top wall 32 of the peripheral chamber 12 has at least two through holes 121 along the circumferential direction, and a first connecting body 5 is arranged between the base 1 and the second connecting body 2, the first connecting body 5 comprises a plate body, the plate body has a central hole 51, the hole wall of the central hole 51 protrudes upwards to form a ring-shaped wall 511, an annular cavity 512 surrounded by the ring-shaped wall 511 corresponds to the cavity 11, and the periphery of the plate body is provided with at least two vertical first gas channels 513 along the circumferential direction at intervals, the lower ends of the first gas channels 513 are supported on the top ends of the hole walls of the through holes 121, the second gas channel 221 is communicated with the first gas channel 513, and the connection between the second gas channel 221 and the second nozzle 201 can adopt any one of the prior arts to communicate with the outside and be connected with the outer ring injection pipe 200 of the second gas channel 221.
The invention also solves the problem that the normal use of the burner is easily affected by the blockage of the ejector once the overflowing liquid enters the cavity 11 of the base 1, and the invention further comprises a first nozzle holder 6, wherein the first root part 61 of the first nozzle holder 6 is connected to the first connecting body 5, the first free part 62 of the first nozzle holder 6 is provided with a first ejector 20, the first ejector 20 extends into the annular cavity 512 and is opposite to the first injection channel 212, the first ejector 20 is connected to the first connecting body 5 positioned on the base 1 through the first nozzle holder 6 and is 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 is not affected by the blockage of the ejector, and meanwhile, the first connecting body 5 is detachably connected with the base 1, so that the maintenance and the cleaning of a user are facilitated. The invention provides the following solutions for solving the problem of fire protection of the thermocouple: the second air mixing chamber 41 is relatively provided with a flow guide chamber 411 in an isolated manner, the part of the inner stage body 21 outside the first injection passage 212 is provided with a flow guide hole 210, the second air mixing chamber further comprises a transmission passage for transmitting primary air and fuel gas from the first air mixing chamber 31 to the flow guide chamber 411 through the flow guide hole 210, the flow guide chamber 411 enables the thermocouples to be provided with relatively independent 'fire protection cavities', the heating area of the thermocouple contacted with the flame can be ensured not to be too large or too small, the thermocouple is not only heated sufficiently to generate sufficient thermoelectric power, the thermocouple cannot be burnt out due to too large contact with the flame of the fire protection hole, meanwhile, the thermocouple can be ensured to have sufficient fuel gas, and the success rate of fire protection is effectively improved. 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, such as four connecting ribs, arranged between the first air mixing chamber 31 and the second air mixing chamber 41 at intervals along the circumferential direction. In order to achieve the effect of connecting the first air mixing chamber 31 and the second air mixing chamber 41 by the connecting pipe, 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 is communicated with the first air mixing chamber 31.
In order to prevent the overflow from entering 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 51 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 passages 83 may be formed by any of the prior art ducts for communicating the outside with the cavity 11 of the base 1, and may be formed in such a manner that the primary air passages 83 are circumferentially spaced along the first connecting body 5, the primary air passages 83 are 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, and the spaces between the adjacent first gas passages 513 below the lower sealing plate 8 constitute the spaced primary air passages 83. 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.
Finally, in order to achieve the fire-out stabilization of the inner ring body, the top wall 32 of the first fire cover 3 extends horizontally and downwards to form a first convex ring 321, and the first convex ring 321 forms a protective umbrella of the inner fire hole 331 and the inner flame stabilizing hole 3321. Similarly, for the purpose of forming two annular flames at intervals inside and outside the outer ring body 22 to achieve uniformity of the burner heating pan bottom, a plurality of main flame grooves 222 and first main flame stabilizing grooves 223 are formed radially around the circumferential direction on the outer end surface of the outer ring body 22 at intervals, and the second cover body 4 and the first main flame grooves 222 and the first main flame stabilizing grooves 223 form first main flame holes and first flame stabilizing holes 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 into the first injecting passage 212 and the first air mixing chamber 31, the primary air is sucked into the cavity 11 of the base 1 from the outside through the primary air passage 83, the primary air and the gas are premixed, and finally further mixed in the first air 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, thereby forming 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 outer chamber 12, the first fuel gas channel 513 and the second fuel gas channel 221 of the base 1 independently from the first injection channel 212 through the second injection channel located outside the base 1, and 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, and then the primary air and the fuel gas can be supplied independently, so that the user can control the inflow of fuel mixture entering the first injection channel 212 and the second injection channel independently.

Claims (14)

1. A burner for a gas cooker, characterized in that: comprises the following steps:
a base (1);
the second connecting body (2) is arranged on the base (1), the second connecting body (2) comprises an inner table body (21) located in the center, the top end of the inner table body (21) is provided with a circle of convex wall (211) protruding upwards, and the center of the inner table body (21) is provided with a first injection channel (212) inclined relative to the horizontal plane;
the first ejector (20) is arranged in the base (1) and is opposite to the first injection channel (212); and
the first fire cover (3) is arranged on the second connecting body (2), 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 inner table body (21); 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, at least two inner fire holes (331) communicated with the first gas mixing chamber (31) are formed in the outer annular wall (33) at intervals along the circumferential direction, a first wall surface (332) of the outer annular wall (33) below the inner fire holes (331) is partially retracted inwards along the radial direction, an inverted L-shaped flame stabilizing channel (333) is formed at the junction of the outer annular wall (33), the first wall surface (332) and the convex wall (211), and an inner flame stabilizing hole (3321) communicated with the first gas mixing chamber (31) and the flame stabilizing channel (333) is formed in the first wall surface (332); the second connecting body (2) further comprises an outer ring body (22) arranged at intervals with the inner platform body (21), the outer ring body (22) is provided with at least two vertical second fuel gas channels (221) at intervals along the circumferential direction, a second cover body (4) is further arranged on the second connecting body (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 second fuel gas channels (221) is formed between the second cover body (4) and the outer ring body (22); the second air mixing chamber (414) is relatively provided with a flow guide chamber (411) in an isolated manner, the part of the inner stage body (21) outside the first injection passage (212) is provided with a flow guide hole (210), and the second air mixing chamber further comprises a transmission passage for transmitting primary air and fuel gas from the first air mixing chamber (31) to the flow guide chamber (411) through the flow guide hole (210).
2. Burner for gas cooktops according to claim 1, characterized in that: the lower end surface of the first wall surface (332) is provided with a circle of convex edge (3322) extending outwards in the radial direction, the convex edge (3322) abuts against the convex wall (211) under the condition that the first fire cover (3) is arranged on the second connecting body (2), so that a first gap (3323) is formed between the first wall surface (332) and the convex wall (211), the first gap (3323) forms a vertical channel of the flame stabilizing channel (333), a second gap (3324) is formed between the outer ring wall (33) and the convex wall (211), and the second gap (3324) forms a transverse channel of the flame stabilizing channel (333).
3. Burner for gas cooktops according to claim 2, characterized in that: 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), the top of the peripheral chamber (12) is provided with at least two through holes (121) along the circumferential direction, and a first connecting body (5) is arranged between the base (1) and the second connecting body (2), the first connecting body (5) comprises a plate body which is provided with a central hole (51), the wall of the central hole (51) protrudes upwards to form a ring-shaped wall (511), the annular cavity (512) enclosed by the annular wall (511) corresponds to the cavity (11), and the periphery of the plate body is provided with at least two vertical first gas channels (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 second gas passage (221) communicates with the first gas passage (513).
4. Burner for gas cooktops according to claim 3, characterized in that: the nozzle structure is characterized by further comprising a first nozzle holder (6), a first root part (61) of the first nozzle holder (6) is connected to the first connecting body (5), the first ejector (20) is installed on a first free part (62) of the first nozzle holder (6), and the first ejector (20) extends into the annular cavity (512) and is opposite to the first injection channel (212).
5. Burner for gas cooktops according to claim 4, 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.
6. Burner for gas cooktops according to claim 5, 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) is communicated with the first air mixing chamber (31).
7. Burner for gas cooktops according to claim 6, 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.
8. Burner for gas cooktops according to claim 7, 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).
9. Burner for gas cooktops according to claim 8, 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.
10. Burner for gas cooktops according to claim 9, 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.
11. Burner for gas cooktops according to any one of claims 3 to 10, characterized in that: the top wall (32) of the first fire cover (3) is horizontally extended downwards to form a first convex ring (321), and the first convex ring (321) forms a protective umbrella with the inner fire hole (331) and the inner flame stabilizing hole (3321).
12. Burner for gas cooktops according to claim 11, 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.
13. Burner for gas cooktops according to any one of claims 3 to 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.
14. Burner for gas cooktops according to claim 13, 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).
CN201811460174.0A 2018-11-30 2018-11-30 Burner for gas stove Active CN111256137B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811460174.0A CN111256137B (en) 2018-11-30 2018-11-30 Burner for gas stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811460174.0A CN111256137B (en) 2018-11-30 2018-11-30 Burner for gas stove

Publications (2)

Publication Number Publication Date
CN111256137A CN111256137A (en) 2020-06-09
CN111256137B true CN111256137B (en) 2022-03-18

Family

ID=70946596

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811460174.0A Active CN111256137B (en) 2018-11-30 2018-11-30 Burner for gas stove

Country Status (1)

Country Link
CN (1) CN111256137B (en)

Citations (4)

* 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
CN2809442Y (en) * 2005-08-12 2006-08-23 宁波方太厨具有限公司 Tubular burner of gas stove
CN105509056A (en) * 2016-01-27 2016-04-20 上海林内有限公司 Burner for full-upside-inlet gas stove
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9989248B2 (en) * 2015-09-08 2018-06-05 Whirlpool Corporation Premixed stamped inner flames burner with eccentric injection venturi

Patent Citations (4)

* 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
CN2809442Y (en) * 2005-08-12 2006-08-23 宁波方太厨具有限公司 Tubular burner of gas stove
CN105509056A (en) * 2016-01-27 2016-04-20 上海林内有限公司 Burner for full-upside-inlet gas stove
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

Also Published As

Publication number Publication date
CN111256137A (en) 2020-06-09

Similar Documents

Publication Publication Date Title
CN108413397B (en) Burner and burning kitchen tools
CN111964054B (en) Inner ring fire cover for combustor and combustor with inner ring fire cover
CN111121034A (en) Upper air inlet burner and cooker applying same
CN111256126B (en) Burner for gas stove
CN111256125B (en) Burner for gas stove
CN111256127B (en) Burner for gas stove
CN111256137B (en) Burner for gas stove
CN111578280B (en) Upper air inlet double-ring combustor
CN111121027A (en) Upper air inlet burner and cooker applying same
CN209569723U (en) A kind of upper inlet wind type burner
CN111256136B (en) Burner for gas stove
CN111121033A (en) Upper air inlet burner and cooker applying same
CN111121026A (en) Fire cover and upper air inlet burner and stove with same
CA3101040A1 (en) Cooker burner
CN209944322U (en) Upper air inlet burner and cooker applying same
CN110848689A (en) Upper air inlet burner
CN111256138B (en) Burner for gas stove
CN213237520U (en) Upper air inlet burner and cooker applying same
CN111121029A (en) Upper air inlet burner and cooker applying same
CN211372403U (en) Completely upper air inlet type burner
CN112747318B (en) Burner for gas stove
CN210662844U (en) Upper air inlet burner and cooker applying same
CN111121031A (en) Upper air inlet burner and cooker applying same
CN111256119B (en) Burner for gas stove
CN210861194U (en) Efficient gas pot burner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant