CN111256120B - Burner for gas stove - Google Patents

Burner for gas stove Download PDF

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Publication number
CN111256120B
CN111256120B CN201811456710.XA CN201811456710A CN111256120B CN 111256120 B CN111256120 B CN 111256120B CN 201811456710 A CN201811456710 A CN 201811456710A CN 111256120 B CN111256120 B CN 111256120B
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CN
China
Prior art keywords
air
side wall
burner
wall
base
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Application number
CN201811456710.XA
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Chinese (zh)
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CN111256120A (en
Inventor
史丽莎
朱志新
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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 CN201811456710.XA priority Critical patent/CN111256120B/en
Publication of CN111256120A publication Critical patent/CN111256120A/en
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    • 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
    • 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
    • F23D14/66Preheating the combustion air or gas
    • 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention relates to a burner for a gas stove, which comprises a base, an inner ring fire cover arranged on the base and forming a central air mixing chamber with the base, an outer ring fire cover arranged on the base and forming an outer ring air mixing chamber with the base, an air supplementing chamber formed between the central air mixing chamber and the outer ring air mixing chamber, and an air chamber arranged in the base and positioned below the outer ring air mixing chamber, wherein the air chamber is isolated from the outer ring air mixing chamber, the inner side wall of the base is provided with at least two air outlet holes communicated with the air supplementing chamber and the air chamber at intervals along the circumferential direction, the outer side wall of the base is provided with an air inlet hole for external air to flow into the air chamber So as to effectively improve the utilization rate of the fuel gas.

Description

Burner for gas stove
Technical Field
The invention relates to the field of gas cookers, in particular to a burner for a gas cooker.
Background
The primary air coefficient of the existing atmospheric stove burner is generally 0.4-0.7, the premixed air cannot reach the air amount required by complete combustion, and various factors are added, so that certain secondary air supplement is required, and in order to reduce the emission of CO, the secondary air supplement is required to be as sufficient as possible. At present, the mode that the cooking utensils combustor supplyed the air is diversified, generally has the side mode of admitting air and admitting air down, and the side air inlet mode is opened the side air intake at the lateral part of gas mixing chamber promptly, and the outside air carries out the secondary air through this side air intake and supplyes, and the air intake is opened down at the base seat promptly to the mode of admitting air down, and the air of cooking utensils below carries out the secondary air through this air intake down and supplyes. Although the side air intake mode has the advantages of small intake resistance and large intake air amount, the existing side air intake combustor still has the problems as follows: due to the injection effect of combustion hot air flow, secondary air is sucked by the inner fire cover and the outer fire cover through the air mixing chamber side air inlet, the heat load of the inner ring is small, the coefficient of primary air is higher than that of the outer ring, the sucked secondary air is often excessive, the secondary air sucked by the middle ring fire hole of the outer fire cover is insufficient, and further improvement is needed for reasonably distributing the secondary air and simultaneously realizing the sufficient combustion of the inner ring and the outer ring.
In addition, most of fire covers of existing gas cookers generally comprise an inner ring fire cover and an outer ring fire cover, the heating mode of the pot body is basically a mode of combining outer annular flame and inner annular flame, the outer annular flame is far away from the center of the pot bottom relative to the inner annular flame, the outer annular flame is sprayed outwards and cannot intensively heat the bottom of the pot, and smoke formed by combustion cannot stay at the pot bottom for enough time, so that the efficiency is low, resources are wasted, and further improvement is needed.
Disclosure of Invention
A first technical problem to be solved by the present invention is to provide a burner for a gas range capable of providing preheated lateral secondary air to the burner, in view of the above-mentioned prior art.
A second technical problem to be solved by the present invention is to provide a burner for a gas range, which ensures smooth and sufficient supply of secondary air in the lateral direction, in view of the above-mentioned prior art.
The third technical problem to be solved by the present invention is to provide a burner for a gas stove, which has a good secondary air supplement effect for the side intake air of the outer ring fire cover to improve the thermal efficiency, 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 can uniformly heat a pot bottom, in view of the above-mentioned prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: this a combustor for gas-cooker including:
a base;
the inner ring fire cover is arranged on the base, and a central air mixing chamber is formed between the inner ring fire cover and the base;
the outer ring fire cover is also arranged on the base, is positioned at the periphery of the inner ring fire cover, and forms an outer ring gas mixing chamber with the base; an air supplement cavity is formed between the central air mixing chamber and the outer ring air mixing chamber;
the method is characterized in that: the air cavity is arranged in the base and positioned below the outer ring air mixing chamber, and the air cavity is isolated from the outer ring air mixing chamber; at least two air outlets communicated with the air supplementing cavity and the air cavity are formed in the inner side wall of the base at intervals along the circumferential direction, and air inlets for external air to flow into the air cavity are formed in the outer side wall of the base.
In order to ensure that the lateral secondary air supplied to the burner is smooth and sufficient, the air inlet is connected to an external air supply. Preferably the gas supply may be a blower.
In order to leave a space for an air cavity in the base, the air cavity is C-shaped and comprises a C-shaped first outer side wall and a C-shaped first inner side wall, the corresponding end parts of the C-shaped first outer side wall and the C-shaped first inner side wall are respectively connected through a first side wall and a second side wall, the air inlet hole is formed in the first outer side wall, and the air outlet hole is formed in the first inner side wall.
In order to form an outer ring gas channel which is isolated from an air cavity and communicated with an outer ring gas mixing chamber in the base, the air cavity is directly formed in the base, the first outer side wall and the first inner side wall form part of the base, and the second outer side wall of the base except the first outer side wall and the second inner side wall of the base except the first inner side wall, the first side wall and the second side wall jointly enclose the outer ring gas channel communicated with the outer ring gas mixing chamber.
In order to effectively preheat air provided by an air supply part entering an air cavity and provide preheated secondary air for an air supply cavity so as to effectively improve the utilization rate of fuel gas, the invention provides a preferable improvement scheme, wherein a C-shaped partition plate is arranged in the air cavity and divides the air cavity into an air outlet cavity positioned on the inner side and a preheating cavity positioned on the outer side, a preheating piece for preheating the secondary air is accommodated in the preheating cavity, an air inlet of the preheating cavity is directly communicated with the air inlet, an air outlet of the preheating cavity is communicated with the air outlet cavity in a fluid manner, and the air outlet is communicated with the air outlet cavity.
In order to preheat the preheating cavity of the air cavity, the preheating piece is a first fin arranged on the inner surface of the first outer side wall and a second fin arranged on the outer surface of the partition plate, and the second fin and the first fin are arranged in a staggered mode.
In order to increase the preheating path and time of the air and the first fin and the second fin, the outer edges of the first fin and the second fin are arc-shaped.
Furthermore, fire outlets are formed in the wall surface, close to the air replenishing cavity, of the outer ring air mixing chamber at intervals along the circumferential direction, and a flow guide part is arranged on the outer circumferential wall of the inner ring fire cover and can guide secondary air in the air replenishing cavity to the fire outlet area of the outer ring air mixing chamber. The secondary air is divided through the flow guide piece, the inner ring and the outer ring can be fully combusted, the secondary air in the air supply cavity can be prevented from being unreasonably distributed by the flow guide piece, the secondary air is divided through the flow guide piece, the inner ring and the outer ring can be fully combusted, the outer ring fire cover with two rings of fire is particularly suitable for being provided, the secondary air between the inner ring and the outer ring can be prevented from being influenced by each other by the flow guide piece, on the other hand, the secondary air can be effectively supplemented to a ring fire outlet of the two rings of fire of the outer ring fire cover, which is close to the inner ring, the secondary air can be effectively supplemented, the positioning is accurate, the gas combustion efficiency is improved, meanwhile, the heat of the inner ring fire cover can be recycled by the flow guide piece, the secondary air can be preheated, and the heat efficiency of a combustor is improved.
In order to realize that the flow guide part is provided with a fire outlet hole area for guiding secondary air to the outer ring air mixing chamber, the flow guide part comprises a plurality of convex edges protruding from the surface of the outer peripheral wall, wherein the convex edges are arranged along the outer peripheral wall of the inner ring fire cover at intervals.
In order to increase the heat exchange path and the exchange time of the flow guide piece and the inner ring fire cover, an included angle is formed between or is parallel to the central axis of the inner ring fire cover and the single convex edge.
The single convex edge and the central axis of the inner ring fire cover form an included angle, the outer edge of the single convex edge is an arc line, and the whole flow guide piece forms a rotating shape.
In order to realize that the convex edge of the flow guide part can guide secondary air preheated by the flow guide part to rotate to the outer ring fire cover at a certain rotating speed, an included angle is formed between the single air outlet hole and the central axis of the outer ring fire cover, and the included angle is the same as the rotating direction of the single convex edge. So as to increase the heat exchange path and time between the secondary air and the base and improve the heat efficiency.
Furthermore, the outer ring fire cover comprises an annular top wall, and an inner ring wall and an outer ring wall which are vertical or inclined downwards from the inner side edge and the outer side edge of the annular top wall, and the fire outlet holes comprise first fire outlet holes arranged on the inner ring wall and second fire outlet holes which are arranged along the circumferential direction of the annular top wall and are connected with the first fire outlet holes to form a concave-convex structure. The outer ring fire covers the concave-convex structure that first fire outlet and second fire outlet are connected and makes the whole petaling type that is of fire outlet, and this mode of setting can cooperate with the shape of the bottom of a boiler to further make the bottom of a boiler be heated evenly, solved the uneven problem of bottom of a boiler being heated.
Furthermore, the annular top wall is provided with a concave platform which is high outside and low inside and inclines inwards, the concave platform comprises an upper part which is arranged along the outer ring of the annular top wall, the upper part is an arc-shaped curved surface, and the second fire outlet hole is arranged on the upper part. The concave platform is a curved surface which inclines inwards, when liquid overflows from the pot, the liquid can flow into the liquid containing tray through the curved surface which inclines inwards under the action of gravity, the problem that the first fire outlet hole is blocked by the liquid overflowing from the pot is solved, and the second fire outlet hole is positioned at the upper part of the concave platform and can be prevented from being blocked by the liquid overflowing from the pot.
In order to guide the secondary air in the air supply cavity to the concave table more quickly, the concave table comprises a lower part arranged along the inner ring of the annular top wall, and the highest point of the lower part is lower than that of the convex edge.
Further, the inner ring fire lid includes the interior perisporium that the inside and outside interval set up the periphery wall and the top of connecting interior perisporium and periphery wall, interior perisporium, periphery wall and top enclose jointly into have with central gas mixing chamber, interior fire hole has been seted up at the top.
In order to realize the self-stabilizing flame of the inner fire hole, the axis of the inner fire hole and the axis of the inner ring fire cover form an included angle of 45-60 degrees.
In order to realize the supplement of the independent secondary air of the inner fire hole, an air outlet is formed at the top of the inner ring fire cover, a central cavity is formed by the surrounding of the inner peripheral wall, and the center of the base and the central cavity jointly form an air supplement channel which is communicated with the air outlet and is communicated up and down.
Compared with the prior art, the invention has the advantages that the air cavity for the inflow of the outside air is arranged in the base below the outer ring air mixing chamber, so that the outside air can be effectively preheated when entering the air supplementing cavity, and the preheated secondary air can be divided by the air outlet hole to provide the preheated secondary air for the inner ring fire cover and the outer ring fire cover, thereby effectively improving the utilization rate of the fuel gas.
Drawings
FIG. 1 is a schematic view of a burner according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the base of FIG. 1;
FIG. 3 is a cross-sectional view of a portion of the combustor of FIG. 1;
FIG. 4 is a schematic structural diagram of an inner ring fire cover in an embodiment of the invention;
FIG. 5 is a schematic structural diagram of an outer ring fire cover in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 5, the burner for gas range in this embodiment of the present invention comprises a base 1, an inner fire cover 2 disposed on the base 1 and forming a central air mixing chamber 21 with the base 1, and an outer fire cover 3 disposed on the base 1 and located at the periphery of the inner fire cover 2, an outer ring air mixing chamber 31 is formed between the outer ring fire cover 3 and the base 1, an air supplementing chamber 4 is formed between the central air mixing chamber 21 and the outer ring air mixing chamber 31, an air chamber 5 which is arranged in the base 1 and is positioned below the outer ring air mixing chamber 31 is also included, the air chamber 5 is isolated from the outer ring air mixing chamber 31, at least two air outlets 51 communicating the air supplementing chamber 4 with the air chamber 5 are arranged on the inner side wall of the base 1 along the circumferential direction at intervals, and an air inlet 52 for the outside air to flow into the air chamber 5 is arranged on the outer side wall of the base 1. In order to ensure that the lateral secondary air provided to the burner is smooth and sufficient, the air inlet 52 is connected with an external air supply part 50 such as a blower, so that the external air can be effectively preheated when entering the air supplement chamber 4, and the preheated secondary air can be divided by the air outlet 51 to provide preheated secondary air for the inner ring fire cover 2 and the outer ring fire cover 3, thereby effectively improving the utilization rate of the fuel gas.
In order to leave a space for the air chamber 5 in the base 1, the air chamber 5 is C-shaped, the air chamber 5 includes a C-shaped first outer sidewall 53 and a C-shaped first inner sidewall 54, the corresponding end portions of the two are respectively connected by a first sidewall 55 and a second sidewall 56, the air inlet 52 is arranged on the first outer sidewall 53, and the air outlet 51 is arranged on the first inner sidewall 54, wherein the air chamber 5 is directly formed on the base 1, the first outer sidewall 53 and the first inner sidewall 54 form part of the base 1, the outer sidewall of the base 1 except the second outer sidewall 57 of the first outer sidewall 53 and the inner sidewall of the base 1 except the second inner sidewall 58 of the first inner sidewall 54 and the first sidewall 55 and the second sidewall 56 together enclose an outer ring gas channel 11 communicated with the outer ring gas mixing chamber 31, so that an outer ring gas channel 11 isolated from the air chamber 5 and communicated with the outer ring gas mixing chamber 31 can be formed in the base 1, in order to effectively preheat the air supplied by the air supply part 50 entering the air cavity 5 and provide the preheated secondary air to the gas supplementing cavity 4, so as to effectively improve the utilization rate of the fuel gas, the present embodiment provides a preferable scheme, a C-shaped partition plate 6 is arranged in the air cavity 5, the air cavity 5 is divided into an air outlet cavity 501 at the inner side and a preheating cavity 502 at the outer side by the partition plate 6, a preheating member 7 for preheating the secondary air is accommodated in the preheating cavity 502, the air inlet of the preheating cavity 502 is directly communicated with the air inlet 52, the air outlet of the preheating cavity 502 is communicated with the air outlet cavity 501 in fluid, and the air outlet 51 is communicated with the air outlet cavity 501, in the present embodiment, in order to preheat the preheating cavity 502 of the air cavity 5, the preheating member 7 is a first fin 71 arranged on the inner surface of the first outer side wall 53 and a second fin 72 arranged on the outer surface of the partition plate 6, the second fins 72 are arranged to intersect with the first fins 71. In order to increase the preheating path and time between the air and the first and second fins 71 and 72, the outer edges of the first and second fins 71 and 72 are arc-shaped, but other forms such as the columnar preheating member 7 may be used. In addition, in order to avoid the mutual influence of the secondary air between the inner ring and the outer ring, fire holes are formed in the wall surface of the outer ring air mixing chamber 31 adjacent to the air replenishing cavity 4 at intervals along the circumferential direction, the outer circumferential wall 22 of the inner ring fire cover 2 is provided with a flow guide part 8, and the flow guide part 8 can guide the secondary air in the air replenishing cavity 4 to the fire hole area of the outer ring air mixing chamber 31. The secondary air is shunted through the diversion piece 8, the inner ring and the outer ring can be fully combusted, the arrangement of the diversion piece 8 can avoid the phenomenon of unreasonable distribution of the secondary air in the air supply cavity 4, the secondary air is shunted through the diversion piece 8, the inner ring and the outer ring can be fully combusted, the outer ring fire cover 3 with two rings of fire is particularly suitable for being provided, on the one hand, the arrangement of the diversion piece 8 can effectively supplement the secondary air to the two rings of fire of the outer ring fire cover 3, which is close to the inner ring fire outlet, the positioning is accurate, the gas combustion efficiency is improved, meanwhile, the heat of the inner ring fire cover 2 can be recycled through the diversion piece 8, the secondary air can be preheated, and the heat efficiency of a combustor is improved. Specifically, the diversion element 8 comprises a plurality of ribs 81 protruding from the surface of the outer peripheral wall 22 at intervals along the outer peripheral wall 22 of the inner ring fire cover 2. In order to increase the heat exchange path and the exchange time between the flow guide member 8 and the inner fire cover 2, an included angle or a parallel angle is formed between the single convex edge 81 and the central axis of the inner fire cover 2, preferably, the included angle is formed between the single convex edge 81 and the central axis of the inner fire cover 2, the outer edge of the single convex edge 81 is an arc line, the whole flow guide member 8 forms a rotating shape, so that the convex edge 81 of the flow guide member 8 guides secondary air preheated by the flow guide member 8 to rotate to the outer fire cover 3 at a certain rotating speed, the single air outlet 51 and the central axis of the outer fire cover 3 form an included angle which is the same as the rotating direction of the single convex edge 81, the heat exchange path and the exchange time between the secondary air and the base 1 are increased, and the heat efficiency is improved.
This embodiment has still solved the outer loop fire lid 3 that can the even heating bottom of a boiler, this outer loop fire lid 3 is including cyclic annular roof 30 and from the vertical or decurrent inner ring wall 32 and the outer ring wall 33 of slope of the inboard edge and the outside edge of this cyclic annular roof 30, go out the fire hole including set up including on the inner ring wall 32 first go out fire hole 91 and along cyclic annular roof 30 circumference set up with first go out fire hole 91 be concave-convex structure's second go out fire hole 92, first go out fire hole 91 and the concave-convex structure that second goes out fire hole 92 and connect makes out the fire hole wholly be "petal type", this mode of setting can cooperate with the shape of bottom of a boiler, thereby further make the bottom of a boiler be heated evenly, the uneven problem of bottom of a boiler being heated has been solved. Wherein, the annular top wall 30 has a concave 311 with a high outer part and a low inner part and inclined inwards, the concave 311 comprises an upper part 3111 arranged along the outer ring of the annular top wall 30, the upper part 3111 is a circular arc curved surface, the second fire outlet 92 is arranged at the upper part 3111, the concave 311 is an inclined inwards curved surface, when liquid overflows in the pan, the liquid can flow into the liquid containing tray through the inclined curved surface under the action of gravity, the problem that the first fire outlet 91 is blocked by the overflowing liquid in the pan is solved, and the second fire outlet 92 is arranged at the upper part 3111 of the concave 311 to avoid being blocked by the overflowing liquid in the pan. In order to guide the secondary air in the gas supplementing cavity 4 to the concave portion 311 more quickly, the concave portion 311 further includes a lower portion 3112 disposed along the inner ring of the annular top wall 30, and the highest point of the lower portion 3112 is lower than the highest point of the convex rib 81, so as to guide the secondary air in the gas supplementing cavity 4 to the concave portion 311 more quickly. Finally, in order to realize the self-stabilized flame of the inner flame hole 231 and the secondary air supplement channel 100 of the inner flame hole 231, the inner ring flame cover 2 comprises an inner peripheral wall 20, an outer peripheral wall 22 and a top 23 connected with the inner peripheral wall 20 and the outer peripheral wall 22, the inner peripheral wall 20, the outer peripheral wall 22 and the top 23 are enclosed into a central air mixing chamber 21, the top 23 is provided with the inner flame hole 231, and in order to realize the self-stabilized flame of the inner flame hole 231, the axis of the inner flame hole 231 and the axis of the inner ring flame cover 2 form an included angle of 45-60 degrees. In order to supplement the independent secondary air to the inner fire hole 231, an air outlet 230 is formed on the top 23 of the inner fire cover 2, a central cavity 201 is defined by the inner peripheral wall 20, and the center of the base 1 and the central cavity 201 jointly form an air supplement channel 100 which is communicated with the air outlet 230 and penetrates up and down.
The specific process is as follows, when the burner works, two ways of injection pipes are respectively an outer injection pipe 200 and an inner injection pipe 300, and inject gas into the base 1, wherein one way of gas enters into the first fire outlet 91 and the second fire outlet 92 of the outer ring fire cover 3 from the outer ring gas channel 11 after air flow distribution, the other way of gas enters into the inner fire outlet 231 of the inner ring fire cover 2 from the central gas channel and flows out, and the first side wall 55 of the base 1 is provided with an air inlet 52 for a blower to blow into the air cavity 5, so that the external air can be effectively preheated when entering the air supplement cavity 4, the preheated secondary air can be divided out by the air outlet 51 to provide preheated secondary air for the inner ring fire cover 2 and the outer ring fire cover 3, so as to effectively improve the utilization rate of the gas, wherein the outer peripheral wall 22 of the inner ring fire cover 2 is provided with the flow guide member 8, the flow guide member 8 can guide the secondary air in the air supplement cavity 4 to the fire outlet area of the outer ring gas mixing chamber 31, the secondary air is divided by the flow guide piece 8, so that the inner ring and the outer ring can be fully combusted, the flow guide piece 8 can avoid the phenomenon of unreasonable distribution of the secondary air in the air supply cavity 4, the secondary air is divided by the flow guide piece 8, so that the inner ring and the outer ring can be fully combusted, and meanwhile, the air supply channel 100 can independently supply the secondary air to the inner fire hole 231.

Claims (18)

1. A burner for a gas range, comprising:
a base (1);
the inner ring fire cover (2) is arranged on the base (1), and a central air mixing chamber (21) is formed between the inner ring fire cover and the base (1);
the outer ring fire cover (3) is also arranged on the base (1), is positioned at the periphery of the inner ring fire cover (2), and forms an outer ring gas mixing chamber (31) with the base (1); an air supplement cavity (4) is formed between the central air mixing chamber (21) and the outer ring air mixing chamber (31);
the method is characterized in that: the air cavity (5) is arranged in the base (1) and is positioned below the outer ring air mixing chamber (31), and the air cavity (5) is isolated from the outer ring air mixing chamber (31); at least two air outlets (51) communicated with the air supplementing cavity (4) and the air cavity (5) are formed in the inner side wall of the base (1) at intervals along the circumferential direction, and air inlets (52) for allowing outside air to flow into the air cavity (5) are formed in the outer side wall of the base (1).
2. Burner for gas cooktops according to claim 1, characterized in that: the air inlet hole (52) is connected with an external air supply part (50).
3. Burner for gas cooktops according to claim 2, characterized in that: the air cavity (5) is C-shaped, the air cavity (5) comprises a C-shaped first outer side wall (53) and a C-shaped first inner side wall (54), the corresponding end parts of the C-shaped first outer side wall (53) and the C-shaped first inner side wall (54) are respectively connected through a first side wall (55) and a second side wall (56), the air inlet hole (52) is formed in the first outer side wall (53), and the air outlet hole (51) is formed in the first inner side wall (54).
4. Burner for gas cooktops according to claim 3, characterized in that: the air cavity (5) is directly formed in the base (1), the first outer side wall (53) and the first inner side wall (54) form part of the base (1), the outer side wall of the base (1) except the second outer side wall (57) of the first outer side wall (53) and the inner side wall of the base (1) except the second inner side wall (58) of the first inner side wall (54) enclose an outer ring gas channel (11) communicated with the outer ring gas mixing chamber (31) together with the first side wall (55) and the second side wall (56).
5. Burner for gas cooktops according to claim 4, characterized in that: be equipped with in air cavity (5) and be C shape baffle (6), baffle (6) will air cavity (5) are separated into and are located inboard air outlet chamber (501) and be located the preheating chamber (502) in the outside, the preheating chamber (502) are held preheating spare (7) of preheating secondary air, the income gas port of preheating chamber (502) directly with inlet port (52) are linked together, and the gas outlet of preheating chamber (502) with air outlet chamber (501) looks fluid communication, and venthole (51) with air outlet chamber (501) are linked together.
6. Burner for gas cooktops according to claim 5, characterized in that: the preheating part (7) is a first fin (71) arranged on the inner surface of the first outer side wall (53) and a second fin (72) arranged on the outer surface of the partition board (6), and the second fin (72) and the first fin (71) are arranged in a staggered mode.
7. Burner for gas cooktops according to claim 6, characterized in that: the outer edges of the first fin (71) and the second fin (72) are arc-shaped.
8. The burner for a gas range according to any one of claims 5 to 7, wherein: the outer ring air mixing chamber (31) is provided with fire outlets at intervals along the circumferential direction on the wall surface adjacent to the air replenishing chamber (4), the outer circumferential wall (22) of the inner ring fire cover (2) is provided with a flow guide element (8), and the flow guide element (8) can guide secondary air in the air replenishing chamber (4) to the fire outlet area of the outer ring air mixing chamber (31).
9. Burner for gas cooktops according to claim 8, characterized in that: the water conservancy diversion spare (8) is including following periphery wall (22) interval of inner ring fire lid (2) is equipped with bead (81) that a plurality of epirelief are in periphery wall (22) surface.
10. Burner for gas cooktops according to claim 9, characterized in that: and an included angle or parallelism is formed between the single convex rib (81) and the central axis of the inner ring fire cover (2).
11. Burner for gas cooktops according to claim 10, characterized in that: singly bead (81) with the axis of inner ring fire lid (2) has the contained angle to the outside edge of single bead (81) is the pitch arc, and whole water conservancy diversion spare (8) constitute rotatory form.
12. Burner for gas cooktops according to claim 11, characterized in that: the air outlet (51) and the central axis of the outer ring fire cover (3) form an included angle, and the included angle is the same as the rotating direction of the single rib (81).
13. The burner for a gas range according to any one of claims 9 to 12, wherein: the outer ring fire cover (3) comprises an annular top wall (30), an inner ring wall (32) and an outer ring wall (33), wherein the inner ring wall (32) and the outer ring wall are vertical or inclined downwards from the inner side edge and the outer side edge of the annular top wall (30), and the fire outlet holes comprise first fire outlet holes (91) arranged on the inner ring wall (32) and second fire outlet holes (92) which are formed along the circumferential direction of the annular top wall (30) and connected with the first fire outlet holes (91) to form a concave-convex structure.
14. Burner for gas cooktops according to claim 13, characterized in that: the annular top wall (30) is provided with a concave table (311) which is high in outside and low in inside and inclines inwards, the concave table (311) comprises an upper part (3111) arranged along the outer ring of the annular top wall (30), the upper part (3111) is an arc-shaped curved surface, and the second fire outlet holes (92) are arranged on the upper part (3111).
15. Burner for gas cooktops according to claim 14, characterized in that: the concave platform (311) comprises a lower part (3112) arranged along the inner ring of the annular top wall (30), and the highest point of the lower part (3112) is lower than that of the convex rib (81).
16. The burner for a gas range according to any one of claims 9 to 12, wherein: the inner ring fire cover (2) comprises an inner peripheral wall (20) arranged at an inner interval and an outer peripheral wall (22) and a top (23) connected with the inner peripheral wall (20) and the outer peripheral wall (22), the inner peripheral wall (20), the outer peripheral wall (22) and the top (23) are jointly surrounded to form a central air mixing chamber (21), and an inner fire hole (231) is formed in the top (23).
17. Burner for gas cooktops according to claim 16, characterized in that: the axis of the inner fire hole (231) and the axis of the inner ring fire cover (2) form an included angle of 45-60 degrees.
18. Burner for gas cooktops according to claim 17, characterized in that: an air outlet (230) is formed in the top (23) of the inner ring fire cover (2), a central cavity (201) enclosed by the inner peripheral wall (20) is formed, and the center of the base (1) and the central cavity (201) jointly form an air supplement channel (100) which is communicated with the air outlet (230) and is communicated up and down.
CN201811456710.XA 2018-11-30 2018-11-30 Burner for gas stove Active CN111256120B (en)

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Publication number Priority date Publication date Assignee Title
CN112856409B (en) * 2021-01-07 2022-03-18 宁波方太厨具有限公司 Burner for gas stove

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CN2199455Y (en) * 1994-08-26 1995-05-31 胡俊达 Secondary air-preheating combustion accelerating device for gas range
JP2003336813A (en) * 2002-05-23 2003-11-28 Paloma Ind Ltd Burner for cookstove
CN201539893U (en) * 2008-11-05 2010-08-04 卫桥生 Energy-saving emission reducing combustor
JP2013040728A (en) * 2011-08-18 2013-02-28 Nippon Thermoener Co Ltd Gas burner
CN103900085A (en) * 2014-03-04 2014-07-02 宁波方太厨具有限公司 Burner of gas cooker
CN104791787A (en) * 2015-02-12 2015-07-22 杭州老板电器股份有限公司 Upper air inlet, inner flame gathering and semi-closed efficient burner
CN204922975U (en) * 2015-07-24 2015-12-30 高学廷 Secondary co -combustion ware
CN205026662U (en) * 2015-09-25 2016-02-10 浙江苏泊尔家电制造有限公司 Combustor
CN108105768A (en) * 2018-01-11 2018-06-01 曾祥林 A kind of concealed cooker burner of ejector pipe
CN207865471U (en) * 2017-12-04 2018-09-14 宁波方太厨具有限公司 A kind of stove heat shield and application have the kitchen range of the stove heat shield
CN208804718U (en) * 2018-07-28 2019-04-30 宁波方太厨具有限公司 A kind of high-efficiency gas stove

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2199455Y (en) * 1994-08-26 1995-05-31 胡俊达 Secondary air-preheating combustion accelerating device for gas range
JP2003336813A (en) * 2002-05-23 2003-11-28 Paloma Ind Ltd Burner for cookstove
CN201539893U (en) * 2008-11-05 2010-08-04 卫桥生 Energy-saving emission reducing combustor
JP2013040728A (en) * 2011-08-18 2013-02-28 Nippon Thermoener Co Ltd Gas burner
CN103900085A (en) * 2014-03-04 2014-07-02 宁波方太厨具有限公司 Burner of gas cooker
CN104791787A (en) * 2015-02-12 2015-07-22 杭州老板电器股份有限公司 Upper air inlet, inner flame gathering and semi-closed efficient burner
CN204922975U (en) * 2015-07-24 2015-12-30 高学廷 Secondary co -combustion ware
CN205026662U (en) * 2015-09-25 2016-02-10 浙江苏泊尔家电制造有限公司 Combustor
CN207865471U (en) * 2017-12-04 2018-09-14 宁波方太厨具有限公司 A kind of stove heat shield and application have the kitchen range of the stove heat shield
CN108105768A (en) * 2018-01-11 2018-06-01 曾祥林 A kind of concealed cooker burner of ejector pipe
CN208804718U (en) * 2018-07-28 2019-04-30 宁波方太厨具有限公司 A kind of high-efficiency gas stove

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