CN111256119B

CN111256119B - Burner for gas stove

Info

Publication number: CN111256119B
Application number: CN201811456693.XA
Authority: CN
Inventors: 史丽莎; 朱志新
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2021-11-02
Anticipated expiration: 2038-11-30
Also published as: CN111256119A

Abstract

The invention relates to a burner for a gas stove, which comprises a base, an inner ring fire cover, an outer ring fire cover, a gas supplementing cavity and a gas mixing cavity, wherein the inner ring fire cover is arranged on the base, forms a central gas mixing chamber with the base; still be equipped with a plurality of radial secondary tonifying qi passageways that are used for intercommunication tonifying qi chamber and external world, its characterized in that along circumference interval on the base: the outer ring gas mixing chamber is provided with first fire outlet holes at intervals along the circumferential direction on the wall surface adjacent to the gas supplementing cavity, and the outer circumferential wall of the inner ring fire cover is provided with the flow guide piece.

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

The first technical problem to be solved by the present invention is to provide a burner for a gas stove with reasonable secondary air distribution 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 has a good secondary air supplement effect for the side inlet air of the outer ring fire cover to improve the thermal efficiency, 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 can uniformly heat a pot bottom, 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 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; a plurality of radial secondary air supply channels for communicating the air supply cavity with the outside are arranged on the base at intervals along the circumferential direction;

the method is characterized in that: the outer ring gas mixing chamber is provided with fire outlets at intervals along the circumferential direction on the wall surface adjacent to the gas supplementing cavity, and the outer circumferential wall of the inner ring fire cover is provided with a flow guide piece for guiding secondary air in the gas supplementing cavity to the fire outlet area of the outer ring gas mixing chamber.

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.

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, the convex edge and the central axis of the inner ring fire cover form an included angle, the outer side edge of the convex edge is an arc line, and the whole flow guide part forms a rotating shape.

In order to realize that the outside air enters the air supply cavity through the rotation of the secondary air supply channel, an included angle is formed between the single secondary air supply channel and the central axis of the outer ring fire cover, and the included angle is the same as the rotation 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.

Preferably, the outer peripheral wall of the inner ring fire cover is gradually inclined outwards from bottom to top. The setting of periphery wall makes the secondary air in the tonifying qi intracavity lead first fire hole and second to go out the fire hole more and supply.

Compared with the prior art, the secondary air distribution device has the advantages that in order to avoid the phenomenon of unreasonable distribution of the secondary air in the air supply cavity, the secondary air is distributed through the flow guide piece, so that the inner ring and the outer ring can be fully combusted, the secondary air distribution device is particularly suitable for the outer ring fire cover with two rings of fire, the flow guide piece can avoid the mutual influence of the secondary air between the inner ring and the outer ring on one hand, and can effectively supplement the secondary air to one ring of fire outlet holes of the two rings of fire of the outer ring fire cover, which is close to the inner ring, on the other hand, the secondary air can be effectively supplemented, the positioning is accurate, the gas combustion efficiency is improved, meanwhile, the flow guide piece can recycle the heat of the inner ring fire cover, the secondary air can be preheated, and the heat efficiency of a combustor is improved.

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 an angled cross-sectional view of the burner 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, as a best embodiment of the present invention, the burner for a gas stove in this embodiment includes a base 1, an inner ring fire cover 2 disposed on the base 1 and forming a central air mixing chamber 21 with the base 1, an outer ring air mixing chamber 31 disposed on the base 1 and located at the periphery of the inner ring fire cover 2 and forming an outer ring air mixing chamber 31 with the base 1, an air supply chamber 4 formed between the central air mixing chamber 21 and the outer ring air mixing chamber 31, a plurality of radial secondary air supply channels 40 disposed on the base 1 at intervals along the circumferential direction and used for communicating the air supply chamber 4 with the outside, fire outlets circumferentially disposed on the wall surface of the outer ring air mixing chamber 31 adjacent to the air supply chamber 4, a flow guide member 8 disposed on the outer circumferential wall 22 of the inner ring fire cover 2, the flow guide member 8 capable of guiding the secondary air in the air supply chamber 4 to the fire outlet region of the outer ring air mixing chamber 31 and shunting the secondary air by the flow guide member 8, make the interior outer ring homoenergetic fully burn, and the unreasonable distribution phenomenon of secondary air in the benefit air cavity 4 can be avoided in setting up of water conservancy diversion spare 8, shunt secondary air through water conservancy diversion spare 8, make the interior outer ring homoenergetic fully burn, especially be fit for having the outer ring fire lid 3 of two rings of fires, this setting up of water conservancy diversion spare 8 on the one hand can also carry out the benefit of secondary air effectively to being close to an inner ring of outer ring fire lid 3 two rings of fires hole effectively, it is accurate to have the location, improve gas combustion efficiency, water conservancy diversion spare 8 can recycle the heat of inner ring fire lid 2 simultaneously, secondary air can be preheated, help improving the combustor thermal efficiency. 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 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 guide member 8 forms a rotating shape, so that the convex edge 81 of the guide member 8 guides the secondary air preheated by the guide member 8 to rotate to the outer fire cover 3 at a certain rotating speed, the single secondary air supply channel 40 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 of the inner fire hole 231, an air outlet 230 is formed in the top 23 of the inner ring fire cover 2, a central cavity 201 is formed by the inner peripheral wall 20, 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 runs through up and down, the outer peripheral wall 22 of the inner ring fire cover 2 gradually inclines outwards from bottom to top, and the outer peripheral wall 22 enables the secondary air in the air supplement cavity 4 to be more guided to the first fire hole 91 and the second fire hole 92 for supplement.

The specific process is as follows, when the burner works, the two paths of injection pipes are respectively an outer injection pipe 200 and an inner injection pipe 300, gas is injected into the base 1, one path of gas enters the first fire outlet hole 91 and the second fire outlet hole 92 of the outer ring fire cover 3 from the outer ring gas channel 11 after being distributed by the gas flow, the other path of gas enters the inner fire hole 231 of the inner ring fire cover 2 from the central gas channel and flows out, wherein, the outer peripheral wall 22 of the inner ring fire cover 2 is provided with a flow guide part 8, the flow guide part 8 can guide the secondary air in the air supply cavity 4 to the fire outlet hole area of the outer ring air mixing chamber 31, the secondary air is divided by the flow guide part 8, so that the inner ring and the outer ring can be fully combusted, and the arrangement of the flow guide piece 8 can avoid the phenomenon of unreasonable distribution of 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, meanwhile, the air supplement channel 100 can independently supplement the secondary air to the inner fire holes 231.

Claims

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); a plurality of radial secondary air supplementing channels (40) for communicating the air supplementing cavity (4) with the outside are arranged on the base (1) at intervals along the circumferential direction;

the method is characterized in that: the outer ring air mixing chamber (31) is provided with fire outlets on the wall surface adjacent to the air replenishing cavity (4) at intervals along the circumferential direction, and the outer circumferential wall (22) of the inner ring fire cover (2) is provided with a flow guide piece (8) used for guiding secondary air in the air replenishing cavity (4) to the fire outlet area of the outer ring air mixing chamber (31).

2. Burner for gas cooktops according to claim 1, 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.

3. Burner for gas cooktops according to claim 2, 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).

4. Burner for gas cooktops according to claim 2, characterized in that: singly bead (81) with the axis of inner ring fire lid (2) has the contained angle, and singly the outside edge of bead (81) be the pitch arc, whole water conservancy diversion spare (8) constitute rotatory form.

5. Burner for gas cooktops according to claim 4, characterized in that: and the secondary air supply channel is in an included angle with the central axis of the outer ring fire cover (3) and is the same as the single rib (81) in the rotating direction.

6. The burner for a gas range according to any one of claims 3 to 5, 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.

7. Burner for gas cooktops according to claim 6, 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).

8. Burner for gas cooktops according to claim 7, 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).

9. The burner for a gas range according to any one of claims 1 to 5, wherein: interior ring fire lid (2) including inside and outside interval set up internal perisporium (20), top (23) of periphery wall (22) and connection internal perisporium (20) and periphery wall (22), internal perisporium (20), periphery wall (22) and top (23) enclose jointly into central authorities gas mixing chamber (21), interior fire hole (231) have been seted up in top (23).

10. Burner for gas cooktops according to claim 9, 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.

11. Burner for gas cooktops according to claim 10, 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.

12. The burner for a gas range according to any one of claims 1 to 5, wherein: the outer peripheral wall (22) of the inner ring fire cover (2) is gradually inclined outwards from bottom to top.