CN213577483U - Burner fire cover - Google Patents

Abstract

The utility model discloses a burner fire cover, which comprises a fire cover body and a gas carding device, wherein the fire cover body is provided with a gas cavity with a downward opening and a plurality of main fire holes, the main fire holes are communicated with the gas cavity, and the fire cover body is also provided with flame stabilizing holes and a flame stabilizing ring; the carding gas device is arranged in the inside or the opening of the gas cavity and is provided with a plurality of inclined holes which are communicated with the inside and the outside of the gas cavity. The burner fire cover of the utility model has simple and ingenious structure, on one hand, the effects of carding fuel gas and changing the flow direction of the fuel gas are achieved, thereby being beneficial to the full and uniform mixing of the fuel gas and air, leading the combustion to be more sufficient and improving the combustion working condition; on the other hand, the probability of backfire can be reduced, flameout noise is reduced, and the user experience is improved.

Description

Burner fire cover

Technical Field

The utility model relates to a cooking utensils technical field especially relates to a carding gas device for gas-cooker.

Background

The combustion system of the household gas stove mainly comprises a burner and a fire cover, and premixed gas reaches the fire cover through a gas channel of the burner and is combusted through a combustion hole. The gas speed that current combustor reaches each position of fire lid through the gas way of furnace end on the market is different, can lead to the combustion flame state inconsistent like this, influences the outward appearance, can influence combustion performance even. In addition, the existing burner is not provided with a structural design for reducing backfire and noise, so that the backfire and flameout noise are easy to occur, and the use experience of a user is influenced.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that exist among the prior correlation technique at least to a certain extent, for this reason, the utility model provides a burner fire lid not only can comb the gas, can also reduce tempering and noise reduction, promotes the user and uses experience.

According to the burner fire cover provided by the above, the burner fire cover is realized by the following technical scheme:

a burner fire cover comprising: the gas burner comprises a burner cap body, wherein the burner cap body is provided with a gas cavity with a downward opening and a plurality of main flame holes, the main flame holes are communicated with the gas cavity, and the burner cap body is also provided with flame stabilizing holes and a flame stabilizing ring; the carding gas device is used for reducing backfire and noise, is arranged in the inner part or at the opening of the gas cavity and is provided with a plurality of inclined holes, and the holes are communicated with the inner part and the outer part of the gas cavity.

In some embodiments, the fire cover body and the gas chamber are in an annular configuration; the carding gas device comprises a connecting part and a carding part, the connecting part is an inner ring and an outer ring which are respectively abutted with the inner ring wall and the outer ring wall of the gas cavity, and the carding part is positioned between the inner ring and the outer ring; the aperture is provided in the comb portion.

In a first embodiment, the carding part is provided with a plurality of guide vanes distributed along the circumferential direction of the carding part, the guide vanes are arranged in a tilted manner on a horizontal plane, and the pore is formed between every two adjacent guide vanes.

In a second embodiment, the guide vanes are formed by partially punching and cutting the comb portion and then turning the comb portion upward or downward, and the aperture is formed between each guide vane and the comb portion.

In some embodiments, the number of the guide vanes is 60-80, and all the guide vanes are uniformly distributed along the circumferential direction of the carding part.

In some embodiments, the angle β between the guide vane and the horizontal plane is 15 ° to 60 °.

In some embodiments, the connecting portion is provided with a positioning structure, the inner annular wall and/or the inner annular wall of the gas chamber is provided with a limiting structure corresponding to the positioning structure, and the limiting structure is in fit clamping connection with the positioning structure.

In a third embodiment, the comb portion is provided with a plurality of hollowed-out projections having openings, distributed along the circumference thereof, the openings forming the apertures.

In some embodiments, the hollowed-out protrusion is formed by integrally and outwardly punching a part of the carding part, and the edge of the hollowed-out protrusion is cut and separated from the carding part to form the opening.

In some embodiments, the convex portion of the hollow-out projection is an arc surface or a spherical surface protruding upwards or downwards.

In some embodiments, the number of the hollowed-out protrusions is 60-80, and all the hollowed-out protrusions are uniformly distributed along the circumferential direction of the carding part.

Compared with the prior art, the utility model discloses an at least including following beneficial effect: the utility model discloses a carding gas device, its simple structure, ingenious reaches the effect of carding gas and change the gas flow direction on the one hand, has changed the gas and has reached the air current route of combustor fire lid by the combustor furnace end, does benefit to gas and air intensive mixing, makes the burning more abundant, improves the burning operating mode; on the other hand, the probability of backfire can be reduced, flameout noise is reduced, and the user experience is improved.

Drawings

FIG. 1 is a schematic structural view of a first gas carding device installed in a fire cover in embodiment 1 of the invention;

FIG. 2 is an exploded view of a first gas carding unit and a fire cover in embodiment 1 of the present invention;

FIG. 3 is a top view of a first gas comber according to embodiment 1 of the present invention;

FIG. 4 is a sectional view of a first carding gas device of embodiment 1 of the invention;

FIG. 5 is a schematic structural view of a second carding part of the carding gas device in embodiment 2 of the present invention;

fig. 6 is a schematic structural view of a third carding part of a carding gas device in embodiment 3 of the invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. To the embodiment of the present invention, modify or replace some technical features, without departing from the spirit of the present invention, it should be covered in the technical solution scope of the present invention.

Embodiment 1 as shown in fig. 1-4, the present embodiment provides a burner fire cover comprising: the gas burner cap comprises a burner cap body 1, wherein the burner cap body 1 is provided with a gas cavity 101 with a downward opening and a plurality of main flame holes 102, the main flame holes 102 are communicated with the gas cavity 101, and the burner cap body 1 is also provided with flame stabilizing holes 104 and a flame stabilizing ring 105; a comb gas device 2 for reducing tempering and noise reduction, comb gas device 2 sets up in the inside or the opening part in gas chamber 101, and comb gas device 2 and be equipped with a plurality of slopes and supply the hole 201 that the gas passes through, the one end and the inside intercommunication in gas chamber 101 of hole 201, the other end intercommunication gas chamber 101 is outside, thereby make gas chamber 101 can communicate with the combustor furnace end through hole 101, through the hole 201 that sets up the slope, prevented to a certain extent that the gas of 1 outside of fire lid body is from gas chamber 101 perpendicular downwardly conveying to the combustor furnace end inside, reach the effect that reduces tempering and flame-out noise. In addition, from the perpendicular upwards transmission of combustor furnace end by redistributing to carding gas device 2 time, reach the effect of carding gas to its flow direction can take place to bend when the gas flows through hole 201, makes the flow path of gas change, then inside the gas chamber 101 of flow direction fire lid body 1, flow out and the burning from main fire hole 102 at last.

Therefore, the burner cap of the burner of the embodiment has a simple and ingenious structure of the gas carding device 2, so that the effects of carding gas and changing the flow direction of the gas are achieved, the airflow path of the gas transmitted from the burner of the burner to the cap body 1 is changed, the gas and air are favorably and uniformly mixed, the combustion is more sufficient, and the combustion working condition is improved; on the other hand, when taking place to flame out, carding gas device 2 can effectively prevent that the gas of 1 outside of fire lid body from entering into inside the combustor furnace end to reach the purpose that reduces the probability of tempering and reduce flame out noise, promote the user and use experience.

Preferably, a plurality of holes 201 are uniformly arranged on the gas carding device 2 at intervals along the circumferential direction, so that the gas carding device 2 can uniformly distribute gas, and meanwhile, the flow rate of the carding gas reaching the main fire holes 102 ensures that the flow rate of each main fire hole 102 is consistent, thereby improving the combustion condition and the flame stabilizing effect.

As shown in fig. 2-4, specifically, the fire cover body 1 and the gas chamber 101 are of an annular structure, the carding gas device 2 includes a connecting portion 21 and a carding portion 22, the connecting portion 21 is disposed in the gas chamber 101 and is an inner ring 211 and an outer ring 212, the inner ring 211 and the outer ring 212 are respectively abutted against an inner annular wall and an outer annular wall of the gas chamber 101, so as to prevent the gas from passing through a gap between the connecting portion 21 and the annular wall of the gas chamber 101, and improve the airtightness between the connecting portion 21 and the annular wall of the gas chamber 101. Carding portion 22 sets up between inner ring 211 and outer loop 212, and inner ring 211 and outer loop 212 are connected respectively to carding portion 22's inside and outside both sides, be equipped with the hole 201 of intercommunication gas chamber 101 and combustor furnace end on carding portion 22, so through connecting portion 21, realized linking together carding portion 22, make carding gas device 2's assembly and dismantlement simpler, convenient, when the gas enters into the gas chamber 101 of fire lid body 1 through carding portion 22 from the combustor furnace end inside, under carding portion 22's injecture, the flow path of gas has been changed, and the flow path of gas has been prolonged, and simultaneously, make the outside gas of fire lid body 1 more be difficult to enter into inside the combustor furnace end, thereby reach the effect that reduces tempering and flame-out noise.

In other embodiments, the carding gas device 2 may be disposed at the opening of the gas chamber 101, that is, at the bottom of the fire cover body 1, when installed, the upper end surfaces of the inner ring 211 and the outer ring 212 respectively abut against the lower end surface of the inner ring wall and the lower end surface of the outer ring wall of the gas chamber 101, the carding portion 22 is disposed between the inner ring 211 and the outer ring 212, and the carding portion 22 is provided with a hole 201 communicating the gas chamber 101 and the burner head of the burner.

Preferably, the carding part 22 is provided with a plurality of guide vanes 23 distributed along the circumferential direction thereof, the guide vanes 23 are arranged in a tilted manner on a horizontal plane, and a gap 201 is formed between two adjacent guide vanes 23. In the present embodiment, all the guide vanes 23 and the apertures 201 between two adjacent guide vanes 23 together constitute the comb portion 22. Therefore, the guide vanes 23 are designed to be inclined on the horizontal plane, so that the guide vanes 23 not only can guide the gas flow, but also can effectively prevent the gas outside the fire cover body 1 from entering the burner of the burner, thereby achieving the effects of reducing the backfire and the flameout noise; on the other hand, any two adjacent guide vanes 23 form two opposite side walls of the same hole 201, so that the hole 201 does not need to be additionally formed, the manufacturing process is saved, the manufacturing cost is reduced, and the competitiveness of company products is favorably improved.

Preferably, the quantity of water conservancy diversion piece 23 is 60 ~ 80, and whole water conservancy diversion pieces 23 along the circumference evenly distributed of combing portion 22, so, guarantee that combing portion 22 has higher porosity, promote unit rate of admitting air and gas and comb the effect to guarantee the equidistance between two adjacent holes 201, make the gas velocity of flow that reaches outer fire lid body 1 unanimous, reach even gas distribution effect, improve combustion condition and flame stability. In this embodiment, the inclination directions of all the baffles 23 are the same, so that the inclination directions of each of the apertures 201 are the same, thereby avoiding interference of the air flows discharged from two adjacent apertures 201 and achieving a silencing effect.

Preferably, the inner part and the outer part of the deflector 23 are fixedly connected with the inner ring 211 and the outer ring 212 respectively, and an included angle β between the deflector 23 and the horizontal plane is 15-60 °, so that the included angle β between the central axis of each pore 201 and the horizontal plane is 15-60 °, which can effectively ensure the blocking effect of the deflector 23 and each pore 201, even if the gas outside the fire cover body 1 is more difficult to enter the burner head of the burner through the carding part 22, thereby avoiding backfire and flameout noise; in addition, when the gas is vertically transmitted upward from the burner head and flows through the comb portion 22, the flow direction of the gas is bent under the limitation of the deflector 23 and the aperture 201, so that the gas flows into the gas chamber 101 in a direction not perpendicular to the horizontal plane. More preferably, the angle β between the guide vane 23 and the horizontal plane is 30 ° to 50 °.

In other embodiments, the number, inclination angle and shape of the baffles 23 can be adjusted according to the actual size of the fire lid body 11. The guide vanes 23 can be designed to be rotatably connected with the connecting portion 21, each guide vane 23 can rotate around the radial direction of the connecting portion 21, the inclination angle of each guide vane 23 can be adjusted according to actual conditions, meanwhile, the assembly precision requirement of the guide vanes 23 can be reduced, the assembly difficulty and cost are reduced, and the production efficiency and the product competitiveness are improved.

As shown in fig. 3-4, specifically, the height of the inner ring 211 is greater than that of the outer ring 212, the height of the outer ring 212 is less than that of the carding portion 22 or the baffles 23 in the vertical direction, and the inner side wall of the outer ring 212 is fixedly connected with the lower end of each baffle 23, so that when gas flows through the aperture 201, the gas can flow out from the radial gap between two adjacent baffles 23, which is not only beneficial to increasing the contact area between the aperture 201 and the gas chamber 101, but also can save the manufacturing material of the outer ring 212, and reduce the manufacturing cost of the carding gas device 2.

As shown in fig. 2-4, further, the connecting portion 21 is provided with a positioning structure 202, the inner annular wall and/or the inner annular wall of the gas chamber 101 is provided with a limiting structure 103 corresponding to the positioning structure 202, and the limiting structure 103 is engaged with the positioning structure 202. Specifically, the lateral wall that deviates from inner ring 211 at outer ring 212 is equipped with location structure 202, and the inside wall that deviates from outer ring 212 at inner ring 211 is equipped with location structure 202, and is corresponding, all is equipped with limit structure 103 at the inner ring wall and the inner ring wall in gas chamber 101, so cooperate the joint through limit structure 103 and location structure 202 for comb gas device 2 is installed inside gas chamber 101 more firmly reliably.

In this embodiment, the positioning structure 202 is a positioning protrusion, four positioning protrusions are circumferentially arranged on the outer side wall of the outer ring 212 away from the inner ring 211 at intervals, four positioning protrusions are circumferentially arranged on the inner side wall of the inner ring 211 away from the outer ring 212 at intervals, and in the same radial direction, the positioning protrusion on the inner ring 211 and the positioning protrusion on the outer ring 212 form a pair. The limiting structure 103 is a limiting groove, correspondingly, four limiting grooves are respectively arranged on the inner annular wall and the inner annular wall of the gas cavity 101, and two limiting grooves in the same radial direction form a pair. From this, through four to the protruding and four to the spacing groove cooperation of location for carding gas device 2 is more firm reliable with being connected in gas chamber 101.

In other embodiments, the setting position of the positioning protrusion can be exchanged with the setting position of the limiting groove, and the number of the positioning protrusion and the limiting groove can be adjusted according to the implementation situation.

Example 2

As shown in fig. 5, the present embodiment is different from embodiment 1 in that the structure of the comb portion 22 of the gas comber is different. Specifically, the carding part 22 is an annular carding plate, a plurality of flow deflectors 23 are arranged on the carding plate along the circumferential direction of the carding plate, the flow deflectors 23 are arranged on the horizontal plane in an inclined manner, and a gap 201 is formed between two adjacent flow deflectors 23. When the gas from the perpendicular upwards transmission of combustor furnace end to combing portion 22, its flow direction takes place to bend and flows out from hole 201 under the injecing of water conservancy diversion piece 23, reaches the effect of combing the gas and changing the gas flow direction, has prolonged the gas and has reached the air current route of fire lid body by the combustor furnace end, does benefit to gas and air intensive mixing even, makes the burning more abundant, improves the burning operating mode. In addition, when taking place flame out, comb gas board and water conservancy diversion piece 23 can effectively prevent the outside gas of fire lid body to enter into inside the furnace end to reach the purpose that reduces the probability of tempering and reduce flame out noise, promote the user and use experience.

Preferably, the baffles 23 are formed by partially punching and cutting the card edge and then folding the baffle upwards or downwards, and a hole 201 is formed between each baffle 23 and the card edge. Therefore, the carding part 22 has a simple structure, the guide vanes 23 can be machined and formed quickly, the connecting procedure of each guide vane 23 with the inner ring and the outer ring in embodiment 1 can be omitted, the production efficiency is improved, and the manufacturing cost is reduced.

In this embodiment, the quantity of water conservancy diversion piece 23 is 60 ~ 80, and the even interval arrangement of the circumferential direction of gas combing plate is followed to whole water conservancy diversion piece 23, and all water conservancy diversion pieces 23 are arranged towards clockwise or anticlockwise slope, take place mutual interference with the gas that prevents to flow from two adjacent holes 201, can also reach evenly branch gas simultaneously, guarantee that the gas velocity of flow that reaches the fire lid body is unanimous, promote combustion stability, reach the effect of stable flame and reduction combustion noise. Preferably, the included angle between the baffle 23 and the baffle plate is 15-60 degrees, so that the gas outside the fire cover is more difficult to enter the interior of the burner through the carding part 22 under the limiting action of the baffle plate and the baffle 23, thereby avoiding backfire and reducing flameout noise; gaps between the three edges of the flow deflector 23 and the gas combing plate form a hole 201, so that the gas outlet area of unit gas is increased, the gas distribution is more uniform, and the combustion sufficiency and the flame stability are improved.

It can be seen that the carding gas device of this embodiment, compare with embodiment 1, its structure is simpler, does benefit to carding portion 22 of carding gas device fast machine-shaping more to carding portion 22's assembly requirement is lower, reduces and makes the degree of difficulty and cost, further promotes the competitiveness of product.

In other embodiments, the carding gas device may also omit the connecting portion (i.e., the inner ring and the outer ring) as described in embodiment 1, when the carding portion 22 is installed inside the gas chamber of the fire cover body, the inner and outer sides of the carding portion 22 respectively abut against the inner and outer annular walls of the gas chamber as described in embodiment 1, and meanwhile, the inner and outer sides of the carding portion 22 are provided with the positioning structures, and the inner and outer annular walls of the gas chamber are correspondingly provided with the limiting structures which are engaged with the positioning structures. When combing portion 22 is installed in the gas chamber bottom of fire lid body, the inside and outside both sides of combing portion 22 top surface respectively with the interior rampart lower extreme face in gas chamber and interior rampart lower extreme face looks butt to combing portion 22 centre gripping is between fire lid body and combustor furnace end.

Example 3

As shown in fig. 6, the present embodiment is different from embodiment 2 in that the structure of the comb portion 22 of the gas comber is different. Specifically, the carding part 22 is an annular-structured carding plate, a plurality of hollowed-out protrusions 203 with openings 204 are arranged on the carding plate along the circumferential direction of the carding plate, the openings 204 form pores 201, and thus, when gas is transmitted vertically upwards from the burner and flows through the hollowed-out protrusions 203 by arranging the hollowed-out protrusions 203 with the openings 204 on the carding plate, the flow path of the gas is changed under the limitation of the hollowed-out protrusions 203, and the gas flows into the gas cavity of the fire cover body in the gas outlet direction which is not perpendicular to the horizontal plane; when simultaneously the outside gas of fire lid enters into the gas chamber of fire lid body, because the effect of blockking of comb gas board and fretwork arch 203 makes it more difficult to enter into inside the furnace end to reach the effect that reduces tempering and flame-out noise.

Preferably, the hollowed-out protrusions 203 are integrally formed by punching and pressing a part of the card gas board outwards, and the edges of the hollowed-out protrusions 203 are cut and separated from the card gas board to form openings 204, so that the hollowed-out protrusions 203 and the holes 201 are formed quickly. More preferably, the convex portion of the hollow-out projection 203 is an arc-shaped surface or a spherical surface protruding upward or downward. In this embodiment, the convex part of fretwork arch 203 is the spherical surface of outstanding upwards to the angle that makes the gas flow direction take place to bend is bigger, makes the outside gas of fire lid more difficult to enter into the furnace end inside simultaneously, promotes and blocks the effect. The number of the hollow-out protrusions 203 is 60-80, and all the hollow-out protrusions 203 are uniformly distributed along the circumferential direction of the air combing plate.

Therefore, the convex part of the hollowed-out protrusion 203 is designed into an arc surface or a spherical surface, so that the blocking effect of the hollowed-out protrusion 203 is better, and the further reduction of the tempering and flameout noises is facilitated; simultaneously, the arrangement of the hollow-out protrusions 203 enables the gas flow direction to be changed from vertical upward to the circumferential direction towards the gas combing plate, and flows out from the holes 201 tangentially, so that the bending degree of the gas outlet direction is larger, and the gas outlet direction of the gas can be stabilized.

In other embodiments, the carding gas device can also omit a connecting portion (i.e., an inner ring and an outer ring), when the carding portion 22 is installed inside the gas cavity of the fire cover body, the inner and outer sides of the carding portion 22 respectively abut against the inner and outer walls of the gas cavity as described in embodiment 1, and at the same time, the inner and outer sides of the carding portion 22 are provided with positioning structures, and the inner and outer walls of the gas cavity are correspondingly provided with limiting structures which are engaged with the positioning structures. When combing portion 22 is installed in the gas chamber bottom of fire lid body, the inside and outside both sides of combing portion 22 top surface respectively with the interior rampart lower extreme face in gas chamber and interior rampart lower extreme face looks butt to combing portion 22 centre gripping is between fire lid body and combustor furnace end.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (11)

1. A burner fire cover, comprising:

the gas burner cap comprises a burner cap body (1), wherein the burner cap body (1) is provided with a gas cavity (101) with a downward opening and a plurality of main flame holes (102), the main flame holes (102) are communicated with the gas cavity (101), and the burner cap body (1) is also provided with flame stabilizing holes (104) and flame stabilizing rings (105);

the carding gas device (2) is used for reducing backfire and noise, the carding gas device (2) is arranged inside or at an opening of the gas cavity (101), a plurality of inclined pores (201) are formed in the carding gas device (2), and the pores (201) are communicated with the inside and the outside of the gas cavity (101).

2. Burner fire cover according to claim 1, characterized in that the fire cover body (1) and the gas chamber (101) are of annular configuration; the carding gas device (2) comprises a connecting part (21) and a carding part (22), wherein the connecting part (21) is an inner ring (211) and an outer ring (212) which are respectively abutted with the inner ring wall and the outer ring wall of the gas cavity (101), and the carding part (22) is positioned between the inner ring (211) and the outer ring (212); the aperture (201) is provided to the comb portion (22).

3. Burner fire cover according to claim 2, characterised in that the comb (22) is provided with several baffles (23) distributed along its circumference, the baffles (23) being arranged inclined in the horizontal plane, the apertures (201) being formed between two adjacent baffles (23).

4. Burner fire cover according to claim 3, characterised in that the baffles (23) are formed by partially die cutting the comb (22) and folding the comb up or down, the apertures (201) being formed between each baffle (23) and the comb (22).

5. Burner fire cover according to claim 3 or 4, characterised in that the number of guide vanes (23) is 60-80 and that all guide vanes (23) are evenly distributed in the circumferential direction of the comb section (22).

6. Burner fire cover according to claim 3 or 4, characterised in that the angle β between the flow deflector (23) and the horizontal plane is 15 ° to 60 °.

7. Burner fire cover according to claim 2, characterized in that the connecting part (21) is provided with a positioning structure (202), the inner annular wall and/or the inner annular wall of the gas chamber (101) is provided with a limiting structure (103) corresponding to the positioning structure (202), and the limiting structure (103) is in fit and snap fit with the positioning structure (202).

8. Burner fire cover according to claim 2, characterised in that the comb (22) is provided with several hollowed-out projections (203) with openings (204) distributed along its circumference, the openings (204) forming the apertures (201).

9. Burner fire cover according to claim 8, characterized in that the hollowed-out protrusions (203) are integrally punched and formed outwards from part of the comb portion (22), and the edges of the hollowed-out protrusions (203) are cut and separated from the comb portion (22) to form the openings (204).

10. The burner fire cover according to claim 8, characterized in that the raised part of the hollowed-out protrusion (203) is an arc surface or a spherical surface which protrudes upwards or downwards.

11. The burner fire cover according to claim 8, characterized in that the number of the hollowed-out protrusions (203) is 60-80, and all the hollowed-out protrusions (203) are uniformly distributed along the circumferential direction of the carding part (22).

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