CN117663140A - Burner - Google Patents

Abstract

The invention discloses a burner, which comprises an outer fire cover and a fire cover seat, wherein the outer fire cover is arranged on the fire cover seat to form an outer ring airflow channel; the outer fire cover is internally provided with combustion plates at intervals, the outer wall of the outer fire cover is respectively provided with an upper circle of fire outlet holes and a lower circle of fire outlet holes which are communicated with the outer ring airflow channel at intervals, and each circle of fire outlet holes is arranged at different angles between the axis of the outer wall end of the outer fire cover and the outer wall of the outer fire cover. According to the invention, the fire outlets are arranged on the outer fire cover at intervals, so that the distribution of fuel gas is more uniform when the fuel gas burns on the outer fire cover, the full heating of the pot body is facilitated, the flame length can be shortened, and the phenomenon that the flue gas is higher due to burning of the support claws of the pot is prevented.

Description

Burner

Technical Field

The invention belongs to the technical field of gas cookers, and particularly relates to a combustor.

Background

At present, the gas stove mainly comprises an atmospheric burner, an infrared burner, an atmospheric and infrared combined burner and the like, the related art discloses the atmospheric and infrared combined burner, an inner fire cover of the atmospheric burner is wholly or partially replaced by an infrared combustion plate, compared with the atmospheric burner, the atmospheric and infrared combined burner can improve the temperature of the center of the burner, the outer ring fire cover of the gas stove commonly used at present is complex in manufacturing, gas is unevenly distributed when being burnt on the fire cover, and the carbon monoxide emission amount after gas combustion is large.

The Chinese patent with application number 200920112857.7 discloses a gas kitchen range fire cover, the outer side elevation of the fire cover is a slope surface, the fire cover is also provided with an inner ring fire hole and a flame stabilizing hole, the inner ring fire hole is positioned in the inner ring of the fire cover, the inner ring fire hole is communicated with a fire cover gas channel, the flame stabilizing hole is opened on the outer side elevation of the fire cover, and the flame stabilizing hole is communicated with the fire cover gas channel, the flame stabilizing hole is positioned below the outer ring fire hole, and the flame stabilizing hole and the outer ring fire hole are alternately arranged, but the flame stabilizing hole is obliquely arranged, and the flame emitted from the flame stabilizing hole can burn a bracket and a supporting claw of a burning pot to cause the smoke to be higher.

The present invention has been made in view of this.

Disclosure of Invention

The invention aims to solve the technical problems of overcoming the defects in the prior art and providing the burner which has more uniform distribution of fuel gas when the fuel gas burns on the outer fire cover and can shorten the flame length.

In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:

the burner comprises an outer fire cover and a fire cover seat, wherein the outer fire cover is arranged on the fire cover seat to form an outer ring airflow channel;

the combustion plates are arranged in the outer fire cover at intervals,

the outer wall of the outer fire cover is provided with an upper circle of fire outlet holes and a lower circle of fire outlet holes which are communicated with the outer ring airflow channel at intervals respectively, and the axis line of the outer wall end of the outer fire cover and the outer wall of the outer fire cover are arranged at different angles.

Further, the fire outlet holes comprise a first fire outlet hole and a second fire outlet hole which are distributed on the outer wall of the outer fire cover up and down; the outer wall of the outer fire cover is arranged from top to bottom, the axial lead of the first fire outlet hole and the outer wall of the outer fire cover form an obtuse angle, and the axial lead of the second fire outlet hole and the outer wall of the outer fire cover form an acute angle.

Further, the second fire outlet hole is communicated with the outer ring airflow channel through a second hole, one end of the second hole is communicated with the second fire outlet hole, and the other end of the second hole is opened in the outer ring airflow channel;

preferably, the included angle between the two axes of the second fire outlet hole and the second hole is an obtuse angle, and the radial angles of the second fire outlet hole, the second hole axis, the first fire outlet hole axis and the outer fire cover are different.

Further, the second hole is connected with the side wall of the second fire outlet hole, and the end part of the second fire outlet hole protrudes to form a collecting part with a conical surface.

Further, the outer fire cover upper surface radial outside slope be provided with first rampart and with the radial outside slope second rampart that is connected of first rampart, be formed with a thick wall between second rampart and the outer wall, the thick wall internal surface includes at least one radial slope anchor ring that is less than 90 degrees angles with outer loop air current passageway, set up on the thick wall first fire hole, second fire hole and second hole, the interior export of first fire hole is seted up on the slope anchor ring.

Further, the lower part of the inclined ring surface is connected with the side ring surface through the smooth transition part, the side ring surface is connected with the bending surface of the outer fire cover, the radial angle of the smooth transition part and the outer ring airflow channel is smaller than that of the inclined ring surface, and the second fire outlet or the inner outlet of the second hole is arranged on the smooth transition part.

Further, the outer ring airflow channel formed by inserting the outer fire cover and the fire cover seat is a variable cross-section channel, a side annular wall is arranged in the outer ring airflow channel, a side annular surface on the outer side of the outer ring airflow channel is parallel to the inner annular surface, the distance between the side annular surface and the side annular wall is smaller than that between the inner annular surface and the side annular wall, and the distance between the smooth transition part and the side annular wall is larger than that between the inclined annular surface and the side annular wall.

Further, the upper end of the inclined ring surface is connected with the side ring wall through an inclined surface above the outer ring airflow channel, the radial angle between the inclined surface and the outer ring airflow channel along the anticlockwise direction is smaller than 90 degrees, the aperture of the second fire outlet hole is larger than that of the second hole, the second fire outlet hole is communicated with the outer ring airflow channel through the second hole, and one end of the second hole is communicated with the smooth transition part.

Further, an ignition part is arranged between the combustion plate and the outer fire cover, the ignition part comprises a fire transmission channel, an ignition outlet of the fire transmission channel is communicated with a fire outlet, flames are transmitted to the outer wall of the outer fire cover, a fire stabilizing hole is formed below the ignition outlet, the diameter of the fire stabilizing hole is smaller than that of the ignition outlet, the fire stabilizing hole is communicated with fuel gas, and thermocouples are arranged on the ignition outlet and the fire stabilizing hole relatively;

preferably, two fire stabilizing holes are formed in the lower end of the ignition outlet and are circumferentially arranged along the outer fire cover, and the thermocouple is arranged between the two ignition outlets.

Further, the ignition outlet and the inner wall of the fire stabilizing hole integrally face to the inner wall of the outer fire cover to form a U-shaped groove, and the thermocouple and the U-shaped groove are oppositely arranged.

After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects:

(1) According to the invention, the fire outlet holes are formed in the outer fire cover at intervals, so that the distribution of the fuel gas is more uniform when the fuel gas burns on the outer fire cover, the full heating of the pot body is facilitated, the flame stabilization is facilitated, the combustion is more stable, the fuel gas can be fully combusted, the emission of carbon monoxide is reduced, and the flame separation phenomenon can be effectively prevented.

(2) The fire outlet holes at the positions corresponding to the supporting legs are arranged to be stepped holes, so that the flame length can be shortened, and the phenomenon that smoke is high due to burning of the supporting claws of the pot support is prevented.

(3) The invention has the advantages of simple structure, convenient processing and manufacturing, reduced production cost, high ignition efficiency and good use effect, greatly reduces the emission of carbon monoxide, reduces the pollution to air and reduces the damage to human body.

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, without limitation to the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

In the drawings:

FIG. 1 is a schematic view of a fire hole

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

FIG. 3 is a schematic view of the structure of the first fire outlet;

FIG. 4 is a schematic view of the structure of the fire outlet;

FIG. 5 is a cross-sectional view at B-B in FIG. 1;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C;

FIG. 7 is a schematic view of the structure of the first hole;

FIG. 8 is a schematic view of the structure of a high-permeability plate;

FIG. 9 is a schematic cross-sectional view of FIG. 7;

FIG. 10 is a schematic cross-sectional view of a combustor;

FIG. 11 is a schematic view of an ignition inlet;

fig. 12 is a schematic view of the ignition-outlet.

In the figure: 10. a high-permeability plate; 102. a support plate; 20. a combustion plate; 30. an outer fire cover; 304-1, side annular walls; 305. an ignition section; 3051. an ignition groove; 3051-a, small holes in the trough; 3055. a first cavity; 3057. an ignition hole; 315. a through hole; 308. an ignition outlet; 308-a, ignition inlet; 3081. a U-shaped groove; 3082. a fire transfer groove; 3083. a fire stabilizing hole; 3084. a fire hole; 3084-a, a first fire hole; 3084-b, a second fire hole; 3084-1, a first aperture; 3084-2, a second aperture; 3084-3, a collection portion; 316-c, outer wall; 316-1, inclined torus; 316-2, smooth transitions; 316-3, bending surface; 316-4, lateral annulus; 316-5, inner annular surface; 316-6, inclined plane.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The embodiment provides a burner, which comprises an outer fire cover 30 and a fire cover seat 40, wherein the outer fire cover 30 is arranged on the fire cover seat 40 to form an outer ring airflow channel 702; the outer fire cover 30 is internally provided with the combustion plates 20 at intervals, the outer wall 316-c of the outer fire cover 30 is respectively provided with two upper and lower rings of fire outlet holes 3084 communicated with the outer ring airflow channel 702 at intervals, and each ring of fire outlet holes 3084 is arranged at different angles with the outer wall 316-c of the outer fire cover 30 on the axial lead of the outer wall 316-c of the outer fire cover 30.

According to the invention, the fire outlets 3084 are arranged on the outer fire cover 30 at intervals, so that the distribution of the fuel gas is more uniform when the fuel gas burns on the outer fire cover 30, the full heating of the pot body is facilitated, the flame length can be shortened, and the phenomenon that the flue gas is higher due to burning of the support claws of the pot is prevented.

It should be noted that, the fuel gas is divided into an inner ring air flow and an outer ring air flow, and the inner ring air flow enters the combustion plate 20 through an inner ring air flow channel below the combustion plate 20 (the fuel gas refers to a mixed gas of primary air and fuel gas); the outer fire cover 30 includes a channel for the outer air flow to pass through, and the outer air flow reaches the outer wall 316-c of the outer fire cover 30 from the channel, and it should be noted that the outer wall 316-c of the outer fire cover 30 includes a circle of fire holes 3084 disposed around the outer wall 316-c, and the outer air flow reaches the fire holes 3084 from the cavity.

In this embodiment, the fire outlet holes 3084 include a first fire outlet hole 3084-a and a second fire outlet hole 3084-b which are vertically distributed on the outer wall 316-c of the outer fire cover 30, the first fire outlet hole 3084-a is disposed near the upper edge of the outer fire cover 30, and the first fire outlet hole 3084-a is obliquely disposed toward the fire cover seat 40, so as to communicate with the outer ring airflow channel 702 and the outside.

Specifically, the first flame outlet 3084-a is disposed on the side of the outer wall 316-c close to the outside, an outer ring airflow channel 702 is defined on the lower surface of the outer flame cover 30 and the upper surface of the flame cover seat 40, and the air inlet is disposed on the upper surface of the outer ring airflow channel 702, that is, it is understood that one end of the first flame outlet 3084-a is connected to the outer ring airflow channel 702, and the other end is connected to the outside. And is disposed adjacent to the upper edge of the outer fire cover 30, and the air inlet end of the first flame outlet hole 3084-a is disposed inside the outer fire cover 30.

It is noted that the first flame outlet hole 3084-a is inclined from the air inlet end side to the flame outlet end side, and the fuel gas flows upwards from the air inlet end to the flame outlet end along the first flame outlet hole 3084-a, and is converted into flame to provide heat, a height difference exists between the air inlet end and the flame outlet end, and the height of the air inlet end is smaller than that of the flame outlet end, so that the fuel gas in the outer ring airflow channel 702 is better filled in the first flame outlet hole 3084-a along the air inlet end, the combustion efficiency of the burner is improved, and the user requirements are met.

In this embodiment, the axis of the first flame outlet 3084-a is greater than 90 degrees and less than or equal to 180 degrees from the radial direction of the outer flame cover 30, it is also understood that the first flame outlet 3084-a is inclined toward the flame cover seat 40, the first flame outlet 3084-a is inclined to penetrate through the outer ring airflow channel 702 and the outside, and the burner emits flame from the first flame outlet 3084-a on the outer wall 316-c of the outer flame cover 30, that is, the flame emission angle from the outer wall 316-c is defined by the inclination angle of the first flame outlet 3084-a.

It should be noted that, in the present embodiment, the axis of the first flame outlet 3084-a and the radial direction of the outer flame cover 30 are greater than 90 degrees and less than or equal to 180 degrees, and the first flame outlet 3084-a is within the inclined angle range, that is, the angle of the flame, so that the flame coverage area of the burner can be better enhanced, and the combustion efficiency is further improved.

In this embodiment, the fire outlet hole 3084 further includes a second fire outlet hole 3084-b, the second fire outlet hole 3084-b is disposed below the first fire outlet hole 3084-a, and the second fire outlet hole 3084-b and the first fire outlet hole 3084-a are disposed in a staggered manner, in other words, the outer wall 316-c of the outer fire cover 30 is provided with two upper and lower circles of fire outlet holes 3084, the upper circle of fire outlet holes are the first fire outlet holes 3084-a, and the lower circle of fire outlet holes are the second fire outlet holes 3084-b, and the first fire outlet holes 3084-a and the second fire outlet holes 3084-b are disposed at intervals, so that the distribution of the fuel gas is more uniform when the fuel gas burns on the outer fire cover 30, and the full heating of the pot body is facilitated.

Further, the second flame outlet hole 3084-b is communicated with the outer ring airflow channel 702 through the second hole 3084-2, one end of the second hole 3084-2 is communicated with the second flame outlet hole 3084-b, the other end of the second hole is opened in the outer ring airflow channel 702, flame is emitted from the second hole 3084-2 to the second flame outlet hole 3084-b, the flame length in the second flame outlet hole 3084-b can be shortened, the burning pot bracket is prevented, the included angle between the two is an obtuse angle, so that the flame can easily emerge from the second flame outlet hole 3084-b after the flame is shortened, and the heating effect is ensured.

In this embodiment, the axis of the first fire hole 3084-a forms an obtuse angle a with the outer wall 316-c of the outer fire cover 30, the axis of the second fire hole 3084-b forms an acute angle b with the outer wall 316-c of the outer fire cover 30, the first fire hole 3084-a and the second fire hole 3084-b face different directions respectively, so that the fire flame is more uniform, the pan body is favorably heated, a height difference exists between the connecting end of the second fire hole 3084-b and the outside and the bottom surface of the second fire hole 3084-b, the connecting end of the second fire hole 3084-b and the outside is smaller than the bottom surface of the second fire hole 3084-b, and meanwhile the second fire hole 3084-b is inclined from the end close to the outside toward the bottom surface of the first fire hole 3084-a.

It is worth noting that the second flame outlet hole 3084-b is inclined towards the upper surface of the outer flame cover 30, one end of the second flame outlet hole 3084-b is communicated with the outside, the other end of the second flame outlet hole 3084-b is provided with the collecting part 3084-3, flame emitted by the burner is deflected to the lower side of the outer flame cover 30 to emit through the guiding of the second flame outlet hole 3084-b, so that the distribution of fuel gas is more uniform when the fuel gas burns on the outer flame cover 30, and the phenomenon that the flue gas is higher due to the ignition of the support claws of the pot is prevented.

In this embodiment, the first flame holes 3084-a and the second flame holes 3084-b are not 180 degrees at the same time.

It should be noted that, the first flame outlet hole 3084-a and the second flame outlet hole 3084-b are respectively inclined towards different directions, and by adopting the arrangement mode, each flame outlet hole can generate air flows in different directions, so that more uniform combustion and higher combustion efficiency can be realized, and meanwhile, the flame coverage area of the burner is enhanced, and the combustion efficiency is further improved.

In this embodiment, a collecting portion 3084-3 is formed by recessing the bottom of the first hole 3084-1 toward the upper surface of the outer fire cover 30, and the surface of the collecting portion 3084-3 is a conical surface.

Specifically, a collecting portion 3084-3 is disposed opposite to one end of the second flame outlet hole 3084-b, which is communicated with the outside, and the collecting portion is recessed toward one side far away from the outside along the axis direction of the second flame outlet hole 3084-b, so as to form a recessed space, and the upper surface of the collecting portion 3084-3 is a conical surface, which is more beneficial to collecting flames.

In this embodiment, the upper surface of the outer fire cover 30 is provided with a first annular wall 314 and a second annular wall 309 connected to the first annular wall 314 and inclined radially outward, a thick wall is formed between the second annular wall 309 and the outer wall 316-c, a first fire outlet 3084-a, a second fire outlet 3084-b and a second hole 3084-2 are formed in the thick wall, an inner outlet of the first fire outlet 3084-a is formed in the annular surface 316-1, the annular surface 316-1 is positioned at the top of the outer annular airflow channel 702, and the inclined annular surface 316-1 is an inclined surface, so that the fuel gas in the outer annular airflow channel 702 can reach the first fire outlet 3084-a more conveniently, and the flame emitted from the outer fire cover 30 is more stable.

Further, a first annular wall 314 and a second annular wall 309 are arranged on the upper surface of the outer fire cover 30, the first annular wall 314 is obliquely arranged on the upper surface of the outer fire cover 30 from one side close to the combustion plate 20 to the edge of the outer fire cover 30, the second annular wall 309 is obliquely arranged on the upper surface of the outer fire cover 30 away from the first annular wall 314 to the edge of the outer fire cover 30, and an included angle between the first annular wall 314 and the horizontal plane is smaller than an included angle between the second annular wall 309 and the horizontal plane.

In this embodiment, the lower portion of the inclined annular surface 316-1 is connected to the bending surface 316-3 of the outer flame cover 30 through the smooth transition portion 316-2, the radial angle between the smooth transition portion 316-2 and the outer flame flow channel 702 is smaller than that of the inclined annular surface 316-1, the second flame outlet 3084-b or the inner outlet of the second flame outlet 3084-2 is formed on the smooth transition portion 316-2, a certain included angle is formed between the smooth transition portion 316-2 and the inclined annular surface 316-1, and the inclined annular surface 316-1 is not located on the same inclined surface.

Above the outer ring airflow channel 702, an inclined annular surface 316-1 connected with the first annular wall 314, a smooth transition portion 316-2 connected with the inclined annular surface 316-1, and a bending surface 316-3 connected with the outer wall 316-c are arranged, and one end of the first flame outlet 3084-a is communicated with the outer wall 316-c, and the other end is communicated with the inclined annular surface 316-1.

In this embodiment, the outer ring airflow channel 702 formed by inserting the outer fire cover 30 and the fire cover seat 40 is a variable cross-section channel, the outer ring airflow channel 702 is provided with the side annular wall 304-1, the side annular surface 316-4 at the outer side of the outer ring airflow channel 702 is parallel to the inner annular surface 316-5, the distance between the side annular surface 316-4 and the side annular wall 304-1 is smaller than the distance between the inner annular surface 316-5 and the side annular wall 304-1, the distance between the smooth transition part 316-2 and the side annular wall 304-1 is larger than the distance between the inclined annular surface 316-1 and the side annular wall 304-1, the outer ring airflow channel 702 is subjected to four diameters in the height direction, the distance of the outer ring airflow channel 702 in the height direction is gradually reduced, and the gas is pressurized by the reduction of the space, so that the gas flow speed is increased, and the flow rate of the gas at the inner outlet of the first fire outlet 3084-a is also understood to be increased, the gas is timely supplemented, the stable combustion of the fire is ensured, and the combustion efficiency is ensured.

In this embodiment, the upper end of the inclined annular surface 316-1 is connected with the side annular wall 304-1 of the secondary air channel through the inclined surface 316-6, the radial angle between the inclined surface 316-6 and the outer annular airflow channel 702 along the anticlockwise direction is smaller than 90 degrees, the upper part of the outer annular airflow channel 702 is inclined 3084 towards the flame outlet, the fuel gas is guided through the inclined surface 316-6, the stable combustion of the flame is ensured, so that the combustion efficiency is ensured, the aperture of the second flame outlet 3084-b is larger than that of the second hole 3084-2, the flame outlet area is increased through the second flame outlet 3084-b, the combustion efficiency is ensured, the second flame outlet 3084-b is communicated with the outer annular airflow channel 702 through the second hole 3084-2, and one end of the second hole 3084-2 is communicated with the smooth transition part 316-2.

In this embodiment, the second flame outlet hole 3084-b is communicated with the second hole 3084-2, and the second hole 3084-2 is inclined from the lower surface of the first hole 3084-1 toward the lower bottom surface of the outer flame cover 30, and is communicated with the second flame outlet hole 3084-b and the outer ring airflow channel 702.

Further, the second flame outlet hole 3084-b communicates with the outer ring air flow passage 702 through the second hole 3084-2, and the fuel gas flows through the second hole 3084-2 to the second flame outlet hole 3084-b.

It is noted that the air inlet end of the second hole 3084-2 is disposed on the upper surface of the outer ring airflow channel 702, the air outlet end of the second hole 3084-2 is disposed in the first hole 3084-1, and meanwhile, the height of the air inlet end of the second hole 3084-2 is smaller than that of the air outlet end of the second hole 3084-2, so that the fuel gas can flow upward more conveniently, and further fills the second fire outlet hole 3084-b.

Further, the air outlet end of the second flame outlet hole 3084-b is arranged on the lower bottom surface of the second flame outlet hole 3084-b, and is arranged near one side of the collecting part 3084-3, so that flames are better collected in the second flame outlet hole 3084-b and then emerge from the first hole 3084-1.

In this embodiment, the second flame outlet hole 3084-b has a larger diameter than the second hole 3084-2, and the second hole 3084-2 communicates the first hole 3084-1 with the outer ring airflow channel 702.

Further, the fuel gas passes through the second hole 3084-2 from the outer ring airflow channel 702, enters the first hole 3084-1, and after being ignited, the flame of the second hole 3084-2 is blown into the second flame outlet 3084-b, and then is blocked by the second flame outlet 3084-b, and then is discharged out of the environment.

In this embodiment, the included angle between the two axes of the second flame outlet hole 3084-b and the second flame outlet hole 3084-2 is an obtuse angle.

In this embodiment, the outer ring of the outer fire cover 30 is provided with a vertical ring surface as an outer wall 316-c, the upper surface of the outer fire cover 30 is provided with a first ring wall 314 from the side close to the combustion plate 20 to the edge of the outer fire cover 30, the air outlet 304-a of the secondary air channel is arranged on the first ring wall 314, the ignition part 305 is arranged in any one of the air outlets 304-a, the air outlet 304-a is divided into a first air outlet 405 and a second air outlet 406, and the ignition needle 90 is arranged in the first air outlet 405.

In this embodiment, the first flame outlet holes 3084-a are formed as stepped holes or are formed as stepped holes at intervals, specifically, the aperture of the first flame outlet holes 3084-a towards one end of the outer ring airflow channel 702 is reduced, the aperture of the first flame outlet holes 3084-a towards one end of the outside is increased, the first flame outlet holes 3084-a are communicated with the outer ring airflow channel 702 through the first holes 3084-1, the axis of the first holes 3084-1 is parallel to the axis of the first flame outlet holes 3084-a, and the bottom of the first flame outlet holes 3084-a is a conical surface at the joint of the first holes 3084-1 and the first flame outlet holes 3084-a, so that flames can be conveniently guided, the flames can be more easily emitted, the combustion efficiency is ensured, the first holes 3084-1 are directed to the radial outer ring airflow channel 702, the fuel gas is pressurized to the first holes 3084-1, the flow rate is increased, the combustion efficiency is ensured, the flames are emitted from the first holes 3084-a to the first flame outlet holes 3084-a, and the flame support claws are prevented from being supported by the flame support claws due to the increased aperture.

Preferably, a first fire outlet hole 3084-a and a first hole 3084-1 are respectively formed in the outer wall 316-c of the outer fire cover 30 at the joint of the high-permeability plate 10 and the outer fire cover 30, the position of the first fire outlet hole 3084-a corresponds to the supporting claw of the pot support, the first fire outlet hole 3084-a is set to be a stepped hole, namely, one end connected with the outer ring airflow channel 702 is set to be the first hole 3084-1, the aperture of the first hole 3084-1 is smaller than that of the first fire outlet hole 3084-a, and the supporting claw of the pot support is prevented from being burnt to cause high smoke through the setting of the stepped hole.

For convenience of description, arrows in fig. 6 indicate flow directions of smoke in the smoke exhaust path.

In this embodiment, a smoke exhaust channel is formed between the upper cover (including a high-permeability plate 10 and a circular support plate 102 for fixing the high-permeability plate 10) and the outer fire cover 10, and between the upper cover and the combustion plate 20, and the smoke exhaust channel is communicated with the combustion plate 20 and the outside, so that the generated smoke of the combustion plate 20 can flow to the outside, the resistance of the combustion plate 20 is reduced, the gas supply speed and the gas supply amount of the combustion plate 20 are further facilitated, the thermal efficiency of the combustion plate 20 is improved, and the combustion effect is ensured.

The smoke exhaust channel is a channel between the upper cover and the outer fire cover 30 formed by connecting a plurality of upright posts and a gap between the upper cover and the outer fire cover 30, and the high-temperature smoke flows out from the combustion plate 20 along the smoke exhaust channel.

Thus, the flue gas generated by combustion of the combustion plate 20 can flow out of the burner, the combustion resistance of the combustion plate 20 is reduced, the injection quantity of primary air of the combustion plate 20 is further ensured, the combustion of the combustion plate 20 is ensured to be full, and the combustion plate 20 is further ensured to emit infrared rays.

In this embodiment, the high-permeability plate 10 is disposed above the outer fire cover 30 with a space therebetween, and it is also understood that the high-permeability plate 10 is disposed above the combustion plate 20 with a space therebetween, and the heat of the combustion plate 20 can be transferred to the pan bottom through the high-permeability plate 10, that is, the high-permeability plate 10 does not affect the heating effect of the combustion plate 20, or the heating effect of the combustion plate 20 is less, so that the combustion effect of the burner can be ensured.

Meanwhile, the high-permeability plate 10 can be shielded above the combustion plate 20, and as the combustion plate 20 is made of porous materials, the high-permeability plate 10 can prevent soup, impurities and the like generated by overflow from flowing onto the combustion plate 20, so that the combustion plate 20 is blocked, and stable combustion of the combustion plate 20 can be ensured, and further stable combustion of the whole combustor is ensured.

The diameter of the supporting plate 102 is slightly larger than that of the outer fire cover 30, high-temperature flue gas flows from the smoke discharging channel to the upper side of the outer fire cover 30 and flows out of the outside, the outer edge of the supporting plate 102 is inclined downwards, the high-temperature flue gas can be gathered to the upper side of the outer fire cover 30, and flames emitted by the outer fire cover 30 are combusted again, so that the combustion is more sufficient.

In the embodiment, the high-temperature flue gas exhausted by the smoke exhaust channel can flow upwards to the bottom of the cooker, and heat exchange with the bottom of the cooker is continued, so that the heat efficiency of the burner is improved. In addition, the flue gas generated by the combustion plate 20 can flow out through the flue gas channel, and the secondary air can flow to the combustion plate 20, thereby improving the combustion efficiency of the combustion plate 20.

In this embodiment, the flame outlet 3084 is disposed below the smoke exhaust channel, and when the high-temperature smoke flows out from the smoke exhaust channel and flows out through the gap above the outer flame cover 30, the flame emerging from the flame outlet 3084 burns the high-temperature smoke again.

It is worth noting that the high-temperature flue gas flows from the smoke discharging channel to the upper part of the outer fire cover 30 and flows out of the outside, the high-temperature flue gas is gathered to the upper part of the outer fire cover 30, and the flame emitted by the outer fire cover 30 burns again, so that the combustion is more sufficient; in addition, the high-temperature flue gas exhausted by the smoke exhaust channel can flow upwards to the bottom of the pan, and heat exchange with the bottom of the pan is continued, so that the heat efficiency of the burner is improved; in addition, the flue gas that burning board 20 produced can flow out through the smoke evacuation passageway, and the secondary air can flow to burning board 20 department, and then improves the combustion efficiency of burning board 20, and the secondary air flows in from the smoke evacuation passageway below, for burning board supplementary secondary air, produces heat transfer with high temperature flue gas simultaneously, and high temperature flue gas flows along with the smoke evacuation passageway through the clearance of outer fire lid 30 top, and the flame that the play fire hole 3084 that is set up on the outer fire lid 30 again is burnt for the burning is more abundant.

In another embodiment of the present invention, the burner includes an inner fire cover and an outer fire cover 30, the outer fire cover 30 is in a ring shape integrally, the outer fire cover 30 is integrally installed on a fire cover seat and is matched with the fire cover seat to form an inner ring airflow channel, the inner fire cover is coaxially and alternately arranged on an inner ring of the outer fire cover 30 (the inner fire cover in the present application includes a combustion plate and is not described in detail later), the fuel gas is divided into an inner ring airflow and an outer ring airflow, the inner ring airflow enters the combustion plate through the inner ring airflow channel below the combustion plate (in the present application, the fuel gas refers to a mixed gas of primary air and fuel gas or the fuel gas, and the fuel gas is in a flame form in the combustion plate 20, the outer wall 306 of the outer fire cover 30 and the fire transmission channel after being ignited by an ignition device, and is not described in detail later); the outer ring airflow reaches the outer wall 316-c of the outer fire cover 30 from the outer fire cover 30 and the outer ring airflow channel 702 formed by the fire cover seat 40, and it should be noted that the outer fire cover wall 316-c includes the fire outlet 3084 disposed around the outer wall 316-c, and the outer ring airflow reaches the fire outlet 3084 from the cavity.

Further, the high transparent plate 10 is arranged above the combustion plate 20, when a user uses the burner, heat generated by the combustion plate 20 passes through the high transparent plate 10 to reach the pan body, the pan bottom is heated, and as the combustion plate 20 is made of a porous structure, soup, residues and the like generated by overflow of the pan can be prevented from flowing onto the combustion plate 20 due to the high transparent plate 10, so that the combustion plate 20 is blocked, stable combustion of the combustion plate 20 can be ensured, and cleaning of the user is facilitated.

Regarding the relationship between the ignition portion 305 and the outer fire cover 30, the ignition portion 305 may be provided integrally with the outer fire cover 30 as a part of the outer fire cover 30; or may be mounted on the outer fire cover 30, with the ignition portion 305 being disposed at one end of the outer wall 316-c of the outer fire cover 30 as a portion of the outer wall 316-c of the outer fire cover 30 when the ignition portion 305 and the outer fire cover 30 are in place.

As shown in fig. 9, the present embodiment provides an ignition device of a burner, the burner includes a combustion plate 20 spaced from an inner wall of an outer fire cover 30, an ignition portion 305 is disposed between the combustion plate 20 and the outer fire cover 30, the ignition portion 305 includes a fire transfer channel through which fuel gas is transferred to the combustion plate 20 and an outer wall 316-c of the outer fire cover 30, respectively; the flame transfer channel comprises a flame outlet 308 of the outer wall 316-c of the outer flame cover 30 and a flame inlet 308-a arranged close to the combustion plate 20, the fuel gas is fused with the fuel gas of the flame outlet 3084 after reaching the flame outlet 308 through the flame transfer channel, when the ignition device ignites, the flame is transferred to the combustion plate 20 through the flame inlet 308-a of the flame transfer channel, and the flame outlet 3084 arranged around the outer wall 316-c is ignited through the flame outlet 308 of the flame transfer channel; the ignition portion 305 further includes a first cavity 3055, the first cavity 3055 is located below the fire transmission channel, a gas transmission structure is disposed between the first cavity 3055 and the fire transmission channel, the first cavity 3055 is communicated with an inner cavity of the fire transmission channel through the gas transmission structure, and fuel gas enters the first cavity 3055 through an inner ring airflow channel or an inner ring airflow channel and an outer ring airflow channel and then is transmitted to the combustion plate 20 and the fire outlet 308 of the outer wall 316-c of the outer fire cover 30 through the fire transmission channel.

Specifically, in the ignition device of the burner in this embodiment, the fuel gas reaches the combustion plate 20 through the inner ring air flow passage, and reaches the outer wall 316-c of the outer fire cover 30 through the outer ring air flow passage; before reaching the outer wall 316-c of the outer fire cover 30 or the combustion plate 20, the fuel gas is split to enter the first cavity 3055, and the fuel gas in the first cavity 3055 is split to the outer wall 316-c of the outer fire cover 30 and the combustion plate 20 through the fire transmission channel, and is mixed with the fuel gas reaching the combustion plate 20 and the outer wall 316-c of the outer fire cover 30 through the inner ring airflow channel and the outer ring airflow channel, so as to improve the ignition efficiency when the ignition device ignites.

Further, in the process that the fuel gas flows from the inner ring air flow channel to the combustion plate 20 and the outer wall 316-c of the outer fire cover 30 through the ignition part, the flow rate is adjusted through the first cavity 3055, the fire transfer channel and the gas transfer structure between the first cavity 3055 and the fire transfer channel of the ignition part 305, so that the ignition stability of the ignition device is further improved, and when the ignition device of the burner ignites, the flame is transferred to the combustion plate 20 and the outer wall 316-c of the outer fire cover 30 after the fuel gas with the flow rate adjusted is ignited.

Further, the fire transfer channel comprises an ignition inlet 308-a and an ignition outlet 308, the ignition inlet 308-a is at least partially opposite to the side wall of the combustion plate 20, the ignition inlet 308-a is at least partially higher than the top end of the combustion plate 20, and the fuel gas flowing to the combustion plate 200 through the ignition inlet 308-a can be fully fused with the fuel gas in the combustion plate 20, so that the ignition efficiency of the ignition device for igniting the combustion plate 20 is improved; the ignition outlet 308 is arranged on the outer wall 316-c of the outer fire cover 30, and when the fuel gas flows out through the ignition outlet 308, the fuel gas is fused with the fuel gas in the fire outlet 3084 on the outer fire cover 30, so that the ignition efficiency of the outer fire cover by the ignition device is improved. Generally, the flame ports 308 are larger in diameter than the flame ports 3084, and the flames of the flame ports 308 extend from the flame ports 3084 on either side of the flame ports 308 to the outer wall 316-c of the outer flame cover 30.

As a specific implementation manner of this embodiment, after the outer fire cover 30 and the fire cover seat are installed in place, the fire cover seat is used as the bottom wall of the first cavity 3055 so that the first cavity 3055 forms a closed cavity, and the fuel gas enters the first cavity 3055 through the through holes 315 or through channels provided on the peripheral wall of the first cavity 3055. Further, the first cavity 3055 is formed by recessing the lower end of the outer fire cover 30 and the fire cover seat 40 along the direction away from the lower end, the whole first cavity 3055 is rectangular and is located below the fire transmission channel, and the top of the first cavity 3055 is communicated with the fire transmission channel through a gas transmission structure; the first cavity 3055 can set up the bottom, also can be when outer fire lid 30 and fire lid seat are installed in place after, and first cavity 3055 and the upper surface cooperation of base realize sealedly, and the fire lid seat prevents to circulate to revealing in the first cavity 3055 as the bottom of first cavity 3055 this moment to and prevent that inner ring air current and outer loop air current from taking place to cross gas, guarantee that the air current that gets into first cavity 3055 all gets into the fire passageway.

Further, the first cavity 3055 communicates with the lower end of the combustion plate 20 and an inner ring gas flow channel for providing gas to the combustion plate 20, and the inner ring gas flow splits a portion of the gas into the first cavity 3055 before reaching the combustion plate 20; after reaching the burner plate 20, a portion of the gas is blocked from entering the first cavity 3055 by the burner plate 20.

Specifically, the first cavity 3055 is near one end of the inner ring airflow channel and is communicated with the peripheral wall of the inner ring airflow channel; the first cavity 3055 extends in a direction away from the outer wall 31 of the outer fire cover 30 at an end of the inner ring airflow passage and at least partially into the inner wall of the outer fire cover 30; when the first cavity 3055 extends to the inner wall of the outer fire cover 30, the inner wall of the outer fire cover 30 serves as a cavity wall of the first cavity 3055 at an end far from the inner ring airflow passage; alternatively, when the first cavity 3055 extends toward the outer wall 31 of the outer fire cover 30 at an end remote from the inner ring airflow passage and into the inner wall of the outer fire cover 30, the cavity wall of the first cavity 3055 at an end remote from the inner ring airflow passage serves as a part of the inner wall of the outer fire cover 30.

As a specific implementation of this embodiment, the first cavity 3055 is adjacent to the inner and outer ring airflow channels 702 at both ends of the outer fire cover 30 in the radial direction, respectively, so that the inner or outer ring airflow splits the fuel gas into the first cavity 2055 before reaching the outer wall 316-c of the combustion plate 20 or the outer fire cover 30; the first cavity 3055 may optionally be in communication with the inner ring airflow channel, or the first cavity 3055 may be in simultaneous communication with the inner ring airflow and the outer ring airflow.

As a specific implementation manner of this embodiment, when the cavity wall of the first cavity 3055 is used as a part of the peripheral wall of the inner ring airflow channel, the first cavity 3055 is communicated with the inner ring airflow channel through the through hole 315, and when the fuel gas passes through the inner ring airflow channel, a part of the fuel gas is split out and enters the first cavity 3055 through the through hole 315, then enters the fire transmission channel through the gas transmission structure, and then is transmitted to the combustion plate 20 and the outer wall 316-c of the outer fire cover 30 through the ignition outlet 308-a and the ignition outlet 308 respectively.

As a specific implementation manner of this embodiment, when the cavity wall of the first cavity 3055 is spaced from the peripheral wall of the inner ring airflow channel, the first cavity 3055 is communicated with the inner ring airflow channel through the through channel, and the connection manner between the first cavity 3055 and the inner ring airflow channel is adjusted according to the actual situation of the burner, so that the applicability of the present invention is improved. Further, the first cavity 3055 is communicated with the inner ring air flow channel through a through hole or a through channel near the cavity wall of the inner ring air flow channel; the first cavity 3055 may be in airflow communication with the inner ring through a through hole or a through channel, or may be provided with a through channel or a through hole simultaneously in airflow communication with the inner ring and the outer ring, so as to ensure that enough fuel gas enters the first cavity 3055, thereby improving ignition stability of the ignition device.

As a specific implementation manner of this embodiment, the inner wall of the outer fire cover 30 forms an inner ring airflow channel below the combustion plate 20, the inner diameter of the inner ring airflow channel gradually increases in the direction that the outer fire cover 30 approaches the combustion plate 20, the inner ring airflow channel is overall horn-shaped, and when the fuel gas reaches the combustion plate 20 through the horn-shaped inner ring airflow channel, the flow velocity gradually decreases, so that the fuel gas is favorable for combustion.

Further, the combustion plate 20 is installed at the horn opening with the largest inner diameter of the inner ring airflow inlet channel, and the inner ring airflow gradually reduces the flow velocity before reaching the combustion plate 20, so as to improve the combustion efficiency of the combustion plate 20.

As an implementation manner of this embodiment, when the first cavity 3055 and the inner ring airflow channel have a space therebetween, the first cavity 3055 is communicated with the side wall of the inner ring airflow channel through the through channel, one end of the through channel, which is communicated with the inner ring airflow channel, is an air inlet end, and one end of the through channel, which is communicated with the first cavity 3055, is an air outlet end.

Further, the air inlet end is disposed below the combustion plate 20 and is located at a position where the inner diameter of the inner ring airflow channel is larger, and during the process of feeding the fuel gas into the combustion plate 20, part of the fuel gas blocked by the combustion plate 20 enters the first cavity 3055 through the air inlet end of the through channel; it should be noted that, after the inner ring air flow is blocked by the combustion plate 20, a blocking force opposite to the air inlet direction of the inner ring air flow is formed, because of the horn-shaped arrangement of the inner ring air flow channel, the combustion plate 20 is arranged at the largest position of the opening, and the air inlet end is arranged at the larger position of the inner diameter of the inner ring air flow channel, at the moment, the air inlet end is opposite to the lower end of the combustion plate 20, and part of air flow blocked by the combustion plate 20 enters the through channel under the action of the blocking force.

Further, the height of the air inlet end on the peripheral wall of the inner ring air flow channel of the through channel is higher than the air outlet end on the cavity wall of the first cavity 3055, that is, the through channel is obliquely arranged between the air inlet end and the air outlet end, and after being blocked by the combustion plate 20, the obliquely arranged through channel is beneficial to reducing the flow velocity of the fuel gas entering the first cavity 3055.

Further, the first cavity 3055 forms a drainage structure on the cavity wall near the air outlet end, and the drainage structure further reduces the flow rate of the fuel gas entering the first cavity 3055 and adjusts the stability of the flow rate of the fuel gas after entering the first cavity.

Further, pass gas structure including the air inlet and the gas outlet of intercommunication first cavity 3055 and passing the fire passageway, the air inlet sets up at the top of first cavity 3055, the gas outlet sets up in passing the fire passageway bottom, can not directly get into the gas passageway after the through-hole that the gas set up through the slope gets into first cavity 3055, wait that the gas is full of first cavity 3055 back and circulate to the gas outlet by the air inlet, at this in-process, the velocity of flow of gas reduces step by step, and then improves ignition efficiency and ignition stability of ignition.

Further, the cross-sectional area of the air inlet is larger than the cross-sectional area of the air outlet; when the gas in the first cavity 3055 passes through the gas transmission structure, the gas transmission structure adjusts the quantity of the gas entering the gas transmission channel, and the flow rate of the gas is adjusted by controlling the rate at which the gas is filled in the gas channel, so that the proper ignition stability or the proper ignition stability of the flow rate of the gas at the ignition outlet 308-a and the ignition outlet 308 of the gas transmission channel is ensured.

Further, the gas transfer structure includes a first gas transfer channel 3054 and a second gas transfer channel 3053, wherein a cross-sectional area of the gas transfer channel is larger than a cross-sectional area of the second gas transfer channel 3054; when the fuel gas enters the second gas transmission channel 3053 through the first gas transmission channel 3054, the flow rate is further adjusted, so that the ignition stability of the ignition device is improved.

As a specific embodiment of the present embodiment, the first air transfer channel 3054 is hollow and cylindrical, the bottom of the first air transfer channel 3054 is opened on the top wall of the cavity, the first air transfer channel 3054 is vertically arranged between the first cavity 3055 and the second air transfer channel 3053, and the air flow entering the first cavity 3055 is filled with the fire transfer channel through the second air transfer channel 3053 after passing through the first air transfer channel 3054; the top end of the first air transmission channel 3054 is provided with a second air transmission channel 3053, the second air transmission channel 3053 is in a hollow cylinder shape as a whole, and the size of the section of the second air transmission channel 3053 is smaller than that of the first air transmission channel 3053; when the fuel gas in the first cavity 3055 enters the fire transmission channel, the flow direction and the flow speed are regulated in the process of passing through the first air transmission channel 3054 and the second air transmission channel 3053, so that the fuel gas is ensured to enter the fire transmission channel and the stable flow speed is still maintained after the fire transmission channel is full.

Further, the first gas transmission channel 3054 at least comprises a second gas transmission channel 3053, the second gas transmission channel 3053 is communicated with the gas transmission channel at multiple positions through the first gas transmission channel 3054 arranged at the lower end of the gas transmission channel, and the efficiency of filling the gas transmission channel is further improved.

Further, the cross-sectional area of the first air transfer channel 3054 near the second air transfer channel 3053 gradually contracts to form an air transfer surface, the second air transfer channel 3053 is arranged on the air transfer surface to be communicated with the fire transfer channel, when air flow in the first air transfer channel 3054 enters the second air transfer channel 3053 through the air transfer surface, the air flow is buffered by the air transfer surface, the stability of the flow speed of the fuel gas after entering the fire transfer channel is further guaranteed, and therefore the ignition stability of the ignition device is improved.

Further, the position of the air outlet of the second air delivery channel 3053 is adjusted according to the position adjustment direction of the first air delivery channel 3054 between the first cavity 3055 and the fire delivery channel, for example, the first air delivery channel 3054 is disposed at a position close to the ignition inlet 308-a, and then at least one second air delivery channel 3054 is disposed obliquely on the first air delivery channel 3053 towards the ignition outlet 308, so as to ensure that the fuel gas is uniformly filled in the fire delivery channel.

Further, the ignition portion 305 is provided with a plurality of gas transfer structures, the gas transfer structures are arranged along the radial direction of the outer fire cover between the gas transfer channels and the cavities, so that the gas is ensured to be uniformly transferred to each section of the gas transfer channels through the gas transfer structures by the first cavities 3055, the rate of filling the gas transfer channels with the gas flow is improved, and the ignition efficiency of the burner is improved.

As an implementation manner of the present embodiment, in the present embodiment, the fire transfer channel is obliquely disposed at the ignition portion 305, and one end near the inner side of the outer fire cover 30 is higher than one end at the outer side of the outer fire cover 30; because the fire transfer channel is obliquely arranged, the distance between the fire transfer channel and the cavity is gradually reduced from the inner side to the outer side of the outer fire cover 30, the heights of the first air transfer channels 3053 between the fire transfer channel and the cavity are gradually reduced, and the fall formed by the heights of the first air transfer channels 3053 is matched with the inclination angle of the fire transfer channel, so that the efficiency of the air flow transfer of the ignition part 305 is further improved.

As a specific implementation of this embodiment, three gas-transferring structures are included between the fire-transferring channel and the first cavity 3055;

the first gas-transmitting structure is arranged near one side of the combustion plate 20, and in the first gas-transmitting structure, the second gas-transmitting channel 3054 is obliquely arranged from the first gas-transmitting channel 3053 to the ignition outlet 308-a;

the third air transfer structure is close to one side of the outer wall 316-c of the outer fire cover 30, and the third air transfer structure comprises two second air transfer channels 3054, one second air transfer channel 3054 is vertically arranged between the air transfer channels and the first air transfer channel 3053, and the other second air transfer channel 3054 is obliquely arranged from the first air transfer channel 3053 to the ignition outlet 308, so that the rate of filling the air transfer channels with fuel gas is further improved.

The second gas transmission structure is located between the first gas transmission structure and the third gas transmission structure, and the second gas transmission channel 3054 is vertically arranged.

A gas transmission method of an ignition device of a combustor comprises the following steps: the outer fire cover 30 and the fire cover seat 40 are matched to form an outer ring air flow channel, the combustion plate 20 is matched with the outer fire cover 30, an inner ring air flow channel is formed below the combustion plate 20, and fuel gas reaches the outer walls 316-c of the combustion plate 20 and the outer fire cover 30 respectively through the inner ring air flow channel and the outer ring air flow channel; before the gas reaches the outer wall 316-c of the combustion plate 20 and the outer fire cover 30 through the inner ring gas flow channel and the outer ring gas flow channel, part of the gas is split into the ignition part 305, and when the gas entering the ignition part 305 passes through the first cavity 3055, the gas transmission structure and the ignition channel, the gas gradually slows down the flow speed of the gas, and is respectively transmitted to the outer wall 316-c of the combustion plate 20 and the outer fire cover 30 through the fire transmission channel, and is mixed with the gas of the inner ring gas flow and the outer ring gas flow reaching the outer wall 316-c of the combustion plate 20 and the outer fire cover 30, and when the ignition device of the burner ignites, the flame ignites the gas of the outer wall 316-c of the combustion plate 20 and the outer fire cover 30 through the fire transmission channel.

As shown in fig. 10, in the ignition device of the burner in the present embodiment, the inner wall of the outer fire cover 30 of the burner is provided with the combustion plates 20 at intervals; an ignition needle 90 is provided between the combustion plate 20 and the outer flame cover 30 in addition to the ignition portion 305; the side wall of the ignition part 305 adjacent to the ignition needle 90 is provided with an ignition hole 3057, and the ignition end of the ignition needle 90 is arranged opposite to the ignition hole 3057; the ignition part 305 transmits the fuel gas to the outer walls of the combustion plate 20 and the outer fire cover 30 through the fire transmission passage, respectively, and transmits the fuel gas to the ignition hole 3057 through the first ignition passage; when the ignition device ignites, the ignition end of the ignition needle 90 ignites the ignition hole 3057, and the flame is transferred to the outer walls 316-c of the combustion plate 20 and the outer flame cover 30, respectively, through the flame transfer passage.

Further, as a specific implementation manner of this embodiment, two ignition holes 3057 are formed on the side wall of the ignition portion 305 adjacent to the ignition needle, the two ignition holes 3057 are sequentially arranged in the axial direction of the outer fire cover 30, and the discharge end of the ignition needle 90 is disposed between the two ignition holes 3057, so that the gas content of the ignition end is improved, and the ignition success rate of the ignition device is ensured.

Further, a gas transmission structure is arranged at the lower end of the fire transmission channel, and the gas transmission structure provides fuel gas for the fire transmission channel and the ignition hole 3057 at least through the gas outlet and the first ignition channel; and the cross section of the gas outlet of the gas transfer structure is different from the cross section of the ignition hole 3057, and the gas outlet is obliquely arranged towards the ignition inlet 308-a so that the fuel gas can reach the combustion plate 20 faster, the ignition hole 3057 is arranged on the side wall of the ignition inlet 308-a of the gas transfer channel, and the height of the ignition hole 3057 is lower than the arrangement height of the ignition inlet 308-a.

Further, the ignition inlet 308-a is communicated with the side wall of the ignition hole 3057 through the fire transfer groove 3082, and the setting position of the fire transfer groove 3082 is higher than the setting position of the ignition hole 3057, when the ignition device ignites, the ignition end of the ignition needle 90 ignites the fuel gas at the ignition hole 3057 to form flame, the flame is transferred to the ignition channel through the fire transfer groove 3082, the fuel gas in the ignition channel is ignited, and then the ignition inlet 308-a and the ignition outlet 308 of the ignition channel ignite the combustion plate 20 and the outer wall 316-c of the outer fire cover 30, so that the ignition of the burner is realized.

Further, the lower wall of the fire transmission groove 3082 is provided with an in-groove small hole 3051-a; the gas transmission structure provides fuel gas for the small hole 3051-a in the tank through the second ignition channel, and the fuel gas fills the fire transmission tank through the small hole 3051-a in the tank, so that when the ignition device ignites, the flame of the ignition hole 3057 is transmitted to the fire transmission through the fire transmission tank more quickly, and the fire transmission efficiency of the combustor is improved.

Further, the gas transmission structure comprises a first gas transmission channel 3054 and a second gas transmission channel 3053 which are sequentially communicated, wherein the second gas transmission channel 3053 is positioned at the upper end of the first gas transmission channel 3054 and is communicated with the fire transmission channel through a gas outlet; the gas passes through the second air transfer channel 3053, the first ignition channel and the second ignition channel from the first air transfer channel 3054 respectively and passes the fire channel, the ignition hole 3057 and the in-groove aperture 3051-a, and after the gas in the first air transfer channel 3054 passes through the second air transfer channel 3053, the first ignition channel and the second ignition channel, the flow speed is reduced, and meanwhile, the gas is dispersed to multiple positions, so that the ignition stability of the ignition device is improved.

As a specific implementation of this embodiment, the fire passing groove 3082 is deeper on the side close to the ignition needle 90 than on the side close to the fire passing channel; after the gas fills the fire transfer groove 3082 through the small hole 3051-a in the groove, the opening on the side close to the ignition needle 90 is larger than the opening on the side of the fire transfer channel, and more gas overflows towards the direction of the ignition needle 90, so that after the ignition needle 90 ignites the ignition hole 3057, flame can be quickly transferred to the fire transfer channel from the fire transfer groove 3082, and the fire transfer efficiency of the burner is improved.

Further, the flame propagation groove 3082 is leveled with the top end of the combustion plate 20 at a height close to the combustion plate 20; because the flame transfer groove 3082 communicates with the ignition inlet 308-a, and the flame transfer channel includes a flame outlet obliquely arranged toward the ignition inlet 308-a, the fuel gas in the flame outlet is mixed with the fuel gas of the flame transfer groove 3082, and when the flame is transferred from the flame transfer groove, the combustion plate 20 can be ignited, so that the ignition efficiency of the combustion plate 20 is improved.

Further, the height of the fire transfer groove 3082 near one end of the combustion plate 20 is higher than the height of the fire transfer groove 3082 far away from the combustion plate 20, and after the gas in the small hole 3051-a in the groove fills the fire transfer groove, the gas can be mixed with the gas overflowed from the combustion plate 20 along with the higher arrangement mode of the fire transfer groove near the combustion plate, so that the efficiency of igniting the combustion plate 20 is further improved.

Further, the gas transmission structure provides gas for the fire transmission channel through the plurality of gas outlets, so that after the gas can fill the fire transmission channel as soon as possible, the gas is respectively transmitted to the combustion plate 20 and the outer wall 316-c of the outer fire cover 30 through the ignition inlet 308-a and the ignition outlet 308; the plurality of air outlets can be realized by arranging a plurality of second air transfer passages 3053 on one first air transfer passage 3054, or can be realized by arranging a plurality of air transfer structures, and the air outlets can be flexibly arranged according to the actual distance between the combustion plate 20 and the outer wall 316-c of the outer fire cover 30.

The first and second ignition channels are both located within the first flame transfer channel near the inside of the outer flame cover 30.

Further, the ignition device of the burner according to the embodiment has the following ignition method:

the ignition end of the ignition needle 90 ignites the gas coming out of the ignition hole 3057 into flame, which ignites the gas overflowed from the flame transfer groove 3082, and then the flame in the flame transfer passage is transferred from the ignition outlet 308 to the outer wall 316-c of the outer flame cover 30 along with the flame transfer groove 3082 igniting the flame transfer passage and the combustion plate 20.

As shown in fig. 11, in the ignition device of the burner in the present embodiment, the inner wall of the outer fire cover 30 of the burner is provided with the combustion plates 20 at intervals; an ignition needle 90 is provided between the combustion plate 20 and the outer flame cover 30 in addition to the ignition portion 305; the side wall of the ignition part 305 adjacent to the ignition needle 90 is provided with an ignition hole 3057, and the ignition end of the ignition needle 90 is arranged opposite to the ignition hole 3057; the ignition part 305 transmits the fuel gas to the outer walls of the combustion plate 20 and the outer fire cover 30 through the ignition inlet 308-a and the ignition outlet 308, respectively, through the ignition passage, and transmits the fuel gas to the ignition hole 3057 through the first ignition passage; when the ignition device ignites, the ignition end of the ignition needle 90 ignites the ignition hole 3057, and flame is respectively transferred to the combustion plate 20 and the outer wall 316-c of the outer fire cover 30 through the flame transfer channel; the outer wall 316-c of the outer fire cover 30 is provided with a fire outlet 3084, the fire outlet 3084 provides fuel gas through the outer ring airflow, the ignition outlet 308 of the fire transfer channel is communicated with the fire outlet 3084, and after the ignition device ignites, flame is transferred to the outer wall 316-c of the outer fire cover 30 through the ignition outlet 308.

Further, a fire stabilizing hole 3083 is formed below the ignition outlet 308, the diameter of the fire stabilizing hole 3083 is smaller than that of the ignition outlet 308, and the fire stabilizing hole 3083 is formed on the ignition portion 305 or the outer wall 316-c of the outer fire cover 30;

the difference is that when the fire stabilizing hole 3083 is opened at the ignition portion 3053, a first fire stabilizing channel is provided in the ignition portion 305 to provide fuel gas for the fire stabilizing hole 3083;

when the flame stabilizing holes 3083 are formed in the outer wall 316-c of the outer flame cover 30, the outer ring air flow provides fuel gas to the flame stabilizing holes 3083.

In addition, the ignition portion 305 may be integrally formed with the outer fire cover 30, and in this case, the ignition portion 305 may be separately mounted to the outer fire cover 30, and after the ignition portion 305 is mounted in place on the outer wall of the outer fire cover, one end of the ignition portion 305, which is provided with the ignition outlet 308, is used as a part of the outer wall 316-c of the outer fire cover 305. (hereinafter, the fire stabilizing holes are formed in the outer wall 316-c of the outer fire cover 30, and will not be described further)

Further, a thermocouple 80 is arranged opposite to the ignition outlet 308 and the flame stabilizing hole 3083 of the outer wall 316-c of the outer fire cover 30, and after the ignition device ignites the burner, the flame of the ignition outlet 308 and the flame stabilizing hole 3083 continuously burns the thermocouple 80.

It should be noted that, after the burner is ignited, the thermocouple 80 is used for judging whether the burner burns stably, the thermocouple 80 is usually installed at the fire outlet position of the burner, when the burner generates overflow, if the overflow is too large, the flame of the thermocouple 80 is burned out, the electromagnetic valve is closed after the thermocouple 80 is not burned, so as to realize the function of preventing the burner from overflowing.

Further, two flame stabilizing holes 3083 are formed at the lower end of the ignition outlet 308 and circumferentially arranged along the outer flame cover 30, the thermocouple 80 is arranged between the two flame stabilizing holes 3083 and is opposite to the ignition outlet 308, and when the burner is ignited by the ignition device, the two flame stabilizing holes 3083 and flames of the ignition outlet 308 burn the thermocouple 80 at the same time.

Further, the outer wall of the outer fire cover 30 is provided with an ignition outlet 308 and a part of the flame stabilizing hole 3083 integrally recessed towards the inner wall of the outer fire cover 30 to form a U-shaped groove 3081, the thermocouple 80 and the U-shaped groove 3081 are oppositely arranged, and when the burner is ignited by the ignition device, the flame of the whole U-shaped groove continuously burns the thermocouple; because the U-shaped groove is integrally recessed toward the inner wall of the outer fire cover 30, the fuel gas overflowed from the ignition outlet 308 and the fire stabilizing hole 3083 is more quickly mixed with the fuel gas overflowed from the fire outlet 3084 close to the U-shaped groove, so that the efficiency of the ignition outlet 308 for transmitting the flame to the fire outlet 3084 is improved.

Further, a fire transfer groove 3082 is arranged on the outer wall of the outer fire cover 30; the flame transfer groove 3082 communicates the ignition outlet 308 with the flame outlet 3084 nearest to the ignition outlet 308, and when the ignition device ignites, the flame transferred to the ignition outlet by the flame transfer groove 3082 is transferred to the flame outlet 3084, so that the flame transfer efficiency of the outer wall 316-c of the outer flame cover 30 is further improved.

Further, the outer wall 316-c of the outer fire cover 30 includes two layers of staggered first fire holes 3084-a and second fire holes 3084-b; the fire transfer slot 3082 communicates the ignition outlet 308 with the second fire outlet 3084-b nearest to the ignition outlet 308, and when the ignition device ignites, the flame is transferred from the fire transfer slot 3082 to the second fire outlet 3084-b, and as the first fire outlet 3084-a and the second fire outlet 3084-b are staggered on the outer fire cover 30, the distance between the fire outlets 3084 is reduced, the combustion intensity of the outer wall 316-c of the outer fire cover 30 is improved, and the flame transfer speed on the outer wall 316-c of the outer fire cover 30 is further improved.

Further, the flame transfer groove 3082 continues to extend to the outer wall 316-c of the outer flame cover 30 between the two second flame outlets 3084-b after being communicated with one side of the second flame outlet 3084-b near the ignition outlet 308, and is close to the first flame outlet 3084-a, and the further the distance between the two second flame outlets 3084-b is, the further the distance between the flame transfer groove 3082 and the second flame outlet 3084-b is, the shallower the depth of the flame transfer groove 3082 is, so that the flame transfer efficiency of the second flame outlet 3084-b to the first flame outlet 3084-a is enhanced.

Further, the ignition device of the burner according to the embodiment has the following ignition method:

The igniting end of the igniting needle 90 ignites the gas from the igniting hole 3057 into flame, the flame ignites the gas overflowed from the flame transfer groove 3082, then the flame in the flame transfer groove is transferred from the igniting outlet 308 to the flame transfer groove 3082 along with the flame transfer groove 3082 igniting the flame transfer channel and the combustion plate 20, after the flame ignites the second flame outlet 3084-b near the igniting outlet 308 through the flame transfer groove 3082, the first flame outlet 3084-a near the second flame outlet 3084-b is continuously ignited along the flame transfer groove 3082, and then the flame is transferred to the whole outer wall 316-c of the outer flame cover 30.

The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present invention can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present invention.

Claims (10)

1. A burner comprising an outer fire cover (30) and a fire cover seat (40), the outer fire cover (30) being arranged on the fire cover seat (40) to form an outer ring airflow channel (702);

the combustion plates (20) are arranged in the outer fire cover (30) at intervals,

it is characterized in that the method comprises the steps of,

the outer wall (316-c) of the outer fire cover (30) is respectively provided with an upper circle of fire outlet holes (3084) and a lower circle of fire outlet holes (3084) which are communicated with the outer ring airflow channel (702), and each circle of fire outlet holes (3084) are arranged at different angles between the axial lead of the end of the outer wall (316-c) of the outer fire cover (30) and the outer wall (316-c) of the outer fire cover (30).

2. The burner according to claim 1, wherein the flame outlets (3084) comprise first flame outlets (3084-a) and second flame outlets (3084-b) which are vertically distributed on the outer wall (316-c) of the outer flame cover (30); the outer wall (316-c) of the outer fire cover (30) is arranged from top to bottom, the axis of the first fire outlet hole (3084-a) and the outer wall (316-c) of the outer fire cover (30) form an obtuse angle (a), and the axis of the second fire outlet hole (3084-b) and the outer wall (316-c) of the outer fire cover (30) form an acute angle (b).

3. A burner according to claim 2, wherein the second flame outlet hole (3084-b) communicates with the outer annular air flow passage (702) through a second hole (3084-2), and one end of the second hole (3084-2) communicates with the second flame outlet hole (3084-b) and the other end opens to the outer annular air flow passage (702); the included angle between the extension line of the axis of the second hole (3084-2) and the outer wall (316-c) of the outer fire cover (30) is larger than the included angle between the axis of the first fire outlet hole (3084-a) and the outer wall (316-c) of the outer fire cover (30);

Preferably, the included angle between the two axes of the second fire outlet hole (3084-b) and the second hole (3084-2) is an obtuse angle, and the radial angles of the axes of the second fire outlet hole (3084-b), the second hole (3084-2) and the first fire outlet hole (3084-a) and the outer fire cover (30) are different.

4. A burner according to claim 3, wherein the second hole (3084-2) is connected to a side wall of the second flame-out hole (3084-b), and an end portion of the second flame-out hole (3084-b) is formed to protrude as a collective portion (3084-3) having a conical surface.

5. A burner according to claim 2, wherein the upper surface of the outer fire cover (30) is provided with a first annular wall (314) and a second annular wall (309) connected with the first annular wall (314) and inclined radially outwards, a thick wall is formed between the second annular wall (309) and the outer wall (316-c), the inner surface of the thick wall at least comprises an inclined annular surface (316-1) forming an angle smaller than 90 degrees with the outer annular airflow channel (702), the thick wall is provided with the first fire hole (3084-a), the second fire hole (3084-b) and the second hole (3084-2), and the inner outlet of the first fire hole (3084-a) is formed on the inclined annular surface (316-1).

6. A burner according to claim 5, wherein the lower part of the inclined annular surface (316-1) is connected to the side annular surface (316-4) through a smooth transition portion (316-2), the side annular surface (316-4) is connected to the bending surface (316-3) of the outer flame cover (30), the angle between the smooth transition portion (316-2) and the radial direction of the outer ring airflow channel (702) is smaller than the angle of the inclined annular surface (316-1), and the second flame outlet hole (3084-b) or the inner outlet of the second hole (3084-2) is opened on the smooth transition portion (316-2).

7. A burner according to claim 6, wherein the outer ring airflow channel (702) formed by plugging the outer fire cover (30) and the fire cover seat (40) is a variable cross-section channel, a side annular wall (304-1) is arranged in the outer ring airflow channel (702), a side annular surface (316-4) on the outer side of the outer ring airflow channel (702) is parallel to the inner annular surface (316-5), the distance between the side annular surface (316-4) and the side annular wall (304-1) is smaller than the distance between the inner annular surface (316-5) and the side annular wall (304-1), and the distance between the smooth transition part (316-2) and the side annular wall (304-1) is larger than the distance between the inclined annular surface (316-1) and the side annular wall (304-1).

8. A burner according to claim 7, wherein the upper end of the inclined annulus (316-1) is connected to the side annulus (304-1) by an inclined surface (316-6) above the outer annulus airflow passage (702), the inclined surface (316-6) being at a radial angle of less than 90 degrees in a counter-clockwise direction to the outer annulus airflow passage (702), the second flame exit aperture (3084-b) having a larger aperture than the second aperture (3084-2), the second flame exit aperture (3084-b) being in communication with the outer annulus airflow passage (702) through the second aperture (3084-2), the second aperture (3084-2) being in communication with the smooth transition (316-2) at one end.

9. The burner according to claim 1, wherein an ignition part (305) is arranged between the combustion plate (20) and the outer fire cover (30), the ignition part (305) comprises a fire transfer channel, an ignition outlet (308) of the fire transfer channel is communicated with a fire outlet (3084), flame is transferred to an outer wall (316-c) of the outer fire cover (30), a fire stabilizing hole (3083) is arranged below the ignition outlet (308), the diameter of the fire stabilizing hole (3083) is smaller than that of the ignition outlet (308), the fire stabilizing hole (3083) is communicated with fuel gas, and thermocouples (80) are oppositely arranged on the ignition outlet (308) and the fire stabilizing hole (3083);

preferably, two fire stabilizing holes (3083) circumferentially arranged along the outer fire cover (30) are formed in the lower end of the ignition outlet (308), and the thermocouple (80) is arranged between the two ignition outlets (308).

10. A burner as claimed in claim 9, wherein the ignition outlet (308) and the fire stabilizing hole (3083) are integrally recessed toward the inner wall of the outer fire cover (30) to form a U-shaped groove (3081) in the inner wall of the outer fire cover (30), and the thermocouple (80) is disposed opposite to the U-shaped groove (3081).