CN111878814A - Gas distribution plate, combustor and gas stove - Google Patents

Abstract

The invention discloses a gas distribution plate, a burner and a gas stove. The gas distribution disc is provided with at least two annular gas channels and secondary air channels which are distributed at intervals from inside to outside along the radial direction, wherein the secondary air channels comprise a central air channel which is positioned on the inner side of the innermost annular gas channel and a hidden air channel which penetrates through at least one annular gas channel and is communicated with the outside air and the central air channel. Therefore, the external air can be supplied to the middle part of the burner through the hidden air channel and the central air channel, so that the annular fire positioned at the inner ring when the burner works is supplemented with air, and the problem that insufficient air supply is easily generated in the middle part when the fire burner and the gas stove are used is solved.

Description

Gas distributors, burners and gas cooktops

technical field

The invention relates to the technical field of gas stoves, in particular to a gas distribution plate, a burner and a gas stove.

Background technique

In the related art, in order to improve the firepower and the uniformity of the gas stove, its burner adopts the form of three-ring fire to supply fire, that is, the burner can form an inner ring fire, a middle ring fire and an outer ring fire in sequence from the inside to the outside when it is working. Ring fire three circles of flames. The specific method is to change the central through hole in the middle of the second-ring fire burner to a new new air supply channel to realize the three-ring fire supply. However, in this way, when the gas stove is in use, the air can only be supplemented from the peripheral side of the gas stove, which is prone to the problem of insufficient air supply. Especially for the inner ring fire, the air around the gas stove needs to pass through the outer ring fire. And the middle ring fire can reach the inner ring fire, but because the outer ring fire and the middle ring fire need to continuously consume the air, it is easy to cause the problem of insufficient air supply for the inner ring fire.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to propose an air distribution plate, which aims to solve the technical problem of insufficient air supply during the use of the gas stove in the related art.

In order to achieve the above-mentioned purpose, the present invention proposes an air distribution plate, the air distribution plate has:

at least two annular gas passages spaced radially from inside to outside; and

A secondary air passage, the secondary air passage includes a central air passage located inside the innermost annular gas passage, and a concealment that passes through at least one of the annular gas passages to communicate the outside air and the central air passage air channel.

Optionally, there are three annular gas passages, which are respectively an outer annular gas passage, a middle annular gas passage and an inner annular gas passage, and the central air passage is provided inside the inner annular gas passage.

Optionally, the inner ring wall of the outer ring gas channel is spaced apart from the outer ring wall of the middle ring gas channel;

The concealed air passage includes a spaced air passage that is located between the inner ring wall of the outer ring gas passage and the outer ring wall of the middle ring gas passage and communicates with the outside air, and passes through the middle ring gas passage in sequence. and the inner ring gas channel, and communicate with the spaced air channel and the inner lateral air channel of the central air channel.

Optionally, the secondary air channel further includes an outer lateral air channel passing through the outer ring gas channel to communicate the spaced air channel and outside air.

Optionally, a plurality of the outer lateral air passages are distributed at intervals in the circumferential direction of the outer ring gas passage.

Optionally, one of the outer lateral air passages is disposed corresponding to the inner lateral air passage.

Optionally, the inner transverse air passages are arranged in a radially outward direction, and/or the outer transverse air passages are arranged in a radially outward direction.

Optionally, the circumferential width of the inner lateral air channel is gradually increased in the radially outward direction, so that the inner lateral air channel is gradually expanded in the radially outward direction; and / or,

The circumferential widths of the outer transverse air passages are arranged to increase in the radially outward direction, so that the outer transverse air passages are arranged to be gradually expanded in the radially outward direction.

Optionally, the inner ring wall of the middle ring gas channel and the outer ring wall of the inner ring gas channel are the same ring wall, and/or the inner ring wall of the inner ring gas channel is used to form the central air sidewall of the channel.

Optionally, the gas distribution plate includes an inner ring wall and an inner ring wall of the outer ring gas channel that is arranged between the inner ring wall of the outer ring gas channel and the outer ring wall of the middle ring gas channel and connects the outer ring gas channel. The annular partition plate of the outer ring wall of the middle-ring gas channel, and the spaced air channel is formed on the upper side of the annular partition plate.

Optionally, the outer peripheral edge of the annular partition plate is connected to the lower channel wall of the outer lateral air channel, and/or the inner peripheral edge of the annular partition plate is connected to the lower channel of the inner lateral air channel wall.

Optionally, the lower end of the outer ring wall of the innermost annular gas channel protrudes downward from the ring walls of the other annular gas channels to form a guide installation structure when assembled with the burner head assembly.

The present invention also provides a burner, comprising the above-mentioned gas distribution plate.

The present invention also provides a gas stove, including the above burner.

By setting the secondary air channel in the air distribution plate of the invention, the outside air can be supplied to the middle part of the burner through the concealed air channel and the central air channel, so that the annular fire located in the inner ring can be supplemented with air when the burner is working. To ensure that the fuel is fully burned, it can solve the problem that the burner and the gas stove are prone to appear in the process of use, and the air supply in the middle is insufficient.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

FIG. 1 is a schematic view of the structure of a burner according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the burner in FIG. 1 from another perspective;

3 is a cross-sectional view of the burner in FIG. 1 through the centerline of the detachable ejector tube;

Fig. 4 is the partial structure schematic diagram of the middle part of the upper end of the burner in Fig. 3;

5 is a cross-sectional view of the burner in FIG. 1 through the centerline of the first ejector joint;

6 is a cross-sectional view of the burner in FIG. 1 through a centerline of a first combustion hole;

Fig. 7 is the structural schematic diagram of the furnace head in Fig. 3 from a viewing angle;

Fig. 8 is the cross-sectional structure schematic diagram of the burner in Fig. 7;

FIG. 9 is a schematic structural diagram of the burner head from another perspective in FIG. 7;

Fig. 10 is the structural representation of the gas distribution plate in Fig. 3;

FIG. 11 is a schematic cross-sectional structure diagram of the gas distribution plate in FIG. 10;

FIG. 12 is a schematic structural diagram of the middle ring fire cover from a viewing angle in FIG. 3;

FIG. 13 is a schematic structural diagram of another viewing angle of the middle ring fire cover in FIG. 12;

Figure 14 is a sectional view of the middle ring fire cover in Figure 12;

Figure 15 is a schematic cross-sectional structural diagram of the middle ring fire cover passing through a first fire hole in Figure 12;

FIG. 16 is a schematic structural view of the outer ring fire cover from a viewing angle in FIG. 3;

FIG. 17 is a schematic structural diagram of the outer ring fire cover from another perspective in FIG. 16;

Figure 18 is a schematic cross-sectional structural diagram of the outer ring fire cover in Figure 16;

FIG. 19 is a schematic structural diagram of the inner ring fire cover from a viewing angle in FIG. 3;

FIG. 20 is a schematic structural diagram of another viewing angle of the inner ring fire cover in FIG. 19;

FIG. 21 is a cross-sectional view of the middle ring fire cover of FIG. 19 .

Description of reference numbers:

100, burner; 10, burner head assembly; 11, burner head; 1a, outer ring inlet passage; 1b, middle ring inlet passage; 1c, central inlet passage; 12, first ejector pipe joint; 13, inner Ring ring part; 131, Inlet air inlet convex part of inner ring half ring; 132, Mounting convex part; 1321, Mounting hole; 133, Extension ring convex; 134, Inlet ring inlet ring groove; 135, Center through hole; 14, Inside and outside Connection part; 15, annular part of outer ring; 151, inlet ring groove of outer ring; 152, inlet convex part of outer ring half ring; 16, second ejector joint; 18, removable ejector; 181, vertical To the installation part; 182, the lateral air intake part; 183, the connecting lug; 1831, the connecting hole; 20, the gas distributor; 21, the outer ring gas channel; 211, the inner ring wall of the outer ring gas channel; 22, the middle ring channel; 221, the outer ring wall of the middle ring gas channel; 222, the inner ring wall of the middle ring gas channel; 23, the inner ring gas channel; 231, the inner ring wall of the inner ring gas channel; 24, the secondary air channel; 241, the interval Air channel; 242, central air channel; 243, inner lateral air channel; 244, outer lateral air channel; 25, annular partition plate; 30, fire cover assembly; 31, outer ring fire cover; 311, outer ring fire chamber ; 312, the outer ring fire hole; 32, the middle ring fire cover; 321, the middle ring fire chamber; 322, the middle ring fire hole; 3221, the first fire hole; 3222, the second fire hole; 3223, the gas connection mouth; 323, middle ring ring hole; 324, middle ring outer ring wall; 3241, ignition hole; 3242, annular flame stabilization groove; 325, middle ring top wall; 326, middle ring inner ring wall; 327, second hook; 3271, first Two supporting protrusions; 3272, the second locking protrusion; 33, the inner ring fire cover; 331, the inner ring fire chamber; 332, the inner ring fire hole; 333, the inner ring ring hole; 334, the annular cover; 3341, annular accommodating groove; 3342, annular connecting part; 3343, annular inclined part; 3344, annular convex part; 3345, annular protrusion; 3346, diversion gap; Hook; 3361, the first supporting protrusion; 3362, the first locking protrusion; 3363, the limiting protrusion; 3364, the locking groove; 40, the flameout protection needle; 50, the first general ejection tube; Two universal ejector tubes.

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for description purposes, and should not be understood as instructions or Implicit their relative importance or implicitly indicate the number of technical features indicated. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature.

In addition, the meaning of "and/or" in the whole text is to include three parallel schemes. Taking "A and/or B" as an example, it includes scheme A, scheme B, or scheme that A and B satisfy at the same time.

The invention provides a gas distribution plate, a burner and a gas stove.

In an embodiment of the present invention, as shown in FIG. 1 , the burner 100 includes a burner head assembly 10, a gas distribution plate 20 and a fire cover assembly 30. The gas distribution plate 20 is arranged above the burner head assembly 10, and the fire cover The assembly 30 is disposed above the air distribution plate 20 . Among them, according to the number of rings of the (annular) flame of the burner, the burner can be divided into a first-ring fire burner, a second-ring fire burner, a three-ring fire burner and more ring-fire burners; the following will mainly focus on three ring fire burners. The structure of the burner of the present invention will be described in detail by taking the ring fire burner as an example.

The structures of the burner head assembly 10 , the gas distribution pan 20 and the fire cover assembly 30 and their matching structures will be described in detail below.

Hereinafter, the present invention will be described focusing on the air distribution plate 20 .

In one embodiment, as shown in FIGS. 3 , 9 and 10 , the gas distribution plate 20 has at least two annular gas passages and secondary air passages spaced from the inside to the outside along the radial direction. The air passage includes a central air passage located inside the innermost annular gas passage, and a concealed air passage passing through at least one of the annular gas passages to communicate the outside air and the central air passage.

In this embodiment, there are three annular gas passages, which are respectively an outer annular gas passage 21 , a middle annular gas passage 22 and an inner annular gas passage 23 , and the central air passage 242 is provided in the inner annular gas passage 23 . inside.

Correspondingly, as shown in FIGS. 2-8 , the burner assembly 10 has at least two air inlet passages spaced from the inside to the outside along the radial direction, so as to correspond to the at least two annular gas passages in a one-to-one manner.

In this embodiment, there are three air intake passages, which are respectively an outer ring air inlet passage 1a, a middle ring air inlet passage 1b and a central air inlet passage 1c, wherein the outer ring air inlet passage 1a, the middle ring air inlet passage 1a The air passages 1b are all annular passages, and the central air intake passage 1c is a through hole.

The gas distribution plate 20 is installed above the burner assembly 10, the outer ring gas channel 21 communicates with the outer ring inlet channel 1a, the middle ring gas channel 22 communicates with the middle ring inlet channel 1b, and the inner ring gas channel 22 communicates with the middle ring inlet channel 1b. The annular gas passage 23 communicates with the central intake passage 1c.

Correspondingly, as shown in FIGS. 2-5 and 11-20 , the fire cover assembly 30 includes at least two fire covers, which are arranged in a one-to-one correspondence with at least two annular gas passages.

In this embodiment, there are three fire covers, which are respectively an outer ring fire cover 31, a middle ring fire cover 32 and an inner ring fire cover 33. The fire cover assembly 30 is installed on the gas distribution plate 20, so The outer ring fire cover 31, the middle ring fire cover 32 and the inner ring fire cover 33 are all annular parts, and they all have a ring hole, wherein the ring hole of the outer ring fire cover 31 is the outer ring ring hole, and the middle ring fire cover 32 The ring hole is the middle ring ring hole 323, and the ring hole of the inner ring fire cover 33 is the inner ring ring hole 333.

Specifically, as shown in Figures 2-5 and 11-20, the outer ring fire cover 31 is installed above the gas distributor 20, and the outer ring fire cover 31 has an outer ring fire chamber 311, and the outer ring fire hole 312 communicated with the outer ring fire chamber 311, the outer ring fire chamber 311 is communicated with the outer ring gas passage 21, and the gas entering the outer ring air inlet passage 1a can pass through the outer ring gas passage in sequence 21 and the outer ring fire chamber 311, and then spray out from the outer ring fire hole 312, and form an outer ring fire after burning.

As shown in Figs. 2-5 and 11-20, the middle ring fire cover 32 is installed above the gas distribution plate 20. The middle ring fire cover 32 has a ring-shaped middle ring fire chamber 321 and a middle ring fire chamber 321. The middle ring fire hole 322 connected with 321, the middle ring fire chamber 321 is communicated with the middle ring gas channel 22, the gas entering the middle ring air inlet channel 1b can pass through the middle ring gas channel 22 and the middle ring fire chamber 321 in turn, and then the middle ring fire. The inside of the fire hole 322 is ejected, and after burning, a middle ring fire is formed.

For the inner ring fire cover 33 , the inner ring fire cover 33 can be installed above the gas distribution plate 20 , and the inner ring fire cover 33 has an annularly arranged inner ring fire chamber 331 and communicates with the inner ring fire chamber 331 The inner ring combustion hole 332, the inner ring combustion chamber 331 is communicated with the inner ring gas passage 23, and the gas entering the central air intake passage 1c can pass through the inner ring gas passage 23 and the inner ring combustion chamber 331 in turn, and then It is sprayed out from the inner ring fire hole 332 and burns to form an inner ring fire. Alternatively, as shown in Figures 2-5 and 11-20, the inner ring fire cover 33 is installed on the middle ring fire cover 32, and the inner ring fire cover 33 and the middle ring fire cover 32 are enclosed to form a ring-shaped arrangement The inner ring combustion chamber 331 and the inner ring combustion hole 332 communicated with the inner ring combustion chamber 331, the inner ring combustion chamber 331 is communicated with the inner ring gas passage 23, and the gas entering the central air intake passage 1c It can pass through the inner ring gas channel 23 and the inner ring combustion chamber 331 in sequence, and then spray out from the inner ring combustion hole 332, and form an inner ring fire after combustion.

The inner ring hole 333 of the inner ring fire cover 33 communicates with the central air passage 242 . The outside air can enter the central air passage 242 through the concealed air passage, and then flow out from the outlet at the upper end of the inner ring aperture 333 through the central air passage 242 and the inner ring hole 333, thereby supplementing the inner ring fire and the middle ring fire air to supplement the combustion of the burner 100, so as to solve the problem of insufficient air supply during the use of the three-ring fire burner 100 and the gas stove, so as to ensure that the inner ring of the inner fire cover burns from the fire hole. The gas flowing out of 332 and the middle ring fire hole 322 of the middle fire cover is fully burned.

By setting the secondary air passage 24 in the air distribution plate 20 of the present invention, the outside air can be supplied to the middle of the burner 100 through the concealed air passage and the central air passage 242, so that the annular flame located in the inner ring of the burner 100 can be affected when the burner 100 is working. Supplementary air is performed to ensure that the fuel is fully burned, which can solve the problem of insufficient air supply in the middle of the burner 100 and the gas stove during use.

Further, as shown in FIGS. 3 , 9 and 10 , the inner ring wall 211 of the outer ring gas channel is spaced apart from the outer ring wall 221 of the middle ring gas channel. In this way, the distance between the outer ring gas channel 21 and the middle ring gas channel 22 can be increased, so as to avoid excessive concentration of the temperature at the bottom of the pot and increase the uniformity of the flame.

As shown in Figs. 3, 9 and 10, the concealed air passage of the air distribution plate includes a spaced air located between the inner ring wall 211 of the outer ring gas passage and the outer ring wall 221 of the middle ring gas passage and communicated with the outside air Passage 241, a central air passage 242 disposed on the inner side of the inner ring gas passage 23, and passing through the middle ring gas passage 22 and the inner ring gas passage 23 in turn, and communicating with the spaced air passages 241 and the inner portion of the central air passage 242. Lateral air passages 243 .

The inner ring hole 333 of the inner ring fire cover 33 communicates with the central air passage 242 . The outside air can pass through the spaced air passage 241, the inner lateral air passage 243, the central air passage 242 and the inner ring hole 333 in sequence, and flow out from the outlet at the upper end of the inner ring hole 333, so that the inner ring fire and the middle ring fire are carried out. The supplementary air is used to supplement the combustion of the burner 100, so as to solve the problem of insufficient air supply during the use of the three-ring fire burner 100 and the gas stove, so as to ensure that the fire can be burned from the inner ring of the inner fire cover. The gas flowing out of the hole 332 and the middle ring fire hole 322 of the middle fire cover is fully burned.

In this way, the secondary air passage 24 is provided according to the original structure of the air distribution plate 20 of the three-ring burner, which is convenient to increase the suction amount of the secondary air on the one hand, and to simplify the structure of the air distribution plate 20 on the other hand.

Further, as shown in FIGS. 3 , 9 and 10 , the concealed air passage further includes an outer lateral air passage 244 which passes through the outer ring gas passage 21 and communicates with the spaced air passage 241 and the outside air.

In this way, the outside air on the peripheral side of the burner 100/gas range can flow from the outer lateral air passage 244 into the spaced air passage 241 and then flow to the middle of the burner 100 , thereby facilitating supplementary air to the burner 100 .

Further, as shown in FIGS. 3 , 9 and 10 , a plurality of the outer lateral air passages 244 are distributed at intervals in the circumferential direction of the outer ring gas passage 21 .

In this way, it is convenient to increase the feed amount of the outside air, so that the air supply of the three-ring fire burner 100 and the gas stove is sufficient during use.

Specifically, the number of the outer lateral air channels 244 is greater than or equal to 2, and less than or equal to 10, such as 3, 4, 5, 6, 7, and 8.

Further, as shown in FIGS. 3 , 9 and 10 , one of the outer lateral air passages 244 is provided corresponding to the inner lateral air passage 243 . In this way, the outside air entering the spaced air passages 241 from the outer lateral air passages 244 can be facilitated to flow into the inner lateral air passages 243, so as to improve the air supply speed and efficiency.

Further, as shown in FIGS. 3 , 9 and 10 , the outer lateral air passages 244 are arranged in a radially outward direction, and/or the inner lateral air passages 243 are radially outward It is set to gradually expand in the outer direction.

In this way, the air inlets of the outer lateral air passages 244 and/or the inner lateral air passages 243 can be made larger, thereby facilitating the inflow of outside air into the outer lateral air passages 244 and/or the inflow of air in the spaced air passages 241 Inside the inner transverse air channel 243 .

In this embodiment, the outer lateral air passages 244 are arranged in a radially outward direction, and the inner lateral air passages 243 are arranged in a radially outward direction.

Further, as shown in FIGS. 3 , 9 and 10 , the circumferential width of the inner lateral air channel 243 is gradually increased in the radially outward direction, so that the inner lateral air channel 243 is radially outward. The setting is tapered in the outward direction.

Of course, the inner lateral air passages 243 can also be arranged in a radially outward direction in other ways, for example, the axial height of the inner lateral air passages 243 can be arranged in a radially outward direction. increasing settings, etc.

Further, as shown in FIGS. 3 , 9 and 10 , the circumferential width of the outer lateral air channel 244 is gradually increased in the radially outward direction, so that the outer lateral air channel 244 is radially outward. The setting is tapered in the outward direction.

Of course, the outer lateral air passages 244 can also be arranged to be gradually expanded in the radially outward direction, for example, the axial height of the outer lateral air passages 244 may be in the radially outward direction. increasing settings, etc.

It should be noted that, the channel walls of the plurality of outer lateral air channels 244 may divide the outer ring gas channel 21 into a plurality of outer ring gas through holes (not shown) distributed at intervals along the circumferential direction.

Further, as shown in FIGS. 3 , 9 and 10 , the inner ring wall 222 of the middle ring gas channel and the outer ring wall of the inner ring gas channel 23 are the same ring wall, and/or, the inner ring wall of the inner ring gas channel is the same. The annular wall 231 is used to form the side wall of the central air channel 242 . In this embodiment, the inner ring wall 222 of the middle ring gas channel and the outer ring wall of the inner ring gas channel 23 are the same ring wall, and the inner ring wall 231 of the inner ring gas channel is used to form the central air channel 242 side wall.

In this way, by making the inner ring wall 222 of the middle ring gas channel and the outer ring wall of the inner ring gas channel 23 the same ring wall, the distance between the middle ring gas channel 22 and the inner ring gas channel 23 can be reduced, which is beneficial to reduce the On the other hand, the radial size of the small gas distribution plate 20 can also be convenient to reduce the distance between the middle ring fire and the inner ring fire, so as to improve the fire power in the middle of the burner 100 .

Moreover, by using the inner ring wall 231 of the inner ring gas channel to form the side wall of the central air channel 242, on the one hand, it is beneficial to reduce the radial size of the gas distribution plate 20, and on the other hand, it is convenient to increase the central through hole 135 Or increase the inner ring gas channel 23 .

Further, as shown in FIGS. 3 , 9 and 10 , the gas distribution plate 20 includes a space between the inner ring wall 211 of the outer ring gas channel and the outer ring wall 221 of the middle ring gas channel, and is connected to the outer ring gas channel The annular partition plate 25 of the inner ring wall 211 and the outer ring wall 221 of the middle ring gas channel, and the spaced air channel 241 is formed on the upper side of the annular partition plate 25 .

In this way, the inner ring wall 211 of the outer ring gas channel and the outer ring wall 221 of the middle ring gas channel can be connected by the annular partition plate 25 .

Further, as shown in FIGS. 3 , 9 and 10 , the outer peripheral edge of the annular partition plate 25 is connected to the lower channel wall of the outer lateral air channel 244 , and/or the inner part of the annular partition plate 25 The peripheral edge is attached to the lower channel wall of the inner transverse air channel 243 . In this way, on the one hand, the structure of the air distribution plate 20 can be simplified, and on the other hand, the concealed air passage can be made smoother, so as to facilitate air circulation and air absorption.

Of course, in other embodiments, air through holes can also be provided on the annular partition plate 25, so that the outside air under the burner 100 and the gas stove can also enter the spaced air channel 241; A plurality of connecting ribs are distributed at intervals to connect the inner ring wall 211 of the outer ring gas channel and the outer ring wall 221 of the middle ring gas channel, and a ventilation interval is formed between the adjacent connecting ribs, so that the burner 100 and the outside under the gas stove Air may also enter spaced air passages 241; and so on.

Further, as shown in FIGS. 3 , 9 and 10 , the lower end of the outer ring wall of the innermost annular gas passage protrudes downward from the ring walls of the other annular gas passages, so as to form the assembly with the burner head assembly 10 . guide installation structure.

In this embodiment, the lower end of the outer ring wall of the inner ring gas channel 23 protrudes downward from the ring walls of other ring gas channels to form a guide installation structure when assembling with the burner head assembly 10 .

In this way, when assembling the gas distribution plate 20 and the burner head assembly 10, the downwardly protruding part of the inner ring wall 231 of the inner ring gas passage can be aligned with the central air inlet passage 1c of the burner head assembly 10, if possible. First, the inner ring wall 231 of the inner ring gas channel is sleeved outside the side wall of the central air intake channel 1c, or, the inner ring wall 231 of the inner ring gas channel can be first sleeved in the center air intake channel 1c, and then guide the The gas distribution plate 20 and the burner head assembly 10 are close to each other, so as to realize the guide installation.

The present invention will be described below mainly on the fire cover assembly 30 in which the inner ring fire cover 33 and the middle ring fire cover 32 are stacked to form an inner ring fire chamber 331 surrounded by the inner ring fire cover 33 and the middle ring fire cover 32 .

In one embodiment, as shown in FIGS. 2-5 , the fire cover assembly 30 includes a middle-ring fire cover 32 and an inner-ring fire cover 33 , and the inner-ring fire cover 33 and the middle-ring fire cover 32 are stacked so that the inner The ring fire cover 33 and the middle ring fire cover 32 are enclosed to form an inner ring fire chamber 331 .

Specifically, as shown in FIGS. 11-14 , the middle ring fire cover 32 has a middle ring ring hole 323 , a middle ring fire chamber 321 with an open lower end, and a middle ring fire hole 322 communicating with the middle ring fire chamber 321 . The middle ring ring hole 323 is a through hole, and the middle ring fire chamber 321 is an annular chamber.

The inner ring fire cover 33 is installed on the middle ring fire cover 32 .

Specifically, the inner ring fire cover 33 is installed in the middle ring ring hole 323 , and the inner ring fire cover 33 and the middle ring fire cover 32 are enclosed to form an inner ring fire chamber 331 . There is an inner ring combustion hole 332 communicating with the inner ring combustion chamber 331 .

In this way, in the fire cover assembly 30 of the present invention, the inner ring fire cover 33 is stacked and installed on the middle ring fire cover 32, so that the inner ring fire cover 33 and the middle ring fire cover 32 are enclosed to form the inner ring fire chamber 331. The use of the middle ring fire cover 32 to form the inner ring fire chamber 331 is beneficial to reduce the radial size of the burner 100 on the one hand, and to enlarge the inner ring fire chamber 331 on the other hand. 100 and the miniaturized design of the gas stove, the inner ring combustion chamber 331 can be enlarged.

Specifically, as shown in FIGS. 11-14 , the inner ring fire cover 33 includes an annular cover body 334 and an inner ring inner ring wall 335. The inner ring inner ring wall 335 is provided on the lower surface of the annular cover body 334, so The peripheral edge of the annular cover body 334 is connected with the peripheral edge of the middle ring ring hole 323 in a sealing fit. An inner ring combustion chamber 331 is formed by enclosing, wherein the annular cover body 334 is or substantially in the shape of an annular plate, and the inner ring combustion chamber 331 is an annular chamber.

In this way, the middle ring fire cover 32 can form the outer ring wall of the inner ring fire chamber 311 . Moreover, the structure of the inner ring fire cover 33 is simple and the manufacture is convenient.

In the fire cover assembly 30 of the present invention, the inner ring fire cover 33 includes an annular cover body 334 and an inner ring inner ring wall 335 disposed below the annular cover body 334, and the inner ring inner ring wall 335 extends into the middle ring fire cover 32. In the middle ring ring hole 323 , the outer ring ring wall of the inner ring fire chamber 331 is formed by the middle ring fire cover 32 .

Moreover, by making the peripheral edge of the annular cover body 334 and the peripheral edge of the middle ring ring hole 323 sealed and connected, not only the gas leakage in the inner ring fire chamber 331 can be prevented, but also the upper end of the inner ring fire cover 33 and the middle ring fire cover 32 can be connected. The upper ends of the burner 100 are disposed adjacent to each other, that is, the upper end of the inner ring fire cover 33 and the upper end of the middle ring fire cover 32 are arranged close to the same plane, so as to prevent the upper surface of the burner 100 from forming a bulge, or forming a particularly bulging bulge.

Specifically, as shown in FIGS. 11-14 , the inner ring fire hole 332 is provided on the annular cover body 334 . In this way, the design of the inner ring combustion hole 32 can be facilitated.

Specifically, as shown in FIGS. 11-14 , the ring hole of the inner ring inner ring wall 335 is disposed corresponding to the ring hole of the ring cover body 334 to form the inner ring ring hole 333 .

Further, as shown in FIGS. 11-14 , the middle ring fire cover 32 includes a middle ring outer ring wall 324 , a middle ring top wall 325 arranged on the inner ring surface of the middle ring outer ring wall 324 , and an inner ring wall 325 arranged on the middle ring top wall 325 . The middle ring inner ring wall 326 at the edge, the middle ring outer ring wall 324 , the middle ring top wall 325 and the middle ring inner ring wall 326 are enclosed to form the middle ring fire chamber 321 . Wherein, the middle ring fire hole 322 is arranged on the outer ring wall 324 of the middle ring.

The peripheral edge of the annular cover 334 is connected with the upper end of the outer ring wall 324 of the middle ring in a sealing fit. It is spaced from the annular cover (334). In this embodiment, the top wall 325 of the middle ring extends downwards in a direction toward the center of the ring.

In this way, by making the top wall 325 of the middle ring at least partially extend downward in a direction toward the center of the ring, the top wall 325 of the middle ring can be spaced from the annular cover 334, so as to enlarge the combustion chamber 331 of the inner ring, so as to enhance the The firepower of the inner ring fire.

Moreover, by making the peripheral edge of the annular cover body 334 and the upper end of the outer ring wall 324 of the middle ring connected in a sealing fit, so that the peripheral edge of the annular cover body 334 is connected with the peripheral edge of the ring hole 323 of the middle ring in a sealing fit connection, it is convenient to simplify the sealing and fitting connection structure, Thereby, the design difficulty can be reduced and the production cost can be reduced.

Further, as shown in FIGS. 11-14 , the upper end of the outer ring wall 324 of the middle ring protrudes upward from the top wall 325 of the middle ring. In this way, the inner ring combustion chamber 331 can be further enlarged.

Specifically, the ring hole corresponding to the part of the middle ring outer ring wall 324 protruding from the middle ring top wall 325, the ring hole of the middle ring top wall 325 and the ring hole of the middle ring inner ring wall 326 are jointly used to form the middle ring ring hole 323, The hole wall surface of the middle ring ring hole 323, the lower surface of the ring cover plate, and the ring wall surface of the inner ring inner ring wall 335 are used to enclose the inner ring combustion chamber 331 together.

Further, as shown in FIGS. 11-14 , an annular accommodating groove 3341 is formed on the lower surface of the peripheral edge of the annular cover 334 , and the upper end of the middle-ring outer annular wall 324 is disposed in the annular accommodating groove 3341 . In this way, not only can the positioning and installation between the annular cover body 334 and the outer ring wall 324 of the middle ring be realized, but also the sealing and fitting connection between the annular cover body 334 and the outer ring wall 324 of the middle ring can be realized and improved.

Further, as shown in FIGS. 11-14 , a portion of the outer ring wall 324 of the middle ring protruding from the top wall 325 of the middle ring is provided with a pilot hole 3241 communicating with the combustion chamber 331 of the inner ring.

Specifically, as shown in FIG. 4 , the burner 100 further includes a flameout protection needle 40 , the sensing end of the flameout protection needle 40 is set corresponding to the ignition hole 3241 , and the flameout protection needle 40 is used to detect whether the inner ring gas chamber is flameout.

Specifically, the ignition holes 3241 are provided with a plurality to improve the detection accuracy.

Further, as shown in FIGS. 11-14 , the annular cover body 334 at least partially extends downward in a direction toward the center of the ring. In this way, overflow debris such as oil droplets and water can be easily guided into the inner ring hole 333 , so that debris such as oil droplets and water can be easily discharged from the secondary air passage 24 .

Optionally, the channel bottom wall of the inner lateral air channel 243 is inclined downward in a radially outward direction, and/or the annular partition plate 25 is inclined in a radially outward direction. and/or the channel bottom wall of the outer lateral air channel 244 is inclined downward in a radially outward direction. In this way, it is convenient to discharge sundries such as oil droplets and water.

Specifically, the annular cover 334 includes an annular connecting portion 3342 and an annular inclined portion 3343 disposed on the inner edge of the annular connecting portion 3342 , and the annular accommodating groove 3341 is disposed under the outer peripheral edge of the annular connecting portion 3342 On the surface, the annular inclined portion 3343 is inclined downward in the direction toward the center of the ring.

Specifically, the edge of the upper surface of the annular connecting portion 3342 is provided with an annular convex portion 3344, and the inner side surface of the annular convex portion 3344 is inclined downward in the direction toward the center of the ring; in this way, it is convenient to prevent oil droplets, Sundries such as water leak from the periphery of the annular cover 334 .

Specifically, the downwardly inclined angle of the annular inclined portion 3343 is smaller than the downwardly inclined angle of the middle ring top wall 325 .

Further, as shown in FIGS. 11-14 , an annular protrusion 3345 is provided on the upper surface of the annular cover body 334 , and the air outlet of the inner ring fire hole 332 is provided on the annular protrusion 3345 . In this way, on the one hand, the air outlet height of the inner ring fire can be increased, and on the other hand, it can prevent the soup and other debris overflowing to the upper surface of the annular cover from clogging the inner ring fire hole 332 .

Specifically, the annular protrusion 3345 is disposed outside the annular hole of the annular cover body 334 .

Specifically, the annular protrusion 3345 is provided on the upper surface of the annular inclined portion 3343 .

Specifically, the gas outlet of the inner ring fire hole 332 is provided on the top surface of the annular protrusion 3345 . In this way, blocking can be further prevented. Of course, the gas outlet of the inner ring fire hole 332 can also be set on the inner ring surface or the outer ring surface of the annular protrusion 3345 .

Specifically, as shown in FIGS. 11-14 , the combustion holes 332 in the inner ring are inclined upward in the direction toward the center of the ring. In this way, the fire in the inner ring can be concentrated toward the center.

Specifically, a plurality of the inner ring fire holes 332 are distributed at intervals in the circumferential direction of the inner ring fire chamber 331 .

Further, as shown in FIGS. 11-14 , the annular protrusion 3345 is arranged close to the inner ring hole 333 , so that the inner ring is arranged in the middle of the burner.

Further, as shown in FIGS. 11-14 , the inner ring surface of the annular protrusion 3345 is inclined downward in the direction toward the center of the ring; and/or, the outer ring surface of the annular protrusion 3345 is farther away from the center of the ring. In the direction of the center of the ring, the setting is tilted downward. In this way, on the one hand, it is convenient to guide the spilled debris to flow down on the annular protrusion 3345, and on the other hand, it is convenient for demolding, so as to reduce the difficulty of production.

Further, as shown in FIGS. 11-14 , the annular protrusion 3345 is provided with a guide notch 3346 . In this way, the sundries such as oil droplets, water, etc. that are guided to the annular protrusion 3345 can flow into the inner ring hole 333 from the guide gap 3346 to prevent them from accumulating on the outside of the annular protrusion 3345 and overflowing the inner ring. Fire hole 332. Moreover, by arranging the air outlet of the inner ring fire hole 332 on the top surface or the inner ring surface of the annular protrusion 3345, overflow debris such as oil droplets and water can be prevented from flowing into or blocking the inner ring fire hole 332.

Further, as shown in FIGS. 11-14 , the middle ring fire hole 322 includes a first fire hole 3221 , and the air outlet of the first fire hole 3221 is arranged on the outer annular surface of the middle ring outer ring wall 324 . Specifically, a plurality of the first combustion holes 3221 are provided in the circumferential direction of the outer ring wall 324 of the middle ring, and are arranged in a circle.

Further, as shown in FIGS. 11-14 , the outer ring surface of the outer ring wall 324 of the middle ring is provided with an annular flame stabilization groove 3242 , and the annular flame stabilization groove 3242 is provided below the air outlet of the first combustion hole 3221 . , the middle ring fire hole 322 further includes a second fire hole 3222 , and the gas outlet of the second fire hole 3222 is arranged on the lower side groove wall of the annular flame stabilization groove 3242 . Specifically, a plurality of the second combustion holes 3222 are provided in the circumferential direction of the outer ring wall 324 of the middle ring.

Further, as shown in FIGS. 11-14 , the annular flame stabilization groove 3242 intersects with the first combustion hole 3221 to form a serial gas communication port 3223 .

In a further embodiment of the present invention, based on the structure of the fire cover assembly 30 above, the structure of the fire cover assembly is further designed to prevent the inner ring fire cover from loosening during use, which will be described in detail below.

Further, as shown in FIGS. 1-5 , a disengagement prevention structure is provided between the inner ring fire cover 33 and the middle ring fire cover 32 .

Moreover, by disposing an anti-detachment structure between the inner ring fire cover 33 and the middle ring fire cover 32, the inner ring fire cover 33 and the middle ring fire cover 32 are mutually limited, so that the inner ring fire cover 33 can be prevented from being damaged in the burner. 100 is loosened during use, so that the inner ring fire cover 33 can be prevented from being separated from the middle ring fire cover 32, so as to improve the user experience.

Further, as shown in FIGS. 1-5 , the anti-detachment structure is provided between the lower surface of the annular cover body 334 and the middle-ring fire cover 32 . In this way, the design of the anti-detachment structure can be facilitated, and the space required for the design can be reduced.

Further, as shown in the figure, the anti-detachment structure is provided on the lower surface of the annular cover body 334 and the upper surface of the middle ring top wall 325 . In this way, the anti-drop structure can be further provided based on the specific structure of the fire cover assembly.

Further, as shown in Figures 2-5, 11-14, and 18-20, the anti-detachment structure is a snap-on structure. In this way, installation can be facilitated.

Further, as shown in FIGS. 11-14 and 18-20 , the anti-detachment structure includes a plurality of first hooks 336 protrudingly disposed on the lower surface of the annular cover 334 and distributed along the circumferential direction, and protruding On the upper surface of the top wall 325 of the middle ring and distributed along the circumferential direction are a plurality of second hooks 327 and an anti-drop ring (not shown), the adjacent first hooks 336 and second hooks 327 are dislocated, the first hooks 336 and the second hooks 327 are both hooked to the anti-drop ring, and the hooking directions of the first hooks 336 and the second hooks 327 are opposite to each other. Wherein, the hooking direction refers to the direction in which the anti-drop ring blocks the movement of the hook. In the present invention, the hooking direction of the first hook 336 is mainly upward, and the hooking direction of the second hook 327 is mainly in the direction of the hook. Down.

In this way, the annular cover body 334 and the top wall 325 of the middle ring can be connected together by means of the anti-releasing ring, so that the anti-dropping effect on the inner ring fire cover 33 can be achieved.

Moreover, the adjacent first hooks 336 and the second hooks 327 are dislocated to avoid interference between the first hooks 336 and the second hooks 327 , thereby reducing the difficulty of installation.

Further, as shown in FIGS. 18-20 , the first hook 336 includes a first support protrusion 3361 protruding from the lower surface of the annular cover 334 , and a direction of the first support protrusion 3361 . The first locking convex portion 3362 on the side of the anti-dropping ring is clamped on the side of the first locking convex portion 3362 facing the lower surface of the annular cover 334 . In this way, the hooking direction of the first hook 336 is mainly downward.

As shown in FIGS. 11-14 , the second hook 327 includes a second supporting protrusion 3271 protruding from the upper surface of the top wall 325 of the middle ring, and an orientation preventing protrusion 3271 provided on the second supporting protrusion 3271 . The second latching convex portion 3272 on the side of the disengagement ring is clamped on the side of the second latching convex portion 3272 facing the upper surface of the top wall 325 of the middle ring. In this way, the hooking direction of the first hook 336 can be mainly upward.

Further, as shown in FIGS. 18-20 , the first hook 336 further includes a limiting convex portion 3363 disposed on the side of the first supporting convex portion 3361 facing the anti-drop ring. The limiting convex portion The 3363 and the first locking protrusion 3362 are spaced apart to form a locking groove 3364 between the limiting protrusion 3363 and the first locking protrusion 3362 , and the anti-drop ring is clamped to the locking groove 3364 .

In this way, when assembling, the anti-releasing ring can be installed in the retaining groove 3364 of the inner ring fire cover 33 first, and then installed in the middle ring fire cover 32 together. In this way, when the anti-drop ring and the inner ring fire cover 33 are installed together on the middle ring fire cover 32, since the anti-drop ring is clamped in the clamping groove 3364, the anti-drop ring can be initially limited to reduce the difficulty of installation.

In this embodiment, the limiting convex portion 3363 connects the lower surface of the annular cover 334 and the side surface of the first supporting convex portion 3361 facing the anti-drop ring, so as to improve the structural strength of the first hook 336 .

Of course, the anti-drop ring can also be fixed on the inner fire cover or the middle ring fire cover 32 by other structures. A locking groove 3364 is formed between the portion 3363 and the second locking convex portion 3272;

Specifically, the number of the first hooks 336 is greater than or equal to 2 and less than or equal to 10, such as 3, 4, 5, 6, 7, and 8.

Specifically, the number of the second hooks 327 is greater than or equal to 2, and less than or equal to 10, such as 3, 4, 5, 6, 7, and 8.

Specifically, the anti-drop ring is a high temperature resistant part to prevent deformation at high temperature. Optionally, the anti-drop ring is a metal piece, such as a steel ring.

Further, as shown in FIGS. 11-14 and 18-20 , the number of the first hooks 336 is greater than the number of the second hooks 327 . In this way, the connection strength can be ensured, and the installation difficulty can also be reduced.

Of course, in other embodiments, the anti-detachment structure may also be provided in other structural forms. For example, in some embodiments, the anti-detachment structure may include a structure protruding from the lower surface of the annular cover 334 and extending in the circumferential direction. A plurality of distributed first anti-dropping pieces, and a plurality of second anti-dropping pieces protruding from the upper surface of the top wall 325 of the middle ring and distributed along the circumferential direction, a plurality of first anti-dropping pieces and a plurality of second anti-dropping pieces The anti-dropping pieces are arranged in a one-to-one correspondence, the side of the first anti-dropping piece facing the second anti-dropping piece and the side of the second anti-dropping piece facing the first anti-dropping piece, one of which is provided with a limit extending along the circumferential direction Rotary groove, another picture is provided with a limit rotary protrusion, the limit rotary protrusion is clamped in the limit rotary groove, during installation, the first anti-dropping piece and the second anti-dropping piece are dislocated, and then the inner ring is rotated. cover 33, so that the limit screw protrusion is screwed into the limit screw groove; for another example, in another part of the embodiment, the anti-detachment structure can be made to include a protrusion disposed on the lower surface of the annular cover body 334 and along the circumference A plurality of undercuts distributed in the direction, and a plurality of card grooves arranged on the upper surface of the top wall 325 of the middle ring and distributed along the circumferential direction, a plurality of first undercuts and a plurality of card grooves are arranged in a one-to-one correspondence, and all the The upside-down buckle is snapped into the slot; for another example, the anti-detachment structure can be set as a screw locking structure. Two connecting holes, the screw passes through the first connecting hole and is threadedly connected with the second connecting hole; and so on.

Of course, in other embodiments, the anti-detachment structure can also be arranged at other positions, such as between the upper end of the outer ring wall 324 of the middle ring and the peripheral edge of the ring cover 334 , and the like.

The structure of the burner assembly 10 will be described below.

In one embodiment, as shown in FIGS. 1-8, the burner assembly 10 includes a burner head 11 and a detachable ejector tube 18, the burner head 11 has a universal air inlet passage and a central through hole 135, the The detachable ejection tube 18 is installed on the bottom of the burner head 11 , and the detachable ejection tube 18 communicates with the central through hole 135 to form the central air inlet channel 1c.

Further, as shown in FIGS. 1-8 , the burner head 11 includes a first ejector pipe joint 12 and an inner ring annular portion 13 having an inner ring inlet ring groove 134 and a central through hole 135 . The bottom portion of the annular portion 13 protrudes downward to form an inner-ring half-ring intake convex portion 131 , and the first ejection pipe joint 12 is connected to the outer side of the inner-ring half-ring intake convex portion 131 . The bottom of the ring-shaped portion 13 is provided with a detachable installation position located on one side of the inner ring half-ring inlet convex portion 131, and the detachable ejection pipe 18 is detachably connected to the detachable installation position, so that all the The detachable ejection tube 18 communicates with the central through hole 135 .

Specifically, the central air intake passage 1c includes the pipe of the detachable ejection pipe 18 and the central through hole 135 , and the central air intake passage 1b includes the conduit of the first ejection pipe joint 12 and the inner ring air intake ring groove 134 .

Further, as shown in FIGS. 1-8 , the detachable ejection pipe 18 includes a vertical mounting portion 181 and a lateral air intake portion 182 disposed at the lower end of the vertical mounting portion 181 ; the vertical mounting portion The 181 is mounted on the bottom of the inner ring annular portion 13 through a detachable installation position, and the laterally extending portion extends away from the inner ring annular portion 13 on one side of the inner ring half-ring inlet convex portion 131 . The transverse air inlet portion 182 has a gas inlet, and gas can enter the detachable ejector pipe 18 from the gas inlet.

Further, as shown in FIGS. 1-8 , the bottom of the inner ring annular portion 13 is provided with a plurality of mounting convex portions 132 , and the plurality of mounting convex portions 132 are distributed at intervals along the circumferential direction of the central through hole 135 ; the The detachable mounting position includes a mounting hole 1321 provided on the mounting convex portion 132 .

As shown in FIGS. 1-8 , the detachable ejection tube 18 includes a plurality of connecting lugs 183 , and the plurality of the connecting lugs 183 are provided in a one-to-one correspondence with the plurality of the mounting convex portions 132 . The ear 183 is provided with a connection hole 1831 , and the connection hole 1831 and the installation hole 1321 are connected by screws, so that the detachable ejector tube 18 is detachably connected to the detachable installation position.

Specifically, as shown in FIGS. 1-8 , a plurality of the connecting lugs 183 are provided on the upper end of the circumferential surface of the vertical mounting portion 181 and are distributed at intervals along the circumferential direction.

Specifically, the number of the mounting protrusions 132 is greater than or equal to two, and less than or equal to five, such as two or three.

Specifically, the bottom of the inner ring annular portion 13 is provided with an extension ring protrusion 133 on the periphery of the central through hole 135 .

Further, as shown in FIGS. 1-8 , the burner head 11 further includes a second ejection pipe joint 16 , an inner and outer connecting portion 14 , and an outer ring annular portion 15 having an outer ring inlet ring groove 151 . The annular portion 13 is disposed on the inner side of the outer annular portion 15 , and the inner and outer connecting portions 14 connect the inner annular portion 13 and the outer annular portion 15 .

Optionally, there are multiple inner and outer connecting parts 14 .

Specifically, as shown in FIGS. 1-8 , one of the inner and outer connecting portions 14 is also connected to one of the mounting protrusions 132 .

Specifically, as shown in FIGS. 1-8 , the bottom portion of the outer ring annular portion 15 protrudes downward to form the outer ring half-ring air inlet convex portion 152 , and the second ejection pipe joint 16 is connected to the outer ring half ring. Ring inlet protrusion 152 , the extending direction of the second ejection pipe joint 16 is the same as the extending direction of the first ejection pipe joint 12 .

Specifically, the outer ring air inlet channel 1a includes the pipe of the second ejection pipe joint 16 and the outer ring air inlet ring groove 151 .

Specifically, the first ejection pipe joint 12 is connected with a first universal ejection pipe 50 , and the second ejection pipe joint 16 is connected with a second universal ejection pipe 60 .

The present invention also provides a gas stove, which includes a burner. The specific structure of the burner refers to the above-mentioned embodiments. Since the gas stove of the present invention adopts all the technical solutions of all the above-mentioned embodiments, it has at least the above-mentioned embodiments. All the beneficial effects brought by the technical solution will not be repeated here.

The above descriptions are only optional embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, any equivalent structural transformations made by using the contents of the description and drawings of the present invention, or direct/indirect Applications in other related technical fields are included in the scope of patent protection of the present invention.

Claims (15)

1. A gas distribution plate, characterized in that it has:

at least two annular gas channels which are distributed from inside to outside at intervals along the radial direction; and

the secondary air channel comprises a central air channel positioned on the inner side of the innermost annular gas channel and a hidden air channel which penetrates through at least one annular gas channel and communicates the outside air with the central air channel.

2. The gas distributor according to claim 1, wherein there are three annular gas passages, respectively an outer annular gas passage, a middle annular gas passage and an inner annular gas passage, and said central air passage is provided inside said inner annular gas passage.

3. The gas distributor plate according to claim 2, wherein the inner annular wall of said outer annular gas passage is spaced from the outer annular wall of said middle annular gas passage;

the hidden air channel comprises an interval air channel which is positioned between the inner ring wall of the outer ring gas channel and the outer ring wall of the middle ring gas channel and is communicated with the outside air, and an inner transverse air channel which sequentially penetrates through the middle ring gas channel and the inner ring gas channel and is communicated with the interval air channel and the central air channel.

4. The air distributor disc of claim 3 wherein said hidden air passage further comprises an outer transverse air passage through said outer annular combustion gas passage communicating said spacer air passage with ambient air.

5. The gas distribution disc of claim 4, wherein the outer transverse air passage is distributed in plurality at intervals in the circumferential direction of the outer ring gas passage.

6. The air distribution plate of claim 5, wherein one of the outer transverse air passages is disposed in correspondence with the inner transverse air passage.

7. Air distributor disc according to claim 4, wherein the inner transverse air channels are divergent in the radially outward direction and/or the outer transverse air channels are divergent in the radially outward direction.

8. The air distributor according to claim 4, wherein the circumferential width of said inner transverse air passages increases in a radially outward direction such that said inner transverse air passages diverge in a radially outward direction; and/or the presence of a gas in the gas,

the circumferential width of the outer transverse air channel is gradually increased in the radial outward direction, so that the outer transverse air channel is gradually expanded in the radial outward direction.

9. The gas distributor plate of claim 4, wherein said inner annular wall of said middle ring gas gallery and said outer annular wall of said inner ring gas gallery are the same annular wall.

10. The gas distributor plate according to claim 4, wherein the inner annular wall of said inner annular gas gallery is configured to form a side wall of said central air gallery.

11. The gas-distributing disk according to any one of claims 4 to 10, wherein the gas-distributing disk comprises an annular partition plate provided between and connecting the inner annular wall of the outer ring gas passage and the outer annular wall of the middle ring gas passage, and the separation air passage is formed on an upper side of the annular partition plate.

12. The air distributor disc according to claim 11, wherein the outer peripheral edge of said annular divider plate is connected to the lower channel wall of said outer transverse air channel and/or the inner peripheral edge of said annular divider plate is connected to the lower channel wall of said inner transverse air channel.

13. The gas distribution plate according to any one of claims 1 to 10, wherein the lower end of the outer annular wall of the innermost annular gas passage protrudes downward beyond the outer annular walls of the other annular gas passages to form a guide mounting structure when assembled with the burner assembly.

14. A burner comprising a gas distributor plate as claimed in any one of claims 1 to 13.

15. A gas burner comprising a burner as claimed in claim 14.

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