CN213066104U - Fire lid subassembly, combustor and gas-cooker - Google Patents

Abstract

The utility model discloses a fire cover assembly, a burner and a gas stove, wherein, the fire cover assembly comprises a middle ring fire cover and an inner ring fire cover, the middle ring fire cover is provided with a middle ring annular hole and a middle ring fire cavity with an opening at the lower end; the inner ring fire cover is arranged in the middle ring annular hole, an inner ring fire cavity is formed between the inner ring fire cover and the middle ring fire cover, the middle ring fire cover is provided with an inner ring fire hole communicated with the inner ring fire cavity, and an anti-falling structure is arranged between the inner ring fire cover and the middle ring fire cover. Thus, the inner ring fire cover can be prevented from being loosened in the using process of the burner.

Description

Fire lid subassembly, combustor and gas-cooker

Technical Field

The utility model relates to a cooking utensils technical field, in particular to fire lid subassembly, combustor and gas-cooker.

Background

In the related art, in order to improve the firepower and the uniformity of firepower of the gas stove, the burner of the gas stove adopts a three-ring fire mode for supplying fire, namely, three rings of flames of inner ring fire, middle ring fire and outer ring fire can be formed in sequence from inside to outside when the burner works. The specific method is that an inner ring fire cover, a middle ring fire cover and an outer ring fire cover are sequentially arranged from inside to outside along the radial direction, wherein a circle of inner ring fire holes are formed in the inner ring fire cover, a circle of middle ring fire holes are formed in the middle ring fire cover, and a circle of outer ring fire holes are formed in the outer ring fire cover so as to realize three-ring fire supply.

However, with the above burner structure, the inner ring fire cover is easily loosened and separated from its assembling position during the use of the burner, thereby affecting the use experience of the user.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a fire lid subassembly aims at solving the correlation technique in, the easy not hard up technical problem of inner ring fire lid of combustor.

In order to achieve the above object, the utility model provides a fire lid subassembly, fire lid subassembly includes:

the middle ring fire cover is provided with a middle ring hole and a middle ring fire cavity with an opening at the lower end; and

the inner ring fire cover is installed in the middle ring annular hole, an inner ring fire cavity is formed between the inner ring fire cover and the middle ring fire cover, the inner ring fire hole communicated with the inner ring fire cavity is formed in the middle ring fire cover, and an anti-falling structure is arranged between the inner ring fire cover and the middle ring fire cover.

Optionally, the inner ring fire cover comprises an annular cover body and an inner ring inner annular wall, the inner ring inner annular wall is arranged on the lower surface of the annular cover body, and an annular hole of the inner ring inner annular wall is arranged corresponding to an annular hole of the annular cover body; the periphery of the annular cover body is connected with the periphery of the middle ring annular hole in a sealing fit mode, and the inner annular wall of the inner ring is arranged in the middle ring annular hole so that the inner ring fire cavity is formed between the inner ring fire cover and the middle ring fire cover.

Optionally, the anti-dropping structure is arranged between the lower surface of the annular cover body and the middle ring fire cover.

Optionally, the middle ring fire cover comprises a middle ring outer ring wall, a middle ring top wall arranged on the inner ring surface of the middle ring outer ring wall, and a middle ring inner ring wall arranged on the inner edge of the middle ring top wall;

the periphery of the annular cover body is connected with the upper end of the outer ring wall of the middle ring in a sealing fit manner, and the annular cover body and the top wall of the middle ring are arranged at intervals so as to form the inner ring fire cavity between the inner ring fire cover and the middle ring fire cover;

the anti-falling structure is arranged between the lower surface of the annular cover body and the upper surface of the middle ring top wall.

Optionally, the middle ring top wall extends downward in a direction toward the ring center, so that the middle ring top wall is spaced apart from the annular cover body.

Optionally, the anti-disengaging structure is a clamping structure, or the anti-disengaging structure is a screw locking structure.

Optionally, the anti-disengaging structure is a clamping structure;

anti-disengaging structure includes protruding a plurality of first trips that locate and distribute along circumference of the lower surface of annular lid body and protruding locating the upper surface of zhonghuan roof and along a plurality of second trips that circumference distributes, and anticreep circle, it is adjacent first trip with the second trip dislocation set, first trip with the equal joint of second trip in anticreep circle, just first trip with the hookup opposite direction of second trip.

Optionally, the first hook includes a first supporting protrusion protruding from a lower surface of the annular cover body, a first clamping protrusion disposed on a side surface of the first supporting protrusion facing the anti-slip ring, and a limiting protrusion of the first supporting protrusion facing the side surface of the anti-slip ring, the first clamping protrusion and the limiting protrusion are disposed at an interval to form a clamping groove between the first clamping protrusion and the limiting protrusion, and the anti-slip ring is clamped in the clamping groove; and/or the presence of a gas in the gas,

the second trip includes that the protruding second that locates the upper surface of well roof supports the convex part, and locates the orientation of second support convex part the second screens convex part of the side of anticreep circle, anticreep circle joint in the orientation of second screens convex part one side of the upper surface of well roof.

Optionally, the number of the first hooks is greater than the number of the second hooks.

Optionally, the upper end of the outer ring wall of the middle ring protrudes upwards from the top wall of the middle ring, the lower surface of the periphery of the annular cover body is provided with an annular accommodating groove, and the upper end of the outer ring wall of the middle ring is arranged in the annular accommodating groove.

Optionally, the middle ring top wall extends obliquely downward in a direction toward the ring center.

Optionally, the annular cover body extends downwards in the direction towards the ring center, an annular protrusion is arranged on the upper surface of the annular cover body, the annular protrusion is arranged outside the annular hole of the annular cover body, and the gas outlet of the inner ring fire hole is arranged on the annular protrusion.

Optionally, the gas outlet of the inner ring fire hole is arranged on the top surface of the annular protrusion; and/or the presence of a gas in the gas,

and a flow guide notch is arranged on the annular bulge.

The utility model also provides a combustor, include as above the gas distribution dish.

The utility model discloses still provide a gas-cooker, include as above the combustor.

The utility model discloses fire lid subassembly is installed in the zhonghuan annular ring of zhonghuan fire lid through making inner ring fire lid to enclose between inner ring fire lid and the zhonghuan fire lid and close and form inner ring fire chamber, so can form inner ring fire chamber with the help of the zhonghuan pot lid, thereby can be favorable to reducing the radial dimension of combustor on the one hand, on the other hand also can be favorable to increasing inner ring fire chamber, thereby can increase inner ring fire chamber on the basis of the miniaturized design of realization combustor and gas-cooker.

Moreover, through set up anti-disengaging structure between inner ring fire lid and zhonghuan fire lid to it is spacing mutually to cover inner ring fire lid and zhonghuan fire, can prevent that the inner ring fire from covering not hard up in the combustor use, thereby can prevent that the inner ring fire from covering in the lid breaks away from, cover with the improvement user experience.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of a viewing angle in an embodiment of the burner of the present invention;

FIG. 2 is a schematic view of the combustor of FIG. 1 from another perspective;

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

FIG. 4 is a partial schematic view of the upper middle portion of the burner of FIG. 3;

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

FIG. 6 is a cross-sectional view of the burner of FIG. 1 taken through the centerline of a first burner orifice;

FIG. 7 is a schematic view of the burner of FIG. 3;

FIG. 8 is a schematic cross-sectional view of the burner of FIG. 7;

FIG. 9 is a schematic view of the burner of FIG. 7 from another perspective;

FIG. 10 is a schematic structural view of the air distribution plate of FIG. 3;

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

FIG. 12 is a schematic view of the fire cover of FIG. 3;

FIG. 13 is a schematic view of the middle fire cover of FIG. 12 from another perspective;

FIG. 14 is a cross-sectional view of the middle fire cover of FIG. 12;

FIG. 15 is a schematic cross-sectional view of the middle fire cover of FIG. 12 through a first fire hole;

FIG. 16 is a schematic view of the outer fire cover of FIG. 3;

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

FIG. 18 is a cross-sectional view of the outer fire cover of FIG. 16;

FIG. 19 is a schematic view of the inner fire cover of FIG. 3;

FIG. 20 is a schematic view of the inner fire cover of FIG. 19 from another perspective;

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

The reference numbers illustrate:

100. a burner; 10. a burner assembly; 11. a furnace end; 1a, an outer ring air inlet channel; 1b, a middle ring air inlet channel; 1c, a central air inlet channel; 12. a first ejector pipe joint; 13. an inner annular ring portion; 131. an inner ring semi-ring air inlet convex part; 132. a mounting boss; 1321. mounting holes; 133. the extension ring is convex; 134. an inner ring air inlet ring groove; 135. a central through hole; 14. an inner and outer connecting portion; 15. an outer annular ring portion; 151. an outer ring air inlet ring groove; 152. an outer ring semi-ring air inlet convex part; 16. a second ejector pipe joint; 18. the ejector pipe can be disassembled; 181. a vertical mounting portion; 182. a lateral air intake portion; 183. a connecting lug; 1831. connecting holes; 20. A gas distribution plate; 21. an outer ring gas channel; 211. an inner annular wall of the outer annular gas channel; 22. a middle ring gas channel; 221. the outer ring wall of the middle ring gas channel; 222. the inner annular wall of the middle ring gas channel; 23. an inner ring gas channel; 231. an inner ring wall of the inner ring gas channel; 24. a secondary air passage; 241. a spaced air channel; 242. a central air passage; 243. an inner transverse air passage; 244. an outer transverse air passage; 25. an annular partition plate; 30. a fire cover assembly; 31. an outer ring fire cover; 311. an outer ring combustion chamber; 312. An outer ring fire hole; 32. a middle ring fire cover; 321. a middle ring combustion chamber; 322. the fire hole is burned in the middle ring; 3221. a first fire hole; 3222. a second flame hole; 3223. a vent communication port; 323. a middle ring hole; 324. the outer ring wall of the middle ring; 3241. a firing hole; 3242. an annular flame stabilizing groove; 325. a middle ring top wall; 326. an inner annular wall of the middle ring; 327. a second hook; 3271. a second supporting convex part; 3272. a second detent projection; 33. an inner ring fire cover; 331. an inner ring combustion chamber; 332. an inner ring fire hole; 333. an inner ring annular hole; 334. an annular cover body; 3341. an annular accommodating groove; 3342. an annular connecting portion; 3343. an annular inclined portion; 3344. an annular protrusion; 3345. an annular projection; 3346. a diversion gap; 335. an inner annular wall of the inner ring; 336. a first hook; 3361. a first support protrusion; 3362. a first detent projection; 3363. a limiting convex part; 3364. a clamping groove; 40. a flameout protection needle; 50. a first general ejector tube; 60. the second general ejector tube.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that if the embodiments of the present invention are described with reference to "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The utility model provides a divide gas dish, combustor and gas-cooker.

In an embodiment of the present invention, as shown in fig. 1, the burner 100 includes a burner assembly 10, a gas distribution plate 20 and a fire cover assembly 30, the gas distribution plate 20 is disposed above the burner assembly 10, and the fire cover assembly 30 is disposed above the gas distribution plate 20. Wherein, the burners can be divided into one-ring flame burners, two-ring flame burners, three-ring flame burners and more ring flame burners according to the number of rings of (ring) flames of the burners; hereinafter, the structure of the burner of the present invention will be described in detail mainly by taking a three-ring burner as an example.

The structure of the burner assembly 10, the gas distributor plate 20 and the fire cover assembly 30 and their mating structure will be described in detail below.

The present invention will be described below mainly with reference to the gas distribution plate 20.

In one embodiment, as shown in fig. 3, 9 and 10, the gas distribution plate 20 has at least two annular gas passages spaced from the inside to the outside in the radial direction, and secondary air passages including a central air passage located inside the innermost annular gas passage and a blind air passage passing through at least one of the annular gas passages to communicate the outside air with 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 disposed inside the inner annular gas passage 23.

Accordingly, as shown in fig. 2 to 8, the burner assembly 10 has at least two air inlet channels spaced from inside to outside along the radial direction, and is disposed corresponding to at least two annular gas channels one by one.

In this embodiment, the number of the intake passages is three, and the three intake passages are respectively an outer ring intake passage 1a, a middle ring intake passage 1b and a center intake passage 1c, wherein the outer ring intake passage 1a and the middle ring intake passage 1b are both annular passages, and the center intake passage 1c is a through hole.

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

Accordingly, as shown in fig. 2-5 and 11-20, the fire lid assembly 30 includes at least two fire lids arranged in a one-to-one correspondence with at least two annular gas passages, respectively.

In this embodiment, the fire covers are three, and 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, and the outer ring fire cover 31, the middle ring fire cover 32 and the inner ring fire cover 33 are all ring-shaped members and all have ring holes, wherein the ring hole of the outer ring fire cover 31 is an outer ring hole, the ring hole of the middle ring fire cover 32 is a middle ring hole 323, and the ring hole of the inner ring fire cover 33 is an inner ring hole 333.

Specifically, as shown in fig. 2-5 and 11-20, the outer ring fire cover 31 is installed above the gas distribution plate 20, the outer ring fire cover 31 has an outer ring fire cavity 311 annularly arranged and an outer ring fire hole 312 communicated with the outer ring fire cavity 311, the outer ring fire cavity 311 is communicated with the outer ring gas channel 21, the gas entering the outer ring gas inlet channel 1a can sequentially pass through the outer ring gas channel 21 and the outer ring fire cavity 311 and then be ejected from the outer ring fire hole 312, and the outer ring fire is formed after combustion.

As shown in fig. 2-5 and 11-20, the middle ring fire cover 32 is installed above the gas distributor 20, the middle ring fire cover 32 has a middle ring fire cavity 321 annularly arranged and a middle ring fire hole 322 communicated with the middle ring fire cavity 321, the middle ring fire cavity 321 is communicated with the middle ring gas channel 22, the gas entering the middle ring gas inlet channel 1b can sequentially pass through the middle ring gas channel 22 and the middle ring fire cavity 321, and then is ejected from the middle ring fire hole 322 to form a middle ring fire after combustion.

For the inner ring fire cover 33, the inner ring fire cover 33 can be arranged above the gas distribution plate 20, the inner ring fire cover 33 is provided with an inner ring fire cavity 331 which is annularly arranged and an inner ring fire hole 332 communicated with the inner ring fire cavity 331, the inner ring fire cavity 331 is communicated with the inner ring gas channel 23, gas entering the central air inlet channel 1c can sequentially pass through the inner ring gas channel 23 and the inner ring fire cavity 331 and then is sprayed out from the inner ring fire hole 332, and inner ring fire is formed after combustion. Or, as shown in fig. 2-5 and 11-20, the inner ring fire cover 33 is installed on the middle ring fire cover 32, an inner ring fire cavity 331 annularly arranged and an inner ring fire hole 332 communicated with the inner ring fire cavity 331 are formed by enclosing the inner ring fire cover 33 and the middle ring fire cover 32, the inner ring fire cavity 331 is communicated with the inner ring gas channel 23, and the gas entering the central air inlet channel 1c can sequentially pass through the inner ring gas channel 23 and the inner ring fire cavity 331 and then is ejected from the inner ring fire hole 332 to form the inner ring fire after combustion.

Wherein the inner annular ring hole 333 of the inner annular fire cover 33 is communicated with the central air passage 242. The external air can enter the central air channel 242 through the hidden air channel, then flows out from the outlet at the upper end of the inner ring hole 333 through the central air channel 242 and the inner ring hole 333, so as to supplement air for the inner ring fire and the middle ring fire, and thus supplement air for the combustion of the burner 100, so as to solve the problem that insufficient air supply is easy to occur in the use process of the three-ring fire burner 100 and the gas stove, and ensure that the gas flowing out from the inner ring fire hole 332 of the inner fire cover and the middle ring fire hole 322 of the middle fire cover is fully combusted.

The utility model discloses air distributor 20, through setting up secondary air passageway 24, can make the outside air can supply with the middle part of combustor 100 through hidden air passageway and central air channel 242 to can be located the annular flame of inner circle to the combustor 100 during operation and supply with the air, so that guarantee that the fuel fully burns, can solve combustor 100 and gas-cooker at the in-process that uses, the problem that air feed is not enough appears easily in the middle part.

Further, as shown in fig. 3, 9 and 10, the inner annular wall 211 of the outer ring gas passage is spaced apart from the outer annular wall 221 of the middle ring gas passage. Therefore, the distance between the outer ring gas channel 21 and the middle ring gas channel 22 can be increased, so as to avoid the over-concentration of the temperature at the bottom of the cooker and increase the uniformity of flame.

As shown in fig. 3, 9 and 10, the hidden air channel of the air distributor includes a spacing air channel 241 located between the inner annular wall 211 of the outer ring gas channel and the outer annular wall 221 of the middle ring gas channel and communicated with the outside air, a central air channel 242 located inside the inner ring gas channel 23, and an inner transverse air channel 243 sequentially passing through the middle ring gas channel 22 and the inner ring gas channel 23 and communicated with the spacing air channel 241 and the central air channel 242.

Wherein the inner annular ring hole 333 of the inner annular fire cover 33 is communicated with the central air passage 242. The external air may sequentially pass through the interval air passage 241, the inner transverse air passage 243, the central air passage 242 and the inner ring annular hole 333 and flow out from an outlet at the upper end of the inner ring annular hole 333, so as to supplement air to the inner ring fire and the middle ring fire, and thus supplement air to the combustion of the burner 100, so as to solve the problem that insufficient air supply is likely to occur during the use of the three-ring fire burner 100 and the gas cooker, and to ensure sufficient combustion of the gas flowing out of the inner ring fire hole 332 of the inner fire cover and the middle ring fire hole 322 of the middle fire cover.

So, set up secondary air passageway 24 according to the original structure of gas distribution plate 20 self of three ring fire combustor, be convenient for promote the volume of drawing of secondary air on the one hand, on the other hand is convenient for simplify gas distribution plate 20's structure.

Further, as shown in fig. 3, 9 and 10, the hidden air passage further includes an outer transverse air passage 244 communicating the spacer air passage 241 with the outside air through the outer ring gas combustion passage 21.

In this way, the external air on the side of the burner 100/gas range can be made to flow from the outer transverse air passage 244 into the spacing air passage 241 and further to the middle of the burner 100, thereby facilitating air replenishment of the burner 100.

Further, as shown in fig. 3, 9 and 10, the outer transverse air passage 244 is distributed in plurality at intervals in the circumferential direction of the outer ring gas passage 21.

In this way, it is possible to facilitate an increase in the amount of the external air supplied, so that the air supply is sufficient during the use of the three-ring fire burner 100 and the gas range.

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

Further, as shown in fig. 3, 9 and 10, one of the outer transverse air passages 244 is disposed corresponding to the inner transverse air passage 243. In this way, the external air introduced into the interval air channel 241 from the outer lateral air channel 244 can be easily flowed into the inner lateral air channel 243, so that the air supply speed and efficiency can be improved.

Further, as shown in fig. 3, 9 and 10, the outer transverse air passage 244 is divergent in a radially outward direction, and/or the inner transverse air passage 243 is divergent in a radially outward direction.

In this manner, the air inlets of the outer transverse air passage 244 and/or the inner transverse air passage 243 may be made larger, which may facilitate the flow of outside air into the outer transverse air passage 244 and/or may facilitate the flow of air within the gap air passage 241 into the inner transverse air passage 243.

In the present embodiment, the outer transverse air passage 244 is divergent in a radially outward direction, and the inner transverse air passage 243 is divergent in a radially outward direction.

Further, as shown in fig. 3, 9 and 10, the circumferential width of the inner transverse air passage 243 is gradually increased in the radially outward direction, so that the inner transverse air passage 243 is gradually expanded in the radially outward direction.

Of course, the inner transverse air passage 243 may be arranged to be gradually enlarged in the radial outward direction by other means, such as the axial height of the inner transverse air passage 243 is gradually increased in the radial outward direction, etc.

Further, as shown in fig. 3, 9 and 10, the circumferential width of the outer transverse air passage 244 increases in a radially outward direction, so that the outer transverse air passage 244 is gradually enlarged in a radially outward direction.

Of course, the outer transverse air passage 244 may be tapered in a radially outward direction in other ways, such as increasing the axial height of the outer transverse air passage 244 in a radially outward direction, etc.

It should be noted that the passage walls of the plurality of outer transverse air passages 244 may be separated into a plurality of outer ring gas through holes (not shown) spaced apart along the circumferential direction in the outer ring gas passage 21.

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

In this way, by making the inner annular wall 222 of the middle ring gas passage and the outer annular wall of the inner ring gas passage 23 be the same annular wall, the distance between the middle ring gas passage 22 and the inner ring gas passage 23 can be reduced, which is beneficial to reducing the radial size of the gas distribution plate 20 on one hand, and also convenient to reduce the distance between the middle ring fire and the inner ring fire on the other hand, thereby facilitating the improvement of the firepower in the middle of the burner 100.

Moreover, by using the inner annular wall 231 of the inner annular gas channel to form the side wall of the central air channel 242, on the one hand, the radial dimension of the gas distributor plate 20 can be reduced, and on the other hand, the central through hole 135 or the inner annular gas channel 23 can be enlarged.

Further, as shown in fig. 3, 9 and 10, the gas distributor 20 includes an annular partition plate 25 disposed between the inner annular wall 211 of the outer ring gas passage and the outer annular wall 221 of the middle ring gas passage and connecting the inner annular wall 211 of the outer ring gas passage and the outer annular wall 221 of the middle ring gas passage, and the partition air passage 241 is formed at an upper side of the annular partition plate 25.

Thus, the inner annular wall 211 of the outer ring gas passage and the outer annular wall 221 of the middle ring gas passage can be connected by the annular partition plate 25.

Further, as shown in fig. 3, 9 and 10, the outer periphery of the annular partition plate 25 is connected to the lower channel wall of the outer lateral air channel 244, and/or the inner periphery of the annular partition plate 25 is connected to the lower channel wall of the inner lateral air channel 243. Thus, on the one hand, the structure of the air distribution plate 20 can be simplified, and on the other hand, the hidden air channel can be made more smooth, so that the air can be conveniently circulated and absorbed.

Of course, in other embodiments, air through holes may be formed in the annular partition plate 25, so that the external air under the burner 100 and the gas range may also enter the spaced air channel 241; or, 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 a plurality of connecting ribs distributed at intervals along the circumferential direction, and a ventilation interval is formed between adjacent connecting ribs, so that the external air below the burner 100 and the gas stove can also enter the interval air channel 241; and so on.

Further, as shown in fig. 3, 9 and 10, the lower end of the outer annular wall of the innermost annular gas channel protrudes downward from the annular walls of the other annular gas channels to form a guide mounting structure when being assembled with the burner block assembly 10.

In this embodiment, the lower end of the outer annular wall of the inner annular gas channel 23 protrudes downward beyond the annular walls of the other annular gas channels to form a guide mounting structure when assembled with the burner block assembly 10.

Thus, when the gas distribution plate 20 and the burner assembly 10 are assembled, the downward protruding portion of the inner annular wall 231 of the inner annular gas channel can be aligned with the central gas inlet channel 1c of the burner assembly 10, for example, the inner annular wall 231 of the inner annular gas channel can be sleeved outside the side wall of the central gas inlet channel 1c, or the inner annular wall 231 of the inner annular gas channel can be sleeved inside the central gas inlet channel 1c, and then the gas distribution plate 20 and the burner assembly 10 are guided to approach each other, so as to achieve guiding installation.

The present invention will be mainly explained by the following fire cover assembly 30, which is formed by stacking the inner fire cover 33 and the middle fire cover 32 so as to enclose the inner fire chamber 331 between the inner fire cover 33 and the middle fire cover 32.

In one embodiment, as shown in fig. 2-5, the fire cover assembly 30 includes a middle fire cover 32 and an inner fire cover 33, and the inner fire cover 33 and the middle fire cover 32 are stacked such that an inner fire chamber 331 is defined between the inner fire cover 33 and the middle fire cover 32.

Specifically, as shown in fig. 11-14, the middle ring fire cover 32 has a middle ring hole 323, a middle ring fire cavity 321 with an open lower end, and a middle ring fire hole 322 communicated with the middle ring fire cavity 321. The middle ring hole 323 is a through hole, and the middle ring burning cavity 321 is a ring cavity.

The inner ring fire cover 33 is mounted to the middle ring fire cover 32.

Specifically, the inner ring fire cover 33 is installed in the middle ring hole 323, an inner ring fire cavity 331 is formed by enclosing the inner ring fire cover 33 and the middle ring fire cover 32, and the middle ring fire cover 32 is provided with an inner ring fire hole 332 communicated with the inner ring fire cavity 331.

Therefore, the utility model discloses fire lid subassembly 30 piles up through making inner ring fire lid 33 and installs in well fire lid 32, so that enclose between inner ring fire lid 33 and the well fire lid 32 and close formation inner ring fire chamber 331, so as to form inner ring fire chamber 331 with the help of well fire lid 32, can be favorable to reducing the radial dimension of combustor 100 on the one hand, on the other hand also can be favorable to increasing inner ring fire chamber 331, thereby can realize on the basis of the miniaturized design of combustor 100 and gas-cooker, can increase inner ring fire chamber 331.

Specifically, as shown in fig. 11 to 14, the inner ring fire cover 33 includes an annular cover body 334 and an inner ring inner annular wall 335, the inner ring inner annular wall 335 is disposed on the lower surface of the annular cover body 334, the periphery of the annular cover body 334 is connected with the periphery of the middle ring annular hole 323 in a sealing fit manner, the inner ring inner annular wall 335 is disposed in the middle ring annular hole 323, so as to form an inner ring fire chamber 331 enclosed between the inner ring fire cover 33 and the middle ring fire cover 32, wherein the annular cover body 334 is or substantially in the shape of an annular plate, and the inner ring fire chamber 331 is an annular chamber.

Thus, the middle ring fire cover 32 can form the outer ring wall of the inner ring fire cavity 311. Moreover, the inner ring fire cover 33 is simple in structure and convenient to manufacture.

The utility model discloses fire lid subassembly 30 is through making inner ring fire lid 33 include annular lid 334 and locate the inner ring inner annular wall 335 of annular lid 334 below to make inner ring inner annular wall 335 stretch into in the zhonghuan annular ring 323 of zhonghuan fire lid 32, in order to form the outer loop rampart of inner ring fire chamber 331 with the help of zhonghuan fire lid 32.

Moreover, by connecting the periphery of the annular cover 334 with the periphery of the middle ring hole 323 in a sealing fit manner, not only can the gas leakage in the inner ring fire chamber 331 be prevented, but also the upper end of the inner ring fire cover 33 can be arranged adjacent to the upper end of the middle ring fire cover 32, i.e. the upper end of the inner ring fire cover 33 and the upper end of the middle ring fire cover 32 are both arranged close to the same plane, so that the formation of a bulge or a particularly convex bulge on the upper surface of the burner 100 can be avoided.

Specifically, as shown in fig. 11-14, the inner ring fire hole 332 is formed in the annular cover 334. In this manner, the inner ring fire hole 32 can be easily designed.

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

Further, as shown in fig. 11-14, the middle ring fire cover 32 includes a middle ring outer-ring wall 324, a middle ring top wall 325 disposed on the inner ring surface of the middle ring outer-ring wall 324, and a middle ring inner-ring wall 326 disposed on the inner edge of the middle ring top wall 325, wherein the middle ring outer-ring wall 324, the middle ring top wall 325, and the middle ring inner-ring wall 326 surround to form the middle ring fire cavity 321. Wherein, the middle ring fire hole 322 is disposed on the middle ring outer ring wall 324.

The periphery of the annular cover 334 is connected with the upper end of the middle ring outer ring wall 324 in a sealing fit manner, and the middle ring top wall 325 at least partially extends downwards in the direction towards the ring center, so that the middle ring top wall (325) and the annular cover (334) are arranged at intervals. In this embodiment, the middle ring top wall 325 extends obliquely downward in a direction toward the center of the ring.

In this manner, by having the middle ring top wall 325 extend at least partially obliquely downward in the direction toward the ring center, the middle ring top wall 325 and the ring-shaped cover 334 can be disposed at a distance so as to enlarge the inner ring fire chamber 331 so as to enhance the fire power of the inner ring fire.

Moreover, the periphery of the annular cover 334 is connected with the upper end of the middle ring outer annular wall 324 in a sealing fit manner, so that the periphery of the annular cover 334 is connected with the periphery of the middle ring annular hole 323 in a sealing fit manner, the sealing fit connection structure can be simplified conveniently, the design difficulty can be reduced, and the production cost can be reduced.

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

Specifically, the ring hole corresponding to the portion of the middle ring outer annular wall 324 protruding out of 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 annular wall 326 are used together to form the middle ring annular hole 323, and the hole wall surface of the middle ring annular hole 323, the lower surface of the annular cover plate, and the ring wall surface of the inner ring inner annular wall 335 are used together to enclose to form the inner ring fire chamber 331.

Further, as shown in fig. 11-14, the lower surface of the periphery of the annular cover 334 is provided with an annular receiving groove 3341, and the upper end of the middle ring outer annular wall 324 is disposed in the annular receiving groove 3341. Thus, the positioning and installation between the annular cover body 334 and the middle ring outer ring wall 324 can be realized, and the sealing matching connection between the annular cover body 334 and the middle ring outer ring wall 324 can be conveniently realized and improved.

Further, as shown in fig. 11 to 14, the portion of the middle ring outer annular wall 324 protruding out of the middle ring top wall 325 is provided with a firing hole 3241 communicating with the inner ring firing chamber 331.

Specifically, as shown in fig. 4, the burner 100 further includes a flameout protection needle 40, a sensing end of the flameout protection needle 40 is disposed corresponding to the ignition hole 3241, and the flameout protection needle 40 is used for detecting whether the inner ring gas cavity is flameout.

Specifically, the ignition holes 3241 are provided in plural to improve detection accuracy.

Further, as shown in FIGS. 11-14, the annular cap 334 extends at least partially downwardly in a direction toward the center of the ring. Thus, overflow impurities such as oil drops and water can be conveniently guided into the inner annular ring 333, and the impurities such as the oil drops and the water can be conveniently discharged from the secondary air channel 24.

Alternatively, the passage bottom wall of the inner lateral air passage 243 is provided inclined downward in the radially outward direction, and/or the annular partition plate 25 is provided inclined downward in the radially outward direction, and/or the passage bottom wall of the outer lateral air passage 244 is provided inclined downward in the radially outward direction. Therefore, the drainage of oil drops, water and other impurities can be facilitated.

Specifically, the annular cover 334 includes an annular connecting portion 3342 and an annular inclined portion 3343 provided at an inner edge of the annular connecting portion 3342, the annular accommodating groove 3341 is provided at a lower surface of an outer peripheral edge of the annular connecting portion 3342, and the annular inclined portion 3343 extends obliquely downward in a direction toward a center of the ring.

Specifically, the edge of the upper surface of the annular connecting part 3342 is provided with an annular convex part 3344, and the inner side surface of the annular convex part 3344 extends downwards in the direction towards the center of the ring; thus, it is convenient to prevent impurities such as oil droplets and water from leaking from the periphery of the annular cover 334.

Specifically, the annular inclined portion 3343 is inclined downward at an angle smaller than that of the middle ring top wall 325.

Further, as shown in fig. 11 to 14, the annular cover 334 has an annular protrusion 3345 on its upper surface, and the air outlet of the inner ring fire hole 332 is formed on the annular protrusion 3345. Therefore, on one hand, the air outlet height of the inner ring fire can be improved, and on the other hand, sundries such as soup and the like overflowing to the upper surface of the annular cover plate can be prevented from blocking the inner ring fire hole 332.

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

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

Specifically, the air outlet of the inner ring fire hole 332 is formed in the top surface of the annular protrusion 3345. Thus, the blockage can be further prevented. Of course, the air outlets of the inner ring fire holes 332 may also be disposed on the inner or outer ring surface of the annular protrusion 3345.

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

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

Further, as shown in fig. 11-14, the annular projection 3345 is disposed adjacent to the inner annular ring 333 to provide an inner annular ring in the middle of the burner.

Further, as shown in fig. 11 to 14, the inner annular surface of the annular projection 3345 is inclined downward in a direction toward the center of the ring; and/or the outer annular surface of the annular protrusion 3345 is inclined downwards in the direction away from the center of the ring. So, on the one hand can be convenient for guide splash to annular protrusion 3345 on the overflow debris flow down, on the other hand still is convenient for the drawing of patterns to reduce the production degree of difficulty.

Further, as shown in fig. 11 to 14, the annular protrusion 3345 is provided with a flow guide notch 3346. Therefore, sundries such as oil drops and water guided to the annular protrusion 3345 can flow into the inner annular ring 333 from the guide notch 3346, so as to prevent the sundries from accumulating outside the annular protrusion 3345 and from overflowing the inner annular fire hole 332. Moreover, the air outlet of the inner ring fire hole 332 is arranged on the top surface or the inner ring surface of the annular protrusion 3345, so that overflow impurities such as oil drops and water can be prevented from flowing into or blocking the inner ring fire hole 332.

Further, as shown in fig. 11-14, the middle ring fire holes 322 include first fire holes 3221, and air outlets of the first fire holes 3221 are disposed on an outer annular surface of the middle ring outer annular wall 324. Specifically, the first fire holes 3221 are arranged in a plurality in the circumferential direction of the middle ring outer annular wall 324, and are arranged in a circle.

Further, as shown in fig. 11 to 14, an annular flame holding groove 3242 is disposed on an outer annular surface of the middle ring outer annular wall 324, the annular flame holding groove 3242 is disposed below an air outlet of the first flame holding hole 3221, the middle ring flame holding hole 322 further includes a second flame holding hole 3222, and an air outlet of the second flame holding hole 3222 is disposed on a lower side groove wall of the annular flame holding groove 3242. Specifically, the second flame holes 3222 are provided in plurality in the circumferential direction of the middle ring outer annular wall 324.

Further, as shown in fig. 11-14, the annular flame holding groove 3242 intersects the first firing hole 3221 to form a gas communication port 3223.

In a further embodiment of the present invention, on the basis of the structure of the upper fire cover assembly 30, 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 fig. 1 to 5, an anti-dropping structure is provided between the inner ring fire cover 33 and the middle ring fire cover 32.

Moreover, the anti-dropping structure is arranged between the inner ring fire cover 33 and the middle ring fire cover 32 to limit the inner ring fire cover 33 and the middle ring fire cover 32 mutually, so that the inner ring fire cover 33 can be prevented from being loosened in the use process of the burner 100, the inner ring fire cover 33 can be prevented from being separated from the middle ring fire cover 32, and the user experience is improved.

Further, as shown in fig. 1 to 5, the anti-dropping structure is disposed between the lower surface of the annular cover 334 and the middle fire cover 32. So, can be convenient for design anti-disengaging structure, reduce the required space of design.

Further, as shown, the anti-slip structure is disposed on the lower surface of the annular cover 334 and the upper surface of the middle ring top wall 325. Thus, the anti-dropping structure can be further arranged based on the specific structure of the fire lid assembly.

Further, as shown in fig. 2-5, 11-14, and 18-20, the anti-separation structure is a snap structure. Thus, installation can be facilitated.

Further, as shown in fig. 11-14 and 18-20, the anti-releasing structure includes a plurality of first hooks 336 protruding from the lower surface of the annular cover 334 and distributed along the circumferential direction, a plurality of second hooks 327 protruding from the upper surface of the middle ring top wall 325 and distributed along the circumferential direction, and an anti-releasing ring (not shown), the adjacent first hooks 336 and second hooks 327 are disposed in a staggered manner, the first hooks 336 and second hooks 327 are both fastened to the anti-releasing ring, and the fastening directions of the first hooks 336 and second hooks 327 are opposite. Wherein, the hookup direction is that the anticreep circle blocks the direction of trip motion the utility model discloses in, the hookup direction of first trip 336 mainly is upwards, the direction of colluding of second trip 327 is mainly downwards.

In this way, the annular cover 334 can be connected to the middle ring top wall 325 by the anti-slip ring, so that the anti-slip effect of the inner ring fire cover 33 can be achieved.

Moreover, the adjacent first hook 336 and the second hook 327 are arranged in a staggered manner, so that the interference between the first hook 336 and the second hook 327 can be avoided, and the installation difficulty can be reduced.

Further, as shown in fig. 18 to 20, the first hook 336 includes a first supporting protrusion 3361 protruding from the lower surface of the annular cover 334, and a first locking protrusion 3362 disposed on a side surface of the first supporting protrusion 3361 facing the anti-slip ring, and the anti-slip ring is locked to the side surface of the first locking protrusion 3362 facing the lower surface of the annular cover 334. Thus, the hooking direction of the first hook 336 is mainly downward.

As shown in fig. 11 to 14, the second hook 327 includes a second supporting protrusion 3271 protruding from the upper surface of the middle ring top wall 325, and a second locking protrusion 3272 disposed on a side surface of the second supporting protrusion 3271 facing the anti-slip ring, and the anti-slip ring is locked to a side of the second locking protrusion 3272 facing the upper surface of the middle ring top wall 325. Thus, the hooking direction of the first hook 336 is mainly upward.

Further, as shown in fig. 18 to 20, the first hook 336 further includes a limiting protrusion 3363 disposed on a side surface of the first supporting protrusion 3361 facing the anti-slip ring, the limiting protrusion 3363 and the first locking protrusion 3362 are disposed at an interval, so that a locking groove 3364 is formed between the limiting protrusion 3363 and the first locking protrusion 3362, and the anti-slip ring is locked in the locking groove 3364.

Thus, during assembly, the retainer ring can be first installed in the retaining groove 3364 of the inner ring fire cover 33 and then installed in the middle ring fire cover 32. Like this, when covering the anticreep circle and the inner ring fire and installing in well fire lid 32 together, because anticreep circle joint in screens groove 3364, can carry out preliminary spacing to the anticreep circle to reduce the installation degree of difficulty.

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

Of course, the retaining ring may be fixed on the inner fire cover or the middle fire cover 32 by other structures, for example, the limit protrusion 3363 may be disposed on the second support protrusion 3271, so as to form the retaining groove 3364 between the limit protrusion 3363 and the second retaining protrusion 3272; etc., which need not be described in detail herein.

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, 8, and the like.

Specifically, the number of the second hooks 327 is greater than or equal to 2, and less than or equal to 10, for example, 3, 4, 5, 6, 7, 8, etc. may be selected.

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

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

Of course, in other embodiments, the anti-releasing structure may be configured in other structural forms, for example, in some embodiments, the anti-releasing structure may include a plurality of first anti-releasing members protruding from the lower surface of the annular cover 334 and distributed along the circumferential direction, and a plurality of second anti-releasing members protruding from the upper surface of the middle ring top wall 325 and distributed along the circumferential direction, the plurality of first anti-releasing members and the plurality of second anti-releasing members are arranged in one-to-one correspondence, a side surface of the first anti-releasing member facing the second anti-releasing member and a side surface of the second anti-releasing member facing the first anti-releasing member are provided with a limit rotation groove extending along the circumferential direction, and the other figure is provided with a limit rotation protrusion, the limit rotation protrusion is clamped in the limit rotation groove, when being installed, the first anti-releasing member and the second anti-releasing member are arranged in a staggered manner, and then the inner ring fire cover 33 is rotated to make the limit rotation protrusion rotatably inserted in the limit rotation groove; for another example, in another embodiment, the anti-releasing structure may include a plurality of reverse buckles protruding from the lower surface of the annular cover 334 and distributed along the circumferential direction, and a plurality of slots arranged on the upper surface of the middle ring top wall 325 and distributed along the circumferential direction, wherein the plurality of first reverse buckles are arranged in one-to-one correspondence with the plurality of slots, and the reverse buckles are clipped in the slots; for another example, the anti-separation structure may be a screw locking structure, for example, a first connection hole is formed on the annular cover 334, a second connection hole is formed on the middle ring top wall 325, and a screw passes through the first connection hole and is in threaded connection with the second connection hole; and so on.

Of course, in other embodiments, the anti-slip structure may be disposed at other positions, such as between the upper end of the middle ring outer-ring wall 324 and the periphery of the ring-shaped cover 334.

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

In one embodiment, as shown in fig. 1-8, the burner assembly 10 includes a burner 11 and a removable ejector tube 18, the burner 11 having a common air inlet passage and a central through hole 135, the removable ejector tube 18 being mounted to the bottom of the burner 11, the removable ejector tube 18 being in communication with the central through hole 135 for forming a central air inlet passage 1 c.

Further, as shown in fig. 1 to 8, the furnace end 11 includes a first injection pipe joint 12, and an inner ring annular portion 13 having an inner ring air inlet ring groove 134 and a central through hole 135, a bottom portion of the inner ring annular portion 13 protrudes downward to form an inner ring half-ring air inlet protrusion 131, the first injection pipe joint 12 is connected to an outer side surface of the inner ring half-ring air inlet protrusion 131, a detachable mounting position is disposed at a bottom of the inner ring annular portion 13 on one side of the inner ring half-ring air inlet protrusion 131, and the detachable injection pipe 18 is detachably connected to the detachable mounting position, so that the detachable injection pipe 18 is communicated with the central through hole 135.

Specifically, the central air inlet passage 1c includes a pipeline of the detachable ejector pipe 18 and a central through hole 135, and the middle ring air inlet passage 1b includes a pipeline of the first ejector pipe joint 12 and an inner ring air inlet ring groove 134.

Further, as shown in fig. 1 to 8, the detachable ejector tube 18 includes a vertical mounting portion 181 and a transverse air inlet portion 182 disposed at a lower end of the vertical mounting portion 181; the vertical mounting portion 181 is mounted at the bottom of the inner annular portion 13 through a detachable mounting position, and the lateral extension portion extends in a direction away from the inner annular portion 13 on one side of the inner annular semi-ring air inlet protrusion 131. The transverse inlet 182 has a gas inlet from which gas can enter the removable ejector tube 18.

Further, as shown in fig. 1 to 8, the bottom of the inner annular ring portion 13 is provided with a plurality of mounting protrusions 132, and the plurality of mounting protrusions 132 are distributed at intervals along the circumferential direction of the central through hole 135; the removable mounting station includes a mounting hole 1321 provided in the mounting boss 132.

As shown in fig. 1 to 8, the detachable ejector tube 18 includes a plurality of connecting lugs 183, the connecting lugs 183 are disposed corresponding to the mounting protrusions 132, a connecting hole 1831 is disposed on the connecting lug 183, and the connecting hole 1831 is connected to the mounting hole 1321 by a screw, so that the detachable ejector tube 18 is detachably connected to a detachable mounting location.

Specifically, as shown in fig. 1 to 8, a plurality of the connecting lugs 183 are disposed at the upper end of the circumferential surface of the vertical mounting portion 181 and are circumferentially spaced apart.

Specifically, the number of the mounting protrusions 132 is greater than or equal to 2, and less than or equal to 5, and 2 or 3 may be taken.

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

Further, as shown in fig. 1 to 8, the burner 11 further includes a second injector joint 16, an inner and outer connection portion 14, and an outer annular portion 15 having an outer annular air inlet ring groove 151, the inner annular portion 13 is disposed inside the outer annular portion 15, and the inner and outer connection portion 14 connects the inner annular portion 13 and the outer annular portion 15.

Alternatively, a plurality of the inner and outer connecting portions 14 may be provided.

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

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

Specifically, the outer ring air inlet passage 1a includes a pipe of the second ejector pipe joint 16 and an outer ring air inlet ring groove 151.

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

The utility model discloses still provide a gas-cooker, this gas-cooker include the combustor, and the concrete structure of this combustor refers to above-mentioned embodiment, because the utility model discloses the gas-cooker has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (13)

1. A fire lid assembly, comprising:

the middle ring fire cover is provided with a middle ring hole and a middle ring fire cavity with an opening at the lower end; and

the inner ring fire cover is installed in the middle ring annular hole, an inner ring fire cavity is formed between the inner ring fire cover and the middle ring fire cover, the inner ring fire hole communicated with the inner ring fire cavity is formed in the middle ring fire cover, and an anti-falling structure is arranged between the inner ring fire cover and the middle ring fire cover.

2. The fire lid assembly of claim 1, wherein the inner ring fire lid comprises an annular lid body and an inner ring inner annular wall, the inner ring inner annular wall is arranged on the lower surface of the annular lid body, and the annular hole of the inner ring inner annular wall is arranged corresponding to the annular hole of the annular lid body; the periphery of the annular cover body is connected with the periphery of the middle ring annular hole in a sealing fit mode, and the inner annular wall of the inner ring is arranged in the middle ring annular hole so that the inner ring fire cavity is formed between the inner ring fire cover and the middle ring fire cover.

3. The fire lid assembly of claim 2 wherein said retaining structure is disposed between a lower surface of said annular lid body and said middle fire lid.

4. The fire lid assembly of claim 3, wherein said middle ring fire lid includes a middle ring outer ring wall, a middle ring top wall disposed on an inner ring surface of said middle ring outer ring wall, and a middle ring inner ring wall disposed on an inner edge of said middle ring top wall;

the periphery of the annular cover body is connected with the upper end of the outer ring wall of the middle ring in a sealing fit manner, and the annular cover body and the top wall of the middle ring are arranged at intervals so as to form the inner ring fire cavity between the inner ring fire cover and the middle ring fire cover;

the anti-falling structure is arranged between the lower surface of the annular cover body and the upper surface of the middle ring top wall.

5. The fire lid assembly of claim 4 wherein said middle ring top wall extends downwardly in a direction toward the center of the ring such that said middle ring top wall is spaced from said annular lid body.

6. The fire lid assembly of claim 5 wherein the retaining structure is a snap-fit structure or the retaining structure is a screw lock attachment structure.

7. The fire lid assembly of claim 5 wherein said retaining structure is a snap-fit structure;

anti-disengaging structure includes protruding a plurality of first trips that locate and distribute along circumference of the lower surface of annular lid body and protruding locating the upper surface of zhonghuan roof and along a plurality of second trips that circumference distributes, and anticreep circle, it is adjacent first trip with the second trip dislocation set, first trip with the equal joint of second trip in anticreep circle, just first trip with the hookup opposite direction of second trip.

8. The fire lid assembly according to claim 7, wherein the first hook comprises a first supporting protrusion protruding from a lower surface of the annular lid body, a first locking protrusion disposed on a side of the first supporting protrusion facing the anti-slip ring, and a limiting protrusion disposed on a side of the first supporting protrusion facing the anti-slip ring, the first locking protrusion and the limiting protrusion being spaced apart from each other to form a locking groove therebetween, and the anti-slip ring being locked in the locking groove; and/or the presence of a gas in the gas,

the second trip includes that the protruding second that locates the upper surface of well roof supports the convex part, and locates the orientation of second support convex part the second screens convex part of the side of anticreep circle, anticreep circle joint in the orientation of second screens convex part one side of the upper surface of well roof.

9. The fire lid assembly of claim 7 wherein the number of first catches is greater than the number of second catches.

10. The fire lid assembly according to any one of claims 4 to 9, wherein the upper end of the outer annular wall of the middle ring protrudes upward from the top wall of the middle ring, the lower surface of the periphery of the annular lid body is provided with an annular receiving groove, and the upper end of the outer annular wall of the middle ring is disposed in the annular receiving groove; and/or the presence of a gas in the gas,

the annular cover extends at least partially obliquely downwards in the direction of the ring center.

11. The fire lid assembly of any one of claims 2 to 9, wherein the upper surface of the annular lid body is provided with an annular projection, the annular projection is disposed outside the annular hole of the annular lid body, and the air outlet of the inner annular fire hole is disposed on the annular projection.

12. A burner comprising a fire cover assembly as claimed in any one of claims 1 to 11.

13. A gas burner comprising a burner as claimed in claim 12.

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