CN217382931U

CN217382931U - Combined burner

Info

Publication number: CN217382931U
Application number: CN202220895705.4U
Authority: CN
Inventors: 吴谢军; 李庸; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-09-06
Anticipated expiration: 2032-04-18

Abstract

The utility model provides a combined burner, including the furnace end, the infrared burner part, outer burner cap subassembly, interior burner cap, the furnace end includes first annular wall, the second annular wall, third annular wall, wherein, first annular wall forms outer air mixing chamber with the second annular wall, second annular wall forms interior air mixing chamber with the third annular wall, be formed with the secondary air passageway of intercommunication furnace end outside air in the first annular wall, the infrared burner part is installed in the top of second annular wall and third annular wall, be used for sealed interior air mixing chamber, outer burner cap subassembly is installed between first annular wall and infrared burner part, be used for sealed exterior air mixing chamber, interior burner cap is installed in the inboard of third annular wall, form the cavity between the outside of interior burner cap and the infrared burner part, in order to inhale the gas in the infrared burner part, inboard intercommunication secondary air passageway is used for infrared burner part, The outer fire cover assembly replenishes air. The utility model discloses heat load is big, the thermal efficiency is high and exhaust emission is low.

Description

Combined burner

Technical Field

The utility model relates to a technical field of gas-cooker, in particular to modular combustor.

Background

Common burners of gas cookers include atmospheric burners and infrared burners, and the two types of burners have advantages and disadvantages. The heat load of the atmospheric burner can be large enough (5.0kW), but the heat efficiency is not high as that of the infrared burner; the thermal efficiency of the infrared burner is higher than that of an atmospheric burner, but the thermal load is limited, and the highest thermal efficiency is 4.2Kw in the industry at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combined burner, advantage that can atmospheric burner and infrared burner, the heat load is big, and the thermal efficiency is high and exhaust emissions is low.

For realizing the purpose of the utility model, the utility model adopts the following technical scheme:

according to an aspect of the present invention, a combined burner is provided. The combined burner comprises a burner head, an infrared burner component, an outer burner cap component and an inner burner cap, wherein the burner head comprises a first annular wall, a second annular wall and a third annular wall, the first annular wall and the second annular wall form an outer air mixing cavity, the second annular wall and the third annular wall form an inner air mixing cavity, a secondary air channel communicated with air outside the burner head is formed in the first annular wall, the infrared burner component is arranged at the tops of the second annular wall and the third annular wall and used for sealing the inner air mixing cavity, the outer burner cap component is arranged between the first annular wall and the infrared burner component and used for sealing the outer air mixing cavity, the inner burner cap is arranged at the inner side of the third annular wall, and a cavity is formed between the outer side of the inner burner cap and the infrared burner component, so as to suck the gas in the infrared burner part, and the inner side of the inner fire cover is communicated with the secondary air channel for supplementing air to the infrared burner part and the outer fire cover assembly.

According to an embodiment of the present invention, wherein the infrared burner component comprises a fire divider, an infrared burner body, the fire divider comprises a first cylinder, a second cylinder and a bottom plate connected to the first cylinder and between the second cylinders, the bottom plate is placed on the top end of the second annular wall and on the top end of the third annular wall, the infrared burner body is installed between the first cylinder and the second cylinder.

According to the present invention, the second cylinder has a plurality of air holes formed at a lower portion thereof, wherein the air holes communicate with the cavity, so that the gas in the infrared burner part flows through the cavity into the inner fire cover.

According to the utility model discloses an embodiment, wherein, interior fire lid includes barrel portion, toper portion, barrel portion bottom install in third annular wall is inboard, the outside inwards sunken with the second drum forms the cavity, toper portion has seted up interior fire lid and has passed a fire groove, be used for to infrared combustion body transmits flame, just a plurality of interior fire lid fire holes have been seted up to the circumference of toper portion, wherein interior fire lid fire hole intercommunication the cavity.

According to the utility model discloses an embodiment, wherein, interior fire lid fire hole is the cylindrical through-hole that the downward sloping set up, just the axis in interior fire lid fire hole with the contained angle of the basal surface of toper portion is 40 ~ 75 to inhale fast gas in the cavity.

According to the utility model discloses an embodiment, wherein, outer fire lid subassembly includes outer fire lid mount pad, outer fire lid mount pad install in first annular wall, outer fire lid install in outer fire lid mount pad with between the distributor, be used for sealing outer air mixing chamber, wherein, outer fire lid biography fire groove has been seted up at the top of outer fire lid, outer fire lid fire hole, outer fire lid recess have been seted up to the lid circumference of outer fire lid, steady flame hole has been seted up to the tank bottom of outer fire lid recess.

According to an embodiment of the present invention, the outer fire cover fire holes and the flame stabilizing holes are all provided in a plurality, and the outer fire cover fire holes and the flame stabilizing holes are all arranged at equal intervals;

the outer fire cover fire hole and the flame stabilizing hole are cylindrical through holes which are obliquely arranged upwards, the included angle between the axis of the outer fire cover fire hole and the bottom surface of the outer fire cover is 40-75 degrees, and the included angle between the axis of the flame stabilizing hole and the bottom surface of the outer fire cover is 40-75 degrees.

According to the utility model discloses an embodiment, a modular combustor still includes that the dress trim cover lid is located the top of interior fire lid, and the bottom with interior fire lid forms dress trim cover air passage, a plurality of dress trim cover through-holes have been seted up at dress trim cover's top, wherein, dress trim cover through-hole and dress trim cover air passage be used for to infrared combustion body with outer fire lid supplyes secondary air.

According to an embodiment of the present invention, the combined burner further comprises an ignition needle assembly fixedly connected to an inner side of the third annular wall.

According to the utility model discloses an embodiment, wherein, first annular wall bottom intercommunication has the main pipe that draws to make the mist of gas and air get into outer gas mixture chamber, the bottom intercommunication of second annular wall has vice pipe that draws, so that the mist of gas and air gets into interior gas mixture chamber.

The utility model provides an embodiment has following advantage or beneficial effect:

the utility model discloses an adopt the mode of infrared and atmosphere combustor combination, the inner ring is infrared formula burning, and the outer loop is atmosphere formula burning, the utility model discloses the advantage of atmosphere combustor and infrared combustor has concurrently, and heat load is big, the thermal efficiency is high and exhaust emission is low, and product appearance is pleasing to the eye.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a schematic view of a combined combustor shown in accordance with an exemplary embodiment.

FIG. 2 is a cross-sectional view of a combi-burner shown according to an exemplary embodiment.

Fig. 3 is an enlarged view according to a in fig. 2.

Fig. 4 is a schematic view of a burner shown according to an exemplary embodiment.

FIG. 5 is a cross-sectional view of the outer fire lid shown in accordance with an exemplary embodiment.

FIG. 6 is a cross-sectional view of a distributor shown according to an exemplary embodiment.

FIG. 7 is a cross-sectional view of the inner fire cover shown in accordance with an exemplary embodiment.

Wherein the reference numerals are as follows:

1. a furnace end; 11. a first annular wall; 12. a second annular wall; 13. a third annular wall; 14. a main ejector pipe; 15. a secondary ejector tube; 100. an outer gas mixing cavity; 101. an inner gas mixing cavity; 102. a secondary air channel; 103. a cavity; 2. an infrared burner component; 21. a fire divider; 211. a first cylinder; 212. a second cylinder; 2121. air holes; 213. a base plate; 22. an infrared combustion body; 3. an outer fire cap assembly; 31. an outer fire cover mounting seat; 32. an outer fire cover; 321. the outer fire cover is provided with a fire transmission groove; 322. the fire hole is covered by the outer fire cover; 323. an outer fire cover groove; 3231. a flame stabilizing hole; 4. an inner fire cover; 41. a barrel portion; 42. a tapered portion; 421. the inner fire cover is provided with a fire transmission groove; 422. the fire hole is covered by the inner fire cover; 43. a protrusion; 5. a decorative cover; 51. a decorative cover through hole; 6. an ignition needle assembly.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

The terms "a," "an," "the," "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

Referring to fig. 1-7, fig. 1 is a schematic view of a modular combustor, according to an exemplary embodiment. FIG. 2 is a cross-sectional view of a modular combustor shown in accordance with an exemplary embodiment. Fig. 3 is an enlarged view according to a in fig. 2. Fig. 4 is a schematic view of the burner 1 according to an exemplary embodiment. Fig. 5 is a cross-sectional view of the outer fire cover 32 shown according to an exemplary embodiment. FIG. 6 is a cross-sectional view of the illustrated distributor 21 according to an exemplary embodiment. Figure 7 is a cross-sectional view of inner fire cover 4 shown according to one exemplary embodiment.

The utility model provides a combined burner of embodiment includes furnace end 1, infrared burner part 2, outer fire lid subassembly 3, interior fire lid 4, ignition needle subassembly 6, furnace end 1 includes first annular wall 11, second annular wall 12, third annular wall 13, main ejector pipe 14, vice ejector pipe 15, wherein, first annular wall 11 and second annular wall 12 form outer gas mixing chamber 100, second annular wall 12 and third annular wall 13 form interior gas mixing chamber 101, be formed with the secondary air passageway 102 of intercommunication furnace end 1 outside air in the first annular wall 11, form cavity 103 between the outside of interior fire lid 4 and infrared burner part 2, ignition needle subassembly 6 rigid coupling is in the inboard of third annular wall 13, infrared burner part 2 is installed in the top of second annular wall 12 and third annular wall 13, be used for sealed interior gas mixing chamber 101, outer fire lid subassembly 3 is installed between first annular wall 11 and infrared burner part 2, for sealing the outer air mixing chamber 100, the inner fire cover 4 is mounted on the inner side of the third annular wall 13 to suck the air in the infrared burner part 2, and the inner side of the inner fire cover 4 is communicated with a secondary air passage 102 for supplying air to the infrared burner part 2 and the outer fire cover assembly 3. The bottom of the first annular wall 11 is communicated with the main ejector pipe 14 so that the mixed gas of the fuel gas and the air enters the outer mixed gas cavity 100, and the bottom of the second annular wall 12 is communicated with the auxiliary ejector pipe 15 so that the mixed gas of the fuel gas and the air enters the inner mixed gas cavity 101. Wherein, the main ejector pipe 14 sprays the mist of gas and air into outer mist chamber 100 and sprays to outer mist chamber 100, vice ejector pipe 15 sprays the mist of gas and air into interior mist chamber 101 and then gets into infrared burner part 2, partial mist in the infrared burner part 2 is used for the burning of infrared burner part 2, the part can flow through and gets into interior burner cap 4 behind the cavity 103, and ignite by ignition needle subassembly 6, because interior burner cap 4 forms the negative pressure this moment and can be used for supplementing secondary air to infrared burner part 2 through secondary air passageway 102 with the air that inhales the furnace end 1 outside, outer burner cap subassembly 3, can effectively improve combustion efficiency, reduce the exhaust emission. This structure has combined the advantage of infrared formula combustor and atmosphere formula combustor simultaneously, and the heat load is big, and the thermal efficiency is high and exhaust emission is low, and in addition, ignition needle subassembly 6 is hidden in the inside of furnace end 1 for the product appearance is more pleasing to the eye. In this example, the mixed gas of the gas and the air is called as mixed gas, the air sucked into the cavity inside the inner fire cover 4 from the outer side of the burner head 1 by the inner fire cover 4 is called as secondary air, and the secondary air is used for supplementing the combustion of the infrared burner component 2 and the outer fire cover component 3, so that the combustion efficiency of the product is improved, and the exhaust emission is reduced.

In a preferred embodiment of the present invention, the infrared burner part 2 comprises a distributor 21 and an infrared burner 22, wherein the distributor 21 comprises a first cylinder 211, a second cylinder 212 and a bottom plate 213, a plurality of air holes 2121 are opened on the lower portion of the second cylinder 212, the bottom plate 213 is connected between the first cylinder 211 and the second cylinder 212, the bottom plate 213 is disposed on the top end of the second annular wall 12 and the top end of the third annular wall 13, the infrared burner 22 is disposed between the first cylinder 211 and the second cylinder 212, the air holes 2121 communicate with the cavity 103, so that the gas in the infrared burner part 2 flows through the cavity 103 and enters the inner fire cover 4.

As shown in fig. 5 and 7, the fire divider 21 is installed at the top end of the second annular wall 12 and the top end of the third annular wall 13, the bottom plate 213 is provided with a plurality of bottom plate 213 through holes for communicating with the inner mixed gas cavity 101, so that the mixed gas injected by the secondary ejector pipe 15 enters the inside of the fire divider 21 through the bottom plate 213 through holes, wherein part of the mixed gas is used for burning the infrared burner 22, and part of the mixed gas enters the cavity 103 through the air holes 2121 and finally enters the inner fire cover 4, thereby realizing ignition, avoiding the communication between the inner fire cover 4 and the ejector pipe, and increasing the secondary air channel 102, and effectively improving the combustion efficiency; in addition, a heat insulation plate is arranged in the distributor 21 to absorb the heat radiation of the infrared combustion body 22, thereby improving the combustion efficiency of the infrared combustor component 2.

In a preferred embodiment of the present invention, the inner fire cover 4 comprises a cylindrical body portion 41 and a tapered portion 42, the bottom of the cylindrical body portion 41 is mounted inside the third annular wall 13, the outer side is recessed inwards to form the cavity 103 with the second cylinder 212, the tapered portion 42 is provided with an inner fire cover fire transmission groove 421 for transmitting flame to the infrared combustion body 22, and the circumference of the tapered portion 42 is provided with a plurality of inner fire cover fire holes 422, the inner fire cover fire holes 422 are communicated with the cavity 103, the inner fire cover fire holes 422 are cylindrical through holes arranged in a downward inclination manner, and the axis of the inner fire cover fire holes 422 and the included angle of the bottom surface of the tapered portion 42 are 40-75 degrees so as to rapidly suck gas in the cavity 103.

As shown in fig. 2 and fig. 6-7, the inner fire cover fire hole 422 is communicated with the cavity 103, the cavity 103 is communicated with the distributor 21, therefore, the mixed gas in the distributor 21 can enter the inner fire cover 4 through the cavity 103 and be ignited by the ignition needle assembly 6, the flame is transmitted to the infrared burner 22 and the outer fire cover assembly 3 in sequence through the inner fire cover fire transmission groove 421, because the inner side of the inner fire cover 4 is communicated with the secondary air channel 102, the air outside the burner head 1 can be sucked, the secondary air supplement is carried out on the infrared burner 2 and the outer fire cover 32, the combustion efficiency is improved, and the exhaust emission is reduced.

In addition, the included angle between the axis of the inner fire cover fire hole 422 and the bottom surface of the conical part 42 is 40-75 degrees, the structure can rapidly suck the mixed gas in the cavity 103, the flow of the mixed gas is increased, and the combustion efficiency is improved.

In a preferred embodiment of the present invention, the outer fire cover assembly 3 includes an outer fire cover mounting seat 31 and an outer fire cover 32, the top of the outer fire cover 32 is opened with an outer fire cover fire transmission groove 321, the cover body of the outer fire cover 32 is opened with an outer fire cover fire hole 322 and an outer fire cover groove 323 in the circumferential direction, the bottom of the outer fire cover groove 323 is opened with a flame stabilizing hole 3231, the outer fire cover mounting seat 31 is mounted on the first annular wall 11, the outer fire cover 32 is mounted between the outer fire cover mounting seat 31 and the fire distributor 21 for sealing the outer air mixing chamber 100, wherein the outer fire cover fire holes 322 and the flame stabilizing holes 3231 are plural, and the outer fire cover fire holes 322 and the flame stabilizing holes 3231 are all arranged at equal intervals; the outer fire cover fire holes 322 and the flame stabilizing holes 3231 are all cylindrical through holes which are obliquely arranged upwards, the included angle between the axis of the outer fire cover fire holes 322 and the bottom surface of the outer fire cover 32 is 40-75 degrees, and the included angle between the axis of the flame stabilizing holes 3231 and the bottom surface of the outer fire cover 32 is 40-75 degrees.

As shown in fig. 1-2, the main injection pipe 14 injects the mixed gas into the outer gas mixing cavity 100, the mixed gas flows out through the outer fire cover fire holes 322, the inner fire cover 4 transmits the flame to the outer fire cover fire transmission grooves 321, and the mixed gas flowing out of the outer fire cover 32 is combusted.

In a preferred embodiment of the present invention, a combined burner further comprises a decoration cover 5 covering the top of the inner fire cover 4, and the bottom and the inner fire cover 4 form a decoration cover air channel, and a plurality of decoration cover through holes 51 are opened on the top of the decoration cover 5, wherein the decoration cover through holes 51 and the decoration cover air channel are used for supplying secondary air to the infrared burner 22 and the outer fire cover 32. As shown in fig. 1 to 2, at least 1 protrusion 43 is provided on the top of the inner fire cover 4, a decoration cover 5 is provided on the protrusion 43 to form a decoration cover air passage, and the decoration cover air passage and the decoration cover through hole 51 are communicated with the secondary air passage 102 to supplement secondary air to the infrared burner 22 and the outer fire cover 32.

Specifically, the assembly mode of the combined burner is as follows: firstly, an outer fire cover mounting seat 31, an inner fire cover 4 and an ignition needle are mounted on a furnace end 1; then, the outer fire cover 32 is mounted on the outer fire cover mounting seat 31; next, the infrared burner elements 2 are mounted on top of the second annular wall 12 and on top of the third annular wall 13; finally, the decorative cover 5 is mounted on the boss 43 of the inner fire cover 4.

In addition, the outer fire cover 32 and the infrared burner component 2 can also be fastened together by riveting or the like to form a combination of the outer fire cover and the infrared burner component, so that the burner is assembled in the following way: firstly, an outer fire cover mounting seat 31, an inner fire cover 4 and an ignition needle are mounted on a furnace end 1; next, the combination of the outer burner cap-outer burner part is placed on top of the second annular wall 12 and on top of the third annular wall 13; finally, the decorative cover 5 is mounted on the boss 43 of the inner fire cover 4.

Firstly, after the mixed gas enters the inner ring gas mixing cavity 101 and the infrared burner part 2 through the auxiliary ejector pipe 15, part of the mixed gas enters the cavity 103 through the gas holes 2121 on the distributor 21, and then enters the inner fire cover 4 through the inner fire cover fire holes 422. Then, after the ignition needle assembly 6 discharges and ignites the mixed gas flowing out from the inner fire cover fire hole 422, the flame is transmitted to the infrared burner 22 through the inner fire cover fire transmitting groove 421 on the inner fire cover 4, and the flame on the infrared burner 22 is transmitted to the outer fire cover fire hole 322 on the outer fire cover 32 through the outer fire cover fire transmitting groove 321, so that ignition is realized.

The ignition needle assembly 6 is installed on the secondary air passage 102 inside the burner 1, and the cosmetic cover 5 is installed on the protrusion 43 of the inner fire cover 4. In this embodiment, the secondary air channel 102 can suck air outside the burner 1, part of the air is the inner ring fire supplementing air, and the surplus air continues to go upward and supplement secondary air to the infrared burner 22 and the outer fire cover 32 through the decoration cover air channel and the decoration cover through hole 51. The utility model discloses, had concurrently the advantage of atmospheric burner and infrared burner, heat load is big, the thermal efficiency is high and exhaust emissions is low. The ignition needle is hidden inside the furnace end 1 by the assembly, so that the appearance of the product is more attractive.

In embodiments of the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" are used for indicating the position or the positional relationship based on the position or the positional relationship shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but not for indicating or implying that the indicated device or unit must have a specific direction, be constructed and operated in a specific position, and thus, should not be construed as limiting the embodiments of the present invention.

In the description herein, the description of the terms "one embodiment," "a preferred embodiment," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A modular burner, comprising:

the burner (1) comprises a first annular wall (11), a second annular wall (12) and a third annular wall (13), wherein the first annular wall (11) and the second annular wall (12) form an outer gas mixing cavity (100), the second annular wall (12) and the third annular wall (13) form an inner gas mixing cavity (101), and a secondary air channel (102) communicated with air outside the burner (1) is formed in the first annular wall (11);

an infrared burner part (2) mounted on the top of the second annular wall (12) and the third annular wall (13) for sealing the inner gas mixing chamber (101);

an outer burner cap assembly (3) mounted between the first annular wall (11) and the infrared burner part (2) for sealing the outer gas mixing chamber (100);

the inner fire cover (4) is installed on the inner side of the third annular wall (13), a cavity (103) is formed between the outer side of the inner fire cover (4) and the infrared combustor component (2) to suck gas in the infrared combustor component (2), and the inner side of the inner fire cover (4) is communicated with the secondary air channel (102) and used for supplementing air to the infrared combustor component (2) and the outer fire cover assembly (3).

2. The combined burner according to claim 1, characterized in that the infrared burner part (2) comprises:

a distributor (21) comprising a first cylinder (211), a second cylinder (212), and a bottom plate (213) connected between the first cylinder (211) and the second cylinder (212), wherein the bottom plate (213) is placed at the top end of the second annular wall (12) and the top end of the third annular wall (13);

an infrared burner (22) mounted between the first cylinder (211) and the second cylinder (212).

3. The combined burner of claim 2, wherein the second cylinder (212) has a plurality of air holes (2121) formed in the lower portion thereof, wherein the air holes (2121) communicate with the cavity (103) to allow the gas in the infrared burner part (2) to flow through the cavity (103) into the inner flame cover (4).

4. The combined burner of claim 2, characterized in that the inner fire cover (4) comprises:

a body portion (41) mounted at the bottom inside the third annular wall (13), the outer side being recessed inwards to form the cavity (103) with the second cylinder (212);

toper portion (42) has seted up interior fire lid and has passed fire groove (421), be used for to infrared combustion body (22) transmission flame, just a plurality of interior fire lid fire holes (422) have been seted up to the circumference of toper portion (42), wherein interior fire lid fire hole (422) intercommunication cavity (103).

5. The combined burner of claim 4, wherein the inner fire cover fire hole (422) is a cylindrical through hole which is arranged to be inclined downwards, and the included angle between the axis of the inner fire cover fire hole (422) and the bottom surface of the conical part (42) is 40-75 degrees so as to suck the gas in the cavity (103).

6. The combi-burner of claim 4, characterized in that the outer cap assembly (3) comprises:

an outer fire cover mounting seat (31) mounted to the first annular wall (11);

outer fire lid (32), install in outer fire lid mount pad (31) with between distributor (21), be used for sealing outer gas mixing chamber (100), wherein, outer fire lid biography fire groove (321) have been seted up at the top of outer fire lid (32), outer fire lid fire hole (322), outer fire lid recess (323) have been seted up to the lid circumference of outer fire lid (32), steady flame hole (3231) have been seted up to the tank bottom of outer fire lid recess (323).

7. The combined burner of claim 6, wherein the outer burner cap holes (322) and the flame stabilizing holes (3231) are all multiple, and the outer burner cap holes (322) and the flame stabilizing holes (3231) are all arranged at equal intervals;

the outer fire cover fire hole (322) and the flame stabilizing hole (3231) are all cylindrical through holes which are obliquely arranged upwards, the included angle between the axis of the outer fire cover fire hole (322) and the bottom surface of the outer fire cover (32) is 40-75 degrees, and the included angle between the axis of the flame stabilizing hole (3231) and the bottom surface of the outer fire cover (32) is 40-75 degrees.

8. The combined burner of claim 6, further comprising:

and the decorative cover (5) is covered at the top of the inner fire cover (4), the bottom of the decorative cover and the inner fire cover (4) form a decorative cover air channel, a plurality of decorative cover through holes (51) are formed in the top of the decorative cover (5), and the decorative cover through holes (51) and the decorative cover air channel are used for supplementing secondary air to the infrared combustion body (22) and the outer fire cover (32).

9. The combined burner of claim 1, further comprising an ignition needle assembly (6) affixed to the inside of said third annular wall (13).

10. The combined burner according to claim 1, characterized in that the bottom of the first annular wall (11) is communicated with a main ejector pipe (14) to make the mixed gas of gas and air enter the outer gas mixing cavity (100), and the bottom of the second annular wall (12) is communicated with a secondary ejector pipe (15) to make the mixed gas of gas and air enter the inner gas mixing cavity (101).