Novel burner structure

Abstract

The utility model discloses a novel burner structure which comprises an outer cavity gas inlet seat, a gas inlet main body, a fire outlet assembly and a central gas inlet assembly, and the outer cavity gas inlet seat comprises an outer ring gas inlet pipe body and an inner ring gas inlet pipe body; an outer ring air inlet cavity, an inner ring air inlet cavity and a center air inlet cavity are sequentially arranged on the air inlet body from outside to inside in a surrounding mode. The central fire outlet cover comprises an inner ring fire outlet part and a central fire outlet part, and the inner ring fire outlet part and the central fire outlet part are integrally formed; the outer-ring air inlet pipe body and the outer-ring air inlet cavity are communicated at the bottom of the outer-ring air inlet cavity to form an outer-ring independent air supply channel, the inner-ring air inlet pipe body and the inner-ring air inlet cavity are communicated at the bottom of the inner-ring air inlet cavity to form an inner-ring independent air supply channel, and the central air inlet assembly and the central air inlet cavity are communicated at the bottom of the central air inlet cavity to form a central independent air supply channel; the outer ring fire outlet cover is provided with an outer ring fire outlet hole, the center fire outlet cover is provided with an inner ring fire outlet hole and a center fire outlet hole, outer ring fire outlet, inner ring fire outlet and center fire outlet are achieved, the fire outlet face is increased, the combustion efficiency is improved, and larger fire power is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas stove, in particular to a novel combustor structure. BACKGROUND

[0002] When the stove is working, gas enters the stove from the air inlet pipe, enters the burner after being adjusted by the gas valve (the user can adjust it through the knob connected with the gas valve), and mixes with a part of air (this part of air is called primary air). These mixed gases are sprayed from the fire hole of the fire cap assembly above the burner, contact air (the air at this time is called secondary air) at the same time, and are ignited by the ignition device to form a flame. These flames are used to heat the pot and other waiting heating utensils placed on the pot support. The existing burners have various types such as gun head type, straight injection type, and combination of straight injection and straight insertion. In order to heat evenly, the burner generally has a middle ring and an outer ring for forming a middle ring fire and an outer ring fire. For example, the utility model patent with the patent number 202023105691.1 discloses a pressurized gas burner, which is a double-gun type burner, including a burner base and a fire cap seat arranged at the upper end thereof. The fire cap seat is provided with an inner ring gas mixing chamber and an outer ring gas mixing chamber. The burner base is connected with two air inlet pipe bodies corresponding to the inner ring gas mixing chamber and the outer ring gas mixing chamber respectively. The two air inlet pipe bodies respectively input gas to the inner ring gas mixing chamber and the outer ring gas mixing chamber to form the inner ring fire and the outer ring fire after ignition.

[0003] However, the current various types of burners are only divided into inner ring fire and outer ring fire, and the inner ring fire surface is not large enough, the combustion efficiency is not high enough, and the demand for larger fire supply cannot be met. Therefore, how to design a combustor that can increase the fire surface, improve the combustion efficiency, and realize larger fire supply is the technical problem to be solved by the utility model. CONTENT OF THE UTILITY MODEL

[0004] The main purpose of the utility model is to provide a novel combustor structure with increased fire surface, which aims to increase the central fire surface, improve the combustion efficiency, and withstand higher load.

[0005] The utility model provides a novel combustor structure, which comprises an outer cavity air inlet seat for connecting gas and air, an air inlet main body connected with the outer cavity air inlet seat, and a fire outlet assembly installed on the air inlet main body. The air inlet main body comprises an outer ring air inlet cavity, an inner ring air inlet cavity, and a central air inlet cavity arranged in sequence from outside to inside. The outer cavity air inlet seat is connected and fixed to the side surface of the air inlet main body. The outer cavity air inlet seat comprises an outer ring air inlet pipe body and an inner ring air inlet pipe body. The outer ring air inlet pipe body is in communication with the outer ring air inlet cavity, and the inner ring air inlet pipe body is in communication with the inner ring air inlet cavity.

[0006] The center gas inlet assembly is connected and fixed at the bottom of the gas inlet body and communicates with the center gas inlet cavity.

[0007] The fire outlet assembly includes a center fire outlet hole communicating with the center gas inlet cavity, an inner ring fire outlet hole communicating with the inner ring gas inlet cavity, and an outer ring fire outlet hole communicating with the outer ring gas inlet cavity.

[0008] The outer ring gas inlet cavity communicates with the outer ring fire outlet part to realize outer ring fire outlet; the inner ring gas inlet cavity communicates with the inner ring fire outlet part to realize inner ring fire outlet; the center gas inlet cavity communicates with the center fire outlet part to realize center fire outlet; the overall design of outer ring fire outlet, inner ring fire outlet, and center fire outlet is formed; the prior art only includes an outer ring fire outlet part and an inner ring fire outlet part to realize outer and inner fire outlets, and the center fire outlet surface is insufficient, the combustion is insufficient, and the firepower is insufficient; compared with the prior art, the center fire outlet is increased, the fire outlet surface is increased, the gas combustion efficiency is improved, the burner can bear higher load, and greater firepower is achieved.

[0009] Preferably, the fire outlet assembly includes a center fire outlet cover and an outer ring fire outlet cover, the center fire outlet cover includes a center fire outlet part and an inner ring fire outlet part surrounding the periphery of the center fire outlet part and integrally formed with the center fire outlet part, the center fire outlet hole is arranged on the upper end surface of the center fire outlet part, the inner ring fire outlet hole surrounds the side surface of the inner ring fire outlet part, and the outer ring fire outlet hole is arranged on the outer ring fire outlet cover. The fire outlet holes of the center fire outlet cover are respectively located on the upper end surface of the center fire outlet part and the side surface of the inner ring fire outlet part surrounding the periphery of the center fire outlet part, center fire outlet and inner ring fire outlet are realized at the same time, and do not affect each other, the center fire outlet part and the inner ring fire outlet part are integrally formed, and installation is convenient.

[0010] Preferably, the center gas inlet cavity includes a vertically arranged trumpet-shaped booster cavity with a larger lower end diameter than an upper end diameter, and a center gas inlet port communicating with the lower end of the booster cavity. The center gas inlet port is a trumpet-shaped structure with a larger lower end diameter. The diameters of the upper end and the lower end of the center gas inlet cavity are larger than the diameter of the middle section, and the lower end diameter is the largest. The upper and lower parts are trumpet-shaped. The gas forms a booster in the center gas inlet cavity, improves the efficiency of gas outflow and inflow, provides more stable and sufficient gas, ensures the combustion efficiency of the fire outlet part, and achieves the effect of enhancing firepower.

[0011] Preferably, the center gas inlet assembly includes a center gas inlet part, the gas outlet end of the center gas inlet part is connected with a nozzle, the nozzle is inserted into the center gas inlet port, and a gap is left between the outer wall of the nozzle and the inner wall of the center gas inlet port for air to enter the center gas inlet cavity. The gas sprayed by the nozzle and the air entering from the gap are fully mixed in the center gas inlet port to provide mixed gas for the center fire outlet part.

[0012] Preferably, the bottom of the air inlet body is provided with a connecting column, the two sides of the central air inlet component are provided with connecting supports, the connecting column is provided with a threaded hole, the connecting supports are provided with connecting holes opposite to the threaded hole, and screws are screwed into the threaded hole from the connecting holes to lock, so that the central air inlet component is connected and fixed on the air inlet body.

[0013] Preferably, the inner ring fire outlet part comprises an inner ring fire outlet surface inclined outward from top to bottom, and a sheltered eave located above the inner ring fire outlet surface, and the inner ring fire outlet hole is arranged on the inner ring fire outlet surface, and the inner ring fire outlet hole and the outer ring fire outlet hole are both inclined straight holes with low inner end and high outer end. The sheltered eave extends out of the inner ring fire outlet hole to prevent external foreign matters from falling into and blocking the inner ring fire outlet hole, and the inclined design of the fire outlet hole with high outer end and low inner end conforms to the air outlet direction and is beneficial to smooth air outlet.

[0014] Preferably, the central fire outlet part comprises a circular table structure protruding from the front end of the central fire outlet cover and a central connector extending downward from the lower end of the circular table structure for plugging with the upper end air outlet of the central air inlet cavity, the central fire outlet part is plugged and installed with the upper end of the central air inlet cavity, installation is convenient and easy to operate; and the circular table structure is higher than the upper end surface of the inner ring fire outlet part.

[0015] Preferably, the air inlet body comprises a central surrounding wall, an inner ring surrounding wall and an outer ring surrounding wall which are sequentially arranged from inside to outside and have heights of upper ends decreasing in sequence, the central air inlet cavity is formed by the central surrounding wall, the inner ring air inlet cavity is a spacing space between the inner ring surrounding wall and the central surrounding wall, and the outer ring air inlet cavity is a spacing space between the outer ring surrounding wall and the inner ring surrounding wall; the outer ring fire outlet cover comprises a base and an upper cover arranged on the base, the base is provided with a first connecting port, the inner wall of the first connecting port is provided with a first lap joint ring, and the base is arranged on the outer ring surrounding wall through the first lap joint ring; the upper cover is provided with a second connecting port, the inner wall of the second connecting port is provided with a second lap joint ring, and the upper cover is arranged on the inner ring surrounding wall through the second lap joint ring; the base and the upper cover form a ventilation cavity, and the inner wall of the first connecting port and the outer wall of the second connecting port are spaced apart to form a first communication port for communication between the ventilation cavity and the outer ring air inlet cavity.

[0016] Preferably, the outer wall of the inner ring fire outlet part is provided with a third connecting port at the lower end, the inner wall of the third connecting port is provided with a third lap joint ring, the upper cover is provided with a supporting ring matched with the inner wall of the third connecting port, and the third lap joint ring is arranged on the supporting ring; the central connector and the inner wall of the third connecting port are spaced apart to form a second communication port for communication between the inner cavity of the inner ring fire outlet part and the inner ring air inlet cavity.

[0017] Preferably, the air inlet main body side is provided with a support frame and a accessory mounting frame above the support frame, the support frame is provided with a connecting hole, and the accessory mounting frame is provided with an accessory mounting hole for mounting an accessory; the accessory mounting frame is located below the fire outlet assembly, and the fire outlet assembly is provided with a through slot opposite to the accessory mounting hole and an accessory positioning clamp.

[0018] Compared with the prior art, the novel burner structure has the following beneficial effects:

[0019] The novel burner structure comprises an outer cavity air inlet seat, an air inlet main body, a fire outlet assembly and a center air inlet assembly.

[0020] The outer cavity air inlet seat is connected and fixed to the side of the air inlet main body, and the center air inlet assembly is fixed to the bottom of the air inlet main body. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the novel burner structure in the embodiment of the utility model.

[0022] Figure 2 It is a structural schematic view of the novel burner structure in the embodiment of the utility model.

[0023] Figure 3 It is a structural cross-sectional schematic view of the novel burner structure in the embodiment of the utility model.

[0024] Figure 4Structure schematic diagram of the center fire cover of the novel burner structure in the embodiment of the utility model Figure 1 .

[0025] Figure 5 Structure schematic diagram of the center fire cover of the novel burner structure in the embodiment of the utility model Figure 2 .

[0026] Figure 6 Structure exploded schematic diagram of the outer ring fire cover of the novel burner structure in the embodiment of the utility model Figure 1 .

[0027] Figure 7 Structure exploded schematic diagram of the outer ring fire cover of the novel burner structure in the embodiment of the utility model Figure 2 .

[0028] Figure 8 Structure schematic diagram of the air inlet main body of the novel burner structure in the embodiment of the utility model Figure 1 .

[0029] Figure 9 Structure schematic diagram of the air inlet main body of the novel burner structure in the embodiment of the utility model Figure 2 .

[0030] Figure 10 The top view of the novel burner structure in the embodiment of the utility model.

[0031] The utility model realizes the purpose, functional characteristics and advantages, which will be further explained in combination with embodiments and with reference to the drawings. DETAILED DESCRIPTION

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the description and the drawings are to be regarded as illustrative in nature and are not intended to be limiting of the application; the terminology used in the description and the claims of the application and the above description of the drawings includes the terms specifically mentioned above, as well as their derivatives.

[0033] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that in various places in the specification are not necessarily all referring to the same embodiment, nor are the referred to embodiments necessarily alternatives or mutually exclusive embodiments. As will be apparent to those of ordinary skill in the art upon reading this description, the embodiments described herein can be combinable with other embodiments.

[0034] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, and the drawings will be combined below Figures 1-9 The technical solutions in the embodiments of the present application are clearly and completely described.

[0035] The utility model embodiment provides a kind of novel combustor structure, including the outer cavity gas inlet seat 10 for accessing gas and air, for being connected with outer cavity gas inlet seat gas inlet main body 20, for being installed on gas inlet main body fire assembly 30, for being installed on the center gas inlet assembly of gas inlet main body 20 bottom.The outer cavity gas inlet seat 10 includes outer ring gas inlet pipe body 11 and inner ring gas inlet pipe body 12, gas inlet main body 20 includes the outer ring enclosing wall 21, inner ring enclosing wall 22, center enclosing wall 23 that are sequentially arranged from outside to inside, outer ring enclosing wall 21 and inner ring enclosing wall 22 between form outer ring gas inlet cavity 24, inner ring enclosing wall 22 and center enclosing wall 23 between form inner ring gas inlet cavity 25, center enclosing wall is formed center gas inlet cavity 26, fire assembly 30 includes center fire cover 31 and outer ring fire cover 32.

[0036] Center gas inlet assembly includes center gas inlet component 41, and through passage is provided in center gas inlet component 41, one end of center gas inlet component 41 is gas inlet end 40, and the other end is provided with the gas outlet end 42 that sets up upwards.Gas inlet end of center gas inlet component 41 connects external gas, and gas outlet end 42 of center gas inlet component 41 is connected with nozzle, and nozzle extends into the inside of lower end of center gas inlet cavity 26, to be communicated with center gas inlet cavity 26 in this way.The gap for the air entering center gas inlet cavity 26 is left between the outer wall of nozzle and the inner wall of center gas inlet cavity 26, and the gas sprayed by nozzle and the air entering are fully mixed in the inside of center gas inlet cavity.

[0037] Gas inlet main body 20 side is equipped with gas inlet seat connecting structure, and gas inlet seat connecting structure includes outer ring gas inlet interface 241 being communicated with outer ring gas inlet cavity 24, inner ring gas inlet interface 242 being communicated with inner ring gas inlet cavity 25 and the first connecting lug 210 being equipped with first threaded connecting hole.The end of outer cavity gas inlet seat 10 is equipped with outer ring gas inlet connector 111 being communicated with outer ring gas inlet pipe body 11, inner ring gas inlet connector 121 being communicated with inner ring gas inlet pipe body 12 and the second connecting lug 122 being equipped with first connecting hole.The first connecting hole is opposite with first threaded connecting hole and is fixed by screw locking.

[0038] The outer ring air inlet joint 111 is connected into the outer ring air inlet interface 241, the outer ring air inlet pipe body 11 is communicated with the outer ring air inlet cavity 24, and the outer ring air inlet cavity 24 is separately supplied with air; the inner ring air inlet joint 121 is connected into the inner ring air inlet interface 242, the inner ring air inlet pipe body 12 is communicated with the inner ring air inlet cavity 25 in the inner ring air inlet cavity 25, and the inner ring air inlet cavity 25 is separately supplied with air. The air outlet end 42 of the center air inlet part 41 is connected with a nozzle, the nozzle extends into the center air inlet cavity 26, and the center air inlet cavity 26 is communicated, so that the center air inlet cavity 26 is separately supplied with air. The outer ring air inlet cavity 24, the inner ring air inlet cavity 25 and the center air inlet cavity 26 are independently supplied with air, the stability of air supply is increased, and the demand of combustion is fully met.

[0039] The center fire outlet cover 31 comprises a center fire outlet part 33 and an inner ring fire outlet part 34 which is arranged around the center fire outlet part 33 and is integrally formed with the center fire outlet part 33. The center fire outlet part 33 comprises a circular table structure 35 protruding at the front end of the center fire outlet cover 31 and a center joint 36 extending downward from the lower end of the circular table structure 35 and used for plugging with the upper end air outlet of the center air inlet cavity 26. The center fire outlet part 33 and the inner ring fire outlet part 34 are integrally formed, and the center fire outlet part 33 is pluggingly installed with the center air inlet cavity 26 through the center joint 36. The center fire outlet hole 312 is arranged on the upper end surface of the circular table structure 35, and the inner ring fire outlet part 34 is provided with an inner ring fire outlet hole 310 on the side surface. The center fire outlet part 33 is arranged separately from the peripheral inner ring fire outlet part 34, and independently fires, thereby solving the problem of insufficient fire outlet surface and insufficient central firepower caused by the lack of center fire in the prior art. The integrally formed design and pluggingly installed design are convenient and fast to install.

[0040] The inner ring fire outlet part 34 is provided with an inner ring fire outlet surface 37 and a sheltered eave 38 located above the inner ring fire outlet surface. The inner ring fire outlet surface 37 is located on the side surface of the inner ring fire outlet part 34 and is arranged to be inclined outward from top to bottom. The inner ring fire outlet hole 310 is arranged on the inner ring fire outlet surface 37. The sheltered eave 38 is arranged above the inner ring fire outlet hole 310 to prevent foreign matters from falling into and blocking the inner ring fire outlet hole 310. The inner ring fire outlet hole 310 and the outer ring fire outlet hole 311 are both inclined straight holes with the inner port lower and the outer port higher. The inclined design of the outer port higher and the inner port lower conforms to the air outlet direction, is beneficial to smooth air outlet, and is also beneficial to the foreign matters falling into the holes to slide out along the inclined direction.

[0041] The outer ring fire outlet cover 32 comprises a base 321 and an upper cover 322 arranged on the base. The base 321 is provided with a first connecting port 3211, and the inner wall of the first connecting port 3211 is provided with a first lap joint ring 3212. The base 321 is arranged on the outer ring surrounding wall 21 through the first lap joint ring 3212. The upper cover 322 is provided with a second connecting port 3221, and the inner wall of the second connecting port 3221 is provided with a second lap joint ring 3222. The base 321 and the upper cover 322 are connected and fixed to form an air passage cavity 301. The inner wall of the first connecting port 3211 and the outer wall of the second connecting port 3221 are separated to form a first communication port 323 for the air passage cavity 301 to communicate with the outer ring gas inlet cavity 24. The once-mixed gas and air are introduced into the air passage cavity 301 through the outer ring gas inlet pipe body 11, and are sprayed out to burn through the outer ring fire hole 311 on the upper cover 322 to form the outer ring fire. The air passage hole 302 is further arranged on the upper cover 322 to input air into the air passage cavity 301. Since the outer ring gas inlet cavity 24 is separately supplied with gas, the gas amount is sufficient and stable, so that the outer ring fire burns fully and the firepower is continuous.

[0042] The outer wall of the inner ring fire outlet part 34 is provided with a third connecting port 341 at the lower end, and the inner wall of the third connecting port 341 is provided with a third lap joint ring 3411. The upper cover 39 is provided with a supporting ring abutting against the inner wall of the third connecting port 341. The center joint 36 is separated from the inner wall of the third connecting port 341 to form a second communication port for the inner cavity of the inner ring fire outlet part 34 to communicate with the inner ring gas inlet cavity 25. The once-mixed gas and air are introduced into the inner cavity of the inner ring fire outlet part 34 through the inner ring gas inlet pipe body 12, and are sprayed out to burn through the inner ring fire hole 310 to form the inner ring fire. Since the inner ring gas inlet cavity 25 is separately supplied with gas, the gas amount is sufficient and stable, so that the outer ring fire burns fully and the firepower is continuous.

[0043] The center gas inlet cavity 26 comprises a vertically arranged horn-shaped booster cavity body 261 with a larger lower end port diameter than an upper end port diameter, and a center gas inlet port 201 communicated with the lower end of the booster cavity body 261. The center gas inlet port 201 is a horn-shaped structure with a larger lower end port diameter. The nozzle extends into the center gas inlet port 201 to communicate with the center gas inlet cavity 26. A gap is left between the outer wall of the nozzle and the inner wall of the center gas inlet port 201 for air to enter. The gas sprayed out of the nozzle is fully mixed with the entering air inside the center gas inlet cavity 26, and is sprayed out to burn through the center fire hole 311 on the center gas inlet cavity 26 to form the center fire. Since the center gas inlet cavity 26 is separately supplied with gas, the inner cavity has a booster effect, and cooperates with the inner ring fire to obtain greater firepower.

[0044] The bottom of the air inlet main body 20 is provided with a connecting column 27, the two sides of the central air inlet component 41 are provided with connecting supports 43, the connecting column 27 is provided with a threaded hole, the connecting supports 43 are provided with connecting holes 44 opposite to the threaded hole, and the connecting holes 44 are locked into the threaded hole by screws, so that the central air inlet component 41 is connected and fixed on the air inlet main body 20. The connecting supports 43 are supporting steps, the upper end surface of the supporting step is consistent with the lower end surface of the connecting column 27 in height during installation, the screw passes through the connecting hole 44 into the threaded hole and is locked, and installation is convenient.

[0045] The side surface of the air inlet main body 20 is provided with a supporting frame 28 and a fitting mounting frame 29 located above the supporting frame 28, the supporting frame 28 is provided with connecting hole positions 281 for installing screws. The fitting mounting frame 29 is provided with fitting mounting hole positions 291 for installing fittings (such as ignition needles and induction needles), the fitting mounting frame 29 is located below the outer ring fire cover, the outer ring fire cover is provided with a through groove 305 opposite to the fitting mounting hole positions 291 and a fitting positioning clamp 306. The fitting penetrates the barrel groove 305, the lower end is vertically installed in the fitting mounting hole positions 291, and is positioned in the fitting positioning clamp 306.

[0046] The above embodiments are only used to illustrate the technical solutions of the present application, and do not limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add or delete the features in the embodiments of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope of the present application.

Claims

1. A novel burner structure comprising an outer cavity air inlet seat for accessing gas and air, an air inlet body connected to the outer cavity air inlet seat, a fire outlet assembly mounted on the air inlet body, characterized in that, The air inlet main body comprises an outer ring air inlet cavity, an inner ring air inlet cavity and a center air inlet cavity arranged in turn from outside to inside, the outer cavity air inlet seat is connected and fixed on the side of the air inlet main body, the outer cavity air inlet seat comprises an outer ring air inlet pipe body and an inner ring air inlet pipe body, the outer ring air inlet pipe body is communicated with the outer ring air inlet cavity, and the inner ring air inlet pipe body is communicated with the inner ring air inlet cavity; A center air inlet assembly for external connection of gas is further included, the center air inlet assembly is connected and fixed on the bottom of the air inlet main body, and the center air inlet assembly is communicated with the center air inlet cavity; The fire outlet assembly comprises a center fire outlet hole communicated with the center air inlet cavity, an inner ring fire outlet hole communicated with the inner ring air inlet cavity and an outer ring fire outlet hole communicated with the outer ring air inlet cavity.

2. The novel burner structure according to claim 1, characterized in that, The fire outlet assembly comprises a center fire outlet cover and an outer ring fire outlet cover, the center fire outlet cover comprises a center fire outlet part and an inner ring fire outlet part surrounding the periphery of the center fire outlet part and integrally formed with the center fire outlet part, the center fire outlet hole is arranged on the upper end face of the center fire outlet part, the inner ring fire outlet hole surrounds the side face of the inner ring fire outlet part, and the outer ring fire outlet hole is arranged on the outer ring fire outlet cover.

3. The novel burner structure according to claim 2, characterized in that The center air inlet cavity comprises a vertically arranged trumpet-shaped booster cavity with a larger lower end diameter than an upper end diameter and a center air inlet port communicated with the lower end of the booster cavity, and the center air inlet port is a trumpet-shaped structure with a larger lower end diameter.

4. The novel burner structure according to claim 3, characterized in that The center air inlet assembly comprises a center air inlet component, a nozzle is connected to the air outlet end of the center air inlet component, the nozzle is inserted into the center air inlet port, and a gap is left between the outer wall of the nozzle and the inner wall of the center air inlet port for air to enter the center air inlet cavity.

5. The novel burner structure according to claim 4, characterized in that The bottom of the air inlet main body is provided with a connecting column, the two sides of the center air inlet component are provided with connecting supports, the connecting column is provided with a threaded hole, the connecting supports are provided with connecting holes opposite to the threaded hole, and screws are screwed into the threaded hole from the connecting holes to be locked, so that the center air inlet component is connected and fixed on the air inlet main body.

6. A novel burner structure according to any one of claims 2 to 5, characterized in that The inner ring fire outlet part comprises an inner ring fire outlet surface inclined outward from top to bottom, and a sheltered eave located above the inner ring fire outlet surface, the inner ring fire outlet hole is arranged on the inner ring fire outlet surface, and the inner ring fire outlet hole and the outer ring fire outlet hole are both inclined straight holes with low inner ends and high outer ends.

7. A novel burner structure according to any one of claims 2 to 5, characterized in that The center fire outlet part comprises a circular truncated cone structure protruding from the front end of the center fire outlet cover and a center connector extending downward from the lower end of the circular truncated cone structure for plug connection with the upper end air outlet port of the center air inlet cavity, and the circular truncated cone structure is higher than the upper end face of the inner ring fire outlet part.

8. The novel burner structure according to claim 7, characterized in that The air inlet main body comprises a center wall, an inner ring wall and an outer ring wall which are sequentially arranged from inside to outside and have heights of upper ends sequentially decreasing, the center air inlet cavity is formed by the center wall, the inner ring air inlet cavity is a space between the inner ring wall and the center wall, and the outer ring air inlet cavity is a space between the outer ring wall and the inner ring wall; the outer ring fire outlet cover comprises a base and an upper cover arranged on the base, the base is provided with a first connecting port, an inner wall of the first connecting port is provided with a first lap joint ring, and the base is arranged on the outer ring wall through the first lap joint ring; the upper cover is provided with a second connecting port, an inner wall of the second connecting port is provided with a second lap joint ring, and the upper cover is arranged on the inner ring wall through the second lap joint ring; the base and the upper cover form an air passage, and a first communication port for communication between the air passage and the outer ring air inlet cavity is formed between the inner wall of the first connecting port and the outer wall of the second connecting port.

9. The novel burner structure according to claim 8, characterized in that An outer wall of the inner ring fire outlet part is provided with a third connecting port at a lower end, an inner wall of the third connecting port is provided with a third lap joint ring, the upper cover is provided with a supporting ring matched with the inner wall of the third connecting port, and the third lap joint ring is arranged on the supporting ring; the center joint is spaced apart from the inner wall of the third connecting port to form a second communication port for communication between an inner cavity of the inner ring fire outlet part and the inner ring air inlet cavity.

10. The novel burner structure according to any one of claims 1-5, characterized in that, The air inlet main body is provided with a support frame and a fitting mounting frame located above the support frame, the support frame is provided with a connecting hole, and the fitting mounting frame is provided with a fitting mounting hole for mounting a fitting; the fitting mounting frame is located below the fire outlet assembly, and the fire outlet assembly is provided with a through slot opposite to the fitting mounting hole and a fitting positioning clamp.

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