CN214384389U - Furnace end, combustor and gas-cooker - Google Patents

Abstract

The utility model discloses a furnace end, combustor and gas-cooker relates to combustor technical field, and this furnace end includes: an outer ring injection pipe; an inner ring injection pipe; the outer ring seat is internally provided with an outer ring distribution air passage communicated with the outer ring injection pipe; the inner ring seat is sleeved in the outer ring seat and internally provided with an inner ring distribution air passage communicated with the inner ring injection pipe; and the middle ring seat is sleeved between the outer ring seat and the inner ring seat, a middle ring distribution air passage is arranged in the middle ring seat, and the middle ring distribution air passage is communicated with the outer ring distribution air passage. The outer ring of well zhong huan ji liang is equipped with between the periphery wall and the outer ring seat internal perisporium and is linked the air vent, and the outer ring of well is linked the air vent and is penetrated the pipe and can all be the straight tube form and outwards extend along same radial, and the outer ring of well outer ring is linked the air vent and is penetrated the outer loop that the pipe was penetrated to the outer ring injection pipe air outlet just to the intercommunication passageway air inlet of air vent and the area that the intercommunication passageway air inlet was less than the area that the outer ring penetrated the pipe air outlet. The utility model discloses a furnace end, combustor and gas-cooker's simple structure, combustion efficiency height and manufacturing cost are lower.

Description

Furnace end, combustor and gas-cooker

Technical Field

The utility model relates to a combustor technical field specifically, relates to a furnace end, combustor and gas-cooker.

Background

With the ever-increasing standard of living, people are constantly pursuing higher quality food quality and cooking experience. Although the traditional burner is low in manufacturing cost, the performance of heat load and heat efficiency is moderate, and the expected food cooking effect and cooking experience cannot be achieved. In order to improve the performance of heat load and heat efficiency, the existing burner is generally provided with three independent injection pipes and nozzles for corresponding gas supply so as to form three-ring flame, but the manufacturing cost of the burner is higher, and the burner is not beneficial to popularization.

Disclosure of Invention

The utility model aims at providing a novel furnace end, combustor and gas-cooker, this furnace end, combustor and gas-cooker's simple structure, combustion efficiency height and manufacturing cost are lower.

In order to achieve the above object, the utility model provides a furnace end, this furnace end includes:

an outer ring injection pipe;

an inner ring injection pipe;

the outer ring seat is internally provided with an outer ring distribution air passage communicated with the outer ring injection pipe;

the inner ring seat is sleeved in the outer ring seat and internally provided with an inner ring distribution air passage communicated with the inner ring injection pipe; and

and the middle ring seat is sleeved between the outer ring seat and the inner ring seat, a middle ring distribution air passage is arranged in the middle ring seat, and the middle ring distribution air passage is communicated with the outer ring distribution air passage.

In some embodiments, the middle ring seat may include a middle ring seat inner peripheral wall defining the middle ring distribution air passage and a middle ring seat outer peripheral wall, the outer ring seat includes an outer ring seat inner peripheral wall defining the outer ring distribution air passage and an outer ring seat outer peripheral wall, and the middle ring connecting air passage extends in a radial direction and is connected between the middle ring seat outer peripheral wall and the outer ring seat inner peripheral wall.

In some embodiments, the outer ring of the outer ring ejector pipe is connected with the outer circumferential wall of the outer ring seat, the outer ring connecting air duct and the outer ring ejector pipe can be straight and extend outwards along the same radial direction, the outer ring connecting air duct is positioned on the inner circumferential wall of the outer ring seat, the air inlet of the communication channel is opposite to the air outlet of the outer ring ejector pipe, and the area of the air inlet of the communication channel is smaller than that of the air outlet of the outer ring ejector pipe.

In some embodiments, a connecting top wall may be disposed between the top end peripheral edge of the outer peripheral wall of the middle ring seat and the top end peripheral edge of the inner peripheral wall of the outer ring seat, and the connecting top wall is provided with a top wall vent hole penetrating axially.

In some embodiments, the inner ring seat may include an inner ring seat inner peripheral wall defining an inner ring distribution air passage and an inner ring seat outer peripheral wall, the middle ring seat includes a middle ring seat inner peripheral wall defining a middle ring distribution air passage and a middle ring seat outer peripheral wall, and the inner ring seat outer peripheral wall and the middle ring seat inner peripheral wall are formed as a common middle inner ring common peripheral wall.

In some embodiments, the inner peripheral wall of the inner ring seat may be circumferentially formed with a central vent opening extending axially therethrough.

In some embodiments, the inner annular ejector tube may be straight.

In some embodiments, the outer and inner annular ejector tubes may extend radially and be circumferentially spaced apart.

In some embodiments, the inner annular ejector tube may be located outside the outer peripheral wall of the outer annular seat by a tube length of not more than 15 cm.

Correspondingly, this application still provides a combustor, and this combustor includes foretell furnace end.

In addition, the application also provides a gas stove which is characterized by comprising the burner.

The utility model discloses a furnace end includes that inner ring seat, well ring seat, outer loop seat, inner ring draw and penetrate pipe and outer loop and draw and penetrate the pipe, and inner ring seat, zhonghuan seat and outer loop seat correspond respectively and are equipped with inner ring distribution air flue, zhonghuan distribution air flue and outer loop distribution air flue, and three distribution air flue can correspondingly form three ring flame, is favorable to improving the heat load of furnace end and combustor and makes flame disperse more evenly on whole fire plane. The inner ring injection pipe is communicated with the inner ring distribution air passage, and the outer ring injection pipe, the outer ring distribution air passage and the middle ring distribution air passage are sequentially communicated, so that primary mixed gas of the outer ring distribution air passage can be introduced into the middle ring distribution air passage relatively close to the central combustion area, and the integral combustion efficiency of the combustor is favorably improved; and only need two to draw and penetrate the pipe and can supply air for three distribution air flue in order to form the three ring fire, not only can make the structure and the control of furnace end simpler, can also reduce the production part and save manufacturing cost.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a furnace end according to an embodiment of the present invention;

fig. 2 is a schematic structural view of another view of the burner of fig. 1;

fig. 3 and 4 are partial sectional views of fig. 1 at different positions, respectively.

Description of the reference numerals

200 furnace end

201 inner ring seat 2011 inner ring distribution airway

2012 inner ring seat inner peripheral wall 2013 inner ring seat outer peripheral wall

2015 inner ring seat bottom wall 202 middle ring seat

2021 middle ring distributing air duct 2022 middle ring seat bottom wall

2023 middle ring seat peripheral wall 203 outer ring seat

2031 outer ring distribution air duct 2032 inner peripheral wall of outer ring seat

2033 outer annular seat peripheral wall 2034 outer annular seat bottom wall

204 inner ring ejector pipe 205 outer ring ejector pipe

2051 outer ring of the air outlet 206 of the outer ring injection pipe is connected with an air duct

2061 communicating passage inlet 207 connecting the top wall

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The furnace head 200, the burner and the gas range according to the present invention will be described with reference to the accompanying drawings.

The existing burner is generally provided with three-ring flames in order to improve the heat load and the heat efficiency, so that three independent injection pipes and nozzles are arranged on the burner head to supply air correspondingly, the existing burner with three-ring flames and the burner head need more manufacturing parts, production processes are increased, later maintenance is not facilitated, and the production cost is higher. In view of this, the inventor of this application has provided a novel furnace end 200 and combustor through continuous research and thinking, and this furnace end 200 and combustor not only simple structure, manufacturing cost are lower and be convenient for the maintenance in later stage, can also provide the tricyclic flame, and heat load and combustion efficiency's performance are good, and user experience is good.

The utility model provides a furnace end 200 draws and penetrates pipe 205, inner ring and draws pipe 204, outer ring seat 203, well ring seat 202 and inner ring seat 201 including outer ring, and inner ring seat 201 suit is in outer ring seat 203, and well ring seat 202 suit is between outer ring seat 203 and inner ring seat 201, well ring seat 202 and outer ring seat 203 correspond respectively and are equipped with inner ring distribution air flue 2011, well ring distribution air flue 2021 and outer ring distribution air flue 2031. The three distribution air passages can correspondingly form three-ring flame, which is beneficial to improving the heat load of the furnace end and the combustor and enables the flame to be more uniformly dispersed on the whole fire plane. Here, a position relatively close to the center of the burner 200 is defined as "inner", and a position relatively far from the center of the burner 200 is defined as "outer".

The inner ring ejector pipe 204 is communicated with the inner ring distribution air passage 2011 to provide primary mixed gas for the inner ring distribution air passage 2011, the middle ring distribution air passage 2021 is communicated with the outer ring distribution air passage 2031, and the outer ring ejector pipe 205 is communicated with the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 in sequence to provide primary mixed gas for the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 in sequence. Because the flame burns closer to the central area of the burner, the higher the thermal efficiency, the burner 200 of the present application introduces the primary mixed gas of the outer ring distribution gas passage 2031 into the middle ring distribution gas passage 2021 relatively close to the central combustion area, which is beneficial to improving the overall combustion efficiency of the burner. And, the furnace end 200 of this application only need two to draw and penetrate the pipe can form three ring fire for three distribution air flue air feed, not only can make furnace end 200's structure simpler, can also reduce the quantity that sets up of drawing production parts such as pipe and nozzle, has saved manufacturing cost greatly and the maintenance in the later stage of being more convenient for. In addition, furnace end 200 of this application only need two to draw and penetrate the pipe and can give three distribution air flue air feed, and valve regulation and control strategy and control logic also can be simpler.

Specifically, as shown in fig. 1 and fig. 2, the outer ring seat 203, the middle ring seat 202, and the inner ring seat 201 are respectively annular and are sequentially nested from outside to inside, and correspondingly, the outer ring distribution air passage 2031, the middle ring distribution air passage 2021, and the inner ring distribution air passage 2011 are also sequentially nested from outside to inside. The distance between the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 is smaller than the distance between the middle ring distribution air passage 2021 and the outer ring distribution air passage 2031, the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 are adjacently arranged to be as close to the inner ring distribution air passage 2011 in the center as possible, so that the flame of the middle ring distribution air passage 2021 is combusted closer to the center region, and the thermal efficiency is higher.

In addition, well ring distribution air flue 2021 and outer loop distribution air flue 2031 intercommunication, when the user need carry out big fire culinary art, often expect that the firepower is better more and can guarantee even fire nature when providing big firepower, the inner ring draws and penetrates pipe 204 and outer loop and draws the corresponding air feed for three distribution air flue of pipe 205, inner ring distribution air flue 2011, well ring distribution air flue 2021 and outer loop distribution air flue 2031 correspond and can form three ring flame, guaranteed that furnace end 200 has enough high thermal load to carry out big fire culinary art, and the even fire nature and the thermal efficiency of three ring flame heating are better. When a user needs to cook with small fire, the fire is often expected to be as small as possible, at the moment, the outer ring injection pipe 205 does not supply air to the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021, namely, the flame corresponding to the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 is extinguished, and only the inner ring injection pipe 204 supplies air to the inner ring distribution air passage 2011, so that only the inner ring distribution air passage 2011 can form inner ring flame, and the small fire cooking is realized. And, because the setting of well ring distribution air flue 2021 is pressed close to inner ring distribution air flue 2011, has guaranteed high thermal load and the even fire nature requirement in the inner ring burning zone when big fire cooks, so the inner ring gas nozzle of inner ring distribution air flue 2011 air feed can do for a short time as far as possible to can provide littleer firepower when the small fire cooks, satisfy the demand of the little fire culinary art of user's littleer firepower, user experience is better.

Alternatively, the outer ring seat 203 may include an outer ring seat inner peripheral wall 2032, an outer ring seat outer peripheral wall 2033, and an outer ring seat bottom wall 2034 that define an outer ring distribution airway 2031, the middle ring seat 202 may include a middle ring seat inner peripheral wall, a middle ring seat outer peripheral wall 2023, and a middle ring seat bottom wall 2022 that define a middle ring distribution airway, and the inner ring seat 201 may include an inner ring seat inner peripheral wall 2012, an inner ring seat outer peripheral wall 2013, and an inner ring seat bottom wall 2015 that define an inner ring distribution airway 2011. The top surfaces of the outer ring base bottom wall 2034, the middle ring base bottom wall 2022 and the inner ring base bottom wall 2015 are all formed into inclined ramp surfaces along the airflow direction, which is favorable for reducing the flow resistance of primary mixed gas, the gas outlet is smoother, and the stability of flame combustion is better. Wherein, the primary mixed gas is the mixed gas of fuel gas and primary air.

Further, as shown in fig. 1 and 2, the inner ring base outer peripheral wall 2013 and the middle ring base inner peripheral wall may be formed as a common middle inner ring common peripheral wall. Thus, the middle ring distribution air passage 2021 can be arranged closer to the inner ring distribution air passage 2011, the flame of the middle ring distribution air passage 2021 can be combusted closer to the central area, and the thermal efficiency is higher. And under the condition of ensuring the requirements of high heat load and uniform fire of the inner ring combustion area during big fire cooking, the inner ring gas nozzle can be made as small as possible, thereby providing smaller firepower during small fire cooking. In addition, the outer peripheral wall 2013 of the inner ring seat and the inner peripheral wall of the middle ring seat form a shared common peripheral wall of the middle ring, so that the wall body material of the furnace end can be reduced, the production cost of the furnace end is reduced, and the structure of the furnace end can be simpler and more compact.

Alternatively, the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 may be communicated by an intermediate communication passage, and the arrangement form and the arrangement position of the intermediate communication passage may be various, for example, the intermediate communication passage may be a curved passage and both ends of the intermediate communication passage are respectively connected to the outer ring base bottom wall 2034 and the middle ring base bottom wall 2022 to be correspondingly communicated with the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021; alternatively, the intermediate communication passage may be a curved passage, and both ends of the intermediate communication passage are respectively connected to the outer ring seat bottom wall 2034 and the intermediate ring seat outer peripheral wall 2023 to be correspondingly communicated with the outer ring distribution air passage 2031 and the intermediate ring distribution air passage 2021, and the like. Alternatively, as shown in fig. 2, the middle communication channel may be a middle and outer annular communication channel 206 extending in the radial direction and passing through between the outer peripheral wall 2023 of the middle annular seat and the inner peripheral wall 2032 of the outer annular seat, and the middle and outer annular communication channels 206 are straight channels, so that not only the structure of the burner 200 is simpler and more reasonable, but also the middle and outer annular communication channels 206 can be straight channels to shorten the channel length and reduce the flow resistance as much as possible. In addition, the middle and outer ring connecting air ducts 206 in fig. 2 are only shown in one, but the application is not limited thereto, and the middle and outer ring connecting air ducts 206 may also be multiple and arranged between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 at intervals in the circumferential direction.

Optionally, the outer ring ejection tube air outlet 2051 of the outer ring ejection tube 205 is fixed on the outer circumferential wall 2033 of the outer ring seat, and the middle and outer ring communication air passage 206 and the outer ring ejection tube 205 are both straight tubes and extend outward along the same radial direction, so that the middle and outer ring communication air passage 206 has the shortest passage length and smaller flow resistance. Moreover, the communication channel gas inlet 2061 of the middle and outer ring connecting gas passage 206 is arranged on the inner peripheral wall 2032 of the outer ring base, the communication channel gas inlet 2061 is over against the outer ring injection pipe gas outlet 2051, and the area of the communication channel gas inlet 2061 is smaller than that of the outer ring injection pipe gas outlet 2051, so that the flow resistance of the primary mixed gas is smaller, and the primary mixed gas is more smoothly guided to the middle ring distribution gas passage 2021 to ensure that the middle ring distribution gas passage 2021 has enough gas supply amount.

Because the central combustion area is provided with the inner ring distribution air passage 2011 and the middle ring distribution air passage 2021, the heat load of the central combustion area is greatly improved, more air needs to be supplemented to the central combustion area correspondingly, so that insufficient air supplement can be caused to deteriorate the combustion condition, and the heat efficiency is reduced and the smoke emission is not up to standard. Therefore, a channel for supplementing secondary air may be additionally provided to the burner 200.

Alternatively, a connecting top wall 207 may be provided between the top end peripheral edge of the middle ring base outer peripheral wall 2023 and the top end peripheral edge of the outer ring base inner peripheral wall 2032, and the connecting top wall 207 may be provided with a top wall vent (not shown) that axially penetrates therethrough. In this way, secondary air can be supplemented to the central combustion region axially and upwardly between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 through the top wall vent, so that the combustion of the central combustion region is more sufficient, the thermal efficiency is higher, and the emission of harmful gases can be reduced.

Optionally, the inner ring seat inner peripheral wall 2012 can encircle and be formed with the central blow vent (not shown in the figure) that the axial is link up, like this, accessible central blow vent upwards supplements the secondary air to central combustion area along the axial for central combustion area's burning is more abundant, and the emission of carbon monoxide is lower, and combustion efficiency is higher, and the gas is when the burning simultaneously, and central combustion area's air current is stable, thereby the burning is also stable, has solved the inner ring and has left flame flameout scheduling problem.

Further, the inner ring injection pipe 204 may be a straight pipe, so that the flow resistance and the flow pressure loss of the inner ring injection pipe 24 may be reduced, and the burner 200 may be used for small-fire cooking with small fire and stable combustion.

Further, the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may extend in the radial direction and be arranged at intervals in the circumferential direction. Due to the existence of the middle and outer ring communicating air passage 206, if the inner and outer injection pipes of the existing furnace end are parallel and parallel, the inner ring injection pipe 24, the middle and outer ring communicating air passage 206 or the outer ring injection pipe 25 are partially required to be bent, so that the flow resistance of primary mixed gas is increased. Therefore, as shown in fig. 1 and 2, the outer ring ejection pipe 205 and the inner ring ejection pipe 204 of the present application are circumferentially fixed on the outer ring base peripheral wall 2033 of the outer ring base 203 at intervals, so that the arrangement of the middle and outer ring communication air passage 206 can be more convenient, and the outer ring ejection pipe 205 and the inner ring ejection pipe 204 can be both arranged in a straight pipe shape extending along the radial direction, so as to reduce the flow resistance, further make the flame more stable, and make the small flame smaller when cooking with small flame. As shown in fig. 1 and fig. 2, the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may be arranged in a staggered manner at a right angle, but the present application is not limited thereto, and the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may be arranged in a staggered manner at an acute angle or an obtuse angle.

Optionally, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may not be longer than 15cm, which is beneficial to increase the sub-air injection coefficient of the inner ring injection pipe 204, improves the air intake amount, the mixing speed and the flow speed of the fuel gas and the air, reduces the intake pressure loss in a low-flame state, and ensures stable combustion in a low-flame condition. Further, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may be longer than 10cm, and further, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may be longer than 6cm and shorter than 10 cm.

Further, the flow path of the primary mixed gas in the outer ring injection pipe 205: the primary mixed gas of the outer ring injection pipe 205 enters the outer ring distribution airway 2031 from the outer ring injection pipe gas outlet 2051, and part of the primary mixed gas entering the outer ring distribution airway 2031 flows to the left and right channels of the outer ring distribution airway 2031 and supplies gas to the fire cover upwards; another part of the primary mixed gas entering the outer ring distribution gas passage 2031 flows to the middle ring distribution gas passage 2021 through the middle outer ring connecting gas passage 206 and supplies gas upwards to the fire lid. Flow path of primary mixed gas of the inner ring injection pipe 204: the primary mixed gas of the inner ring injection pipe 204 flows to the inner ring distribution air passage 2011 and supplies gas to the fire lid.

In addition, the furnace end 200 of this application is rational in infrastructure compact, and the volume is less, and it is little to occupy the kitchen space, is favorable to promoting to the little room user.

Correspondingly, the present application provides a burner comprising a burner 200 according to the above. The burner also includes a gas distribution plate and a fire cover on the burner 200. The specific structure of the burner 200 refers to the above embodiments, and since the gas burner of the present application adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In addition, the application also provides a gas stove, and the gas stove comprises the combustor. Similarly, the specific structure of the burner refers to the above embodiments, and since the gas stove of the present application adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

To sum up, the utility model provides a furnace end 200, combustor and gas-cooker, this furnace end 200, combustor and gas-cooker simple structure is reasonable, low in production cost, high thermal load and high thermal efficiency, and the stability of little fire burning is also good, and user experience is good.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (11)

1. A furnace end, characterized in that the furnace end comprises:

an outer ring injection pipe;

an inner ring injection pipe;

the outer ring seat is internally provided with an outer ring distribution air passage communicated with the outer ring injection pipe;

the inner ring seat is sleeved in the outer ring seat and internally provided with an inner ring distribution air passage communicated with the inner ring injection pipe; and

and the middle ring seat is sleeved between the outer ring seat and the inner ring seat, a middle ring distribution air passage is arranged in the middle ring seat, and the middle ring distribution air passage is communicated with the outer ring distribution air passage.

2. The burner of claim 1, wherein the middle ring seat includes a middle ring seat inner peripheral wall and a middle ring seat outer peripheral wall defining the middle ring distribution air passage, the outer ring seat includes an outer ring seat inner peripheral wall and an outer ring seat outer peripheral wall defining the outer ring distribution air passage, and the middle ring connecting air passage extends radially and is connected between the middle ring seat outer peripheral wall and the outer ring seat inner peripheral wall.

3. The furnace end according to claim 2, wherein an outer ring injection pipe air outlet of the outer ring injection pipe is connected to the outer circumferential wall of the outer ring seat, the middle outer ring connecting air duct and the outer ring injection pipe are both straight pipes and extend outwards along the same radial direction, a communication channel air inlet on the inner circumferential wall of the outer ring seat of the middle outer ring connecting air duct faces the outer ring injection pipe air outlet, and the area of the communication channel air inlet is smaller than that of the outer ring injection pipe air outlet.

4. The burner of claim 2, wherein a connecting top wall is provided between the top end peripheral edge of the outer peripheral wall of the middle ring seat and the top end peripheral edge of the inner peripheral wall of the outer ring seat, and the connecting top wall is provided with a top wall vent that axially penetrates through the connecting top wall.

5. The burner of claim 1, wherein the inner ring seat includes an inner ring seat inner peripheral wall and an inner ring seat outer peripheral wall that define the inner ring distribution air passage, the middle ring seat includes a middle ring seat inner peripheral wall and a middle ring seat outer peripheral wall that define the middle ring distribution air passage, the inner ring seat outer peripheral wall and the middle ring seat inner peripheral wall forming a common middle inner ring common peripheral wall.

6. The burner of claim 5, wherein the inner peripheral wall of the inner ring includes a central vent opening formed therethrough in a circumferential direction.

7. The burner of claim 1, wherein the inner annular injection tube is a straight tube.

8. The burner of any one of claims 1 to 7, wherein the outer and inner annular ejector tubes extend radially and are circumferentially spaced apart.

9. The burner of claim 8, wherein the inner ring injector tube is no longer than 15cm outside the outer peripheral wall of the outer ring seat.

10. A burner, characterized in that it comprises a burner according to any one of claims 1 to 9.

11. A gas burner characterized in that it comprises a burner according to claim 10.

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