CN216591706U - Gas mixing ring for upper air inlet burner and upper air inlet burner - Google Patents

Abstract

The utility model provides a gas mixing ring for an upper air inlet burner and the upper air inlet burner, which comprise an inner ring body, an outer ring body and a flow guide structure, wherein a secondary air channel is formed between the outer ring body and the inner ring body, an inner ring injection hole is arranged on the inner ring body, a first air inlet is arranged on the inner ring injection hole, an outer ring injection pipe is arranged on the outer ring body, a second air inlet is arranged on the outer ring injection pipe, the first air inlet and the second air inlet are isolated by the flow guide structure, and the second air inlet and the air inlet end of the secondary air channel are isolated by the flow guide structure. The air flow guide structure avoids the phenomenon of air robbery of primary air and secondary air at the second air inlet of the outer ring injection pipe; meanwhile, the phenomenon of air rush between primary air at the first air inlet of the inner-ring injection hole and primary air at the second air inlet of the outer-ring injection pipe is avoided, the injection effect is ensured, and the full combustion of fuel gas is facilitated.

Description

Gas mixing ring for upper air inlet burner and upper air inlet burner

Technical Field

The utility model relates to the technical field of burners, in particular to a gas mixing ring for an upper air inlet burner and the upper air inlet burner.

Background

The upper air inlet burner is generally composed of a base, an air mixing ring, a fire cover and the like. The base is provided with an inner ring nozzle and an outer ring nozzle, and the gas mixing ring is provided with an inner ring injection pipe and an outer ring injection pipe. The inner ring nozzle supplies air to the inner ring flame through the inner ring injection pipe, and the outer ring nozzle supplies air to the outer ring flame through the outer ring injection pipe. The air that enters through the air inlet that the pipe is drawn to the inner ring and draw and penetrate the pipe with the outer loop is primary air, and the air that replenishes the flame root that covers to the fire through mixing the gas ring bottom is secondary air. In the prior art, air supplemented to the root of the flame and air injected into the injection pipe are introduced from the upper part of the panel, primary air and secondary air have a wind robbing phenomenon at the air inlet of the outer ring injection pipe, and simultaneously the primary air at the air inlet of the inner ring injection pipe and the primary air at the air inlet of the outer ring injection pipe also have a wind robbing phenomenon, so that the injection effect is weakened or the outer ring fire cover is insufficient in combustion due to lack of the secondary air.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that primary air and secondary air are blown out at an air inlet of an outer ring ejector pipe, primary air at the air inlet of an inner ring ejector pipe and primary air at the air inlet of an outer ring ejector pipe are blown out, so that the ejection effect is weakened, or the secondary air is not sufficient to cause insufficient combustion at an outer ring fire cover, and provides a gas mixing ring for an upper air inlet burner.

The utility model solves the technical problems through the following technical scheme:

the utility model provides a gas mixing ring for an upper air inlet burner, which comprises an inner ring body, an outer ring body and a flow guide structure, wherein a secondary air channel is formed between the outer ring body and the inner ring body, an inner gas mixing cavity and an inner ring injection hole communicated with the inner gas mixing cavity are arranged on the inner ring body, a first air inlet is formed in the inner ring injection hole, an outer gas mixing cavity and an outer ring injection pipe communicated with the outer gas mixing cavity are arranged on the outer ring body, a second air inlet is formed in the outer ring injection pipe, the first air inlet and the second air inlet are isolated through the flow guide structure, and the second air inlet and the air inlet end of the secondary air channel are isolated through the flow guide structure.

Preferably, the first air inlet is located in the middle of the inner ring body, and the two second air inlets are located on two sides of the first air inlet.

Preferably, the second air inlet is surrounded by the flow guide structure to form a second cavity, a first notch is formed in the second cavity corresponding to the edge of the inner ring, and a first cavity communicated with the first air inlet is formed between the two second cavities.

Preferably, the flow guide structure includes a first flow guide plate having one end connected to the outer ring injection pipe, the first flow guide plate is disposed along the edge of the inner ring body from the side of the second air inlet, and the first flow guide plate separates the second cavity from the air inlet end of the secondary air passage.

Preferably, the other end of the first guide plate is provided with a slope surface, and/or the first guide plate is an arc-shaped plate with a bending direction facing the second air inlet, and/or the lower end of the first guide plate is higher than the lowest position of the second air inlet.

Preferably, the flow guide structure further includes a second flow guide plate, the second flow guide plate is disposed between the first air inlet and the second air inlet, the second flow guide plate extends from the side surface of the second air inlet to the side surface of the adjacent outer ring injection pipe, and the second flow guide plate is used for isolating the first air inlet and the second air inlet.

Preferably, the second baffle is arc-shaped, and the bending direction deviates from the first air inlet.

Preferably, the flow guide structure further includes a third flow guide plate, the third flow guide plate is disposed along an edge of the inner ring body from a side surface of the second air inlet, and an extending direction of the third flow guide plate is opposite to an extending direction of the first flow guide plate.

Preferably, a second gap is formed between the second air deflector and the third air deflector, a third gap for primary air to flow in is arranged at the lower edge of the third air deflector, and the third gap is arched.

Preferably, a concave surface is arranged on the surface of the outer ring injection pipe close to the first air inlet; and/or the presence of a gas in the gas,

the outer ring injection pipe extends from the outer ring body to the inner ring body, and the second air inlet is positioned right below the inner ring body; and/or the presence of a gas in the gas,

the second air inlet is provided with a circular table surface, and the caliber of the circular table surface is gradually reduced from the outer side of the second air inlet to the inner side; and/or the presence of a gas in the gas,

the inner ring body is further provided with a thermocouple mounting hole and an ignition needle mounting hole, the thermocouple mounting hole is located at one second air inlet, and the ignition needle mounting hole is located at the other second air inlet.

The utility model also provides an upper air inlet burner which comprises the air mixing ring.

The positive progress effects of the utility model are as follows:

the second air inlet and the air inlet end of the secondary air channel are isolated by the flow guide structure, so that the phenomenon of wind rush of primary air and secondary air at the second air inlet of the outer ring injection pipe is avoided; meanwhile, the first air inlet and the second air inlet are isolated through the flow guide structure, so that the phenomenon of air rush between primary air at the first air inlet of the inner ring injection hole and primary air at the second air inlet of the outer ring injection pipe is avoided, the sufficient supply of secondary air at the outer ring fire cover and the injection effect of the inner ring injection hole and the outer ring injection pipe are ensured, and the full combustion of fuel gas is facilitated.

Drawings

Fig. 1 is a schematic top view diagram of a mobile device according to a preferred embodiment of the utility model.

Fig. 2 is a schematic structural diagram of a bottom view according to a preferred embodiment of the utility model.

Fig. 3 is a front view of a preferred embodiment of the present invention.

Description of reference numerals:

inner ring body 1

Inner air mixing chamber 11

Inner ring injection hole 12

First air inlet 121

Thermocouple mounting hole 13

Ignition needle mounting hole 14

Outer ring body 2

External air mixing chamber 21

Outer ring ejector tube 22

Second air inlet 221

Round table 2211

Concave surface 222

Flow guiding structure 3

First baffle 31

Slope 311

Second baffle 32

Third baffle 33

Secondary air channel 4

Second chamber 5

First notch 6

First chamber 7

Second notch 8

Third notch 9

Detailed Description

The present invention is further illustrated by the following examples, but is not limited thereby in the scope of the examples described below.

The utility model provides an upper air inlet burner, wherein secondary air of the upper air inlet burner enters from the upper part of a cabinet, the upper air inlet burner comprises an air mixing ring, an inner ring fire cover, an outer ring fire cover and a base provided with an inner ring nozzle and an outer ring nozzle, the inner ring fire cover is connected to the center of the air mixing ring and forms an inner ring air mixing chamber, and mixed gas of fuel gas and primary air in the inner ring air mixing chamber is ejected from a fire hole of the inner ring fire cover to form flame. The outer ring fire cover is connected to the outer ring of the gas mixing ring and forms an outer ring gas mixing chamber, and mixed gas of gas and primary air in the outer ring gas mixing chamber is sprayed out from the fire hole of the outer ring fire cover to form flame. The base is connected with an air supply system through a valve bank, and the inner ring nozzle is used for injecting fuel gas in the air supply system to the inner ring air mixing chamber and injecting primary air. The outer ring nozzle is used for jetting fuel gas in the gas supply system to the outer ring gas mixing chamber and simultaneously injecting primary air. The inner ring fire cover, the outer ring fire cover and the base provided with the inner ring nozzle and the outer ring nozzle are all realized by adopting the prior art, and are not described again, and the gas mixing ring is explained in detail below.

An air mixing ring is used in the upper air inlet burner. As shown in fig. 1-3, the gas mixing ring comprises an inner ring body 1, an outer ring body 2 and a flow guiding structure 3, wherein the inner ring body 1 is used for connecting an inner ring fire cover so as to form an inner ring gas mixing chamber, and the outer ring body 2 is used for connecting an outer ring fire cover so as to form an outer ring gas mixing chamber. The inner ring body 1 and the outer ring body 2 are coaxially arranged, the outer ring body 2 is arranged around the inner ring body 1, and a secondary air channel 4 is formed between the outer ring body 2 and the inner ring body 1. The inner ring body 1 is provided with an inner gas mixing cavity 11 and an inner ring injection hole 12 communicated with the inner gas mixing cavity 11, and the inner gas mixing cavity 11 is a part of the inner ring gas mixing cavity. The inner ring injection hole 12 is provided with a first air inlet 121, and the inner ring injection hole 12 is used for conveying fuel gas and primary air input by the inner ring nozzle. The outer ring body 2 is provided with an annular outer gas mixing cavity 21 and an outer ring injection pipe 22 communicated with the outer gas mixing cavity 21, and the outer gas mixing cavity 21 is annular and arranged around the inner gas mixing cavity 11. The outer ring injection pipe 22 is provided with a second air inlet 221, the outer ring injection pipe 22 is used for conveying fuel gas and primary air input by the outer ring nozzle, the first air inlet 121 and the second air inlet 221 are isolated by the flow guide structure 3, and the second air inlet 221 and the air inlet end of the secondary air channel 4 are isolated by the flow guide structure 3.

As can be seen from the above, in the embodiment, the second air inlet 221 and the air inlet end of the secondary air channel 4 are isolated by the flow guide structure 3, so that the phenomenon of wind robbing of the primary air and the secondary air at the second air inlet 221 of the outer ring ejector pipe 22 is avoided; meanwhile, the first air inlet 121 and the second air inlet 221 are isolated by the diversion structure 3, so that the phenomenon of wind rush between primary air at the first air inlet 121 of the inner ring injection hole 12 and primary air at the second air inlet 221 of the outer ring injection pipe 22 is avoided, sufficient supply of secondary air at the outer ring fire cover and injection effects of the inner ring injection hole 12 and the outer ring injection pipe 22 are guaranteed, and sufficient combustion of fuel gas is facilitated.

In this embodiment, the first air inlet 121 is located in the middle region of the inner ring body 1, preferably in the center region of the inner ring body 1, correspondingly, the inner ring nozzle for supplying air to the inner ring fire cover is arranged at the center of the base and sprays fuel gas upwards, the two second air inlets 221 are located at two sides of the first air inlet 121, and the orientations of the two second air inlets 221 are opposite, so that air suction is performed from opposite directions, the two outer ring injection pipes 22 are prevented from catching wind, and sufficient combustion of the fuel gas is facilitated.

In this embodiment, the flow guide structure 3 encloses a second cavity 5 at the second air inlet 221, a first notch 6 is disposed at a position on the second cavity 5 corresponding to the edge of the inner ring 1, and a first cavity 7 communicated with the first air inlet 121 is formed between the two second cavities 5. The second cavity 5 is a relatively independent space, which can ensure sufficient injection of the primary air of the second air inlet 221, and the first cavity 7 is a relatively independent space which can ensure sufficient injection of the primary air of the first air inlet 121.

In this embodiment, the flow guiding structure 3 includes a first flow guiding plate 31 having one end connected to the outer-ring ejector tube 22, the first flow guiding plate 31 is disposed along the edge of the inner ring 1 from the side of the second air inlet 221, and the first flow guiding plate 31 isolates the air inlet ends of the second cavity 5 and the secondary air channel 4. The first guide plate 31 and the first notch 6 guide the air, a part of the air flows into the first cavity 7 and the second cavity 5 to form primary air, a part of the air enters the secondary air channel 4 to form secondary air, and the primary air and the secondary air avoid the occurrence of a strong wind phenomenon due to the existence of the first guide plate 31.

In this embodiment, the other end of the first flow guiding plate 31 is provided with a slope 311, the first flow guiding plate 31 is an arc-shaped plate with a bending direction facing the second air inlet 221, and the lower end of the first flow guiding plate 31 is higher than the lowest position of the second air inlet 221. The slope 311 is arranged to make the primary air more conveniently flow through the first gap 6 and enter the second cavity 5; the first guide plate 31 is an arc-shaped plate, which is beneficial to increasing the volume of the second cavity 5 and ensures the sufficient supply of primary air; the lower end of the first baffle 31 is higher than the lowest position of the second air inlet 221, which is beneficial to ensuring the air isolation effect. Note that in other embodiments, the first flow guiding plate 31 has a slope 311, the first flow guiding plate 31 is disposed as an arc-shaped plate with a bending direction facing the corresponding second air inlet 221, and the lowest position of the lower end of the first flow guiding plate 31 higher than the second air inlet 221 may be alternatively or alternatively disposed.

In this embodiment, the flow guide structure 3 further includes a second flow guide plate 32, the second flow guide plate 32 is disposed between the first air inlet 121 and the second air inlet 221, the second flow guide plate 32 extends from the side of the second air inlet 221 to the side of the adjacent outer ring injection pipe 22, and the second flow guide plate 32 is used for isolating the first air inlet 121 and the second air inlet 221. The second guide plate 32 isolates the first air inlet 121 and the second air inlet 221, so that the phenomenon of air robbery at the first air inlet 121 and the second air inlet 221 is avoided, and the full combustion of fuel gas is facilitated.

In this embodiment, second guide plate 32 is the arc, and crooked direction deviates from first air inlet 121, and such shape setting is favorable to increasing the volume of first cavity 7, guarantees the abundant supply of primary air, and then guarantees the abundant burning of the gas of inner ring injection hole 12.

In this embodiment, the flow guiding structure 3 further includes a third flow guiding plate 33, the third flow guiding plate 33 is disposed along the edge of the inner ring body 1 from the side of the second air inlet 221, and the extending directions of the third flow guiding plate 33 and the first flow guiding plate 31 are opposite. The third guide plate 33 is arranged to facilitate relative independence of the first cavity 7, and increase the volume of the first cavity 7.

In this embodiment, a second notch 8 is formed between the second flow guiding plate 32 and the third flow guiding plate 33, a third notch 9 for primary air to flow in is arranged on the lower edge of the third flow guiding plate 33, and the third notch 9 is arched. The second gap 8 and the third gap 9 are arranged in such a way that primary air flows into the first cavity 7 to provide a channel, so that the primary air supply of the first cavity 7 is ensured, and the sufficient combustion of the fuel gas of the inner ring injection hole 12 is facilitated.

In this embodiment, the surface of the outer ring injection pipe 22 close to the first air inlet 121 is provided with a concave surface 222, which is beneficial for the mixed gas of the fuel gas and the primary air to flow into the inner ring injection hole 12 from the first air inlet 121; the outer ring injection pipe 22 extends from the outer ring body 2 to the inner ring body 1, the second air inlet 221 is positioned right below the inner ring body 1, and the first air inlet 121 and the second air inlet 221 are both positioned below the inner ring body 1, so that the introduction of fuel gas and primary air is facilitated; the second air inlet 221 is provided with a circular table top 2211, the caliber of the circular table top 2211 is gradually reduced from the outer side to the inner side of the second air inlet 221, and gas and primary air of the second cavity 5 can conveniently enter the second air inlet 221; still be equipped with thermocouple mounting hole 13 and ignition needle mounting hole 14 on the interior annular body 1, thermocouple mounting hole 13 is located a second air inlet 221 department, and ignition needle mounting hole 14 is located another second air inlet 221 department, is favorable to the simple to operate of thermocouple and ignition needle, guarantees the combustion safety and the ignition convenience of combustor.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.

Claims (11)

1. The gas mixing ring for the upper air inlet burner is characterized by comprising an inner ring body, an outer ring body and a flow guide structure, wherein a secondary air channel is formed between the outer ring body and the inner ring body, an inner gas mixing cavity and an inner ring injection hole communicated with the inner gas mixing cavity are arranged on the inner ring body, a first air inlet is formed in the inner ring injection hole, an outer gas mixing cavity and an outer ring injection pipe communicated with the outer gas mixing cavity are arranged on the outer ring body, a second air inlet is formed in the outer ring injection pipe, the first air inlet and the second air inlet are isolated through the flow guide structure, and the second air inlet and the air inlet end of the secondary air channel are isolated through the flow guide structure.

2. The mixing ring of claim 1, wherein said first inlet port is located in the middle of said inner ring body and two of said second inlet ports are located on either side of said first inlet port.

3. The mixing ring as claimed in claim 1, wherein the flow guide structure defines a second cavity at the second air inlet, a first notch is disposed at a position of the second cavity corresponding to the edge of the inner ring, and a first cavity communicated with the first air inlet is formed between the two second cavities.

4. The mixing ring as claimed in claim 3, wherein the flow guide structure includes a first flow guide plate having one end connected to the outer injection pipe, the first flow guide plate is disposed along the edge of the inner ring body from the side of the second air inlet, and the first flow guide plate separates the second cavity from the air inlet end of the secondary air passage.

5. The mixing ring as claimed in claim 4, wherein the other end of the first guide plate is provided with a slope, and/or the first guide plate is an arc-shaped plate with a bending direction towards the second air inlet, and/or the lower end of the first guide plate is higher than the lowest position of the second air inlet.

6. The mixing ring of claim 5, wherein the flow guide structure further comprises a second flow guide plate, the second flow guide plate is disposed between the first air inlet and the second air inlet, the second flow guide plate extends from a side surface of the second air inlet to a side surface of an adjacent outer ring ejector pipe, and the second flow guide plate is used for isolating the first air inlet and the second air inlet.

7. The mixing ring of claim 6, wherein the second baffle is arcuate and curves away from the first inlet.

8. The mixing ring as claimed in claim 6, wherein the flow guide structure further comprises a third flow guide plate, the third flow guide plate is disposed along the edge of the inner ring from the side of the second gas inlet, and the third flow guide plate and the first flow guide plate extend in opposite directions.

9. The mixing ring of claim 8, wherein a second gap is formed between the second baffle and the third baffle;

and a third notch for primary air to flow in is arranged at the lower edge of the third guide plate, and the third notch is arched.

10. Gas mixing ring according to any one of claims 1 to 9,

a concave surface is arranged on the surface of the outer ring injection pipe close to the first air inlet; and/or the presence of a gas in the gas,

the outer ring injection pipe extends from the outer ring body to the inner ring body, and the second air inlet is positioned right below the inner ring body; and/or the presence of a gas in the atmosphere,

the second air inlet is provided with a circular table surface, and the caliber of the circular table surface is gradually reduced from the outer side of the second air inlet to the inner side; and/or the presence of a gas in the gas,

the inner ring body is further provided with a thermocouple mounting hole and an ignition needle mounting hole, the thermocouple mounting hole is located at one second air inlet, and the ignition needle mounting hole is located at the other second air inlet.

11. An upper intake burner, characterized in that it comprises a mixing ring according to any one of claims 1 to 10.

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