CN210801179U - Novel dense-dilute combustor inner shell - Google Patents
Novel dense-dilute combustor inner shell Download PDFInfo
- Publication number
- CN210801179U CN210801179U CN201921197263.0U CN201921197263U CN210801179U CN 210801179 U CN210801179 U CN 210801179U CN 201921197263 U CN201921197263 U CN 201921197263U CN 210801179 U CN210801179 U CN 210801179U
- Authority
- CN
- China
- Prior art keywords
- premixing
- flame
- inner shell
- cavity
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a novel dense-dilute combustor inner shell, which comprises two groups of inner shell side plates which are oppositely arranged, wherein the two groups of inner shell side plates form a premixing channel and a dilute flame premixing cavity which are mutually communicated, the premixing channel is provided with a fuel inlet, and the dilute flame premixing cavity is provided with a fuel outlet; the inner shell side plate is provided with a dense flame premixed gas inlet communicated with the premixing channel, and the inner shell side plate is provided with a secondary air inlet through which outside air enters the dilute flame premixing cavity. In the utility model, the inner shell side plate can form a dense flame cavity with the outer shell arranged outside the inner shell side plate, the dense flame cavity is communicated with the dense flame premixed gas inlet, the dense flame cavity and the light flame premixed cavity realize the staggered distribution of dense flame airflow and light flame premixed gas in space and time, and the dense-light flow distribution is skillfully realized; the utility model provides a current combustor inner shell of carrying simple structure in the line, can not distinguish the problem of dense flame gas flow channel and light flame gas flow channel.
Description
Technical Field
The utility model relates to a combustor technical field, more specifically relates to a novel shade combustor inner shell.
Background
Under the large background of emission reduction and environmental protection of various countries in the world, the low-NOx combustion technology becomes a development trend of a gas water heater in the future, however, in the industry of the gas water heater, particularly in the domestic market, the structure of a low-NOx burner shell is complex, in order to enable an airflow channel to form a thick flame airflow channel and a light flame airflow channel, the burner shell is generally provided with double injection channels, the design of the double injection channels is adopted, the production process is complex, the cost is high, the dimensional stability is poor, and the combustion performance is unstable during batch production. The existing simple combustor inner shell in the industry cannot distinguish a dense flame airflow channel from a dilute flame airflow channel. Therefore, the gas water heater industry is in urgent need of research and utility model of a new burner shell with simple structure.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the interior current simple structure's of trade combustor inner shell, can not distinguish dense flame airflow channel and the problem of light flame airflow channel, provide a novel dense and light combustor inner shell.
In order to solve the technical problem, the utility model discloses a technical scheme is: a novel inner shell of a thick-thin combustor comprises two groups of inner shell side plates which are oppositely arranged, wherein the two groups of inner shell side plates form a premixing channel and a thin flame premixing cavity which are mutually communicated, the premixing channel is provided with a fuel inlet, and the thin flame premixing cavity is provided with a fuel outlet; the inner shell side plate is provided with a dense flame premixing air inlet communicated with the premixing channel, and the inner shell side plate is provided with a secondary air inlet through which outside air enters the dilute flame premixing cavity.
In the technical scheme, two groups of inner shell side plates which are oppositely arranged form a premixing channel and a light flame premixing cavity which are communicated with each other; when the inner shell is used, the inner shell is matched with the outer shell, and a dense flame cavity is formed between the side plate of the inner shell and the outer shell; the dense flame cavity is communicated with the premixing channel through a dense flame premixing gas inlet; the fuel and the air are mixed to form premixed gas, the premixed gas enters from a fuel inlet of the premixing channel, after passing through the premixing channel, a part of the premixed gas enters the light flame premixing cavity and then is mixed with the air entering from the secondary air inlet to form light flame air flow, and the premixed gas and the secondary air passing through the secondary air inlet are favorably secondarily mixed to form the light flame air flow; the other part of premixed gas enters the dense flame cavity through a dense flame premixed gas inlet arranged on the side plate of the inner shell to form dense flame airflow. The dense flame premixed gas inlet communicated with the premixing channel and the dense flame cavity can be communicated with the dense flame cavity, so that the staggered distribution of dense flame airflow and the dense flame premixed gas in space and time is realized, and dense-dilute distribution is skillfully realized; the utility model provides a current combustor inner shell of carrying simple structure in the line, can not distinguish the problem of dense flame gas flow channel and light flame gas flow channel.
Preferably, a compression structure protruding towards the outer side of the premixing channel is arranged at the joint of the premixing channel and the light flame premixing cavity. In this technical scheme, the die mould structure can change the passageway size of premixing passageway, and the size change of premixing passageway can be used for adjusting the gas in advance and rise the in-process, along the gas in advance vertical ascending velocity of flow uniformity of the gas in advance of inner shell curb plate both ends direction.
Preferably, the height value of the profiling structure protruding from the premixing channel is gradually increased along the flow direction of the premixed gas in the premixing channel. In the technical scheme, the flow speed of the premixed gas in the flow direction of the premixing channel is gradually reduced (namely the flow speed of the premixed gas in the left side of the premixing channel is greater than the flow speed of the premixed gas in the right side of the premixing channel), and in order to ensure the consistency of the flow speed of the premixed gas, the height value of the profiling structure is gradually increased in the flow direction of the premixing channel, so that the channel formed by the profiling structure on the left side of the premixing channel is narrower than the channel formed by the profiling structure on the right side of the premixing channel, and the profiling structure is beneficial to reducing the speed of the premixed gas in the premixing channel on the left side and increasing the speed of the premixed gas in the premixing channel on the right side, so that the flow speed of the premixed gas in the premixing channel can be balanced, and the consistency of the ascending speed of.
Preferably, the inner shell side plate comprises a premixing channel side plate and a light flame premixing cavity side plate which are integrally formed, the premixing channel is formed by two groups of premixing channel side plates, and the light flame premixing cavity is formed by two groups of light flame premixing cavity side plates. In the technical scheme, the two groups of premixing channel side plates form premixing channels, and the premixing channels can be used for mixing fuel and air entering the fuel inlets of the premixing channels for the first time. The two groups of light flame premixing cavity side plates form a light flame premixing cavity, and the light flame premixing cavity can be used for carrying out secondary mixing on fuel flowing in from a premixing channel and air entering from a secondary air inlet.
Preferably, a plurality of groove structures are uniformly arranged on the side plate of the light flame premixing cavity, and a convex structure is formed between two adjacent groove structures; the dense flame premixed gas inlet is arranged on the convex structure, and the secondary air inlet is arranged on the side wall of the groove structure along the vertical direction. Due to the fact that the groove structures are arranged uniformly, the light flame premixed gas and the secondary air are mixed uniformly, and the uniformity of the flow velocity of the light flame premixed gas at the light flame premixing cavity is guaranteed. In addition, the uniform arrangement of the convex structures enables the uniformity of the flow velocity of the rich flame airflow coming out of the rich flame premixing gas inlet.
In this technical scheme, the shell is installed behind the inner shell, forms the dense flame cavity between shell and the inner shell curb plate, and through setting up the dense flame premixed gas entry on protruding type structure, the premixed gas in the premixing passageway can follow and enter into in the dense flame cavity from dense flame premixed gas entry. It should be noted that, when the outer shell is installed on the inner shell side plate, the groove structure can form a channel, and the secondary air inlet is arranged on the side wall of the groove structure along the vertical direction, so that the external air can enter the light flame premixing cavity from the secondary air inlet along the channel formed by the groove structure.
Preferably, the secondary air intake is located above the rich flame premix gas inlet. It should be noted that, in the process that the premixed gas flows from the premixing channel, the premixed gas is divided into two parts, one part of premixed gas flows into the light flame premixing cavity, and the part of premixed gas is mixed with the air entering from the secondary air inlet to form the light flame premixed gas; the other part of premixed gas enters the dense flame cavity through the dense flame premixed gas inlet to form dense flame airflow; in order to avoid the premixed gas entering the dense flame cavity from mixing with the light flame airflow, the height of the dense flame premixed gas inlet is lower than that of the secondary air inlet, so that the phenomenon that the light flame premixed gas is mixed into the dense flame airflow to influence the combustion effect of the dense flame can be avoided.
Preferably, the dense flame premixed gas inlet is a folded edge guide hole, and the folded edge guide hole comprises a folded plate arranged on the convex structure and a guide hole penetrating through the convex structure. In the technical scheme, the folded plate has the function of shunting, so that part of premixed gas in the premixing channel can be guided into the flow guide holes and flows into the dense flame cavity through the flow guide holes.
Preferably, the flow guide hole is obliquely arranged on the convex structure, the flow guide hole positioned on the inner side of the convex structure is far away from the fuel outlet, and the flow guide hole positioned on the outer side of the convex structure is close to the fuel outlet. In this technical scheme, the water conservancy diversion hole adopts the structure setting of slope, is favorable to premixing gas in the premixing passageway to get into from the water conservancy diversion hole entry end on the convex structure medial surface fast to flow guide hole exit end on the convex structure lateral surface enters into in the dense flame cavity along the ascending water conservancy diversion hole of slope. It should be noted that the diversion hole may be a circular hole, a square hole, or a hole with other shapes.
Preferably, the premixing channel and the light flame premixing cavity form a Z-shaped structure or a T-shaped structure. The premixing channel comprises an injection section and a mixing section which are sequentially communicated with the fuel inlet. And the edges of the two groups of inner shell side plates are provided with fixing plates for fixing the inner shell of the combustor.
In the technical scheme, the premixing channel can be horizontally arranged left and right and forms a Z shape with the left and right directions of the fuel outlet, the premixing channel can also vertically upwards form a T shape with the left and right directions of the fuel outlet, or the premixing channel can form any angle with the left and right directions of the fuel outlet. The fuel and the air are mixed and then enter from a fuel inlet of the premixing channel, and respectively flow into the light flame premixing cavity and the thick flame cavity through the injection section and the mixing section. It should be noted that the two sets of inner shell side plates may be integrally formed or welded together by the fixing plate.
Compared with the prior art, the beneficial effects are:
the premixed gas is divided into two streams of dense flame premixed gas and a middle stream of light flame premixed gas through a single injection channel; the premixed gas and secondary air entering from a secondary air inlet form a light flame premixed gas in a light flame premixing cavity; the light flame airflow and the thick flame airflow are distributed in a staggered manner in space and time, so that thick and thin flow splitting is ingeniously realized; the single injection passage combustor inner shell has a simple structure, is convenient to form, and has good consistency of the size and the combustion performance of the combustor shell during batch production; the dense flame premixed gas inlets are uniformly arranged, so that the uniformity of the flow speed when the dense flame airflow flows out of the dense flame premixed gas inlets is realized; the uniformity of the secondary air inlet is set, so that the premixed gas and the secondary air in the light flame premixing cavity are mixed more uniformly.
Drawings
Fig. 1 is a schematic structural diagram I of the present invention;
FIG. 2 is a schematic structural diagram II of the present invention;
fig. 3 is a perspective view of the present invention;
FIG. 4 is a cross-sectional view taken along the line B-B of FIG. 1 according to the present invention;
fig. 5 is a cross-sectional view taken along the plane a-a in fig. 1 according to the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
examples
As shown in fig. 1 to 5, a novel inner shell of a thick-thin burner comprises two sets of inner shell side plates 1 which are oppositely arranged, wherein the two sets of inner shell side plates 1 form a premixing channel 2 and a thin flame premixing cavity 3 which are mutually communicated, the premixing channel 2 is provided with a fuel inlet 21, and the thin flame premixing cavity 3 is provided with a fuel outlet 31; the inner shell side plate 1 is provided with a dense flame premixed gas inlet 4 for communicating the premixing channel 2 with the dense flame cavity, and the inner shell side plate 1 is provided with a secondary air inlet 5 for allowing outside air to enter the dilute flame premixing cavity 3.
In this embodiment, two sets of inner shell side plates 1 which are arranged oppositely form a premixing channel 2 and a light flame premixing cavity 3 which are communicated with each other, the inner shell is matched with the outer shell when in use, a thick flame cavity can be formed between the inner shell side plates 1 and the outer shell on the outer side of the inner shell, and the thick flame cavity is communicated with the premixing channel 2 through a thick flame premixing gas inlet 4; the fuel and the air are mixed to form premixed gas, the premixed gas enters from a fuel inlet 21 of the premixing channel 2, after passing through the premixing channel 2, a part of the premixed gas enters the light flame premixing cavity 3 and then is mixed with the air entering from the secondary air inlet 5 to form light flame air flow, and the premixed gas and the secondary air passing through the secondary air inlet 5 are mixed secondarily to form the light flame air flow; the other part of premixed gas enters the dense flame cavity through a dense flame premixed gas inlet 4 arranged on the inner shell side plate 1 to form dense flame airflow. The arrangement of the dense flame cavity and the dilute flame premixing cavity 3 realizes the staggered distribution of dense flame airflow and dilute flame premixed gas in space and time, and skillfully realizes dense-dilute flow distribution.
It should be noted that two groups of dense flame cavities can be formed between the outer shell and the two groups of inner shell side plates 1, and the two groups of dense flame cavities are symmetrically arranged on two sides of the light flame premixing cavity 3. The two groups of thick flame cavities are arranged on two sides of the light flame premixing cavity, so that the burner airflow channel is divided into 2 thick flame airflow channels and 1 light flame airflow channel, and the combustion efficiency of the burner is improved. Further, the premixing passage 2 may be horizontally disposed left and right and may form a zigzag shape with the left and right direction of the fuel outlet 31, the premixing passage 2 may be vertically upward and may form a T shape with the left and right direction of the fuel outlet, or the premixing passage 2 may form an arbitrary angle with the left and right direction of the fuel outlet. After being mixed with air, the fuel enters from a fuel inlet 21 of the premixing channel 2 and flows into the light flame premixing cavity 3 and the rich flame cavity respectively through an injection section 22 and a mixing section 23. It should be noted that, two sets of inner shell curb plates 1 can integrated into one piece also can form through the fixed plate 8 welding, and fixed plate 8 sets up the edge that is connected at two sets of inner shell curb plates 1.
Wherein, the joint of the premixing channel 2 and the light flame premixing cavity 3 is provided with a profiling structure 6 which is convexly arranged outside the premixing channel 2. The height value of the profiling structure 6 protruding from the premixing channel 2 is gradually increased along the flow direction of the premixed gas in the premixing channel 2. The flow velocity of the premixed gas in the flow direction of the premixed gas in the premixing passage 2 gradually slows down (namely, the flow velocity of the premixed gas in the left side of the premixing passage 2 is greater than the flow velocity of the premixed gas in the right side of the premixing passage 2), and in order to ensure the uniformity of the flow velocity of the premixed gas, the height value of the profiling structure 6 is gradually increased in the flow direction of the premixing passage 2, so that the channel formed by the profiling structure 6 on the left side of the premixing passage 2 is narrower than the channel formed by the profiling structure 6 on the right side of the premixing passage, and the profiling structure 6 is beneficial to reducing the speed of the premixed gas in the premixing passage 2 on the left side and increasing the flow velocity of the premixed gas in the premixing passage 2 on the right side, so that the flow velocity of the premixed gas in the premixing passage 2 can be balanced, and.
The inner shell side plate 1 comprises a premixing channel side plate 11 and a light flame premixing cavity side plate 12 which are integrally formed, the premixing channel 2 is formed by two groups of premixing channel side plates 11, and the light flame premixing cavity 3 is formed by two groups of light flame premixing cavity side plates 12. The two sets of premixing channel side plates 11 form premixing channels 2, which premixing channels 2 are available for the first mixing of fuel and air entering the fuel inlets 21 of the premixing channels 2. The two groups of light flame premixing cavity side plates 12 form a light flame premixing cavity 3, and the light flame premixing cavity 3 can be used for carrying out secondary mixing on fuel flowing in from the premixing channel 2 and air entering from the secondary air inlet 5.
In addition, a plurality of groove structures 7 are uniformly arranged on the side plate 12 of the light flame premixing cavity, and a convex structure 9 is formed between two adjacent groove structures 7; dense flame premixed gas entry 4 is located on protruding type structure 9, and secondary air inlet 5 sets up on groove structure 7's lateral wall along vertical direction. Due to the uniform arrangement of the groove structures 7, the premixed gas of the light flame and the secondary air are uniformly mixed, and the uniformity of the flow velocity of the premixed gas of the light flame at the premixing cavity is ensured. Furthermore, the uniform arrangement of the convex structures 9 allows for a uniformity of the flow rate of the rich flame gas stream exiting from the rich flame premix gas inlet 4. After the outer shell is installed on the inner shell, a dense flame cavity is formed between the outer shell and the side plate 1 of the inner shell, and through the dense flame premixed gas inlet 5 arranged on the convex structure 9, premixed gas in the premixing channel 2 can enter the dense flame cavity from the dense flame premixed gas inlet 5. It should be noted that, when the outer casing is installed on the inner casing side plate 1, the groove structure 7 may form a channel, and the secondary air inlet is disposed on the side wall of the groove structure 7 along the vertical direction, which is beneficial for the external air to enter the light flame premixing cavity 3 from the secondary air inlet 5 along the channel formed by the groove structure 7.
Wherein, the secondary air inlet 5 is positioned above the rich flame premixed gas inlet 4. It should be noted that, in the process that the premixed gas flows from the premixing channel 2, the premixed gas is divided into two parts, one part of the premixed gas flows into the light flame premixing cavity 3, and the premixed gas of the part is mixed with the air entering from the secondary air inlet 5 to form the light flame premixed gas; the other part of premixed gas enters the dense flame cavity through a dense flame premixed gas inlet 4 to form dense flame airflow; in order to avoid the premixed gas entering the rich flame chamber from mixing with the lean flame gas flow, the rich flame premixed gas inlet 4 is lower than the secondary air inlet 5, and specifically, the distance between the rich flame premixed gas inlet 4 and the fuel outlet 31 is greater than the distance between the secondary air inlet 5 and the fuel outlet 31, so that the lean flame premixed gas is prevented from mixing into the rich flame gas flow, and the combustion effect of the rich flame is prevented from being influenced.
In addition, the dense flame premixed gas inlet 4 is a flanging guide hole, and the flanging guide hole comprises a folded plate 41 arranged on the convex structure 9 and a guide hole 42 penetrating through the convex structure 9. The flap 41 has a flow dividing function, and can guide a part of premixed gas in the premixing passage 2 to the guide hole 42, and flow into the rich flame chamber through the guide hole 42.
The flow guide holes 42 are obliquely arranged on the convex structure 9, the inlet ends of the flow guide holes 42 positioned on the inner side of the convex structure 9 are far away from the fuel outlet 31, and the outlet ends of the flow guide holes 42 positioned on the outer side of the convex structure 9 are close to the fuel outlet 31. The inclined structure of the flow guide holes 42 is favorable for the premixed gas in the premixing channel 2 to rapidly enter from the inlet ends of the flow guide holes 42 on the inner side surface of the convex structure 9 and enter into the dense flame cavity from the outlet ends of the flow guide holes 42 on the outer side surface of the convex structure 9 along the inclined upward flow guide holes 42. It should be noted that the diversion hole 42 may be a circular hole, a square hole, or a hole with other shapes.
The working principle is as follows:
the working principle is as follows: the gas is injected into the injection section 22 of the premixing channel 2 through the fuel inlet 21 under a certain pressure, the air outside the burner is drawn into the premixing channel 2 and is fully mixed in the mixing section 23 to form premixed gas of the gas and the air, as shown in fig. 5, the premixed gas is divided into three gas paths, wherein, the left and the right 2 gas paths form dense flame gas flow after entering a dense flame cavity through a dense flame premixed gas inlet 4, wherein, the dense flame premixed gas inlet 4 can be a flanging guide hole as shown in fig. 5, or can be a round hole or a hole with other shapes directly formed on the inner shell side plate 1, the dense flame premixed gas inlet 4 is arranged at the lower side of the secondary air inlet 5, thereby ensuring that the premixed gas does not participate in the mixing of the secondary air before forming the dense flame premixed gas flow; the other gas path directly enters the light flame premixing cavity 3, the upstream pressure of the light flame premixing cavity 3 is higher than the downstream pressure, the outside air enters the light flame premixing cavity 3 through the secondary air inlet 5 in fig. 4 and is secondarily mixed with the premixed gas to form light flame airflow at the fuel outlet 31, and the premixed gas in the light flame premixing cavity 3 is secondarily mixed with the air, so that the concentration of the fuel is lower than that of the fuel in the left and right thick flame channels, and light flame is formed at the fuel outlet.
In order to reduce NOx emission, experiments prove that when the primary air coefficient of the rich flame is 0.5-0.6, the NOx amount generated by the rich flame is low, the primary air is insufficient, the combustion is in an incomplete state, the combustion temperature is low, the generation of NOx is not facilitated, and meanwhile, fuel which is not completely combusted can be subjected to secondary combustion through secondary air, so that the generation of CO is effectively controlled; when the primary air coefficient of the light flame is 1.6, because oxygen is rich in the primary combustion process of the fuel, the heat released by the fuel combustion is taken away by redundant air and discharged outdoors, so that the combustion temperature of the light flame is lower, the combustion of the thick flame is stable, the light flame can be effectively prevented from leaving the flame, and the stable combustion of the combustor is ensured.
In order to ensure that the flow velocity of the dense flame premixed gas is uniform in the left and right directions of the inner shell of the burner, a plurality of dense flame premixed gas inlets 4 can be uniformly distributed in the left and right directions of the inner shell at equal intervals, and after the premixed gas in the premixing channel 2 enters the light flame premixing channel, a plurality of secondary air inlets 5 can be uniformly distributed in the left and right directions of the side plate 1 of the inner shell at equal intervals in order to ensure that the premixed gas is fully and uniformly mixed with the secondary air in the left and right directions of the light flame premixing cavity 3. The distance between the secondary air inlet 5 and the fuel outlet 31 can be determined through experiments, on the premise of ensuring the air flow speed of the light flame hole, the light flame height, the inner shell volume and other parameters, the larger the distance is, the more uniform the mixing of the light flame premixed gas and the secondary air tends to be, and the primary air coefficient of the light flame can be better ensured to be 1.6, so that the generation of NOx is effectively controlled.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A novel dense-dilute combustor inner shell is characterized in that: the flame premixing device comprises two groups of inner shell side plates (1) which are oppositely arranged, wherein the two groups of inner shell side plates (1) form a premixing channel (2) and a light flame premixing cavity (3) which are mutually communicated, the premixing channel (2) is provided with a fuel inlet (21), and the light flame premixing cavity (3) is provided with a fuel outlet (31); the inner shell side plate (1) is provided with a dense flame premixed gas inlet (4) communicated with the premixing channel (2), and the inner shell side plate (1) is provided with a secondary air inlet (5) for allowing outside air to enter the dilute flame premixing cavity (3).
2. A new type of inner casing for a thick and thin burner as set forth in claim 1, wherein: and a compression structure (6) which is convexly arranged towards the outer side of the premixing channel (2) is arranged at the joint of the premixing channel (2) and the light flame premixing cavity (3).
3. A new type of inner casing for a thick and thin burner as set forth in claim 2, wherein: the height value of the profiling structure (6) convexly arranged on the premixing channel (2) is gradually increased along the flowing direction of the premixing air in the premixing channel (2).
4. A new type of thick and thin burner inner casing as claimed in claim 1 or 3, characterized in that: the inner shell side plate (1) comprises a premixing channel side plate (11) and a light flame premixing cavity side plate (12) which are integrally formed, the premixing channel (2) is formed by two groups of premixing channel side plates (11), and the light flame premixing cavity (3) is formed by two groups of light flame premixing cavity side plates (12).
5. A novel thick and thin burner inner shell as claimed in claim 4, characterized in that: a plurality of groove structures (7) are uniformly arranged on the side plate (12) of the light flame premixing cavity, and a convex structure (9) is formed between two adjacent groove structures (7); the dense flame premixing inlet (4) is arranged on the convex structure (9), and the secondary air inlet (5) is arranged on the side wall of the groove structure (7) in the vertical direction.
6. A novel thick and thin burner inner shell as claimed in claim 5, characterized in that: the secondary air inlet (5) is positioned above the rich flame premixed gas inlet (4).
7. A novel thick-thin burner inner shell as claimed in claim 6, characterized in that the thick-flame premixed gas inlet (4) is a flanged flow guide hole, which comprises a folded plate (41) arranged on the convex structure (9) and a flow guide hole (42) penetrating through the convex structure (9).
8. A novel thick and thin burner inner shell, as set forth in claim 7, characterized in that said flow guide holes (42) are obliquely formed on said convex structure (9), the inlet ends of the flow guide holes (42) located inside the convex structure (9) are far from said fuel outlet (31), and the outlet ends of the flow guide holes (42) located outside the convex structure (9) are close to said fuel outlet (31).
9. A new type of inner casing for a thick and thin burner as set forth in claim 1, wherein: the premixing channel (2) and the light flame premixing cavity (3) form a Z-shaped structure or a T-shaped structure.
10. A new type of inner casing for a thick and thin burner as set forth in claim 1, wherein: the premixing channel (2) comprises an injection section (22) and a mixing section (23) which are sequentially communicated with the fuel inlet (21); and fixing plates (8) used for fixing the combustor inner shell are arranged at the edges where the two groups of inner shell side plates (1) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921197263.0U CN210801179U (en) | 2019-07-25 | 2019-07-25 | Novel dense-dilute combustor inner shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921197263.0U CN210801179U (en) | 2019-07-25 | 2019-07-25 | Novel dense-dilute combustor inner shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210801179U true CN210801179U (en) | 2020-06-19 |
Family
ID=71241564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921197263.0U Active CN210801179U (en) | 2019-07-25 | 2019-07-25 | Novel dense-dilute combustor inner shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210801179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397919A (en) * | 2019-07-25 | 2019-11-01 | 广东万和新电气股份有限公司 | A kind of novel shade burner inner casing |
-
2019
- 2019-07-25 CN CN201921197263.0U patent/CN210801179U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397919A (en) * | 2019-07-25 | 2019-11-01 | 广东万和新电气股份有限公司 | A kind of novel shade burner inner casing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103134078B (en) | Array standing vortex fuel-air premixer | |
| CN106642109B (en) | Low nitrogen oxide burner of gas heating water heater | |
| CN104081125A (en) | Rapid energy release burner and method for using the same | |
| CN218033135U (en) | Thick and thin combustor and gas household appliance | |
| CN210801179U (en) | Novel dense-dilute combustor inner shell | |
| US4175919A (en) | Gas burner | |
| CN108954393A (en) | A kind of advanced standing vortex burning chamber of built-in flow spoiler | |
| CN106949466A (en) | Burner and gas kitchen ranges | |
| CN110081462B (en) | Low-pollution combustion chamber | |
| CN210568417U (en) | Low nitrogen oxide combustor | |
| CN214064905U (en) | Thick and thin burning fire grate, combustor and water heater | |
| CN110296398A (en) | A kind of low nitrogen oxide burner | |
| CN205690682U (en) | Full premix combustion heat-exchanger rig | |
| CN105992913B (en) | Flow inner burner module | |
| CN108954317B (en) | Negative pressure low NO for wall hanging stovexBurner with a burner head | |
| CN210568418U (en) | Low nitrogen oxide combustor | |
| CN208967842U (en) | A kind of advanced standing vortex burning chamber of built-in flow spoiler | |
| CN206419956U (en) | A kind of new stable flame combusting device | |
| CN110397919A (en) | A kind of novel shade burner inner casing | |
| CN202884967U (en) | Boiler preheater by-pass mixer | |
| CN112197296A (en) | Flame tube wall plate | |
| CN216047656U (en) | Furnace end, upper air inlet burner and gas stove | |
| CN218672169U (en) | Fire grate for burner, burner and water heater | |
| CN211290046U (en) | Thick-thin combustor and gas device | |
| CN215336317U (en) | Novel modular low-nitrogen staged burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |