Burner assembly

By designing a burner assembly with a multi-chamber structure and a trapezoidal main air chamber, the problems of insufficient concentration of premixed gas discharged by the traditional burner are solved, and more efficient flame generation and stability are achieved.

CN222480499UActive Publication Date: 2025-02-14SHANGHAI DAIDING IND EQUIP
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Patent Information

Application Number
CN202421297173.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-07
Publication Date
2025-02-14
Estimated Expiration
2034-06-07

AI Technical Summary

Technical Problem

The nozzle structure of the traditional flame treatment burner results in insufficient concentration of the spray premix gas, low ejection rate, and insufficient flame temperature and stability.

Method used

A burner assembly is designed, including a cavity with a top opening, a jet plate, a homogenizer, an intake port and a deflector, which separates the cavity into a plurality of chambers through the jet plate and a homogenizer, and passes through the deflector. The plate separates the main air chamber and the secondary air chamber. The main air chamber has a trapezoidal structure to form a Venturi effect and improves the rate and concentration of the premixed gas.

Benefits of technology

It effectively improves the rate and concentration of premixed gas spraying from the nozzle, improves the temperature and stability of the flame, and has stronger applicability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a burner assembly which comprises a cavity with an opening in the top, an air injection plate, an air uniformizing plate, an air inlet and a flow guide plate. The air spraying plate and the air uniformizing plate are sequentially arranged in the cavity from top to bottom, and an inner cavity of the cavity is divided into a first chamber and a second chamber; the air injection plate is provided with a main nozzle and auxiliary nozzles located on the two sides of the main nozzle. Air uniformizing holes communicated with the main nozzle and the auxiliary nozzle are formed in the air uniformizing plate; the air inlet is formed in the bottom of the cavity and is communicated with the second cavity; the guide plate is arranged in the first cavity and divides the first cavity into a main air chamber communicated with the main nozzle and an auxiliary air chamber communicated with the auxiliary nozzle; the main air chamber is provided with a trapezoid structure, and the cross section area of the trapezoid structure is gradually decreased in the direction close to the main nozzle. Through the arrangement, the speed and the concentration ratio of premixed gas penetrating out of the main gas chamber to the outside of the main nozzle can be effectively improved, correspondingly, the purpose of improving the temperature and the concentration ratio of flames generated by the premixed gas can be achieved, and the applicability is higher.
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Description

Technical Field

[0001] The utility model relates to the field of combustion, in particular to a burner assembly. Background Art

[0002] The jet structure of the currently known flame treatment burner is generally a multi-hole structure. Due to the limitations of its structural form and combustion method, this burner has the problem of insufficient concentration of the premixed gas and a relatively low jet rate, which in turn leads to a relatively low flame temperature and limited effect on product treatment. In addition, actual observations have found that since the nozzle outlet of the traditional flame treatment burner is often exposed to the outside, the flame generated is easily disturbed by the external fluid, which makes it difficult to maintain a good flame state for a long time in both the highly overoxygenated and the highly underoxygenated states, and there are certain limitations.

[0003] Therefore, a burner assembly is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a burner assembly to increase the rate at which the nozzle sprays premixed gas, thereby increasing the concentration and temperature of flame combustion, and also increasing the stability of the flame.

[0005] In order to solve the above technical problems, the utility model provides a burner assembly, including a cavity with a top opening, an air injection plate, an air uniformity plate, an air inlet and a guide plate;

[0006] The air injection plate and the air equalization plate are sequentially arranged in the cavity from top to bottom, and separate the inner cavity of the cavity into a first cavity and a second cavity;

[0007] The jet plate is provided with a main nozzle and auxiliary nozzles located on both sides of the main nozzle;

[0008] The gas equalizing plate is provided with gas equalizing holes connected with the main nozzle and the auxiliary nozzle;

[0009] The air inlet is arranged at the bottom of the cavity and communicates with the second chamber;

[0010] The guide plate is disposed in the first chamber, and divides the first chamber into a main air chamber connected to the main nozzle and a secondary air chamber connected to the secondary nozzle;

[0011] The main air chamber has a trapezoidal structure, and the cross-sectional area of ​​the trapezoidal structure decreases along a direction approaching the main nozzle.

[0012] Furthermore, there are two guide plates, which are symmetrically arranged;

[0013] The two guide plates are gradually inclined from top to bottom in the first chamber in a direction away from each other, so as to separate the first chamber into the main air chamber with the trapezoidal structure.

[0014] Furthermore, the outlet of the main nozzle extends above the outlet of the auxiliary nozzle and is located inside the cavity, so that a mixed gas recirculation zone and a premixed gas recirculation zone are formed between the main nozzle and the opening end surface of the cavity and between the auxiliary nozzle and the cavity, respectively.

[0015] Furthermore, the jet plate is configured as a convex structure, and the main nozzle is disposed in the middle of the jet plate.

[0016] Furthermore, both sides of the opening of the cavity are provided with protrusions extending in the direction of the axial line thereof;

[0017] The protrusion is located above the auxiliary nozzle.

[0018] Furthermore, the main nozzle is configured as a slot-shaped structure.

[0019] Furthermore, the air equalization hole includes a first air supply hole and second air supply holes located on both sides of the first air supply hole;

[0020] The first air supply hole is in communication with the main air chamber;

[0021] The second air supply hole is communicated with the auxiliary air chamber.

[0022] Furthermore, the first air supply hole and the second air supply hole are both configured as circular spray hole structures.

[0023] Further, the cavity includes a U-shaped shell, a mounting flange and a side blind plate;

[0024] The mounting flange is fixedly mounted on one side of the U-shaped housing;

[0025] The side blind plate is fixedly mounted on the other side of the U-shaped housing.

[0026] Further, the cavity also includes a spark plug mounting block;

[0027] The spark plug mounting block is arranged on the outer wall of the U-shaped housing.

[0028] Compared with the prior art, the utility model has at least the following beneficial effects:

[0029] By arranging a jet plate and an air equalizing plate, the cavity is divided into a first chamber and a second chamber, and by arranging a guide plate, the first chamber can be divided into a main air chamber and a secondary air chamber. Since the main air chamber has a trapezoidal structure, a Venturi effect is formed, so that the rate and concentration of the premixed gas passing from the main air chamber to the outside of the main nozzle can be effectively improved. Correspondingly, the purpose of increasing the flame temperature and concentration can be achieved, and the applicability is stronger.

[0030] Furthermore, by arranging auxiliary nozzles on both sides of the main nozzle, part of the premixed gas can also pass through the gas equalizing plate and the auxiliary air chamber in sequence to be ejected from the auxiliary nozzles to cooperate with the main nozzle, thereby further increasing the temperature of the flame generated by the device.

[0031] Furthermore, by extending the outlet of the main nozzle to above the auxiliary nozzle and situating it inside the cavity, that is, the cavity can wrap the outlets of the main nozzle and the auxiliary nozzle, so that a mixed gas recirculation zone and a premixed gas recirculation zone are formed between the main nozzle and the opening end face of the cavity and between the auxiliary nozzle and the cavity. Since the gas velocity in the recirculation zone is relatively low and the flame in this area is not easily disturbed by external fluids, it can maintain a stable combustion state for a long time, thereby achieving the purpose of improving flame stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of the burner assembly of the utility model;

[0033] Figure 2 It is a cross-sectional view of the first air supply hole in the burner assembly of the utility model;

[0034] Figure 3 It is a cross-sectional view of the second air supply hole in the burner assembly of the utility model;

[0035] Figure 4 It is a top view of the burner assembly of the utility model.

[0036] Figure numbers: 1. Mounting flange; 2. Side blind plate; 3. U-shaped shell; 4. Air inlet; 5. Spark plug mounting block; 6. Jet plate; 7. Guide plate; 8. Main air chamber; 9. Air equalizing plate; 10. Auxiliary air chamber; 11. First air supply hole; 12. Second chamber; 13. Second air supply hole; 14. Main nozzle; 15. Auxiliary nozzle. DETAILED DESCRIPTION

[0037] The burner assembly of the utility model will be described in more detail below in conjunction with the schematic diagram, wherein the preferred embodiment of the utility model is shown, and it should be understood that the technicians in this field can modify the utility model described here, and still achieve the beneficial effects of the utility model. Therefore, the following description should be understood as a broad knowledge to the technicians in this field, and not as a limitation of the utility model.

[0038] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0039] like Figures 1 to 4 As shown, an embodiment of the utility model provides a burner assembly, including a cavity with a top opening, an air injection plate 6, an air uniforming plate 9, an air inlet 4 and a guide plate 7.

[0040] The air injection plate 6 and the air equalization plate 9 are sequentially arranged in the cavity from top to bottom, and separate the inner cavity of the cavity into a first cavity and a second cavity 12 .

[0041] The jet plate 6 has a main nozzle 14 and auxiliary nozzles 15 located on both sides of the main nozzle 14 .

[0042] The gas equalizing plate 9 is provided with a gas equalizing hole connected to the main nozzle 14 and the auxiliary nozzle 15, and the air inlet 4 is provided at the bottom of the cavity and connected to the second chamber 12. The premixed gas can sequentially pass through the second chamber 12 and the gas equalizing hole and be discharged from the main nozzle 14 and the auxiliary nozzle 15, thereby generating a flame.

[0043] The guide plate 7 is disposed in the first chamber, and divides the first chamber into a main air chamber 8 connected to the main nozzle 14 and a secondary air chamber 10 connected to the secondary nozzle 15 .

[0044] It should be particularly noted that the main air chamber 8 has a trapezoidal structure, and the cross-sectional area of ​​the trapezoidal structure decreases along the direction approaching the main nozzle 14, so as to guide the premixed gas to gradually move closer to the middle, thereby improving the concentration of the premixed gas, and under the Venturi effect, it can effectively accelerate the transfer rate of the premixed gas in the main air chamber 8, and because the main air chamber 8 is connected to the main nozzle 14, the premixed gas can be concentrated and accelerated to be discharged from the main nozzle 14, thereby achieving the purpose of increasing the temperature and concentration of the subsequent flame.

[0045] The device is provided with an injection plate 6 and an air equalization plate 9 to separate the cavity into a first chamber and a second chamber 12, and is provided with a guide plate 7 to separate the first chamber into a main air chamber 8 and a secondary air chamber 10. Since the main air chamber 8 has a trapezoidal structure to form a Venturi effect, the rate and concentration of the premixed gas passing from the main air chamber 8 to the outside of the main nozzle 14 can be effectively improved. Accordingly, the purpose of increasing the flame temperature and concentration can be achieved, and the applicability is stronger.

[0046] In addition, by arranging sub-nozzles 15 on both sides of the main nozzle 14, part of the premixed gas can also pass through the gas equalizing plate 9 and the sub-air chamber 10 in sequence to be ejected from the sub-nozzle 15 to cooperate with the main nozzle 14, thereby further increasing the temperature of the flame generated by the device.

[0047] like Figure 2 and Figure 3 As shown, in the embodiment, the guide plate 7 is further defined to better separate the first chamber into a main air chamber 8 capable of accelerating the discharge of the premixed gas from the main nozzle 14 .

[0048] Specifically, two guide plates 7 are provided and are symmetrically arranged.

[0049] Among them, the two guide plates 7 are gradually inclined from top to bottom in the first chamber in a direction away from each other, so as to separate the first chamber into the main air chamber 8 with the trapezoidal structure, and then under the Venturi effect, the flow rate of the premixed gas can be effectively accelerated, thereby achieving the purpose of increasing the temperature of the flame generated subsequently.

[0050] In a further embodiment, the positional relationship between the main nozzle 14 and the auxiliary nozzle 15 is further limited to improve the stability of flame formation, meet the application requirements in both highly overoxygenated and highly underoxygenated states, and improve the scope of application.

[0051] Specifically, the outlet of the main nozzle 14 extends to above the outlet of the auxiliary nozzle 15 and is located inside the cavity, so that the cavity can wrap the outlet positions of the main nozzle 14 and the auxiliary nozzle 15. Accordingly, a mixed gas recirculation zone and a premixed gas recirculation zone are formed between the main nozzle 14 and the opening end face of the cavity and between the auxiliary nozzle 15 and the cavity, respectively. By virtue of the fact that the gas velocity in the recirculation zone is relatively low and the flame is not easily disturbed by external fluids within this area, the flame can maintain a stable combustion state for a long time, thereby achieving the purpose of improving flame stability.

[0052] The jet plate 6 is configured as a convex structure, and the main nozzle 14 is configured in the middle of the jet plate 6, so that a height difference can be formed between the main nozzle 14 and the auxiliary nozzle 15, thereby forming a mixed gas recirculation zone and a premixed gas recirculation zone between the main nozzle 14 and the auxiliary nozzle 15 and the cavity respectively.

[0053] In addition, both sides of the opening of the cavity are provided with raised portions extending in the direction of the axial center line thereof, and the raised portions are located above the auxiliary nozzle 15 to further reduce the interference of the external fluid, thereby being able to better form a premixed gas reflow zone.

[0054] In this embodiment, the main nozzle 14 is configured as a slot-type structure, and the width of the main nozzle 14 can be set to 2 mm-3 mm, thereby increasing the discharge amount of the premixed gas and thus increasing the temperature of the flame formation.

[0055] like Figure 2 and Figure 3 As shown, in this embodiment, the gas equalization hole is further defined to guide the premixed gas in the second chamber 12 to enter the main air chamber 8 and the auxiliary air chamber 10 respectively, so as to complete the supply of premixed gas to the main nozzle 14 and the auxiliary nozzle 15.

[0056] Specifically, the air equalizing holes include a first air supply hole 11 and second air supply holes 13 located on both sides of the first air supply hole 11 .

[0057] The first air supply hole 11 is communicated with the main air chamber 8 to transfer the premixed gas to the main nozzle 14 , and the second air supply hole 13 is communicated with the auxiliary air chamber 10 to transfer the premixed gas to the auxiliary nozzle 15 .

[0058] It should be noted that the first air supply holes 11 and the second air supply holes 13 are both configured as circular spray hole structures. The first air supply holes 11 and the second air supply holes 13 may be configured in multiple rows, and the specific number thereof is not limited here.

[0059] In a further embodiment, the cavity includes a U-shaped shell 3 , a mounting flange 1 and a side blind plate 2 .

[0060] The mounting flange 1 is fixedly mounted on one side of the U-shaped shell 3, and the side blind plate 2 is fixedly mounted on the other side of the U-shaped shell 3, so that a cavity with a top opening is formed between the mounting flange 1, the side blind plate 2 and the U-shaped shell 3, meeting the installation requirements of components such as the jet plate 6, the guide plate 7 and the air equalizing plate 9.

[0061] The device is provided with a mounting flange 1, so that an operator can conveniently mount the burner assembly on an external device.

[0062] In addition, the cavity further comprises a spark plug mounting block 5, and the spark plug mounting block 5 is arranged on the outer wall of the U-shaped shell 3 and is used for mounting a spark plug. This is a prior art and will not be described in detail here.

[0063] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A burner assembly, characterized in that: It includes a cavity with a top opening, an air injection plate, an air distribution plate, an air inlet and a guide plate; The air injection plate and the air equalization plate are sequentially arranged in the cavity from top to bottom, and separate the inner cavity of the cavity into a first cavity and a second cavity; The jet plate is provided with a main nozzle and auxiliary nozzles located on both sides of the main nozzle; The gas equalizing plate is provided with gas equalizing holes connected with the main nozzle and the auxiliary nozzle; The air inlet is arranged at the bottom of the cavity and communicates with the second chamber; The guide plate is disposed in the first chamber, and divides the first chamber into a main air chamber connected to the main nozzle and a secondary air chamber connected to the secondary nozzle; The main air chamber has a trapezoidal structure, and the cross-sectional area of ​​the trapezoidal structure decreases along a direction approaching the main nozzle.

2. The burner assembly according to claim 1, characterized in that There are two guide plates, which are symmetrically arranged; The two guide plates are gradually inclined from top to bottom in the first chamber in a direction away from each other, so as to separate the first chamber into the main air chamber with the trapezoidal structure.

3. The burner assembly according to claim 1, characterized in that The outlet of the main nozzle extends above the outlet of the auxiliary nozzle and is located inside the cavity, so that a mixed gas reflow zone and a premixed gas reflow zone are formed between the main nozzle and the opening end surface of the cavity and between the auxiliary nozzle and the cavity, respectively.

4. The burner assembly according to claim 3, characterized in that The jet plate is configured as a convex structure, and the main nozzle is configured in the middle of the jet plate.

5. The burner assembly according to claim 3, characterized in that Both sides of the opening of the cavity are provided with protrusions extending in the direction of the axial line thereof; The protrusion is located above the auxiliary nozzle.

6. The burner assembly according to claim 1, characterized in that The main nozzle is configured as a slot-type structure.

7. The burner assembly according to claim 1, characterized in that The air equalization hole comprises a first air supply hole and second air supply holes located on both sides of the first air supply hole; The first air supply hole is in communication with the main air chamber; The second air supply hole is communicated with the auxiliary air chamber.

8. The burner assembly according to claim 7, characterized in that The first air supply hole and the second air supply hole are both configured as circular spray hole structures.

9. The burner assembly according to claim 1, characterized in that The cavity includes a U-shaped shell, a mounting flange and a side blind plate; The mounting flange is fixedly mounted on one side of the U-shaped housing; The side blind plate is fixedly mounted on the other side of the U-shaped housing.

10. The burner assembly according to claim 9, characterized in that The cavity also includes a spark plug mounting block; The spark plug mounting block is arranged on the outer wall of the U-shaped housing.