Burner air distribution device and combustion device thereof

Abstract

The utility model relates to the field of combustion devices, in particular to a combustor air distribution device and a combustion device thereof, the air distribution device comprises an air chamber, one side of the air chamber is provided with at least two air distribution ports, the other side of the air chamber is provided with an air inlet, and first air guide walls are connected between the air distribution ports and the air inlet. The first air guide wall is arranged to be inclined relative to the air inlet direction. According to the air distribution device, the first air guide wall is arranged between the air inlet and the air distribution opening of the air distribution device, so that air entering through the air inlet can smoothly enter the air distribution opening along the first air guide wall, the situation that airflow collides with each other in the air chamber and forms a vortex is reduced, air distribution of all the air distribution openings is more uniform, and meanwhile vibration generated in the equipment using process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of combustion devices, in particular to a burner air distribution device and a combustion device thereof. Background Art

[0002] like Figure 1 As shown, the existing air distribution device and the burner connected thereto, the air passes through the air inlet 1, the bellows 2, and the air outlet 3 of the air distribution device in sequence, and then enters the burner. It has been found through practice that the air distribution device has uneven air distribution during use, resulting in incomplete combustion. At the same time, the air distribution device also has the problem of violent vibration, which shortens the service life of the air distribution device. The applicant conducted a CFD simulation of the fluid movement mode of the air duct of the existing air distribution device and found that a vortex was generated at the corner of the original bellows, which caused the problem of uneven air volume distribution between the upper and lower burners and equipment vibration.

[0003] Therefore, a technical solution is currently needed to solve the technical problem that the air distribution device of the burner cannot play a good role in guiding the incoming air, and the air will form a vortex after entering the air distribution device, resulting in uneven air volume distribution between the upper and lower burners and equipment vibration. Utility Model Content

[0004] The utility model aims to overcome the technical problem that the air distribution device of the burner cannot play a good guiding role for the incoming air, and a vortex is formed after the air enters the air distribution device, resulting in uneven air cooling distribution between the upper and lower burners and equipment vibration, and provides a burner air distribution device and a combustion device thereof.

[0005] In a first aspect, the utility model provides a burner air distribution device, comprising an air chamber, wherein at least two air outlets are provided on one side of the air chamber, and an air inlet is provided on the other side, a first air guide wall is connected between the air outlet and the air inlet, and the first air guide wall is arranged to be inclined relative to the air inlet direction.

[0006] The utility model discloses an air distribution device for a burner. When in use, an air supply device sends air into an air chamber through an air inlet, and then the air enters the burner through an air distribution port. Since a first air guide wall is provided between the air inlet and the air distribution port, the air entering through the air inlet can smoothly enter the air distribution port along the first air guide wall, thus avoiding the formation of a vortex in the air chamber. This not only makes the air distribution of each burner more uniform, but also reduces the vibration of the equipment caused by the air supply, thereby improving the safety of the equipment.

[0007] Preferably, the angle between the first wind guide wall and the wind inlet direction is α, 30°≤α≤60°.

[0008] When α is set too large, the first wind guide wall cannot guide the wind and a vortex is easily formed outside the first wind guide wall. When α is set too small, the wind entering the air chamber is easily bounced back into the air chamber under the obstruction of the wind guide plate. Setting α between 30° and 60° can not only achieve a good guiding effect, but also avoid the phenomenon of large-scale rebound of wind encountering the first wind guide wall.

[0009] Preferably, the first air guide wall is configured to be conical, and the small end of the first air guide wall is disposed toward the air inlet.

[0010] The conical first wind guide wall can not only prevent the wind from forming vortices in the wind chamber, but also the wind enters from the small end of the conical first wind guide wall and is discharged from the large end, which can reduce the resistance of the first wind guide wall to the wind and improve the air supply efficiency.

[0011] Preferably, a second air guide wall is connected between the two air outlets, and the second air guide wall is configured to be in a cone shape, with the top of the cone disposed toward the air inlet.

[0012] The second wind guide wall plays a role in dividing the wind, so that the wind entering the wind chamber can flow to both sides of the second wind guide wall. Compared with the original wind guide plate set as a plane, it has a better wind dividing effect and will not cause the incoming wind to rebound.

[0013] Preferably, the cone angle of the second air guiding wall is set to β, 60°≤β≤120°.

[0014] That is, the included angle of the generatrix on both sides of the conical second air guide wall is β, and setting β between 60° and 120° can not only achieve a better wind separation effect, but also prevent the wind colliding with the second air guide wall from rebounding to the air inlet side.

[0015] Preferably, the angle β is set to 90°.

[0016] Setting β to 90° can achieve the best wind separation effect and make the shape of the second air guide wall more regular, which is convenient for manufacturing and installation.

[0017] Preferably, the inner wall of the air inlet is arranged in a funnel shape, and the large end is arranged toward the interior of the air chamber.

[0018] Avoid the air inlet from blocking the incoming wind and improve the air intake efficiency.

[0019] Preferably, the number of the air outlets is two, and the two air outlets are symmetrically arranged on both sides of the air inlet.

[0020] When there are two air outlets, the air supply to two burners can be met at the same time. They are symmetrically arranged on both sides of the air inlet so that the air entering the air inlet can flow evenly to the two air outlets.

[0021] Preferably, the number of the air outlets is at least three, and all the air outlets are arranged in a circular array around the axis of the air inlet.

[0022] When the number of air outlets is more than three, it can satisfy the simultaneous air supply of at least three burners, and the uniform arrangement around the axis of the air inlet can ensure that the wind flows evenly to each air outlet.

[0023] In a second aspect, the utility model provides a combustion device, including a plurality of burners, including a burner air distribution device as described above, wherein the burners are connected to the air distribution ports in a one-to-one correspondence.

[0024] The utility model discloses a combustion device. When in use, the burner is connected to the air distribution port in a one-to-one correspondence, the air supply device is connected to the air inlet, the air supply device sends wind into the wind chamber through the air inlet, and the wind then enters the burner through the air distribution port. As a first air guide wall is provided between the air inlet and the air distribution port, the wind entering through the air inlet can smoothly enter the air distribution port along the first air guide wall, thus avoiding the formation of vortex in the wind chamber. Not only the air distribution of each burner is more uniform, but also the vibration of the equipment caused by the air supply is reduced, thereby improving the safety of the equipment.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The present application sets a first air guide wall between the air inlet and the air outlet of the air distribution device, so that the wind entering through the air inlet can smoothly enter the air outlet along the first air guide wall, reducing the collision and vortex formation of airflow in the air chamber, making the air distribution of each air outlet more uniform, and reducing the vibration generated during the use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an air distribution device in the prior art.

[0028] Figure 2 The utility model is a structural schematic diagram of a burner air distribution device.

[0029] Figure 3 This is a schematic diagram of a burner air distribution device of the utility model with more than three air distribution ports;

[0030] Figure 4 It is a schematic diagram of a combustion device of the utility model;

[0031] Markings in the figure:

[0032] 1-air inlet, 2-wind box, 3-air outlet, 4-wind chamber, 41-air outlet, 42-air inlet, 5-first air guide wall, 6-second air guide wall, 7-burner. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0034] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present utility model.

[0035] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding devices / components / elements are within the error / deviation range, they can still achieve their functions in the solution of the utility model.

[0036] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0037] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0038] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0039] Example 1

[0040] like Figure 2 As shown, a burner air distribution device includes a wind chamber 4, one side of the wind chamber 4 is provided with at least two air outlets 41, and the other side is provided with an air inlet 42, a first air guide wall 5 is connected between the air outlet 41 and the air inlet 42, and the first air guide wall 5 is set to be inclined relative to the air inlet direction.

[0041] When in use, the air supply device sends air into the air chamber 4 through the air inlet 42, and then enters the burner through the air outlet 41. Since the first air guide wall 5 is set between the air inlet 42 and the air outlet 41, the wind entering through the air inlet 42 can smoothly enter the air outlet 41 along the first air guide wall 5, avoiding the formation of vortex in the air chamber 4. Not only can the air distribution of each burner be more uniform, but also the vibration of the equipment caused by air supply is reduced, thereby improving the safety of equipment use.

[0042] First air guide wall 5: The angle between the first air guide wall 5 and the air inlet direction is set to α. Setting α between 30° and 60° can not only achieve a good air guide effect, but also prevent the wind from rebounding in large quantities when encountering the first air guide wall 5. The first air guide wall 5 is set to be conical, with the small end of the first air guide wall 5 facing the air inlet (42) and the large end facing the air outlet 41. The conical first air guide wall 5 can not only prevent the wind from forming a vortex in the air chamber 4, but also the wind enters from the small end of the conical first air guide wall 5 and is discharged from the large end, which can reduce the resistance of the first air guide wall 5 to the wind and improve the air supply efficiency.

[0043] Air inlet 42: The inner wall of the air inlet 42 is configured to be funnel-shaped, with the large end facing the inside of the air chamber 4, so as to avoid blocking the incoming wind and improve the air intake efficiency.

[0044] Air outlets 41: The number of air outlets 41 is set to two, and the two air outlets 41 are symmetrically arranged on both sides of the air inlet 42 to meet the air supply needs of two burners at the same time. They are symmetrically arranged on both sides of the air inlet 42 so that the wind entering the air inlet 42 can flow evenly to the two air outlets 41.

[0045] Example 2

[0046] like Figure 2 As shown, in this embodiment, the difference from Embodiment 1 is that a second air guide wall 6 is connected between the two air outlets 41 , and the second air guide wall 6 is configured to be cone-shaped, and the top of the cone is configured to face the air inlet 42 .

[0047] In this embodiment, the second wind guide wall 6 plays a role in dividing the wind, so that the wind entering the wind chamber 4 can flow to both sides of the second wind guide wall 6. Compared with the original wind guide plate set as a plane, it has a better wind dividing effect and will not cause the incoming wind to rebound.

[0048] Second air guide wall 6: The cone angle of the second air guide wall 6 is set to β, 60°≤β≤120°, which can not only achieve a better wind separation effect, but also prevent the wind that collides with the second air guide wall 6 from rebounding to the side of the air inlet 42; further, setting β to 90° can achieve the best wind separation effect, and at the same time make the shape of the second air guide wall 6 more regular, which is conducive to manufacturing and installation.

[0049] Example 3

[0050] like Figure 3 As shown, in this embodiment, the difference from Embodiment 1 is that the number of the air outlets 41 is at least three, and all of the air outlets 41 are arranged in a circular array around the axis of the air inlet 42 .

[0051] In this embodiment, the number of the air outlets 41 is set to be more than three, which can meet the simultaneous air supply of at least three burners. The uniform arrangement around the axis of the air inlet 42 can ensure that the wind flows evenly to each air outlet 41.

[0052] Example 4

[0053] like Figure 2 and Figure 4 As shown, a combustion device is provided in this embodiment, including a plurality of burners 7, including a burner air distribution device as described in any one of embodiments 1-3, and the burners 7 are connected to the air distribution ports 41 in a one-to-one correspondence.

[0054] When in use, the burner 7 is connected to the air distribution port 41 one by one, and the air supply device is connected to the air inlet 42. The air supply device sends air into the wind chamber 4 through the air inlet 42, and then enters the burner 7 through the air distribution port 41. Since the first air guide wall 6 is provided between the air inlet 42 and the air distribution port 41, the wind entering through the air inlet 42 can smoothly enter the air distribution port 41 along the first air guide wall 5, avoiding the formation of vortex in the wind chamber 4, which not only makes the air distribution of each burner more uniform, but also reduces the vibration of the equipment caused by air supply, thereby improving the safety of equipment use.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A burner air distribution device, characterized in that: The invention comprises an air chamber (4), wherein at least two air outlets (41) are provided on one side of the air chamber (4), and an air inlet (42) is provided on the other side, a first air guide wall (5) is connected between the air outlet (41) and the air inlet (42), and the first air guide wall (5) is arranged in an inclined shape relative to the air inlet direction.

2. A burner air distribution device according to claim 1, characterized in that: The angle between the first wind guide wall (5) and the wind inlet direction is α, 30°≤α≤60°.

3. A burner air distribution device according to claim 1, characterized in that: The first air guide wall (5) is arranged in a cone shape, and the small end of the first air guide wall (5) is arranged towards the air inlet (42).

4. A burner air distribution device according to claim 1, characterized in that: A second air guide wall (6) is connected between the two air distribution ports (41), and the second air guide wall (6) is arranged in a cone shape, with the top of the cone arranged toward the air inlet (42).

5. A burner air distribution device according to claim 4, characterized in that: The cone angle of the second air guide wall (6) is set to β, 60°≤β≤120°.

6. A burner air distribution device according to claim 5, characterized in that: The β is set to 90°.

7. A burner air distribution device according to claim 1, characterized in that: The inner wall of the air inlet (42) is arranged in a funnel shape, with the larger end arranged toward the interior of the air chamber (4).

8. A burner air distribution device according to any one of claims 1 to 7, characterized in that: The number of the air distribution openings (41) is two, and the two air distribution openings (41) are symmetrically arranged on both sides of the air inlet (42).

9. A burner air distribution device according to any one of claims 1 to 7, characterized in that: The number of the air distribution openings (41) is at least three, and all the air distribution openings (41) are arranged in a circular array around the axis of the air inlet (42).

10. A combustion device, comprising a plurality of burners (7), characterized in that: It also comprises a burner air distribution device as claimed in any one of claims 1 to 9, wherein the burner (7) is connected to the air distribution port (41) in a one-to-one correspondence.

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