Gas distribution baffle and combustor thereof

Abstract

The utility model discloses an air distribution baffle plate, which comprises a baffle plate body provided with a ventilation part for air flow to pass through; the partition part is fixedly connected to the bottom of the first end of the baffle body, and the partition part is fixedly connected to the bottom of the second end of the baffle body. The gas distribution baffle is simple in structure, and the problem that the pressure of the cavity of the combustor is not uniform is effectively solved. The utility model further discloses a burner.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to an air distribution baffle and a burner thereof. Background Art

[0002] Existing burners include components such as a burner head, a flame distributor, and a flame cap. Irrational design of the flame distributor's air intake and outlet structures can lead to uneven pressure in the outlet cavity and inconsistent flame lengths during combustion. Some burners incorporate a baffle structure above the flame distributor outlet, or incorporate a baffle above the outlet to redirect the airflow to the sides. However, this can result in severe flame bias and uneven heating during use, resulting in a poor user experience. Summary of the Invention

[0003] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes an air distribution baffle with a simple structure that effectively solves the problem of uneven pressure in the burner cavity. The present invention also provides a burner.

[0004] According to the above-mentioned gas separation baffle, it is realized by the following technical solution:

[0005] A gas separation baffle comprises: a baffle body, on which a ventilation portion for airflow is provided; and a partition portion and / or a dividing portion, wherein the partition portion is fixedly connected to the bottom of the first end of the baffle body, and the dividing portion is fixedly connected to the bottom of the second end of the baffle body.

[0006] In some embodiments, the partition portion includes a lower flange, a split opening is formed at the first end of the baffle body, and a lower flange extending downward and integrally formed with the baffle body is provided on the left and / or right side of the split opening; or the partition portion is a first press profile, which is formed by a partial integral downward stamping of the first end of the baffle body.

[0007] In some embodiments, the number of the lower flanges is two, and the two lower flanges are fitted together or gap-fitted, or the lower ends of the two lower flanges are in contact with each other and the upper ends are gap-fitted.

[0008] In some embodiments, the partition is a second press profile, and the second press profile is formed by integrally stamping a portion of the second end of the baffle body downward.

[0009] In some embodiments, the outlet area of ​​the vent is 1000-1700 mm 2 .

[0010] In some embodiments, the ventilation portion includes a plurality of first air vents, and the plurality of first air vents are circumferentially spaced apart on the baffle body; or the ventilation portion includes a plurality of second air vents, and the plurality of second air vents are circumferentially spaced apart on the baffle body, and a guide plate connected to the top of the baffle body is provided above each second air vent; or the ventilation portion includes a plurality of small air holes, and the baffle body includes a planar section and a ventilation section, and the plurality of small air holes are evenly distributed on the ventilation section.

[0011] In some embodiments, the baffle body is provided with an air-avoiding hole and / or a fixing hole.

[0012] According to the above-mentioned gas separation baffle, it is realized by the following technical solution:

[0013] A burner comprises: a flame divider, provided with an outer ring groove opening upward and a central cavity opening at both upper and lower ends, an air inlet extending downward being provided at the bottom of the flame divider; an outer fire cover, which is provided on the top of the flame divider and is provided with a fire outlet, the outer fire cover and the outer ring groove together enclose an outer ring air cavity; and an air dividing baffle as described above, the air dividing baffle is provided in the outer ring air cavity and divides the outer ring air cavity into a lower cavity and an upper cavity, the lower cavity is respectively connected with the air inlet and the vent, and the upper cavity is respectively connected with the vent and the fire outlet; the partition is provided in the end of the lower cavity away from the air inlet and abuts against the flame divider, the partition is provided in the lower cavity and is located above the air inlet, and the upper end face of the air inlet is divided into left and right parts by the partition.

[0014] In some embodiments, the bottom surface of the outer ring groove includes a connecting plane and two arcuate guide surfaces, and the two arcuate guide surfaces are arranged on the opposite outer sides of the air inlet and are connected to the connecting plane. Each of the arcuate guide surfaces is arranged to bend upward from the air inlet toward the connecting plane; the partition portion abuts against or is gap-fitted with the connecting plane.

[0015] In some embodiments, the diameter of the air inlet is larger than the width of the outer ring groove in the radial direction, and a guide groove is provided on the inner groove wall of the outer ring groove, which is recessed toward the central cavity. The guide groove is respectively connected to the air inlet and the lower cavity.

[0016] In some embodiments, the guide groove is arranged with a larger lower end and a smaller upper end, and / or the upper end of the guide groove is communicated with the upper cavity.

[0017] In some embodiments, the central cavity and the outer ring groove are fixedly connected by at least one connecting arm, a downward extending rib is fixedly provided at the bottom of the connecting arm, and / or a plurality of outward extending bosses are circumferentially spaced at the lower end of the outer wall of the central cavity.

[0018] In some embodiments, a plurality of inner fixing seats and / or a plurality of outer fixing seats are provided in the outer ring groove at intervals. The inner fixing seats are integrally formed with the inner groove wall of the outer ring groove and are detachably connected to the outer fire cover. The outer fixing seats are integrally formed with the outer groove wall of the outer ring groove and are detachably connected to the gas distribution baffle.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The air separation baffle of the present invention solves the problem of uneven pressure in the burner cavity by providing a ventilation portion for air flow to pass through on the baffle body, and provides a partition portion at the bottom of the first end of the baffle body to avoid mutual interference of the air flows, and provides a partition portion at the bottom of the second end of the baffle body to achieve diversion of the air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an exploded view of the burner in Example 1 of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the fire distributor and the gas distributor baffle in Example 1 of the present utility model;

[0023] Figure 3 This is a cross-sectional view of the burner in Example 1 of the present utility model Figure 1 ;

[0024] Figure 4 This is a cross-sectional view of the burner in Example 1 of the present utility model Figure 2 ;

[0025] Figure 5 This is a schematic structural diagram of the burner in Example 1 of the present utility model;

[0026] Figure 6 This is a schematic structural diagram of the gas separation baffle in Example 2 of the present utility model;

[0027] Figure 7 This is a schematic structural diagram of the fire distributor and the gas distributor baffle in Example 2 of the present utility model;

[0028] Figure 8 This is a schematic structural diagram of the gas separation baffle in Example 3 of the present utility model;

[0029] Figure 9 This is a schematic structural diagram of the fire distributor and the gas distributor baffle in Example 3 of the present utility model;

[0030] Figure 10 This is a schematic structural diagram of the gas separation baffle in Example 4 of the present utility model;

[0031] Figure 11 It is a structural diagram of the fire distributor and the gas distribution baffle in Example 4 of the present utility model.

[0032] In the figure: 1-air dividing baffle, 11-baffle body, 1101-plane section, 1102-vent section, 111-dividing opening, 112-first vent, 113-second vent, 114-guide plate, 115-small air hole, 116-avoidance hole, 117-fixing hole, 12-partitioning portion, 13-partitioning portion;

[0033] 2-ignition distributor, 21-outer ring groove, 211-arc-shaped guide surface, 212-connecting plane, 213-avoidance hole, 22-center cavity, 231-air inlet, 232-guide groove, 24-connecting arm, 241-convex rib, 25-boss, 26-secondary air channel, 271-inner fixing seat, 272-outer fixing seat;

[0034] 3-external fire cover, 31-top fire hole, 32-side wall fire hole;

[0035] 41-lower cavity, 42-upper cavity. DETAILED DESCRIPTION

[0036] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific embodiments of the present invention or equivalent replacements of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed in the present invention.

[0037] Example 1

[0038] refer to Figure 1-2 , this embodiment provides an air-dividing baffle, and the air-dividing baffle 1 includes a baffle body 11, a partition portion 12 and / or a partition portion 13. In this embodiment, the air-dividing baffle 1 includes a baffle body 11 and a partition portion 12, wherein the baffle body 11 is an annular structure, and a ventilation portion for air flow to pass through is provided on the baffle body 11, so that the air-dividing baffle 1 can solve the problem of uneven pressure in the burner cavity. The partition portion 12 is fixedly connected to the bottom of the first end of the baffle body 11, and is used to separate the airflow below the air-dividing baffle 1 into two parts to avoid mutual interference between the airflows.

[0039] In this embodiment, the partition 13 includes a lower flange. A split opening 111 is formed at the first end of the baffle body 11, so that the baffle body 11 has two adjacent free ends. Lower flanges extending downward and integrally formed with the baffle body 11 are provided on the left and right sides of the split opening 111. That is, the two free ends of the baffle body 11 are bent downward to form lower flanges. In this case, the two lower flanges can fit together to form a "1" shape, or they can fit together with a gap to form an "11" shape. Of course, the lower ends of the two lower flanges can also abut each other and fit together with a gap at the upper ends to form a "V" or "U" shape.

[0040] In other embodiments, one of the lower flanges may be omitted, that is, a lower flange extending downward and integrally formed with the baffle body 11 may be provided only on the left or right side of the split opening 111. Of course, the split opening 111 may also be omitted. In this case, the partition portion 12 is a first press-formed portion formed by integrally stamping downwardly from a portion of the first end of the baffle body 11.

[0041] Furthermore, the outlet area of ​​the ventilation part is 1000-1700mm 2 The ventilation portion includes a plurality of first ventilation openings 112, which are circumferentially spaced apart on the baffle body 11. In this embodiment, the number of the first ventilation openings 112 is four, and the four first ventilation openings 112 are evenly spaced along the circumferential direction of the baffle body 11. The total outlet area of ​​all the first ventilation openings 112 is 1640 or 1074 mm. 2 .

[0042] Furthermore, the baffle body 11 is provided with a clearance hole 116 and / or a fixing hole 117. In this embodiment, there are two clearance holes 116, which are spaced apart and arranged opposite each other on the radially inner side of the baffle body 11; and there are two fixing holes 117, which are spaced apart and arranged radially outer side of the baffle body 11.

[0043] refer to Figure 1-5This embodiment also provides a burner, which includes a ignition divider 2, an outer fire cover 3 and an air distribution baffle as described above. The ignition divider 2 is provided with an outer ring groove 21 opening upward and a central cavity 22 opening at both ends. The outer ring groove 21 is located on the periphery of the central cavity 21. An air inlet 231 extending downward is provided at the bottom of the ignition divider 2 at a position corresponding to the outer ring groove 2. The air inlet 231 is connected to the outer ring groove 21. The outer fire cover 3 is provided on the top of the ignition divider 2 and is provided with a fire outlet. In this embodiment, the outer fire cover 3 is detachably connected to the ignition divider 2 as a whole and can be detachably connected by fasteners or a snap-on structure. The fire outlet includes a plurality of top fire holes 31 and a plurality of side wall fire holes 32. The plurality of top fire holes 31 are circumferentially spaced apart on the top of the outer fire cover 3, and the plurality of side wall fire holes 32 are circumferentially spaced apart on the outer peripheral wall of the outer fire cover 3.

[0044] The outer fire cover 3 and the outer ring groove 21 together enclose an outer ring air cavity. The air separation baffle 1 is disposed within the outer ring air cavity and divides the outer ring air cavity into a lower cavity 41 and an upper cavity 42. The lower cavity 41 is respectively connected to the air inlet 231 and the vent, while the upper cavity 42 is respectively connected to the vent and the fire outlet. The partition portion 12 is disposed in the end of the lower cavity 41 away from the air inlet 231 and abuts against the ignition divider 2. In this embodiment, the air separation baffle 1 is detachably connected to the outer fire cover 3 or the ignition divider 2 as a whole, and can be detachably connected by fasteners or a snap-fit ​​structure. The distance between the bottom surface of the baffle body 11 and the upper end surface of the air outlet 231 is 12-12.8 mm.

[0045] It can be seen that the outer ring air cavity is separated into a double layer by the air dividing baffle 1, and a ventilation part is designed on the air dividing baffle 1 to make the air pressure in the upper and lower cavities uniform, so that the pressure of each fire hole in the outer fire cover 3 is uniform, effectively solving the problems of uneven cavity pressure, flame length and uneven heating; the lower cavity 41 is divided into two parts by the partition part 12 on the air dividing baffle 1 to isolate the airflow on both sides and avoid mutual interference between the airflows.

[0046] refer to Figure 1-4 The bottom surface of the outer ring groove 21 includes a connecting plane 212 and two arcuate guide surfaces 211. The two arcuate guide surfaces 211 are arranged on opposite sides of the air inlet 231 and are connected to the common connecting plane 212. Each arcuate guide surface 211 is arranged to curve upward from the air inlet 231 toward the connecting plane 212, and the partition portion 12 abuts or has a clearance fit with the connecting plane 212. As a result, the air inlet 231 of the ignition divider 2 has arcuate guide surfaces on both sides, increasing the area on both sides of the air inlet 23. After the air divider baffle 1 is installed, the air flow can effectively and evenly divert the gas, making the gas pressure in the upper and lower cavities consistent or uniform, effectively solving the problem of gas outlet resistance in the burner cavity.

[0047] refer to Figure 3-4The diameter of the air inlet 231 is greater than the radial width of the outer ring groove 21. In this embodiment, the diameter of the air inlet 231 is preferably 27.2 mm, and the height is 8-9.2 mm. A guide groove 232 is provided on the inner groove wall of the outer ring groove 21, which is recessed toward the central cavity 22. In this embodiment, the guide groove 232 is arranged with a larger lower end and a smaller upper end. The larger end of the guide groove 232 is connected to the air inlet 231 and the lower cavity 41, respectively, while the smaller end is connected to the upper cavity 42. This increases the unit air intake area of ​​the lower cavity 41 while facilitating the direct upward diversion of a small portion of the gas into the upper cavity, allowing the airflow to quickly fill the upper cavity.

[0048] refer to Figure 1 or Figure 4 Furthermore, the central cavity 22 and the outer ring groove 21 are fixedly connected by at least one connecting arm 24. In this embodiment, there are two connecting arms 24, and a secondary air channel 26 for secondary air to pass through is formed between the two connecting arms 24. A downwardly extending rib 241 is fixedly provided at the bottom of the connecting arm 24 to strengthen the strength of the connecting arm 24 while allowing the ignition source 2 to form a surface contact with the burner head or base, thereby facilitating the improvement of the reliability of the installation of the ignition source. In addition, a plurality of outwardly extending bosses 25 are circumferentially spaced apart at the lower end of the outer wall of the central cavity 22. The free ends of the bosses 25 are clearance-fitted with the outer ring groove 21 to avoid affecting the secondary air supply due to the setting of the bosses 25. In this embodiment, the bosses 25 are used to strengthen the strength of the ignition source 2 while also allowing the ignition source 2 to form a surface contact with the burner head or base, thereby further improving the reliability of the installation of the ignition source.

[0049] refer to Figure 1 or Figure 4 Furthermore, multiple inner fixing seats 271 and / or multiple outer fixing seats 272 are spaced apart within the outer ring groove 21. The inner fixing seats 271 are integrally formed with the inner groove wall of the outer ring groove 21 and are removably connected to the outer flame cover 3. The outer fixing seats 272 are integrally formed with the outer groove wall of the outer ring groove 21 and are removably connected to the gas distribution baffle 1. A clearance hole 213 is provided at the bottom of the ignition distributor 2, corresponding to the inner fixing seats 271, to allow fasteners (such as screws) to pass through and to reduce the length of the fasteners.

[0050] Example 2

[0051] refer to Figure 6-7This embodiment differs from Example 1 in that the air-dividing baffle 1 further includes a partition 13, which is fixedly connected to the bottom of the second end of the baffle body 11 and is used to divert the airflow flowing upward from the air inlet of the ignition divider, so that the diverted airflow flows in different directions. When the air-dividing baffle 1 is installed between the ignition divider 2 and the outer fire cover, the partition 13 of the air-dividing baffle 1 is disposed within the lower cavity 41 and above the air inlet 231. At this time, the upper end surface of the air inlet 231 is divided into left and right parts by the partition 13, thereby diverting the airflow flowing upward from the air inlet 231.

[0052] In this embodiment, the partition 13 is a second press profile, which is formed by integrally stamping a portion of the second end of the baffle body 11 downward. The second press profile can be in any of the following shapes: "1", "V" or "U".

[0053] It is particularly noted that in other embodiments, the partition portion 12 in the gas separation baffle 1 may be omitted.

[0054] Example 3

[0055] refer to Figure 8-9 The difference between this embodiment and embodiment 1 is that the specific structure of the ventilation part is different. The ventilation part includes a plurality of second ventilation openings 113, which are arranged on the baffle body 11 at intervals in the circumferential direction. In this embodiment, the total outlet area of ​​all the second ventilation openings 113 is 1534mm 2 A guide plate 114 connected to the top of the baffle body 11 is provided above each second vent 113 to form a louver hole. In this embodiment, the guide plate 114 is integrally formed with the baffle body 11 and is used to guide the airflow out of the second vent 113 to flow in a counterclockwise or clockwise direction.

[0056] It can be seen that by designing the second air vents 113 and the guide plates 114 arranged in a one-to-one correspondence on the air separation baffle 1, the air separation baffle 1 has a louver structure, thereby allowing the air flow to flow into the second cavity of the burner in a clockwise or counterclockwise direction.

[0057] Example 4

[0058] refer to Figure 10-11 The difference between this embodiment and embodiment 1 lies in the specific structure of the ventilation portion. The ventilation portion includes a plurality of small air holes 114. The baffle body 11 includes a flat section 1101 and a ventilation section 1102. In this embodiment, the flat section 1101 is located directly above the air inlet 31 of the ignition distributor 2. The ventilation section 1102 is provided with a plurality of small air holes 114. The total outlet area of ​​all the small air holes 114 is 1078 mm. 2 .

[0059] It can be seen that by designing dense small air holes 114 on the air distribution baffle 1, the air distribution is made more uniform, which effectively solves the problems of uneven cavity pressure, flame length and uneven heating, and improves the user experience.

[0060] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A gas distribution baffle, characterized in that: include: A baffle body (11), wherein a vent is provided on the baffle body (11) for air flow to pass through; A partition portion (12) and / or a separator portion (13), wherein the partition portion (12) is fixedly connected to the bottom of the first end of the baffle body (11), and the separator portion (13) is fixedly connected to the bottom of the second end of the baffle body (11).

2. The gas separation baffle according to claim 1, characterized in that: The partition portion (12) includes a lower flange, a split opening (111) is formed at the first end of the baffle body (11), and a lower flange extending downward and integrally formed with the baffle body (11) is provided on the left and / or right side of the split opening (111); or The partition portion (12) is a first press-formed portion, which is formed by integrally punching a portion of the first end of the baffle body (11) downward.

3. The gas separation baffle according to claim 2, characterized in that: There are two lower flanges, and the two lower flanges are fitted together or have a clearance fit, or the lower ends of the two lower flanges are in contact with each other and the upper ends have a clearance fit.

4. The gas separation baffle according to claim 1, characterized in that: The partition (13) is a second pressed profile, and the second pressed profile is formed by integrally punching downward a portion of the second end of the baffle body (11).

5. The gas separation baffle according to claim 1, characterized in that: The outlet area of ​​the ventilation part is 1000~1700mm 2 .

6. The gas separation baffle according to claim 1 or 5, characterized in that: The vent portion comprises a plurality of first vents (112), and the plurality of first vents (112) are circumferentially spaced apart and arranged on the baffle body (11); or The vent portion comprises a plurality of second vents (113), the plurality of second vents (113) being circumferentially spaced apart and arranged on the baffle body (11), and a guide plate (114) connected to the top of the baffle body (11) being provided above each second vent (113); or The ventilation portion includes a plurality of small air holes (114), the baffle body (11) includes a plane section (1101) and a ventilation section (1102), and the plurality of small air holes (114) are evenly distributed on the ventilation section (1102).

7. The gas separation baffle according to claim 1, characterized in that: The baffle body (11) is provided with a clearance hole (116) and / or a fixing hole (117).

8. A burner, characterized in that: include: The fire distributor (2) is provided with an outer ring groove (21) opening upward and a central cavity (22) opening at both ends, and an air inlet (231) extending downward is provided at the bottom of the fire distributor (2); An outer fire cover (3) is arranged on the top of the fire distributor (2) and is provided with a fire outlet hole. The outer fire cover (3) and the outer ring groove (21) are enclosed together to form an outer ring air cavity; as well as An air dividing baffle according to any one of claims 1 to 7, wherein the air dividing baffle is arranged in the outer ring air cavity and the outer ring air cavity is divided into a lower cavity (41) and an upper cavity (42), the lower cavity (41) is respectively connected to the air inlet (231) and the vent, and the upper cavity (42) is respectively connected to the vent and the fire hole. The partition portion (12) is arranged in one end of the lower cavity (41) away from the air inlet (231) and abuts against the ignition divider (2); the partition portion (13) is arranged in the lower cavity (41) and is located above the air inlet (231); the upper end surface of the air inlet (231) is divided into left and right parts by the partition portion (13).

9. A burner according to claim 8, characterized in that: The bottom surface of the outer ring groove (21) includes a connecting plane (212) and two arc-shaped guide surfaces (211). The two arc-shaped guide surfaces (211) are arranged on two opposite outer sides of the air inlet (231) and are connected to the connecting plane (212). Each of the arc-shaped guide surfaces (211) is arranged to bend upward from the air inlet (231) toward the connecting plane (212); the partition portion (12) is in contact with or clearance-fitted with the connecting plane (212).

10. A burner according to claim 8, characterized in that: The diameter of the air inlet (231) is greater than the width of the outer ring groove (21) in the radial direction. A guide groove (232) recessed toward the central cavity (22) is provided on the inner groove wall of the outer ring groove (21). The guide groove (232) is respectively connected to the air inlet (231) and the lower cavity (41).

11. A burner according to claim 10, characterized in that: The guide groove (232) is arranged with a larger lower end and a smaller upper end, and / or the upper end of the guide groove (232) is communicated with the upper cavity (42).

12. A burner according to claim 8, characterized in that: The central cavity (22) is fixedly connected to the outer ring groove (21) via at least one connecting arm (24), a convex rib (241) extending downward is fixedly provided at the bottom of the connecting arm (24), and / or a plurality of outwardly extending bosses (25) are circumferentially spaced apart at the lower end of the outer side wall of the central cavity (22).

13. The burner according to claim 8, characterized in that: A plurality of inner fixing seats (271) and / or a plurality of outer fixing seats (272) are provided in the outer ring groove (21) at intervals. The inner fixing seats (271) are integrally formed with the inner groove wall surface of the outer ring groove (21) and are detachably connected to the outer fire cover (3). The outer fixing seats (272) are integrally formed with the outer groove wall surface of the outer ring groove (21) and are detachably connected to the gas distribution baffle.

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