Fire distributor and upper air inlet burner thereof

Abstract

The distributor comprises a distributor body and an annular air cavity with an upward opening, the annular air cavity comprises a pressure stabilizing cavity and a mixing cavity which are communicated with each other, an injection pipe is arranged at the bottom of the distributor body, and an outlet of the injection pipe is communicated with the pressure stabilizing cavity; the gas blocking piece is arranged above the pressure stabilizing cavity, and the radial inner end of the gas blocking piece is connected with the fire distributor body. The distributor is simple in structure, and the problems that gas pressure distribution is not uniform, and flames are not uniform in length are solved. The utility model further provides an upper air inlet burner.

Description

Technical Field

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

[0002] The pressure distribution in the mixing chamber of the existing upper air inlet single nozzle burner is uneven, the air flow speed at the ejector outlet is too fast, and the air flow is directly ejected from the outlet and enters the fire hole of the outer fire cover, resulting in the flame at the air outlet being elongated, the flames sticking together, the secondary air replenishment between the flames being difficult, and the CO content in the flue gas exceeding the standard. Summary of the invention

[0003] The utility model aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the utility model provides a flame distributor with a simple structure to solve the problems of uneven gas pressure distribution and uneven flame length. The utility model also provides an upper air inlet burner.

[0004] According to the above-mentioned fire distributor, it is realized by the following technical solution:

[0005] A fire divider comprises: a fire divider body having an annular air cavity opening upward, the annular air cavity comprising a pressure stabilizing cavity and a mixing cavity connected to each other, an ejector tube is provided at the bottom of the fire divider body, the outlet of the ejector tube is connected to the pressure stabilizing cavity; and an air baffle plate, which is arranged above the pressure stabilizing cavity and has a radial inner end connected to the fire divider body.

[0006] In some embodiments, a convex edge extending inward and having a positioning hole is fixedly provided at the radial inner end of the air baffle, and a positioning column extending upward is fixedly provided at a position on the top of the ignition divider body corresponding to the positioning hole, and the positioning column is plugged into the positioning hole.

[0007] In some embodiments, a groove facing upward and opening toward the air baffle is provided on the top of the fire divider body, the positioning column is disposed in the groove and arranged close to the convex edge, and the convex edge is inserted in the groove; and / or a limiting boss extending outward is provided on the periphery of the lower end of the positioning column, the convex edge is mounted outside the positioning column and abuts against the top of the limiting boss.

[0008] In some embodiments, the bottom surface of the groove is arranged with one end close to the air baffle being higher and the other end being lower, and the groove passes through the central axis of the ignition divider body.

[0009] In some embodiments, a support platform is provided on one side of the top of the ignition divider body close to the pressure stabilizing chamber, and the radial inner end of the air baffle is in contact with the top of the support platform.

[0010] In some embodiments, the pressure stabilizing chamber has a trapezoidal structure, and triangular or trapezoidal gentle slopes are formed on the left and right sides of the pressure stabilizing chamber. The gentle slopes are inclined or curved from top to bottom and toward the outside of the pressure stabilizing chamber, and the gentle slopes are connected to the inner wall of the mixing chamber through an arc-shaped transition surface.

[0011] In some embodiments, the flame divider body is in the shape of a truncated cone with a larger lower end and a smaller upper end, and the vertical cross-section of the mixing chamber is in the shape of a "V".

[0012] In some embodiments, the ejector tube is arranged transversely or obliquely, and the ejector tube passes through the central axis of the ignition divider body, and a clearance position is provided at the bottom of the ignition divider body corresponding to the inlet of the ejector tube.

[0013] In some embodiments, a limiting groove extending downward and opening downward is fixedly provided at the bottom of the ejector tube.

[0014] In some embodiments, a plurality of legs extending downward and located on two relatively outer sides of the ejector tube are fixedly provided at the bottom of the flame divider body, and an air intake passage for secondary air to pass through is formed between adjacent legs.

[0015] According to the above-mentioned upward air inlet burner, it is realized by the following technical solution:

[0016] A top-inlet burner, including a flame divider as described above, further includes: a fire cover, which is arranged on the top of the flame divider body, an air mixing chamber is formed between the fire cover and the flame divider body, the air baffle is arranged in the air mixing chamber and its radial outer end abuts or is gap-fitted with the outer annular wall of the fire cover; and / or a base assembly, which is arranged at the bottom of the flame divider body and abuts or is plugged in with the flame divider body.

[0017] In some embodiments, a positioning structure is provided between the base and the fire divider body, and / or a connecting portion extending downward and located in the gas mixing chamber is fixedly provided on the top of the fire cover, and the connecting portion is detachably connected to the fire divider body.

[0018] In some embodiments, an ignition assembly is further included, wherein a mounting platform extending outward is fixedly provided on the top of the base assembly, the ignition assembly is arranged outside the ignition distributor and the fire cover, and the lower end of the ignition assembly is detachably mounted on the free end of the mounting platform.

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

[0020] 1. The utility model of the fire distributor, by arranging an air baffle above the pressure-stabilizing chamber of the fire distributor body, allows the mixed gas to flow from both sides of the pressure-stabilizing chamber into the mixing chamber for further mixing, reduces the flow rate of the mixed gas, and prevents the mixed gas from flowing out from the top of the pressure-stabilizing chamber so as to flow directly into the fire hole of the fire cover, prevents the gas flow rate at the outlet from being too fast, and solves the problem of uneven gas pressure distribution and uneven flame length;

[0021] 2. By designing the pressure stabilizing chamber into a trapezoidal structure, and designing the left and right sides of the pressure stabilizing chamber into triangular or trapezoidal gentle slopes, the gentle slopes are arranged from top to bottom and inclined or curved toward the outside of the pressure stabilizing chamber, and the gentle slopes are connected to the inner wall of the mixing chamber through an arc-shaped transition surface, which is conducive to improving the uniformity of the mixed gas. After the mixed gas is decelerated and further mixed in the pressure stabilizing chamber, it flows into the mixing chamber from the gentle slope and the arc-shaped transition surface in sequence, which is conducive to reducing the resistance loss in the flow process;

[0022] 3. By setting a limit groove at the bottom of the ejector tube of the ignition distributor body, it can not only prevent the ignition distributor from rotating circumferentially relative to the base assembly, but also facilitate the center of the ejector tube to be concentric with the center of the nozzle of the base assembly, ensuring full combustion of the gas, improving the primary air coefficient, and reducing harmful gas emissions;

[0023] 4. By arranging a support foot located outside the ejector tube at the bottom of the ignition distributor body, the support foot is in contact with the top of the base assembly, which is conducive to maintaining the stability of the ignition distributor after installation and preventing shaking when pressing the burner fire cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded view of the fire distributor in the embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the fire distributor in the embodiment of the utility model;

[0026] Figure 3 It is a cross-sectional view of the fire distributor in the embodiment of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the fire distributor body in the embodiment of the utility model;

[0028] Figure 5 This is a schematic structural diagram of an upper air inlet burner in an embodiment of the utility model;

[0029] Figure 6 is a cross-sectional view of an upper air inlet burner in an embodiment of the utility model;

[0030] Figure 7 It is a structural schematic diagram of the base assembly in an embodiment of the utility model.

[0031] In the figure: 1-fire distributor body, 101-gentle slope surface, 102-arc transition surface, 103-inner cavity wall, 111-pressure stabilizing cavity, 112-mixing cavity, 12-injection tube, 13-positioning column, 131-limiting boss, 14-groove, 15-fixing hole, 16-support platform, 17-avoiding position, 18-limiting groove, 19-support foot, 191-inlet channel; 2-air baffle, 21-convex edge, 211-positioning hole; 3-fire cover, 31-mixing chamber, 32-fire hole, 33-connecting part, 34-brim; 4-base assembly, 41-positioning boss, 42-mounting platform, 43-gas outlet seat, 45-nozzle, 46-annular step, 47-lug; 5-ignition assembly. DETAILED DESCRIPTION

[0032] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0033] Example 1

[0034] refer to Figure 1-4 The present embodiment provides a fire divider, which includes a fire divider body 1 and an air baffle 2, wherein the fire divider body 1 has an annular air cavity (not shown) opening upward, the annular air cavity includes a pressure stabilizing cavity 111 and a mixing cavity 112, the pressure stabilizing cavity 111 and the mixing cavity 112 are connected end to end and communicated. An ejector tube 12 is integrally formed at the bottom of the fire divider body 1, and the outlet of the ejector tube 12 is communicated with the pressure stabilizing cavity 111. The air baffle 2 is arranged above the pressure-stabilizing chamber 111, and the radial inner end of the air baffle 2 is connected to the ignition divider body 1, and a gap is left between the radial outer end and the outer annular wall of the ignition divider body 1, so that the outer annular wall of the fire cover can be inserted into the gap. When the outer annular wall of the fire cover is inserted into the gap, the radial outer end of the air baffle 2 abuts against or has a gap with the outer annular wall of the fire cover, and the gap is less than 1 mm. In this way, the mixed gas can be prevented from directly entering the fire hole of the fire cover from the pressure-stabilizing chamber 111 upward, so that the mixed gas can only flow into the mixing chamber 112 from both sides of the pressure-stabilizing chamber 111 for further mixing, thereby reducing the flow rate of the mixed gas, preventing the gas flow rate at the outlet of the injector tube 12 from being too fast, and solving the problems of uneven gas pressure distribution and uneven flame length.

[0035] refer to Figure 1-3Specifically, a flange 21 extending toward the central axis of the fire divider body 1 is integrally formed at the radial inner end of the air baffle 2, and a positioning hole 2111 is provided on the flange 21. Correspondingly, a positioning column 13 extending upward is integrally formed at the position corresponding to the positioning hole 211 on the top of the fire divider body 1, and the positioning column 13 is plugged in with the positioning hole 211. In this way, the air baffle 2 is fixed above the pressure stabilizing chamber 111 through the cooperation between the positioning column and the positioning hole of the flange. More specifically, a limiting boss 131 extending outward is integrally formed on the periphery of the lower end of the positioning column 13, and the flange 21 is sleeved outside the positioning column 13 and abuts against the top of the limiting boss 131 to limit the installation of the flange 21.

[0036] Specifically, a groove 14 is provided on the top of the fire divider body 1, which is upward and opens toward the air baffle 2. The positioning column 13 is arranged in the groove 14 and is arranged close to the convex edge 21. The convex edge 21 is inserted in the groove 14. In this way, the convex edge and the groove are plugged together to prevent the air baffle 2 from rotating relative to the positioning column 13 and shifting, ensuring that the air baffle is always located above the pressure stabilizing chamber. More specifically, the bottom surface of the groove 14 is arranged with one end close to the air baffle 2 being high and the other end being low, and the groove 14 passes through the central axis of the fire divider body 1. In this way, it is convenient to save materials and facilitate the processing and demoulding of the ejector tube 12 of the fire divider body.

[0037] Specifically, a support platform 16 is provided on one side of the top of the ignition divider body 1 near the pressure stabilizing chamber 111. The support platform 16 is located between the flame stabilizing chamber 11 and the groove 14 and is used to reliably support the air baffle 2. At this time, the support platform 16 and the bottom surface of the groove 14 are enclosed to form a "T" shape. The radial inner end of the air baffle 2 abuts against the top of the support platform 16, so that the installation of the air baffle is more stable and reliable.

[0038] refer to Figure 1-3 In this embodiment, the fire divider body 1 is in the shape of a truncated cone with a large lower end and a small upper end. In this way, the smaller surface on the top of the fire divider body 1 is used to install the fire cover, which is beneficial to reducing the diameter of the fire cover, so that the flame is gathered at the bottom of the pot, and the heating efficiency is improved; and the larger surface at the bottom of the fire divider body 1 is used to cover the air outlet seat of the base assembly and the screws of the mounting hole, which is beneficial to prevent the soup overflowing from the pot from flowing into the nozzle, clogging the nozzle hole and corroding the screws.

[0039] Specifically, the pressure stabilizing chamber 111 is a trapezoidal structure with a small lower end and a large upper end, so that the mixed gas is decelerated and further mixed in the pressure stabilizing chamber, which is beneficial to improving the uniformity of the mixed gas. A triangular or trapezoidal gentle slope surface 101 is formed on the left and right sides of the pressure stabilizing chamber 111. The gentle slope surface 101 is arranged from top to bottom and tilted or curved toward the outside of the pressure stabilizing chamber 111, and the gentle slope surface 101 is connected to the inner cavity wall surface 103 of the annular cavity through an arc-shaped transition surface 102. In this way, after the mixed gas is decelerated and further mixed in the pressure stabilizing chamber, it flows into the mixing chamber 112 from the left and right sides in sequence through the gentle slope surface 101 and the arc-shaped transition surface 102. The gentle flow of the gentle slope surface is beneficial to reducing the resistance loss in the flow process.

[0040] The mixing chamber 112 is arranged to be inclined from top to bottom and toward the central axis of the fire distributor body 1, and the vertical cross-section of the mixing chamber 112 is in a "V" shape to guide the mixed gas to flow upward. In addition, two fixing holes 15 are provided on the top of the fire distributor body 1, which are located on the opposite sides of the groove 14. The fixing holes 15 are used for fasteners to pass through, so that the fasteners pass through the fixing holes and are fastened to the connecting part of the fire cover, thereby realizing that the fire cover can be detachably installed on the top of the fire distributor body 1.

[0041] refer to Figure 3-4 The ejector tube 12 is arranged obliquely in the vertical direction. Of course, the ejector tube 12 can also be designed to be arranged horizontally in the horizontal direction. The ejector tube 12 passes through the central axis of the ignition divider body 1 and is located directly below the groove 14. A clearance position 17 is provided at the bottom of the ignition divider body 1 at a position corresponding to the inlet of the ejector tube 12. The clearance position 17 is used to reserve installation space for the air outlet seat of the base assembly.

[0042] Specifically, a concave cavity (not shown in the figure) that is concave upward and open downward is provided at the center of the bottom of the ignition divider body 1, and at least part of the ejector tube 12 is arranged in the concave cavity, so as to reduce the thickness of the ignition divider body 1 in the vertical direction and reduce the occupied space. More specifically, a limiting groove 18 that extends downward and opens downward is integrally formed at the bottom of the ejector tube 12, and the linear shape of the limiting groove 18 is any one of a waist-shaped hole, a single flat hole, a double flat hole, an ellipse or a polygon. The limiting groove 18 is used to cooperate with the positioning boss of the base assembly to prevent the ignition divider from rotating relative to the base assembly, and is conducive to the center of the ejector tube 12 and the nozzle center of the base assembly being in a concentric position, ensuring full combustion of the gas, improving the primary air coefficient, and reducing the emission of harmful gases.

[0043] refer to Figure 3-4A plurality of legs 19 extending downward and located on the two opposite outer sides of the ejector tube 12 are fixedly provided at the bottom of the ignition divider body 1. In this embodiment, two legs 19 located in the concave cavity are respectively provided on the two opposite outer sides of the ejector tube 12. Each leg 19 is arc-shaped, and an air intake channel 191 for secondary air to pass through is formed between adjacent legs 19. In this way, the four legs are in contact with the top of the base assembly, which is conducive to maintaining the stability of the ignition divider after installation and preventing shaking when pressing the burner fire cover, while not affecting the secondary air replenishment described in the combustion. More specifically, outwardly convex arc-shaped reinforcing ribs (not shown in the figure) are respectively provided on the two opposite outer sides of the ejector tube 12. The opposite ends of the arc-shaped reinforcing ribs are respectively integrally formed with the opposite ends of the ejector tube 12. A fixing hole 15 is provided between the ejector tube 12 and the arc-shaped reinforcing ribs. Legs 19 extending downward are respectively integrally formed at the opposite ends of the bottom of each arc-shaped reinforcing rib.

[0044] Example 2

[0045] refer to Figure 5-6 The present embodiment provides an upper air inlet burner, including a flame divider as described in Embodiment 1, and also including a fire cover 3 and / or a base assembly 4, wherein the fire cover 3 is disposed on the top of the flame divider body 1 and is detachably connected to the flame divider body 1, and an air mixing chamber 31 is formed between the fire cover 3 and the flame divider body 1, and the air mixing chamber 31 is connected to the annular air cavity, and in addition, a plurality of fire holes 32 are arranged at intervals on the peripheral wall of the fire cover 3, and the fire holes 32 are connected to the air mixing chamber. The air baffle 2 is disposed in the air mixing chamber 31, and the radial outer end of the air baffle 2 abuts against or has a gap fit with the outer ring wall of the fire cover 3, and the gap is less than 1mm, so that the mixed gas can be prevented from directly entering the fire hole of the fire cover from the pressure stabilizing chamber 111 upward, thereby preventing the gas flow rate at the outlet of the ejector tube 12 from being too fast, and solving the problems of uneven gas pressure distribution and uneven flame length.

[0046] Specifically, two connecting parts 33 extending downward and located in the gas mixing chamber 31 are fixedly provided on the top of the fire cover 3. The two connecting parts 33 are arranged one by one with the two fixing holes 15 on the top of the igniter body 1. When installed, the two connecting parts 33 are respectively against the top of the igniter body 1, and fasteners (such as screws) are used to pass through the fixing holes 15 from bottom to top and then fastened to the connecting parts 33, so that the fire cover 3 and the igniter body 1 can be detachably connected as a whole to form a burner head. In addition, a convex brim 34 is integrally formed on the upper end of the outer wall of the fire cover 3. The brim 34 is used to protect the discharge part of the ignition component and prevent the soup after overflowing from falling into the discharge part of the ignition component and affecting the ignition performance.

[0047] refer to Figure 5-7, the base assembly 4 is arranged at the bottom of the igniter body 1, and the top of the base assembly 4 is respectively in contact with each leg 19 of the igniter body 1. A positioning structure (not shown in the figure) is provided between the base and the igniter body 1. Specifically, the positioning structure includes a limiting groove 18 and a positioning boss 41. The limiting groove 18 is integrally formed and arranged at the bottom of the ejector tube 12 of the igniter body 1. The positioning boss 41 is integrally formed and arranged at the center position of the top of the base assembly 4. The positioning boss 41 extends upward and is inserted into the limiting groove 18, which is conducive to the rapid positioning of the installation of the igniter. More specifically, the positioning boss 41 and the limiting groove 18 are both waist-shaped structures, and of course, they can also be flat, elliptical or polygonal structures to prevent the igniter from rotating left and right after being installed on the base assembly 4, and it is conducive to the center of the ejector tube 12 and the nozzle center of the base assembly 4 to be in a concentric position, ensuring that the gas burns fully, improving the primary air coefficient, and reducing harmful gas emissions.

[0048] Specifically, a mounting platform 42 extending outward is integrally formed on the top of the base assembly 4, and the mounting platform 42 includes a fixed end and a free end connected in a "Z" shape, and the free end is integrally formed with the base body of the base assembly 4 through the fixed end. The ignition assembly 5 is arranged outside the ignition distributor and the fire cover 3, and the lower end of the ignition assembly 5 is detachably mounted on the free end of the mounting platform 42.

[0049] An upwardly extending gas outlet seat 43 is integrally formed on the top of the base assembly 4, and a nozzle 45 is installed on the gas outlet seat 43, and the gas outlet direction of the nozzle 45 is toward the ejector tube 12 of the igniter. In addition, an annular step 46 is provided on the periphery of the top of the base assembly 4, and the annular step 46 is used to support the liquid tray. The top surface of the fixed end of the mounting platform 42 is flush with the annular step 46, so that the fixed end of the mounting platform 42 can reliably support the liquid tray. Lugs 47 extending outwards are integrally formed on the two opposite outer side walls of the base assembly 4, and the top surface of the lug 47 is flush with the top surface of the annular boss 46, which is used to fix the liquid tray. It can be seen that after removing the burner head, the exposed parts of the burner are only the ignition assembly 5, the positioning boss 41, the air outlet seat 43 and the mounting screws for fixing the liquid tray. Compared with the base disclosed in CN219955317U or CN218721473U, the base assembly of this embodiment has fewer positioning structures, a simpler structure, is less likely to hide dirt, and is easier to clean.

[0050] The above 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, which all belong to the protection scope of the present invention.

Claims

1. A fire distributor, characterized in that: include: The fire distributor body (1) has an annular air cavity opening upward, the annular air cavity comprising a pressure stabilizing cavity (111) and a mixing cavity (112) connected to each other, an ejector tube (12) is provided at the bottom of the fire distributor body (1), and the outlet of the ejector tube (12) is connected to the pressure stabilizing cavity (111); and An air baffle (2) is arranged above the pressure stabilizing chamber (111), and its radial inner end is connected to the ignition divider body (1).

2. A fire distributor according to claim 1, characterized in that: A convex edge (21) extending inward and having a positioning hole (211) is fixedly provided at the radial inner end of the air baffle (2), and a positioning column (13) extending upward is fixedly provided at a position corresponding to the positioning hole (211) on the top of the ignition divider body (1), and the positioning column (13) is plugged in and matched with the positioning hole (211).

3. A fire distributor according to claim 2, characterized in that: A groove (14) is formed on the top of the fire divider body (1) and is open upward and toward the air baffle (2); the positioning column (13) is arranged in the groove (14) and close to the convex edge (21); and the convex edge (21) is inserted into the groove (14); and / or A limiting boss (131) extending outward is convexly provided on the periphery of the lower end of the positioning column (13), and the convex edge (21) is sleeved outside the positioning column (13) and abuts against the top of the limiting boss (131).

4. A fire distributor according to claim 3, characterized in that: The bottom surface of the groove (14) is arranged with one end close to the air baffle (2) being higher and the other end being lower, and the groove (14) passes through the central axis of the ignition divider body (1).

5. A fire distributor according to any one of claims 1 to 3, characterized in that: A support platform (16) is provided on one side of the top of the ignition distributor body (1) close to the pressure stabilizing chamber (111), and the radial inner end of the air baffle (2) abuts against the top of the support platform (16).

6. A fire distributor according to claim 1, characterized in that: The pressure stabilizing chamber (111) has a trapezoidal structure, and triangular or trapezoidal gentle slope surfaces (101) are formed on the left and right side surfaces of the pressure stabilizing chamber (111). The gentle slope surfaces (101) are arranged to be inclined or curved from top to bottom and toward the outside of the pressure stabilizing chamber (111), and the gentle slope surfaces (101) are connected to the inner cavity wall surface (103) of the mixing chamber (112) via an arc-shaped transition surface (102).

7. A fire distributor according to claim 1 or 6, characterized in that: The ignition distributor body (1) is in the shape of a truncated cone with a larger lower end and a smaller upper end, and the vertical cross-section of the mixing chamber (112) is in the shape of a "V".

8. The ignition distributor according to claim 1, characterized in that: The ejector tube (12) is arranged horizontally or inclined, and passes through the central axis of the ignition divider body (1). A clearance position (17) is provided at the bottom of the ignition divider body (1) corresponding to the entrance of the ejector tube (12).

9. A fire distributor according to claim 1 or 8, characterized in that: A limiting groove (18) extending downward and opening downward is fixedly provided at the bottom of the ejector tube (12).

10. A fire distributor according to claim 1 or 8, characterized in that: A plurality of supporting legs (19) extending downward and located on two relatively outer sides of the ejector tube (12) are fixedly provided at the bottom of the ignition distributor body (1), and an air intake passage (191) for secondary air to pass through is formed between adjacent supporting legs (19).

11. An upward air inlet burner, characterized in that: A fire distributor according to any one of claims 1 to 10, further comprising: A fire cover (3) is arranged on the top of the fire divider body (1), an air mixing chamber (31) is formed between the fire cover (3) and the fire divider body (1), the air baffle (2) is arranged in the air mixing chamber (31) and the radial outer end thereof abuts against or is gap-fitted with the outer annular wall of the fire cover (3); and / or The base assembly (4) is arranged at the bottom of the fire distributor body (1) and is in abutment with or matingly plugged with the fire distributor body (1).

12. The upward air inlet burner according to claim 11, characterized in that: A positioning structure is provided between the base and the fire distributor body (1), and / or a connecting portion (33) extending downward and located in the gas mixing chamber (31) is fixedly provided on the top of the fire cover (3), and the connecting portion (33) is detachably connected to the fire distributor body (1).

13. The upward air inlet burner according to claim 11, characterized in that: It also includes an ignition assembly (5), the top of the base assembly (4) is fixedly provided with a mounting platform (42) extending outward, the ignition assembly (5) is arranged outside the ignition distributor and the fire cover (3), and the lower end of the ignition assembly (5) is detachably mounted on the free end of the mounting platform (42).

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