Combustor

Abstract

The utility model discloses a burner which comprises a furnace end, an outer ring gas cavity is respectively communicated with a first outer injection pipe and a second outer injection pipe, and a fixing frame is arranged at the gas inlet end of the first outer injection pipe and the gas inlet end of the second outer injection pipe. The first outer air channel is limited in the fixing frame, and the end, away from the outer ring air cavity, of the first outer injection pipe communicates with the air outlet end of the first outer air channel; the second outer air channel is limited in the fixing frame, and the end, away from the outer ring air cavity, of the second outer injection pipe communicates with the air outlet end of the second outer air channel; the connecting channel is limited in the fixing frame, one end of the connecting channel is communicated with the first outer air channel, the other end of the connecting channel is communicated with the second outer air channel, an outer air inlet is formed in the fixing frame, one end of the outer air inlet is communicated with the air inlet end of the first outer air channel or the air inlet end of the second outer air channel, and the other end of the outer air inlet is communicated with external air supply. The structure is simple, the outer ring air cavity can be provided with the two outer injection pipes, and the two outer injection pipes share one air path system.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a burner. Background Art

[0002] In the prior art, the burner heads of most down-draft burners have an ejector tube on their outer ring. In order to improve the primary air coefficient of the burner head, two ejector tubes can be provided on the outer ring. The gas path system of the burner with two ejector tubes on the outer ring is generally more complicated. Summary of the Invention

[0003] The present invention aims to solve, at least to a certain extent, one of the problems existing in the existing related technologies. To this end, the present invention proposes a burner with a simple structure, which can enable the outer ring gas cavity to have two outer ejection tubes, and the two outer ejection tubes share a gas path system, thereby controlling the gas flow and on-off of the two outer ring ejection tubes.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A burner comprising:

[0006] A burner, wherein a flame distributor is provided at an upper position of the burner, the flame distributor having an outer ring air cavity, a first air inlet and a second air inlet respectively provided on the outer ring air cavity, the first air inlet being connected to a first external ejection tube, the second air inlet being connected to a second external ejection tube, and a fixing frame being provided at the air inlet ends of the first external ejection tube and the second external ejection tube;

[0007] a first external air duct, wherein the first external air duct is confined within the fixing frame, and the first external ejector tube is connected to an air outlet end of the first external air duct at an end away from the outer ring air cavity;

[0008] a second external air duct, the second external air duct being confined within the fixing frame, the second external ejector tube being connected to an air outlet end of the second external air duct at an end away from the outer ring air cavity;

[0009] A connecting channel is defined within the fixing frame, one end of the connecting channel is connected to the first external air duct, and the other end is connected to the second external air duct, and an external air inlet is provided on the fixing frame, one end of the external air inlet is connected to the air inlet end of the first external air duct or the air inlet end of the second external air duct, and the other end is connected to the external air supply.

[0010] In some embodiments, a guide plate is further included, wherein a guide hole is opened on the guide plate, the guide plate is arranged in the outer ring air cavity, and the guide plate is located above the gas outlet ends of the first outer ejector tube and the second outer ejector tube, so that the gas output by the first outer ejector tube and the second outer ejector tube enters the outer ring air cavity after passing through the guide hole.

[0011] In some embodiments, a fixing member is further included, and the guide plate is installed in the outer ring air cavity through the fixing member.

[0012] In some embodiments, an internal air channel is further included, wherein the ignition distributor has an inner ring air cavity, the inner ring air cavity is connected to an inner ejector tube, the inner air channel is confined within the fixed frame, and the inner ejector tube is connected to the external air supply through the inner air channel at one end away from the inner ring air cavity.

[0013] In some embodiments, a fire cover is further included, wherein the fire cover has an inner fire cover and an outer fire cover, wherein the inner fire cover is arranged at the upper end position of the inner ring air cavity, and the outer fire cover is arranged at the upper end position of the outer ring air cavity.

[0014] In some embodiments, an ignition groove is provided on the fire cover, an inner ring fire hole is opened on the outer ring wall of the inner fire cover, and an outer ring fire hole is opened on the outer ring wall of the outer fire cover. One end of the ignition groove is provided corresponding to the inner ring fire hole, and the other end is provided corresponding to the outer ring fire hole.

[0015] In some embodiments, a secondary air channel is further included, wherein the secondary air channel vertically penetrates the middle position of the burner.

[0016] In some embodiments, a boss is provided at a middle position of the fire cover, an air outlet is provided on a circumferential side wall of the boss, and the air outlet is communicated with an air outlet end of the secondary air passage.

[0017] In some embodiments, an inner ring nozzle is further included, through which the gas outlet end of the inner airway is connected to the inner ejector tube.

[0018] In some embodiments, a first outer nozzle and a second outer nozzle are further included, wherein the first outer nozzle is used to connect the first outer airway outlet end with the first outer ejection tube, and the second outer nozzle is used to connect the second outer airway outlet end with the second outer ejection tube.

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

[0020] 1. The burner of the utility model has a simple structure, and the outer ring gas cavity can have two outer ejection tubes, and the two outer ejection tubes share a gas path system, thereby controlling the gas flow and on-off of the two outer ring ejection tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of a burner in an embodiment of the present utility model;

[0023] Figure 2 This is an exploded schematic diagram of a burner in an embodiment of the present utility model;

[0024] Figure 3 This is a first cross-sectional view of a burner in an embodiment of the present utility model;

[0025] Figure 4 It is a second cross-sectional view of the burner in the embodiment of the present utility model. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort shall fall within the scope of the technical solutions claimed for protection by the present invention.

[0028] Example:

[0029] like Figures 1 to 4 As shown, this embodiment provides a burner, comprising:

[0030] A burner 1 is provided with a flame distributor at an upper position of the burner 1. The flame distributor has an outer ring air cavity 12. A first air inlet and a second air inlet are respectively provided on the outer ring air cavity 12. The first air inlet is connected to a first external ejection tube 14, and the second air inlet is connected to a second external ejection tube 15. A fixing frame 2 is provided at the air inlet ends of the first external ejection tube 14 and the second external ejection tube 15.

[0031] A first external air passage 22 is defined within the fixed frame 2, and the first external ejector tube 14 is connected to an outlet end of the first external air passage 22 at an end away from the outer ring air cavity 12;

[0032] The second outer air channel 23 is confined within the fixed frame 2, and the second outer ejector tube 15 is connected to the outlet end of the second outer air channel 23 at one end away from the outer ring air cavity 12;

[0033] A connecting channel 24 is defined within the fixed frame 2, one end of the connecting channel 24 is connected to the first external air duct 22, and the other end is connected to the second external air duct 23, and an external air inlet 25 is provided on the fixed frame 2, one end of the external air inlet 25 is connected to the air inlet end of the first external air duct 22 or the air inlet end of the second external air duct 23, and the other end is connected to the external air supply.

[0034] In this embodiment, the structure is simple, and the outer ring gas cavity 12 can have two outer ejection pipes, and the two outer ejection pipes share a gas path system, thereby controlling the gas flow entering the two outer ring ejection pipes and the on-off

[0035] In this embodiment, a fire divider is provided at an upper position of the burner head 1, and an outer ring air cavity 12 is defined in the fire divider, and a first air inlet and a second air inlet are provided on the outer ring air cavity 12, the first air inlet is connected to the first external ejection tube 14, and the second air inlet is connected to the second external ejection tube 15, so that the outer ring air cavity 12 is connected to the first external ejection tube 14 and the second external ejection tube 15, respectively, and a fixing frame 2 is provided on the air inlet end of the first external ejection tube 14 and the second external ejection tube 15, so that the fixing frame 2 is respectively arranged corresponding to the air inlet end of the first external ejection tube 14 and the second external ejection tube 15, and a first external air duct 22 and a second external air duct 23 are respectively defined in the fixing frame 2, and the first external ejection tube 14 is connected to the outlet of the first external ejection tube 22 at the end away from the outer ring air cavity 12. The air ends are connected, and the second external ejector tube 15 is connected to the air outlet end of the second external air duct 23 at one end away from the outer ring air cavity 12. At the same time, a connecting channel 24 is defined in the fixed frame 2, one end of the connecting channel 24 is connected to the first external air duct 22, and the other end is connected to the second external air duct 23, and an external air inlet 25 is provided on the fixed frame 2, one end of the external air inlet 25 is connected to the air inlet end of the first external air duct 22 or the air inlet end of the second external air duct 23, and the other end is connected to the external air supply, so that the outer ring air cavity 12 of the furnace head 1 has two external ejector tubes, and the external air supply enters the two external ejector tubes respectively after passing through the fixed frame 2, and is respectively ejected into the outer ring air cavity 12 by the two external ejector tubes so that the two outer ring ejector tubes share an air path system, thereby improving the primary air coefficient of the outer ring.

[0036] Furthermore, it also includes a guide plate 3, on which a guide hole 31 is opened. The guide plate 3 is arranged in the outer ring air cavity 12, and the guide plate 3 is located above the outlet ends of the first outer ejector tube 14 and the second outer ejector tube 15. The gas output by the first outer ejector tube 14 and the second outer ejector tube 15 enters the outer ring air cavity 12 after passing through the guide hole 31, thereby reducing the flow rate of the fuel-air mixture entering the outer ring air cavity 12 from the outer ring ejector tube, so that the fuel gas and the primary air are mixed more evenly in the outer ring air cavity 12, so that the density field, pressure field and flow rate field of the fuel-air mixture can be made more uniform, thereby making the combustion more complete and the flame more uniform.

[0037] Preferably, a fixing piece is further included, and the guide plate 3 is installed in the outer ring air cavity 12 through the fixing piece.

[0038] In this embodiment, a guide plate 3 is provided in the outer ring air cavity 12, and a guide hole 31 is opened on the guide plate 3. Since the guide plate 3 is located above the outlet ends of the first outer ejector tube 14 and the second outer ejector tube 15, the gas output by the first outer ejector tube 14 and the second outer ejector tube 15 enters the outer ring air cavity 12 through the guide hole 31, thereby making the mixing of the fuel gas and the primary air more uniform.

[0039] Specifically, it also includes an internal air channel 21. The ignition distributor has an inner ring air cavity 11. The inner ring air cavity 11 is connected to an inner ejector tube 13. The internal air channel 21 is confined in the fixed frame 2. The inner ejector tube 13 is connected to the external air supply through the internal air channel 21 at one end away from the inner ring air cavity 11.

[0040] In this embodiment, an inner ring air cavity 11 and an outer ring air cavity 12 are respectively defined in the ignition divider, so that the outer ring air cavity 12 is located at an external position of the inner ring air cavity 11, and the inner ring air cavity 11 is connected to an inner ejection tube 13, and a fixing frame 2 is provided on the air inlet ends of the inner ejection tube 13, the first outer ejection tube 14, and the second outer ejection tube 15, so that the fixing frame 2 is respectively arranged corresponding to the air inlet ends of the first outer ejection tube 14, the second outer ejection tube 15 and the inner ejection tube 13. Since the first outer air duct 22 and the second outer air duct 23 are respectively defined at the two end positions in the fixing frame 2, and the inner air duct 21 is defined at the middle position of the fixing frame 2, the inner ejection tube 13 is connected to the external air supply through the inner air duct 21 at the end away from the inner ring air cavity 11, and the external air supply enters the inner ring air cavity 11 after passing through the inner air duct 21 and the inner ejection tube 13 in sequence.

[0041] Preferably, a fire cover 4 is further included, which has an inner fire cover and an outer fire cover, wherein the inner fire cover is arranged at the upper end position of the inner ring air cavity 11, and the outer fire cover is arranged at the upper end position of the outer ring air cavity 12.

[0042] Furthermore, an ignition groove 41 is provided on the fire cover 4, an inner ring fire hole 42 is opened on the outer ring wall of the inner fire cover, and an outer ring fire hole 43 is opened on the outer ring wall of the outer fire cover. One end of the ignition groove 41 is provided corresponding to the inner ring fire hole 42, and the other end is provided corresponding to the outer ring fire hole 43.

[0043] Preferably, a secondary air channel 5 is further included, and the secondary air channel 5 vertically passes through the middle position of the burner 1.

[0044] Specifically, a boss is provided at the middle position of the fire cover 4 , and an air outlet 44 is provided on the circumferential side wall of the boss. The air outlet 44 is communicated with the air outlet end of the secondary air passage 5 .

[0045] In this embodiment, the fire cover 4 has an inner fire cover and an outer fire cover, wherein the inner fire cover is arranged at the upper end position of the inner ring air cavity 11, and the outer fire cover is arranged at the upper end position of the outer ring air cavity 12. An ignition groove 41 is provided on the top wall of the fire cover 4, an inner ring fire hole 42 is opened on the outer ring wall of the inner fire cover, and an outer ring fire hole 43 is opened on the outer ring wall of the outer fire cover. One end of the ignition groove 41 is arranged corresponding to the inner ring fire hole 42, and the other end is arranged corresponding to the outer ring fire hole 43. In addition, since the fire cover 4 is integrally formed, that is, the inner fire cover and the outer fire cover are an integrally formed structure, the inner ring fire hole 42 and the outer ring fire hole 43 are both provided on this integrally formed fire cover 4.

[0046] More preferably, a secondary air passage 5 is provided vertically through the middle of the burner head 1, a boss is provided at the middle of the fire cover 4, and an air outlet 44 is provided on the circumferential side wall of the boss. The air outlet 44 is connected to the air outlet end of the secondary air passage 5, so that the air outlet 44 is arranged horizontally and the secondary air passage 5 is arranged vertically, so that the secondary air passage 5 and the air outlet 44 are arranged vertically, thereby effectively preventing overflow from entering the secondary air passage.

[0047] More preferably, a secondary air channel 5 is provided through the middle position of the burner head 1, that is, the secondary air channel 5 passes through the middle position of the inner ring air cavity 11, and an air outlet 44 is opened at the middle position of the fire cover 4. The air outlet 44 is connected to the air outlet end of the secondary air channel 5. After the secondary air enters the secondary air channel 5 from the bottom of the burner head 1 and flows upward, it finally flows out from the air outlet 44 on the fire cover 4, thereby providing sufficient secondary air for gas combustion.

[0048] Preferably, an inner ring nozzle 6 is further included, through which the gas outlet end of the inner air channel 21 is connected to the inner ejector tube 13.

[0049] In particular, it also includes a first outer nozzle 7 and a second outer nozzle 8, wherein the first outer nozzle 7 is used to connect the outlet end of the first outer air channel 22 with the first outer ejection tube 14, and the second outer nozzle 8 is used to connect the outlet end of the second outer air channel 23 with the second outer ejection tube 15.

[0050] In this embodiment, the fixing frame 2 is fixedly mounted at the end positions of the first outer ejection tube 14, the second outer ejection tube 15, and the inner ejection tube 13 by screws, and the outlet end of the inner air channel 21 is connected to the inlet end of the inner ejection tube 13 by the inner ring nozzle 6, the outlet end of the first outer air channel 22 is connected to the inlet end of the first outer ejection tube 14 by the first outer nozzle 7, and the outlet end of the second outer air channel 23 is connected to the inlet end of the second outer ejection tube 15 by the second outer nozzle 8. More preferably, an outer ring joint and an inner ring joint are respectively provided on the fixing frame 2, and the outer ring joint is connected to the inlet end of the first outer air channel 22 or the inlet end of the second outer air channel 23, thereby connecting the inlet end of the first outer air channel 22 or the inlet end of the second outer air channel 23 to the external air supply, and at the same time, the inner ring joint is connected to the inlet end of the inner air channel 21, thereby connecting the inlet end of the inner air channel 21 to the external air supply.

[0051] 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 burner, characterized in that: include: A burner (1) is provided with a flame divider at an upper position of the burner (1), the flame divider having an outer ring air cavity (12), a first air inlet and a second air inlet respectively provided on the outer ring air cavity (12), the first air inlet being connected to a first external ejection tube (14), the second air inlet being connected to a second external ejection tube (15), and a fixing frame (2) being provided at the air inlet ends of the first external ejection tube (14) and the second external ejection tube (15); a first external air passage (22), the first external air passage (22) being confined within the fixing frame (2), the first external ejector tube (14) being connected to an air outlet end of the first external air passage (22) at an end away from the outer ring air cavity (12); a second external air passage (23), the second external air passage (23) being confined within the fixing frame (2), the second external ejector tube (15) being connected to an air outlet end of the second external air passage (23) at an end away from the outer ring air cavity (12); A connecting channel (24) is defined within the fixing frame (2), one end of the connecting channel (24) is connected to the first external air channel (22), and the other end is connected to the second external air channel (23), and an external air inlet (25) is provided on the fixing frame (2), one end of the external air inlet (25) is connected to the air inlet end of the first external air channel (22) or the air inlet end of the second external air channel (23), and the other end is connected to an external air supply.

2. The burner according to claim 1, characterized in that The invention also includes a guide plate (3), on which a guide hole (31) is opened. The guide plate (3) is arranged in the outer ring air cavity (12), and the guide plate (3) is located above the gas outlet ends of the first outer ejector tube (14) and the second outer ejector tube (15), so that the gas output by the first outer ejector tube (14) and the second outer ejector tube (15) enters the outer ring air cavity (12) after passing through the guide hole (31).

3. The burner according to claim 2, characterized in that It also includes a fixing piece, and the guide plate (3) is installed in the outer ring air cavity (12) through the fixing piece.

4. The burner according to claim 1, characterized in that The ignition device further comprises an inner air passage (21), wherein the ignition device has an inner ring air cavity (11), wherein the inner ring air cavity (11) is connected to an inner ejector tube (13), and wherein the inner air passage (21) is confined within the fixing frame (2), and the inner ejector tube (13) is connected to an external air supply through the inner air passage (21) at one end away from the inner ring air cavity (11).

5. The burner according to claim 4, characterized in that It also includes a fire cover (4), which has an inner fire cover and an outer fire cover, wherein the inner fire cover is arranged at the upper end position of the inner ring air cavity (11), and the outer fire cover is arranged at the upper end position of the outer ring air cavity (12).

6. The burner according to claim 5, characterized in that An ignition groove (41) is provided on the fire cover (4), an inner ring fire hole (42) is provided on the outer ring wall of the inner fire cover, and an outer ring fire hole (43) is provided on the outer ring wall of the outer fire cover. One end of the ignition groove (41) is provided corresponding to the inner ring fire hole (42), and the other end is provided corresponding to the outer ring fire hole (43).

7. The burner according to claim 5, characterized in that It also includes a secondary air channel (5), which runs vertically through the middle of the burner head (1).

8. The burner according to claim 7, characterized in that A boss is provided at the middle position of the fire cover (4), and an air outlet (44) is provided on the circumferential side wall of the boss. The air outlet (44) is connected to the air outlet end of the secondary air channel (5).

9. The burner according to claim 4, characterized in that It also includes an inner ring nozzle (6), through which the gas outlet end of the inner air channel (21) is connected to the inner ejector tube (13).

10. The burner according to any one of claims 1 to 9, characterized in that: It also includes a first outer nozzle (7) and a second outer nozzle (8), wherein the first outer nozzle (7) is used to connect the gas outlet end of the first outer air channel (22) to the first outer ejection tube (14), and the second outer nozzle (8) is used to connect the gas outlet end of the second outer air channel (23) to the second outer ejection tube (15).

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