CN219693252U - Inner ring fire cover assembly and combustor - Google Patents
Inner ring fire cover assembly and combustor Download PDFInfo
- Publication number
- CN219693252U CN219693252U CN202321289318.7U CN202321289318U CN219693252U CN 219693252 U CN219693252 U CN 219693252U CN 202321289318 U CN202321289318 U CN 202321289318U CN 219693252 U CN219693252 U CN 219693252U
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- Prior art keywords
- ignition
- wall
- fire cover
- inner ring
- cover assembly
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- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims description 16
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 14
- 230000000903 blocking effect Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Gas Burners (AREA)
Abstract
The inner ring fire cover assembly comprises a fire cover body, a fire cover opening and a fire outlet, wherein the fire cover body is provided with an annular top wall, an inner ring wall downwards extending from the inner side edge of the annular top wall and an outer ring wall downwards extending from the outer side edge of the annular top wall; the annular top wall of the fire cover body is provided with an ignition channel which extends radially and is communicated with the gas mixing chamber, an inner port of the ignition channel is positioned on the inner annular wall, and an outer port of the ignition channel is positioned on the outer annular wall; the ignition needle is arranged on the inner periphery of the inner annular wall, and the discharge end of the ignition needle is arranged corresponding to the inner end of the ignition channel; the position of the bottom wall of the ignition channel, which is relatively close to the outer port of the ignition channel, is provided with a first liquid discharge hole penetrating through the wall thickness, and the first liquid discharge hole extends downwards and is communicated with the outside. Compared with the prior art, the utility model can avoid the ignition channel from being blocked to influence the ignition.
Description
Technical Field
The utility model belongs to the technical field of household stoves, and particularly relates to an inner ring fire cover assembly and a combustor.
Background
In order to overcome the defect of ignition failure of the existing kitchen range, the inventor designs a scheme that an ignition needle is arranged in an inner ring fire cover, and the specific scheme is as patent application number 202222521379.3 of the utility model (a burner and a gas kitchen range comprising the same) (grant bulletin number CN 218001505U), wherein the burner comprises an inner ring fire cover and the ignition needle, a containing cavity is arranged in the middle part of the inner ring fire cover, an air flow channel with two ends respectively communicated with the air mixing cavity and the containing cavity is arranged in the inner ring fire cover, the air flow channel is positioned at the peripheral side of the containing cavity, the air flow channel comprises a first channel and a plurality of horizontal holes which are mutually communicated, one end of the first channel far away from the horizontal holes is communicated with the air mixing cavity, and one end of the horizontal holes far away from the first channel is communicated with the containing cavity; the ignition needle is arranged in the accommodating cavity, at least two horizontal holes are respectively positioned at two sides of the accommodating cavity, and in the height direction of the inner ring fire cover, the ignition end of the ignition needle is close to the horizontal holes.
The scheme has the problem that the overflow liquid enters the horizontal hole from outside to inside to cause the blockage of the horizontal hole, thereby influencing ignition.
Disclosure of Invention
The first technical problem to be solved by the utility model is to provide an inner ring fire cover assembly capable of avoiding ignition channel blockage to influence ignition.
The second technical problem to be solved by the utility model is to provide a burner with the inner ring fire cover assembly.
The technical scheme adopted by the utility model for solving the first technical problem is as follows: an inner ring fire cover assembly comprising:
the fire cover body is provided with an annular top wall, an inner annular wall extending downwards from the inner side edge of the annular top wall and an outer annular wall extending downwards from the outer side edge of the annular top wall, a gas mixing cavity is formed among the annular top wall, the inner annular wall and the outer annular wall, and a fire outlet hole is formed in the outer annular wall along the circumferential direction; the annular top wall of the fire cover body is provided with an ignition channel which extends radially and is communicated with the gas mixing chamber, an inner port of the ignition channel is positioned on the inner annular wall, and an outer port of the ignition channel is positioned on the outer annular wall;
the ignition needle is arranged on the inner periphery of the inner annular wall, and the discharge end of the ignition needle is arranged corresponding to the inner end of the ignition channel;
the method is characterized in that:
the position of the bottom wall of the ignition channel, which is relatively close to the outer port of the ignition channel, is provided with a first liquid discharge hole penetrating through the wall thickness, and the first liquid discharge hole extends downwards and is communicated with the outside.
Thus, when the overflow liquid enters the ignition channel from the outer port, the overflow liquid can be discharged from the first liquid discharge hole under the action of self gravity, so that the overflow liquid is prevented from blocking the ignition channel; under the condition that no large overflow liquid enters the ignition channel, the first liquid discharge hole can be used as a secondary air hole, so that the flue gas of the burner can be reduced better. In addition, secondary air can be preheated by the fire cover and nearby waste heat after entering from the first liquid discharge hole, so that the energy utilization rate is further improved, and the burner efficiency is also beneficial.
Preferably, at least two ignition channels are arranged at intervals along the circumferential direction. When the ignition is carried out, each ignition channel is carried out simultaneously, so that the ignition and flame transfer time is reduced, and even if part of ignition channels are blocked, other ignition channels can ensure the normal ignition and flame transfer function of the burner.
More preferably, the ignition channels are four, and are equally spaced in the circumferential direction. The fuel gas of four drums hedging is converged near the center of the fire cover (the tip of the ignition needle), thereby greatly improving the ignition success rate. Even under the condition of large gas pressure and air door, the ignition flame can be solved due to the existence of opposite impact and 90-degree rotation angle.
Further, the ignition channel is formed at the central position of the annular top wall in the upper and lower thickness direction, and a flame stabilizing groove extending along the circumferential direction and penetrating the ignition channel and communicated with the ignition channel is formed in the peripheral wall of the annular top wall and is positioned above the flame outlet hole.
Further, a second communication hole penetrating through the wall thickness and communicating the flame stabilizing groove with the gas mixing chamber is formed in the position, corresponding to the gas mixing chamber, of the bottom wall of the flame stabilizing groove, a second liquid discharge hole penetrating through the wall thickness is formed in the position, relatively close to the peripheral wall of the annular top wall, of the bottom wall of the flame stabilizing groove, and the second liquid discharge hole extends downwards and is communicated with the outside.
In the above solution, in order to further avoid the overflow from blocking the ignition channel, preferably, the ignition channel has a first portion relatively close to the ignition needle and a second portion relatively far from the ignition needle in the length direction, the inner diameter of the first portion is smaller than the inner diameter of the second portion, and a step is formed at a junction between the first portion and the second portion;
the first drain hole is disposed in correspondence with the second portion of the ignition channel.
The existence of the step can prevent the overflow liquid from entering the first part; and the second part with larger inner diameter can ensure that more air flow in the air mixing chamber flows to the second part, and simultaneously can better adapt to extreme conditions such as a high-pressure large air door and the like, thereby reducing the flame separation problem.
In order to realize the communication between the gas mixing chamber and the ignition channel, preferably, a first communication hole for communicating the gas mixing chamber and the ignition channel is arranged at a position of the bottom wall of the ignition channel corresponding to the gas mixing chamber.
Preferably, the first communication hole extends up and down and is disposed corresponding to the first portion of the ignition passage.
In the above aspect, preferably, the first drain hole extends obliquely from top to bottom and outwards.
Preferably, the fire outlet hole is inclined from inside to outside to the upper side, and the bottom wall of the fire outlet hole is provided with a third liquid discharge hole penetrating through the wall thickness, and the third liquid discharge hole extends downwards and is communicated with the outside. The third liquid discharge hole can prevent the overflow liquid from blocking the fire hole and can be used as a secondary air hole.
In each of the above embodiments, in order to improve the ignition success rate, preferably, a cover plate with mesh is provided above the ignition needle of the fire cover body, and an edge of the cover plate is engaged with an inner edge of the annular top wall. The setting of apron can reduce the influence of interference factors such as external strong wind to the ignition, and can shelter from the overflow liquid, avoids spilling liquid and drops on the ignition needle. And small flame can be generated on the cover plate, so that the combustion uniformity of the burner in the radial direction is improved.
Preferably, the top surface of the cover plate is in the shape of an umbrella surface with a central bulge and a periphery extending obliquely downwards. Thereby urging the overflow to the peripheral side of the cover plate.
Further, the center of the bottom surface of the cover plate is opposite to the discharge end of the ignition needle, and the mesh is arranged avoiding the center of the cover plate.
Further, a third communication hole for communicating the gas mixing chamber and the ignition channel is arranged at a position of the bottom wall of the ignition channel, which is relatively close to the inner port of the ignition channel; the third communication hole is inclined inward from the lower upper side and is opposite to the cover plate. The third communication hole provides small-load fuel gas for the center of the fire cover.
The utility model solves the second technical problem by adopting the technical proposal that: a burner characterized by having an inner annular fire cover assembly as described above.
The burner is used for a kitchen range.
Compared with the prior art, the utility model has the advantages that: the bottom wall of the ignition channel is provided with the first liquid discharge hole, and the first liquid discharge hole extends downwards and is communicated with the outside, so that when the overflow liquid enters the ignition channel from the outer port, the overflow liquid can be discharged from the first liquid discharge hole under the action of self gravity, and the overflow liquid is prevented from blocking the ignition channel; under the condition that no large overflow liquid enters the ignition channel, the first liquid discharge hole can be used as a secondary air hole, so that the flue gas of the burner can be reduced better. In addition, secondary air can be preheated by the fire cover and nearby waste heat after entering from the first liquid discharge hole, so that the energy utilization rate is further improved, and the burner efficiency is also beneficial.
Drawings
FIG. 1 is a schematic view of an inner ring fire cover assembly according to an embodiment of the utility model;
FIG. 2 is a schematic view of an inner ring fire cover assembly according to an embodiment of the present utility model from another perspective;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 1;
FIG. 5 is a cross-sectional view taken along the direction C-C in FIG. 1;
FIG. 6 is a transverse cross-sectional view of an inner ring fire cover assembly in accordance with an embodiment of the utility model;
fig. 7 is a schematic view of a burner according to an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 7, a preferred embodiment of an inner ring fire cover assembly and a burner according to the present utility model comprises a fire cover body 1 and an ignition needle 2.
The fire cover body 1 includes an annular top wall 11, an inner annular wall 12 extending downward from an inner edge of the annular top wall 11, and an outer annular wall 13 extending downward from an outer edge of the annular top wall 11, wherein a gas mixing chamber 10 is formed among the annular top wall 11, the inner annular wall 12 and the outer annular wall 13, and the outer annular wall 13 is provided with a fire outlet 131 along a circumferential direction. The fire outlet 131 is inclined from inside to outside, and the bottom wall of the fire outlet 131 is provided with a third liquid discharge hole 132 penetrating through the wall thickness, and the third liquid discharge hole 132 extends downward and communicates with the outside, as shown in fig. 1, 2 and 4.
As shown in fig. 3, the annular ceiling wall 11 has a radially extending ignition passage 110 at a central position in the up-down thickness direction, an inner port 111 of the ignition passage 110 being located at the inner annular wall 12, and an outer port 112 of the ignition passage 110 being located at the outer annular wall 13. The ignition channel 110 is provided with a first part 11a relatively close to the inner side and a second part 11b relatively close to the outer side in the length direction, the inner diameter of the first part 11a is smaller than that of the second part 11b, and a step 11c is formed at the joint between the first part 11a and the second part 11 b; the bottom wall of the second portion 11b is provided with a first drain hole 113 penetrating the wall thickness at a position relatively close to the outer port 112 of the ignition passage, and the first drain hole 113 extends obliquely outward from top to bottom and communicates with the outside. The bottom wall of the first portion 11a is provided with a first communication hole 114 extending downward and communicating the gas mixing chamber 10 with the ignition passage 110 at a position corresponding to the gas mixing chamber 10.
In this embodiment, as shown in fig. 6, the ignition channels 110 are four and equally spaced circumferentially and are radially formed as a whole.
Meanwhile, as shown in fig. 2, 3 and 4, the outer peripheral wall of the annular top wall 11 is provided with a flame stabilizing groove 14 extending in the circumferential direction and penetrating the ignition channel 110 and communicating with the ignition channel 110, and the flame stabilizing groove 14 is located above the flame outlet 131. Specifically, a second communication hole 141 penetrating through the wall thickness and communicating the flame holding tank 14 with the air mixing chamber 10 is provided at a position of the bottom wall of the flame holding tank 14 corresponding to the air mixing chamber 10, and a second liquid discharge hole 142 penetrating through the wall thickness is provided at a position of the bottom wall of the flame holding tank 14 relatively close to the outer peripheral wall of the annular top wall 11, and the second liquid discharge hole 142 extends downward and communicates with the outside.
The ignition needle 2 is disposed on the inner periphery of the inner annular wall 12, and the discharge end of the ignition needle 2 is disposed corresponding to the inner port 111 of the ignition channel 110.
At the same time, a cover plate 3 with meshes is arranged above the ignition needle 2 of the fire cover body 1, and the edge of the cover plate 3 is jointed with the inner edge of the annular top wall 11. In this embodiment, the top surface of the cover plate 3 is in the shape of an umbrella surface with a central protrusion and a periphery extending obliquely downward. The center of the bottom surface of the cover plate 3 is opposite to the discharge end of the ignition needle 2, and the mesh is disposed away from the center of the cover plate 3. A third communication hole 115 for communicating the gas mixture chamber 10 with the ignition passage 110 is provided in the ignition passage 110 at a position relatively close to the port 111 in the ignition passage 110 in the bottom wall of the first portion 11 a; the third communication hole 115 is inclined inward from the lower upper side and is opposite to the cover plate 3.
As shown in fig. 7, the burner of the present embodiment is used for a kitchen range, and has a conventional base, an inner ring gas-mixing chamber provided on the base, and the inner ring fire cover assembly described above, and the fire cover body 1 is provided to cover the inner ring gas-mixing chamber.
In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.
Claims (16)
1. An inner ring fire cover assembly comprising:
the fire cover body (1) is provided with an annular top wall (11), an inner annular wall (12) extending downwards from the inner side edge of the annular top wall (11) and an outer annular wall (13) extending downwards from the outer side edge of the annular top wall (11), a gas mixing cavity (10) is formed among the annular top wall (11), the inner annular wall (12) and the outer annular wall (13), and the outer annular wall (13) is provided with a fire outlet hole (131) along the circumferential direction; an ignition channel (110) which extends radially and is communicated with the gas mixing chamber (10) is arranged on the annular top wall (11) of the fire cover body (1), an inner port (111) of the ignition channel (110) is positioned on the inner annular wall (12), and an outer port (112) of the ignition channel (110) is positioned on the outer annular wall (13);
the ignition needle (2) is arranged on the inner periphery of the inner annular wall (12), and the discharge end of the ignition needle (2) is arranged corresponding to the inner end (111) of the ignition channel (110);
the method is characterized in that:
a first liquid discharge hole (113) penetrating through the wall thickness is formed in the position, relatively close to the outer port (112) of the ignition channel, of the bottom wall of the ignition channel (110), and the first liquid discharge hole (113) extends downwards and is communicated with the outside.
2. An inner ring fire cover assembly as defined in claim 1 wherein: at least two ignition channels (110) are arranged at intervals along the circumferential direction.
3. An inner ring fire cover assembly as defined in claim 2 wherein: the ignition channels (110) are four and are equally spaced circumferentially.
4. An inner ring fire cover assembly as defined in claim 2 wherein: the ignition channel (110) is formed at the central position of the annular top wall (11) in the upper and lower thickness direction, the peripheral wall of the annular top wall (11) is provided with a flame stabilizing groove (14) which extends along the circumferential direction and penetrates through the ignition channel (110) and is communicated with the ignition channel (110), and the flame stabilizing groove (14) is positioned above the flame outlet hole (131).
5. An inner ring fire cover assembly as defined in claim 4 wherein: the bottom wall of the flame stabilizing tank (14) is provided with a second communication hole (141) which penetrates through the wall thickness and is communicated with the flame stabilizing tank (14) and the gas mixing chamber (10) at a position corresponding to the gas mixing chamber (10), the bottom wall of the flame stabilizing tank (14) is provided with a second liquid discharge hole (142) which penetrates through the wall thickness at a position relatively close to the peripheral wall of the annular top wall (11), and the second liquid discharge hole (142) extends downwards and is communicated with the outside.
6. An inner ring fire cover assembly as defined in claim 1 wherein: the ignition channel (110) is provided with a first part (11 a) relatively close to the ignition needle (2) and a second part (11 b) relatively far away from the ignition needle (2) in the length direction, the inner diameter of the first part (11 a) is smaller than that of the second part (11 b), and a step (11 c) is formed at the joint between the first part (11 a) and the second part (11 b);
the first drain hole (113) is provided corresponding to the second portion (11 b) of the ignition passage (110).
7. An inner ring fire cover assembly as defined in claim 6 wherein: the ignition channel (110) is provided with a first communication hole (114) at the position corresponding to the gas mixing chamber (10) at the bottom wall of the ignition channel (110) for communicating the gas mixing chamber (10) with the ignition channel (110).
8. An inner ring fire cover assembly as defined in claim 7 wherein: the first communication hole (114) extends up and down and is disposed in correspondence with the first portion (11 a) of the ignition passage (110).
9. An inner ring fire cover assembly as defined in claim 1 wherein: the first drain hole (113) extends obliquely from top to bottom and outwards.
10. An inner ring fire cover assembly as defined in claim 1 wherein: the fire outlet hole (131) is inclined from inside to outside to the top, a third liquid discharge hole (132) penetrating through the wall thickness is formed in the bottom wall of the fire outlet hole (131), and the third liquid discharge hole (132) extends downwards and is communicated with the outside.
11. An inner ring fire cover assembly as claimed in any one of claims 1 to 10 wherein: a cover plate (3) with meshes is arranged above the ignition needle (2) of the fire cover body (1), and the edge of the cover plate (3) is jointed with the inner side edge of the annular top wall (11).
12. An inner ring fire cover assembly as defined in claim 11 wherein: the top surface of the cover plate (3) is in an umbrella surface shape with a central bulge and a periphery extending obliquely downwards.
13. An inner ring fire cover assembly as defined in claim 12 wherein: the center of the bottom surface of the cover plate (3) is opposite to the discharge end of the ignition needle (2), and the mesh is arranged avoiding the center of the cover plate (3).
14. An inner ring fire cover assembly as defined in claim 11 wherein: a third communication hole (115) for communicating the gas mixing chamber (10) with the ignition channel (110) is arranged at a position, which is relatively close to the inner port (111) of the ignition channel (110), of the bottom wall of the ignition channel (110); the third communication hole (115) is inclined from bottom to top inward and is opposite to the cover plate (3).
15. A burner having an inner annular fire cover assembly as claimed in any one of claims 1 to 14.
16. The burner of claim 15, wherein: the burner is used for a kitchen range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321289318.7U CN219693252U (en) | 2023-05-24 | 2023-05-24 | Inner ring fire cover assembly and combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321289318.7U CN219693252U (en) | 2023-05-24 | 2023-05-24 | Inner ring fire cover assembly and combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219693252U true CN219693252U (en) | 2023-09-15 |
Family
ID=87940377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321289318.7U Active CN219693252U (en) | 2023-05-24 | 2023-05-24 | Inner ring fire cover assembly and combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219693252U (en) |
-
2023
- 2023-05-24 CN CN202321289318.7U patent/CN219693252U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |