Fire distributor, burner and gas stove

By designing the fire splitter and outer ring fire cover of the fire splitter, the problem of insufficient flame of the gas stove under high heat load conditions is solved, the full combustion of gas and the reduction of carbon monoxide content is achieved, and the user's life safety is ensured.

CN119573050APending Publication Date: 2025-03-07VATTI CORP LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411705000.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-26
Publication Date
2025-03-07

AI Technical Summary

Technical Problem

Under high heat load conditions, the burner diameter of the existing gas stove is small, resulting in insufficient flame, increasing the content of toxic gases such as carbon monoxide, affecting the safety of users' lives.

Method used

A fire divider is designed, including a fire divider and an outer ring fire cover. The outer ring fire cover is distributed on the top and inner sides of the fire cover to provide a larger flame area, and secondary air is supplemented through the top and annular space of the outer ring fire cover to promote full combustion of the gas.

Benefits of technology

Even if a small diameter burner is used, sufficient flame area can be maintained, the carbon monoxide content can be reduced, the full combustion effect of the gas can be improved, and the user's safety can be ensured.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119573050A_ABST
    Figure CN119573050A_ABST
Patent Text Reader

Abstract

The invention provides a fire distributor, a burner and a gas stove, the fire distributor comprises a fire distribution seat, the fire distribution seat comprises an outer ring gas distribution groove and an inner ring gas distribution groove, the outer ring gas distribution groove comprises a groove bottom, an inner groove wall and an outer groove wall, the outer groove wall surrounds the outer side of the inner groove wall, the groove bottom is connected with the inner groove wall and the outer groove wall, the outer groove wall, the groove bottom and the inner groove wall enclose to form the outer ring gas distribution groove, and the inner ring gas distribution groove is connected with the inner ring gas distribution groove; an annular space is formed between the inner groove wall and the groove wall of the inner ring gas distribution groove; the outer ring fire cover is arranged above the outer ring gas distribution groove and used for sealing and covering the outer ring gas distribution groove, the outer ring fire cover comprises a fire cover top surface and a fire cover inner ring surface, the fire cover inner ring surface faces one side of the inner ring gas distribution groove, the outer ring fire cover is provided with an outer ring fire groove, the outer ring fire groove is located at the junction of the fire cover top surface and the fire cover inner ring surface, one side of the outer ring fire groove extends to the fire cover top surface, and the other side of the outer ring fire groove extends to the fire cover inner ring surface. And the other side extends to the inner ring surface of the fire cover. The distributor provided by the invention can provide a larger thermal load with a smaller diameter.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of kitchen equipment, and in particular to a fire distributor, a burner and a gas stove. Background Art

[0002] As market demand changes, the demand for high heat load gas stoves is increasing. Generally, the inner rotating stoves on the market will have a larger burner diameter so that more outer ring fire grooves can be processed, thereby increasing the heat load of the gas stove to meet market demand. However, increasing the burner diameter will also lead to an increase in costs.

[0003] If the burner diameter is small, the burner outer ring fire holes are few. When the gas stove load is large, the heat intensity of the fire holes is large and the flame is long. The outer ring flame is close to the inner ring flame and cannot burn fully, resulting in an increase in the content of toxic gases such as carbon monoxide, which affects the life safety of users. Summary of the invention

[0004] The embodiments of the present invention provide a flame distributor, a burner and a gas stove to at least solve some of the above technical problems existing in the prior art.

[0005] According to a first aspect of an embodiment of the present invention, there is provided a fire distributor, comprising:

[0006] The fire-distributing seat comprises an outer ring gas-distributing groove and an inner ring gas-distributing groove, wherein the outer ring gas-distributing groove comprises a groove bottom, an inner groove wall and an outer groove wall, wherein the outer groove wall surrounds the outer side of the inner groove wall, the groove bottom connects the inner groove wall and the outer groove wall, the outer groove wall, the groove bottom and the inner groove wall enclose the outer ring gas-distributing groove, and an annular space is formed between the inner groove wall and the groove wall of the inner ring gas-distributing groove;

[0007] An outer ring fire cover is arranged above the outer ring air dividing groove and is used for sealing the outer ring air dividing groove. The outer ring fire cover includes a fire cover top surface and a fire cover inner ring surface. The fire cover inner ring surface faces one side of the inner ring air dividing groove. The outer ring fire cover is provided with an outer ring fire groove. The outer ring fire groove is located at the junction of the fire cover top surface and the fire cover inner ring surface, and one side of the outer ring fire groove extends to the fire cover top surface, and the other side extends to the fire cover inner ring surface.

[0008] In an optional embodiment, the inner annular surface of the fire cover includes a first annular surface at the bottom and a second annular surface at the top, the diameter of the second annular surface gradually increases from bottom to top, the second annular surface is connected to the top surface of the fire cover, and the portion of the outer ring fire groove extending to the inner annular surface of the fire cover is located on the second annular surface.

[0009] In an optional embodiment, the top surface of the fire cover is a curved surface, the top surface of the fire cover gradually slopes downward from the inside to the outside along the diameter direction, and the generatrix of the top surface of the fire cover is a straight line and / or a curve.

[0010] In an optional embodiment, the outer ring fire cover includes:

[0011] A flame stabilizing ring connected to the inner groove wall, wherein a groove is formed on the top of the flame stabilizing ring;

[0012] The outer fire cover comprises an outer ring wall and a top cover, wherein the top cover is connected to the upper edge of the outer ring, the outer ring wall is connected to the outer groove wall, and the top cover is connected to the flame stabilizing ring, so that the groove forms the outer ring fire groove.

[0013] In an optional embodiment, the top of the flame stabilizing ring includes a first top surface and a second top surface, the first top surface is lower than the second top surface, the first top surface is located on the outside of the second top surface, the top cover is connected to the first top surface, and the top surface of the top cover and the second top surface form the fire cover top surface of the outer ring fire cover.

[0014] In an optional embodiment, the flame stabilizing ring includes:

[0015] A vertical section, the lower end of which is connected to the inner groove wall, and the vertical section is cylindrical;

[0016] The reducing section has its lower end connected to the vertical section, the reducing section is in a conical cylindrical shape, the diameter of the reducing section gradually increases from bottom to top, and the reducing section is provided with the groove.

[0017] In an optional embodiment, the angle between the center plane of the groove and the center line of the flame stabilizing ring is an acute angle.

[0018] In an optional embodiment, the center line of the outer ring fire groove is tilted in the horizontal direction to form an inward rotating flame; the center line of the outer ring fire groove is tilted upward in the vertical direction.

[0019] According to a second aspect of the embodiments of the present invention, a burner is provided, comprising the flame distributor described in the embodiments of the present invention.

[0020] According to a third aspect of the embodiments of the present invention, a gas stove is provided, comprising the burner according to the embodiments of the present invention.

[0021] An embodiment of the present invention has the following advantages or beneficial effects:

[0022] The fire divider of the embodiment of the present invention includes a fire divider seat and an outer ring fire cover, the fire divider seat includes an outer ring gas dividing groove and an inner ring gas dividing groove, the outer ring gas dividing groove includes a groove bottom, an inner groove wall and an outer groove wall, the outer groove wall surrounds the outside of the inner groove wall, the groove bottom connects the inner groove wall and the outer groove wall, the outer groove wall, the groove bottom and the inner groove wall form the outer ring gas dividing groove, and an annular space is formed between the inner groove wall and the groove wall of the inner ring gas dividing groove; the outer ring fire cover is arranged above the outer ring gas dividing groove, for sealing the outer ring gas dividing groove, the outer ring fire cover includes a fire cover top surface and a fire cover inner ring surface, the fire cover inner ring surface faces one side of the inner ring gas dividing groove, the outer ring fire cover is provided with an outer ring fire groove, the outer ring fire groove is located at the junction of the fire cover top surface and the fire cover inner ring surface, and one side of the outer ring fire groove extends to the fire cover top surface, and the other side extends to the fire cover inner ring surface. The outer ring fire grooves are distributed on the top and inner side of the outer ring fire cover, with a large distribution area. Even with a small diameter burner, sufficient flame area can still be maintained. At the same time, the secondary air supplemented through the top and annular space of the outer ring fire cover is at the root of the flame, which can greatly promote the full combustion of the gas and reduce the carbon monoxide content. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0024] Figure 1 is a schematic structural diagram of a fire distributor according to an exemplary embodiment;

[0025] Figure 2 is a schematic cross-sectional structure diagram of a fire distributor according to an exemplary embodiment;

[0026] Figure 3 is a schematic diagram of an exploded structure of a fire divider according to an exemplary embodiment;

[0027] Figure 4 is a schematic diagram of the combustion principle of an ignition distributor according to an exemplary embodiment;

[0028] Figure 5 is a schematic cross-sectional structure diagram of a flame stabilizing ring according to an exemplary embodiment;

[0029] Figure 6 is a schematic structural diagram of a burner according to an exemplary embodiment;

[0030] Figure 7 is a schematic structural diagram of a gas stove according to an exemplary embodiment.

[0031] Among them, the figure numbers are explained as follows: 1-fire dividing seat, 11-outer ring gas dividing groove, 111-groove bottom, 112-inner groove wall, 113-outer groove wall, 12-inner ring gas dividing groove, 2-outer ring fire cover, 21-fire cover top surface, 22-fire cover inner ring surface, 221-first ring surface, 222-second ring surface, 23-outer ring fire groove, 24-flame stabilizing ring, 241-groove, 242-first top surface, 243-second top surface, 244-vertical section, 245-variable diameter section, 25-outer fire cover, 251-outer ring wall, 252-top cover, 3-inner ring fire cover, 4-annular space, 5-flame, 6-pot support, 7-energy focusing ring. DETAILED DESCRIPTION

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0033] The terms "a", "an", "the", "" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0034] See also Figures 1 to 5 The embodiment of the present invention provides a fire distributor, including a fire distributor seat 1 and an outer ring fire cover 2, the fire distributor seat 1 includes an outer ring gas distributor groove 11 and an inner ring gas distributor groove 12, the outer ring gas distributor groove 11 includes a groove bottom 111, an inner groove wall 112 and an outer groove wall 113, the outer groove wall 113 surrounds the outer side of the inner groove wall 112, the groove bottom 111 connects the inner groove wall 112 and the outer groove wall 113, the outer groove wall 113, the groove bottom 111 and the inner groove wall 112 form the outer ring gas distributor groove 11, and an annular space 4 is formed between the inner groove wall 112 and the groove wall of the inner ring gas distributor groove 12. During combustion, air can be supplemented from the annular space 4 for secondary air to make the combustion more complete.

[0035] The outer ring fire cover 2 is arranged above the outer ring gas dividing groove 11, and is used for sealing the outer ring gas dividing groove 11. The outer ring fire cover 2 includes a fire cover top surface 21 and a fire cover inner ring surface 22. The fire cover inner ring surface 22 faces the inner ring gas dividing groove 12. The outer ring fire cover 2 has an outer ring fire groove 23. The outer ring fire groove 23 is located at the junction of the fire cover top surface 21 and the fire cover inner ring surface 22, and one side of the outer ring fire groove 23 extends to the fire cover top surface 21, and the other side extends to the fire cover inner ring surface 22.

[0036] In the embodiment of the present invention, see Figure 4The outer ring fire groove 23 is located at the junction of the fire cover top surface 21 and the fire cover inner ring surface 22, and one side of the outer ring fire groove 23 extends to the fire cover top surface 21, and the other side extends to the fire cover inner ring surface 22. The distribution area is large. Even if the diameter of the outer ring fire groove 23 of the burner is small, it can still maintain a sufficient flame 5 area to provide a larger heat load. At the same time, since the outer ring fire groove 23 spans the fire cover top surface 21 and the fire cover inner ring surface 22, the root of the flame 5 is also partially located on the fire cover top surface 21 and partially located on the fire cover inner ring surface 22. The secondary air supplemented through the fire cover top surface 21 is supplemented at the root of the flame 5 located on the fire cover top surface 21, and the secondary air supplemented by the annular space 4 is supplemented at the root of the flame 5 at the displacement fire cover inner ring surface 22, which can greatly promote the full combustion of the gas and reduce the carbon monoxide content.

[0037] In some embodiments, see Figure 2 and Figure 5 The inner ring surface 22 of the fire cover includes a first ring surface 221 at the bottom and a second ring surface 222 at the top. The diameter of the second ring surface 222 gradually increases from bottom to top. The second ring surface 222 is connected to the top surface 21 of the fire cover. The portion of the outer ring fire groove 23 extending to the inner ring surface 22 of the fire cover is located on the second ring surface 222. The second ring surface 222 at the top of the outer ring fire cover 2 is inclined outward, so that the diameter of the top of the second ring surface 222 is increased, which is conducive to arranging more outer ring fire grooves 23 and increasing the heat load.

[0038] In some embodiments, see Figure 1 and Figure 2 The top surface 21 of the fire cover is a curved surface, and the top surface 21 of the fire cover gradually slopes downward from the inside to the outside along the diameter direction. The top surface 21 of the fire cover is a curved surface, which is conducive to the secondary compensation air flowing along the top surface 21 of the fire cover, so as to supplement the root of the flame 5. In addition, the top surface 21 of the fire cover can also cooperate with the energy-gathering ring 7 on the pot support 6, so that the cross-section of the supplementary air channel formed between the energy-gathering ring 7 and the top surface 21 of the fire cover is a trumpet shape, and the air flows from the outside to the inside, the supplementary air speed will be faster, and the combustion will be more complete.

[0039] In some embodiments, the generatrix of the fire cover top surface 21 is a straight line and / or a curve. For example, when the generatrix is ​​a straight line, the curved surface of the fire cover top surface 21 can be a conical surface. Alternatively, when the generatrix is ​​a curved surface, the curved surface of the fire cover top surface 21 can be a spherical surface according to the shape of the curve.

[0040] In some embodiments, see Figure 2 and Figure 3The outer ring fire cover 2 includes a flame stabilizing ring 24 and an outer fire cover 25. The flame stabilizing ring 24 is connected to the inner groove wall 112, and a groove 241 is formed on the top of the flame stabilizing ring 24. The outer fire cover 25 includes an outer ring wall 251 and a top cover 252. The top cover 252 is connected to the upper edge of the outer ring. The outer ring wall 251 is connected to the outer groove wall 113, and the top cover 252 is connected to the flame stabilizing ring 24, so that the groove 241 forms an outer ring fire groove 23. The outer ring fire cover 2 includes a flame stabilizing ring 24 and an outer fire cover 25. The groove 241 for forming the outer ring fire groove 23 is formed on the top of the flame stabilizing ring 24, which is easy to process and can make the cross section of the formed outer ring fire groove 23 close to the outer ring gas separation groove 11 not less than the cross section of the outer ring fire groove 23 away from the outer ring gas separation groove 11. When the gas flows from the outer ring gas distribution groove 11 to the outside along the outer ring fire groove 23, the cross-section through which the gas passes is equal or flows from a cross-section with a large area to a cross-section with a small area. The kinetic energy of the gas will remain unchanged or increase, which is conducive to mixing more oxygen and more complete combustion.

[0041] In the embodiment of the present invention, the outer ring fire groove 23 can be formed by cutting. For example, when the outer ring fire cover 2 is an integral structure, cutting can be performed at the junction of the fire cover top surface 21 and the fire cover inner ring surface 22 to form the outer ring fire groove 23 spanning the fire cover top surface 21 and the fire cover inner ring surface 22. When the outer ring fire cover 2 includes a flame stabilizing ring 24 and an outer fire cover 25, a groove 241 is cut at the top of the flame stabilizing ring 24, and after the flame stabilizing ring 24 and the outer fire cover 25 are combined, the groove 241 forms the outer ring fire groove 23.

[0042] In some embodiments, the outer fire cover 25 and the flame stabilizing ring 24 may be abutted or overlapped. For example, the top cover 252 of the outer fire cover 25 abuts against the flame stabilizing ring 24. Alternatively, the top cover 252 of the outer fire cover 25 abuts against the outer side of the top of the flame stabilizing ring 24. The outer fire cover 25 and the flame stabilizing ring 24 are connected to form an outer ring fire cover 2, and an outer ring fire groove 23 is formed at the groove 241. The gas in the outer ring gas distribution groove 11 flows out from the outer ring fire groove 23 and burns to generate flame 5. The secondary supplementary air is supplemented to the root of the flame 5 from both sides to promote more complete combustion.

[0043] In some embodiments, see Figure 5 The top of the flame stabilizing ring 24 includes a first top surface 242 and a second top surface 243. The first top surface 242 is lower than the second top surface 243 and is located outside the second top surface 243. The top cover 252 is connected to the first top surface 242. The top surface of the top cover 252 and the second top surface 243 form the fire cover top surface 21 of the outer ring fire cover 2. The first top surface 242 and the second top surface 243 form a step structure. The top cover 252 of the outer fire cover 25 cooperates with the step structure to achieve overlap with the flame stabilizing ring 24. The outer fire cover 25 is connected to the flame stabilizing ring 24 through the step structure. The sealing between the two is good, so that the gas only flows out from the outer ring fire groove 23.

[0044] The outer fire cover 25 cooperates with the step structure at the top of the flame stabilizing ring 24 to make the top surface of the top cover 252 flush with the second top surface 243, forming a smooth fire cover top surface 21 of the outer ring fire cover 2.

[0045] In some embodiments, see Figure 5 The flame stabilizing ring 24 includes a vertical section 244 and a diameter reducing section 245. The lower end of the vertical section 244 is connected to the inner groove wall 112, and the vertical section 244 is cylindrical. The lower end of the diameter reducing section 245 is connected to the vertical section 244, and the diameter reducing section 245 is conical. The diameter of the diameter reducing section 245 gradually increases from bottom to top, and the diameter reducing section 245 is provided with a groove 241. The second annular surface 222 of the inner annular surface 22 of the fire cover is located in the diameter reducing section 245, and the first annular surface 221 is located in the vertical section 244. The diameter reducing section 245 is inclined outwardly relative to the vertical section 244, and the groove 241 is provided on the diameter reducing section 245, so as to form the outer ring fire groove 23 after being combined with the outer fire cover 25. The groove 241 is provided on the diameter reducing section 245, so as to make the outer ring fire groove 23 tilt upward, so that the flame 5 formed is at the upper side of the outer ring fire cover 2, and the flame is more fully burned through the secondary air supplement.

[0046] The bottom of the flame stabilizing ring 24 can form a step structure that matches the inner groove wall 112 to connect the flame stabilizing ring 24 to the inner groove wall 112. Of course, the top of the inner groove wall 112 can also form a step structure that matches the bottom of the flame stabilizing ring 24 to connect the flame stabilizing ring 24 to the inner groove wall 112.

[0047] The bottom of the outer fire cover 25 can form a step structure that matches the outer groove wall 113, so that the outer fire cover 25 is connected to the outer groove wall 113. Of course, the top of the outer groove wall 113 can also form a step structure that matches the bottom of the outer fire cover 25, so that the outer fire cover 25 is connected to the outer groove wall 113.

[0048] In some embodiments, the angle between the center plane of the groove 241 and the center line of the flame stabilizing ring 24 is an acute angle. When cutting the groove 241 at the top of the flame stabilizing ring 24, the plane where the tool is located is inclined relative to the center line of the flame stabilizing ring 24, so that a certain angle is formed between the center plane of the groove 241 and the center line of the flame stabilizing ring 24, thereby increasing the cross-sectional area of ​​the groove 241, that is, increasing the cross-sectional area of ​​the outer ring fire groove 23, and increasing the maximum heat load.

[0049] In some embodiments, the center line of the outer ring fire groove 23 is tilted in the horizontal direction to form the inner rotating flame 5. According to the tilt direction of the center line of the outer ring fire groove 23 in the horizontal direction, the rotation direction of the inner rotating flame 5 can be counterclockwise or clockwise.

[0050] In some embodiments, the center line of the outer ring fire groove 23 is tilted upward in the vertical direction. The center line of the outer ring fire groove 23 is tilted upward, which can make the flame 5 tilt upward, avoiding that the flame 5 generated by the outer ring fire groove 23 is too close to the inner ring gas distribution groove 12 when the heat load is large, and the combustion is not complete.

[0051] When the center line of the outer ring fire groove 23 is inclined in both the horizontal direction and the vertical direction, the outer ring fire groove 23 generates an upwardly inclined inwardly rotating flame 5 .

[0052] See also Figure 6 An embodiment of the present invention provides a burner, including the flame distributor of the embodiment of the present invention.

[0053] See also Figure 7 An embodiment of the present invention provides a gas stove, including a burner according to an embodiment of the present invention.

[0054] In some embodiments, see Figure 4 and Figure 7 The gas stove of the embodiment of the present invention further comprises a pot support 6, on which an energy-gathering ring 7 is provided. The cross section of the space formed between the energy-gathering ring 7 and the top surface of the outer ring fire cover 2 along the diameter direction of the burner is a trumpet-shaped shape with a larger inner side and a smaller outer side. The secondary supplementary air flows from the outside to the inside between the energy-gathering ring 7 and the top surface of the outer ring fire cover 2, with a faster speed and more complete combustion.

[0055] In some embodiments, the energy focusing ring 7 gradually tilts downward from outside to inside along the diameter direction. The energy focusing ring 7 gradually tilts downward from outside to inside can cooperate with the fire cover top surface 21 gradually tilted upward from inside to outside, and the space formed is accelerated by secondary supplementary air to promote full combustion.

[0056] In the embodiments of the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0057] In the description of the embodiments of the present invention, it needs to be understood that the directions or positional relationships indicated by the terms "upper" and "lower" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0058] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire distributor, characterized in that: include: A fire distribution seat (1), comprising an outer ring gas distribution groove (11) and an inner ring gas distribution groove (12); the outer ring gas distribution groove (11) comprises a groove bottom (111), an inner groove wall (112) and an outer groove wall (113); the outer groove wall (113) surrounds the outer side of the inner groove wall (112); the groove bottom (111) connects the inner groove wall (112) and the outer groove wall (113); the outer groove wall (113), the groove bottom (111) and the inner groove wall (112) enclose the outer ring gas distribution groove (11); an annular space (4) is formed between the inner groove wall (112) and the groove wall of the inner ring gas distribution groove (12); An outer ring fire cover (2) is arranged above the outer ring gas distribution groove (11) and is used to seal the outer ring gas distribution groove (11). The outer ring fire cover (2) includes a fire cover top surface (21) and a fire cover inner ring surface (22). The fire cover inner ring surface (22) faces the inner ring gas distribution groove (12). The outer ring fire cover (2) has an outer ring fire groove (23). The outer ring fire groove (23) is located at the junction of the fire cover top surface (21) and the fire cover inner ring surface (22). One side of the outer ring fire groove (23) extends to the fire cover top surface (21), and the other side extends to the fire cover inner ring surface (22).

2. The ignition device according to claim 1, characterized in that: The inner annular surface (22) of the fire cover comprises a first annular surface (221) at the bottom and a second annular surface (222) at the top. The diameter of the second annular surface (222) gradually increases from bottom to top. The second annular surface (222) is connected to the top surface (21) of the fire cover. The portion of the outer ring fire groove (23) extending to the inner annular surface (22) of the fire cover is located on the second annular surface (222).

3. The ignition device according to claim 1, characterized in that: The fire cover top surface (21) is a curved surface, the fire cover top surface (21) gradually slopes downward from the inside to the outside along the diameter direction, and the generatrix of the fire cover top surface (21) is a straight line and / or a curve.

4. The ignition distributor according to claim 1, characterized in that: The outer ring fire cover (2) comprises: A flame stabilizing ring (24) connected to the inner groove wall (112), wherein a groove (241) is formed on the top of the flame stabilizing ring (24); The outer fire cover (25) comprises an outer ring wall (251) and a top cover (252), wherein the top cover (252) is connected to the upper edge of the outer ring, the outer ring wall (251) is connected to the outer groove wall (113), and the top cover (252) is connected to the flame stabilizing ring (24), so that the groove (241) forms the outer ring fire groove (23).

5. The ignition distributor according to claim 4, characterized in that: The top of the flame stabilizing ring (24) includes a first top surface (242) and a second top surface (243), wherein the first top surface (242) is lower than the second top surface (243), and the first top surface (242) is located on the outside of the second top surface (243), and the top cover (252) is connected to the first top surface (242), and the top surface of the top cover (252) and the second top surface (243) form the fire cover top surface (21) of the outer ring fire cover (2).

6. The ignition distributor according to claim 5, characterized in that: The flame stabilizing ring (24) comprises: A vertical section (244), the lower end of which is connected to the inner groove wall (112), and the vertical section (244) is cylindrical; The reducing section (245) has a lower end connected to the vertical section (244). The reducing section (245) is in a conical cylindrical shape. The diameter of the reducing section (245) gradually increases from bottom to top. The reducing section (245) is provided with the groove (241).

7. The ignition distributor according to claim 4, characterized in that: The included angle between the central plane of the groove (241) and the central line of the flame stabilizing ring (24) is an acute angle.

8. The ignition distributor according to claim 1, characterized in that: The center line of the outer ring fire groove (23) is tilted in the horizontal direction to form an inwardly rotating flame (5); the center line of the outer ring fire groove (23) is tilted upward in the vertical direction.

9. A burner, characterized in that: The invention comprises the fire divider as described in any one of claims 1 to 8.

10. A gas stove, characterized in that: Comprising the burner as claimed in claim 9.