CN217685001U - Fire lid and combustor - Google Patents

Abstract

The application relates to the technical field of kitchen equipment, discloses one kind and this disclosed embodiment provides a fire lid, includes: the top wall is circular; an outer panel extending downwardly from an outer edge of the top wall, comprising: the flame mixing chamber comprises an outer wall surface and an inner wall surface, wherein the outer wall surface is provided with a flame stabilizing groove, the inner wall surface is provided with a plurality of concave platforms which are distributed at intervals corresponding to the flame stabilizing groove, each concave platform is provided with a flame stabilizing hole, the flame stabilizing groove is communicated with the flame stabilizing holes, and the flame stabilizing holes are communicated with the gas mixing chamber. The flame cover is beneficial to the flame stabilizing groove to quickly transfer flame, and can play a role in stabilizing the flame of the external fire hole; and the inner wall surface of the outer side plate is provided with a concave platform, and the flame stabilizing holes are arranged on the concave platform, so that the turbulence effect on the air-fuel mixture can be improved, the air flow velocity is reduced, the stability of the air flow flowing out of the flame stabilizing holes is improved, and the flame stabilizing effect of the flame stabilizing groove is enhanced. The present application further discloses a combustor.

Description

Fire caps and burners

technical field

The present application relates to the technical field of kitchen equipment, for example, to a fire cover and a burner.

Background technique

The fire cover is an important part of the burner in the gas cooker, and whether its structural design is reasonable has an important impact on the performance of the entire burner. During the use of the burner, in order to ensure the stability of the flame combustion, flame stabilization holes are usually set on the flame cover to ensure the stable combustion of the flame.

In the related art, the fire cover includes a fire cover body, the fire cover body is provided with a gas chamber, and the side wall of the fire cover body communicates with the gas chamber and is provided with fire holes and flame stabilizing holes distributed along the circumferential direction.

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art: the air-fuel mixture flows out of the flame-stabilizing hole at a high flow rate, resulting in poor flame-stabilizing effect of the flame-stabilizing hole.

Utility model content

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is presented below. The summary is not intended to be an extensive overview nor to identify key/important elements or to delineate the scope of these embodiments, but rather serves as a prelude to the detailed description that follows.

The embodiment of the present disclosure provides a fire cover and a burner, which can reduce the flow rate of the air-fuel mixture flowing out of the flame-stabilizing hole, and enhance the stability of the air-fuel mixture flowing out of the flame-stabilizing hole, thereby improving the flame-stabilizing effect of the flame-stabilizing hole .

An embodiment of the present disclosure provides a fire cover, including:

The top wall is circular;

The outer plate extends downward from the outer edge of the top wall, including: the outer wall surface and the inner wall surface, the outer wall surface is provided with flame-stabilizing grooves, and the inner wall surface is provided with a plurality of recesses distributed at intervals corresponding to the flame-stabilizing grooves. All are equipped with flame stabilizing holes, the flame stabilizing grooves are connected with the flame stabilizing holes, and the flame stabilizing holes are connected with the gas mixing chamber.

In some embodiments, the channel of the flame stabilizing hole extends along the direction in which the inner wall faces the outer wall and slopes upward.

In some embodiments, the concave table is rectangular in shape, and the cross-sectional shape of the flame stabilizing hole is circular.

In some embodiments, the outer plate is also provided with an outer fire hole penetrating the outer wall surface and the inner wall surface, and the outer fire hole communicates with the flame stabilizing groove.

In some embodiments, the channel of the outer fire hole extends along the direction in which the inner wall faces the outer wall and slopes upward.

In some embodiments, the diameter of the flame holding hole is smaller than the diameter of the outer flame hole.

In some embodiments, the number of outer fire holes is multiple and arranged at intervals along the circumference of the outer plate, the number of recesses is multiple and arranged at intervals along the circumference of the outer plate, and the recesses are arranged on adjacent outer fire the area between the holes.

In some embodiments, the inner wall surface protrudes toward the center of the circle to form a step shape, and the concave platform is recessed relative to the inner wall surface.

In some embodiments, the recess is disposed corresponding to the lower portion of the outer fire hole.

An embodiment of the present disclosure also provides a burner, including:

A fire cover as provided in any one of the foregoing embodiments;

The burner is arranged under the fire cover.

The fire cover and burner provided by the embodiments of the present disclosure can achieve the following technical effects: the fire cover is provided with a flame stabilizing groove on the outer plate, and the flame stabilizing groove communicates with the air mixing chamber through the flame stabilizing hole, and can lead the air-fuel mixture to the stable The flame groove is conducive to the rapid transmission of the flame in the flame stabilizing groove, and can play a role in stabilizing the flame of the flame in the outer flame hole; and, the inner wall surface of the outer plate is provided with a concave platform, and the flame stabilizing hole is arranged on the concave platform, so that It can improve the turbulence effect on the air-fuel mixture, reduce the flow velocity of the airflow, and then improve the stability of the airflow after it flows out from the flame-stabilizing hole, and enhance the flame-stabilizing effect of the flame-stabilizing groove.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the corresponding drawings, and these exemplifications and drawings do not constitute a limitation to the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings are not limited to scale and in which:

FIG. 1 is a schematic structural view of a fire cover provided by an embodiment of the present disclosure;

Figure 2 is an enlarged view of part H of Figure 1;

Fig. 3 is a schematic structural diagram of another fire cover provided by an embodiment of the present disclosure;

Fig. 4 is a partial cross-sectional view of another fire cover provided by an embodiment of the present disclosure;

FIG. 5 is a schematic structural view of a furnace head provided by an embodiment of the present disclosure;

Fig. 6 is a schematic structural diagram of a burner provided by an embodiment of the present disclosure.

Reference signs:

10. Furnace head; 30. Gas flow channel; 40. Fire cover; 410. Top wall; 420. Inner panel; 430. Outer panel; 440. Gas mixing chamber; 450. Outer fire hole; 460. Inner fire hole; 4601 , the first fire hole; 4602, the second fire hole; 80, the flame-stabilizing groove; 810, the concave platform; 820, the flame-stabilizing hole.

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and tanks may be shown simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances so as to facilitate the embodiments of the disclosed embodiments described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear" etc. are based on the orientations or positional relationships shown in the drawings. Positional relationship. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit that the indicated tank, element or component must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, some of the above terms may be used to indicate other meanings besides orientation or positional relationship, for example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. Those skilled in the art can understand the specific meanings of these terms in the embodiments of the present disclosure according to specific situations.

In addition, the terms "setting", "connecting" and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or two water tanks, components or Internal connectivity between components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure according to specific situations.

Unless stated otherwise, the term "plurality" means two or more.

It should be noted that, in the case of no conflict, the embodiments and the features in the embodiments of the present disclosure may be combined with each other.

1 to 3, the embodiment of the present disclosure provides a fire cover 40, including a top wall 410 and an outer plate 430, wherein the top wall 410 is circular; the outer plate 430 extends from the outer edge of the top wall 410 to Extending down, including: the outer wall and the inner wall, the outer wall is provided with a flame-stabilizing groove 80, and the inner wall is provided with a plurality of spaced recesses 810 corresponding to the flame-stabilizing groove 80, and each recess 810 is provided with a flame-stabilizing hole 820 , the flame stabilizing groove 80 communicates with the flame stabilizing hole 820 , and the flame stabilizing hole 820 communicates with the gas mixing chamber 440 .

The fire cover 40 provided by the embodiment of the present disclosure is provided with a flame-stabilizing groove 80 on the outer plate 430, and the flame-stabilizing groove 80 communicates with the gas mixing chamber 440 through the flame-stabilizing hole 820, and can lead the air-fuel mixture to the flame-stabilizing groove 80, thereby It is beneficial to the flame-stabilizing groove 80 to transmit the flame quickly, and the flame of the outer fire hole 450 can play a role of stabilizing the flame; and, the inner wall surface of the outer plate 430 is provided with a concave platform 810, and the flame-stabilizing hole 820 is arranged on the concave platform 810, so that , can improve the turbulence effect on the air-fuel mixture, reduce the flow velocity of the airflow, and then improve the stability of the airflow after flowing out from the flame-stabilizing hole 820, and enhance the flame-stabilizing effect of the flame-stabilizing groove 80.

The height of the recessed table 810 is slightly lower than the inner wall surface, and the flame-stabilizing hole 820 is arranged in the recessed table 810. When the air-fuel mixture flows to the flame-stabilizing hole 820, part of the airflow hits the surface of the recessed table 810, which can reduce the overall airflow velocity, so that When the air-fuel mixture flows from the flame-stabilizing hole 820 to the flame-stabilizing groove 80 , the flow is more stable.

The flame stabilizing groove 80 extends along the circumferential direction of the outer wall surface and is annular. The flame-stabilizing holes 820 are provided on the inner wall corresponding to the flame-stabilizing grooves 80 , and there are a plurality of them distributed at intervals along the circumferential direction of the inner plate 420 , so the multiple flame-stabilizing holes 820 also form a ring.

As shown in Figures 1 to 5, a gas mixing chamber 440 is usually provided under the top wall 410 of the fire cover 40, and the air-fuel mixture flows from the gas flow channel 30 of the burner 10 into the gas mixing chamber 440, and the gas mixing chamber 440 and the The outer fire hole 450 is communicated so that the air-fuel mixture can flow out from the outer fire hole 450 to form an outer ring fire after ignition; the flame stabilization hole 820 is communicated with the gas mixing chamber 440 so that part of the air-fuel mixture can also flow out from the flame stabilization hole 820 flows out and enters the flame stabilizing groove 80, so that the flame stabilizing groove 80 can burn to form a flame.

In this application, "outer" refers to the side away from the center of the circle, and "inner" refers to the side closer to the center of the circle.

In some embodiments, the channel of the flame stabilizing hole 820 extends along the direction in which the inner wall faces the outer wall and slopes upward.

The channel of the flame-stabilizing hole 820 is inclined upwards, so that the air-fuel mixture can pass through the flame-stabilizing hole 820 to reach the flame-stabilizing groove 80 smoothly, and the air-fuel mixture can flow stably in the flame-stabilizing hole 820 to exert the flame-stabilizing effect of the outer ring fire. Effect.

Optionally, the angle between the channel of the flame stabilizing hole 820 and the horizontal direction is in the range of 40°-60°. Within this range, the flame stabilizing effect of the flame stabilizing groove 80 is better. Optionally, the angle between the channel of the flame stabilizing hole 820 and the horizontal direction is 40°, 45°, 50°, 55° or 60°.

In some embodiments, the concave platform 810 is rectangular in shape, and the cross-sectional shape of the flame stabilizing hole 820 is circular.

In the fire cover 40 provided by the embodiment of the present disclosure, the rectangular concave platform 810 is provided to facilitate the turbulence of the airflow. The flame stabilizing hole 820 with a circular cross section is conducive to the uniform flow of air in the hole.

Optionally, the diameters of the plurality of flame-stabilizing holes 820 are the same.

In this embodiment, the diameters of the flame-stabilizing holes 820 are the same so that the output of the air-fuel mixture in each flame-stabilizing hole 820 is basically the same, so that the flames formed after the air-fuel mixture in the flame-stabilizing groove 80 is ignited are basically the same in size , which is conducive to enhancing the flame stabilization effect.

In some embodiments, the fire cover 40 includes a top wall 410 and an outer plate 430, wherein the top wall 410 is circular; the outer plate 430 extends downward from the outer edge of the top wall 410, including: an outer wall and an inner wall, The outer wall is provided with a flame-stabilizing groove 80, and the inner wall is provided with a plurality of recesses 810 distributed at intervals corresponding to the flame-stabilizing groove 80. Each recess 810 is provided with a flame-stabilizing hole 820, and the flame-stabilizing groove 80 and the flame-stabilizing hole 820 The flame stabilizing hole 820 communicates with the gas mixing chamber 440. The channel of the flame stabilizing hole 820 extends along the direction of the inner wall facing the outer wall and slopes upward. shape.

The fire cover 40 provided by the embodiment of the present disclosure can improve the turbulence effect on the air-fuel mixture near the flame-stabilizing hole 820, reduce the flow velocity of the air-fuel mixture in the flame-stabilizing hole 820, and make the flame-stabilizing groove 80 place Flame is steady, even, promotes the stable flame effect of flame stabilizing groove 80 to fire cover 40 outer ring fires.

In some embodiments, the outer plate 430 is further provided with an outer fire hole 450 penetrating the outer wall surface and the inner wall surface, and the outer fire hole 450 communicates with the flame stabilizing groove 80 .

The outer fire hole 450 is usually communicated with the gas mixing chamber 440, so that the air-fuel mixture in the gas mixing chamber 440 flows out from the outer fire hole 450, so that the outer fire hole 450 can form an outer ring fire. In this embodiment, the outer flame hole 450 is also communicated with the flame-stabilizing groove 80, so that part of the air-fuel mixture in the flame-stabilizing groove 80 can enter the channel of the outer flame hole 450, which improves the turbulence effect on the airflow and makes the flame Combustion is smoother.

As shown in FIGS. 1 to 4 , optionally, there are multiple outer fire holes 450 arranged at intervals along the circumference of the outer plate 430 . In this way, it is beneficial for the outer ring fire formed at the outer fire hole 450 to burn evenly along the circumferential direction, so that the pan can be evenly heated. Optionally, the heights of the plurality of outer fire holes 450 are the same, so that the flame heights of the outer ring fires are the same, and the flame height directions of the outer ring flames of the fire cover 40 burn evenly.

Optionally, the cross sections of the plurality of outer fire holes 450 are circular and have the same size. In this way, it is beneficial for the outer fire hole 450 to transmit the air-fuel mixture, and the same cross-sectional size can make the delivery volume of the air-fuel mixture of each outer fire hole 450 the same, so that the flame size formed at each outer fire hole 450 is the same, so that The flame of the outer ring fire is more uniform, which is conducive to evenly heating the pan.

As shown in FIG. 4 , in some embodiments, the channel of the outer fire hole 450 extends along the direction in which the inner wall faces the outer wall and slopes upward. In the fire cover 40 provided by the embodiment of the present disclosure, the flame formed at the outer fire hole 450 has a better heating effect on the pot.

Optionally, the angle between the outer fire hole 450 and the horizontal direction is in the range of 40°-60°. Within this range, the heat exchange effect between the flame at the outer fire hole 450 and the bottom of the pot is better, and the natural ejection effect of the airflow at the outer fire hole 450 on the secondary air can be improved. If the included angle is less than 40°, the heat exchange effect between the outer ring fire and the bottom of the pot formed by the outer fire hole 450 is poor, and the natural ejection effect of the secondary air is not good; if the included angle is greater than 60°, the outer ring The effect of fire on the natural ejection of secondary air is too great.

As shown in conjunction with FIGS. 1 to 3 , in some embodiments, the diameter of the flame stabilization hole 820 is smaller than the diameter of the outer flame hole 450 . Like this, the flow rate of the air-fuel mixture in the flame-stabilizing hole 820 is less than the flow rate of the air-fuel mixture in the outer fire hole 450, so that the outer fire hole 450 forms an outer ring fire, which mainly plays a role in heating the pot. The flame-stabilizing hole 820 Flame stabilization is performed on the outer ring fire, which mainly plays the role of flame stabilization. If the aperture of the flame stabilizing hole 820 is greater than or equal to the aperture of the outer flame hole 450, the flame at the outer flame hole 450 may interfere and affect the heating performance of the outer flame.

Optionally, the flame stabilizing holes 820 and the outer flame holes 450 are alternately arranged. In this way, on the one hand, the area of the outer plate 430 can be reasonably utilized, and on the other hand, the influence of the flame stabilizing hole 820 on the airflow of the outer flame hole 450 can be reduced as much as possible.

In some embodiments, the number of outer fire holes 450 is multiple and arranged at intervals along the circumference of the outer plate 430, the number of recesses 810 is multiple and arranged at intervals along the circumference of the outer plate 430, and the recesses 810 are arranged on The area between adjacent outer fire holes 450 .

In this way, the flame stabilizing hole 820 can be positioned between adjacent outer flame holes 450, so that part of the air-fuel mixture enters the flame stabilizing groove 80 from the flame stabilizing hole 820 between the outer flame holes 450, and part of the air-fuel mixture Gas maintains a steady flow in the outer fire hole 450.

In some embodiments, the fire cover 40 includes a top wall 410 and an outer plate 430, wherein the top wall 410 is circular; the outer plate 430 extends downward from the outer edge of the top wall 410, including: an outer wall and an inner wall, The outer wall is provided with a flame-stabilizing groove 80, and the inner wall is provided with a plurality of recesses 810 distributed at intervals corresponding to the flame-stabilizing groove 80. Each recess 810 is provided with a flame-stabilizing hole 820, and the flame-stabilizing groove 80 and the flame-stabilizing hole 820 The flame stabilizing hole 820 communicates with the gas mixing chamber 440; the outer plate 430 is also provided with an outer flame hole 450 penetrating the outer wall surface and the inner wall surface, and the outer flame hole 450 communicates with the flame stabilizing groove 80 and the gas mixing chamber 440; The slot 80 is located below the outer fire hole 450 .

With the fire cover 40 provided by the embodiment of the present disclosure, the flame stabilizing groove 80 can stabilize the flame at the outer flame hole 450, and the concave table 810 can turbulence the airflow at the flame stabilizing groove 80, so that the flame stabilizing groove 80 can The air flow velocity is reduced, thereby enhancing the flame stabilizing effect of the flame stabilizing groove 80 on the outer ring fire, and improving the heating effect on the pot.

In some embodiments, the inner wall surface protrudes toward the center of the circle to form a step shape, and the concave platform 810 is recessed relative to the inner wall surface.

The inner wall surface is stepped to make the fire cover 40 better sealed when it is assembled with the burner head 10, to avoid air leakage, and to make the outer fire hole 450 and the flame stabilizing hole 820 have a certain hole depth, which is conducive to the transmission of air and fuel. mixed gas. If the concave platform 810 is recessed relative to the inner wall surface, the height of the concave platform 810 is smaller than the height of the inner wall surface, and part of the air-fuel mixture that intends to enter the flame stabilization hole 820 can hit the table surface of the concave platform 810, causing turbulence to the nearby airflow effect, and reduce the flow velocity of the airflow entering the flame-stabilizing hole 820, thereby improving the flame-stabilizing effect of the flame-stabilizing groove 80.

Optionally, the concave platform 810 runs through two stepped surfaces of the stepped inner wall surface. In this way, the processing and manufacturing of the concave platform 810 is facilitated.

Optionally, the depth of the concave platform 810 is 0.5 mm˜1 mm. In this way, a turbulent effect on the airflow can be achieved.

In some embodiments, the concave platform 810 is disposed corresponding to the lower portion of the outer fire hole 450 . In this way, the flame-stabilizing hole 820 provided on the concave platform 810 can communicate with the flame-stabilizing groove 80 located at the lower part of the outer flame hole 450 .

1 to 3, in some embodiments, the fire cover 40 includes: a top wall 410, an outer plate 430 and an inner plate 420, wherein the top wall 410 is circular; the outer plate 430 and the top wall 410 The outer edges are connected and located below the top wall 410, and an outer fire hole 450 is provided; the inner side plate 420 is connected to the inner edge of the top wall 410, and is located below the top wall 410, and an inner fire hole 460 is provided. The hole 460 includes a first fire hole 4601 and a second fire hole 4602 arranged on both sides of the first fire hole 4601. The diameter of the second fire hole 4602 is smaller than that of the first fire hole 4601; the outer plate 430 includes: an outer wall and an inner wall On the wall, the outer wall is provided with a flame-stabilizing groove 80, and the inner wall is provided with a plurality of recesses 810 distributed at intervals corresponding to the flame-stabilizing groove 80, and each recess 810 is provided with a flame-stabilizing hole 820, and the flame-stabilizing groove 80 and the The holes 820 communicate with each other, and the flame stabilizing hole 820 communicates with the air mixing chamber 440 .

The fire cover 40 provided by the embodiment of the present disclosure has an outer fire hole 450 and an inner fire hole 460 at the same time, so that the fire cover 40 is no longer divided into the inner fire cover 40 and the outer fire cover 40 with independent structures, but is integrally formed to avoid burning There are too many parts of the device, the installation is more convenient, and at the same time, it is easy to process and saves the cost.

And, the inner fire hole 460 of the fire cover 40 provided by the embodiment of the present disclosure is provided with a first fire hole 4601 and a second fire hole 4602 arranged on both sides of the first fire hole 4601, and the diameter of the second fire hole 4602 is limited to less than The first fire hole 4601, like this, when gas flows out and burns from the first fire hole 4601 and the second fire hole 4602, the flame of the second fire hole 4602 can carry out flame stabilization to the flame of the first fire hole 4601, makes the gas flow in the fire Combustion on the cover 40 is more stable, and the gas can be fully combusted to prevent the generation of the phenomenon of leaving the flame.

The fire cover 40 provided by the embodiment of the present disclosure can also improve the turbulence effect on the air-fuel mixture, reduce the flow velocity of the airflow, further improve the stability of the airflow after flowing out of the flame-stabilizing hole 820 , and enhance the flame-stabilizing effect of the flame-stabilizing groove 80 .

In some embodiments, the number of inner fire holes 460 is multiple and distributed along the inner side plate 420 at intervals. The inner fire holes 460 are distributed along the inner side plate 420 , the inner side plate 420 is circular, and a plurality of inner fire holes 460 are also surrounded by a circular shape. The number of inner fire holes 460 is multiple, and the inner fire holes 460 here can be considered as a group of holes including a group of fire holes, and each inner fire hole 460 includes a first fire hole 4601 and two fire holes arranged on the first fire hole 4601 The second fire hole 4602 on the side. A plurality of inner fire holes 460 are distributed at intervals along the inner plate 420, so that the flame formed by the combustion of the air-fuel mixture can be evenly distributed on the object to be heated, and when the fire cover 40 is applied to the burner, the heating of the burner can be improved Effect. The inner fire hole 460 cooperates with the outer fire hole 450, which can make the distribution of gas more uniform when burning on the fire cover 40, which is beneficial to fully heating the pot body.

As shown in FIG. 6 , an embodiment of the present disclosure also provides a burner, including the fire cover 40 and the burner head 10 provided in any one of the above embodiments, and the burner head 10 is arranged under the fire cover 40 . The burner provided by the embodiment of the present disclosure adopts the flame cover 40, which can improve the turbulence effect on the air-fuel mixture, reduce the airflow velocity, and then improve the stability of the airflow after it flows out from the flame-stabilizing hole 820, and strengthen the flame-stabilizing groove 80 flame stabilization effect.

The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A fire cover, comprising:

the top wall is annular;

an outer panel extending downwardly from an outer edge of the top wall, comprising: the outer wall surface is provided with a flame stabilizing groove, the inner wall surface corresponds to the flame stabilizing groove and is provided with a plurality of concave platforms which are distributed at intervals, each concave platform is provided with a flame stabilizing hole, the flame stabilizing groove is communicated with the flame stabilizing holes, and the flame stabilizing holes are communicated with the gas mixing chamber.

2. The fire cover according to claim 1, wherein the duct of the flame stabilizing hole extends in a direction in which the inner wall faces the outer wall surface and is inclined upward.

3. The fire cover according to claim 1, wherein the shape of the concave platform is rectangular, and the cross-sectional shape of the flame stabilizing holes is circular.

4. The fire cover according to claim 1, 2 or 3, wherein the outer side plate is further provided with an outer fire hole penetrating the outer wall surface and the inner wall surface, and the outer fire hole is communicated with the flame holding groove.

5. The fire cover of claim 4, wherein the ports of the outer fire holes extend in a direction in which the inner wall faces the outer wall surface and are inclined upward.

6. The fire cover according to claim 4, wherein the hole diameter of the flame stabilizing holes is smaller than the hole diameter of the outer fire holes.

7. The fire cover of claim 4, wherein said outer fire holes are plural and spaced circumferentially along said outer panel, said lands being disposed in regions between adjacent ones of said outer fire holes.

8. The fire cover according to claim 4, wherein the inner wall surface is convex toward the center of the circle to form a step shape, and the concave platform is concave relative to the inner wall surface.

9. The fire cover of claim 8, wherein the concave platform is disposed corresponding to a lower portion of the outer fire hole.

10. A burner, comprising:

a fire cover as claimed in any one of claims 1 to 9;

the furnace end is arranged below the fire cover.

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