CN221197466U

CN221197466U - Inner ring fire cover and gas stove

Info

Publication number: CN221197466U
Application number: CN202322955299.3U
Authority: CN
Inventors: 任富佳; 曾庆中
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2023-10-31
Filing date: 2023-10-31
Publication date: 2024-06-21
Anticipated expiration: 2033-10-31

Abstract

The application relates to the technical field of cooking equipment, in particular to an inner ring fire cover and a gas stove. The inner ring fire cover is provided with a gas mixing chamber, a main ignition hole and a flame stabilizing hole; the main ignition hole is arranged opposite to the ignition needle, and the flame stabilizing hole is arranged at intervals with the main ignition hole; the air outlet end of the main ignition hole and the air outlet end of the flame stabilizing hole are both communicated with the circumferential side wall of the inner ring flame cover, and the air inlet end of the main ignition hole and the air inlet end of the flame stabilizing hole are both communicated with the air mixing chamber of the inner ring flame cover. The inner ring fire cover and the gas stove are characterized in that the flame stabilizing holes are additionally formed in the circumferential side wall of the inner ring fire cover, the main ignition holes and the flame stabilizing holes can supply mixed gas to the circumferential side wall of the inner ring fire cover, when the mixed gas of the main ignition holes is ignited, the outer flames of the main ignition holes can ignite the mixed gas of the flame stabilizing holes, so that the outer flames of the flames in the main ignition holes and the outer flames of the flames in the flame stabilizing holes are mutually pulled, the phenomenon of flame separation can be effectively avoided, and the conditions of failure ignition, accidental flameout and the like are avoided.

Description

Inner ring fire cover and gas stove

Technical Field

The application relates to the technical field of cooking equipment, in particular to an inner ring fire cover and a gas stove.

Background

When the existing gas cooker is used, the problem of ignition failure exists, normal use of the cooker is affected, and the use experience of a user is poor.

One possible cause of misfire is the occurrence of a lifted flame phenomenon in the main ignition hole, which may cause flame extinction due to a high velocity of the air flow, resulting in misfire or accidental extinction.

Disclosure of utility model

The application aims to provide an inner ring fire cover and a gas stove, which are used for solving the technical problem that the gas stove in the prior art is easy to cause ignition failure or unexpected flameout due to flame separation.

The application provides an inner ring fire cover which is provided with a gas mixing chamber, a main ignition hole and a flame stabilizing hole;

the main ignition hole is arranged opposite to the ignition needle, and the flame stabilizing hole is arranged at intervals with the main ignition hole;

The gas outlet end of the main ignition hole and the gas outlet end of the flame stabilizing hole are both communicated with the circumferential side wall of the inner ring flame cover, and the gas inlet end of the main ignition hole and the gas inlet end of the flame stabilizing hole are both communicated with the gas mixing chamber of the inner ring flame cover.

In the above technical scheme, further, on the circumferential side wall of the inner ring fire cover, the minimum distance between the flame stabilizing hole and the main ignition hole is 0.5-2mm.

In any of the above technical solutions, further, an opening area of the flame stabilizing hole is smaller than an opening area of the main ignition hole.

In any of the above technical solutions, further, the number of flame stabilizing holes is plural, and plural flame stabilizing holes are disposed around the main ignition hole.

In any of the above technical solutions, further, a recess is provided on the outer peripheral sidewall of the inner ring fire cover;

the main ignition hole and the flame stabilizing hole are arranged in the concave part;

The concave part forms a shielding eave along the upper edge of the inner ring fire cover in the axial direction, and the shielding eave at least shields the main ignition hole.

In any of the above technical solutions, further, the main ignition holes include a first main ignition sub-hole and a second main ignition sub-hole;

The air inlet end of the first main ignition sub-hole and the air inlet end of the second main ignition sub-hole are communicated with the air mixing chamber;

The air outlet end of the first main ignition sub-hole is communicated with the air outlet end of the second main ignition sub-hole and is communicated with the concave part.

In any of the above technical solutions, further, the first main ignition sub-hole includes a first hole section and a second hole section that are sequentially communicated from the gas mixing chamber to the recess;

The first hole section extends along the axial direction of the inner ring fire cover, and the second hole section extends along the radial direction of the inner ring fire cover.

In any of the above technical solutions, further, the inner ring fire cover is provided with a fire transfer hole, and the fire transfer hole communicates the gas mixing chamber with the circumferential outer wall of the inner ring fire cover;

The middle part of at least one fire transfer hole is communicated with the concave part, and a notch is formed at the communicated part of the fire transfer hole and the concave part.

In any of the above technical solutions, further, the air outlet end of the main ignition hole is in a shape of a drop, rectangle or ellipse;

And/or the concave part is provided with a flow guiding surface which is arranged below the shielding eave at intervals along the axial direction of the inner ring fire cover in a facing way, and the flow guiding surface is inclined downwards from inside to outside along the radial direction of the inner ring fire cover.

The application also provides a gas stove, which comprises an ignition needle and the inner ring fire cover according to any technical scheme;

the ignition needle is arranged opposite to the main ignition hole of the inner ring fire cover.

Compared with the prior art, the application has the beneficial effects that:

the inner ring fire cover is provided with a main ignition hole and a flame stabilizing hole, wherein the main ignition hole is arranged opposite to an ignition needle, and the flame stabilizing hole is arranged at intervals from the main ignition hole; the air outlet end of the main ignition hole and the air outlet end of the flame stabilizing hole are both communicated with the circumferential side wall of the inner ring flame cover, and the air inlet end of the main ignition hole and the air inlet end of the flame stabilizing hole are both communicated with the air mixing chamber of the inner ring flame cover.

Compared with the technical scheme that ignition is realized by completely relying on a main ignition hole in the prior art, the flame stabilizing hole is additionally arranged on the circumferential side wall of the inner ring fire cover, the main ignition hole and the flame stabilizing hole can both supply mixed gas to the circumferential side wall of the inner ring fire cover, after the mixed gas of the main ignition hole is ignited, the outer flame can ignite the mixed gas of the flame stabilizing hole, so that the outer flame of the flame in the main ignition hole and the outer flame of the flame stabilizing hole are mutually pulled, the phenomenon of flame separation can be effectively avoided, further the conditions of failure ignition, accidental flameout and the like are avoided, and the gas stove can be smoothly ignited and continuously combusted.

The gas stove provided by the application comprises the inner ring fire cover, so that all beneficial effects of the inner ring fire cover can be realized.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first construction of an inner ring fire cover according to an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a second schematic view of an inner ring fire cover according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of FIG. 3 at section B-B;

fig. 5 is a cross-sectional view of fig. 3 at section C-C.

Reference numerals:

1-an inner ring fire cover; 10-a main ignition hole; 100-first main ignition split holes; 1000-a first bore section; 1001-a second bore section; 101-a second main ignition split; 11-flame stabilizing holes; 12-a gas mixing chamber; 13-a depression; 130-shielding eaves; 131-a flow guiding surface; 14-a fire hole; 15-opening.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.

In describing embodiments of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. refer to an azimuth or a positional relationship based on that shown in the drawings, or that the inventive product is conventionally put in place when used, merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "coupled" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

Example 1

Referring to fig. 1 to 5, an embodiment of the present application provides an inner ring fire cover 1 for a gas range.

The inner ring fire cover 1 provided in this embodiment is provided with a gas mixing chamber 12, a main ignition hole 10 and a flame stabilizing hole 11, wherein the gas mixing chamber 12 is usually arranged at the bottom of the inner ring fire cover 1, and fuel gas and air can be mixed in the gas mixing chamber 12 to obtain a mixed gas.

The main ignition hole 10 is provided to be opposite to the ignition needle so that the mixed gas supplied from the main ignition hole 10 can be ignited by the ignition needle, and the flame stabilizing hole 11 is provided at a distance from the main ignition hole 10, in other words, the flame stabilizing hole 11 is spaced apart from the main ignition hole 10.

The air outlet end of the main ignition hole 10 and the air outlet end of the flame stabilizing hole 11 are both communicated with the circumferential side wall of the inner ring flame cover 1, and the air inlet end of the main ignition hole 10 and the air inlet end of the flame stabilizing hole 11 are both communicated with the air mixing chamber 12 of the inner ring flame cover 1. So that one path of mixed gas can flow into the main ignition hole 10 through the air inlet end of the main ignition hole 10 and flow to the air outlet end of the main ignition hole 10 along the main ignition hole 10, so that the ignition needle can ignite at the air outlet end of the main ignition hole 10. The other path of mixed gas can flow into the flame stabilizing hole 11 through the air inlet end of the flame stabilizing hole 11 and flow to the air outlet end of the flame stabilizing hole 11 along the flame stabilizing hole 11, so that the flame at the air outlet end of the main ignition hole 10 is ignited at the air outlet end of the flame stabilizing hole 11, and then the flame outer flame at the main ignition hole 10 and the flame outer flame at the flame stabilizing hole 11 are mutually pulled to stabilize combustion, the flame separation phenomenon is avoided, and the conditions of ignition failure or accidental flameout and the like caused by the flame separation are further avoided.

Compared with the technical scheme that ignition is realized by completely relying on the main ignition hole 10 in the prior art, the inner ring flame cover 1 is additionally provided with the flame stabilizing holes 11 on the circumferential side wall of the inner ring flame cover 1, the main ignition hole 10 and the flame stabilizing holes 11 can supply mixed gas to the circumferential side wall of the inner ring flame cover 1, when the mixed gas supplied in the main ignition hole 10 is ignited, the outer flame can ignite the mixed gas supplied by the flame stabilizing holes 11, so that the outer flame of the flame in the main ignition hole 10 and the outer flame of the flame in the flame stabilizing holes 11 are mutually pulled, the occurrence of flame separation phenomenon can be effectively overcome, further, the conditions of failure ignition, accidental flameout and the like are ensured not to occur, and the gas stove can be smoothly ignited and continuously combusted.

In the alternative of this embodiment, as shown in fig. 2, the minimum distance H between the flame stabilizing holes 11 and the main ignition holes 10 on the circumferential side wall of the inner ring flame cover 1 is 0.5 to 2mm, that is, the minimum distance H between the edge of the flame stabilizing holes 11 on the circumferential side wall of the inner ring flame cover 1 and the edge of the main ignition holes 10 on the circumferential side wall of the inner ring flame cover 1 is 0.5 to 2mm, for example, 0.5mm, 1mm, 1.5mm or 2mm.

Thus, by configuring the minimum distance H between the flame stabilizing hole 11 and the main ignition hole 10 to be not less than 0.5mm, the distance between the flame outer flame in the flame stabilizing hole 11 and the flame outer flame in the main ignition hole 10 is large enough to enable the two to establish a mutual pulling relationship; in addition, by configuring the minimum distance H between the flame stabilizing hole 11 and the main ignition hole 10 to be not more than 2mm, the distance between the flame outer flame in the flame stabilizing hole 11 and the flame outer flame of the main ignition hole 10 is not excessively large, and the two can establish a relationship of being pulled each other.

In the alternative of this embodiment, the opening area of the flame stabilizing hole 11 is smaller than the opening area of the main ignition hole 10, that is, the opening area of the main ignition hole 10 is larger than the opening area of the flame stabilizing hole 11, so that the supply amount of the mixed gas at the gas outlet end of the main ignition hole 10 is sufficient to be ignited with high efficiency.

In the alternative of this embodiment, the number of the flame stabilizing holes 11 is plural, and the plurality of flame stabilizing holes 11 are disposed around the main ignition hole 10, so that the plurality of flame stabilizing holes 11 cooperate to stabilize the flame of the main ignition hole 10, thereby realizing multi-directional flame stabilization of the main ignition hole 10. The number of flame stabilizing holes 11 is, for example, two, three or more. Each flame stabilizing hole 11 may be provided on either side of the main ignition hole 10 in the circumferential direction of the inner ring flame cover 1, or may be provided above or below the main ignition hole 10.

In the alternative of this embodiment, the number of the flame stabilizing holes 11 is two, and the two flame stabilizing holes 11 are respectively disposed on two sides of the main ignition hole 10 along the circumferential direction of the inner ring fire cover 1, that is, one side of the main ignition hole 10 in the circumferential direction of the inner ring fire cover 1 is provided with one flame stabilizing hole 11, and the other side of the main ignition hole 10 in the circumferential direction of the inner ring fire cover 1 is provided with the flame stabilizing hole 11, so that the structure can be simplified on the basis of reliable flame stabilization.

In the alternative of this embodiment, the two flame stabilizing holes 11 are symmetrically arranged about the main ignition hole 10, so that the optimizing effect distribution of the flame from the two sides of the main ignition hole 10 is more uniform, and the flame stabilizing effect is improved.

In an alternative of this embodiment, the air outlet end of the main ignition hole 10 is in a shape of a droplet, a rectangle or an ellipse, as shown in fig. 2, the main ignition hole 10 is in an inverted shape, and it is understood that the main ignition hole 10 may also be in an upright shape of a droplet, the water droplet has one symmetry axis, and when the main ignition hole 10 is in an ellipse, the two symmetry axes are provided.

Therefore, the gas outlet end of the main ignition hole 10 cannot be configured into a shape with the number of symmetry axes of a circle or a square being larger than two, so that the shape of the gas outlet end of the main ignition hole 10 can ensure that local flame is smaller, and the condition that the overall flame is too large to cause the excessive lifted flame is avoided, thereby playing a role in stabilizing the flame.

In the alternative scheme of the embodiment, the peripheral side wall of the inner ring fire cover 1 is provided with a concave part 13; the main ignition hole 10 and the flame stabilizing hole 11 are both disposed in the recess 13.

The recess 13 forms a shielding eave 130 along an upper edge of the inner ring fire cover 1 in an axial direction, and the shielding eave 130 shields at least the main ignition hole 10, specifically, the shielding eave 130 shields the main ignition hole 10 and the flame stabilizing hole 11.

Thereby the soup that the pan overflowed flows down along the shielding eaves of the concave part 13, can avoid the soup to flow into the concave part 13, avoid the soup to pollute and even block the main ignition hole 10 and the flame stabilizing hole 11 in the concave part 13, ensure that the accident that the gas circuit is not smooth or the flame is separated due to the blockage of the main ignition hole 10 or the flame stabilizing hole 11, and further ensure that the failure of ignition or the unexpected flameout can not occur.

In this embodiment, the main ignition hole 10 includes a first main ignition sub-hole 100 and a second main ignition sub-hole 101, the air inlet end of the first main ignition sub-hole 100 and the air inlet end of the second main ignition sub-hole 101 are both communicated with the air mixing chamber 12, and the air outlet end of the first main ignition sub-hole 100 and the air outlet end of the second main ignition sub-hole 101 are both communicated with the recess 13.

In this technical solution, the gas outlet end of the first main ignition sub-hole 100 and the gas outlet end of the second main ignition sub-hole 101 form the gas outlet end of the main ignition hole 10 at the through position in the recess 13, so that the mixed gas in the gas mixing chamber 12 can supply gas to the gas outlet end of the main ignition hole 10 together through the first main ignition sub-hole 100 and the second main ignition sub-hole 101.

Two-channel air supply to the air outlet end of the main ignition hole 10 is realized through the first main ignition sub-hole 100 and the second main ignition sub-hole 101, the area of the air outlet end of the main ignition hole 10 is increased, the length of a single channel is shortened, the along-path loss of mixed gas is reduced, and the air supply capacity to the air outlet end of the main ignition hole 10 is improved.

Optionally, the air inlet end of the first main ignition sub-hole 100 and the air inlet end of the second main ignition sub-hole 101 are communicated with each other and are communicated with the air mixing chamber 12, so that the area of the air inlet end of the main ignition hole 10 is increased, the resistance of the mixed gas flowing from the air inlet end to the air outlet end of the main ignition hole 10 is reduced, and the air supply capacity of the air outlet end of the main ignition hole 10 is improved.

In an alternative of this embodiment, the first main ignition sub-hole 100 includes a first hole section 1000 and a second hole section 1001 that are sequentially communicated from the gas mixing chamber 12 to the recess 13. Specifically, the air inlet end of the first hole section 1000 communicates with the air mixing chamber 12, the air outlet end of the first hole section 1000 and the air inlet end of the second hole section 1001 cross and communicate with the recess 13, so that in the first main ignition sub-hole 100, the mixed gas flows to the air outlet end of the main ignition hole 10 sequentially through the first hole section 1000 and the second hole section 1001.

The first hole section 1000 extends along the axial direction of the inner ring fire cover 1, the second hole section 1001 extends along the radial direction of the inner ring fire cover 1, and the first hole section 1000 and the second hole section 1001 are configured in the extending directions, so that the first hole section 1000 and the second hole section 1001 are easy to machine and form, and the forming difficulty of the first main ignition sub-hole 100 is simplified.

Further, the second main ignition sub-hole 101 may be configured as a straight hole communicating the air inlet end of the first hole section 1000 and the air outlet end of the second hole section 1001, so that the molding difficulty of the second main ignition sub-hole 101 may be simplified, the spatial distribution of the first main ignition sub-hole 100 and the second main ignition sub-hole 101 may be optimized, and the space utilization ratio between the air mixing chamber 12 and the recess 13 may be improved.

In the alternative scheme of this embodiment, the inner ring fire cover 1 is provided with the fire transfer hole 14, the air inlet end of fire transfer hole 14 communicates the gas mixing chamber 12, the quantity of fire transfer hole 14 is a plurality of, specifically, the quantity of fire transfer hole 14 is a plurality of, a plurality of fire transfer holes 14 are arranged along the circumference of inner ring fire cover 1, thereby after the mixed gas of the end of giving vent to anger of main ignition hole 10 is lighted, the flame of main ignition hole 10 ignites the mixed gas in the fire transfer hole 14, make the flame spread the circumference outer wall of inner ring fire cover 1 along the circumference of inner ring fire cover 1, and then make inner ring fire cover 1 outwards encircle fire cover transmission with the flame, realize the burning heating function of gas-cooker.

In order to realize that the flame of the main ignition hole 10 ignites the mixed gas in the fire transfer holes 14, the middle part of at least one fire transfer hole 14 penetrates through the concave part 13, and a gap 15 is formed at the penetration part of the fire transfer holes 14 and the concave part 13, so that part of the mixed gas in the fire transfer holes 14 is exposed in the concave part 13 through the gap 15, the flame of the main ignition hole 10 and the flame of the flame stabilizing hole 11 can ignite the mixed gas at the gap 15, so that the mixed gas in the fire transfer holes 14 where the gap 15 is positioned is ignited, and then the mixed gas in all the fire transfer holes 14 is ignited, and flame transfer after ignition is realized rapidly.

In the alternative of this embodiment, the flame stabilizing hole 11 is located between the main ignition hole 10 and the flame transfer hole 14 in the circumferential direction of the inner ring flame cover 1, that is, in the circumferential direction of the inner ring flame cover 1, the flame stabilizing hole 11 is closer to the main ignition hole 10 than the flame transfer hole 14, thereby ensuring successful flame stabilization before flame transfer.

In the alternative of this embodiment, in the use state of the inner ring fire cover 1, the opening 15 is higher than the main ignition hole 10 in the axial direction of the inner ring fire cover 1, and since the flame in the main ignition hole 10 burns upward, the opening 15 is configured to be higher than the main ignition hole 10, so that it can be ensured that the combustion range of the flame in the main ignition hole 10 can cover the mixed gas at the opening 15 and ignite it.

Further, the notch 15 is higher than the flame stabilizing hole 11 along the axial direction of the inner ring flame cover 1, so that the combustion range of the flame in the flame stabilizing hole 11 can cover the mixed gas at the notch 15 and ignite the mixed gas.

In an alternative of this embodiment, the recess 13 has a diversion surface 131 disposed below the shielding eave 130 in a facing manner along the axial direction of the inner ring fire cover 1, and the diversion surface 131 is inclined downward from inside to outside along the radial direction of the inner ring fire cover 1. In other words, as shown in fig. 3 to 5, the recess 13 has a shielding eave 130 and a guide surface 131, the guide surface 131 is disposed below the shielding eave 130 at intervals, the guide surface 131 is disposed opposite to the shielding eave 130, and the guide surface 131 is inclined from inside to outside as viewed in the radial direction of the inner ring fire cover 1.

Therefore, when the soup flowing down along the shielding eave 130 accidentally falls into the concave part 13, the soup falls onto the guide surface 131 and flows downwards from inside to outside along the guide surface 131 under the guide action of the guide surface 131 and the action of gravity, so that the soup is prevented from being accumulated in the concave part 13, and further the soup accidentally falling into the concave part 13 is prevented from polluting and even blocking the main ignition hole 10 and the flame stabilizing hole 11.

Example two

The second embodiment provides a gas stove, the second embodiment includes the inner ring fire cover in the first embodiment, the technical features of the inner ring fire cover disclosed in the first embodiment are also applicable to the first embodiment, and the technical features of the inner ring fire cover disclosed in the first embodiment are not repeated.

As shown in fig. 1 to 5, the gas stove provided in this embodiment includes an ignition needle and an inner ring fire cover 1, and further, the ignition needle is disposed opposite to a main ignition hole 10 of the inner ring fire cover 1, so that the ignition needle can ignite a mixed gas at an air outlet end of the main ignition hole 10, thereby realizing an ignition function of the gas stove.

The gas stove in this embodiment has the advantages of the inner ring fire cover in the first embodiment, and the advantages of the inner ring fire cover disclosed in the first embodiment are not repeated here.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, any of the claimed embodiments can be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Claims

1. An inner ring fire cover is characterized in that the inner ring fire cover is provided with a gas mixing chamber, a main ignition hole and a flame stabilizing hole;

2. The inner ring fire cover according to claim 1, wherein the minimum distance between the flame stabilizing holes and the main ignition holes on the circumferential side wall of the inner ring fire cover is 0.5-2mm.

3. The inner ring fire cover of claim 1 wherein the flame stabilizing holes have an opening area smaller than an opening area of the main ignition holes.

4. The inner ring fire cover of claim 1 wherein the number of flame stabilizing holes is a plurality, a plurality of the flame stabilizing holes being disposed around the main ignition hole.

5. The inner ring fire cover according to claim 1, wherein a recess is provided in an outer peripheral side wall of the inner ring fire cover;

6. The inner ring fire cover of claim 5 wherein the main firing apertures include a first main firing sub-aperture and a second main firing sub-aperture;

7. The inner annular fire cover of claim 6 wherein the first primary ignition subchamber comprises a first orifice section and a second orifice section in sequential communication from the plenum chamber to the recess;

8. The inner ring fire cover according to claim 5, wherein the inner ring fire cover is provided with a fire transfer hole which communicates the gas mixing chamber with the circumferential outer wall of the inner ring fire cover;

9. The inner ring fire cover according to claim 5, wherein the air outlet end of the main ignition hole is in the shape of a drop, rectangle or oval;

10. A gas range comprising an ignition needle and the inner ring fire cover of any one of claims 1 to 9;