CN217978795U - Fire lid, combustor and gas-cooker - Google Patents

Abstract

The utility model belongs to the technical field of electrical apparatus, concretely relates to fire lid, combustor and gas-cooker aims at solving the insufficient phenomenon of burning in inner ring fire hole to at least a certain extent to improve the combustion efficiency of gas-cooker. The fire cover comprises an annular body, an inner ring fire hole is formed in the inner ring wall of the body, and a plurality of air supply grooves are formed in the inner ring wall at intervals. The arrangement of the air supply groove enables the air quantity in the area of the inner ring fire hole to be sufficient, and the inner ring fire hole can stably burn, so that the phenomenon of insufficient burning of the inner ring fire hole can be improved, the generation of flue gas CO is reduced, and the burning efficiency of the gas stove is improved.

Description

Fire lid, combustor and gas-cooker

Technical Field

The application belongs to the technical field of electrical appliances, and particularly relates to a fire cover, a burner and a gas stove.

Background

The gas-cooker mainly is used for cooking, and the fire lid of gas-cooker is provided with inner ring fire hole and outer loop fire hole usually, and the inner ring fire hole sets up the inboard in outer loop fire hole, and the regional air quantity in inner ring fire hole is less than the regional air quantity in outer loop fire hole, and the supplementary volume of the air in inner ring fire hole is not enough, and the influence leads to the burning in inner ring fire hole not enough, influences the combustion efficiency of gas-cooker.

Disclosure of Invention

In order to solve the technical problem, the application provides a fire lid, combustor and gas-cooker, aims at solving the insufficient phenomenon of burning in inner ring fire hole to a certain extent at least to improve the combustion efficiency of gas-cooker.

The technical scheme of the application is as follows:

firstly, this application provides a fire lid, its special character lies in, fire lid is including being annular body, the inner ring wall of body is provided with interior ring fire hole, the interval is provided with a plurality ofly and is used for replenishing the tonifying qi recess of the air capacity of the regional department of inner ring fire hole on the inner ring wall.

The utility model provides a fire lid, because this fire lid is including being annular body, the inner ring wall of body is provided with inner ring fire hole, the interval is provided with a plurality of tonifying qi recesses on the inner ring wall, the regional space in inner ring fire hole place can be enlarged in the setting of tonifying qi recess, with the air memory space in the region in inner ring fire hole place is improved, so that the air quantity of inner ring fire hole department is sufficient, make inner ring fire hole department stable combustion, thereby can improve the insufficient phenomenon of burning in inner ring fire hole, reduce the production of flue gas, improve the combustion efficiency of gas-cooker.

In some embodiments, the inner annular wall of the body comprises a first inner wall and a second inner wall, the inner side edge from the first inner wall to the top surface of the body is obliquely and downwardly extended towards the inside of the body, and the second inner wall is connected to the bottom of the first inner wall and is obliquely and downwardly extended towards the inside of the body;

the inner ring fire hole is formed in the first inner wall, and the air supply groove is formed in the joint of the first inner wall and the second inner wall.

In some embodiments, the inner ring fire holes are provided with a plurality of groups, the inner ring fire holes are arranged at intervals, and more than one air supply groove is arranged between the adjacent inner ring fire holes to balance the air supply amount at the inner ring fire holes.

In some embodiments, the fire lid further comprises:

the body is arranged on the supporting piece, and the body is connected with the supporting piece to form a mixed air cavity.

In some embodiments, the support comprises:

the supporting plate is arranged below the body;

the first ring body is arranged on the supporting plate, and the inner ring wall of the body is supported by the first ring body;

the second ring body is arranged on the supporting plate, the second ring body is arranged on the outer side of the first ring body at intervals, and the outer ring wall of the body is supported by the second ring body.

In some embodiments, the support plate is provided with more than one air inlet, the air inlet is arranged between the first ring body and the second ring body, and the air inlet can supplement gas mixed with air to the gas mixing cavity so as to further improve the combustion effect of the combustor.

In some embodiments, the fire cover further comprises a plurality of air homogenizing members, the air homogenizing members are arranged in the air mixing cavity, the air homogenizing members are provided with a plurality of air homogenizing holes, the air homogenizing members and the air inlets are correspondingly arranged, the air homogenizing members are arranged above the corresponding air inlets, and air can be supplemented into the air mixing cavity more uniformly through uniform transition of the air homogenizing holes.

In some embodiments, the gas distributing member includes a gas distributing disc and two connecting plates, the gas distributing disc is disposed above the corresponding gas inlet, the plurality of gas distributing holes are opened on the gas distributing disc, and two sides of the gas distributing disc are connected with the first ring body and the second ring body through the two connecting plates.

In some embodiments, the body is made of stainless steel, and the wall thickness of the body is 0.8-1.2 mm, so that the production cost can be reduced compared with a copper body.

In some embodiments, the outer ring fire hole and the inner ring fire hole on the body are circular holes, the fire outlet of the outer ring fire hole faces the outside of the body, and the fire outlet of the inner ring fire hole faces the inside of the body.

In some embodiments, the inner ring fire holes are provided in four groups, each group of the inner ring fire holes comprises 3 to 9 inner ring fire holes, and the diameter of each inner ring fire hole is 1.2 to 1.5mm;

two rows of outer ring fire holes are arranged on the outer ring wall of the body, and the aperture of each outer ring fire hole is 1.4-1.6 mm;

the volume of the gas mixing cavity of the fire cover is 1.6x10 ⁵ +/-5％mm ³ 。

Secondly, this application still provides a combustor, the combustor includes above-mentioned fire lid.

The combustor with the fire cover has the advantages that the air supply grooves are formed in the inner ring wall of the fire cover, the space of the area where the inner ring fire hole is located can be enlarged due to the arrangement of the air supply grooves, the air storage amount of the area where the inner ring fire hole is located is increased, the air amount of the inner ring fire hole is sufficient, the inner ring fire hole is enabled to stably combust, the phenomenon that the inner ring fire hole is insufficiently combusted can be improved, smoke is reduced, and the combustion efficiency of a gas stove is improved.

Finally, the application also provides a gas stove which comprises the burner.

The gas stove with the burner has the advantages that the gas supplementing groove is formed in the inner ring wall of the fire cover of the burner, the space of the area where the inner ring fire hole is located can be enlarged due to the gas supplementing groove, the air storage amount of the area where the inner ring fire hole is located is increased, the air amount of the inner ring fire hole is sufficient, the inner ring fire hole is enabled to stably burn, the phenomenon that the inner ring fire hole is not sufficiently burnt can be improved, smoke is reduced, and the burning efficiency of the gas stove is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

In the drawings:

FIG. 1 is a schematic structural diagram of a fire cover according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

fig. 4 is a schematic cross-sectional view of fig. 1.

Reference numerals:

the gas-filled cylinder comprises a body-100, an inner annular wall-110, an inner annular fire hole-111, a gas-supplementing groove-112, a first inner wall-113, a second inner wall-114, a third inner wall-115, an outer annular wall-120, a first outer wall-121, a second outer wall-122, a third outer wall-123 and an outer annular fire hole-124;

a support part-200, a support plate-210, a first ring body-220, a second ring body-230, a third ring body-240, a vent hole-250, a connecting arm-260, an air inlet-270 and an air inlet sleeve 280;

300 parts of air homogenizing pieces, 310 parts of air homogenizing holes, 320 parts of air homogenizing discs and 330 parts of connecting plates.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

the embodiment of the application provides a fire lid, combustor and gas-cooker, aims at solving the insufficient phenomenon of burning in inner ring fire hole to a certain extent at least to improve the combustion efficiency of gas-cooker

The burner cap provided by the embodiment of the application can be applied to the burner in the embodiment of the application, and the burner in the embodiment of the application can be applied to the gas stove in the embodiment of the application. Alternatively, the burner according to the embodiment of the present application may include the fire cover according to the embodiment of the present application, and the gas range according to the embodiment of the present application may include the burner according to the embodiment of the present application.

Fig. 1 is a schematic structural view of a fire cover according to an embodiment of the present invention, fig. 2 is an exploded view of fig. 1, and fig. 3 is a cross-sectional view of fig. 1. Referring to fig. 1 to 3, the fire cover of the embodiment of the present application includes a body 100, the body 100 is ring-shaped, an inner ring wall 110 of the body 100 is provided with an inner ring fire hole 111, and a plurality of air supply grooves 112 for supplying air in the area of the inner ring fire hole 111 are spaced on the inner ring wall 110.

The fire cover provided by the embodiment of the application, because this fire cover is including being annular body 100, the inner ring wall 110 of body 100 is provided with inner ring fire hole 111, the interval is provided with a plurality of tonifying qi recesses 112 that are used for replenishing the air quantity of inner ring fire hole 111 region department on the inner ring wall 110, the regional space in inner ring fire hole 111 department can be enlarged in the setting of tonifying qi recess 112, with the air storage volume of the regional in inner ring fire hole 111 department of improvement, so that the air quantity of inner ring fire hole 111 department is sufficient, make inner ring fire hole 111 department stably burn, thereby can improve the insufficient phenomenon of burning of inner ring fire hole 111, reduce the production of flue gas, improve the combustion efficiency of gas-cooker.

With reference to fig. 1 to 3, the top surface of the body 100 of the embodiment of the present application may be a horizontal surface, and the inner circumferential wall 110 includes a first inner wall 113 and a second inner wall 114, the inner side edge from the first inner wall 113 to the top surface of the body 100 is inclined and downwardly extended toward the inside of the body 100, and the second inner wall 114 is connected to the bottom of the first inner wall 113 and is inclined and downwardly extended toward the inside of the body 100. The first inner wall 113 and the second inner wall 114 of the embodiment of the application can be sequentially formed on the inner side of the body 100, the inner ring fire hole 111 is formed on the first inner wall 113, the air supply groove 112 can be formed at the joint of the first inner wall 113 and the second inner wall 114, namely, the top of the air supply groove 112 is formed on the first inner wall 113, and the bottom of the air supply groove 112 is formed on the second inner wall 114.

The air supply groove 112 of the embodiment of the present application is a recess extending toward the bottom of the body 100, and the projection of the air supply groove on the horizontal plane may be approximately square, and the volume of the air supply groove is approximately 1.2mm ³ The thickness is about 4-6mm, and of course, the size parameters of the gas-supply groove 112 can be adjusted adaptively according to the size of the body 100, and the embodiment of the present application is not limited herein.

With reference to fig. 1 to 3, the inner ring fire holes 111 of the embodiment of the present application are provided with a plurality of groups, the inner ring fire holes 111 of the plurality of groups are arranged at intervals, and more than one air supply groove 112 is arranged between adjacent inner ring fire holes 111 to balance the air supply amount at the inner ring fire holes 111.

Specifically, in the embodiment of the present application, four groups of inner ring fire holes 111 are arranged at intervals around the central axis of the body 100, and one air supply groove 112 is arranged between two adjacent groups of inner ring fire holes 111, so that air can be uniformly supplied to two air supply grooves 112 adjacent to the air supply groove 112 through the air supply groove 112, thereby improving the combustion efficiency of the gas stove. Of course, in other embodiments, the inner ring fire holes 111 may also be provided with other numbers of components, for example, two groups, three groups, etc., and two or more numbers of the gas supply grooves 112 may be provided between two adjacent groups of the inner ring fire holes 111, which is not limited herein in this embodiment of the application.

In the embodiment of the present application, the inner ring fire holes 111 are drilled along the top surface perpendicular to the first inner wall 113 by a drill, and the inner ring fire holes 111 have an inclination angle of 20 to 80 °, and preferably, the inclination angle of the inner ring fire holes 111 is 30 °.

In the embodiment of the application, each group of inner ring fire holes 111 comprises 3-8 inner ring fire holes 111,3-8 inner ring fire holes 111 which can be arranged in two rows, each inner ring fire hole 111 can be circular, the aperture of each inner ring fire hole 111 can be 1.2-1.5 mm, and the fire outlet end of each inner ring fire hole 111 can face the inside of the body 100. The inner ring fire holes 111 having a circular shape may increase a contact point of the inner ring flame generated at the inner ring fire holes 111 with the cooking appliance, and may further improve heating efficiency of the cooking appliance.

With reference to fig. 1-3, the inner annular wall 110 of the fire lid of the embodiment of the present application further includes a third inner wall 115, and the third inner wall 115 may be integrally connected to the bottom of the second inner wall 114 and extend vertically downward.

Referring to fig. 1 to 3, the outer ring wall 120 of the fire cover according to the embodiment of the present invention includes a first outer wall 121, a second outer wall 122 and a third outer wall 123, the first outer wall 121 extends obliquely downward from the outer edge of the top surface of the body 100 to the outside of the body 100, the second outer wall 122 is connected to the bottom of the first inner wall 113 and extends obliquely downward to the outside of the body 100, and the third outer wall 123 is connected to the bottom of the second outer wall 122 and extends vertically downward. The first outer wall 121, the second outer wall 122 and the third outer wall 123 of the embodiment of the application may be integrally formed on the outer side of the body 100 in sequence, and the first inner wall 113 is provided with an outer ring fire hole 124.

The outer ring fire holes 124 of this application implementation can be provided with two rows, and the quantity of the outer ring fire holes 124 of two rows can equal, can be totally 180, and the play fire end of every outer ring fire hole 124 can be towards the outside of body 100, and, every outer ring fire hole 124 all can be circular, and the aperture of every outer ring fire hole 124 all can be 1.4 ~ 1.6mm. The outer ring fire holes 124 having a circular shape may increase a contact point of the outer ring flame generated at the outer ring fire holes 124 with the cooking appliance, which may further improve heating efficiency of the cooking appliance.

In the present embodiment, the outer ring fire holes 124 are also drilled by a drill along the top surface perpendicular to the outer wall, and the outer ring fire holes 124 have an inclination angle of 20 to 60 °, and preferably, the outer ring fire holes 111 have an inclination angle of 30 °.

In the embodiment of the present application, since the fire outlet end of the inner ring fire hole 111 faces the outside of the body 100, the fire outlet end of the outer ring fire hole 124 can face the outside of the body 100, and the inner ring fire hole 111 and the outer ring fire hole 124 are both provided with two rows, when in actual use, four annular flames can be formed, so as to heat the cooking utensil more uniformly.

Referring to fig. 1 to 3, the fire lid of the embodiment of the present application further includes a support member 200, the body 100 of the fire lid is disposed on the support member 200, and the body 100 and the support member 200 are connected to form a gas mixing chamber.

Fig. 4 is a schematic cross-sectional view of fig. 1, and referring to fig. 1 to 4, a support member 200 according to an embodiment of the present invention includes a support plate 210, a first ring 220 and a second ring 230, the support plate 210 is disposed below the body 100 and can be placed on a cooking bench, the first ring 220 and the second ring 230 are both disposed on the support plate 210, the inner annular wall 110 of the body 100 is supported by the first ring 220, the second ring 230 is disposed at an interval outside the first ring 220, the outer annular wall 120 of the body 100 is supported by the second ring 230, and the body 100, the first ring 220, the second ring 230 and the support plate 210 form an air mixing chamber.

Specifically, in the embodiment of the present application, the inner annular wall 110 (the third inner wall 115) of the body 100 may be riveted to the inner side of the first ring 220 by an interference fit, the outer annular wall 120 (the third outer wall 123) of the body 100 may be riveted to the outer side of the second ring 230 by an interference fit,

further, with reference to fig. 1 to 3, in the embodiment of the present application, a vent hole 250 is disposed in the middle of the supporting plate 210, a third ring body 240 is disposed in the vent hole 250, the third ring body 240, the first ring body 220 and the second ring body 230 can be coaxially disposed, the outer peripheral surface of the third ring body 240 and the outer peripheral surface of the first ring body 220 can be connected by a plurality of connecting arms 260, and the plurality of connecting arms 260 can be disposed at intervals around the central axis of the third ring body 240 to achieve connection between the third ring body 240 and the first ring body 220.

Air can enter the inner ring of the body 100 of the fire cover through the gap between the middle portion of the third ring body 240, the third ring body 240 and the first ring body 220 to supplement the air for the combustion of the inner ring fire holes 111.

With reference to fig. 1 to 4, the support plate 210 of the embodiment of the present application may be provided with more than one air inlet 270, the air inlet 270 is disposed between the first ring body 220 and the second ring body 230, the air inlet 270 may supplement the gas mixture chamber with gas mixed with air, and the gas is output and combusted through the outer ring fire holes 124 and the inner ring fire holes 111.

Further, referring to fig. 3 and fig. 4, in the embodiment of the present application, an air inlet sleeve 280 may be disposed in the air inlet 270, and the air inlet sleeve 280 is configured to be connected to a burner of a burner.

With reference to fig. 1-4, the fire lid of the embodiment of the present application further includes more than one air uniforming member 300, the air uniforming member 300 is disposed in the air mixing chamber, the air uniforming member 300 is provided with a plurality of air uniforming holes 310, and the area of the air uniforming holes 310 is about 100mm ² The gas homogenizing piece 300 is correspondingly arranged above the corresponding gas inlet 270 on the basis of the gas homogenizing piece 300 and the gas inlet 270, on one hand, the gas homogenizing piece 300 can block and reduce the speed of entering the gas mixing cavity through the gas inlet 270, and on the other hand, air can be supplemented into the gas mixing cavity more uniformly through uniform transition of the gas homogenizing holes 310 and distributed to the inner ring fire holes or the outer ring fire holes for combustion.

With reference to fig. 2, the gas uniforming member 300 according to the embodiment of the present invention includes a gas uniforming disc 320 and two connecting plates 330, the gas uniforming disc 320 is disposed above the corresponding gas inlet 270, the plurality of gas uniforming holes 310 are opened on the gas uniforming disc 320, and two sides of the gas uniforming disc 320 are connected to the first ring 220 and the second ring 230 through the two connecting plates 330, so as to fix the gas uniforming member 300 in the gas mixing cavity.

Specifically, each component constituting the gas uniformizing element 300 according to the embodiment of the present application is preferably integrally formed, only one gas inlet 270 is provided on the support plate 210, the gas inlet 270 on the support plate 210 is connected to the burner of the burner, and accordingly, one gas uniformizing element 300 is provided, and the gas mixed with air discharged from the burner of the burner is introduced into the gas mixing chamber through the gas inlet 270 on the support plate 210, and is uniformly transited through the gas uniformizing element 300 in the gas mixing chamber and then redistributed to the outer ring fire holes 124 and the inner ring fire holes 111 of the fire cover for combustion.

In other embodiments, a plurality of air inlets 270 may be provided on the support plate 210, the plurality of air inlets 270 may be connected to the burner of the burner through a distribution cavity, and the air-mixed gas discharged from the burner of the burner may be introduced into the gas mixing cavity through the distribution cavity and simultaneously enter the air inlets 270 on the support plate 210, and then redistributed to the outer ring fire holes 124 and the inner ring fire holes 111 of the fire cover for combustion, so as to further improve the balance of gas introduction.

In the prior art, the body 100 of the fire cover is formed by forging copper metal, and then the fire hole is formed by drilling, so that the processing cost of the body 100 of the fire cover is high.

Based on this, the material of the body 100 is selected as stainless steel in the embodiment of the present application, which not only can reduce the production cost, but also can form the fire hole more easily compared with the copper body 100.

Further, the wall thickness of the body 100 of the embodiment of the present application may be a thin wall, and the specific size may be 0.8 to 1.2mm, and the volume of the air mixing chamber of the fire lid may be 1.6x10 ⁵ +/-5％mm ³ Under the condition of matching with the arrangement of the outer ring fire holes 124 and the inner ring fire holes 111, the full supplement of gas and air can be ensured, so that the combustion efficiency with high energy efficiency is realized; in addition, the flow velocity of the gas can be ensured not to be too high, so that the combustion is more sufficient, and the combustion tempering phenomenon is avoided; in addition, through the arrangement of the gas homogenizing piece 300, when the mixed gas is uniformly dispersed in the cavity, the flow rate of the gas and the gas quantity required by combustion can be ensured to be kept at oneTherefore, the gas stove ensures that when the gas stove burns or closes the gas, the gas cannot explode due to the fact that the gas is remained in the cavity.

The burner with the fire cover and the gas stove comprising the burner can ensure that the air quantity at the 111 position of the inner ring fire hole is sufficient, so that the 111 position of the inner ring fire hole can be stably combusted, the phenomenon of insufficient combustion of the inner ring fire hole 111 can be improved, the generation of flue gas CO is reduced, in addition, the combustion tempering phenomenon and the explosion phenomenon can be avoided, the combustion efficiency of the gas stove is improved, and the gas stove has good practical value.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

In the description of the present application, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (12)

1. The fire cover is characterized by comprising an annular body, wherein an inner annular fire hole is formed in the inner annular wall of the body, and a plurality of air supply grooves are formed in the inner annular wall at intervals;

the inner annular wall of the body comprises a first inner wall and a second inner wall, the inner side edge from the first inner wall to the top surface of the body extends obliquely and downwards towards the inside of the body, and the second inner wall is connected to the bottom of the first inner wall and extends obliquely and downwards towards the inside of the body;

the inner ring fire hole is formed in the first inner wall, and the air supply groove is formed in the joint of the first inner wall and the second inner wall.

2. The fire cover of claim 1, wherein the inner ring fire holes are provided with a plurality of groups, the inner ring fire holes are arranged at intervals, and more than one air supply groove is arranged between the adjacent inner ring fire holes.

3. The fire lid of any one of claims 1-2, further comprising:

the body is arranged on the supporting piece, and the body is connected with the supporting piece to form a mixed air cavity.

4. The fire cover of claim 3, wherein the support comprises:

the supporting plate is arranged below the body;

the first ring body is arranged on the supporting plate, and the inner ring wall of the body is supported by the first ring body;

the second ring body is arranged on the supporting plate, the second ring body is arranged on the outer side of the first ring body at intervals, and the outer ring wall of the body is supported by the second ring body.

5. The fire cover of claim 4, wherein the support plate is provided with one or more air inlets disposed between the first ring body and the second ring body.

6. The fire cover according to claim 5, further comprising at least one air homogenizing member disposed in the air mixing chamber, wherein the air homogenizing member is provided with a plurality of air homogenizing holes, the air homogenizing member is disposed corresponding to the air inlet, and the air homogenizing member is disposed above the corresponding air inlet.

7. The fire cover according to claim 6, wherein the gas distributing member comprises a gas distributing plate and two connecting plates, the gas distributing plate is arranged above the corresponding gas inlet, a plurality of gas distributing holes are formed in the gas distributing plate, and two sides of the gas distributing plate are connected with the first ring body and the second ring body through the two connecting plates.

8. The fire cover according to any one of claims 1-2 and 4-7, wherein the body is made of stainless steel, and the wall thickness of the body is 0.8-1.2 mm.

9. The fire cover according to claim 8, wherein the outer ring fire holes and the inner ring fire holes are circular holes, the fire outlet direction of the outer ring fire holes faces the outside of the body, and the fire outlet direction of the inner ring fire holes faces the inside of the body.

10. The fire cover according to claim 9, wherein the inner fire holes are provided in four groups, each group of the inner fire holes comprises 3 to 9 inner fire holes, and the diameter of each inner fire hole is 1.2 to 1.5mm;

two rows of outer ring fire holes are arranged on the outer ring wall of the body, and the aperture of each outer ring fire hole is 1.4-1.6 mm;

the volume of the gas mixing cavity of the fire cover is 1.6x10 ⁵ +/-5％mm ³ 。

11. A burner comprising a fire cover according to any one of claims 1 to 10.

12. A gas burner characterized in that it comprises a burner according to claim 11.

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