CN112728542B

CN112728542B - Fire lid, combustor and gas-cooker

Info

Publication number: CN112728542B
Application number: CN202110077925.6A
Authority: CN
Inventors: 潘福敏; 朱运波; 李忠华; 陆祖安
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2022-05-31
Anticipated expiration: 2041-01-20
Also published as: CN112728542A

Abstract

The invention discloses a fire cover, a burner and a gas stove, relating to the technical field of burners, wherein the fire cover comprises: a plurality of sub fire covers; and a plurality of connecting spokes are connected between any two adjacent sub fire covers or between part of two adjacent sub fire covers through a plurality of connecting spokes arranged at intervals along the circumferential direction. The sub-fire cover and the connecting spokes are provided with a plurality of fire holes. The plurality of sub-fire covers are two and include outer fire cover and suit in the interior fire cover of outer fire cover, and a plurality of web spokes are along circumference interval arrangement and connect outer fire cover and interior fire cover respectively. The top of interior fire lid is along the height and is less than or equal to outer fire lid internal perisporium's end along the height, and outer fire lid, web spoke and interior fire cover are covered the setting height of fire hole and are decreased progressively in proper order. The inner fire cover is internally provided with a middle ring cavity and an inner ring cavity, and the outer ring cavity of the outer fire cover, the spoke cavity of the connecting spoke and the middle ring cavity of the inner fire cover are communicated in sequence. The fire cover, the burner and the gas stove can greatly improve the comprehensive performance of the burner.

Description

Fire lid, combustor and gas-cooker

Technical Field

The invention relates to the technical field of burners, in particular to a fire cover, a burner and a gas stove.

Background

Nowadays, gas cookers increasingly pay attention to improvement of heat load and high heat efficiency, and meanwhile pay attention to complete nutrition and health of food materials uniformly heated through uniform flame arrangement, so that cooking is realized. The performance of the existing gas stove is improved through various specific technical means, but the improvement of a single index can be realized often, the overall improvement of product experience is difficult to complete, and even the technical scheme of improving part of single indexes can influence other performance indexes of the gas stove. Therefore, a set of comprehensive and balanced gas stove performance improvement technical scheme is a necessary research direction for improving the overall experience of gas stove products.

Disclosure of Invention

The invention aims to provide a novel fire cover, a burner and a gas stove, which can greatly improve the comprehensive performance of the burner.

In order to achieve the above object, the present invention provides a fire lid, comprising:

the fire sub-covers are annular and are sleeved at intervals; and

the connecting spokes are arranged in the circumferential direction at intervals, and the connecting spokes are connected between any two adjacent sub fire covers or between part of two adjacent sub fire covers;

wherein, all be equipped with a plurality of fire holes on sub-fire lid and the web spoke.

In some embodiments, the plurality of sub fire covers may be two and include:

an outer fire cover; and

the inner fire cover is sleeved in the outer fire cover;

wherein, a plurality of web spokes are arranged along circumference interval and are connected outer fire lid and interior fire lid respectively.

In some embodiments, outer fire lid can include outer fire lid periphery wall and the slope is upwards and the outer fire lid internal perisporium that sets up inwards, and interior fire lid includes the slope is upwards and the interior fire lid internal perisporium that sets up inwards and the slope is upwards and the interior fire lid periphery wall that sets up outwards, all is equipped with a plurality of fire holes along circumference interval arrangement on outer fire lid internal perisporium, interior fire lid internal perisporium and the interior fire lid periphery wall.

In some embodiments, the acute included angle between the inner peripheral wall of the outer fire cover and the horizontal plane may be larger than the acute included angle between the inner peripheral wall of the inner fire cover and the horizontal plane.

In some embodiments, the plurality of fire holes on the inner peripheral wall of the outer fire cover may be circumferentially spaced and heightwise spaced to form a plurality of outer fire hole rings; and/or a plurality of fire holes on the peripheral wall of the inner fire cover are arranged at intervals along the circumferential direction and are arranged at intervals along the height direction to form a plurality of inner ring outer fire hole rings; and/or the plurality of fire holes on the inner peripheral wall of the inner fire cover are arranged along the circumferential direction and are arranged at intervals along the height direction to form a plurality of inner ring inner fire hole rings.

In some embodiments, the height of the top edge of the inner fire cover can be lower than the height of the top edge of the outer fire cover.

In some embodiments, the height of the top edge of the inner fire cover can be lower than or equal to the height of the bottom edge of the inner peripheral wall of the outer fire cover, and the heights of the fire holes in the outer fire cover, the fire holes in the connecting spokes and the fire holes in the inner fire cover are gradually reduced.

In some embodiments, the web spokes may be hollow cylindrical and the cylindrical cavity of the web spokes is a spoke cavity, and the two cylindrical ends of the web spokes are respectively connected with the outer fire cover and the inner fire cover.

In some embodiments, the web spoke may be provided with a spoke cavity and include a spoke top wall defining the spoke cavity, a spoke bottom wall, and two spoke side walls connected between the spoke top wall and the spoke bottom wall, the two spoke side walls are circumferentially spaced apart and the connection positions of the two spoke side walls and the spoke top wall are respectively formed with inclined wall portions inclined upwards, and the two inclined wall portions are provided with a plurality of fire holes at intervals.

In some embodiments, the two inclined wall portions may include a front-side inclined wall portion disposed clockwise toward the front and a rear-side inclined wall portion disposed clockwise toward the rear, the front-side inclined wall portion of the plurality of web spokes or the rear-side inclined wall portion of the plurality of web spokes being formed as the bent wall.

In some embodiments, an axially through secondary air channel may be formed between any two adjacent connecting spokes and the corresponding two adjacent sub fire caps.

In some embodiments, the web spokes may extend in a radial direction of the fire lid and the area of a cross section of the web spokes perpendicular to the radial direction gradually decreases from the outside to the inside.

In some embodiments, an annular partition cavity wall can be arranged between the outer peripheral wall of the inner fire cover and the inner peripheral wall of the inner fire cover to partition the annular cavity of the inner fire cover into a middle annular cavity and an inner annular cavity, the outer peripheral wall of the inner fire cover and the partition cavity wall jointly define the middle annular cavity, and the inner peripheral wall of the inner fire cover and the partition cavity wall jointly define the inner annular cavity.

In some embodiments, an outer ring cavity is formed in the outer fire cover, and the outer ring cavity can be communicated with the spoke cavity of the connecting spoke.

In some embodiments, the outer ring cavity, the spoke cavity, and the middle ring cavity may be in sequential communication.

In some embodiments, the inner fire cover may further comprise an inner fire cover bottom wall that covers the lower opening of the middle ring cavity.

Correspondingly, the invention also provides a burner, which comprises the fire cover.

In addition, the invention also provides a combustion stove which comprises the combustor.

The utility model provides a fire lid, the comprehensive properties of combustor and gas-cooker is good, including a plurality of connecting spokes and a plurality of sub fire lid, a plurality of sub fire lids all are cyclic annular mutual suit, a plurality of connecting spokes connect between arbitrary two adjacent sub fire lids or a plurality of connecting spokes connect between two adjacent sub fire lids along circumference interval, all be equipped with the fire hole on sub fire lid and the connecting spoke, so, not only a plurality of sub fire lids have formed multi-ring flame, connecting spoke also forms flame in the clearance position between two adjacent ring flames, make flame can distribute uniformly on whole fire plane, effectively promote the even fire heating performance of combustor. In addition, the number of fire holes of the fire cover is greatly increased, the heat load can be fully released, and the heat load of the combustor is favorably improved; simultaneously, the flame of web spokes extends inwards, is favorable to promoting the whole efficiency of combustor. In addition, a plurality of connecting spokes are connected between two adjacent sub-fire covers, so that the speed of fire transfer and the stability of ignition are increased.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a fire cover according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the fire lid of FIG. 1 from another perspective;

FIG. 3 is a schematic structural view of a burner to which a first embodiment of the fire cover of the first embodiment of FIG. 1 is applied;

FIG. 5 is a schematic view of another perspective of the burner of FIG. 3;

fig. 4 and 6 correspond to an exploded view of the installation of the burner of fig. 3 and 5;

fig. 7 is a schematic structural view of the burner of fig. 3;

FIGS. 8 and 10 are sectional views of the burner of FIG. 3 in different positions, respectively;

FIG. 9 is an exploded view of FIG. 8;

FIG. 11 is a schematic structural view of a fire lid according to a second embodiment of the present invention, wherein the fire lid of the second embodiment is added with an inner fire lid bottom wall on the basis of the fire lid of the first embodiment;

FIG. 12 is a schematic view of the fire lid of FIG. 11 from another perspective;

FIG. 13 is a schematic view showing the construction of a burner to which the second embodiment of the fire cover of the second embodiment in FIG. 11 is applied;

FIGS. 14 and 15 are exploded views of the installation of the burner of FIG. 13, respectively;

fig. 16 is a schematic structural diagram of the burner of fig. 13, wherein a middle inner ring air duct cover is added to the burner of the first embodiment in addition to the burner of the second embodiment;

FIGS. 17 and 19 are sectional views of the burner of FIG. 13 in different positions, respectively;

FIG. 18 is an exploded view of FIG. 17;

fig. 20 is a schematic structural view of a burner to which a third embodiment of the fire cover of the second embodiment in fig. 11 is applied;

fig. 21 and 22 are exploded views of the installation of the burner of fig. 20 from different perspectives, respectively.

Description of the reference numerals

1000 burner

100 fire lid 101 connecting spoke

Front side wall of 1011 spoke and rear side wall of 1012 spoke

1013 spoke chamber 102 inner fire cover

1021 inner fire cover inner peripheral wall 1022 inner fire cover outer peripheral wall

1023 inner ring cavity of partition cavity wall 1024

1025 bottom wall of fire cover in annular cavity 1026

103 outer fire cover 1031 inner peripheral wall of outer fire cover

1032 outer fire cover peripheral wall 104 fire hole

105 secondary air channel 106 fire stabilizing groove

200 inner ring air flue cover body in furnace end 208

201 inner ring seat 2011 inner ring distribution airway

2012 inner ring seat inner peripheral wall 2013 inner ring seat outer peripheral wall

2015 inner ring seat bottom wall 202 middle ring seat

2021 middle ring distributing air duct 2022 middle ring seat bottom wall

2023 middle ring seat peripheral wall 203 outer ring seat

2031 outer ring distribution air duct 2032 inner peripheral wall of outer ring seat

2033 outer annular seat peripheral wall 2034 outer annular seat bottom wall

204 inner ring ejector pipe 205 outer ring ejector pipe

2051 outer ring of the air outlet 206 of the outer ring injection pipe is connected with an air duct

2061 connecting channel air inlet 207 connecting top wall

300 gas distribution plate 302 one-time mixed gas through hole

Detailed Description

The following detailed description of specific embodiments of the invention refers to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.

The fire cover 100, the burner and the gas range according to the present application, which greatly improve the even fire heating performance of the burner, will be described below with reference to the accompanying drawings.

With the continuous improvement of living standard, people continuously pursue higher quality life style and pay more attention to the concept of healthy diet. However, the inventor of the present application finds that the existing burner focuses on high thermal load and high thermal efficiency performance more and is not concerned enough about even-fire heating performance, which causes that when a user cooks, the flame distribution of the burner causes uneven heating of food materials in a local area of a pot, which causes scorching, and seriously affects the cooking effect of the food materials and the dietary health of the user. In addition, the oil fume volatilized in the air after the food materials are burnt at high temperature contains more carcinogenic substances, so that great harm is brought to the human health, and the cooking experience of a user is also seriously influenced. In view of this, the inventor of the present application has made continuous thinking and research to provide a burner capable of greatly improving even-fire heating performance, so as to bring healthy eating ways and cooking experiences to users.

The utility model provides a fire lid 100 includes a plurality of sub fire lids and a plurality of web spokes 101, and a plurality of sub fire lids all are cyclic annularly, and the diameter of a plurality of sub fire lids is different and from inside to outside interval suit, connects through a plurality of web spokes 101 along circumference interval arrangement between two arbitrary adjacent sub fire lids or between two partial adjacent sub fire lids, all is equipped with a plurality of fire holes 104 on sub fire lid and the web spokes 101. An axially through secondary air channel 105 is formed between any two adjacent connecting spokes 101 and the corresponding two adjacent sub fire covers, so that secondary air required for combustion can be supplemented upwards through the secondary air channel 105.

The existing fire cover is generally realized by arranging multi-ring flames in order to improve the heating performance of even fire, and the volume and the occupied space of the fire cover are larger. The fire cover 100 of the present application is provided with the connecting spokes 101 with the fire holes 104 between two adjacent sub fire covers, and the gap position between two adjacent rings of flames is reasonably utilized, so that not only the plurality of sub fire covers form multi-ring flames, but also the connecting spokes 101 form flames at the gap position between two adjacent rings of flames, so that the flames can be uniformly distributed on the whole fire plane, further the uniform fire heating performance of the burner is effectively improved, and the structure of the fire cover is more compact on the basis of improving the heat load. In which the flames are not actually distributed along a plane, but are spatially distributed, so that the fire plane is understood to be the horizontal projection plane of the flames.

The plurality of fire sub-covers can be two, three, four or more than two fire sub-covers which are sleeved in sequence, so that the burner can form flames with two rings, three rings, four rings or more than two rings. The plurality of fire sub-covers may be concentrically and radially arranged at intervals, that is, the central points of the fire sub-covers are on the same vertical line, or the fire sub-covers may not be concentrically arranged, that is, the central points of the fire sub-covers may be partially offset and not on the same vertical line. Any two adjacent sub fire covers can be connected through a plurality of connecting spokes 101 arranged at intervals along the circumferential direction, for example, any two adjacent sub fire covers can be connected through four, five, six or more connecting spokes 101 arranged at intervals along the circumferential direction, so that the fire cover 100 not only can greatly improve the even fire heating performance of the burner, but also can form the fire cover 100 into a whole, and the fire cover is convenient for a user to unpick, wash and install. Of course, the present application is not limited to this, and the fire cover 100 may also be provided in a split form according to an actual application scenario, that is, a plurality of connecting spokes 101 arranged at intervals in the circumferential direction are provided only between two sub fire covers adjacent to each other.

Alternatively, the web spoke 101 may be hollow and cylindrical, and the cylindrical cavity of the web spoke 101 is the spoke cavity 1013, and the two cylindrical ends of the web spoke 101 are respectively connected to the outer fire cover 103 and the inner fire cover 102. The web spokes 101 may be in the form of a hollow cylinder, a hollow square cylinder, or other hollow irregular cylinders. As shown in fig. 1 and 2, the web spokes 101 are hollow and substantially conical. In addition, each sub fire cover is provided with a sub fire cover cavity, and the fire holes 104 on the sub fire covers are communicated with the corresponding sub fire cover cavities; each web spoke 101 has a spoke cavity 1013 formed therein, and the fire holes in the web spoke 101 are in communication with the corresponding spoke cavity 1013. The spoke cavities 1013 may be communicated with one or two adjacent sub-cap cavities, so that the burner may be provided with only sub-cap distribution air passages, and the sub-cap cavities and the spoke cavities 1013 share the sub-cap distribution air passages, thereby the air supply distribution air passages of the burner may be reduced accordingly; of course, the spoke cavities 1013 may not be communicated with the adjacent sub-fire cover cavities, so the burner may be correspondingly provided with the sub-fire cover distribution air passages and the spoke cavity distribution air passages, which is not limited thereto.

In addition, the fire holes 104 are formed in the plurality of sub-fire covers and the plurality of connecting spokes, so that the number of the fire holes 104 of the fire cover 100 is greatly increased, the heat load can be sufficiently released, and the improvement of the heat load performance of the combustor is facilitated. Simultaneously, because the central zone that flame is close to the combustor burns more, the thermal efficiency is higher, and the flame of a plurality of web spokes 101 of this application extends towards interior, is favorable to promoting the whole thermal efficiency of combustor.

In addition, the existing burner usually only ignites at a certain position on a ring fire cover, then flame slowly spreads along the circumferential direction in a circle, the flame spreading speed is slow, so that part of gas cannot be combusted in time, waste is caused, the environment of a kitchen is polluted, even the situation that the gas is not on spot due to large wind or liquid drops exists sometimes, and the use experience of a user is influenced. The utility model provides a fire lid 100 is owing to be provided with a plurality of web spokes 101 along the circumference interval and connect between two adjacent sub-fire lids, when the ignition, flame can propagate from a plurality of web spokes 101 simultaneously, has increased more ignition points on whole fire lid 100 in other words to can reach the effect of lighting in the twinkling of an eye, greatly increased the speed of passing fire and the stability of ignition, and then also make user's use experience better.

In some embodiments, as shown in fig. 1 and 2, the plurality of sub-fire covers may be two and include an outer fire cover 103 and an inner fire cover 102, the inner fire cover 102 is radially and intermittently sleeved in the outer fire cover 103, and the plurality of connecting spokes 101 are circumferentially and intermittently arranged and respectively connect the outer fire cover 103 and the inner fire cover 102. A secondary air passage 105 may be formed between any adjacent two of the web spokes 101, the outer cap 103, and the inner cap 103, so that secondary air required for combustion may be supplemented upward through the secondary air passage 105. This fire lid 100's simple structure can make flame disperse more evenly on whole fire plane, can promote the even fire heating performance of combustor and improve the heat load and the thermal efficiency of combustor greatly, and in addition, interior fire lid 102 and outer fire lid 103 become a whole, and the user of being convenient for tears open and washes and installs.

Alternatively, the outer fire cover 103 may include an outer fire cover peripheral wall 1032 and an outer fire cover inner peripheral wall 1031, the outer fire cover inner peripheral wall 1031 is disposed obliquely upward and inward, and the plurality of fire holes 104 on the outer fire cover inner peripheral wall 1031 are arranged at intervals in the circumferential direction, the inner fire cover 102 includes an inner fire cover inner peripheral wall 1021 and an inner fire cover peripheral wall 1022, and the outer fire cover inner peripheral wall 1031, the inner fire cover inner peripheral wall 1021, and the inner fire cover peripheral wall 1022 are each provided with a plurality of fire holes 104 arranged at intervals in the circumferential direction. Interior fire lid internal perisporium 1021 slopes upwards and set up inwards and a plurality of fire holes 104 on the internal perisporium 1021 are arranged along circumference interval, and interior fire lid periphery wall 1022 slopes upwards and set up outwards and a plurality of fire holes 104 on the interior fire lid periphery wall 1022 are arranged along circumference interval. As shown in fig. 1 and 2, the outer fire cover peripheral wall 1032 of the outer fire cover 103 is not provided with fire holes, and only the fire holes 104 are provided on the outer fire cover inner peripheral wall 1031, so that a flame gathering effect is produced, and flames are burned toward the center portion, and the heat efficiency is higher; meanwhile, the outer ring fire can be fired toward the inner bag pot, thereby improving the heating efficiency. The inner fire cover 102 is located at the center portion, and the inner peripheral wall 1021 and the outer peripheral wall 1022 of the inner fire cover may be provided with fire holes 104 to increase the number of the fire holes 104 as much as possible. Moreover, the inner peripheral wall 1031 of the outer fire cover, the inner peripheral wall 1021 of the inner fire cover and the outer peripheral wall 1022 of the inner fire cover are obliquely arranged, namely, the fire holes 104 are obliquely arranged towards fire, so that the uniformity of flame in the whole combustion space is more facilitated, the mixing of primary mixed gas and secondary air is facilitated, and the combustion efficiency is further improved. Here, a position relatively close to the center of the fire lid 100 is defined as "inner", and a position relatively far from the center of the fire lid 100 is defined as "outer". The primary mixed gas is a mixed gas of fuel gas and primary air.

Optionally, since the diameter of the outer fire cover 103 is large, in order to increase the cohesive effect of the outer fire cover 103, the acute included angle between the inner peripheral wall 1031 of the outer fire cover and the horizontal plane may be correspondingly increased, so that the inclination of the inner peripheral wall 1031 of the outer fire cover is increased; and the diameter of the inner fire cover 102 is small, in order to weaken the impact between the inner ring flames at the radial opposite positions of the inner fire cover 102 and each other, the acute included angle between the inner peripheral wall 1021 of the inner fire cover and the horizontal plane can be correspondingly reduced, so that the gradient of the inner peripheral wall 1021 of the inner fire cover is reduced. Therefore, since the diameter of the outer fire cover 103 is larger than that of the inner fire cover 102, the acute angle between the inner peripheral wall 1031 of the outer fire cover and the horizontal plane is larger than the acute angle between the inner peripheral wall 1021 of the inner fire cover and the horizontal plane. Moreover, the orientation angles of the three peripheral walls of the outer fire cover inner peripheral wall 1031, the inner fire cover inner peripheral wall 1021 and the inner fire cover outer peripheral wall 1022 are different, so that the fire outlet orientations of the fire holes 104 in the three peripheral walls are different in space, and further the arrangement of flames in the whole combustion space is more uniform.

Optionally, a plurality of fire holes 104 on the inner peripheral wall 1031 of the outer fire cover are arranged at intervals in the circumferential direction and at intervals in the height direction to form a plurality of outer fire hole rings; and/or the plurality of fire holes 104 on the outer peripheral wall 1022 of the inner fire cover are arranged at intervals along the circumferential direction and at intervals along the height direction to form a plurality of inner ring outer fire hole rings; and/or the plurality of fire holes 104 on the inner peripheral wall 1021 of the inner fire cover are arranged along the circumferential direction and are arranged at intervals along the height direction to form a plurality of inner ring inner fire hole rings. A plurality of outer fire hole rings are arranged on the inner peripheral wall 1031 of the outer fire cover at intervals along the height direction, and/or a plurality of inner fire hole rings are arranged on the outer peripheral wall 1022 of the inner fire cover at intervals along the height direction; and/or, the inner fire cover inner peripheral wall 1021 is provided with a plurality of inner ring inner fire hole rings at intervals along the height direction, so that the plurality of fire hole rings are arranged at different heights, the accumulation of flame at a certain height can be avoided, the flame can be combusted in a larger space, the secondary air can enter and mix more easily, and the combustion efficiency can be improved; in addition, the number of fire holes 104 can be increased by providing a plurality of fire hole rings, further increasing the thermal load of the burner. The fire holes between two adjacent fire hole rings can also be arranged in a staggered manner along the circumferential direction, so that the accumulation of flame at a certain circumferential position can be avoided.

Specifically, as shown in fig. 1, two outer fire hole rings are arranged on the inner peripheral wall 1031 of the outer fire cover, two inner outer fire hole rings are arranged on the outer peripheral wall 1022 of the inner fire cover, and one inner fire hole ring is arranged on the inner peripheral wall 1021 of the inner fire cover. Of course, the present application is not limited thereto, and two, three, four or more fire hole rings may be provided on the outer fire cover inner peripheral wall 1031 and/or the inner fire cover outer peripheral wall 1022 and/or the inner fire cover inner peripheral wall 1021 according to actual use requirements; the height interval size between two adjacent fire hole rings can be the same or different, and can be reasonably set according to actual use requirements.

Further, the height of the top edge of the inner fire cover 102 can be lower than that of the top edge of the outer fire cover 103, so that the height positions of the fire holes 104 of the outer fire cover 103 and the fire holes 104 on the inner fire cover 102 in the vertical direction are at least partially staggered, the accumulation of flames of the outer fire cover 103 and the flames of the inner fire cover 102 in the same height position is avoided, the flames can be combusted in a larger space, secondary air in the space is more, the combustion efficiency is higher, and the heat load can be fully released. When the height of the top edge of the inner fire cover 102 is lower than that of the top edge of the outer fire cover 103, the height of the bottom edge of the outer fire cover 103 can be higher than, equal to or lower than that of the top edge of the inner fire cover 102. When the height of the bottom edge of the outer fire cover 103 is lower than that of the top edge of the inner fire cover 102, the height positions of the fire holes 104 on the outer fire cover 103 and the fire holes 104 on the inner fire cover 102 in the vertical direction can be partially overlapped.

Further, the height of the top edge of the inner fire cover 102 is lower than or equal to the height of the bottom edge of the inner peripheral wall 1031 of the outer fire cover, so that the height positions of the fire holes 104 of the outer fire cover 103 and the fire holes 104 of the inner fire cover 102 in the vertical direction can be completely staggered and overlapped. Moreover, the heights of the fire holes 104 on the outer fire cover 103, the fire holes 104 on the connecting spokes 101 and the fire holes 104 on the inner fire cover 102 are sequentially decreased progressively, so that the height positions of the fire holes 104 of the whole fire cover 100 in the vertical direction can be staggered and overlapped, flame is further combusted in a larger space, the accumulation of flame is avoided, secondary air can enter more easily, the combustion efficiency is higher, and heat load can be fully released.

Optionally, the web spoke 101 includes a spoke top wall defining a spoke cavity 1013, a spoke bottom wall, and two spoke side walls connected between the spoke top wall and the spoke bottom wall, the two spoke side walls are arranged at intervals along the circumferential direction, the connection positions of the two spoke side walls and the spoke top wall are respectively formed with inclined wall parts which incline upwards, and the two inclined wall parts are provided with a plurality of fire holes 104 at intervals. The plurality of fire holes 104 in the two inclined wall portions communicate with the spoke cavity 1013 of the web spoke 101. As shown in fig. 1, the fire holes 104 on the two inclined wall parts are provided with opposite orientations in the circumferential direction on the web spokes 101, so that the fire outlet orientation angle of the fire cover 100 in the space is increased, the flame can be more uniformly dispersed in the whole space, the combustion efficiency is higher, and the heat load can be sufficiently released. In addition, the fire holes 104 are formed on the inclined wall portion of the web spokes 101, so that flames can be propagated obliquely, thereby improving ignition effects between each other and igniting the adjacent fire holes in time when a flameout or a poor fire propagation occurs.

Alternatively, as shown in fig. 1, the two inclined wall portions include a front inclined wall portion 1011 disposed clockwise toward the front and a rear inclined wall portion 1012 disposed clockwise toward the rear, the front inclined wall portion 1011 of the plurality of web spokes 101 or the rear inclined wall portion 1012 of the plurality of web spokes 101 is formed as a bent wall on which the plurality of fire holes 104 are arranged at intervals. As shown in figure 1, a plurality of bent walls in the same direction can form a swirling flame effect, and flame with consistent flame outlet swirling direction can generate a certain turbulent flow effect on a combustion area, so that secondary air can be promoted to be uniformly distributed, and the combustion efficiency is improved. In addition, the rotating flame effect formed by the bent walls in the same direction enables the flame to generate rotating motion feeling in vision, and the appearance is more attractive.

Optionally, an annular partition wall 1023 is provided between the inner fire cover outer peripheral wall 1022 of the inner fire cover 102 and the inner fire cover inner peripheral wall 1021 of the inner fire cover 102 to partition the annular cavity of the inner fire cover 102 into an intermediate annular cavity 1025 and an inner annular cavity 1024, the inner fire cover outer peripheral wall 1022 and the partition wall 1023 together define the intermediate annular cavity 1025, and the inner fire cover inner peripheral wall 1021 and the partition wall 1023 together define the inner annular cavity 1024. As shown in fig. 2, 8 to 10, the fire holes 104 of the outer peripheral wall 1022 of the inner fire cover communicate with the middle ring cavity 1025, and the fire holes 104 of the inner peripheral wall 1021 of the inner fire cover communicate with the inner ring cavity 1024. The middle ring cavity 1025 is arranged close to the inner ring cavity 1024, so that the inner fire cover 102 can form two rings of flames in the center of the fire cover 100, and further, the firepower is larger, the heat load is higher, and the flames are dispersed more uniformly. In addition, be equipped with outer ring chamber 1033 in the outer fire lid 103, the integrated setting in inner fire lid 102 including well ring chamber 1025 and inner ring chamber 1024, two ring fire lids form three ring chamber inside and outside promptly, not only structural succinct compacter, can also save sheet metal material, reduction in production cost.

Alternatively, the spoke cavities 1013 of the web 101 can be in communication with the outer ring cavity 1033 of the outer fire cover 103 or the spoke cavities 1013 of the web 101 can be in communication with the middle ring cavity 1025 of the inner fire cover 102, and as such, the spoke cavities 1013 of the web 101 can introduce the primary mixed gas from the outer ring cavity 1033 of the outer fire cover 103 or the middle ring cavity 1025 of the inner fire cover 102. When the spoke cavities 1013 of the connecting spokes 101 can communicate with the outer ring cavity 1033 of the outer flame cover 103, part of the primary mixed gas in the outer ring cavity 1033 can be introduced into the spoke cavities 1013 relatively close to the combustion center region for combustion, thereby improving the overall combustion efficiency of the combustor. In addition, the outer ring cavity 1033 and the spoke cavities 1013 can share the primary mixed gas distribution air passage and the injection passage, namely, the primary mixed gas of the outer ring cavity 1033 and the spoke cavities 1013 can be supplied by the same gas nozzle and the same gas inlet passage, so that not only can synchronous regulation be realized, but also the whole flame surface synchronous regulation can be realized by matching with a simple valve regulation strategy, the control logic is simplified, and the production cost of the combustor is favorably reduced. Meanwhile, the plurality of connecting spokes 101 can increase the airflow channel of the burner, which is beneficial to the uniform arrangement of airflow and stable combustion.

Alternatively, the outer ring chamber 1033, the spoke chambers 1013, and the middle ring chamber 1025 can be sequentially communicated, such that the primary mixture gas of the outer ring chamber 1033 can be introduced through the spoke chambers 1013 to the middle ring chamber 1025 of the inner fire cover 102 near the combustion center region for combustion, further improving the overall combustion efficiency of the combustor. In addition, the fire cover 100 can only be provided with two injection pipes of the inner ring injection pipe and the outer ring injection pipe, and two gas nozzles of the inner ring gas nozzle and the outer ring gas nozzle to supply gas, so that three-ring flame can be formed, namely, primary mixed gas of the outer ring cavity 1033, the spoke cavity 1013 and the middle ring cavity 1025 can be supplied by the same gas nozzle and the same gas inlet channel, synchronous adjustment is further realized, and a valve regulation strategy and a control logic are simpler. And the three-ring gas supply of the combustor is realized under the condition that a nozzle and an injection pipe are not additionally arranged, so that the control logic and the structure are simplified, and the production cost of the combustor is greatly reduced. The plurality of spoke cavities 1013 are secondary channels of the outer 1033 and middle 1025 ring cavities that further facilitate uniform gas flow arrangement and stable combustion. Moreover, the outer and

middle ring chambers

1033 and 1025 are connected by the plurality of spoke chambers 1013, which can reduce the pressure difference in different areas of the combustion space and reduce the back pressure, thereby more uniformly discharging the flame, and further improving the uniformity of combustion, so that the flame is more uniformly dispersed in the whole space.

In addition, outer ring chamber 1033, spoke chamber 1013 and middle ring chamber 1025 can communicate in proper order, when the user needs to carry out the big fire culinary art, often expect that the firepower is better more and can guarantee even fireness when providing big firepower, this moment the inner ring draws and penetrates two pipes and inner ring gas nozzle and outer ring gas nozzle two gas nozzles of penetrating pipe and corresponding for three ring chamber and a plurality of spoke chamber 1013 air supplies with to the inner ring, outer ring chamber 1033, spoke chamber 1013, middle ring chamber 1025 and inner ring chamber 1024 correspond and can form three ring flames and a plurality of middle flames, guaranteed that furnace end 200 has enough high heat load to carry out big fire culinary art, also can make even fireness and the thermal efficiency of combustor better. When a user needs to cook with small fire, the fire is often expected to be as small as possible, at the moment, the outer ring gas nozzle does not supply gas to the outer ring cavity 1033 and the middle ring cavity 1025, namely, the flame corresponding to the outer ring cavity 1033 and the middle ring cavity 1025 is extinguished, and only the inner ring injection pipe and the inner ring gas nozzle supply gas to the inner ring cavity 1024, so that only the inner ring cavity 1024 can form inner ring flame, and the small fire cooking is realized. And, because the setting of well ring chamber 1025 pressing close to inner ring chamber 1024, guaranteed the high thermal load and the even fire nature requirement of the inner ring combustion zone when big fire culinary art, so the inner ring gas nozzle of inside ring chamber 1024 air feed can do as little as possible to can provide littleer firepower when the small fire culinary art, satisfy the demand of the little fire culinary art of user's littleer firepower, user experience is better.

Alternatively, the web spokes 101 extend in the radial direction of the fire cover 100, so that the arrangement path of the web spokes 101 between the outer fire cover 103 and the inner fire cover 102 can be minimized, the flow resistance can be reduced, and the primary mixed gas in the outer annular chamber 1033 can more smoothly pass through the spoke chamber 1013 into the middle annular chamber 1025. In addition, the area of the cross section of the web spokes 101 perpendicular to the radial direction gradually decreases from the outside to the inside, so that the secondary air passage 105 can have a sufficient passage area, and further the secondary air can be better supplemented upwards.

Optionally, the fire cover 100 may further have a fire stabilizing groove 106 for stabilizing the flame combustion, as shown in fig. 1, the inner fire cover 102 may have an annular fire stabilizing groove and the connecting spokes 101 have a strip-shaped fire stabilizing groove.

It should be noted that, in the above-mentioned embodiment, when the number of the sub fire covers is two, of course, the number of the sub fire covers may be three, four, five or more, at this time, each sub fire cover may be provided with a sub fire cover cavity, and the spoke cavities 1013 may be respectively communicated with the sub fire cover cavities adjacent to both ends of the spoke cavities 1013, so that the number of nozzles and distribution air passages may be reduced, which is beneficial to simplify the control logic and the structure of the burner, and can reduce the production cost of the burner head, and improve the combustion efficiency and the heat load of the burner.

In addition, the fire cover 100 has the advantages of good comprehensive performance, reasonable and simple structure, simple manufacturing process and low manufacturing cost, and can be processed by adopting a sheet metal part with thinner thickness.

Accordingly, the present application also provides a burner including the fire cover 100 described above. The burner may further include a burner positioned below the fire cover 100 to supply air, and an air distribution plate 300 disposed between the burner 200 and the fire cover 100. The specific structure of the fire cover 100 refers to the above embodiments, and since the burner 1000 of the present application adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

Optionally, the burner 1000 may also include a burner 200, and the fire cap 100 of the present application may be adapted to a variety of different burners 200 to form a variety of burners 1000. The following illustrates the burner 200 when the fire cover 100 includes the outer ring cavity 1033, the spoke cavity 1013, the middle ring cavity 1025, and the inner ring cavity 1024. As shown in fig. 20 to 22, in the burner 1000 of the third embodiment provided with the fire cap of the second embodiment, the burner head 200 may include only two air passages, an outer ring distribution air passage 2031 and an inner ring distribution air passage 2011, the outer ring distribution air passage 2031 is communicated with the outer ring chamber 1033, the spoke chamber 1013 and the middle ring chamber 1025 of the outer fire cap 103 in sequence to supply the primary mixture, and the inner ring distribution air passage 2011 is communicated with the inner ring chamber 1024 of the inner fire cap 102 to supply the primary mixture. At this time, since the middle ring cavity 1025 of the inner fire cover 102 is not communicated with the distribution air channel of the burner 200, the inner fire cover 102 further includes an inner fire cover bottom wall 1026 covering the lower opening of the middle ring cavity 1025, so that the leakage of the primary mixed gas of the middle ring cavity 1025 from the lower opening of the middle ring cavity 1025 can be avoided.

Alternatively, as shown in fig. 3 to 10, in the burner 1000 of the first embodiment provided with the fire cover 100 of the first embodiment, the burner 200 may also include three air passages, namely, an outer ring distribution air passage 2031, a middle ring distribution air passage 2021 and an inner ring distribution air passage 2011, wherein the outer ring distribution air passage 2031, the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 are respectively communicated with the outer ring cavity 1033, the middle ring cavity 1025 and the inner ring cavity 1024 of the outer fire cover 103 to supply the primary mixture, and the outer ring distribution air passage 2031 may be communicated with the spoke cavity 1013 through the outer ring cavity 1033 and/or the middle ring distribution air passage 2021 may be communicated with the spoke cavity 1013 through the middle ring cavity 1025 to supply the primary mixture.

Alternatively, as shown in fig. 13 to 19, in the burner 1000 of the second embodiment provided with the fire cover 100 of the second embodiment, the burner 200 may further include three air passages, namely, an outer ring distribution air passage 2031, a middle ring distribution air passage 2021 and an inner ring distribution air passage 2011, but a manufacturer or a user may add a middle ring air passage cover 208 detachably covering the upper opening of the middle ring distribution air passage 2021, so that after the middle ring air passage cover 2021 is covered by the inner ring air passage cover 208 in use, the burner 200 provided with three distribution air passages may also be used as a burner 200 with only two distribution air passages, thereby increasing the adaptability of the burner 200. When the middle ring cavity 1025 of the inner fire cover 102 is not communicated with the middle ring distribution air passage 2021 of the burner 200, the inner fire cover 102 further comprises an inner fire cover bottom wall 1026 covering the lower opening of the middle ring cavity 1025, so that the leakage of the primary mixed gas of the middle ring cavity 1025 can be avoided from the lower opening of the middle ring cavity 1025.

Optionally, as shown in fig. 3 to 10, the burner 200 is provided with an inner ring distribution air passage 2011, an outer ring distribution air passage 2031, and an intermediate ring distribution air passage 2021 between the inner ring distribution air passage 2011 and the outer ring distribution air passage 2031. The bottom end of the air distribution plate 300 is disposed above the outer ring distribution air passage 2031, and the plurality of primary mixed air passing holes 302 are communicated with the outer ring distribution air passage 2031. The middle ring distribution air passage 2021 communicates with the middle ring cavity 1025, and the inner ring distribution air passage 2011 communicates with the inner ring cavity 1024. So, three distribution air flue of furnace end 200 can be corresponding to carry out stable air feed to the three ring chamber of fire lid 100, goes out the fire more reliable and more stable.

Optionally, the middle ring distribution air passage 2021 may be communicated with the outer ring distribution air passage 2031 through the middle and outer ring communication air passage 206, the furnace end 200 further includes an inner ring ejector pipe 204 and an outer ring ejector pipe 205, the inner ring ejector pipe 204 is communicated with the inner ring distribution air passage 2011, and the outer ring ejector pipe 205 is sequentially communicated with the outer ring distribution air passage 2031, the middle and outer ring connection air passage 206, and the middle ring distribution air passage 2021. Thus, the outer ring ejector pipe 205 supplies the primary mixed gas to the outer ring distribution gas passage 2031 and the inner ring distribution gas passage 2021 in sequence. Because the flame burns closer to the central area of the burner, the higher the thermal efficiency, the burner 200 of the present application introduces the primary mixed gas of the outer ring distribution gas passage 2031 into the middle ring distribution gas passage 2021 relatively close to the central combustion area, which is beneficial to improving the overall combustion efficiency of the burner. And, the furnace end 200 of this application only need two to draw and penetrate the pipe can form three ring fire for three distribution air flue air feed, not only can make furnace end 200's structure simpler, can also reduce the quantity that sets up of drawing production parts such as pipe and nozzle, has saved manufacturing cost greatly and the maintenance in the later stage of being more convenient for. In addition, furnace end 200 of this application only need two to draw and penetrate the pipe and can give three distribution air flue air feed, and valve regulation and control strategy and control logic also can be simpler.

In addition, well ring distribution air flue 2021 and outer loop distribution air flue 2031 intercommunication, when the user need carry out big fire culinary art, often expect that the firepower is better more and can guarantee even fire nature when providing big firepower, the inner ring draws and penetrates pipe 204 and outer loop and draws the corresponding air feed for three distribution air flue of pipe 205, inner ring distribution air flue 2011, well ring distribution air flue 2021 and outer loop distribution air flue 2031 correspond and can form three ring flame, guaranteed that furnace end 200 has enough high thermal load to carry out big fire culinary art, and the even fire nature and the thermal efficiency of three ring flame heating are better. When a user needs to cook with a small fire, the fire is often expected to be as small as possible, at the moment, the inner ring injection pipe 204 does not supply air to the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021, namely, the flame corresponding to the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 is extinguished, and only the inner ring injection pipe 204 supplies air to the inner ring distribution air passage 2011, so that only the inner ring distribution air passage 2011 can form inner ring flame, and the small fire cooking is realized. And, because the setting of well ring distribution air flue 2021 is pressed close to inner ring distribution air flue 2011, has guaranteed high thermal load and the even fire nature requirement in the inner ring burning zone when big fire cooks, so the inner ring gas nozzle of inner ring distribution air flue 2011 air feed can do for a short time as far as possible to can provide littleer firepower when the small fire cooks, satisfy the demand of the little fire culinary art of user's littleer firepower, user experience is better.

Alternatively, as shown in fig. 7, the burner 200 may include an inner ring seat 201, an inner ring seat 202, and an outer ring seat 203, which are sequentially nested, the outer ring seat 203 may include an outer ring seat inner peripheral wall 2032, an outer ring seat outer peripheral wall 2033, and an outer ring seat bottom wall 2034 that define an outer ring distribution airway 2031, the middle ring seat 202 may include a middle ring seat inner peripheral wall, a middle ring seat outer peripheral wall 2023, and a middle ring seat bottom wall 2022 that define a middle ring distribution airway, and the inner ring seat 201 may include an inner ring seat inner peripheral wall 2012, an inner ring seat outer peripheral wall 2013, and an inner ring seat bottom wall 2015 that define an inner ring distribution airway 2011.

The arrangement form and the arrangement position of the intermediate communication channel may be various, for example, the intermediate communication channel may be a curved channel, and both ends of the intermediate communication channel are respectively connected to the outer ring base wall 2034 and the inner ring base wall 2022 to correspondingly communicate with the outer ring distribution air passage 2031 and the inner ring distribution air passage 2021; alternatively, the intermediate communication passage may be a curved passage, and both ends of the intermediate communication passage are respectively connected to the outer ring seat bottom wall 2034 and the intermediate ring seat outer peripheral wall 2023 to be correspondingly communicated with the outer ring distribution air passage 2031 and the intermediate ring distribution air passage 2021, and the like. Alternatively, as shown in fig. 10, the middle communication channel may be a middle and outer ring connecting air channel 206 disposed between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032, and the middle and outer ring connecting air channel 206 is a straight channel, so that the structure of the burner 200 is simpler and more reasonable, and the middle and outer ring connecting air channel 206 may be a straight channel to shorten the channel length and reduce the flow resistance as much as possible. In addition, the middle and outer ring connecting air ducts 206 in fig. 10 are only shown in one, but the application is not limited thereto, and the middle and outer ring connecting air ducts 206 may also be multiple and arranged between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 at intervals in the circumferential direction.

Further, as shown in fig. 7, the inner ring seat outer peripheral wall 2013 and the middle ring seat inner peripheral wall may be formed as a common middle inner ring common peripheral wall. Thus, the middle ring distribution air passage 2021 can be arranged closer to the inner ring distribution air passage 2011, the flame of the middle ring distribution air passage 2021 can be combusted closer to the central area, and the thermal efficiency is higher. And under the condition of ensuring the requirements of high heat load and uniform fire of the inner ring combustion area during big fire cooking, the inner ring gas nozzle can be made as small as possible, thereby providing smaller firepower during small fire cooking. In addition, the outer peripheral wall 2013 of the inner ring seat and the inner peripheral wall of the middle ring seat form a shared common peripheral wall of the middle ring, so that the wall body material of the furnace end can be reduced, the production cost of the furnace end is reduced, and the structure of the furnace end can be simpler and more compact.

Specifically, as shown in fig. 7, the inner ring seat 201 is sleeved in the outer ring seat 203, the middle ring seat 202 is sleeved between the outer ring seat 203 and the inner ring seat 201, and accordingly, the outer ring distribution air passage 2031, the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 are also sleeved in sequence from outside to inside. The distance between the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 is smaller than the distance between the middle ring distribution air passage 2021 and the outer ring distribution air passage 2031, and the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 are adjacently arranged to be as close to the inner ring distribution air passage 2011 located at the center as possible, so that the flame of the middle ring distribution air passage 2021 is burned closer to the center region, and the thermal efficiency is higher. Moreover, the top surfaces of the outer ring base bottom wall 2034, the middle ring base bottom wall 2022 and the inner ring base bottom wall 2015 are all formed into inclined ramp surfaces along the airflow direction, which is favorable for reducing the flow resistance of primary mixed gas, the gas outlet is smoother, and the stability of flame combustion is better. Wherein, the primary mixed gas is the mixed gas of fuel gas and primary air.

Optionally, as shown in fig. 10, the outer ring ejection tube air outlet 2051 of the outer ring ejection tube 205 is fixed on the outer circumferential wall 2033 of the outer ring seat, and the middle and outer ring communication air passage 206 and the outer ring ejection tube 205 are both straight-tube-shaped and extend outward along the same radial direction, so that the length of the passage connecting the middle and outer ring communication air passages 206 is the shortest, and the flow resistance is smaller. Moreover, the communication channel gas inlet 2061 of the middle and outer ring connecting gas passage 206 is arranged on the inner peripheral wall 2032 of the outer ring base, the communication channel gas inlet 2061 is over against the outer ring injection pipe gas outlet 2051, and the area of the communication channel gas inlet 2061 is smaller than that of the outer ring injection pipe gas outlet 2051, so that the flow resistance of the primary mixed gas is smaller, and the primary mixed gas is more smoothly guided to the middle ring distribution gas passage 2021 to ensure that the middle ring distribution gas passage 2021 has enough gas supply amount.

Further, the inner ring injection pipe 204 may be a straight pipe, so that the flow resistance and the flow pressure loss of the inner ring injection pipe 24 may be reduced, and the burner 200 may be used for small-fire cooking with small fire and stable combustion.

Further, the outer ring ejection pipe 205 and the inner ring ejection pipe 204 may extend in the radial direction and be fixed to the outer ring base peripheral wall 2033 of the outer ring base 203 at intervals in the circumferential direction. Due to the existence of the middle and outer ring communicating air passage 206, if the inner and outer injection pipes of the existing furnace end are parallel and parallel, the inner ring injection pipe 24, the middle and outer ring communicating air passage 206 or the outer ring injection pipe 25 are partially required to be bent, so that the flow resistance of primary mixed gas is increased. Therefore, as shown in fig. 3 to 7, the outer ring ejection pipe 205 and the inner ring ejection pipe 204 of the present application are circumferentially fixed on the outer ring base peripheral wall 2033 of the outer ring base 203 at intervals, so that the arrangement of the middle and outer ring communication air passage 206 can be more convenient, and the outer ring ejection pipe 205 and the inner ring ejection pipe 204 can be both arranged in a straight pipe shape extending along the radial direction, so as to reduce the flow resistance, further make the flame more stable, and make the small flame smaller when cooking with small flame. As shown in fig. 3 to 7, the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may be arranged in a staggered manner at a right angle, but the present application is not limited thereto, and the outer ring ejector pipe 205 and the inner ring ejector pipe 204 may be arranged in a staggered manner at an acute angle or an obtuse angle.

Optionally, the length of the inner ring ejector pipe 204 outside the outer circumferential wall 2033 of the outer ring seat can be not longer than 15cm, so that the secondary air ejection coefficient of the inner ring ejector pipe 204 can be increased, the air inlet amount, the mixing speed and the flowing speed of fuel gas and air are increased, the air inlet pressure loss is reduced in a small-fire state, and stable combustion in a small-fire working condition is ensured. Further, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may be longer than 10cm, and further, the length of the inner ring injection pipe 204 outside the outer circumferential wall 2033 of the outer ring seat may be longer than 6cm and shorter than 10 cm.

Because the central combustion area is provided with the inner ring distribution air passage 2011 and the middle ring distribution air passage 2021, the heat load of the central combustion area is greatly improved, more air needs to be supplemented to the central combustion area correspondingly, so that insufficient air supplement can be caused to deteriorate the combustion condition, and the heat efficiency is reduced and the smoke emission is not up to standard. Therefore, a channel for supplementing secondary air may be additionally provided to the burner 200.

Alternatively, a connecting top wall 207 may be provided between the top end peripheral edge of the middle ring base outer peripheral wall 2023 and the top end peripheral edge of the outer ring base inner peripheral wall 2032, and the connecting top wall 207 may be provided with a top wall vent (not shown) that axially penetrates therethrough. In this way, secondary air can be supplemented to the central combustion region axially and upwardly between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 through the top wall vent, so that the combustion of the central combustion region is more sufficient, the thermal efficiency is higher, and the emission of harmful gases can be reduced.

Optionally, the inner ring seat inner peripheral wall 2012 can encircle and be formed with the central blow vent (not shown in the figure) that the axial is link up, like this, accessible central blow vent upwards supplements the secondary air to central combustion area along the axial for central combustion area's burning is more abundant, and the emission of carbon monoxide is lower, and combustion efficiency is higher, and the gas is when the burning simultaneously, and central combustion area's air current is stable, thereby the burning is also stable, has solved the inner ring and has left flame flameout scheduling problem.

In addition, the burner 200 is further provided with an ignition needle receiving groove for mounting an ignition needle, and the ignition needle receiving groove may be disposed in the central vent.

In addition, because the outer ring cavity 1033, the spoke cavity 1013 and the middle ring cavity 1025 of the fire cover 100 are sequentially communicated, the outer ring distribution airway 2031, the middle outer ring connecting airway 206 and the middle ring distribution airway 2021 of the burner 200 are sequentially communicated, the outer ring distribution airway 2031 is communicated with the outer ring cavity 1033, and the middle outer ring connecting airway 206 is communicated with the middle ring cavity 1025, that is, the outer ring distribution airway 2031, the middle outer ring connecting airway 206, the middle ring distribution airway 2021, the middle ring cavity 1025, the spoke cavity 1013 and the outer ring cavity 1033 are sequentially communicated end to end, thus, an upper communication channel and a lower communication channel are arranged between the outer ring cavity 1033 and the middle ring cavity 1025, the negative pressure for communication between the outer ring cavity 1033 and the middle ring cavity 1025 is greatly reduced, the pressure difference between the two channels is smaller, primary mixed gas can be more uniformly distributed between the outer ring cavity 1033 and the middle ring cavity 1025, and the fire of the burner 1000 is more uniform and more stable, and the fire is more uniform.

Specifically, the flow path of the primary mixed gas of the outer ring injection pipe 205 is as follows: the primary mixed gas of the outer ring injection pipe 205 enters the outer ring distribution airway 2031 from the outer ring injection pipe gas outlet 2051, and part of the primary mixed gas entering the outer ring distribution airway 2031 flows into the channels on the left and right sides of the outer ring distribution airway 2031 and upwards enters the outer ring cavity 1033 of the fire cover 100. A portion of the primary mixed gas entering the outer annular chamber 1033 is discharged through the fire holes 104 of the outer fire cover 103 and combusted, and another portion of the primary mixed gas entering the outer annular chamber 1033 can sequentially enter the spoke chambers 1013 of the connecting spokes 101 and the middle annular chamber 1025 of the inner fire cover 102 and be discharged through the connecting spokes 101 and the fire holes 104 of the inner fire cover peripheral wall 1022 and combusted. Another part of the primary mixed gas entering the outer ring distribution gas passage 2031 flows to the middle ring distribution gas passage 2021 through the middle outer ring connecting gas passage 206 and upwards enters the middle ring cavity 1025 of the inner fire cover 102, the part of the primary mixed gas entering the middle ring cavity 1025 is discharged through the fire holes 104 on the outer peripheral wall 1022 of the inner fire cover and is combusted, and another part of the primary mixed gas entering the middle ring cavity 1025 can enter the spoke cavities 1013 of the connecting spokes 101 and the outer ring cavity 1033 of the outer fire cover 103 in sequence and is discharged through the connecting spokes 101 and the fire holes 104 on the outer fire cover 103 and is combusted.

Flow path of primary mixed gas of the inner ring injection pipe 204: the primary mixed gas of the inner ring injection pipe 204 flows to the inner ring distribution air passage 2011 and upwards enters the inner ring cavity 1024 of the inner fire cover 102, and the primary mixed gas entering the inner ring cavity 1024 is discharged through the fire holes 104 on the inner peripheral wall 1021 of the inner fire cover and is combusted.

In addition, the present application also proposes a gas range, which includes the burner 1000 described above. Similarly, the specific structure of the burner refers to the above embodiments, and since the gas stove of the present application adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In summary, the application provides a novel fire lid 100, combustor 1000 and gas-cooker, and this fire lid 100 and combustor accessible many web spokes 101 admit air the outer loop and introduce the regional burning of burning center, improve overall efficiency, and the flame of polycyclic can be by less nozzles and draw the ejector pipe air feed to can cooperate simple valve regulation and control strategy to realize whole flame face synchro control. The plurality of connecting spokes arranged between two adjacent sub fire covers can increase the airflow channel of the fire cover 100, which is beneficial to the uniform arrangement of airflow and the stable combustion. The plurality of connecting spokes are provided with fire holes 104, which is equivalent to increasing more ignition points on the whole fire cover 100, thereby achieving the effect of instantaneous ignition, and greatly increasing the fire transfer speed and the ignition stability. The fire holes 104 on the plurality of sub-fire covers and the plurality of connecting spokes 101 are in a large number, and are distributed in a staggered mode in fire outlet angles and fire outlet heights, so that the arrangement of flames on the whole fire plane and the whole combustion space is more uniform, the fire homogenizing performance is good, and the heat load and the combustion efficiency are higher.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. 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 and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A fire lid, comprising:

the fire sub-covers are annular and are sleeved at intervals; and

the connecting spokes are arranged between any two adjacent sub fire covers or part of two adjacent sub fire covers and are connected by the connecting spokes at intervals along the circumferential direction;

wherein, a plurality of fire holes are arranged on the sub-fire cover and the connecting spokes;

a plurality of said fire sub-caps comprising:

an outer fire cover; and

the inner fire cover is sleeved in the outer fire cover;

the plurality of connecting spokes are arranged at intervals along the circumferential direction and are respectively connected with the outer fire cover and the inner fire cover;

an annular separation cavity wall is arranged between the outer peripheral wall of the inner fire cover and the inner peripheral wall of the inner fire cover so as to separate the annular cavity of the inner fire cover into a middle annular cavity and an inner annular cavity, the outer peripheral wall of the inner fire cover and the separation cavity wall jointly define the middle annular cavity, and the inner peripheral wall of the inner fire cover and the separation cavity wall jointly define the inner annular cavity;

establish outer ring chamber in the outer fire lid, web spoke is the cavity tube-shape just web spoke's barrel cavity is the spoke chamber, outer ring chamber web spoke chamber and well ring chamber communicates in proper order, well ring chamber with interior ring chamber sets up independently.

2. The fire cover of claim 1, wherein said outer fire cover comprises an outer fire cover peripheral wall and an outer fire cover inner peripheral wall disposed obliquely upward and inward, said inner fire cover comprises an inner fire cover inner peripheral wall disposed obliquely upward and inward and an inner fire cover outer peripheral wall disposed obliquely upward and outward, said outer fire cover inner peripheral wall, said inner fire cover inner peripheral wall and said inner fire cover outer peripheral wall are all provided with a plurality of said fire holes arranged circumferentially at intervals.

3. The fire cover of claim 2, wherein an acute angle included angle between the inner peripheral wall of the outer fire cover and a horizontal plane is greater than an acute angle included angle between the inner peripheral wall of the inner fire cover and a horizontal plane.

4. The fire cover of claim 2, wherein a plurality of said fire holes on the inner peripheral wall of said outer fire cover are circumferentially spaced and heightwise spaced to form a plurality of outer fire hole rings; and/or the presence of a gas in the gas,

the fire holes in the outer peripheral wall of the inner fire cover are circumferentially arranged at intervals and are arranged at intervals in the height direction to form a plurality of inner ring outer fire hole rings; and/or the presence of a gas in the gas,

the fire hole is arranged and is followed the direction of height interval along circumference in a plurality of on the interior fire lid internal perisporium and arrange in order to form a plurality of inner ring fire hole circles.

5. The fire lid of claim 1, wherein the height of the top edge of the inner fire lid is lower than the height of the top edge of the outer fire lid.

6. The fire cover of claim 5, wherein the height of the top edge of the inner fire cover is lower than or equal to the height of the bottom edge of the inner peripheral wall of the outer fire cover, and the heights of the fire holes in the outer fire cover, the fire holes in the web spokes and the fire holes in the inner fire cover are gradually decreased.

7. The fire cover of claim 1, wherein both cylinder ends of the connection spokes are connected with the outer fire cover and the inner fire cover, respectively.

8. The fire cover of claim 7, wherein the web spokes include a spoke top wall, a spoke bottom wall and two spoke side walls connected between the spoke top wall and the spoke bottom wall, the two spoke side walls being circumferentially spaced apart and having upwardly inclined wall portions formed at locations where the two spoke side walls are connected to the spoke top wall, the two inclined wall portions being spaced apart to define a plurality of fire holes.

9. The fire cover according to claim 8, wherein the two inclined wall portions include a front-side inclined wall portion disposed forwardly in a clockwise direction and a rear-side inclined wall portion disposed rearwardly in a clockwise direction, the front-side inclined wall portion of the plurality of the web spokes or the rear-side inclined wall portion of the plurality of the web spokes being formed as a bent wall.

10. The fire cover according to claim 1, wherein an axially through secondary air passage is formed between any two adjacent connecting spokes and the corresponding two adjacent sub fire covers.

11. The fire lid of claim 10, wherein the web spokes extend in a radial direction of the fire lid and cross-sections of the web spokes perpendicular to the radial direction are gradually decreased in area from outside to inside.

12. The fire lid of any one of claims 1 to 11, wherein the inner fire lid further comprises an inner fire lid bottom wall covering the lower opening of the middle ring cavity.

13. A burner, characterized in that it comprises a fire cover according to any one of claims 1 to 12.

14. A combustion stove, characterized in that it comprises a burner according to claim 13.