阅读说明：本技术 一种燃气灶 (Gas stove ) 是由 苑善通 方松青 王书春 张蒙恩 贺立军 张恩玉 于 2020-04-23 设计创作，主要内容包括：本发明公开了一种燃气灶,包括分气盘和炉头,分气盘的第三外环侧壁的底端面连接一环形斜面的外周沿,环形斜面向分气盘中轴线方向向下倾斜；环形斜面的内周沿与炉头的第四外环侧壁的顶端面抵接；在环形斜面上围绕其内周沿设置有向下凸出的环形止挡部；在环形止挡部的内周面上形成有若干个周向布设的隔热凸起,隔热凸起与炉头的第四外环侧壁的外周面抵接。本发明的燃气灶,通过设计环形止挡部及隔热凸起,既提高了分气盘与炉头的连接可靠性,避免左右晃动,而且减小了分气盘与炉头的接触面积,减少了分气盘向炉头传递的热量,避免热量浪费,将尽可能多的热量用于加热锅底,提高灶具的热效率。(The invention discloses a gas stove which comprises a gas distribution disc and a furnace end, wherein the bottom end surface of the third outer ring side wall of the gas distribution disc is connected with the outer peripheral edge of an annular inclined plane, and the annular inclined plane inclines downwards towards the central axis direction of the gas distribution disc; the inner peripheral edge of the annular inclined surface is abutted against the top end surface of the fourth outer ring side wall of the furnace end; an annular stopping part protruding downwards is arranged on the annular inclined plane around the inner circumferential edge of the annular inclined plane; a plurality of heat insulation bulges which are circumferentially distributed are formed on the inner circumferential surface of the annular stopping part, and the heat insulation bulges are abutted against the outer circumferential surface of the fourth outer ring side wall of the burner. According to the gas stove, by designing the annular stopping part and the heat insulation bulge, the connection reliability of the gas distribution disc and the stove head is improved, the left-right shaking is avoided, the contact area of the gas distribution disc and the stove head is reduced, the heat transferred from the gas distribution disc to the stove head is reduced, the heat waste is avoided, as much heat as possible is used for heating the pot bottom, and the heat efficiency of the stove is improved.)

1. A gas range comprising:

the furnace end comprises a fourth outer ring side wall, a fourth inner ring side wall and a fourth central ring wall, wherein a fourth outer ring channel is defined by the fourth outer ring side wall and the fourth inner ring side wall, and a fourth inner ring channel is defined by the fourth inner ring side wall and the fourth central ring wall;

the gas distribution plate comprises a third outer ring side wall, a third inner ring side wall and a third central ring wall, wherein a third outer ring channel is defined by the third outer ring side wall and the third inner ring side wall, and a third inner ring channel is defined by the third inner ring side wall and the third central ring wall;

the third outer ring channel of the gas distribution disc is communicated with the fourth outer ring channel of the furnace end, and the third inner ring channel of the gas distribution disc is communicated with the fourth inner ring channel of the furnace end; it is characterized in that the preparation method is characterized in that,

the bottom end surface of the third outer ring side wall of the gas distribution disc is connected with the outer peripheral edge of an annular inclined surface, and the annular inclined surface inclines downwards towards the central axis direction of the gas distribution disc; the inner peripheral edge of the annular inclined surface is abutted against the top end surface of the fourth outer annular side wall of the furnace end;

an annular stopping part protruding downwards is arranged on the annular inclined plane around the inner circumferential edge of the annular inclined plane; and a plurality of heat insulation bulges which are circumferentially distributed are formed on the inner peripheral surface of the annular stopping part, and the heat insulation bulges are abutted against the outer peripheral surface of the fourth outer ring side wall of the burner.

2. The gas range of claim 1, wherein a surface of the annular stopper is coated with a thermal insulation coating, and a surface of the thermal insulation protrusion is coated with a thermal insulation coating.

3. The gas range of claim 1, wherein a surface of the annular slope is coated with a thermal insulation coating.

4. The gas stove according to claim 1, wherein the top end surface of the third outer ring side wall, the top end surface of the third inner ring side wall and the top end surface of the third central ring wall of the gas distribution plate are respectively coated with a thermal insulation coating; and the bottom end surface of the third outer ring side wall, the bottom end surface of the third inner ring side wall and the bottom end surface of the third central ring wall of the gas distribution plate are respectively coated with a heat insulation coating.

5. The gas range of claim 1, wherein a top end surface of a fourth outer ring sidewall, a top end surface of a fourth inner ring sidewall, and a top end surface of a fourth center ring wall of the burner are coated with a thermal insulation coating, respectively.

6. Gas burner according to claim 1,

the outer fire cover of the gas stove comprises a second outer ring side wall, a second inner ring side wall and a second annular top wall; the second outer ring side wall, the second inner ring side wall and the second annular top wall enclose a second outer ring cavity;

the inner fire cover of the gas stove comprises a first outer ring side wall, a first central ring wall and a first ring top wall; the first outer ring side wall, the first central ring wall and the first ring top wall enclose a first inner ring cavity;

the inner side of the second inner ring side wall of the outer fire cover is provided with an air distribution grid, and the air distribution grid comprises an outer ring part, an inner ring part and a plurality of grid strips which are concentrically arranged and connect the outer ring part and the inner ring part;

the bottom end surface of the second outer ring side wall of the outer fire cover is abutted against the top end surface of the third outer ring side wall of the gas distribution plate;

the bottom end surface of the outer ring part is abutted against the top end surface of the third inner ring side wall of the air distribution disc;

the bottom end surface of the inner ring part is abutted against the top end surface of the third central annular wall of the air distribution disc;

the top end surface of the outer ring part is abutted against the bottom end surface of the first outer ring side wall of the inner fire cover;

the top end surface of the inner ring part is abutted against the bottom end surface of the first central annular wall of the inner fire cover;

the third outer ring channel of the gas distribution plate is communicated with the second outer ring cavity of the outer fire cover;

and a third inner ring channel of the gas distribution plate is communicated with a first inner ring cavity of the inner fire cover.

7. The gas range of claim 6, wherein a thermal insulation coating is coated on the surface of the gas distribution grid, the bottom end surface of the second outer annular side wall of the outer fire lid is coated with a thermal insulation coating, and the bottom end surfaces of the first outer annular side wall and the first central annular wall of the inner fire lid are respectively coated with a thermal insulation coating.

8. Gas burner according to claim 6,

a plurality of secondary air upper channels are formed on the inner side of the side wall of the second inner ring of the outer fire cover, and are distributed at intervals around the circumference of the first inner ring cavity of the inner fire cover;

a plurality of secondary air lower channels distributed at intervals are arranged around the periphery of the third inner ring channel of the air distribution disc;

the bottom end surfaces of the secondary air upper channels are correspondingly abutted against the top end surfaces of the secondary air lower channels, and the secondary air upper channels are correspondingly communicated with the secondary air lower channels;

and the bottom end surface of the secondary air upper channel and the top end surface of the secondary air lower channel are respectively coated with a heat insulation coating.

9. The gas stove according to any one of claims 1 to 8, wherein the thermal insulation coating is made of silica aerosol, quartz plate, glass fiber or graphene.

10. Gas burner according to claim 9,

if the material of the heat insulation coating is silica aerosol, the thickness of the heat insulation coating is 0.01 mm-0.5 mm;

if the thermal insulation coating is made of quartz plates, glass fibers or graphene, the thickness of the thermal insulation coating is 0.3 mm-2 mm.

Technical Field

The invention relates to the technical field of cookers, in particular to a gas stove.

Background

When the gas stove works, the gas exhausted by the inner fire cover and the gas exhausted by the outer fire cover are combusted to generate a large amount of heat, and the heat is provided for a cooker to heat the cooker.

However, during the operation of the gas stove, a part of the heat generated by the inner and outer fire covers is transferred to the burner, which causes a great amount of heat loss, resulting in low thermal efficiency of the gas stove.

Disclosure of Invention

The invention provides a gas stove, which solves the problem of low heat efficiency of the gas stove in the prior art.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a gas range comprising:

the furnace end comprises a fourth outer ring side wall, a fourth inner ring side wall and a fourth central ring wall, wherein a fourth outer ring channel is defined by the fourth outer ring side wall and the fourth inner ring side wall, and a fourth inner ring channel is defined by the fourth inner ring side wall and the fourth central ring wall;

the gas distribution plate comprises a third outer ring side wall, a third inner ring side wall and a third central ring wall, wherein a third outer ring channel is defined by the third outer ring side wall and the third inner ring side wall, and a third inner ring channel is defined by the third inner ring side wall and the third central ring wall;

the third outer ring channel of the gas distribution disc is communicated with the fourth outer ring channel of the furnace end, and the third inner ring channel of the gas distribution disc is communicated with the fourth inner ring channel of the furnace end;

the bottom end surface of the third outer ring side wall of the gas distribution disc is connected with the outer peripheral edge of an annular inclined surface, and the annular inclined surface inclines downwards towards the central axis direction of the gas distribution disc; the inner peripheral edge of the annular inclined surface is abutted against the top end surface of the fourth outer annular side wall of the furnace end;

an annular stopping part protruding downwards is arranged on the annular inclined plane around the inner circumferential edge of the annular inclined plane; and a plurality of heat insulation bulges which are circumferentially distributed are formed on the inner peripheral surface of the annular stopping part, and the heat insulation bulges are abutted against the outer peripheral surface of the fourth outer ring side wall of the burner.

Further, the surface of the annular stopping portion is coated with a thermal insulation coating, and the surface of the thermal insulation protrusion is coated with a thermal insulation coating.

Still further, the surface of the annular bevel is coated with a thermal barrier coating.

Furthermore, the top end surface of the third outer ring side wall, the top end surface of the third inner ring side wall and the top end surface of the third central ring wall of the gas distribution disc are respectively coated with a heat insulation coating; and the bottom end surface of the third outer ring side wall, the bottom end surface of the third inner ring side wall and the bottom end surface of the third central ring wall of the gas distribution plate are respectively coated with a heat insulation coating.

Still further, the top end surface of the fourth outer ring side wall, the top end surface of the fourth inner ring side wall and the top end surface of the fourth central ring wall of the furnace end are respectively coated with a heat insulation coating.

Further, the outer fire cover of the gas stove comprises a second outer ring side wall, a second inner ring side wall and a second annular top wall; the second outer ring side wall, the second inner ring side wall and the second annular top wall enclose a second outer ring cavity; the inner fire cover of the gas stove comprises a first outer ring side wall, a first central ring wall and a first ring top wall; the first outer ring side wall, the first central ring wall and the first ring top wall enclose a first inner ring cavity; the inner side of the second inner ring side wall of the outer fire cover is provided with an air distribution grid, and the air distribution grid comprises an outer ring part, an inner ring part and a plurality of grid strips which are concentrically arranged and connect the outer ring part and the inner ring part; the bottom end surface of the second outer ring side wall of the outer fire cover is abutted against the top end surface of the third outer ring side wall of the gas distribution plate; the bottom end surface of the outer ring part is abutted against the top end surface of the third inner ring side wall of the air distribution disc; the bottom end surface of the inner ring part is abutted against the top end surface of the third central annular wall of the air distribution disc; the top end surface of the outer ring part is abutted against the bottom end surface of the first outer ring side wall of the inner fire cover; the top end surface of the inner ring part is abutted against the bottom end surface of the first central annular wall of the inner fire cover; the third outer ring channel of the gas distribution plate is communicated with the second outer ring cavity of the outer fire cover; and a third inner ring channel of the gas distribution plate is communicated with a first inner ring cavity of the inner fire cover.

Still further, the surface of the gas distribution grid is coated with a heat insulation coating, the bottom end face of the second outer ring side wall of the outer fire cover is coated with the heat insulation coating, and the bottom end faces of the first outer ring side wall and the first central ring wall of the inner fire cover are respectively coated with the heat insulation coating.

Furthermore, a plurality of secondary air upper channels are formed on the inner side of the side wall of the second inner ring of the outer fire cover, and are distributed at intervals around the circumference of the first inner ring cavity of the inner fire cover; a plurality of secondary air lower channels distributed at intervals are arranged around the periphery of the third inner ring channel of the air distribution disc; the bottom end surfaces of the secondary air upper channels are correspondingly abutted against the top end surfaces of the secondary air lower channels, and the secondary air upper channels are correspondingly communicated with the secondary air lower channels; and the bottom end surface of the secondary air upper channel and the top end surface of the secondary air lower channel are respectively coated with a heat insulation coating.

Still further, the material of thermal barrier coating is silica aerosol, quartz plate, glass fiber or graphite alkene.

Further, if the material of the heat insulation coating is silica aerosol, the thickness of the heat insulation coating is 0.01 mm-0.5 mm; if the thermal insulation coating is made of quartz plates, glass fibers or graphene, the thickness of the thermal insulation coating is 0.3 mm-2 mm.

Compared with the prior art, the invention has the advantages and positive effects that: according to the gas stove, the annular inclined plane is designed on the gas distribution disc, so that the gap between the gas distribution disc and the stove head is increased, a user can easily wipe the liquid containing disc and the position of the liquid containing disc fixing screw, and the cleaning dead angle is reduced; through design annular backstop portion and thermal-insulated arch, both improved the reliability of being connected of gas distribution dish and furnace end, avoided rocking about, reduced the area of contact of gas distribution dish with the furnace end moreover, reduced the heat of gas distribution dish to the furnace end transmission, avoid the heat waste, be used for heating the bottom of a boiler with as much heat as possible, improve the thermal efficiency of cooking utensils.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

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

Fig. 1 is a schematic structural view of an embodiment of a gas range proposed by the present invention;

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

FIG. 3 is a schematic view of the connection of the inner fire cover, the outer fire cover, the gas distribution plate and the burner head in FIG. 1;

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

FIG. 5 is a schematic view of an embodiment of the inner fire cover of FIG. 2;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is a schematic view of another angle of FIG. 5;

FIG. 8 is a cross-sectional view of the outer fire cover of FIG. 2;

FIG. 9 is a schematic view of another angle of FIG. 8;

FIG. 10 is a schematic view of the construction of one embodiment of the fire lid of FIG. 2;

FIG. 11 is a schematic structural view of an embodiment of the air distribution disk of FIG. 2;

FIG. 12 is a cross-sectional view of FIG. 11;

FIG. 13 is a schematic view of another angle of FIG. 12;

fig. 14 is a schematic structural view of an embodiment of the burner of fig. 2.

Reference numerals:

1. an ejector; 1-1, an outer ring shrinkage pipe; 1-2, an inner ring shrinkage pipe;

2. a furnace end; 2-1, outer ring inlet; 2-2, an inner ring inlet; 2-3, a fourth outer ring channel; 2-4, a fourth inner ring channel; 2-5, a hollow lower channel; 2-6, a fourth outer ring sidewall; 2-7, the peripheral surface of the fourth outer ring side wall; 2-8, mounting holes of the liquid containing disc; 2-9, thermocouple fixing holes; 2-10 ignition needle fixing holes; 2-11, a fourth inner ring side wall; 2-12, a fourth central annular wall;

3. a gas distribution plate; 3-1, secondary air lower channel; 3-2, a third inner ring channel; 3-3, a hollow upper channel; 3-4, an air inlet; 3-5, annular inclined plane; 3-6, a third outer ring channel; 3-7, an annular stop; 3-8, heat insulation bulges; 3-9, the top end surface of the secondary air lower channel; 3-10, the top end face of the side wall of the third outer ring; 3-11, disk fixing holes; 3-12, the inner circumference of the annular inclined plane; 3-13, a third outer ring sidewall; 3-14, a third inner ring sidewall; 3-15, a third central annular wall; 3-16, an ignition needle avoidance hole; 3-17, thermocouple avoidance holes;

4. an outer fire cover; 4-1, fire outlet holes; 4-2, an outer flame stabilizing groove; 4-3, secondary air upper channel; 4-4, an inner ring part of the gas distribution grid; 4-5, inclined plane; 4-6, a fire transfer groove; 4-7, an outer ring part of the gas-distributing grid; 4-8, fixing holes under the inner fire cover; 4-9, outer flame stabilizing holes; 4-10, a second outer ring cavity; 4-11, the bottom end face of the secondary air upper channel; 4-12, bottom end face of second outer ring side wall; 4-13, outer fire cover fixing holes; 4-14, fire-transmitting holes; 4-15, a second outer ring sidewall; 4-16, a second inner ring sidewall; 4-17, a second annular top wall; 4-18, grid bars;

5. an inner fire cover; 5-1, inner fire outlet holes; 5-2, an annular inner fire stabilizing groove; 5-3, a top shielding plate; 5-3-1, fixing column; 5-4, annular air gaps; 5-5, an ignition slot; 5-6, ignition holes; 5-7, inner fire stabilizing holes; 5-8, fixing holes are formed in the inner fire cover; 5-9 parts of hollow channel; 5-10, a first outer ring sidewall; 5-11, a first central annular wall; 5-12, a first annular top wall; 5-13, a first inner ring cavity; 5-14, an ignition part;

6. an ignition needle; 7. and a thermocouple.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" in the description of the present invention are used in a generic sense, and can be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected through the inside of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment provides a gas stove, which mainly comprises an ejector 1, a furnace end 2, a gas distribution plate 3, an outer fire cover 4, an inner fire cover 5, an ignition needle 6, a thermocouple 7 and the like, and is shown in fig. 1 to 4.

The ejector 1 mainly comprises an outer ring shrinkage pipe 1-1 and an inner ring shrinkage pipe 1-2, and fuel gas passes through an air door and then ejects a part of primary air to enter the outer ring shrinkage pipe 1-1 and the inner ring shrinkage pipe 1-2 respectively.

The furnace end 2 mainly comprises a fourth outer ring side wall 2-6, a fourth inner ring side wall 2-11, a fourth central ring wall 2-12 and the like, and as shown in fig. 14, the fourth outer ring side wall 2-6 and the fourth inner ring side wall 2-11 enclose a fourth outer ring channel 2-3, and the fourth inner ring side wall 2-11 and the fourth central ring wall 2-12 enclose a fourth inner ring channel 2-4; the fourth central annular wall 2-12 encloses a hollow lower channel 2-5. The fourth outer ring channel 2-3 is provided with an outer ring inlet 2-1, and the outer ring inlet 2-1 is connected with an outer ring shrinkage pipe 1-1 of the ejector 1; the fourth inner ring channel 2-4 is provided with an inner ring inlet 2-2, and the inner ring inlet 2-2 is connected with an inner ring shrinkage pipe 1-2 of the ejector 1. The furnace end 2 is also provided with liquid containing disc mounting holes 2-8 for mounting the liquid containing disc. Thermocouple fixing holes 2-9 and ignition needle fixing holes 2-10 are also arranged on the furnace end 2 and are respectively used for fixing a thermocouple 7 and an ignition needle 6.

The gas distributor 3 mainly includes a third outer ring side wall 3-13, a third inner ring side wall 3-14, a third central ring wall 3-15, and the like, as shown in fig. 11 to 13, the third outer ring side wall 3-13 and the third inner ring side wall 3-14 enclose a third outer ring channel 3-6, the third inner ring side wall 3-14 and the third central ring wall 3-15 enclose a third inner ring channel 3-2, and the third central ring wall 3-15 encloses a hollow upper channel 3-3. After the gas distribution disc 3 is arranged on the furnace end 2, the third outer ring channel 3-6, the third inner ring channel 3-2 and the hollow upper channel 3-3 of the gas distribution disc 3 are correspondingly communicated with the fourth outer ring channel 2-3, the fourth inner ring channel 2-4 and the hollow lower channel 2-5 of the furnace end 2. Ignition needle avoiding holes 3-16 and thermocouple avoiding holes 3-17 are further formed in the gas distribution plate 3 and are used for avoiding the ignition needle 6 and the thermocouple 7 respectively, and the ignition needle 6 and the thermocouple 7 can be conveniently arranged in a penetrating mode. The gas distribution plate 3 is also provided with plate fixing holes 3-11 for fixing the outer fire cover 4.

The bottom end face of a third outer ring side wall 3-13 of the gas distribution disc 3 is connected with the outer peripheral edge of an annular inclined plane 3-5, and the annular inclined plane 3-5 inclines downwards towards the central axis direction of the gas distribution disc; when the air distribution disc 3 is arranged on the burner 2, the inner peripheral edge 3-12 of the annular inclined surface 3-5 is abutted and jointed with the top end surface of the fourth outer annular side wall 2-6 of the burner 2, the bottom end surface of the third inner annular side wall 3-14 of the air distribution disc 3 is abutted and jointed with the top end surface of the fourth inner annular side wall 2-11 of the burner 2, and the bottom end surface of the third central annular wall 3-15 of the air distribution disc 3 is abutted and jointed with the top end surface of the fourth central annular wall 2-12 of the burner 2, so that the sealing of the air distribution disc 3 and the burner 2 is ensured. That is, the outer peripheral edge of the annular inclined surface 3-5 is connected to the bottom end surface of the third outer annular sidewall 3-13, and the inner peripheral edge 3-12 of the annular inclined surface 3-5 is abutted to the top end surface of the fourth outer annular sidewall 2-6 of the burner 2. The design of the annular inclined plane 3-5 increases the gap between the gas distribution disc 3 and the furnace end 2, so that a user can easily clean the liquid containing disc and the position of the liquid containing disc fixing screw, and the cleaning dead angle is reduced. In the embodiment, in order to facilitate the butt assembly of the air distribution plate 3 and the burner 2, the top end surface of the fourth outer annular side wall 2-6, the top end surface of the fourth inner annular side wall 2-11 and the top end surface of the fourth central annular wall 2-12 of the burner 2 are on the same horizontal plane, and the inner circumferential edge 3-12 of the annular inclined surface 3-5 of the air distribution plate 3, the bottom end surface of the third inner annular side wall 3-14 and the bottom end surface of the third central annular wall 3-15 are on the same horizontal plane.

In order to improve the butt joint reliability of the gas distribution disc 3 and the furnace end 2 and avoid left and right shaking, annular stopping parts 3-7 protruding downwards are arranged on the annular inclined planes 3-5 of the gas distribution disc 3 around the inner peripheral edges 3-12 of the annular inclined planes; a plurality of heat insulation bulges 3-8 which are circumferentially arranged are formed on the inner circumferential surface of the annular stopping part 3-7, and each heat insulation bulge 3-8 is abutted with the outer circumferential surface 2-7 of the fourth outer ring side wall 2-6 of the burner 2. That is, when the gas distribution plate 3 is mounted on the burner 2, the inner peripheral edge 3-12 of the annular inclined surface 3-5 abuts against the top end surface of the fourth outer annular side wall 2-6 of the burner 2, and the plurality of heat insulation protrusions 3-8 on the inner peripheral surface of the annular stopping portion 3-7 abut against the outer peripheral surface 2-7 of the fourth outer annular side wall 2-6 of the burner 2. Because the annular stopping part 3-7 is not directly contacted with the peripheral surface 2-7 of the fourth outer ring side wall 2-6 of the burner 2, but is contacted with the peripheral surface 2-7 of the fourth outer ring side wall 2-6 through the heat insulation bulge 3-8, and the contact of the heat insulation bulge 3-8 and the peripheral surface 2-7 of the fourth outer ring side wall 2-6 is approximate to point contact, the contact area of the gas distribution plate 3 and the burner 2 is reduced, and the heat transferred from the gas distribution plate 3 to the burner 2 is reduced.

Therefore, in the gas stove of the embodiment, the annular inclined plane 3-5 is designed on the gas distribution disc 3, so that the gap between the gas distribution disc 3 and the stove head 2 is increased, a user can easily wipe the liquid containing disc and the position of the liquid containing disc fixing screw, and the dead angle of cleaning is reduced; by designing the annular stopping portions 3-7 and the heat insulation protrusions 3-8, the connection reliability of the gas distribution disc 3 and the furnace end 2 is improved, left-right shaking is avoided, the contact area of the gas distribution disc 3 and the furnace end 2 is reduced, heat transferred from the gas distribution disc 3 to the furnace end 2 is reduced, heat waste is avoided, as much heat as possible is used for heating the bottom of a pot, and the heat efficiency of a cooker is improved.

A certain distance is reserved between the inner peripheral edge 3-12 of the annular inclined surface 3-5 of the gas distribution plate 3 and the third outer ring side wall 3-13 to form a gas inlet 3-4, and the gas inlet 3-4 is communicated with the third outer ring channel 3-6. The mixed gas in the fourth outer ring channel 2-3 of the furnace end 2 enters the third outer ring channel 3-6 through the gas inlet 3-4.

The surface of the annular back stop 3-7 is coated with a thermal barrier coating to reduce the amount of heat transferred from the annular bevel 3-5 to the annular back stop 3-7 and also to reduce the amount of heat transferred from the annular back stop 3-7 to the thermal barrier protrusion 3-8 and to the outside.

The surface of the heat insulation protrusion 3-8 is coated with a heat insulation coating to reduce the amount of heat transferred from the annular stopper 3-7 to the heat insulation protrusion 3-8 and the amount of heat transferred from the heat insulation protrusion 3-8 to the fourth outer annular sidewall 2-6 of the burner 2.

The surface of the annular chamfer 3-5 is coated with a thermal barrier coating that reduces the amount of heat transferred from the third outer annular sidewall 3-13 to the annular chamfer 3-5 and the amount of heat transferred from the annular chamfer 3-5 to the annular stop 3-7.

The top end surfaces of the third outer ring side walls 3-13, the third inner ring side walls 3-14 and the third central ring walls 3-15 of the gas distribution plate 3 are respectively coated with heat insulation coatings so as to reduce the heat transferred to the gas distribution plate 3 by the outer fire covers 4 and the inner fire covers 5. The bottom end surfaces of the third outer annular side walls 3-13, the third inner annular side walls 3-14 and the third central annular walls 3-15 of the gas distribution plate 3 are respectively coated with a heat insulation coating so as to reduce the heat transferred from the gas distribution plate 3 to the burner 2.

The top end surfaces of the fourth outer annular side wall 2-6, the fourth inner annular side wall 2-11 and the fourth central annular wall 2-12 of the burner 2 are respectively coated with a heat insulation coating so as to reduce the heat transferred from the air distribution plate 3 to the burner 2.

In this embodiment, the thermal insulation coating is made of silica aerosol, quartz plate, glass fiber, graphene, or the like, and has low thermal conductivity, stable performance, and low cost.

In this embodiment, the thermal barrier coating is different in material and thickness. If the material of the heat insulation coating is silica aerosol, the thickness of the heat insulation coating is 0.01 mm-0.5 mm. If the material of the heat insulation coating is quartz plate, glass fiber or graphene, the thickness of the heat insulation coating is 0.3 mm-2 mm. If the thickness of the heat insulation coating is too small, an effective heat insulation effect cannot be achieved; if the thickness is too large, not only waste, but also influence the intensity of gas-cooker. Therefore, the thickness range of the heat insulation coating is selected, so that a good heat insulation effect can be ensured, and the over-high cost can be avoided.

The outer fire lid 4 mainly includes a second outer ring side wall 4-15, a second inner ring side wall 4-16, a second annular top wall 4-17, etc., as shown in fig. 8 to 10; the second outer ring side wall 4-15, the second inner ring side wall 4-16 and the second ring top wall 4-17 enclose a second outer ring cavity 4-10. The peripheral surface of the second outer ring side wall 4-15 is provided with an annular inclined surface 4-5 which is inclined downwards towards the central axis direction of the outer fire cover, a plurality of outgoing fire holes 4-1 which are distributed at intervals are formed on the inclined surface 4-5 along the circumferential direction, the outgoing fire holes 4-1 are communicated with the second outer ring cavity 4-10, and the mixed gas in the second outer ring cavity 4-10 is transmitted to the outgoing fire holes 4-1. The shape of the inclined plane 4-5 can prevent liquid such as soup and the like overflowing from the cooker from entering the outgoing fire hole 4-1. Fire transfer holes 4-14 are formed in the side wall 4-16 of the second inner ring, and the fire transfer holes 4-14 are communicated with the cavity 4-10 of the second outer ring; the second annular top wall 4-17 inclines towards the central axis direction of the outer fire cover, a fire transfer groove 4-6 is formed on the second annular top wall 4-17, one end of the fire transfer groove 4-6 extends to the position, close to the fire transfer hole 4-14, on the second inner annular side wall 4-16, and the other end of the fire transfer groove 4-6 extends to the position, close to the outer fire hole 4-1, on the second outer annular side wall 4-15. The fire transfer groove 4-6 is communicated with the second outer ring cavity 4-10. The ignition needle 6 is ignited to ignite the fuel gas at the position of the fire transfer hole 4-14, then the flame at the position of the fire transfer hole 4-14 ignites the fuel gas at the position of the fire transfer groove 4-6, and finally the flame at the position of the fire transfer groove 4-6 ignites the fuel gas at the position of the fire outlet hole 4-1. The fire transfer groove 4-6 is used for transferring the burning of the flame at the position of the fire transfer hole 4-14 to the outgoing fire hole 4-1 and igniting the fuel gas discharged from the outgoing fire hole 4-1.

An annular outer flame stabilizing groove 4-2 is formed in the second outer ring side wall 4-15 of the outer flame cover 4 along the circumferential direction below the outer flame outlet 4-1, a plurality of outer flame stabilizing holes 4-9 which are distributed circumferentially at equal intervals are formed in the second outer ring side wall 4-15, and the outer flame stabilizing groove 4-2 is communicated with a second outer ring cavity 4-10 through the outer flame stabilizing holes 4-9. The mixed gas in the second outer ring cavity 4-10 is transmitted to the annular outer fire stabilizing groove 4-2 through the outer fire stabilizing hole 4-9, and the combustion of the mixed gas in the annular outer fire stabilizing groove 4-2 is used for ensuring the stability of the combustion of the gas in the outer fire stabilizing hole 4-1 and preventing flame leaving.

The inner side of the second inner ring side wall 4-16 of the outer fire cover 4 is provided with an air distribution grid, and the air distribution grid comprises an outer ring part 4-7, an inner ring part 4-4 and a plurality of grid strips 4-18 which are concentrically arranged and are connected with the outer ring part 4-7 and the inner ring part 4-4; a certain distance is reserved between the outer ring part 4-7 and the inner ring part 4-4, and the space between the outer ring part 4-7 and the inner ring part 4-4 is divided into a plurality of air inlet holes which are circumferentially arranged at equal intervals by a plurality of grid strips 4-18 so as to communicate the third inner ring channel 3-2 of the air distribution plate 3 with the first inner ring cavity 5-13 of the inner fire cover 5.

The inner fire cover 5 mainly comprises a first outer annular side wall 5-10, a first central annular wall 5-11, a first annular top wall 5-12 and the like, as shown in fig. 5 to 7; a first inner ring cavity 5-13 is defined by the first outer ring side wall 5-10, the first central ring wall 5-11 and the first ring top wall 5-12; the first central annular wall 5-11 encloses a hollow channel 5-9. A plurality of inner fire outlets 5-1 are formed in the circumferential direction on the first outer ring side wall 5-10, the inner fire outlets 5-1 are communicated with the first inner ring cavity 5-13, and the mixed gas in the first inner ring cavity 5-13 is transmitted to the inner fire outlets 5-1.

When the outer fire cover 4 and the inner fire cover 5 are assembled on the gas distribution plate 3, the bottom end surface 4-12 of the second outer ring side wall 4-15 of the outer fire cover 4 is abutted and attached to the top end surface 3-10 of the third outer ring side wall 3-13 of the gas distribution plate 3; the bottom end surface of the outer ring part 4-7 is abutted and jointed with the top end surface of the third inner ring side wall 3-14 of the air distribution disc 3; the bottom end surface of the inner ring part 4-4 is abutted and jointed with the top end surface of a third central annular wall 3-15 of the gas distribution disc 3; the top end surface of the outer ring part 4-7 is abutted and jointed with the bottom end surface of the first outer ring side wall 5-10 of the inner fire cover 5; the top end surface of the inner ring part 4-4 is abutted and jointed with the bottom end surface of the first central annular wall 5-11 of the inner fire cover 5.

A third outer ring channel 3-6 of the gas distribution plate 3 is communicated with a second outer ring cavity 4-10 of the outer fire cover 4; the third inner ring channel 3-2 of the gas distribution plate 3 is communicated with the first inner ring cavity 5-13 of the inner fire cover 5 through a gas distribution grid; the hollow upper channel 3-3 of the gas distribution plate 3 is communicated with the hollow channel 5-9 of the inner fire cover 5. By designing the gas distribution grid, the mixed gas in the third inner ring channel 3-2 of the gas distribution plate 3 is more uniformly distributed in the circumferential direction, so that the uniformity of the mixed gas entering the first inner ring cavity 5-13 of the inner fire cover 5 is improved.

The gas distribution plate 3 is provided with plate fixing holes 3-11, the outer fire cover 4 is provided with outer fire cover fixing holes 4-13, the plate fixing holes 3-11 are aligned with the outer fire cover fixing holes 4-13, and screws are screwed into the plate fixing holes 3-11 and the outer fire cover fixing holes 4-13, so that the outer fire cover 4 and the gas distribution plate 3 are stably connected together, and the outer fire cover 4 and the gas distribution plate 3 are ensured to be tightly combined. The inner fire cover 5 is provided with inner fire cover upper fixing holes 5-8, the outer fire cover 4 is provided with inner fire cover lower fixing holes 4-8, and a screw is screwed into the inner fire cover lower fixing holes 4-8 and the inner fire cover upper fixing holes 5-8, so that the inner fire cover 5 and the outer fire cover 4 are stably connected together, and the inner fire cover 5 and the outer fire cover 4 are ensured to be attached.

The surface of the gas distribution grid is coated with a heat insulation coating so as to reduce the heat transferred from the outer fire cover 4 and the inner fire cover 5 to the gas distribution plate 3, avoid heat waste, use as much heat as possible for heating the bottom of a boiler and improve the heat efficiency of the cooker. The bottom end surfaces 4-12 of the second outer ring side walls 4-15 and the bottom end surfaces of the second inner ring side walls 4-16 of the outer fire covers 4 are respectively coated with thermal insulation coatings so as to reduce the heat transferred from the outer fire covers 4 to the air distribution plate 3 and the air distribution grids. The bottom end face of the first outer ring side wall 5-10 and the bottom end face of the first central ring wall 5-11 of the inner fire cover 5 are respectively coated with a heat insulation coating, so that the heat transferred from the inner fire cover 5 to the gas distribution disc 3 and the gas distribution grid is reduced, the heat waste is avoided, as much heat as possible is used for heating the pot bottom, and the heat efficiency of the cooker is improved.

A plurality of secondary air upper channels 4-3 are formed on the inner side of the second inner ring side wall 4-16 of the outer fire cover 4, and the plurality of secondary air upper channels 4-3 are circumferentially distributed at intervals around the first inner ring cavity 5-13 of the inner fire cover 5; a plurality of secondary air lower channels 3-1 are arranged at intervals around the periphery of the third inner ring channel 3-2 of the air distribution plate 3. The bottom end surfaces of the secondary air upper channels 4-3 are correspondingly abutted against the top end surfaces of the secondary air lower channels 3-1, and the secondary air upper channels 4-3 are correspondingly communicated with the secondary air lower channels 3-1. The bottom inlet of the secondary air lower channel 3-1 is communicated with the outside, the top outlet of the secondary air lower channel 3-1 is communicated with the bottom inlet of the corresponding secondary air upper channel 4-3, the top outlet of the secondary air upper channel 4-3 is communicated with the outside, and the secondary air lower channel 3-1 and the secondary air upper channel 4-3 provide required secondary air for the combustion of gas exhausted by the inner fire cover 5, so that the combustion efficiency is improved.

The bottom end face 4-11 of the secondary air upper channel 4-3 of the outer fire cover 4 and the top end face 3-9 of the secondary air lower channel 3-1 of the air distribution disc 3 are respectively coated with a heat insulation coating, so that the heat transferred from the outer fire cover 4 to the air distribution disc 3 is reduced, the heat waste is avoided, as much heat as possible is used for heating the bottom of the cooker, and the heat efficiency of the cooker is improved.

In the embodiment, the secondary air lower channel 3-1 vertically penetrates through the annular inclined plane 3-5, and due to the inclined plane design of the annular inclined plane 3-5, the sectional area of the inlet at the bottom end of the secondary air lower channel 3-1 is increased, the secondary air is fully supplemented, and the air resistance is reduced.

In the embodiment, ignition holes 5-6 are formed on the first outer ring side wall 5-10 of the inner fire cover 5, and the ignition holes 5-6 are communicated with the first inner ring cavity 5-13; fire transfer holes 4-14 are formed in the second inner ring side wall 4-16 of the outer fire cover 4, and the fire transfer holes 4-14 are communicated with the second outer ring cavity 4-10; the distance between the fire transfer holes 4-14 of the outer fire cover 4 and the ignition holes 5-6 of the inner fire cover 5 is less than or equal to a set distance d, wherein d is more than 0.

In the gas stove of the embodiment, by designing that the distance between the fire transfer holes 4-14 and the ignition holes 5-6 is smaller than or equal to the set distance, namely, the distance between the fire transfer holes 4-14 and the ignition holes 5-6 is relatively short, when a user adjusts the fire of the gas stove, when the gas discharged from the inner fire cover 5 is combusted and adjusted to the process that the gas discharged from the inner fire cover and the gas discharged from the outer fire cover are combusted, the load of the outer fire cover 4 can be small, the gas discharged from the fire transfer holes 4-14 can be ignited by the flame at the ignition holes 5-6 of the inner fire cover 5, and further the gas at the outer fire hole 4-1 of the outer fire cover 4 is ignited, at the moment, the load of the outer fire cover 4 can be small, so as to meet the requirements of the user for inner ring big fire and outer ring small fire, and solve the problems that the inner ring big fire (the flame of the inner fire cover) and the outer ring small fire (the small flame of the outer fire cover) can not be adjusted in the prior art, the cooking experience of the user is improved.

In the embodiment, the distance d is set to be 5mm, that is, the distance between the fire transfer holes 4-14 of the outer fire cover 4 and the ignition holes 5-6 of the inner fire cover 5 is less than or equal to 5mm, so that the gas stove is prevented from being difficult to design due to too small distance, and the outer fire cover 4 is prevented from being overloaded due to too large distance.

The distance between the ignition holes 5-6 and the ignition needle 6 is equal to the distance between the fire transfer holes 4-14 and the ignition needle 6, so that when the ignition needle 6 is ignited and discharged, the gas of the inner fire cover 5 and the gas of the outer fire cover 4 can be ignited at the same time, the time delay of the fire transfer from the inner fire cover to the outer fire cover is avoided, the zero error of the ignition of the outer fire cover is ensured, and the problems that the fire transfer is slow, the fire transfer is poor, the outer fire cover is not combusted, the gas of the outer fire cover is leaked and the like caused by the fact that the ignition needle ignites the inner fire cover firstly and then ignites the outer fire cover by the inner fire cover in the prior art are solved.

In order to facilitate the structural design of the gas stove and ignite the gas of the inner fire cover 5 and the outer fire cover 4 at the same time, an ignition part 5-14 protruding towards the direction of a fire transfer hole 4-14 of the outer fire cover 4 is formed below an inner fire outlet hole 5-1 on a first outer ring side wall 5-10 of the inner fire cover 5, the ignition part 5-14 is provided with the ignition hole 5-6, the ignition hole 5-6 penetrates through the ignition part 5-14, one end of the ignition hole 5-6 is communicated with a first inner ring cavity 5-13, and the other end of the ignition hole 5-6 faces the ignition hole 5-6 and is communicated with the outside.

An ignition groove 5-5 is also formed on the ignition part 5-14, and the ignition groove 5-5 divides the ignition hole 5-6 into an upper part and a lower part; the notch of the ignition groove 5-5 faces the fire transfer hole 4-14 of the outer fire cover 4, and the notch of the ignition groove 5-5 is communicated with the outside; the bottom of the ignition groove 5-5 is communicated with the first inner ring cavity 5-13. By designing the ignition groove 5-5, the gas quantity transmitted from the first inner ring cavity 5-13 to the ignition hole 5-6 is increased, so that the ignition needle 6 can smoothly ignite the gas at the ignition hole 5-6, and further the gas at the inner fire outlet 5-1 is ignited. Meanwhile, the flame at the ignition hole 5-6 of the inner fire cover 5 can smoothly ignite the gas discharged from the fire transfer hole 4-14 of the outer fire cover 4 in the fire adjusting process, and further smoothly ignite the gas at the outer fire hole 4-1 of the outer fire cover 4.

A plurality of horizontally arranged ignition holes 5-6 are formed on the ignition part 5-14, so that the gas quantity transmitted from the first inner ring cavity 5-13 to the ignition holes 5-6 is further increased, and the ignition needle 6 is further ensured to smoothly ignite the gas at the ignition holes 5-6.

A hollow channel 5-9 is enclosed by a first central annular wall 5-11 of the inner fire cover 5, a top shielding plate 5-3 is arranged above the hollow channel 5-9, and the top shielding plate 5-3 is positioned above a first annular top wall 5-12; an annular air gap 5-4 is formed between the top shielding plate 5-3 and the first annular top wall 5-12, and the annular air gap 5-4 is communicated with the hollow channel 5-9. The hollow channel 5-9 of the inner fire cover 5 is communicated with the hollow upper channel 3-3 of the air distribution disc 3, and the air coming from the bottom of the burner 2 is transmitted to the hollow channel 5-9 of the inner fire cover 5 through the hollow lower channel 2-5 of the burner 2 and the hollow upper channel 3-3 of the air distribution disc 3 and then flows out from the inner annular air gap 5-4 to supplement secondary air required by flame combustion of the inner fire cover 5.

The inner fire cover 5 of the embodiment prevents soup, food residues and the like from entering the hollow channel 5-9 by designing the top shielding plate 5-3; moreover, an annular air gap 5-4 is formed between the top shielding plate 5-3 and the first annular top wall 5-12, and secondary air required for flame combustion of the inner fire cover 5 can be supplemented. Therefore, the inner fire cover 5 of the embodiment solves the problems that liquid is easy to splash into the inner fire cover and the hollow channel and secondary air is not supplemented sufficiently through the design of the top shielding plate 5-3 and the annular air gap 5-4.

If the top shield 5-3 is too small, the first outer ring side wall 5-10 cannot be shielded; if the top shielding plate 5-3 is too large, the heating of the cookware by the combustion flame of the inner fire cover 5 is easily affected, therefore, in the embodiment, the central axis of the first outer ring side wall 5-10 of the inner fire cover 5 passes through the center of the top shielding plate 5-3, and the diameter of the top shielding plate 5-3 is equal to the outer diameter of the first outer ring side wall 5-10. Namely, the projection of the top shielding plate 5-3 on the inner fire cover 5 just completely covers the first outer ring side wall 5-10, and of course, the first annular top wall 5-12, the first central ring wall 5-11 and the hollow channel 5-9 are also completely covered, so that not only is soup, food residues and the like prevented from dropping on the inner fire cover 5, but also the heating of the cooker by the inner fire cover 5 is prevented from being influenced.

A plurality of fixed columns 5-3-1 distributed at intervals are formed on the inner circumferential surface of the first central annular wall 5-11, and the fixed columns 5-3-1 are fixed with the bottom end surface of the top shielding plate 5-3. That is, one end of the fixing column 5-3-1 is fixed to the inner peripheral surface of the first central annular wall 5-11, and the other end thereof extends upward to be fixed to the bottom end surface of the top shielding plate 5-3, so as to support and fix the top shielding plate 5-3. By designing the plurality of fixing columns 5-3-1 on the inner circumferential surface of the first central annular wall 5-11, the top shielding plate 5-3 is stably and reliably connected with the inner fire cover 5, and flame combustion of the inner fire cover 5 is prevented from being influenced. In the embodiment, a plurality of fixing columns 5-3-1 are arranged on the inner circumferential surface of the first central annular wall 5-11 at equal intervals, so that the connection stability of the top shielding plate 5-3 and the inner fire cover 5 is improved.

The top shield 5-3 is detachably connected to the first central circumferential wall 5-11. When the top shielding plate 5-3 is not needed, the top shielding plate 5-3 can be detached; when the top shielding plate 5-3 is needed, the top shielding plate 5-3 is installed on the inner fire cover 5, and the fire extinguishing device is convenient and flexible to use and convenient to disassemble and assemble.

When the top shielding plate 5-3 is detached, a temperature sensing device is arranged in the hollow channel 5-9 of the inner fire cover 5, the temperature sensing device collects temperature signals and sends the collected temperature signals to a main control board of the gas stove, and the main control board controls the operation of a gas valve or an alarm according to the received temperature signals to prevent dry burning. If the temperature signal exceeds the temperature threshold value, the dry combustion condition is possible to happen, the main control board controls the gas valve to be closed, the gas supply is cut off, the main control board controls the alarm to operate, and the alarm prompts a user to improve the use safety. Therefore, the gas stove of the embodiment can be used as a product with/without an anti-dry burning function only by detaching the top shielding plate 5-3 and arranging the temperature sensing device.

An annular inner fire stabilizing groove 5-2 is formed in the position of an inner fire outlet 5-1 on the first outer ring side wall 5-10 of the inner fire cover 5 along the circumferential direction, a plurality of inner fire stabilizing holes 5-7 which are distributed circumferentially at equal intervals are formed in the first outer ring side wall 5-10, and the annular inner fire stabilizing groove 5-2 is communicated with the first inner ring cavity 5-13 through the inner fire stabilizing holes 5-7. The mixed gas in the first inner ring cavity 5-13 is transmitted to the annular inner fire stabilizing groove 5-2 through the inner fire stabilizing hole 5-7, and the combustion of the mixed gas in the annular inner fire stabilizing groove 5-2 is used for ensuring the combustion stability of the gas in the inner fire outlet 5-1 and preventing flame separation.

In order to enable the mixed gas in the first inner ring cavity 5-13 to flow more flexibly, the inner fire outlet holes 5-1 of the inner fire cover 5 incline downwards towards the central axis direction of the inner fire cover, the annular inner fire stabilizing grooves 5-2 are horizontally arranged, and the inner fire stabilizing holes 5-7 are vertically arranged. One part of the mixed gas in the first inner ring cavity 5-13 is directly sprayed out through the inner fire outlet 5-1, and the other part of the mixed gas is transmitted to the annular inner fire stabilizing groove 5-2 through the inner fire stabilizing hole 5-7 and then is sprayed out through the annular inner fire stabilizing groove 5-2.

Outer ring gas flow path: the gas valve is opened, after the gas passes through the air door, a part of primary air is injected to enter the outer ring shrinkage pipe 1-1 of the injector 1, then enters the fourth outer ring channel 2-3 through the outer ring inlet 2-1 of the burner 2, then enters the third outer ring channel 3-6 of the gas distribution disc 3, finally enters the second outer ring cavity 4-10 of the outer fire cover 4, and is discharged through the outer fire outlet 4-1, the outer flame stabilizing hole 4-9 and the outer flame stabilizing groove 4-2 to be combusted.

Inner ring gas circulation path: the gas valve is opened, after gas passes through the air door, a part of primary air is injected to enter the inner ring shrinkage pipe 1-2 of the injector 1, then enters the fourth inner ring channel 2-4 through the inner ring inlet 2-2 of the burner 2, then enters the third inner ring channel 3-2 of the gas distribution disc 3, finally enters the first inner ring cavity 5-13 of the inner fire cover 5 through the gas distribution grid, and is discharged through the inner fire outlet 5-1, the inner fire stabilizing hole 5-7 and the annular inner fire stabilizing groove 5-2 to be combusted.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.