CN216281396U - Outer distributor and inner and outer fire assembly with same - Google Patents

Abstract

The utility model provides an outer fire distributor and an inner and outer fire assembly with the outer fire distributor, which comprise an outer fire ring provided with an outer injection pipe hole, an outer fire cover seat arranged on the outer fire ring and an outer fire cover arranged on the outer fire cover seat, wherein the outer fire cover is formed by sequentially connecting and enclosing an annular top surface, an inclined annular outer B surface, an annular air inlet surface and an inclined annular outer surface, the outer B surface is inclined from the inner upper part to the outer lower part, the outer surface is inclined from the outer upper part to the inner lower part, a plurality of outer fire grooves penetrating through the upper and lower edges of the outer surface are uniformly arranged on the outer surface, and a plurality of outer fire B grooves penetrating through the upper and lower edges of the outer B surface are uniformly arranged on the outer B surface. The utility model reduces the material cost and the processing cost of the fire distributor and improves the combustion efficiency; the inner and outer fire assemblies respectively form one or two groups of flame rings on the outer fire distributor and the inner fire distributor during combustion, so that a cookware arranged on the inner and outer fire assemblies is heated more uniformly, and the heating efficiency is improved.

Description

Outer distributor and inner and outer fire assembly with same

Technical Field

The utility model relates to a kitchen ware, in particular to an outer fire distributor and an inner and outer fire assembly with the outer fire distributor.

Background

The fire divider is an important structural component of the gas cooker, and the quality of the performance of the fire divider directly determines the quality of the gas cooker. The fire divider in the prior art is generally formed by casting and forging copper, has high cost, large difficulty in processing fire holes, rough hole walls and low combustion efficiency, and influences the performance and quality of a gas cooker.

The inner fire assembly and the outer fire assembly in the prior art usually form a group of flame rings on the outer fire cover and the inner fire cover respectively during combustion, so that a pot arranged on the outer fire cover is heated unevenly, and the heating efficiency is not high enough.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides the outer fire distributor and the inner and outer fire assembly with the outer fire distributor, so that the material cost and the processing cost of the fire distributor are reduced, and the combustion efficiency is improved; when the inner and outer fire assemblies are burnt, one or two groups of flame rings are respectively formed on the outer fire cover and the inner fire cover, so that a cookware arranged on the outer fire cover is heated more uniformly, and the heating efficiency is improved.

The technical scheme for solving the technical problem is as follows: the utility model provides an outer distributor, is including being equipped with outer fire circle of drawing the pipe hole outward, arranging in outer fire lid seat on the outer fire circle with arrange in outer fire lid on the outer fire lid seat, outer fire lid is connected gradually and encloses by annular top surface, the outer B face of oblique annular, annular face of admitting air and the outside of oblique annular, outer B face is from inside upper (this application upper and lower, preceding, back, interior, outside equidirectional direction that indicates after the product has been installed) to outside below slope, outside is from outside top inside below slope, the outside is equipped with a plurality of and runs through the outer fire groove of lower edge on the outside evenly, outer B face is equipped with a plurality of and runs through outer fire B groove of lower edge on the outer B face evenly.

The outer fire cover seat at least comprises an annular air inlet ring, an inner inclined plane which is integrally connected with the inner edge of the air inlet ring, an outer inclined plane which is integrally connected with the outer edge of the air inlet ring, an outer seat inner wall which is integrally connected with the inner edge of the inner inclined plane, and an outer seat outer wall which is integrally connected with the outer edge of the outer inclined plane, wherein the inner inclined plane is inclined from the upper inside to the lower outside, the outer inclined plane is inclined from the upper outside to the lower inside, and the air inlet ring is uniformly provided with a plurality of air inlets.

When the outer fire cover is arranged on the outer fire cover seat, the outer surface B is tightly attached to the inner inclined surface, and the outer surface B is tightly attached to the outer inclined surface. And a proper gap is formed between the lower edge of the air inlet surface and the air inlet ring, at the moment, a plurality of air outlet holes are formed between the top surface and the outer upper edge of the outer inclined surface, and a plurality of inner air outlet holes are formed between the top surface and the inner upper edge of the inner inclined surface.

Furthermore, the air inlet surface is provided with an annular groove which is concave upwards, the outer fire ring is provided with an outer annular groove and an inner annular groove, when the outer fire cover seat is arranged on the outer fire ring, the lower end of the outer wall of the outer seat falls into the outer annular groove, and the lower end of the inner wall of the outer seat falls into the inner annular groove.

The technical scheme for solving the technical problem further comprises the following steps: the utility model provides an interior external fire assembly, including interior firearm with an outer firer, interior firearm including be equipped with in draw the interior fire circle of tub hole, arrange in interior fire lid seat on the interior fire circle and arrange in interior fire lid on the lid seat, interior fire lid is connected gradually and encloses by annular top B face, the interior B face of oblique annular, annular B face that admits air and the inner face of oblique annular, interior B face inclines from inside to outside below, the inner face inclines from outside top to inside below. The inner surface is provided with a plurality of inner fire grooves which penetrate through the upper edge and the lower edge of the inner surface. The inner surface B is provided with a plurality of inner fire grooves B which penetrate through the upper edge and the lower edge of the inner surface B.

Interior fire lid seat at least include annular B circle that admits air, with the interior oblique B face of the same body coupling of inner edge of B circle that admits air, with the outer oblique B face of the same body coupling of outer fringe of B circle that admits air, with interior seat inner wall of the same body coupling of interior reason in the interior oblique B face, with interior seat outer wall of the same body coupling of outer reason on the outer surface of oblique B face, interior oblique B face is by the outside below slope in interior top, the slope of the interior below in the outside top of outer oblique B face, it is equipped with a plurality of B hole that admits air uniformly to admit air the B circle, works as interior fire lid is arranged in when on the interior fire lid seat, the inner face with the interior oblique B face is hugged closely, interior B face with interior oblique B face is hugged closely. And a proper gap is formed between the lower edge of the air inlet B surface and the air inlet B ring, a plurality of outer air outlet B holes are formed between the top B surface and the outer upper edge of the outer inclined B surface, and a plurality of inner air outlet B holes are formed between the top B surface and the inner upper edge of the inner inclined B surface.

Further, the B face of admitting air is equipped with the annular channel to the indent, interior fire circle is equipped with outer loop B groove and inner ring B groove and interior side opening, interior fire cover seat is arranged in when interior fire circles, the lower extreme of inner seat outer wall falls into outer loop B groove, the lower extreme of inner seat inner wall falls into inner ring B groove.

The technical scheme for solving the technical problem further comprises the following steps: the utility model provides an inside and outside fire assembly, including interior firearm with an outer firer, interior firearm including be equipped with draw the interior fire circle of tub hole and inboard hole, arrange in interior fire lid seat on the interior fire circle and arrange in interior fire lid on the lid seat of fire, interior fire lid is connected gradually and encloses by annular top B face, the annular interior B face of inclining, annular B face that admits air and the annular inner face that inclines to one side, interior B face inclines from inside top outside below, the inner face inclines from outside top inside below. The inner surface is provided with a plurality of inner fire grooves which penetrate through the upper edge and the lower edge of the inner surface.

Interior fire lid seat at least include annular B circle that admits air, with the interior oblique B face of the same body coupling of inner edge of B circle that admits air, with the outer oblique B face of the same body coupling of outer fringe of B circle that admits air, with interior seat inner wall of the same body coupling of interior reason in the interior oblique B face, with interior seat outer wall of the same body coupling of outer reason on the outer surface of oblique B face, interior oblique B face is by the outside below slope in interior top, the slope of the interior below in the outside top of outer oblique B face, it is equipped with a plurality of B hole that admits air uniformly to admit air the B circle, works as interior fire lid is arranged in when on the interior fire lid seat, the inner face with the interior oblique B face is hugged closely, interior B face with interior oblique B face is hugged closely. And a proper gap is formed between the lower edge of the air inlet B surface and the air inlet B ring, and at the moment, a plurality of outer air outlet B holes are formed between the top B surface and the outer upper edge of the outer oblique B surface.

Further, the B face of admitting air is equipped with the annular channel to the indent, interior fire circle is equipped with outer loop B groove and inner ring B groove and interior side opening, interior fire cover seat is arranged in when interior fire circles, the lower extreme of inner seat outer wall falls into outer loop B groove, the lower extreme of inner seat inner wall falls into inner ring B groove.

The technical scheme for solving the technical problem further comprises the following steps: the utility model provides an interior outer fire assembly, includes outer distributor and interior distributor, outer distributor is including being equipped with outer fire circle that draws the tube hole outward, arranging in outer fire lid seat on the outer fire circle and arranging in outer fire lid on the outer fire lid seat, outer fire lid is connected gradually and is enclosed by annular top surface, the outer B face of annular, annular face of admitting air and the outside of annular to one side. The outer surface B inclines from the inner upper side to the outer lower side, the outer surface inclines from the outer upper side to the inner lower side, and the outer surface is uniformly provided with a plurality of outer fire grooves penetrating through the upper edge and the lower edge of the outer surface.

The outer fire cover seat at least comprises an annular air inlet ring, an inner inclined plane which is integrally connected with the inner edge of the air inlet ring, an outer inclined plane which is integrally connected with the outer edge of the air inlet ring, an outer seat inner wall which is integrally connected with the inner edge of the inner inclined plane, and an outer seat outer wall which is integrally connected with the outer edge of the outer inclined plane, wherein the inner inclined plane is inclined from the upper inside to the lower outside, the outer inclined plane is inclined from the upper outside to the lower inside, and the air inlet ring is uniformly provided with a plurality of air inlets.

When the outer fire cover is arranged on the outer fire cover seat, the outer surface B is tightly attached to the inner inclined surface, and the outer surface B is tightly attached to the outer inclined surface. And a proper gap is formed between the lower edge of the air inlet surface and the air inlet ring, and at the moment, a plurality of air outlet holes are formed between the top surface and the outer upper edge of the outer inclined surface.

Interior firearm including be equipped with in draw the interior fire circle of tub hole, arrange in interior fire lid seat on the interior fire circle and arrange in interior fire lid on the interior fire lid seat, interior fire lid is connected gradually and encloses by annular top B face, the interior B face of oblique annular, annular B face of admitting air and the inner face of oblique annular, interior B face is from the outside below slope of interior top, the inner face is from the interior below slope of outside top. The inner surface is provided with a plurality of inner fire grooves which penetrate through the upper edge and the lower edge of the inner surface.

Interior fire lid seat at least include annular B circle that admits air, with the interior oblique B face of the same body coupling of inner edge of B circle that admits air, with the outer oblique B face of the same body coupling of outer fringe of B circle that admits air, with interior seat inner wall of the same body coupling of interior reason in the interior oblique B face, with interior seat outer wall of the same body coupling of outer reason on the outer surface of oblique B face, interior oblique B face is by the outside below slope in interior top, the slope of the interior below in the outside top of outer oblique B face, it is equipped with a plurality of B hole that admits air uniformly to admit air the B circle, works as interior fire lid is arranged in when on the interior fire lid seat, the inner face with the interior oblique B face is hugged closely, interior B face with interior oblique B face is hugged closely. And a proper gap is formed between the lower edge of the air inlet B surface and the air inlet B ring, and at the moment, a plurality of outer air outlet B holes are formed between the top B surface and the outer upper edge of the outer oblique B surface.

Furthermore, the air inlet surface and the air inlet surface B are both provided with annular grooves which are concave upwards, the outer fire ring is provided with an outer annular groove and an inner annular groove, the inner fire ring is provided with an outer annular groove B, an inner annular groove B and an inner side hole, when the outer fire cover seat is arranged on the outer fire ring, the lower end of the outer wall of the outer seat falls into the outer annular groove, and the lower end of the inner wall of the outer seat falls into the inner annular groove. When the inner fire cover seat is arranged on the inner fire ring, the lower end of the outer wall of the inner seat falls into the outer ring B groove, and the lower end of the inner wall of the inner seat falls into the inner ring B groove.

The technical scheme for solving the technical problem further comprises the following steps: the utility model provides an interior outer fire assembly, includes outer distributor and interior distributor, outer distributor is including being equipped with outer fire circle that draws the tube hole outward, arranging in outer fire lid seat on the outer fire circle and arranging in outer fire lid on the outer fire lid seat, outer fire lid is connected gradually and is enclosed by annular top surface, the outer B face of annular, annular face of admitting air and the outside of annular to one side. The outer surface B inclines from the inner upper side to the outer lower side, the outer surface inclines from the outer upper side to the inner lower side, and the outer surface is uniformly provided with a plurality of outer fire grooves penetrating through the upper edge and the lower edge of the outer surface.

The outer fire cover seat at least comprises an annular air inlet ring, an inner inclined plane which is integrally connected with the inner edge of the air inlet ring, an outer inclined plane which is integrally connected with the outer edge of the air inlet ring, an outer seat inner wall which is integrally connected with the inner edge of the inner inclined plane, and an outer seat outer wall which is integrally connected with the outer edge of the outer inclined plane, wherein the inner inclined plane is inclined from the upper inside to the lower outside, the outer inclined plane is inclined from the upper outside to the lower inside, and the air inlet ring is uniformly provided with a plurality of air inlets.

When the outer fire cover is arranged on the outer fire cover seat, the outer surface B is tightly attached to the inner inclined surface, and the outer surface B is tightly attached to the outer inclined surface. And a proper gap is formed between the lower edge of the air inlet surface and the air inlet ring, and at the moment, a plurality of air outlet holes are formed between the top surface and the outer upper edge of the outer inclined surface.

Interior firearm including be equipped with in draw the interior fire circle of tub hole, arrange in interior fire lid seat on the interior fire circle and arrange in interior fire lid on the interior fire lid seat, interior fire lid is connected gradually and encloses by annular top B face, the interior B face of oblique annular, annular B face of admitting air and the inner face of oblique annular, interior B face is from the outside below slope of interior top, the inner face is from the interior below slope of outside top. The inner surface is provided with a plurality of inner fire grooves which penetrate through the upper edge and the lower edge of the inner surface. The inner surface B is provided with a plurality of inner fire grooves B which penetrate through the upper edge and the lower edge of the inner surface B.

Interior fire lid seat at least include annular B circle that admits air, with the interior oblique B face of the same body coupling of inner edge of B circle that admits air, with the outer oblique B face of the same body coupling of outer fringe of B circle that admits air, with interior seat inner wall of the same body coupling of interior reason in the interior oblique B face, with interior seat outer wall of the same body coupling of outer reason on the outer surface of oblique B face, interior oblique B face is by the outside below slope in interior top, the slope of the interior below in the outside top of outer oblique B face, it is equipped with a plurality of B hole that admits air uniformly to admit air the B circle, works as interior fire lid is arranged in when on the interior fire lid seat, the inner face with the interior oblique B face is hugged closely, interior B face with interior oblique B face is hugged closely. And a proper gap is formed between the lower edge of the air inlet B surface and the air inlet B ring, a plurality of outer air outlet B holes are formed between the top B surface and the outer upper edge of the outer inclined B surface, and a plurality of inner air outlet B holes are formed between the top B surface and the inner upper edge of the inner inclined B surface.

Furthermore, the air inlet surface and the air inlet surface B are both provided with annular grooves which are concave upwards, the outer fire ring is provided with an outer annular groove and an inner annular groove, the inner fire ring is provided with an outer annular groove B, an inner annular groove B and an inner side hole, when the outer fire cover seat is arranged on the outer fire ring, the lower end of the outer wall of the outer seat falls into the outer annular groove, and the lower end of the inner wall of the outer seat falls into the inner annular groove. When the inner fire cover seat is arranged on the inner fire ring, the lower end of the outer wall of the inner seat falls into the outer ring B groove, and the lower end of the inner wall of the inner seat falls into the inner ring B groove.

In the embodiment of the external fire distributor, fuel gas flows into a cavity formed by the external fire ring, the outer wall of the outer seat, the air inlet ring and the inner wall of the outer seat from the air outlet end of the external injection pipe penetrating through the external injection pipe hole, flows into the cavity between the air inlet ring and the air inlet surface through the plurality of air inlets, then flows out from the plurality of external air outlets after passing through the plurality of air passages formed by the external inclined plane and the plurality of external fire grooves, and flows out from the plurality of internal air outlets after passing through the plurality of air passages formed by the internal inclined plane and the plurality of external fire B grooves.

In the same way, the internal fire distributor of the internal and external fire assembly, the gas flows into the cavity enclosed by the internal fire ring, the internal seat outer wall, the air inlet B ring and the internal seat inner wall from the air outlet end of the internal injection pipe hole, passes through the plurality of air inlet B holes, flows into the air inlet B ring and the cavity between the air inlet B faces, and then passes through the plurality of air passages formed by the external inclined B faces and the plurality of internal fire grooves to flow out of the plurality of air outlet B holes, and in the embodiment provided with the plurality of internal fire B grooves, the gas also simultaneously passes through the plurality of air passages formed by the internal inclined B faces and the plurality of internal fire B grooves to flow out of the air outlet B holes from the plurality of internal air outlet B holes.

The utility model has the advantages that the outer fire cover, the inner fire cover and the like are made of stainless steel, the material cost and the processing cost are reduced, and the combustion efficiency is improved; compared with the burner in the prior art, the burner manufactured by the internal and external fire assemblies forms more flame rings, so that the heated object is heated more uniformly, and the burning efficiency is higher.

Drawings

Fig. 1 is a perspective view of embodiment 1 of the present invention.

Fig. 2 is a perspective view of embodiment 1 of the present invention.

Fig. 3 is an exploded view of embodiment 1 of the present invention.

Fig. 4 is an exploded view of embodiment 1 of the present invention.

Fig. 5 is a perspective view of embodiment 2 of the present invention.

Fig. 6 is a perspective view of the embodiment 2-5 of the present invention.

Fig. 7 is an exploded view of example 2 of the present invention.

Fig. 8 is an exploded view of embodiment 2 of the present invention.

Fig. 9 is a perspective view of embodiment 3 of the present invention.

Fig. 10 is an exploded view of embodiment 3 of the present invention.

Fig. 11 is an exploded view of embodiment 3 of the present invention.

Fig. 12 is a perspective view of embodiment 4 of the present invention.

Fig. 13 is an exploded view of embodiment 4 of the present invention.

Fig. 14 is an exploded view of embodiment 4 of the present invention.

Fig. 15 is a perspective view of embodiment 5 of the present invention.

Fig. 16 is an exploded view of embodiment 5 of the present invention.

Fig. 17 is an exploded view of example 5 of the present invention.

FIG. 18 is a perspective view of the outer cap base and the inner cap base of examples 2 to 5 of the present invention.

FIG. 19 is a perspective view of an outer fire cover base according to embodiments 1-5 of the present invention.

FIG. 20 is a perspective view of an inner fire cover holder according to embodiments 2-5 of the present invention.

Fig. 21 is a perspective view of an outer fire cover in accordance with embodiments 1-3 of the present invention.

Fig. 22 is a perspective view of the inner fire cover according to embodiment 3-4 of the present invention.

Fig. 23 is a perspective view of the inner fire cover in embodiments 2 and 5 of the present invention.

Fig. 24 is a sectional perspective view of the outer fire lid of examples 1 to 3 of the present invention.

FIG. 25 is a sectional perspective view of an outer fire cover base according to embodiments 1-5 of the present invention.

FIG. 26 is a sectional perspective view of the outer cap base and the inner cap base according to embodiments 2-5 of the present invention.

In the figure: 1. outer vent hole, 2, top surface, 3, inner vent hole, 4, outer seat inner wall, 5, outer seat outer wall, 6, outer fire ring, 7, outer injector hole, 8, air inlet surface, 9, outer B surface, 10, outer fire B groove, 11, outer surface, 12, outer fire groove, 13, air inlet hole, 14, inner inclined surface, 15, outer inclined surface, 16, inner seat inner wall, 17, inner seat outer wall, 18, outer air B hole, 19, top B surface, 20, inner air outlet B hole, 21, inner fire ring, 22, inner injector hole, 23, air inlet B surface, 24, inner surface, 25, inner B surface, 26, inner side hole, 27, inner inclined B surface, 28, outer inclined B surface, 29, air inlet ring, 30, air inlet B ring, 31, air inlet B hole, 32, inner fire groove, 33, inner fire B groove, 34, outer ring groove, 35, inner ring groove, 36, outer ring B groove, 37, inner ring groove.

Detailed Description

Example 1: an outer fire distributor comprises an outer fire ring 6 provided with an outer injection pipe hole 7, an outer fire cover seat arranged on the outer fire ring 6 and an outer fire cover arranged on the outer fire cover seat, wherein the outer fire cover is formed by sequentially connecting and enclosing an annular top surface 2, an inclined annular outer B surface 9, an annular air inlet surface 8 and an inclined annular outer surface 11. The outer B surface 9 inclines from the inner upper part to the outer lower part, the outer surface 11 inclines from the outer upper part to the inner lower part, the outer surface 11 is uniformly provided with a plurality of outer fire grooves 12 penetrating through the upper and lower edges of the outer surface 11, the outer B surface 9 is uniformly provided with a plurality of outer fire grooves 10 penetrating through the upper and lower edges of the outer B surface 9, and the air inlet surface 8 is provided with an upward concave annular groove. The outer fire ring 6, the outer fire cover seat and the outer fire cover are all made of stainless steel, and the outer fire ring 6 is further provided with an outer ring groove 34 and an inner ring groove 35.

The outer fire cover seat at least comprises an annular air inlet ring 29, an inner inclined surface 14 which is integrally connected with the inner edge of the air inlet ring 29, an outer inclined surface 15 which is integrally connected with the outer edge of the air inlet ring 29, an outer seat inner wall 4 which is integrally connected with the inner upper edge of the inner inclined surface 14 and an outer seat outer wall 5 which is integrally connected with the outer upper edge of the outer inclined surface 15, wherein the inner inclined surface 14 inclines from the upper inside to the lower outside, the outer inclined surface 15 inclines from the upper outside to the lower inside, the air inlet ring 29 is uniformly provided with a plurality of air inlet holes 13, when the outer fire cover seat is arranged on the outer fire ring 6, the lower end of the outer seat outer wall 5 falls into the outer annular groove 34, and the lower end of the outer seat inner wall 4 falls into the inner annular groove 35.

When the outer fire cover is arranged on the outer fire cover seat, the outer B surface 9 is tightly attached to the inner inclined surface 14, and the outer surface 11 is tightly attached to the outer inclined surface 15. A proper gap is formed between the lower edge of the air inlet surface 8 and the air inlet ring 29, at this time, a plurality of outer air outlets 1 are formed between the top surface 2 and the outer upper edge of the outer inclined surface 15, and a plurality of inner air outlets 3 are formed between the top surface 2 and the inner upper edge of the inner inclined surface 14.

Example 2: the utility model provides an interior outer fire assembly, includes interior firearm and embodiment 1 an outer fire distributor, interior firearm including be equipped with in draw the interior fire circle 21 of tub hole 22 and inboard hole 26, arrange in interior fire lid seat on the interior fire circle 21 with arrange in interior fire lid on the lid seat of fire, interior fire lid is connected gradually and encloses by annular top B face 19, the interior B face 25 of oblique annular, annular B face 23 that admits air and the interior face 24 of oblique annular, interior B face 25 is from interior top below slope outside, interior 24 is from the slope of the interior below of outside top below. The inner surface 24 is provided with a plurality of inner fire grooves 32 which penetrate through the upper and lower edges of the inner surface 24. The inner B surface 25 is provided with a plurality of inner fire B grooves 33 which penetrate through the upper edge and the lower edge of the inner B surface 25, and the air inlet B surface 23 is provided with an upward concave annular groove. The inner fire ring 21, the inner fire cover seat and the inner fire cover are all made of stainless steel.

Interior fire lid seat include annular B circle 30 that admits air at least, with the interior oblique B face 27 that the inner edge of B circle 30 that admits air is connected with the body, with the outer oblique B face 28 that the outer edge of B circle 30 that admits air is connected with the body, with interior seat inner wall 16 that the interior upper limb of interior oblique B face 27 is connected with the body, with interior seat outer wall 17 that the outer upper limb of the outer oblique B face 28 is connected with the body, interior oblique B face 27 is by the outside below slope of interior top, the slope of the outside oblique B face 28 is by the inside below of top outside, it admits air B circle 30 and is equipped with a plurality of B hole 31 that admits air uniformly, and interior fire circle 21 still is equipped with outer loop B groove 36 and inner ring B groove 37. When the inner fire cover seat is arranged on the inner fire ring 21, the lower end of the inner seat outer wall 17 falls into the outer ring B groove 36, and the lower end of the inner seat inner wall 16 falls into the inner ring B groove 37. When the inner fire cover is arranged on the inner fire cover seat, the inner surface 24 is tightly attached to the outer oblique B surface 28, and the inner B surface 25 is tightly attached to the inner oblique B surface 27. A proper gap is formed between the lower edge of the air inlet B surface 23 and the air inlet B ring 30, at this time, a plurality of outer air outlet B holes 18 are formed between the top B surface 19 and the outer upper edge of the outer inclined B surface 28, and a plurality of inner air outlet B holes 20 are formed between the top B surface 19 and the inner upper edge of the inner inclined B surface 27.

Example 3: the utility model provides an interior outer fire assembly, includes interior firearm and embodiment 1 an outer fire distributor, interior firearm including be equipped with in draw the interior fire circle 21 of tub hole 22 and inboard hole 26, arrange in interior fire lid seat on the interior fire circle 21 with arrange in interior fire lid on the lid seat of fire, interior fire lid is connected gradually and encloses by annular top B face 19, the interior B face 25 of oblique annular, annular B face 23 that admits air and the interior face 24 of oblique annular, interior B face 25 is from interior top below slope outside, interior 24 is from the slope of the interior below of outside top below. The inner surface 24 is provided with a plurality of inner fire grooves 32 penetrating through the upper and lower edges of the inner surface 24, and the air inlet B surface 23 is provided with an upward concave annular groove. The inner fire ring 21, the inner fire cover seat and the inner fire cover are all made of stainless steel.

Interior fire lid seat include annular B circle 30 that admits air at least, with the interior oblique B face 27 that the inner edge of B circle 30 that admits air is connected with the body, with the outer oblique B face 28 that the outer edge of B circle 30 that admits air is connected with the body, with interior seat inner wall 16 that the interior upper limb of interior oblique B face 27 is connected with the body, with interior seat outer wall 17 that the outer upper limb of the outer oblique B face 28 is connected with the body, interior oblique B face 27 is by the outside below slope of interior top, the slope of the outside oblique B face 28 is by the inside below of top outside, it admits air B circle 30 and is equipped with a plurality of B hole 31 that admits air uniformly, and interior fire circle 21 still is equipped with outer loop B groove 36 and inner ring B groove 37. When the inner fire cover seat is arranged on the inner fire ring 21, the lower end of the outer wall 17 of the inner seat falls into the outer ring B groove 36, the lower end of the inner wall 16 of the inner seat falls into the inner ring B groove 37, when the inner fire cover is arranged on the inner fire cover seat, the inner surface 24 is tightly attached to the outer oblique B surface 28, and the inner B surface 25 is tightly attached to the inner oblique B surface 27. A proper gap is formed between the lower edge of the air inlet B surface 23 and the air inlet B ring, and at the moment, a plurality of outer air outlet B holes 18 are formed between the top B surface 19 and the outer upper edge of the outer inclined B surface 28.

Example 4: the utility model provides an interior outer fire assembly, includes outer distributor and interior distributor, outer distributor is including being equipped with outer fire circle 6, arranging that draw tube hole 7 outward fire lid seat on the outer fire circle 6 and arranging in outer fire lid on the lid seat of fire, outer fire lid is connected gradually and is enclosed by annular top surface 2, the outer B face 9 of annular, annular inlet surface 8 and the annular outside 11 of inclining to one side. The outer B surface 9 inclines from the inner upper side to the outer lower side, the outer surface 11 inclines from the outer upper side to the inner lower side, the outer surface 11 is uniformly provided with a plurality of outer fire grooves 12 penetrating through the upper and lower edges of the outer surface 11, and the air inlet surface 8 is provided with an annular groove which is concave upwards. The outer fire ring 6, the outer fire cover seat and the outer fire cover are all made of stainless steel. The outer fire cap seat is also provided with an outer annular groove 34 and an inner annular groove 35.

The outer fire cover seat at least comprises an annular air inlet ring 29, an inner inclined plane 14 which is integrally connected with the inner edge of the air inlet ring 29, an outer inclined plane 15 which is integrally connected with the outer edge of the air inlet ring 29, an outer seat inner wall 4 which is integrally connected with the inner upper edge of the inner inclined plane 14, and an outer seat outer wall 5 which is integrally connected with the outer upper edge of the outer inclined plane 15, wherein the inner inclined plane 14 inclines from the upper inner part to the lower outer part, the outer inclined plane 15 inclines from the upper outer part to the lower inner part, and the air inlet ring 29 is uniformly provided with a plurality of air inlet holes 13. When the outer fire cover seat is arranged on the outer fire ring 6, the lower end of the outer seat outer wall 5 falls into the outer annular groove 34, and the lower end of the outer seat inner wall 4 falls into the inner annular groove 35.

When the outer fire cover is arranged on the outer fire cover seat, the outer B surface 9 is tightly attached to the inner inclined surface 14, and the outer surface 11 is tightly attached to the outer inclined surface 15. A proper gap is formed between the lower edge of the air inlet surface 8 and the air inlet ring 29, and at this time, a plurality of air outlet holes 1 are formed between the top surface 2 and the outer upper edge of the outer inclined surface 15.

Interior firearm is including being equipped with interior fire circle 21 of drawing pipe hole 22 and inboard hole 26, arranging in interior fire lid seat on the interior fire circle 21 and arranging in interior fire lid on the interior fire lid seat, interior fire lid is connected gradually and encloses by annular top B face 19, the interior B face 25 of oblique annular, annular B face 23 that admits air and the inner face 24 of oblique annular, interior B face 25 is from the outside below slope of interior top, the inside 24 is from the inside below slope of outside top. The inner surface 24 is provided with a plurality of inner fire grooves 32 penetrating through the upper and lower edges of the inner surface 24, and the air inlet B surface 23 is provided with an upward concave annular groove. The inner fire ring 21, the inner fire cover seat and the inner fire cover are all made of stainless steel.

The inner fire cover seat at least comprises an annular air inlet B ring 30, an inner oblique B surface 27 which is connected with the inner edge of the air inlet B ring 30 in a same body mode, an outer oblique B surface 28 which is connected with the outer edge of the air inlet B ring 30 in a same body mode, an inner seat inner wall 16 which is connected with the inner edge of the inner oblique B surface 27 in a same body mode, and an inner seat outer wall 17 which is connected with the outer edge of the outer oblique B surface 28 in a same body mode, wherein the inner oblique B surface 27 is inclined from the upper inner side to the lower outer side, the outer oblique B surface 28 is inclined from the upper outer side to the lower inner side, a plurality of air inlet B holes 31 are uniformly formed in the air inlet B ring 30, and the inner fire ring 21 is further provided with an outer ring B groove 36 and an inner ring B groove 37. When the inner fire cover seat is arranged on the inner fire ring 21, the lower end of the outer wall 17 of the inner seat falls into the outer ring B groove 36, the lower end of the inner wall 16 of the inner seat falls into the inner ring B groove 37, when the inner fire cover is arranged on the inner fire cover seat, the inner surface 24 is tightly attached to the outer oblique B surface 28, and the inner B surface 25 is tightly attached to the inner oblique B surface 27. A proper gap is formed between the lower edge of the air inlet B surface 23 and the air inlet B ring 30, and at this time, a plurality of outer air outlet B holes 18 are formed between the top B surface 19 and the outer upper edge of the outer inclined B surface 28.

Example 5: the utility model provides an interior outer fire assembly, includes outer distributor and interior distributor, outer distributor is including being equipped with outer fire circle 6, arranging that draw tube hole 7 outward fire lid seat on the outer fire circle 6 and arranging in outer fire lid on the lid seat of fire, outer fire lid is connected gradually and is enclosed by annular top surface 2, the outer B face 9 of annular, annular inlet surface 8 and the annular outside 11 of inclining to one side. The outer B surface 9 inclines from the inner upper side to the outer lower side, the outer surface 11 inclines from the outer upper side to the inner lower side, the outer surface 11 is uniformly provided with a plurality of outer fire grooves 12 penetrating through the upper and lower edges of the outer surface 11, and the air inlet surface 8 is provided with an annular groove which is concave upwards. The outer fire ring 6, the outer fire cover seat and the outer fire cover are all made of stainless steel. The outer fire cap seat is also provided with an outer annular groove 34 and an inner annular groove 35.

The outer fire cover seat at least comprises an annular air inlet ring 29, an inner inclined plane 14 which is integrally connected with the inner edge of the air inlet ring 29, an outer inclined plane 15 which is integrally connected with the outer edge of the air inlet ring 29, an outer seat inner wall 4 which is integrally connected with the inner upper edge of the inner inclined plane 14, and an outer seat outer wall 5 which is integrally connected with the outer upper edge of the outer inclined plane 15, wherein the inner inclined plane 14 inclines from the upper inner part to the lower outer part, the outer inclined plane 15 inclines from the upper outer part to the lower inner part, and the air inlet ring 29 is uniformly provided with a plurality of air inlet holes 13. When the outer fire cover seat is arranged on the outer fire ring 6, the lower end of the outer seat outer wall 5 falls into the outer annular groove 34, and the lower end of the outer seat inner wall 4 falls into the inner annular groove 35.

When the outer fire cover is arranged on the outer fire cover seat, the outer B surface 9 is tightly attached to the inner inclined surface 14, and the outer surface 11 is tightly attached to the outer inclined surface 15. A proper gap is formed between the lower edge of the air inlet surface 8 and the air inlet ring 29, and at this time, a plurality of air outlet holes 1 are formed between the top surface 2 and the outer upper edge of the outer inclined surface 15.

Interior firearm is including being equipped with interior fire circle 21 of drawing pipe hole 22 and inboard hole 26, arranging in interior fire lid seat on the interior fire circle 21 and arranging in interior fire lid on the interior fire lid seat, interior fire lid is connected gradually and encloses by annular top B face 19, the interior B face 25 of oblique annular, annular B face 23 that admits air and the inner face 24 of oblique annular, interior B face 25 is from the outside below slope of interior top, the inside 24 is from the inside below slope of outside top. The inner surface 24 is provided with a plurality of inner fire grooves 32 which penetrate through the upper and lower edges of the inner surface 24. The inner B surface 25 is provided with a plurality of inner fire B grooves 33 which penetrate through the upper edge and the lower edge of the inner B surface 25, and the air inlet B surface 23 is provided with an upward concave annular groove. The inner fire ring 21, the inner fire cover seat and the inner fire cover are all made of stainless steel.

Interior fire lid seat include annular B circle 30 that admits air at least, with the interior oblique B face 27 that the inner edge of B circle 30 that admits air is connected with the body, with the outer oblique B face 28 that the outer edge of B circle 30 that admits air is connected with the body, with interior seat inner wall 16 that the interior upper limb of interior oblique B face 27 is connected with the body, with interior seat outer wall 17 that the outer upper limb of the outer oblique B face 28 is connected with the body, interior oblique B face 27 is by the outside below slope of interior top, the slope of the outside oblique B face 28 is by the inside below of top outside, it admits air B circle 30 and is equipped with a plurality of B hole 31 that admits air uniformly, and interior fire circle 21 still is equipped with outer loop B groove 36 and inner ring B groove 37. When the inner fire cover seat is arranged on the inner fire ring 21, the lower end of the outer wall 17 of the inner seat falls into the outer ring B groove 36, the lower end of the inner wall 16 of the inner seat falls into the inner ring B groove 37, when the inner fire cover is arranged on the inner fire cover seat, the inner surface 24 is tightly attached to the outer oblique B surface 28, and the inner B surface 25 is tightly attached to the inner oblique B surface 27. A proper gap is formed between the lower edge of the air inlet B surface 23 and the air inlet B ring, at this time, a plurality of outer air outlet B holes 18 are formed between the top B surface 19 and the outer upper edge of the outer inclined B surface 28, and a plurality of inner air outlet B holes 20 are formed between the top B surface 19 and the inner upper edge of the inner inclined B surface 27.

Claims (10)

1. The utility model provides an outer distributor, including outer fire circle (6) that is equipped with outer injection pipe hole (7), arrange in outer fire lid seat on outer fire circle (6) with arrange in outer fire lid on the outer fire lid seat, its characterized in that, outer fire lid is connected gradually and encloses by annular top surface (2), annular outer B face (9) to one side, annular air intake face (8) and annular outside (11) to one side, outer B face (9) are from inside top outside below slope, outside (11) are from outside top inside below slope, outside (11) are equipped with a plurality of strips uniformly and run through outer fire groove (12) of lower edge on outside (11), outer B face (9) are equipped with a plurality of strips uniformly and run through outer fire B groove (10) of lower edge on outer B face (9), outer fire lid seat include annular air intake circle (29) at least, with interior inclined plane (14) of being connected with the body of the inner edge of air intake circle (29) interior inclined plane (14) that connect with one's body, The outer side of the air inlet ring (29) is integrally connected with the outer edge of the air inlet ring (29), the outer seat inner wall (4) is integrally connected with the inner upper edge of the inner side of the outer side of the inner side of the outer side of the inner side of the outer side of the inner side of the outer side of the inner side of the outer side of the inner side of the outer side of the inner side of the.

2. The outer fire divider according to claim 1, characterized in that the air inlet surface (8) is provided with an upwardly concave annular groove, the outer fire ring (6) is provided with an outer annular groove (34) and an inner annular groove (35), and when the outer fire cover is seated on the outer fire ring (6), the lower end of the outer seat outer wall (5) falls into the outer annular groove (34), and the lower end of the outer seat inner wall (4) falls into the inner annular groove (35).

3. The external fire divider according to claim 1, characterized in that the external fire ring (6), the external fire cover seat and the external fire cover are all made of stainless steel material.

4. An inner and outer fire assembly comprising an inner fire distributor and an outer fire distributor according to any one of claims 1 to 3, wherein the inner fire distributor comprises an inner fire ring (21) provided with an inner injection pipe hole (22), an inner fire cover seat arranged on the inner fire ring (21) and an inner fire cover arranged on the inner fire cover seat, the inner fire cover is formed by sequentially connecting and enclosing an annular top B surface (19), an inclined annular inner B surface (25), an annular air inlet B surface (23) and an inclined annular inner surface (24), the inner B surface (25) is inclined from the inner upper side to the outer lower side, the inner surface (24) is inclined from the outer upper side to the inner lower side, the inner surface (24) is provided with a plurality of inner fire grooves (32) penetrating through the upper and lower edges of the inner surface (24), the inner B surface (25) is provided with a plurality of inner fire B grooves (33) penetrating through the upper and lower edges of the inner B surface (25), the inner fire cover seat at least comprises an annular air inlet B ring (30), an inner oblique B surface (27) which is integrally connected with the inner edge of the air inlet B ring (30), an outer oblique B surface (28) which is integrally connected with the outer edge of the air inlet B ring (30), an inner seat inner wall (16) which is integrally connected with the inner upper edge of the inner oblique B surface (27), and an inner seat outer wall (17) which is integrally connected with the outer upper edge of the outer oblique B surface (28), wherein the inner oblique B surface (27) is inclined from the inner upper side to the outer lower side, the outer oblique B surface (28) is inclined from the outer upper side to the inner lower side, a plurality of air inlet B holes (31) are uniformly formed in the air inlet B ring (30), when the inner fire cover is arranged on the inner fire cover seat, the inner surface (24) is tightly attached to the outer oblique B surface (28), the inner oblique B surface (25) is tightly attached to the inner oblique B surface (27), and a proper gap is reserved between the lower edge of the air inlet B surface (23) and the air inlet B ring (30), at the moment, a plurality of outer air outlet B holes (18) are formed between the top B surface (19) and the outer upper edge of the outer inclined B surface (28), and a plurality of inner air outlet B holes (20) are formed between the top B surface (19) and the inner upper edge of the inner inclined B surface (27).

5. An internal and external fire assembly, comprising an internal fire distributor and an external fire distributor according to any one of claims 1 to 3, wherein the internal fire distributor comprises an internal fire ring (21) provided with an internal injection pipe hole (22), an internal fire cover seat arranged on the internal fire ring (21) and an internal fire cover arranged on the internal fire cover seat, the internal fire cover is formed by sequentially connecting and enclosing an annular top B surface (19), an inclined annular internal B surface (25), an annular air inlet B surface (23) and an inclined annular inner surface (24), the internal B surface (25) is inclined from the inner upper part to the outer lower part, the inner surface (24) is inclined from the outer upper part to the inner lower part, the inner surface (24) is provided with a plurality of internal fire grooves (32) penetrating through the upper and lower edges of the inner surface (24), and the internal fire cover seat at least comprises an annular air inlet B ring (30) and an internal inclined B surface (27) which is integrally connected with the inner edge of the air inlet B ring (30), An outer oblique B surface (28) which is integrally connected with the outer edge of the air inlet B ring (30), an inner seat inner wall (16) which is integrally connected with the inner upper edge of the inner oblique B surface (27), an inner seat outer wall (17) which is integrally connected with the outer upper edge of the outer oblique B surface (28), the inner inclined B surface (27) inclines from the inner upper part to the outer lower part, the outer inclined B surface (28) inclines from the outer upper part to the inner lower part, the air inlet B ring (30) is uniformly provided with a plurality of air inlet B holes (31), when the inner fire cover is arranged on the inner fire cover seat, the inner surface (24) is clung to the outer inclined B surface (28), the inner B surface (25) is closely attached to the inner oblique B surface (27), and a proper gap is formed between the lower edge of the air inlet B surface (23) and the air inlet B ring (30), a plurality of outer air outlet B holes (18) are formed between the top B surface (19) and the outer upper edge of the outer inclined B surface (28).

6. The utility model provides an interior external fire assembly, includes outer distributor and interior distributor, its characterized in that, outer distributor is including outer fire circle (6) that is equipped with outer injection pipe hole (7), arranges in outer fire lid seat on outer fire circle (6) and arrange in outer fire lid on the outer fire lid seat, outer fire lid is connected gradually and encloses by annular top surface (2), inclined ring's outer B face (9), annular face of admitting air (8) and inclined ring's outside (11), outer B face (9) are from inside top outside below slope, outside (11) are from outside top inside below slope, outside (11) are equipped with a plurality of uniformly run through outer fire groove (12) on outside (11), outer fire lid seat include annular ring of admitting air (29) at least, with the outer inclined plane (15) of the same body coupling of the ring of admitting air (29) inner edge, With interior upper limb of inner inclined plane (14) is interior to go up outer seat inner wall (4) of being connected with the body, with outer seat outer wall (5) of going up the same body connection of outer inclined plane (15) outer upper limb, interior inclined plane (14) are by the outside below slope of going up in the top, outer inclined plane (15) are by the outside below slope of going up in, air inlet ring (29) are equipped with a plurality of inlet port (13) uniformly, when outer fire lid is arranged in on the outer fire lid seat, outer B face (9) with interior inclined plane (14) are hugged closely, outside (11) with outer inclined plane (15) are hugged closely, the lower edge of air inlet face (8) with have appropriate clearance between air inlet ring (29), at this moment, top surface (2) with outer inclined plane (15) go up between and form a plurality of gas pocket (1) outward, interior firearm is including being equipped with interior fire circle (21) of drawing pipe hole (22) in leading, Arrange interior fire lid seat on interior fire circle (21) and arrange interior fire lid on the interior fire lid seat in proper order, interior fire lid is connected gradually and encloses by annular top B face (19), interior B face (25) of oblique annular, annular B face (23) that admits air and oblique annular inner face (24), interior B face (25) from interior top to outside below slope, inner face (24) from the interior top below slope of outside, inner face (24) are equipped with a plurality of interior fire grooves (32) that run through the upper and lower edges of inner face (24), interior fire lid seat includes annular B circle (30) that admits air at least, with the interior oblique B face (27) of the internal edge of B circle (30) of admitting air in-corporately connected, with the outer oblique B face (28) of the outer fringe of B circle (30) in-corporately connected, with the interior seat inner wall (16) of the interior edge of B circle (27) in-corporately connected, with the outer seat outer edge (17) of the outer oblique B face (28) in-corporately connected, the inner oblique B face (27) is inclined from the inner upper side to the outer lower side, the outer oblique B face (28) is inclined from the outer upper side to the inner lower side, the air inlet B ring (30) is uniformly provided with a plurality of air inlet B holes (31), when the inner fire cover is arranged on the inner fire cover seat, the inner face (24) is tightly attached to the outer oblique B face (28), the inner B face (25) is tightly attached to the inner oblique B face (27), a proper gap is formed between the lower edge of the air inlet B face (23) and the air inlet B ring (30), and at the moment, a plurality of outer air outlet B holes (18) are formed between the top B face (19) and the outer upper edge of the outer oblique B face (28).

7. The utility model provides an interior external fire assembly, includes outer distributor and interior distributor, its characterized in that, outer distributor is including outer fire circle (6) that is equipped with outer injection pipe hole (7), arranges in outer fire lid seat on outer fire circle (6) and arrange in outer fire lid on the outer fire lid seat, outer fire lid is connected gradually and encloses by annular top surface (2), inclined ring's outer B face (9), annular face of admitting air (8) and inclined ring's outside (11), outer B face (9) are from inside top outside below slope, outside (11) are from outside top inside below slope, outside (11) are equipped with a plurality of uniformly run through outer fire groove (12) on outside (11), outer fire lid seat include annular ring of admitting air (29) at least, with the outer inclined plane (15) of the same body coupling of the ring of admitting air (29) inner edge, With interior upper limb of inner inclined plane (14) is interior to go up outer seat inner wall (4) of being connected with the body, with outer seat outer wall (5) of going up the same body connection of outer inclined plane (15) outer upper limb, interior inclined plane (14) are by the outside below slope of going up in the top, outer inclined plane (15) are by the outside below slope of going up in, air inlet ring (29) are equipped with a plurality of inlet port (13) uniformly, when outer fire lid is arranged in on the outer fire lid seat, outer B face (9) with interior inclined plane (14) are hugged closely, outside (11) with outer inclined plane (15) are hugged closely, the lower edge of air inlet face (8) with have appropriate clearance between air inlet ring (29), at this moment, top surface (2) with outer inclined plane (15) go up between and form a plurality of gas pocket (1) outward, interior firearm is including being equipped with interior fire circle (21) of drawing pipe hole (22) in leading, Arrange in interior fire lid seat on interior fire circle (21) with arrange in interior fire lid on the interior fire lid seat, interior fire lid is connected gradually and encloses by annular top B face (19), interior B face (25) of oblique annular, annular B face (23) and oblique annular inner face (24) of admitting air, interior B face (25) from the outside below slope of interior top, inner face (24) from the inside below slope of outer top, inner face (24) are equipped with a plurality of and run through interior fire groove (32) of lower edge on inner face (24), interior B face (25) are equipped with a plurality of and run through interior fire B groove (33) of lower edge on interior B face (25), interior fire lid seat at least includes annular B circle (30) of admitting air, with interior oblique B face (27) of being connected with the inner edge of B circle (30) of admitting air is in the same body, with outer oblique B face (28) of the outer fringe in the same body connection of B circle (30) of admitting air, An inner seat inner wall (16) which is integrally connected with the inner upper edge of the inner inclined B surface (27), an inner seat outer wall (17) which is integrally connected with the outer upper edge of the outer inclined B surface (28), the inner inclined B surface (27) inclines from the inner upper part to the outer lower part, the outer inclined B surface (28) inclines from the outer upper part to the inner lower part, the air inlet B ring (30) is uniformly provided with a plurality of air inlet B holes (31), when the inner fire cover is arranged on the inner fire cover seat, the inner surface (24) is clung to the outer inclined B surface (28), the inner B surface (25) is closely attached to the inner oblique B surface (27), and a proper gap is formed between the lower edge of the air inlet B surface (23) and the air inlet B ring (30), a plurality of outer air outlet B holes (18) are formed between the top B surface (19) and the outer upper edge of the outer inclined B surface (28), a plurality of inner air outlet B holes (20) are formed between the top B surface (19) and the inner upper edge of the inner inclined B surface (27).

8. The inner and outer fire assembly according to claim 6 or 7, wherein the inner fire ring (21), the inner fire cover seat and the inner fire cover are all made of stainless steel material.

9. The assembly according to claim 6 or 7, wherein the air inlet face (8) and the air inlet B face (23) are provided with annular grooves which are upwardly concave, the outer fire ring (6) is provided with an outer ring groove (34) and an inner ring groove (35), the inner fire ring (21) is provided with an outer ring groove (36) and an inner ring groove (37) and an inner side hole (26), the lower end of the outer seat outer wall (5) falls into the outer ring groove (34), the lower end of the outer seat inner wall (4) falls into the inner ring groove (35), the lower end of the inner seat outer wall (17) falls into the outer ring groove (36) and the lower end of the inner seat inner wall (16) falls into the inner ring groove (37) when the outer fire cover is seated on the inner fire ring (6).

10. The assembly according to claim 8, wherein the air intake surface (8) and the air intake surface B (23) are provided with annular grooves which are upwardly concave, the outer fire ring (6) is provided with an outer ring groove (34) and an inner ring groove (35), the inner fire ring (21) is provided with an outer ring groove B (36) and an inner ring groove B (37) and an inner side hole (26), the lower end of the outer seat outer wall (5) falls into the outer ring groove (34), the lower end of the outer seat inner wall (4) falls into the inner ring groove (35), the lower end of the inner seat outer wall (17) falls into the outer ring groove B (36), and the lower end of the inner seat inner wall (16) falls into the inner ring groove B (37) when the outer fire cover is seated on the inner fire ring (6).

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