CN214406049U - Gas distribution plate, combustor and gas stove - Google Patents

Abstract

The utility model discloses a divide gas dish, combustor and gas-cooker relates to combustor technical field, should divide the gas dish to be cyclic annular and include: an annular disc peripheral wall; the primary mixed gas through holes are arranged at intervals along the circumferential direction and are formed on the circumferential wall of the annular disc in a penetrating manner along the axial direction; and a plurality of secondary air holes arranged at intervals along the circumferential direction and formed in a penetrating manner along the radial directionThe circumferential wall of the annular disc; the secondary air holes and the primary mixed gas through holes are sequentially and alternately distributed along the circumferential direction, and the number of the secondary air holes or the primary mixed gas through holes is more than or equal to 10. The area of the cross section of the primary mixed gas through hole perpendicular to the self axial direction is more than or equal to 60mm²And is less than or equal to 120mm². The burner comprises a burner head, wherein the burner head is provided with a top wall vent which is axially communicated; and/or the inner peripheral wall of the inner ring seat is surrounded with a central air vent which is axially communicated. The utility model discloses a divide gas dish, combustor and gas-cooker can effectively improve combustion efficiency.

Description

Gas distribution plate, combustor and gas stove

Technical Field

The utility model relates to a combustor technical field specifically, relates to a gas tray, combustor and gas-cooker.

Background

In the related technology, in order to improve the firepower and the heating uniformity of the gas stove, a part of combustion stoves adopt a three-ring fire form for supplying fire, namely, three circles of flames of inner ring fire, middle ring fire and outer ring fire can be formed in sequence from inside to outside when a burner works; alternatively, the partial combustion cookers increase the heat load of the gas cookers by enlarging the gas nozzles. However, after the heat load of the gas cooker is increased, the heat efficiency of the gas cooker is reduced and the smoke emission is not up to the standard.

Disclosure of Invention

The utility model aims at providing a novel branch gas dish, combustor and gas-cooker, this branch gas dish, combustor and gas-cooker can effectively improve combustion efficiency.

In order to achieve the above object, the utility model provides a divide gas dish, this divide gas dish be cyclic annularly and include:

an annular disc peripheral wall;

the primary mixed gas through holes are arranged at intervals along the circumferential direction and are formed on the circumferential wall of the annular disc in a penetrating manner along the axial direction; and

and the secondary air holes are arranged at intervals along the circumferential direction and are formed on the circumferential wall of the annular disc in a penetrating manner along the radial direction, and the number of the secondary air holes is more than or equal to 10.

In some embodiments, the number of secondary air holes may be equal to or greater than 16.

In some casesIn the embodiment, the area of the cross section of the secondary air hole perpendicular to the self axial direction is more than or equal to 50mm²And is less than or equal to 120mm²。

In some embodiments, the secondary air holes may be round holes; or the secondary air holes can be waist-shaped holes, and the parallel waist edges of the waist-shaped holes are arranged along the axial direction of the air distribution disc.

In some embodiments, the outer side of the annular disc perimeter wall may extend upwardly to form a top annular perimeter wall for secure mounting with a fire lid.

In some embodiments, the number of the primary mixture through holes may be greater than or equal to 10, and the secondary air holes and the primary mixture through holes are sequentially and alternately distributed along the circumferential direction.

In some embodiments, the area of the cross section of the primary mixture through hole perpendicular to the self axial direction is greater than or equal to 60mm²And is less than or equal to 120mm²。

In some embodiments, the plurality of secondary air holes may be uniformly grouped in the circumferential direction to form a plurality of secondary air hole groups arranged at intervals in the circumferential direction and including at least two secondary air holes, the secondary air hole groups being sequentially and alternately distributed with the primary mixed air passing holes in the circumferential direction.

Correspondingly, the utility model also provides a combustor, this combustor includes:

the furnace end is provided with an outer ring distribution air passage; and

the outer ring gas distribution disc is according to the gas distribution disc, the bottom end cover of the circumferential wall of the ring-shaped disc is arranged above the outer ring distribution air passage, and the plurality of primary mixed gas through holes are communicated with the outer ring distribution air passage.

In some embodiments, the furnace end may include an inner ring seat, a middle ring seat and an outer ring seat, which are correspondingly provided with an inner ring distribution air passage, a middle ring distribution air passage and an outer ring distribution air passage and are sequentially sleeved, the inner ring seat includes an inner ring seat inner peripheral wall and an inner ring seat outer peripheral wall which define the inner ring distribution air passage, the middle ring seat includes a middle ring seat inner peripheral wall and a middle ring seat outer peripheral wall which define the middle ring distribution air passage, the outer ring seat includes an outer ring seat inner peripheral wall and an outer ring seat outer peripheral wall which define the outer ring distribution air passage, wherein,

a connecting top wall is arranged between the peripheral edge part of the top end of the peripheral wall of the middle ring seat and the peripheral edge part of the top end of the peripheral wall of the outer ring seat, and the connecting top wall is provided with a top wall vent hole which is axially communicated; and/or the inner peripheral wall of the inner ring seat is surrounded with a central air vent which is axially communicated.

In some embodiments, the burner may further include an inner ring ejection tube and an outer ring ejection tube, the middle ring distribution airway is communicated with the outer ring distribution airway through a middle and outer ring connecting airway, the inner ring ejection tube is communicated with the inner ring distribution airway, and the outer ring ejection tube is sequentially communicated with the outer ring distribution airway, the middle and outer ring connecting airway, and the middle ring distribution airway. In addition, the application also provides a gas stove which is characterized by comprising the burner.

The utility model discloses a gas distribution plate includes cyclic annular dish perisporium, a plurality of mist via holes and a plurality of overgrate air hole, a plurality of mist via holes form on cyclic annular dish perisporium along circumference interval arrangement and along the axial with running through, a plurality of overgrate air holes form on cyclic annular dish perisporium along circumference interval arrangement and along radially running through, the quantity more than or equal to 10 of overgrate air hole, thus, the quantity in overgrate air hole has increased, correspondingly, the hole flow area in single overgrate air hole reduces, the vortex effect that the overgrate air formed diminishes, the inlet flow line is more even, the air inflow reduces, the flow resistance is little, the air inflow will more and then be favorable to improving the thermal efficiency and the heat load of combustor.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

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

fig. 1 shows a schematic structural view of a gas distribution plate according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of the gas distribution plate of FIG. 1 from another perspective;

fig. 3 shows a schematic structural view of a gas distribution plate according to a second embodiment of the present invention;

FIG. 4 is a schematic structural view of the air distributor in FIG. 3 from another perspective;

fig. 5 shows a schematic structural view of a burner according to an embodiment of the present invention;

FIGS. 6 and 7 are exploded views of the installation of the burner of FIG. 5 from different perspectives, respectively;

fig. 8 is a schematic structural view of the burner of fig. 5;

FIGS. 9 and 11 are sectional views of the burner of FIG. 5 in different positions, respectively;

fig. 10 is an exploded view of fig. 9.

Description of the reference numerals

100 fire cover 200 burner

201 inner ring seat 2011 inner ring distribution airway

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

2015 inner ring seat bottom wall 202 middle ring seat

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

2023 outer annular seat peripheral wall 203 outer annular seat

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

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

204 inner ring ejector pipe 205 outer ring ejector pipe

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

2061 communicating passage inlet 207 connecting the top wall

1000 combustor 300 gas distribution plate

301 annular disk peripheral wall 3011 top annular peripheral wall

Radial outer end of 302 primary mixed gas through hole 3021 mixed gas through hole

3022 the mixture via hole has a secondary air hole 303 at the radial inner end

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The following describes a gas distribution plate 300, a burner 1000 and a gas range according to the present invention, which can effectively improve combustion efficiency, with reference to the accompanying drawings.

In the related technology, in order to improve the firepower and the heating uniformity of the gas stove, a part of combustion stoves adopt a three-ring fire form for supplying fire, namely, three circles of flames of inner ring fire, middle ring fire and outer ring fire can be formed in sequence from inside to outside when a burner works; alternatively, the partial combustion cookers increase the heat load of the gas cookers by enlarging the gas nozzles. However, through continuous research and experiments, the inventor of the present application finds that the existing gas distribution plate is difficult to meet the combustor with high heat load and high combustion efficiency. This is because, after the heat load of the gas range is increased, the combustion condition is deteriorated due to insufficient supplement of secondary air, so that the heat efficiency is reduced and the smoke emission is not up to the standard. The secondary air supplement is insufficient, one is that the total supplement quantity of the secondary air is insufficient, so that the proportion of the total quantity of the air to the total quantity of the fuel gas is abnormal, and the combustion condition is deteriorated due to oxygen deficiency, so that the heat efficiency is reduced and the smoke emission is not up to the standard; the other is that the mixing ratio of the secondary air and the fuel gas is abnormal due to the uneven or insufficient mixing of the secondary air and the fuel gas, so that the combustion condition is deteriorated, the heat efficiency is reduced, and the smoke emission does not reach the standard.

Specifically, because the number of secondary air holes of the existing air distribution plate is small, and correspondingly, the hole flow area of the secondary air holes is large, the secondary air enters a combustion area through the secondary air holes and then diffuses back to two sides of the holes to form a large vortex area, which can cause the air intake resistance of the secondary air to be increased and influence the air intake amount; in addition, after air intake, the distribution of the primary mixed gas and the secondary air is uneven, which affects the mixing ratio, and thus, the combustion condition is deteriorated, which results in the decrease of the thermal efficiency and the failure of the standard of the smoke emission.

In view of the above, the inventor of the present application provides a novel air distributor 300, the air distributor 300 is annular and includes an annular disk peripheral wall 301, a plurality of primary air mixture holes 302 and a plurality of secondary air holes 303, the plurality of primary air mixture holes 302 are circumferentially spaced and axially penetratingly formed on the annular disk peripheral wall 301, the plurality of secondary air holes 303 are circumferentially spaced and radially penetratingly formed on the annular disk peripheral wall 301, and the number of secondary air holes 303 is greater than or equal to 10. So, the quantity of secondary air hole 303 is many, and correspondingly, the hole flow area of single secondary air hole 303 reduces, and the vortex effect that secondary air formed is also less, and the air inlet flow line is more even, and the air intake resistance reduces, and the flow resistance is little, and the air input will more and then be favorable to improving the thermal efficiency and the heat load of combustor.

The gas distributor 300 may be circular, rectangular, or other annular, and may be matched with the burner 200 and the burner cap 100 of the burner 1000. The number of secondary air holes 303 is 10 or more, and may be, for example, 10, 12, 15 or more. The shapes of the secondary air holes 303 and the primary mixture passage holes 302 may be various, for example, circular holes, raceway holes, or other shaped holes, and the present application is not limited thereto.

Optionally, the number of secondary air holes 303 is equal to or greater than 16. As shown in fig. 1 to 4, the air distributor 300 has a circular ring shape, and the number of the secondary air holes 303 is 20. The larger the number of the secondary air holes 303, the smaller the hole flow area of a single secondary air hole 303, the more uniform the distribution of the secondary air, the smaller the vortex effect formed by the secondary air, the more uniform the intake flow line, and the smaller the intake resistance and flow resistance.

Alternatively, when the area of the cross section of the secondary air hole 303 perpendicular to the self axial direction is less than or equal to 120mm²During the process, the distribution of secondary air is more uniform, the formed vortex effect is smaller, the air inlet flow line is more uniform, the air inlet resistance and the flow resistance are smaller, the air inlet amount is increased, and the improvement is further facilitatedThe combustion efficiency; the area of the cross section of the secondary air hole 303 perpendicular to the axial direction thereof may be set to 50mm or more²Thus, the sufficient air inflow and the air inflow fluency of the secondary air hole 303 can be ensured.

Alternatively, as shown in fig. 1 to 4, the secondary air hole 303 may be a circular hole, that is, the cross-sectional shape of the secondary air hole 303 perpendicular to the axial direction thereof may be a circle, so that the air distributor 300 is more convenient to process and the processing difficulty is reduced. Alternatively, the secondary air holes 303 may be waist-shaped holes (not shown in the drawings) and the parallel waist edges of the waist-shaped holes are arranged along the axial direction of the air distribution plate 300, that is, the cross-sectional shape of the secondary air holes 303 perpendicular to the axial direction thereof may be waist-shaped. When the area of the cross section of the secondary air hole 303 perpendicular to the self axial direction is fixed, if the axial size of the waist-shaped hole is increased, correspondingly, the circumferential size of the waist-shaped hole is reduced, so that more secondary air holes 303 can be arranged at intervals along the circumferential direction, the vortex effect of air intake is further weakened, the total air intake amount of secondary air is improved, and further the combustion efficiency can be improved.

Alternatively, the outer side of the annular disc peripheral wall 301 extends upward to form a top end annular peripheral wall 3011, the top end annular peripheral wall 3011 being for fixed mounting with the fire lid 100. As shown in fig. 1 and 3, the top edge of the top end annular peripheral wall 3011 is formed with an annular boss portion to be fitted in a position-limited manner with the fire lid 100.

In some embodiments, the number of the primary mixture through holes 302 may be greater than or equal to 10, and the secondary air holes 303 and the primary mixture through holes 30 are sequentially and alternately distributed in the circumferential direction. So, the quantity of a gas mixture via hole 302 is many, and correspondingly, the hole flow area of a single gas mixture via hole 302 reduces, and the vortex effect that a gas mixture via hole 302 formed is also less, and the admission flow line is more even, and the admission resistance reduces, and the flow resistance is little, and the air input will be more and then be favorable to improving the heat load of combustor. More importantly, the secondary air holes 303 and the primary mixed gas through holes 30 are sequentially and alternately distributed along the circumferential direction, so that the secondary air and the primary mixed gas are distributed more uniformly, and the combustion efficiency is better. The number of the first mixture passing holes 302 is greater than or equal to 10, and may be, for example, 10, 12, 15, or more. As shown in fig. 1 and 2, the number of the primary air mixture holes 302 and the secondary air holes 303 is 20 and are alternately distributed in sequence. The more the number of the primary mixed gas through holes 302 is, and correspondingly, the smaller the hole flow area of a single primary mixed gas through hole 302 is, the more uniform the distribution of the primary mixed gas is, the smaller the formed vortex effect is, the more uniform the gas inlet flow line is, and the smaller the gas inlet resistance and the flow resistance are.

Optionally, the area of the cross section of the primary mixture through hole 302 perpendicular to the self axial direction is less than or equal to 120mm²During the process, the distribution of the primary mixed gas is more uniform, the formed vortex effect is smaller, the gas inlet flow line is more uniform, the gas inlet resistance and the flow resistance are smaller, the gas inlet amount is increased, and the heat efficiency and the heat load are further improved; the area of the cross section of the primary mixed gas passing hole 302 perpendicular to the axial direction thereof is set to be 60mm or more²Thus, the sufficient air inflow and the air inflow fluency of the primary air mixture passing hole 302 can be ensured.

Optionally, the aperture width of the mixture via radial outer end 3021 of the primary mixture via 302 is greater than the aperture width of the mixture via radial inner end 3022 of the primary mixture via 302. As shown in fig. 1 and 2, the primary mixture passage hole 302 has a shape of a kidney-shaped hole having a large end and a small end. Thus, the primary mixed gas passing hole 302 is matched with the annular wall shape of the annular disk peripheral wall 301, the total intake area of the plurality of primary mixed gas passing holes 302 can be increased as much as possible, the total intake amount of the primary mixed gas is increased, and the heat load can be further increased. Here, a position relatively close to the center of the gas distribution plate 300 is defined as "inner", and a position relatively far from the center of the gas distribution plate 300 is defined as "outer". The primary mixed gas is a mixed gas of fuel gas and primary air.

In other embodiments, the plurality of secondary air holes 303 may be evenly grouped in the circumferential direction to form a plurality of secondary air hole groups that are circumferentially spaced apart and that include at least two secondary air holes 303, the secondary air hole groups alternating with the primary mixed air via holes 302 in the circumferential direction. Wherein, the plurality of secondary air holes 303 can be uniformly divided into 2 groups, 3 groups, 4 groups, 5 groups or more; the uniform grouping may be an equal number of groupings or an approximate number of groupings, i.e., the number of secondary air holes 303 in each secondary air hole set may be the same, or the number of secondary air holes 303 in multiple secondary air hole sets may differ by a small amount, such as by one or two, etc. The number of secondary air holes 303 in each secondary air hole group may be 2, 3, 4, 5, or more. As shown in fig. 3 and 4, the air distributor 300 is provided with 16 secondary air holes 303, and the 16 secondary air holes 303 are uniformly grouped in the circumferential direction to form 4 secondary air hole groups including 4 secondary air holes 303 arranged at intervals in the circumferential direction. Compared with the gas distribution plate 300 of the embodiment shown in fig. 1 and 2, the gas distribution plate 300 of the embodiment has a reduced number of primary mixed gas passing holes, which facilitates the processing of the gas distribution plate 300 and better balances the optimization performance and the production cost of the gas distribution plate 300.

Correspondingly, as shown in fig. 5 to 11, the present application further provides a burner 1000, the burner 1000 includes a burner 200 and an outer ring air distribution plate, the burner 200 is provided with an outer ring air distribution duct 2031, the outer ring air distribution plate is the air distribution plate 300, a bottom end of a circumferential wall 301 of the annular plate is covered above the outer ring air distribution duct 2031, and a plurality of primary mixed air passing holes 302 are communicated with the outer ring air distribution duct 2031. Since the gas burner 1000 of the present application adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

Optionally, as shown in fig. 8, the burner 200 may include an inner ring seat 201, a middle ring seat 202, and an outer ring seat 203, which are sequentially sleeved, wherein the inner ring seat 201, the middle ring seat 202, and the outer ring seat 203 are correspondingly provided with an inner ring distribution air passage 2011, a middle ring distribution air passage 2021, and an outer ring distribution air passage 2031. The outer ring seat 203, the middle ring seat 202 and the inner ring seat 201 are respectively annular and are sequentially sleeved from outside to inside, and correspondingly, the outer ring distribution air passage 2031, the middle ring distribution air passage 2021 and the inner ring distribution air passage 2011 are also sequentially sleeved from outside to inside. That is, three distribution air passages of the burner 200 can correspondingly form three-ring flames, which is beneficial to improving the heat load of the burner and the combustor and enables the flames to be more uniformly dispersed on the whole fire plane. The burner 1000 with the three-ring flame adopts the gas distribution plate 300, so that the comprehensive performance of the burner 1000 is better, and better cooking experience and more environment-friendly life style can be brought to users.

Alternatively, the outer ring seat 203 may include an outer ring seat inner peripheral wall 2032, an outer ring seat outer peripheral wall 2033, and an outer ring seat bottom wall 2034 that define an outer ring distribution airway 2031, the middle ring seat 202 may include a middle ring seat inner peripheral wall, a middle ring seat outer peripheral wall 2023, and a middle ring seat bottom wall 2022 that define a middle ring distribution airway, and the inner ring seat 201 may include an inner ring seat inner peripheral wall 2012, an inner ring seat outer peripheral wall 2013, and an inner ring seat bottom wall 2015 that define an inner ring distribution airway 2011. The top surfaces of the outer ring base bottom wall 2034, the middle ring base bottom wall 2022 and the inner ring base bottom wall 2015 are all formed into inclined ramp surfaces along the airflow direction, which is favorable for reducing the flow resistance of primary mixed gas, the gas outlet is smoother, and the stability of flame combustion is better. Wherein, the primary mixed gas is the mixed gas of fuel gas and primary air.

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

Alternatively, a connecting top wall 207 may be provided between the top end peripheral edge of the middle ring base outer peripheral wall 2023 and the top end peripheral edge of the outer ring base inner peripheral wall 2032, and the connecting top wall 207 may be provided with a top wall vent (not shown) that axially penetrates therethrough. In this way, secondary air can be supplemented to the central combustion region axially and upwardly between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 through the top wall vent, so that the combustion of the central combustion region is more sufficient, the thermal efficiency is higher, and the emission of harmful gases can be reduced. Wherein, the roof air vent can include a plurality ofly along circumference interval arrangement, so, secondary air's distribution can be comparatively even, and the vortex effect of formation is also less, and the admission flow line is more even, and intake resistance and flow resistance are less, and the air input increases, and then is favorable to improving combustion efficiency.

Optionally, the inner ring seat inner peripheral wall 2012 can encircle and be formed with the central blow vent (not shown in the figure) that the axial is link up, like this, accessible central blow vent upwards supplements the secondary air to central combustion area along the axial for central combustion area's burning is more abundant, and the emission of carbon monoxide is lower, and combustion efficiency is higher, and the gas is when the burning simultaneously, and central combustion area's air current is stable, thereby the burning is also stable, has solved the inner ring and has left flame flameout scheduling problem. Similarly, the central air vent also can divide into the less air passing port of a plurality of cross-sectional areas through dividing the air grid for example, so, secondary air's distribution can be comparatively even, and the vortex effect of formation is also less, and the admission flow line is more even, and intake resistance and flow resistance are less, and the air input increases, and then is favorable to improving combustion efficiency.

Optionally, the furnace end 200 may further include an inner ring ejection pipe 204 and an outer ring ejection pipe 205, the middle ring distribution air passage 2021 is communicated with the outer ring distribution air passage 2031 through the middle and outer ring communication air passage 206, the inner ring ejection pipe 204 is communicated with the inner ring distribution air passage 2011, and the outer ring ejection pipe 205 is sequentially communicated with the outer ring distribution air passage 2031, the middle and outer ring communication air passage 206, and the middle ring distribution air passage 2021. The inner ring ejector pipe 204 is communicated with the inner ring distribution air passage 2011 to provide primary mixed gas for the inner ring distribution air passage 2011, the middle ring distribution air passage 2021 is communicated with the outer ring distribution air passage 2031 through the middle and outer ring communication air passage 206, and the outer ring ejector pipe 205 is communicated with the outer ring distribution air passage 2031, the middle and outer ring connection air passage 206 and the middle ring distribution air passage 2021 in sequence to provide primary mixed gas for the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 in sequence. Because the flame burns closer to the central area of the burner, the higher the thermal efficiency, the burner 200 of the present application introduces the primary mixed gas of the outer ring distribution gas passage 2031 into the middle ring distribution gas passage 2021 relatively close to the central combustion area, which is beneficial to improving the overall combustion efficiency of the burner.

In addition, the furnace end 200 of this application only need two to draw and penetrate the pipe can form three ring fire for three distribution air flue air feed, not only can make furnace end 200's structure simpler, can also reduce the quantity that sets up of drawing production parts such as pipe and nozzle, has saved manufacturing cost greatly and the maintenance in the later stage of being more convenient for. And, the furnace end 200 of this application only need two to draw and penetrate the pipe and can give three distribution air flue air feed, and valve regulation and control strategy and control logic also can be simpler.

Further, as shown in fig. 8 and 11, the inner ring base outer peripheral wall 2013 and the intermediate ring base inner peripheral wall may be formed as a common intermediate inner ring common peripheral wall. Thus, the middle ring distribution air passage 2021 can be arranged closer to the inner ring distribution air passage 2011, the flame of the middle ring distribution air passage 2021 can be combusted closer to the central area, and the thermal efficiency is higher. And under the condition of ensuring the requirements of high heat load and uniform fire of the inner ring combustion area during big fire cooking, the inner ring gas nozzle can be made as small as possible, thereby providing smaller firepower during small fire cooking. In addition, the outer peripheral wall 2013 of the inner ring seat and the inner peripheral wall of the middle ring seat form a shared common peripheral wall of the middle ring, so that the wall body material of the furnace end can be reduced, the production cost of the furnace end is reduced, and the structure of the furnace end can be simpler and more compact.

Alternatively, the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021 may communicate with each other through an intermediate communication passage, and the arrangement form and the arrangement position of the intermediate communication passage 206 may be various, for example, the intermediate communication passage 206 may be a curved passage and both ends of the curved passage are respectively connected to the outer ring base bottom wall 2034 and the middle ring base bottom wall 2022 to correspondingly communicate with the outer ring distribution air passage 2031 and the middle ring distribution air passage 2021; alternatively, the intermediate communication passage may be a curved passage, and both ends of the intermediate communication passage are respectively connected to the outer ring seat bottom wall 2034 and the intermediate ring seat outer peripheral wall 2023 to be correspondingly communicated with the outer ring distribution air passage 2031 and the intermediate ring distribution air passage 2021, and the like. Alternatively, as shown in fig. 11, the middle communication channel may be a middle and outer ring connecting air channel 206 disposed between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032, and the middle and outer ring connecting air channel 206 is a straight channel, so that the structure of the burner 200 is simpler and more reasonable, and the middle and outer ring connecting air channel 206 may be a straight channel to shorten the channel length and reduce the flow resistance as much as possible. In addition, the middle and outer ring connecting air ducts 206 in fig. 11 are only shown in one, but the application is not limited thereto, and the middle and outer ring connecting air ducts 206 may also be multiple and arranged between the middle ring base outer circumferential wall 2023 and the outer ring base inner circumferential wall 2032 at intervals in the circumferential direction.

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

Specifically, as shown in fig. 8 and 11, the flow path of the primary mixed gas of the outer ring injection pipe 205 is: the primary mixed gas of the outer ring injection pipe 205 enters the outer ring distribution airway 2031 from the outer ring injection pipe gas outlet 2051, and part of the primary mixed gas entering the outer ring distribution airway 2031 flows into the left and right channels of the outer ring distribution airway 2031 and uniformly supplies gas to the fire cover upwards through the plurality of primary mixed gas through holes 302 of the gas distribution plate 300; another part of the primary mixed gas entering the outer ring distribution gas passage 2031 flows to the middle ring distribution gas passage 2021 through the middle outer ring connecting gas passage 206 and supplies gas upwards to the fire lid. The flow path of the primary mixed gas of the inner ring injection pipe 204 is as follows: the primary mixed gas of the inner ring injection pipe 204 flows to the inner ring distribution air passage 2011 and supplies gas to the fire lid. In addition, the present application also proposes a gas range, which includes the burner 1000 described above. Similarly, the specific structure of the burner 1000 refers to the above embodiments, and since the gas stove of the present application adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

To sum up, the utility model provides a divide gas dish 300, combustor 1000 and gas-cooker, this divide gas dish 300, combustor 1000 and gas-cooker can effectively improve combustion efficiency, and rational in infrastructure compactness, and the volume is less, and it is little to occupy kitchen space, is favorable to promoting to the user in little room.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

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

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (12)

1. A gas distribution disk, characterized in that the gas distribution disk is annular and comprises:

an annular disc peripheral wall;

a plurality of primary mixed gas through holes which are arranged at intervals along the circumferential direction and are formed on the circumferential wall of the annular disc in a penetrating manner along the axial direction; and

and the secondary air holes are arranged at intervals along the circumferential direction and are formed on the circumferential wall of the annular disc in a penetrating manner along the radial direction, and the number of the secondary air holes is more than or equal to 10.

2. The gas distributor plate according to claim 1, wherein the number of secondary air holes is 16 or more.

3. The gas distribution plate according to claim 1, wherein the area of the cross section of the secondary air hole perpendicular to the axial direction of the secondary air hole is 50mm or more²And is less than or equal to 120mm²。

4. The gas distribution plate of claim 1, wherein the secondary air holes are round holes; or the secondary air holes are waist-shaped holes, and the parallel waist edges of the waist-shaped holes are arranged along the axial direction of the air distribution disc.

5. The gas distribution plate of claim 1, wherein the outer side of the annular plate perimeter wall extends upward to form a top end annular perimeter wall for secure mounting with a fire lid.

6. The air distribution disc according to any one of claims 1 to 5, wherein the number of the primary mixed air through holes is greater than or equal to 10, and the secondary air holes and the primary mixed air through holes are sequentially and alternately distributed along the circumferential direction.

7. The gas distribution plate according to claim 6, wherein the area of the cross section of the primary mixed gas through hole perpendicular to the axial direction of the primary mixed gas through hole is greater than or equal to 60mm²And is less than or equal to 120mm²。

8. The air distribution plate according to any one of claims 1 to 5, wherein the plurality of secondary air holes are uniformly grouped in the circumferential direction to form a plurality of secondary air hole groups which are arranged at intervals in the circumferential direction and at least comprise two secondary air holes, and the secondary air hole groups and the primary mixed air through holes are sequentially and alternately distributed in the circumferential direction.

9. A burner, characterized in that it comprises:

the furnace end is provided with an outer ring distribution air passage; and

the outer ring gas distribution disc according to any one of claims 1 to 8, wherein the bottom end of the circumferential wall of the ring-shaped disc is covered above the outer ring distribution air passage, and the primary mixed gas through holes are communicated with the outer ring distribution air passage.

10. The burner of claim 9, wherein the burner comprises an inner ring seat, a middle ring seat and an outer ring seat, wherein the inner ring seat, the middle ring seat and the outer ring seat are respectively provided with an inner ring distribution air passage, a middle ring distribution air passage and an outer ring distribution air passage and are sequentially sleeved, the inner ring seat comprises an inner ring seat inner peripheral wall and an inner ring seat outer peripheral wall which define the inner ring distribution air passage, the middle ring seat comprises a middle ring seat inner peripheral wall and a middle ring seat outer peripheral wall which define the middle ring distribution air passage, the outer ring seat comprises an outer ring seat inner peripheral wall and an outer ring seat outer peripheral wall which define the outer ring distribution air passage, wherein,

a connecting top wall is arranged between the peripheral edge part of the top end of the peripheral wall of the middle ring seat and the peripheral edge part of the top end of the peripheral wall of the outer ring seat, and the connecting top wall is provided with a top wall vent hole which is axially communicated; and/or the inner circumferential wall of the inner ring seat is provided with a central vent hole which is axially communicated in a surrounding way.

11. The burner of claim 10, wherein the burner further comprises an inner ring injection pipe and an outer ring injection pipe, the middle ring distribution air passage is communicated with the outer ring distribution air passage through a middle and outer ring connecting air passage, the inner ring injection pipe is communicated with the inner ring distribution air passage, and the outer ring injection pipe is sequentially communicated with the outer ring distribution air passage, the middle and outer ring connecting air passage and the middle ring distribution air passage.

12. A gas burner characterized in that it comprises a burner according to any one of claims 9 to 11.

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