CN212319706U

CN212319706U - Inner ring fire cover, combustor and gas stove

Info

Publication number: CN212319706U
Application number: CN202021294500.8U
Authority: CN
Inventors: 孟甜; 唐松茂; 张炳卫
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-01-08
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses an inner ring fire lid, combustor and gas cooking utensils, wherein, the inner ring fire lid includes: a top cover; the top cover is arranged on the outer ring wall; the inner ring wall is arranged inside the outer ring wall, and a central cavity is formed in the middle of the inner ring wall; the gas burner comprises a connecting plate, one end of the connecting plate is connected with one end, close to the top cover, of the inner ring wall, the other end of the connecting plate is connected with the outer ring wall, the top cover, the outer ring wall and the connecting plate are enclosed to form a first inner ring gas cavity communicated with the central cavity, a first inner ring fire hole communicated with the first inner ring gas cavity is formed in the top cover, a second inner ring fire hole communicated with the first inner ring gas cavity is formed in the outer ring wall, a second inner ring gas cavity is formed in the outer ring wall, the connecting plate and the inner ring wall in an enclosing manner, and a third inner ring fire hole communicated with the second inner ring gas cavity is formed in the outer ring wall. The utility model discloses can realize minimum fire state stable combustion.

Description

Inner ring fire cover, combustor and gas stove

Technical Field

The utility model relates to a kitchen appliance field, in particular to inner ring fire lid, combustor and gas cooking utensils.

Background

The inner ring fire cover of the three-ring burner is used for forming a central flame and a middle ring fire, and in order to ensure that the gas supply of the middle ring fire is sufficient, the gas load of the inner ring fire cover can be kept in a relatively high state. When the burner is in a minimum fire combustion state, the gas load of the central flame is high, so that the central flame is unstable, the problem of flame separation is easy to occur, and when the gas load of the central flame is reduced, the gas supply of the middle ring fire is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing an inner ring fire lid, combustor and gas cooking utensils, aim at improving the big problem of gas load under the minimum fire combustion state of current inner ring fire lid.

In order to achieve the above object, the utility model provides an inner ring fire lid, include:

a top cover;

the top cover is arranged on the outer ring wall;

the inner ring wall is arranged inside the outer ring wall, and a central cavity is formed in the middle of the inner ring wall; and

the gas burner comprises a connecting plate, one end of the connecting plate is connected with one end, close to the top cover, of the inner ring wall, the other end of the connecting plate is connected with the outer ring wall, the top cover, the outer ring wall and the connecting plate are enclosed to form a first inner ring gas cavity communicated with the central cavity, a first inner ring fire hole communicated with the first inner ring gas cavity is formed in the top cover, a second inner ring fire hole communicated with the first inner ring gas cavity is formed in the outer ring wall, a second inner ring gas cavity is formed in the outer ring wall, the connecting plate and the inner ring wall in an enclosing manner, and a third inner ring fire hole communicated with the second inner ring gas cavity is formed in the outer ring wall.

Optionally, a flame stabilizing hole communicated with the second inner ring gas cavity is formed in the outer ring wall.

Optionally, the outer circumference of the outer ring wall is provided with a flame stabilizing groove;

one end, far away from the second inner ring gas cavity, of the flame stabilizing hole is communicated with the flame stabilizing groove, and/or the flame stabilizing groove is provided with a through hole communicated with the inside of the third inner ring gas hole.

Optionally, the inner ring fire cover further comprises:

the fixed net is arranged on one side, back to the first inner ring gas cavity, of the top cover; and

and the infrared combustion plate is arranged between the fixed net and the top cover.

Optionally, one end of the outer annular wall, which is close to the top cover, is provided with a step surface, and the outer periphery of the top cover is movably mounted on the step surface.

Optionally, a flow guide wall is arranged between the inner annular wall and the connecting plate, one end of the flow guide wall is connected with the inner annular wall, and the other end of the flow guide wall is connected with one end of the connecting plate, which is far away from the outer annular wall;

a first flow guide inclined plane used for guiding the airflow of the central cavity to the direction of the second inner ring fire hole is formed on the surface of one side, facing the first inner ring gas cavity, of the flow guide wall; and/or a second flow guide inclined plane used for guiding the airflow of the second inner ring gas cavity to the third inner ring fire hole direction is formed on the surface of one side, facing the second inner ring gas cavity, of the flow guide wall.

The utility model discloses on the basis of above-mentioned inner ring fire lid, provide a combustor, include as above-mentioned inner ring fire lid and gas distribution plate, gas distribution plate includes:

the outer disc body is provided with an outer ring gas cavity, the outer disc body is provided with an outer ring fire cover, and the outer ring fire cover is provided with an outer ring fire hole communicated with the outer ring gas cavity; and

the inner disk body is covered by the inner ring fire cover and arranged on the inner disk body, the outer disk body is arranged outside the inner disk body, the inner disk body is provided with a first air inlet and a second air inlet, the second inner ring gas cavity is communicated with the first air inlet, the central cavity is communicated with the second air inlet, and the outer ring gas cavity is communicated with the first air inlet.

Optionally, the inside of interior disk body is the cavity setting, interior disk body is equipped with annular baffle, be formed with first transition gas chamber between the inner wall of annular baffle and interior disk body, be equipped with the intercommunication on the interior disk body first transition gas chamber with the through-hole in the second inner ring gas chamber of inner ring fire lid, first air inlet be formed with on the interior disk body and with first transition gas chamber is linked together, annular baffle inside be formed with be used for the intercommunication the second air inlet with the second transition gas chamber in center chamber.

Optionally, the gas distribution plate further comprises:

the supporting part is arranged between the inner disc body and the outer disc body, and an airflow channel communicated with the first transition gas cavity and the outer ring gas cavity is formed in the supporting part;

optionally, the supporting portions are arranged at intervals, and a secondary air supply port for supplying secondary air to the inner ring fire cover is formed between adjacent supporting portions.

Optionally, one of the inner disc body and the outer ring wall of the inner ring fire cover is provided with a protruding part, the other is provided with a limiting groove, and the protruding part is embedded into the limiting groove.

The utility model provides a gas cooking utensils on the basis of above-mentioned inner ring fire lid, gas cooking utensils include as above-mentioned the combustor.

The technical proposal of the utility model realizes the input of two gas streams of the inner ring fire cover by forming a first inner ring gas cavity and a second inner ring gas cavity which are mutually independent inside the inner ring fire cover; the first inner ring fire hole and the second inner ring fire hole are communicated with the first inner ring gas cavity, and the second inner ring fire hole shares the gas load of the first inner ring fire hole, so that the first inner ring fire hole can be stably combusted in a minimum fire state; through third inner ring burner port intercommunication second inner ring gas chamber, the well fire that makes third inner ring burner port form has independent gas supply, and then under the prerequisite of the gas load of adjusting first inner ring burner port, reduces the influence to the well ring fire, realizes central flame and the independent regulation of well ring fire.

Drawings

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

FIG. 1 is a schematic structural view of an embodiment of the inner ring fire cover of the present invention;

FIG. 2 is a schematic view of the inner structure of the inner ring fire cover in FIG. 1;

FIG. 3 is a schematic structural view of an embodiment of the connection state of the inner ring fire cover and the fixed net of the present invention;

FIG. 4 is a schematic view of the inner structure of the inner ring fire cover in FIG. 3;

fig. 5 is a schematic structural diagram of an embodiment of the burner of the present invention;

FIG. 6 is a schematic view of the internal structure of the burner of FIG. 5;

FIG. 7 is a schematic structural view of an embodiment of the present invention showing the state of the air distributor being engaged with the outer ring fire cover;

FIG. 8 is a top view of FIG. 7;

fig. 9 is a sectional view taken along line a-a in fig. 8.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Inner ring fire cover	11	Top cover
111	First inner ring fire hole	112	Fixing net
				113	Infrared combustion plate	12	Inner ring wall
121	Central cavity	13	Outer annular wall
				131	Second inner ring fire hole	132	Third inner ring fire hole
133	Flame stabilizing hole	134	Flame stabilizing groove
				135	First inner ring gas chamber	136	Second inner ring gas chamber
137	Step surface	138	Limiting groove
				14	Connecting plate	141	Flow guide wall
142	First flow guiding inclined plane	143	Second diversion inclined plane
				20	Outer ring fire cover	21	Outer ring fire hole
30	Air distribution plate	31	Outer dish body
				311	Outer ring gas chamber	32	Supporting part
321	Air flow channel	33	Inner tray body
				331	Annular partition plate	332	First transition gas chamber
333	Second transition gas chamber	334	Projecting part
				335	Through hole	40	First air inlet
50	Second air inlet

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and 2, the present invention provides an inner ring fire cover, including: a top cover 11; the outer annular wall 13, the said top cover 11 locates on the said outer annular wall 13; an inner annular wall 12 arranged inside the outer annular wall 13, wherein a central cavity 121 is formed in the middle of the inner annular wall 12; and the connecting plate 14 is arranged between the inner annular wall 12 and the outer annular wall 13, one end of the connecting plate 14 is connected with one end of the inner annular wall 12 close to the top cover 11, the other end of the connecting plate 14 is connected with the outer annular wall 13, the top cover 11, the outer annular wall 13 and the connecting plate 14 enclose to form a first inner annular gas cavity 135 communicated with the central cavity 121, the top cover 11 is provided with a first inner annular fire hole 111 communicated with the first inner annular gas cavity 135, the outer annular wall 13 is provided with a second inner annular fire hole 131 communicated with the first inner annular gas cavity 135, the outer annular wall 13, the connecting plate 14 and the inner annular wall 12 enclose to form a second inner annular gas cavity 136, and the outer annular wall 13 is provided with a third inner annular fire hole 132 communicated with the second inner annular gas cavity 136.

A gap is formed between the inner wall of the outer annular wall 13 and the outer wall of the inner annular wall 12, the connecting plate 14 is arranged inside the outer annular wall 13, the outer periphery of the connecting plate 14 is connected with the inner wall of the outer annular wall 13, and one end of the connecting plate 14 far away from the outer annular wall 13 is connected with the inner annular wall 12, so that the connecting plate 14 divides the inner cavity of the outer annular wall 13 into a first inner annular gas cavity 135 close to the top cover 11 and a second inner annular gas cavity 136 far away from the top cover 11. The first inner ring combustion gas cavity 135 is connected with the outside of the inner ring fire cover through the central cavity 121 formed by the inner ring wall 12, and the first inner ring combustion gas cavity 135 and the second inner ring combustion gas cavity 136 have mutually independent combustion gas input passages.

The first inner ring fire hole 111 is communicated with the first inner ring gas cavity 135 to form a central flame, and the second inner ring fire hole 131 and the third inner ring fire hole 132 are respectively communicated with the first inner ring gas cavity 135 and the second inner ring gas cavity 136 to form a middle ring fire.

Because the first inner ring fire hole 111 and the second inner ring fire hole 131 are communicated with the first inner ring gas cavity 135, the gas input into the first inner ring gas cavity 135 is divided into two parts to be output, and the second inner ring fire hole 131 can share the gas load of the first inner ring fire hole 111, so that the gas load of the first inner ring fire hole 111 is reduced, and further, the central flame formed by the first inner ring fire hole 111 is more stable, and can have smaller and stable flame in a minimum flame combustion state, and can prevent the occurrence of flame-out. Since the gas load of the first inner ring fire hole 111 can be relatively reduced, the first inner ring fire hole 111 can be made smaller accordingly, so that the first inner ring fire hole 111 can form a smaller central flame. By reducing the gas load of the first inner ring fire hole 111, the length of the flame formed by the first inner ring fire hole 111 is reduced, and the outer flame of the flame formed by the first inner ring fire hole 111 can act on the bottom surface of the pot more, so as to improve the heating efficiency.

The second inner ring fire hole 131 is disposed near the top cover 11, and when the gas load of the first inner ring gas chamber 135 is reduced, the gas load of the second inner ring fire hole 131 is also relatively reduced, so that the flame near the center of the inner ring fire cover 10 is reduced. Since the third inner ring fire holes 132 have airflow inputs completely independent from the second inner ring fire holes 131, flames formed by the third inner ring fire holes 132 can be increased while flames formed by the second inner ring fire holes 131 are decreased, so that middle ring fire is maintained in a preset state, and controllability of flames formed by the inner ring fire cover 10 is improved.

When the cooker is used for heating, the central flame formed by the first inner ring fire holes 111 has higher stability, so that the cooker has a better heating effect. Under central flame combustion state, the heat of its production can radiate to the periphery direction of pan along the bottom surface of pan gradually, cooperates simultaneously second inner ring fire hole 131 with the zhonghuan fire that third inner ring fire hole 132 formed can form relatively even heating surface on the bottom surface of pan, and then avoids the pan bottom surface to be heated inhomogeneous problem.

When a small amount of food is cooked, since the food is generally concentrated at the center of the pot, it is possible to have a higher heating efficiency when heating the small amount of food by improving the stability of the center flame formed by the first inner ring flame holes 111. When heating a small amount of food, can adjust to the state of minimum fire burning, first inner ring fire hole 111 can form stable flame, and then can promote the utilization ratio of gas.

Since the third inner ring fire hole 132 communicates with the second inner ring gas chamber 136, the third inner ring fire hole 132 can form a middle ring fire independent of the second inner ring fire hole 131. When the gas load of the second inner ring gas cavity 136 is adjusted, the first inner ring gas cavity 135 is not interfered, and then the third inner ring fire hole 132 is not affected when the gas loads of the first inner ring fire hole 111 and the second inner ring fire hole 131 are adjusted.

When the inner ring fire cover 10 is in a small fire combustion state, the first inner ring fire hole 111 and the second inner ring fire hole 131 share the gas load of the first inner ring gas cavity 135 because the gas load of the first inner ring gas cavity 135 is adjusted. Since the second inner ring fire hole 131 and the third inner ring fire hole 132 are both disposed on the outer ring wall 13, when the combustion state of the inner ring fire cover 10 is adjusted to change the gas load of the second inner ring fire hole 131, the gas load of the third inner ring fire hole 132 may be synchronously adjusted to adapt the gas loads in the second inner ring fire hole 131 and the third inner ring fire hole 132, so that the flow rates of the gas flows injected from the second inner ring fire hole 131 and the third inner ring fire hole 132 are adapted, and by adjusting the flow rate of the gas flow injected from the third inner ring fire hole 132, the interference between the gas flows injected from the second inner ring fire hole 131 and the third inner ring fire hole 132 may be increased to improve the stability of flame combustion.

Because the second inner ring gas chamber 136 and the third inner ring gas chamber are independent of each other and have different gas flow input channels, when the central flame and the middle ring flame formed by the inner ring fire cover 10 are adjusted, the intensity of the middle ring flame formed by the third inner ring fire hole 132 can be adjusted on the premise that the central flame formed by the first inner ring fire hole 111 and the middle ring flame formed by the second inner ring fire hole 131 are kept stable, and thus the flame formed by the inner ring fire cover 10 can be adjusted more widely.

In manufacturing the inner ring fire cover 10, the inner ring wall 12, the outer ring wall 13, and the connecting plate 14 may be integrally provided. The second inner ring fire holes 131 and the third inner ring fire holes 132 may be spaced apart from each other in the axial direction of the outer ring wall 13. The axial direction of the second inner ring fire hole 131 and the axial direction of the third inner ring fire hole 132 may not be parallel, so that a certain included angle is formed between the flow direction of the air flow ejected from the second inner ring fire hole 131 and the flow direction of the air flow ejected from the third inner ring fire hole 132, and under the interaction of the air flows in different flow directions, a flame stabilizing effect can be achieved, so that the middle ring fire formed by the second inner ring fire hole 131 and the third inner ring fire hole is more stable, and the occurrence of flame escaping is avoided; the air current of equidirectional noninterference makes the gas fully mix with the air, and then promotes the gas utilization ratio.

Referring to fig. 2, in an embodiment of the present invention, a flow guiding wall 141 is disposed between the inner annular wall 12 and the connecting plate 14, one end of the flow guiding wall 141 is connected to the inner annular wall 12, and the other end is connected to one end of the connecting plate 14 away from the outer annular wall 13; a first diversion inclined plane 142 for guiding the airflow of the central cavity 121 towards the second inner annular fire hole 131 is formed on one side surface of the diversion wall 141 facing the first inner annular combustion gas cavity 135.

The gas flow entering the central cavity 121 partially flows from the middle to the first inner ring fire hole 111, and the gas flow partially close to the inner wall of the inner ring wall 12 flows along the central cavity 121 and the first diversion inclined plane 142 to flow toward the second inner ring fire hole 131, so that the gas delivered by the central cavity 121 can be gradually dispersed and output toward the first inner ring fire hole 111 and the second inner ring fire hole 131, and a vortex is formed on one side of the top cover 11 facing the first inner ring gas cavity 135 in the high-speed gas flow process, thereby avoiding the problem of increased wind resistance on one side of the first inner ring fire hole 111 close to the first inner ring gas cavity 135. Through reducing first inner ring fire hole 111 is close to the vortex of first inner ring gas chamber 135 one side can make the air current of first inner ring fire hole 111 is even steady state output, and then can avoid appearing first inner ring fire hole 111 gas load sudden change and lead to the unstable problem of central flame. Since the airflow can flow along the first diversion inclined plane 142 toward the second inner ring fire hole 131, the airflow can be naturally diverted, and the gas load of the first inner ring fire hole 111 is reduced.

In another embodiment of the present invention, a second diversion inclined plane 143 is formed on a side surface of the diversion wall 141 facing the second inner ring gas chamber 136 for guiding the airflow of the second inner ring gas chamber 136 to the third inner ring fire hole 132. The second diversion inclined plane 143 is used for gradually guiding the airflow flowing along the outer wall of the inner annular wall 12 to the direction of the third inner annular fire hole 132, so as to avoid the occurrence of vortex at a position close to the third inner annular fire hole 132 and reduce the wind resistance at one end of the third inner annular fire hole 132 close to the second inner annular gas chamber 136.

In order to facilitate control of the combustion state of the gas injected from the first inner ring flame hole 111, a through hole 335 may be formed in the connecting plate 14 for inserting a thermocouple into the top cover 11 in the first inner ring gas chamber 135 from the second inner ring gas chamber 136.

The inner ring fire cover 10 may be detachably mounted on the outer ring wall 13. The first inner ring fire hole 111 may be disposed near the center of the top cover 11 so that the first inner ring fire hole 111 forms a concentrated heating range. The central chamber 121 may be disposed opposite to the first inner annular flame hole 111 so that the gas supplied from the central chamber 121 to the first inner annular gas chamber 135 can act more on the first inner annular flame hole 111. Under the partial pressure of the second inner ring fire hole 131, the first inner ring fire hole 111 has more moderate gas load under the premise of having sufficient gas supply, so as to have more stable combustion state.

Referring to fig. 2, in an embodiment of the present invention, the outer annular wall 13 is provided with a flame stabilizing hole 133 communicating with the second inner annular gas chamber 136. The flame stabilizing holes 133 and the third inner ring flame holes 132 have the same air flow source.

The flame stabilizing holes 133 may be used to share the gas load of the third inner ring fire holes 132, so that the gas flow injected from the third inner ring fire holes 132 can be more stably combusted.

When the flame stabilizing holes 133 are disposed between the second inner ring fire holes 131 and the third inner ring fire holes 132, the air flow formed by spraying the flame stabilizing holes 133 can simultaneously act on the air flow formed by spraying the second inner ring fire holes 131 and the third inner ring fire holes 132, and thus the flame stabilizing effect on the flame formed by the second inner ring fire holes 131 and the third inner ring fire holes 132 can be achieved.

Because the flame stabilizing holes 133 are communicated with the second inner ring flame holes 131, when the gas load of the first inner ring gas cavity 135 is adjusted and the gas load of the second inner ring gas cavity 136 is correspondingly adjusted, the flow rate of the gas flow formed by the flame stabilizing holes 133 can be synchronously adjusted, so that the flame stabilizing holes 133 can play a better flame stabilizing effect.

The axial direction of the flame stabilizing holes 133 and the axial direction of the third inner ring fire holes 132 or the second inner ring fire holes 131 may be not parallel to each other, so that the flow direction of the air flow formed by the flame stabilizing holes 133 is different from the flow direction of the air flow formed by the third inner ring fire holes 132 or the second inner ring fire holes 131, so that the air flows in different flow directions interact with each other, thereby having a better flame stabilizing effect, and the stability of the flame formed by the second inner ring fire holes 131 and the third inner ring fire holes 132 is higher.

In order to improve the flame stabilizing effect, in the present embodiment, optionally, the outer circumference of the outer annular wall 13 is provided with a flame stabilizing groove 134; one end of the flame stabilizing hole 133, which is far away from the second inner ring gas cavity 136, is communicated with the flame stabilizing groove 134. The flame holding grooves 134 may be circumferentially formed along the outer circumference of the outer annular wall 13, and the flame holding holes 133 communicate with the inside of the flame holding grooves 134, so that the air flow jetted from the flame holding holes 133 is dispersed and radiated toward the outer circumference of the outer annular wall 13 under the action of the flame holding grooves 134. Under the action of the flame holding grooves 134, the gas flow output from the flame holding holes 133 can sufficiently act on the second inner ring fire holes 131 and/or the third inner ring fire holes 132 to achieve a better flame holding effect.

In another embodiment of the present invention, the flame holding groove 134 is provided with a through hole communicating with the inside of the third inner ring fire hole 132, and the air flow outputted from the third inner ring fire hole 132 is partially conveyed to the flame holding groove 134 to reduce the gas load of the third inner ring fire hole 132, so that the flame stability formed by spraying the third inner ring fire hole 132 is better.

Referring to fig. 3 and 4, in an embodiment of the present invention, the inner ring fire cover 10 further includes: a fixed net 112 installed on one side of the top cover 11 facing away from the first inner-ring gas chamber 135; and an infrared combustion plate 113 installed between the fixing net 112 and the top cover 11. The infrared combustion plate 113 is used for forming an infrared combustion structure on the inner ring fire cover 10.

Through adopting the mode of infrared burning, can promote the combustion performance of the combustor that interior ring fire lid 10 corresponds improves heating efficiency. The inner ring fire cover 10 is further provided with other functional components matched with the infrared combustion plate 113, which can refer to the prior art.

Optionally, in this embodiment, one end of the outer annular wall 13 close to the top cover 11 is provided with a step surface 137, and the outer periphery of the top cover 11 is movably mounted on the step surface 137. The top cover 11 and the outer annular wall 13 are detachably mounted. The outer peripheral edge of the top cover 11 may be provided with a stepped structure adapted to the stepped surface 137 so that the outer annular wall 13 can serve to restrict the radial movement of the top cover 11.

When being provided with infrared combustion plate 113, can make top cap 11 dorsad first inner ring gas chamber 135 one side set up with the groove that infrared combustion plate 113 shape is unanimous, will infrared combustion plate 113 imbeds in the groove, through fixing net 112 restriction infrared combustion plate 113 is to keeping away from top cap 11 direction removes. The fixing net 112 may be a steel net or the like.

The utility model discloses on the basis of above-mentioned inner ring fire lid 10, provide a combustor, include as above-mentioned any embodiment the inner ring fire lid 10 with divide gas dish 30, divide gas dish 30 to include: the outer disc body 31 is provided with an outer ring gas cavity 311, an outer ring fire cover 20 is arranged on the outer disc body 31, and the outer ring fire cover 20 is provided with an outer ring fire hole 21 communicated with the outer ring gas cavity 311; the inner disc body 33 is provided with the inner ring fire cover 10, the outer disc body 31 is arranged outside the inner disc body 33 in a surrounding mode, the inner disc body 33 is provided with a first air inlet 40 and a second air inlet 50, the second inner ring gas cavity 136 is communicated with the first air inlet 40, the central cavity 121 is communicated with the second air inlet 50, and the outer ring gas cavity 311 is communicated with the first air inlet 40.

The air distribution plate 30 has two independent air inlet passages of a first air inlet 40 and a second air inlet 50. The second inner ring gas cavity 136 and the second inner ring gas cavity 136 are two independent cavities in the gas distribution disc 30.

From first air inlet 40 gets into divide the air current of gas dish 30, be used for to the third inner ring fire hole 132 air feed of inner ring fire lid 10, certainly second air inlet 50 gets into divide the air current of gas dish 30 be used for to first inner ring fire hole 111 with the air feed of second inner ring fire hole 131.

Since the first air inlet 40 and the second air inlet 50 are independent of each other, the combustion state of the burner can be adjusted by adjusting the gas load of the first air inlet 40 and the second air inlet 50 when the burner is in a normal combustion state. The gas input into the central cavity 121 from the second gas inlet 50 is divided into two parts to be output after entering the first inner ring gas cavity 135, and the second inner ring fire hole 131 shares the gas load of the first inner ring fire hole 111, so that the flame formed by the first inner ring fire hole 111 is relatively stable, and further, a middle ring fire stably burning in the middle of the burner is formed.

When the first air inlet 40 inputs air flow into the second inner-ring gas cavity 136, the air flow of the second air inlet 50 is not affected, and then the third inner-ring fire hole 132, the first inner-ring fire hole 111 and the second inner-ring fire hole 131 can be adjusted in a matching manner, so that a stable combustion state of the burner is realized.

The air flow input by the first air inlet 40 is simultaneously delivered to the outer ring fire hole 21 and the third inner ring fire hole 132, and when the inner ring fire cover 10 is provided with the flame stabilizing holes 133, the air flow input by the first air inlet 40 is simultaneously delivered to the flame stabilizing holes 133.

Because the outer ring fire holes 21 and the third inner ring fire holes 132 can be synchronously adjusted, the combustor can realize wider adjustment. When the combustion state of the first inner ring fire hole 111 changes, the third inner ring fire hole 132 and the outer ring fire hole 21 can be synchronously adjusted to realize different combustion states of the center flame, the middle ring fire and the outer ring fire when needed.

The outer ring fire hole 21 may be configured to share a gas load of the third inner ring fire hole 132, so that the gas load of the third inner ring fire hole 132 may be relatively smaller, so that the flame formed by the third inner ring fire hole 132 may play a role in assisting the combustion of the second inner ring fire hole 131, and when the burner is in a low-fire or low-fire combustion state, the central flame and the middle ring fire formed by the inner ring fire cover 10 may be correspondingly smaller to maintain stable combustion.

Referring to fig. 6 to 9, in an embodiment of the present invention, the inner tray body 33 is hollow, the inner ring fire cover 10 is installed on the inner tray body 33, the inner tray body 33 is provided with an annular partition 331, a first transition gas chamber 332 is formed between the annular partition 331 and the inner wall of the inner tray body 33, the inner tray body 33 is provided with a through hole 335 communicating the first transition gas chamber 332 with the second inner ring gas chamber 136 of the inner ring fire cover 10, the first gas inlet 40 is formed on the inner tray body 33 and is communicated with the first transition gas chamber 332, and a second transition gas chamber 333 communicating the second gas inlet 50 with the central chamber 121 is formed inside the annular partition 331.

The outer disc 31 and the inner disc 33 are interconnected to allow airflow from the first transition gas chamber 332 into the outer ring gas chamber 311.

The annular partition plate 331 is hollow to form the second transition gas cavity 333, the second transition gas cavity 333 is communicated with the central cavity 121 of the inner ring fire cover 10 and the second gas inlet 50 to supply gas to the first inner ring gas cavity 135, and one end of the annular partition plate 331, which is far away from the second gas inlet 50, is connected with the inner disc body and communicated with the first inner ring gas cavity. The first inner ring combustion gas chamber 135 is an annular chamber formed between the annular partition 331 and the inner wall of the inner disc 33.

Referring to fig. 6, by forming the first inner ring gas chamber 135, the gas input from the first gas inlet 40 can be uniformly distributed in the first inner ring gas chamber 135, so that the gas flow can be dispersedly delivered to the second inner ring gas chamber 136 and the outer ring gas chamber 311. The first inner ring combustion gas cavity 135 can be used for forming a stable gas circuit, so that the gas flow distribution of the first inner ring combustion gas cavity 135 and the outer ring combustion gas cavity 311 is uniform and is matched with the corresponding third inner ring fire holes 132 and the outer ring fire holes 21.

Referring to fig. 6 and 7, in order to facilitate the connection between the inner fire cover 10 and the inner disc 33, in this embodiment, optionally, one of the inner disc 33 and the outer annular wall 13 of the inner fire cover 10 is provided with a protrusion 334, and the other one of the inner disc 33 and the outer annular wall 13 is provided with a limiting groove 138, and the protrusion 334 is embedded in the limiting groove 138. The protruding part 334 and the limiting groove 138 are matched with each other, and can be used for limiting the radial movement of the inner ring fire cover 10, so that the stability of the inner ring fire cover 10 can be improved. When the protruding portion 334 is matched with the limiting groove 138, the inner disc 33, the outer annular wall 13, the connecting plate 14 and the inner annular wall 12 form the second inner-ring gas chamber 136, a through hole 335 on the inner disc 33, which communicates the first transition gas chamber 332 with the second inner-ring gas chamber 136, is an air inlet end of the second inner-ring gas chamber 136, and the third inner-ring fire hole 132 and the flame stabilizing hole 133 are air outlet ends of the second inner-ring gas chamber 136.

Referring to fig. 7 and 9, the first gas inlet 40 and the second gas inlet 50 may be provided at the same side of the inner disk 33, and a through hole 335 connecting the first transition gas chamber 332 and the second inner ring gas chamber 136 may be provided on a wall surface of an end of the inner disk 33 away from the first gas inlet 40.

Referring to fig. 8, since the first transition gas cavity 332 is an annular cavity, the through holes 335 connecting the first transition gas cavity 332 and the second inner ring gas cavity 136 may correspond to the first transition gas cavity 332 and be annularly distributed, so that the gas in the first transition gas cavity 332 can be uniformly delivered to the second inner ring gas cavity 136, the gas loads of the third inner ring fire holes 132 are consistent, and the flame formed by the injection is more stable.

In order to facilitate connection between the inner tray 33 and the outer tray 31, in this embodiment, optionally, the air distribution tray 30 further includes: a support portion 32, disposed between the inner disc 33 and the outer disc 31, wherein an air flow passage 321 communicating the first transition gas chamber 332 and the outer ring gas chamber 311 is formed in the support portion 32; a gap is formed between the inner tray body 33 and the outer tray body 31, and the supporting portion 32 is arranged in the gap and used for connecting the inner tray body 33 and the outer tray body 31.

By arranging the supporting part 32, a certain distance is kept between the middle fire formed by the inner fire cover 10 on the inner disc body 33 and the outer fire formed by the outer fire cover 20 on the outer disc body 31. When the burner is operated, the central flame formed by the first inner ring fire hole 111 and the middle ring fire formed by the second inner ring fire hole 131 and the third inner ring fire hole 132 act on the bottom surface of the pot, the heat can be gradually radiated to the periphery of the pot, a heating surface with relatively uniform temperature distribution can be formed by making a certain distance between the middle ring fire and the outer ring fire, and the problem that the bottom surface of the pot is heated unevenly is prevented.

In this embodiment, optionally, the supporting portions 32 are provided at intervals, and a secondary air supply port for supplying secondary air to the inner ring fire cover 10 is formed between adjacent supporting portions 32. The secondary air supply port is used for supplying secondary air to the second inner ring fire hole 131 and the third inner ring fire hole 132 of the inner ring fire cover 10 from the bottom, so as to increase the secondary air supply amount of the middle ring fire of the inner ring fire cover 10.

The secondary air supply ports between the plurality of supporting portions 32 can form a uniform air supply passage between the outer disc body 31 and the inner disc body 33 to improve gas combustion efficiency. When the burner is operated, a high heat area is formed near the flame area of the inner ring fire cover 10 and the outer ring fire cover 20, so that air is not easily input into the burner from the side of the outer disk body 31. By providing the secondary air supply port between the adjacent support portions 32, the secondary air can be supplied from the bottom of the air distributor 30 toward the inner ring fire cover 10, and the secondary air can be supplied from a low temperature region to a high temperature region more easily, which contributes to an increase in the amount of supplied secondary air.

The utility model provides an embodiment of a gas cooking utensils on the basis of above-mentioned combustor.

The gas cooker comprises the burner according to any one of the embodiments.

The above is only the optional embodiment of the present invention, and not therefore the limit of the patent scope of the present invention, all of which are in the concept of the present invention, the equivalent structure transformation of the content of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. An inner ring fire cover, comprising:

a top cover;

the top cover is arranged on the outer ring wall;

2. The inner ring fire cover as claimed in claim 1, wherein the outer ring wall is provided with a flame stabilizing hole communicating with the second inner ring gas chamber.

3. The inner ring fire cover as claimed in claim 2, wherein the outer circumferential wall is provided at its outer circumference with a flame holding groove;

4. The inner ring fire cover of claim 1, further comprising:

5. The inner ring fire lid as claimed in claim 1, wherein said outer annular wall has a stepped surface at an end thereof adjacent to said top lid, and an outer peripheral edge of said top lid is movably mounted on said stepped surface.

6. The inner ring fire cover as claimed in any one of claims 1 to 5, wherein a flow guide wall is provided between the inner annular wall and the connecting plate, one end of the flow guide wall is connected with the inner annular wall, and the other end is connected with one end of the connecting plate away from the outer annular wall;

7. A burner comprising an inner ring fire cover and a gas distribution plate as claimed in any one of claims 1 to 6, the gas distribution plate comprising:

8. The burner as claimed in claim 7, wherein the inner tray body is hollow, the inner tray body is provided with an annular partition plate, a first transition gas chamber is formed between the annular partition plate and the inner wall of the inner tray body, the inner tray body is provided with a through hole for communicating the first transition gas chamber with a second inner ring gas chamber of the inner ring fire cover, the first gas inlet is formed on the inner tray body and communicated with the first transition gas chamber, and the annular partition plate is internally provided with a second transition gas chamber for communicating the second gas inlet with the central chamber.

9. The burner of claim 8, wherein the gas distributor plate further comprises:

the supporting part is arranged between the inner disk body and the outer disk body, and an airflow channel communicated with the first transition gas cavity and the outer ring gas cavity is formed in the supporting part.

10. The burner as claimed in claim 9, wherein the supporting portion is provided in plurality at intervals, and a secondary air supply port for supplying secondary air to the inner ring fire cover is formed between adjacent supporting portions.

11. The burner of claim 7, wherein one of the inner disk body and the outer annular wall of the inner ring fire cover is provided with a projection, and the other thereof is provided with a limit groove, the projection being inserted into the limit groove.

12. Gas hob, characterized in, that the gas hob comprises a burner according to any one of the claims 7 to 11.