CN118189168A - Inner ring fire cover, burner and gas cooker - Google Patents

Abstract

The invention discloses an inner ring fire cover, a burner and a gas cooker, and relates to the technical field of gas cookers. The inner ring fire cover comprises a fire cover body, a top cover and a baffle part, wherein the fire cover body and the top cover are surrounded to form a gas mixing cavity, the baffle part is arranged in the fire cover body and divides the gas mixing cavity into a primary gas mixing cavity and a secondary gas mixing cavity which are adjacent to each other in the axial direction of the inner ring fire cover, and the secondary gas mixing cavity is relatively close to the top cover; the primary gas mixing cavity comprises a first gas channel and a second gas channel which are mutually independent, one end of the first gas channel, which is close to the top cover, penetrates through the baffle part and is communicated with the secondary gas mixing cavity, the main fire hole of the inner ring fire cover is communicated with the second gas channel, and the first ignition hole of the inner ring fire cover is communicated with the secondary gas mixing cavity. Through foretell setting for first ignition hole can get rid of the dual influence of main fire hole's restriction and gas pressure stability simultaneously, effectual solution first ignition hole is from the ignition failure problem such as flame.

Description

Inner ring fire cover, burner and gas cooker

Technical Field

The invention relates to the technical field of gas cookers, in particular to an inner ring fire cover, a combustor and a gas cooker.

Background

At present, an inner ring fire cover of a gas cooker in the market is generally provided with an ignition hole and a main fire hole, and the ignition hole and the main fire hole are both communicated with a mixing cavity in the inner ring fire cover and share one path of gas in the mixing cavity. In the design and manufacturing stage of the gas stove, the flue gas efficiency of the main fire hole is required to reach a certain standard requirement when the gas is combusted, and the ignition hole is only required to be successfully ignited, so that the flue gas efficiency of the main fire hole is preferentially ensured by adjusting related factors such as gas pressure, a damper and the like in the stage, so that the corresponding standard is reached and the inspection and acceptance are passed.

However, when the gas stove is installed in a user's home, the ignition condition of the ignition hole is in a less suitable range, and the environmental factors of the user's home also fluctuate, for example, the gas pressure of the user using the gas bottle is relatively large, or the air door moves in the transportation and installation process, so that the gas stove can be unstable in ignition at the ignition hole in the use process, thereby the problem of ignition failure such as flame separation of the ignition hole is faced, and the use of the user is affected.

Disclosure of Invention

The invention aims to overcome the defect that ignition failure is possibly caused by the dual influence of the ignition hole of an inner ring fire cover and the blockage of a main fire hole and the pressure stability of fuel gas in the prior art, and provides the inner ring fire cover, a burner and a fuel gas stove.

The invention solves the technical problems by the following technical scheme:

An inner ring fire lid, its including fire lid body and top cap, fire lid body with the top cap encloses to establish and forms the gas mixing cavity, inner ring fire lid still includes:

the baffle part is arranged in the fire cover body and divides the gas mixing cavity into a primary gas mixing cavity and a secondary gas mixing cavity which are adjacent to each other in the axial direction of the inner ring fire cover, wherein the secondary gas mixing cavity is relatively close to the top cover;

The primary gas mixing cavity comprises a first gas channel and a second gas channel which are mutually independent, one end of the first gas channel, which is close to the top cover, penetrates through the baffle part and is communicated with the secondary gas mixing cavity, the main fire hole of the inner ring fire cover is communicated with the second gas channel, and the first ignition hole of the inner ring fire cover is communicated with the secondary gas mixing cavity.

In the scheme, the main fire hole is communicated with the second gas channel, so that the pressure, the air-fuel ratio and the like of the gas entering the second gas channel can be adjusted, and the combustion of the gas at the main fire hole can obtain larger gas efficiency; the secondary gas mixing chamber adjacent to the primary gas mixing chamber is formed by utilizing the baffle part in the fire cover body, and the first gas channel and the first ignition hole are communicated with the secondary gas mixing chamber, and firstly, the pressure, the air-fuel ratio and the like of the gas entering the first gas channel can be independently regulated to enable the first gas channel to get rid of the restriction of the main fire hole; and secondly, the fuel gas enters the secondary gas mixing chamber through the first fuel gas channel, impact diffusion is generated in the secondary gas mixing chamber, and the turbulence coefficient of the fuel gas is increased, so that the fuel gas is further uniformly mixed with air in the secondary gas mixing chamber, and is stably ejected through the first ignition hole. Through foretell setting for first ignition hole can get rid of the dual influence of main fire hole's restriction and gas pressure stability simultaneously, effectual solution first ignition hole is from the ignition failure problem such as flame.

Further, the opening corresponding to one end of the first gas passage penetrating through the blocking part faces the top cover, and the first ignition hole penetrates through the side wall of the fire cover body.

In this scheme, through this kind of setting, after the gas gets into secondary gas mixing cavity through first gas passageway, can directly strike on the top cap to further increase the turbulent flow coefficient of this passageway gas, make it further mix even in secondary gas mixing cavity, the first ignition hole that is followed on the fire cap body lateral wall sprays and ignites again, thereby reduce the influence of atmospheric pressure fluctuation, increase the stability that the gas sprays, improve the performance of ignition, steady flame.

Furthermore, the baffle part is arranged in the fire cover body in parallel relative to the top cover, one end, close to the top cover, of the first gas channel vertically penetrates through the baffle part, and the first gas channel, the fire cover body and the baffle part enclose to form the second gas channel.

In the scheme, through the arrangement, the second gas channels are arranged around the first gas channels and are arranged independently of each other more conveniently, so that the two gas channels can respectively and independently adjust the pressure, the air-fuel ratio and the like of the gas without interference; in addition, separate the fender portion for top cap parallel arrangement, the one end that first gas passageway is close to the top cap wears to locate perpendicularly to separate the fender portion, more makes things convenient for the inside gas of first gas passageway to strike to the top cap perpendicularly to more effectual increase the turbulent flow coefficient of this way gas.

Further, the inner ring fire cover further comprises a second ignition hole, the second ignition hole penetrates through the side wall of the fire cover body and the separation part, the communication end of the second ignition hole is communicated with the first gas channel, and the gas flow of the second ignition hole at the gas outlet end of the second ignition hole and the gas flow of the first ignition hole at the gas outlet end of the first ignition hole are mutually intersected.

In the scheme, after the fuel gas enters the first fuel gas channel, the fuel gas can be divided into two parallel paths, wherein one path of the fuel gas is directly ejected from the second ignition hole to form the inner ring fire cover without passing through the secondary gas mixing chamber, and the fuel gas can be rapidly discharged under the condition of cold ignition, so that the timeliness of ignition is ensured; the other path of the gas passes through the secondary gas mixing cavity and then is ejected from the first ignition hole, so that the gas is stably discharged after being impacted and diffused in the secondary gas mixing cavity, and the gas can be smoothly ignited under the condition of large pressure fluctuation; in addition, the gas flow of the second ignition hole at the gas outlet end and the gas flow of the first ignition hole at the ignition end are mutually intersected, so that two gas flows can be mutually supplemented and contained after being ejected, the pressure fluctuation of the gas can be better adapted, and the performance of ignition and flame stabilization is improved.

Further, the communication end of the first ignition hole is communicated with the secondary mixing chamber, the ignition end of the first ignition hole is positioned on the outer side wall of the fire cover body, and at least one of the first ignition hole and the second ignition hole is arranged on the side wall of the fire cover body in a downward inclined mode.

In the scheme, through the arrangement, on one hand, the air flow of the first ignition hole at the ignition end of the air flow and the air flow of the second ignition hole at the air flow of the second ignition hole can be more conveniently converged, so that two air flows can be gathered, and an ignition needle at a gathering position can be effectively ignited; on the other hand, when the pan of inner ring fire lid top produced the overflow, the first ignition hole or the second ignition hole that slope set up downwards also can not be blockked up by the overflow to guarantee that there is at least one ignition hole always to have the gas to spray, avoided producing the problem of ignition failure because the gas circuit is not led through.

Further, the inner ring fire cover further comprises a communication hole, a first end of the communication hole is communicated with the second ignition hole, and a second end of the communication hole is communicated with the secondary gas mixing chamber and is arranged adjacent to the communication end of the first ignition hole.

In this scheme, through the second end direct intercommunication with the intercommunicating pore in secondary gas mixing cavity and adjacent the intercommunication end setting of first ignition hole, first end direct intercommunication is in the second ignition hole for between parallel first ignition hole and the second ignition hole of setting up by the intercommunicating pore, at the in-process of ignition, the gas can be complemented each other through parallel first ignition hole and the second ignition hole of setting up, even if one of them appears by the problem such as overflow jam all the way, the gas of other way is also in time mended, can also utilize the gas of other way to dredge the one way of jam simultaneously, the effectual ignition success rate that improves.

Further, the second ignition hole comprises a first circulation section and a second circulation section which are arranged continuously, the communication end and the air outlet end of the second ignition hole are respectively arranged at the end parts of the first circulation section and the second circulation section, which are far away from each other, and the inner diameter size of the first circulation section is smaller than that of the second circulation section;

The first end of the communication hole is communicated with the second communication section and is arranged adjacent to the first communication section.

In this scheme, through this kind of setting, when first ignition hole and second ignition hole all normally work, when the gas is from first circulation section transition to second circulation section, because the increase of internal diameter size, make its velocity of flow increase, the quick gas outlet end that flows to the second ignition hole avoids under normal condition, the inside that the inside gas in second ignition hole enters into the inside in first ignition hole through the intercommunicating pore for second ignition hole and first ignition hole exert its effect respectively, and make the gas flow of the respective gas outlet end can normally meet, improve the performance of ignition, steady flame.

Further, the inner ring fire cover further comprises a plurality of flame stabilizing holes, and the flame stabilizing holes are all arranged on the side wall of the fire cover body in a penetrating mode and are communicated with the secondary gas mixing chamber.

In this scheme, all wear to establish a plurality of steady flame holes on the lateral wall of fire lid body to communicate in secondary mixing chamber, because objective conditions such as gas velocity of flow, gas pressure that steady flame hole corresponds are similar with first ignition hole, make after the ignition end at first ignition hole carries out preliminary ignition to the ignition needle, can utilize steady flame Kong Duidian fire to carry out further steady flame, in order to realize the whole ignition of whole inner ring fire lid.

Further, the periphery of the fire cover body is provided with a vertical diversion trench and a diversion blocking trench, the vertical diversion trench is arranged on two sides of the ignition end of the first ignition hole in the circumferential direction of the fire cover body, and the diversion blocking trench is communicated with the vertical diversion trench on two sides of the ignition end of the first ignition hole and extends to the adjacent main fire hole position along the circumferential direction of the fire cover body.

In the scheme, the vertical diversion trenches are arranged at the two sides of the ignition end of the first ignition hole, when overflow liquid is generated by the cooker above the inner ring fire cover, the vertical diversion trenches can be utilized to conduct drainage on the overflow liquid when the overflow liquid flows along the wall surface, so that the overflow liquid is blocked from flowing along the wall surface towards the direction of the first ignition hole, and the risk of blocking the first ignition hole is reduced; in addition, when the overflow liquid is further increased, the overflow liquid can be guided to the position of the main fire hole by the guide flow blocking groove, and the main fire hole is blocked because the aperture of the main fire hole is larger and the flame is larger.

Further, the outer radial dimension of the top cover is larger than the outer radial dimension of the fire cover body, and the top cover corresponds to the ignition end position of the first ignition hole and extends outwards along the radial direction to form a shielding eave;

And/or the fire cover body and the top cover are detachably connected.

In the scheme, through the structural design of the top cover, the top cover not only can be matched with the fire cover body to form a secondary gas mixing cavity, but also can be used for shielding the eave to serve as a protective cover of the first ignition hole, so that most pot overflow liquid can be blocked; meanwhile, the fire cover body and the top cover are detachably connected, so that the whole inner ring fire cover is simpler and more convenient to process and assemble.

A burner, said burner comprising:

an inner ring fire cover as described above;

and the top end of the ignition needle is positioned on the air outlet flow path of the first ignition hole at the ignition end of the ignition needle.

In this scheme, through setting up the top of ignition needle on the gas flow path of the gas flow of first ignition hole at its ignition end, the ignition end that jets out from first ignition hole when the gas can cooperate at the top of ignition needle to fire to improve ignition stability and ignition success rate.

A gas cooker comprising a burner as described above.

In this scheme, through setting up the combustor as described above on gas cooking utensils to avoid in this gas cooking utensils, the first ignition hole of inner ring fire lid is the dual influence of the pinning and the gas pressure stability of fire hole, and then improve the ignition stability and the ignition success rate of whole gas cooking utensils.

The invention has the positive progress effects that:

firstly, by communicating the main fire hole with the second gas channel, the pressure, air-fuel ratio and the like of the gas entering the second gas channel can be adjusted, so that the combustion of the gas at the main fire hole can obtain larger gas efficiency;

Secondly, a secondary gas mixing chamber adjacent to the primary gas mixing chamber is formed by utilizing a baffle part in the fire cover body, and the first gas channel and the first ignition hole are communicated with the secondary gas mixing chamber, so that the pressure, the air-fuel ratio and the like of the gas entering the first gas channel can be independently regulated, and the gas can be prevented from being blocked by the main fire hole;

Finally, the fuel gas enters the secondary gas mixing chamber through the first fuel gas channel, impact diffusion is generated in the secondary gas mixing chamber, the turbulence coefficient of the fuel gas is increased, the fuel gas is further uniformly mixed with air in the secondary gas mixing chamber, and then the fuel gas is stably ejected through the first ignition hole.

Drawings

Fig. 1 is a schematic view (a) of the overall structure of an inner ring fire cover according to an embodiment of the invention.

Fig. 2 is a schematic diagram of the overall structure of the inner ring fire cover according to an embodiment of the invention.

FIG. 3 is a schematic view of the overall cross-sectional structure of an inner ring fire cover according to an embodiment of the invention.

Fig. 4 is a schematic diagram (a) illustrating an overall structure of a fire cover body according to an embodiment of the invention.

Fig. 5 is a schematic diagram of the overall structure of the fire cover body according to an embodiment of the invention.

Fig. 6 is a partially enlarged schematic view at a in fig. 5.

Fig. 7 is a schematic cross-sectional view of a fire cover body according to an embodiment of the invention.

Fig. 8 is a schematic view of the overall structure of the top cover according to an embodiment of the invention.

Reference numerals illustrate:

Fire cover body 1

Main fire hole 11

First ignition hole 12

Second ignition hole 13

First flow-through section 131

Second circulation segment 132

Communication hole 14

Flame stabilizing holes 15

Baffle part 16

Vertical diversion trench 17

Flow guide blocking groove 18

Top cover 2

Shielding eave 21

Inner ring gas channel 31

Outer ring gas channel 32

Secondary air mixing chamber 33

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention, and all other embodiments, based on the embodiments of the present invention, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present invention.

In the description of the present invention, it should 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", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The embodiment discloses a gas cooker, this gas cooker is including the combustor, is provided with inner ring fire lid and outer ring fire lid on the combustor, and the gas forms inner ring flame and outer ring flame respectively through inner ring fire lid and outer ring fire lid respectively. The outer ring fire cover can adopt a specific structure existing in the prior art, and the details are not repeated; as shown in fig. 1 and 2, the burner is further provided with an ignition needle (not shown in the drawings) corresponding to the inner ring fire cover, the inner ring fire cover is provided with a first ignition hole 12, the top end of the ignition needle is specifically arranged on the air outlet flow path of the first ignition hole 12 at the ignition end thereof, and when the fuel gas passes through the inner ring fire cover and is ejected from the ignition end of the first ignition hole 12, the fuel gas can be matched with the top end of the ignition needle to ignite.

The ignition of the gas cooker may be classified into broad ignition and narrow ignition. Wherein, the narrow ignition means that the inner ring fire cover is positioned at the ignition end position of the first ignition hole 12, and the high-voltage arc generated by the ignition needle ignites the injected fuel gas; and the broad ignition refers to the overall ignition of the gas cooker in a steady state. After the ignition needle is successfully ignited, other structures, such as the flame holding of the flame stabilizing holes 15, are combined, so that the gas cooker can achieve smooth ignition under a stable state.

As shown in fig. 1 and 2, the inner ring fire cover comprises a fire cover body 1 and a top cover 2, the overall appearance structure of the fire cover body 1 is a cylindrical structure, the top cover 2 is covered at one end of the fire cover body 1 in the axial direction, a gas mixing cavity is formed in the inner ring fire cover by utilizing the cooperation between the fire cover body 1 and the top cover 2, one end of the gas mixing cavity is of an opening structure, and fuel gas can enter the gas mixing cavity through the opening structure and is ejected from a main fire hole 11 and a first ignition hole 12 of the inner ring fire cover. Wherein, the gas is ejected from the first ignition hole 12, and is ignited by combining the high-voltage arc generated by the ignition needle, and the gas is ejected from the main ignition hole 11 to form an inner ring flame.

As shown in fig. 3 and 4, the inner ring fire cover further includes a blocking portion 16, and the blocking portion 16 is specifically disposed inside the inner ring fire cover and partitions the air mixing chamber into adjacent primary air mixing chamber and secondary air mixing chamber 33 in the axial direction of the inner ring fire cover. Wherein the secondary air mixing chamber 33 is disposed relatively close to the top cover 2, and the primary air mixing chamber is relatively close to the opening structure. The primary gas mixing chamber further comprises a first gas channel and a second gas channel which are mutually independent, wherein the first gas channel is an inner ring gas channel 31, the second gas channel is an outer ring gas channel 32, one end of the inner ring gas channel 31, which is close to the top cover 2, is penetrated through the baffle part 16 and is communicated with the secondary gas mixing chamber 33, the main fire hole 11 of the inner ring fire cover is specifically communicated with the outer ring gas channel 32, and the first ignition hole 12 of the inner ring fire cover is specifically communicated with the secondary gas mixing chamber 33.

By communicating the main fire hole 11 with the outer ring gas passage 32, the pressure, air-fuel ratio, etc. of the gas entering into the outer ring gas passage 32 can be adjusted, so that the combustion of the gas at the main fire hole 11 can obtain larger gas efficiency; the secondary gas mixing chamber 33 adjacent to the primary gas mixing chamber is formed by utilizing the baffle part 16 in the fire cover body 1, and the inner ring gas channel 31 and the first ignition hole 12 are communicated with the secondary gas mixing chamber 33, firstly, the pressure, the air-fuel ratio and the like of the gas entering the inner ring gas channel 31 can be independently regulated, so that the gas is free from the restraint of the main fire hole 11; secondly, the fuel gas enters the secondary gas mixing chamber 33 through the inner ring fuel gas channel 31, and impact diffusion is generated in the secondary gas mixing chamber 33, so that the turbulence coefficient of the fuel gas is increased, the fuel gas is further uniformly mixed with air in the secondary gas mixing chamber 33, and then is stably ejected through the first ignition hole 12. Through foretell setting for first ignition hole 12 can get rid of the dual influence of the restriction of main fire hole 11 and gas pressure stability simultaneously, effectual solution first ignition hole 12 leaves the ignition failure problem such as flame.

It should be noted that, in other alternative embodiments, the first gas passage may be the outer ring gas passage 32, and the second gas passage may be the inner ring gas passage 31, but other structural designs may be correspondingly adapted to communicate with the secondary gas mixing chamber 33 by using the outer ring gas passage 32, and communicate with the main fire hole 11 by using the inner ring gas passage 31.

In addition, in the case of setting two gas passages, the present embodiment may employ a corresponding burner existing in the prior art, where two gas passages are provided corresponding to the inner ring fire cover, and the two gas passages are respectively communicated with the inner ring gas passage 31 and the outer ring gas passage 32.

By the above-described structural design, the problem of the first ignition hole 12 being caught by the main fire hole 11 and the problem of being affected by the fluctuation of the gas pressure can be solved at the same time, not just one of them. Because, even if the problem that the first ignition hole 12 is affected by the fluctuation of the gas pressure is solved, it is still to be held by the main ignition hole 11, when the gas cooker with the inner ring fire cover is installed in the user's home, the ignition condition of the first ignition hole 12 is still in a less proper ignition condition, and if the gas pressure is stabilized in a higher state at this time, the ignition failure problem such as the ignition flame is still caused. However, if the problem that the first ignition hole 12 is affected by the gas pressure fluctuation is solved, but it still needs to be affected by the gas pressure fluctuation, when the gas cooker with the inner ring fire cover is installed in a user's home, although it can be in a proper ignition condition, if the gas pressure fluctuation is too large, the ignition failure such as flame separation can be caused. In this scheme, can solve the problem that first ignition hole 12 is held down by fire hole 11 and receive the problem that the gas pressure is undulant simultaneously, after the gas cooking utensils that have this inner ring fire lid are installed at user's family, can guarantee at first that first ignition hole 12 can be in a comparatively suitable ignition condition, and secondly reuse secondary mixes the further stable gas pressure of gas cavity 33 to the success rate of improvement ignition that can be great.

In addition, through adopting the structure that separates fender portion 16 and two gas passageway in this scheme, as an improvement whole for the inside of inner ring fire lid is separated into three spaces, and then can satisfy the condition such as the gas pressure that adjusts main fire hole 11 and first fire hole 12 correspondence respectively, makes it can not influence each other, can also further stabilize the steady voltage to the gas that first fire hole 12 corresponds simultaneously, improves the stability of ignition and the success rate of ignition, and overall structure is also more reasonable, simple.

As shown in fig. 3, in the primary air mixing chamber, an opening corresponding to one end of the inner ring gas passage 31 penetrating the barrier portion 16 is provided toward the top cover 2, and the first ignition hole 12 is specifically provided on the side wall of the fire cover body 1. Through this kind of setting, after the gas gets into secondary gas mixing cavity 33 through inner ring gas passageway 31, can directly strike on top cap 2 to further increase the turbulent flow coefficient of this passageway gas, make it further mix evenly in secondary gas mixing cavity 33, the first ignition hole 12 on the fire cover body 1 lateral wall is jetted out again and is lighted, thereby reduce the influence of atmospheric pressure fluctuation, increase the stability that the gas sprays, improve the performance of ignition, steady flame.

Specifically, as shown in fig. 4, the barrier 16 is provided in parallel to the top cover 2 in the interior of the fire cover body 1, and the center axis of the fire cover body 1 is provided perpendicularly to the barrier 16 because the overall outer shape of the fire cover body 1 is a cylindrical structure. One end of the inner ring gas channel 31, which is close to the top cover 2, vertically penetrates through the baffle part 16, the end part of the inner ring gas channel 31, which penetrates through the baffle part 16, is arranged in parallel with the baffle part 16, the central axis of the inner ring gas channel 31 coincides with the central axis of the fire cover body 1, and the inner ring gas channel 31, the fire cover body 1 and the baffle part 16 are jointly enclosed to form an outer ring gas channel 32. With such arrangement, it is more convenient to make the outer ring gas passages 32 circumferentially arranged on the inner ring gas passages 31 and separately arranged from each other, so that the two gas passages can separately adjust the pressure, air-fuel ratio, and the like of the gas, respectively, without causing interference with each other; in addition, separate the fender portion 16 for top cap 2 parallel arrangement, the one end that inner ring gas passageway 31 is close to top cap 2 wears to locate perpendicularly to separate fender portion 16, more makes things convenient for the inside gas of inner ring gas passageway 31 to strike top cap 2 perpendicularly to more effective increase the turbulent flow coefficient of this way gas.

In other alternative embodiments, the baffle 16 may not be disposed in parallel with the baffle 16, or may be disposed obliquely to each other, so long as the secondary air mixing chambers 33 can be formed with each other; the end of the inner ring gas channel 31 near the top cover 2 can also be arranged in a non-vertical penetrating way on the baffle part 16, even the opening corresponding to the end of the inner ring gas channel 31 penetrating the baffle part 16 can also not be arranged towards the top cover 2, as long as the gas can enter the secondary gas mixing chamber 33 from the inner ring gas channel 31 to generate further uniform mixing; the first ignition hole 12 may not be provided on the side wall of the fire cover body 1, for example, may be provided on the top cover 2, and is not limited in any way.

As shown in fig. 5, 6 and 7, the inner ring fire cover is further provided with a second ignition hole 13, the second ignition hole 13 is simultaneously penetrated through the side wall of the fire cover body 1 and the baffle part 16, the communication end of the second ignition hole 13 is communicated with the inner ring gas channel 31, and the gas flow of the second ignition hole 13 at the gas outlet end and the gas flow of the first ignition hole 12 at the ignition end are mutually intersected. Through the arrangement, after the fuel gas enters the inner ring fuel gas channel 31, the fuel gas can be further divided into two parallel paths, wherein one path of the fuel gas is directly ejected out of the fire cover body 1 from the second ignition hole 13 without passing through the secondary gas mixing chamber 33, and the fuel gas can be rapidly discharged under the condition of cold ignition, so that the timeliness of ignition is ensured; the other path of the gas passes through the secondary gas mixing chamber 33 and then is sprayed out of the first ignition hole 12 to form an inner ring fire cover, so that the gas is stably discharged after being impacted and diffused in the secondary gas mixing chamber 33, and the gas can be smoothly ignited under the condition of large pressure fluctuation; in addition, the air flow of the second ignition hole 13 at the air outlet end and the air flow of the first ignition hole 12 at the ignition end are mutually intersected, so that two gas flows can be mutually supplemented and contained after being ejected, the pressure fluctuation of the gas can be better adapted, and the ignition and flame stabilization performances are improved.

Specifically, as shown in fig. 3 and 7, the second ignition hole 13 horizontally penetrates through the side wall of the fire cover body 1 and the barrier portion 16, and the communication end of the first ignition hole 12 is communicated with the secondary air mixing chamber 33, the ignition end of the first ignition hole 12 is located on the outer side wall of the fire cover body 1, and the first ignition hole 12 is disposed on the side wall of the fire cover body 1 in a downward inclined manner. After the fuel gas enters the inner ring fuel gas channel 31, a part of the fuel gas passes through the second ignition hole 13 which is horizontally arranged and can be horizontally ejected, so that the ignition is more facilitated, and the ignition efficiency is improved; the first ignition hole 12 is arranged on the side wall of the fire cover body 1 in a downward inclined manner, so that on one hand, the gas flow of the first ignition hole 12 at the ignition end of the first ignition hole and the gas flow of the second ignition hole 13 at the gas outlet end of the second ignition hole can be more conveniently converged, two gas flows can be gathered, the ignition needle at the gathering position can be effectively ignited, on the other hand, when the pot above the inner ring fire cover generates overflow liquid, the first ignition hole 12 which is arranged in an inclined downward manner is not blocked by the overflow liquid, and therefore, the first ignition hole 12 is ensured to always have gas to be sprayed out, and the problem of ignition failure caused by air passage obstruction is avoided.

However, in other alternative embodiments, the first ignition hole 12 may be disposed horizontally, and the second ignition hole 13 may be disposed obliquely, or according to other specific situations, the orientations of the first ignition hole 12 and the second ignition hole 13 may be adjusted, so long as it is able to satisfy that the air flow of the second ignition hole 13 at the air outlet end thereof and the air flow of the first ignition hole 12 at the ignition end thereof intersect with each other.

Further, as shown in fig. 3 and 7, a communication hole 14 is further provided on the inner ring fire cover, a first end of the communication hole 14 is communicated with the second ignition hole 13, and a second end of the communication hole 14 is communicated with the secondary air mixing chamber 33 and is disposed adjacent to the communication end of the first ignition hole 12. In the present embodiment, the communication hole 14 vertically penetrates the barrier portion 16, so that the upper end of the communication hole 14 communicates with the secondary air mixing chamber 33, and the lower end of the communication hole 14 communicates with the second ignition hole 13. Through this kind of setting for can be by the intercommunicating pore 14 intercommunication between the first ignition hole 12 of parallel arrangement and the second ignition hole 13, at the in-process of ignition, the gas can be mutually complemented through the first ignition hole 12 of parallel arrangement and the second ignition hole 13, even if one of them appears by the problem such as overflow jam all the way, the gas of other way is also in time complemented, can also utilize the gas of other way to dredge the one way of jam simultaneously, the effectual ignition success rate that improves.

Specifically, as shown in fig. 3 and fig. 7, the second ignition hole 13 specifically includes a first flow section 131 and a second flow section 132 that are continuously disposed, where a communication end and an air outlet end of the second ignition hole 13 are disposed at ends of the first flow section 131 and the second flow section 132 that are far away from each other, respectively, and an inner diameter dimension of the first flow section 131 is smaller than an inner diameter dimension of the second flow section 132 to form a stepped second ignition hole 13. And the first end of the communication hole 14 is in particular connected to the second communication section 132 and is arranged adjacent to the first communication section 131. Through this kind of setting, when first ignition hole 12 and second ignition hole 13 all normally work, when gas is from first circulation section 131 transition to second circulation section 132, because the increase of internal diameter size, make its velocity of flow increase, flow to the end of giving vent to anger of second ignition hole 13 fast, avoid under normal condition, the inside that the inside gas of second ignition hole 13 enters into first ignition hole 12 through intercommunicating pore 14 for second ignition hole 13 and first ignition hole 12 each exert its effect, and make the gas flow of giving vent to anger the end respectively can normally meet, improve the performance of ignition, steady flame.

As shown in fig. 2-7, the inner ring fire cover is further provided with a plurality of flame stabilizing holes 15, and the flame stabilizing holes 15 uniformly encircle the side wall of the fire cover body 1 and are communicated with the secondary air mixing chamber 33. As described above, after the ignition needle is smoothly ignited, the flame stabilizing hole 15 is combined to perform the flame protection so that the gas stove can achieve smooth ignition in a stable state. The objective conditions such as the gas flow rate and the gas pressure corresponding to the flame stabilizing holes 15 are approximately equal to those of the first ignition holes 12, so that the flame stabilizing holes 15 are all penetrated on the side wall of the fire cover body 1 and are communicated with the secondary gas mixing chamber 33, and after the ignition needle is primarily ignited at the ignition end of the first ignition holes 12, the flame stabilizing holes 15 are utilized to further stabilize the flame of the first ignition holes 12, thereby realizing the integral ignition of the whole inner ring fire cover. However, in other alternative embodiments, the flame stabilizing holes 15 may be provided at other positions on the fire cover body 1 according to specific requirements, without any fixed limitation.

As shown in fig. 5 and 6, vertical diversion trenches 17 and diversion blocking trenches 18 are further disposed on the peripheral wall surface of the fire cover body 1, wherein the number of the vertical diversion trenches 17 is two, the two vertical diversion trenches 17 are disposed on two sides of the ignition end of the first ignition hole 12 in the circumferential direction of the fire cover body 1, and the diversion blocking trenches 18 are communicated with the vertical diversion trenches 17 on two sides of the ignition end of the first ignition hole 12 and extend to the adjacent main fire hole 11 along the circumferential direction of the fire cover body 1. By the arrangement, when the pot above the inner ring fire cover generates the overflow liquid, the overflow liquid can be guided by the vertical guide groove 17 when the overflow liquid sticks to the wall and flows along the wall surface towards the direction of the first ignition hole 12, so that the risk of blocking the first ignition hole 12 is reduced; in addition, when the overflow is further increased, the overflow can be guided to the position of the main fire hole 11 by using the guide blocking groove 18, and the main fire hole 11 is not blocked easily because the main fire hole 11 has larger aperture and larger flame.

As shown in fig. 2, 3 and 8, in this embodiment, the fire cover body 1 and the top cover 2 are detachably connected, so that the whole inner ring fire cover is simpler and more convenient to process and assemble. However, in other alternative embodiments, the fire cover body 1 and the top cover 2 may be integrally formed. In addition, the outer radial dimension of the top cover 2 is larger than the outer radial dimension of the fire cover body 1, and the top cover 2 is formed with a shielding eave 21 extending outward in the radial direction thereof corresponding to the ignition end position of the first ignition hole 12. Through this kind of setting for top cap 2 not only can cooperate fire lid body 1 to form secondary gas mixing cavity 33, can also utilize it to shelter from eaves 21 as the safety cover of first firing hole 12, can block most pan overflow to the effectual firing end that prevents first firing hole 12 contacts the overflow.

As described above, the burner is provided with the ignition needle corresponding to the inner ring fire cover, the tip of the ignition needle is specifically disposed on the air-outlet flow path of the first ignition hole 12 at the ignition end thereof, when the fuel gas passes through the inner ring fire cover and is ejected from the ignition end of the first ignition hole 12 thereof, the fuel gas can be ignited by being matched with the tip of the ignition needle, and the ignition stability and the ignition success rate can be improved. Further, the gas cooker comprising the burner can avoid the dual influences of the dragging of the first ignition hole 12 of the inner ring fire cover by the fire hole 11 and the gas pressure stability in the use process, thereby improving the ignition stability and the ignition success rate of the whole gas cooker.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (12)

1. The utility model provides an inner ring fire lid, its is including fire lid body and top cap, fire lid body with the top cap encloses to establish and forms the gas mixing cavity, its characterized in that, inner ring fire lid still includes:

the baffle part is arranged in the fire cover body and divides the gas mixing cavity into a primary gas mixing cavity and a secondary gas mixing cavity which are adjacent to each other in the axial direction of the inner ring fire cover, wherein the secondary gas mixing cavity is relatively close to the top cover;

The primary gas mixing cavity comprises a first gas channel and a second gas channel which are mutually independent, one end of the first gas channel, which is close to the top cover, penetrates through the baffle part and is communicated with the secondary gas mixing cavity, the main fire hole of the inner ring fire cover is communicated with the second gas channel, and the first ignition hole of the inner ring fire cover is communicated with the secondary gas mixing cavity.

2. The inner ring fire cover of claim 1 wherein the opening corresponding to the end of the first gas passage through which the barrier is provided is disposed toward the top cover, and the first ignition hole is provided through the side wall of the fire cover body.

3. The inner ring fire cover as claimed in claim 2, wherein the blocking part is arranged in parallel with the top cover in the fire cover body, one end of the first gas channel close to the top cover vertically penetrates through the blocking part, and the first gas channel, the fire cover body and the blocking part enclose to form the second gas channel.

4. The inner ring fire cover of claim 1 further comprising a second ignition hole, said second ignition hole penetrating through the side wall of said fire cover body and said barrier, said second ignition hole communicating at its communicating end with said first gas passage, said second ignition hole having an air flow at its air outlet end intersecting with said first ignition hole having an air flow at its ignition end.

5. The inner annular fire cover of claim 4 wherein the communication end of the first ignition hole communicates with the secondary mixing chamber, the ignition end of the first ignition hole being located on the outer sidewall of the fire cover body, at least one of the first ignition hole and the second ignition hole being disposed at a downward incline on the sidewall of the fire cover body.

6. The inner annular fire cover of claim 4 further comprising a communication hole, a first end of the communication hole being in communication with the second ignition hole, a second end of the communication hole being in communication with the secondary air mixing chamber and disposed adjacent to a communication end of the first ignition hole.

7. An inner ring fire cover as claimed in claim 6 wherein the second ignition hole includes a first flow section and a second flow section arranged in series, the flow end and the air outlet end of the second ignition hole being respectively arranged at the ends of the first flow section and the second flow section remote from each other, the first flow section having an inner diameter smaller than the second flow section;

The first end of the communication hole is communicated with the second communication section and is arranged adjacent to the first communication section.

8. The inner ring fire cover of any one of claims 1-7 further comprising a plurality of flame stabilizing holes, wherein a plurality of the flame stabilizing holes are all arranged on the side wall of the fire cover body in a penetrating manner and are communicated with the secondary air mixing chamber.

9. The inner ring fire cover according to any one of claims 1 to 7, wherein a vertical guide groove and a guide blocking groove are provided at the periphery of the fire cover body, the vertical guide groove being provided on both sides of the ignition end of the first ignition hole in the circumferential direction of the fire cover body, the guide blocking groove communicating with the vertical guide groove on both sides of the ignition end of the first ignition hole and extending to an adjacent main fire hole position in the circumferential direction of the fire cover body.

10. The inner ring fire cover of claim 9 wherein the outer radial dimension of the top cover is greater than the outer radial dimension of the fire cover body, and wherein the top cover corresponds to the ignition end position of the first ignition hole and extends outwardly in the radial direction thereof to form a shielding eave;

And/or the fire cover body and the top cover are detachably connected.

11. A burner, the burner comprising:

An inner ring fire cover as claimed in any one of claims 1 to 10;

and the top end of the ignition needle is positioned on the air outlet flow path of the first ignition hole at the ignition end of the ignition needle.

12. A gas hob, characterized in, that the gas hob includes a burner as claimed in claim 11.