CN214891182U - Gas distribution plate, combustor and gas stove - Google Patents

Abstract

The application relates to the technical field of gas cooking utensils, discloses a gas distribution dish, includes: a plurality of concentrically arranged annular members with an air flow passage provided between adjacent annular members, the annular members including at least an outer annular member, an inner annular member, and an intermediate annular member; the air inlet end of the first air supplement channel is arranged on the outer peripheral side of the air distribution plate, and the air outlet end at least extends to the air flow channel between the outer annular member and the middle annular member; and the second air supplement channel is formed by extending from the bottom of the air distribution disc from outside to inside, the air inlet end of the second air supplement channel is arranged on the outer peripheral side of the air distribution disc, and the air outlet end of the second air supplement channel at least extends to the air flow channel between the inner annular component and the middle annular component. The gas distribution plate provided by the embodiment of the disclosure can improve the combustion sufficiency of gas and the heating uniformity of a cooker by adding the first air supplement channel and the second air supplement channel. The application also discloses a combustor and a gas stove.

Description

Gas distribution plate, combustor and gas stove

Technical Field

The application relates to the technical field of gas cookers, for example to a gas distribution plate, a burner and a gas stove.

Background

Nowadays, a gas stove is popularized to kitchen environments of thousands of households as a convenient and fast cooking appliance, and a burner of the gas stove can utilize gas fuels such as liquefied petroleum gas, artificial gas, natural gas and the like to perform direct-fire heating, so that a cooking pot can be rapidly heated. As for the existing combustor component parts, the combustor generally comprises a combustor (comprising a furnace end, a gas distribution disc, a fire cover and the like), a control valve, an igniter, an injection pipe and the like, the working process of the combustor is that fuel gas supplied by an external fuel gas pipe or a fuel gas tank is conveyed to the combustor through the control valve and the injection pipe, the igniter ignites the fuel gas at the combustor to generate heat, and in the process, the control valve can adjust the conveyed fuel gas flow so as to further realize the control of the fire power.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the gas of gas-cooker will generally mix a part of air before flowing into the furnace end, and the gas after mixing is erupted from the burner cap and is ignited by the lighter and forms the flame at the same time, and the air of premixing can play the combustion-supporting effect of increasing the oxygen volume in this process. Here, the gas not only reacts with oxygen in the air of premixing, simultaneously also can take place the combustion reaction with the air around the fire lid after the blowout, consequently, the air quantity near the fire lid can influence flame combustion effect, current combustor is mostly two rings of fire or three rings of fire, set up two rings of fire holes or three rings of fire holes from inside to outside on covering promptly, the fire hole that is in outer lane position is more with the air contact around, consequently, combustion effect is better, and the fire hole that is in the inner circle position is few with the air contact around, the burning of inner circle flame is not enough up to the time, not only cause the waste of gas energy, also easy bottom of a boiler is heated inequality simultaneously, edible material is heated inhomogeneously.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a gas distribution plate, a combustor and a gas stove, which can improve the combustion sufficiency of gas and the heating uniformity of a stove.

In some embodiments, the gas distribution plate comprises: the gas burner comprises a plurality of concentrically arranged annular members, wherein a gas channel is constructed in part or all of the annular members, air flow channels which axially penetrate through the adjacent annular members and are arranged at intervals along the circumferential direction are arranged between the adjacent annular members, and the annular members at least comprise outer annular members at the outer side, inner annular members at the inner side and middle annular members between the outer annular members and the inner annular members; a first air supplement channel which is formed by extending from the bottom of the air distribution disc from outside to inside, wherein an air inlet end of the first air supplement channel is arranged on the outer peripheral side of the air distribution disc, and an air outlet end of the first air supplement channel at least extends to a position between the outer annular member and the middle annular member; and the second air supplement channel is formed by extending from the bottom of the air distribution disc from outside to inside, the air inlet end of the second air supplement channel is arranged on the outer peripheral side of the air distribution disc, and the air outlet end of the second air supplement channel at least extends to the position between the inner annular member and the middle annular member.

In some embodiments, the burner includes a gas distribution plate as shown in the above embodiments.

In some embodiments, the gas burner comprises a gas burner as shown in the above embodiments.

The gas distribution disc, the burner and the gas stove provided by the embodiment of the disclosure can realize the following technical effects:

the gas distribution plate provided by the embodiment is provided with a plurality of annular components, the inner parts of the annular components can be used for conveying gas, air can be supplemented around different annular components on the inner side and the outer side respectively by adding the first air supplementing channel and the second air supplementing channel, so that the air amount of the corresponding space of the annular components on the inner side and the outer side is increased, more air can be supplied when gas combustion is carried out on the fire holes of the fire cover corresponding to the annular components, and the combustion sufficiency of the gas and the heating uniformity of a cooker can be improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is an exploded view of a gas distribution plate according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a gas distribution plate according to an embodiment of the present disclosure;

fig. 3 is an exploded view of a gas distribution plate according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram illustrating an exploded view of another gas distribution plate provided by embodiments of the present disclosure;

FIG. 5 is a schematic diagram illustrating an exploded view of another gas distribution plate provided by embodiments of the present disclosure;

FIG. 6 is a schematic structural view of a lower gas distribution plate of another gas distribution plate provided in the embodiments of the present disclosure;

FIG. 7 is a schematic structural view of a lower gas distribution plate of another gas distribution plate provided in the embodiments of the present disclosure;

FIG. 8 is a schematic diagram illustrating an exploded view of another gas distribution plate provided by embodiments of the present disclosure;

FIG. 9 is a schematic diagram illustrating an exploded view of another gas distribution plate provided by embodiments of the present disclosure;

FIG. 10 is a schematic diagram illustrating an exploded view of another gas distribution plate provided by embodiments of the present disclosure;

FIG. 11 is an exploded view of another gas distribution plate provided in accordance with embodiments of the present disclosure;

FIG. 12 is a schematic structural view of a lower gas distribution plate of another gas distribution plate provided in the embodiments of the present disclosure;

FIG. 13 is a schematic structural view of another air distribution plate provided in the embodiments of the present disclosure;

FIG. 14 is a schematic structural view of a gas supply structure for a burner according to an embodiment of the present disclosure;

fig. 15 is an exploded view of another gas supply structure for a burner according to an embodiment of the present disclosure.

Reference numerals:

100. a fire cover; 101. a first annular fire sub-cap; 102. a second annular fire cover; 103. a central fire cover;

200. a gas distribution plate; 2001. an air intake passage; 2002. a gas distribution channel; 201. an inner ring air inlet; 202. a middle annular air inlet groove; 2021. a middle ring air inlet; 203. an outer annular inlet slot; 2031. an outer ring air inlet; 204. an inner ring gas separation port; 205. a first gas distribution channel; 206. a second gas distribution channel; 207. a third air distribution channel; 208. a fourth air distribution channel; 209. a central gas distribution channel; 210. a lower gas distribution plate; 211. a lower tray body; 2111. a tray wall; 212. an inner annular member; 213. a middle annular member; 214. an outer annular member; 220. an intake partition member; 221. an air inlet cavity; 2211. an outer intake passage; 2212. an inner intake passage; 2213. a second type intake passage; 2214. a third type of intake passage; 222. A partition member; 230. a first intake zone; 231. a first air intake passage; 2311. a first radial air intake portion; 2312. A first circumferential air intake portion; 232. a second intake passage; 233. a central air intake passage; 2321. a second radial inlet portion; 2322. a second circumferential intake portion; 240. a first partitioning rib; 241. a first arc segment; 242. a first straight line segment; 2421. a first side first straight line segment; 2422. a second side first straight line segment; 243. a first bending section; 244. a second bending section; 250. a second partitioning rib; 251. a second arc segment; 252. a second straight line segment; 260. a third annular partition rib; 270. an air supplement channel; 271. an air make-up inlet; 272. an inboard air inlet passage; 273. an outside air inlet passage; 274. an air outlet side passage; 275. an inboard air supplement outlet; 276. an outside air make-up outlet; 280. an air deflector; 281. an arc baffle; 282. a straight plate; 290. an upper gas distribution plate; 291. an upper tray body; 292. a mating member; 293. an inner ring member; 294. a first annular gas distribution member; 295. a second annular gas distribution member; 296. a third annular gas distribution member; 297. a fourth annular gas distribution member; 298. a ramp structure; 2901. a first air outlet; 2902. a second air outlet; 2903. a third air outlet; 2904. a fourth air outlet;

300. a furnace end; 310. a gas mixing cavity; 301. a first annular gas mixing cavity; 302. a second annular gas mixing cavity; 303. a central annular gas mixing cavity; 320. an injection pipe;

400. an air intake assembly; 410. an air inlet pipe.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.

Herein, the term "plurality" means two or more, unless otherwise specified.

Herein, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B represents: a or B.

Herein, the term "and/or" is an associative relationship describing objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Generally, the gas distributor 200 is used in cooperation with the burner head and the fire cover 100 of the burner, and an alternative assembly method is to arrange the gas distributor between the burner head 300 and the fire cover 100 and to connect the intermediate flow paths of the gas (or the mixed gas of air and gas) of the burner head 300 and the fire cover 100, so that the gas enters the gas distributor from the burner head 300 and then flows into the fire cover 100, and finally is ignited at the fire holes of the fire cover 100 to form flames.

Here, for the heating area and the heating homogeneity of the container of improvement combustor above putting into fire lid 100, optionally, the fire lid generally comprises two or more than two sub fire lids of annular, the coaxial setting of the sub fire lid of different annular and from inside to outside overlap in proper order and establish, be provided with a plurality of fiery holes on each sub fire lid of annular respectively, a plurality of fire holes are along the even arrangement of this sub fire lid circumference of annular for a plurality of fire holes on each sub fire lid of annular can be formed with an annular flame respectively, a plurality of annular flame can heat the container in its respective corresponding ring line position.

Optionally, one or more groups of fire holes respectively located on different circular lines are arranged on the same annular sub-fire cover, and each group of fire holes can respectively form an annular flame on the ring where the fire holes are located.

Correspondingly, the gas distribution plate 200 has a plurality of gas flow channels for gas to flow, and after the gas enters the gas distribution plate 200 through the furnace end, the gas can flow through the plurality of gas flow channels and is finally distributed to the annular sub-fire covers corresponding to the fire covers, so as to supply gas to the fire holes in different annular positions respectively. In this embodiment, the furnace end has a plurality of mutually independent annular air mixing cavities, and a plurality of annular air mixing cavities set up with one heart and from inside to outside overlap in proper order and establish, and each annular air mixing cavity intercommunication divides one or more air current passageway of gas disk, and the air feed that also each annular air mixing cavity in the furnace end has or not state, can decide respectively and have or not the gas supply in the one or more air current passageway that correspond separately, and then influence whether each air current passageway corresponds the sub-fire lid of annular and can form flame.

For example, if no gas is supplied to a certain annular gas mixing cavity, no gas flows through the corresponding gas flow channel, so that no flame is formed on the ring line of the corresponding annular sub-fire cover; on the contrary, if the annular gas mixing cavity is supplied with gas, flame can be formed on the circular line of the corresponding annular sub-fire cover. Meanwhile, the size of flame formed on the corresponding annular sub-fire cover can be determined according to the gas flow from the annular gas mixing cavity, and generally, the gas flow and the flame size form a positive correlation relationship. Therefore, whether the flame is formed or not and the size of the flame can be controlled by adjusting the gas supply state of the annular gas mixing cavity.

The embodiment of the present disclosure provides a gas distribution plate 200, which includes an air inlet portion and a gas distribution portion that are communicated with each other. The gas inlet part can be used for being communicated with the side of the annular gas mixing cavity so as to introduce the fuel gas from the annular gas mixing cavity into the gas distribution disc 200 and convey the fuel gas to the gas distribution part; the gas distribution part can be used for being communicated with the fire cover side so as to supply the fuel gas introduced by the gas inlet part to the corresponding annular sub fire covers respectively.

In the present embodiment, the air intake portion includes a plurality of air intake passages 2001, each air intake passage 2001 extends from inside to outside, and taking the structure of the air distribution plate 200 shown in the drawing as an example, the inside to outside extension means that the air intake passages 2001 extend substantially from the position of the center of the circle (or near the center of the circle) to the outer circumferential direction, and an alternative extending direction shown in the embodiment is to extend in the radial direction of the air distribution plate.

Generally, the inner and outer extension lengths of the air inlet channel 2001 are determined by the ring line positions of the corresponding burner annular air mixing cavity and/or the annular sub-fire cover, so as to ensure that the air inlet channel 2001 can at least communicate with the corresponding burner annular air mixing cavity and can at least deliver the fuel gas to the ring line positions of one or more corresponding annular sub-fire covers.

In this embodiment, the gas distribution portion includes gas distribution channels 2002 located in different circular lines from inside to outside, and the gas distribution channels 2002 on some or all of the non-adjacent circular lines are communicated with the same gas inlet channel 2001.

The gas distribution plate provided by this embodiment communicates the gas distribution channels 2002 on part or all of the non-adjacent loops of the gas distribution portion with the same gas inlet channel 2001, so that at least one gas inlet channel 2001 can respectively convey gas to the fire hole rings respectively corresponding to the gas distribution channels 2002 of different loops, and thus when the gas flow rate of the gas inlet channel 2001 changes, the gas of the corresponding gas distribution channel 2002 and the corresponding fire hole ring can also change simultaneously, and meanwhile, because the loops of the fire hole rings corresponding to the same gas inlet channel 2001 are located at different inner and outer heating positions, the gas flow rate adjustment for a single gas inlet channel 2001 can simultaneously realize synchronous adjustment of firepower at different inner and outer heating positions, thereby effectively improving heating uniformity and reducing complexity of operation.

Optionally, the number of the circular lines of the gas distribution channels 2002 is the same as the number of the circular lines of the fire holes in the fire cover, and meanwhile, the positions of the circular lines distributed on the gas distribution channels 2002 correspond to the positions of the circular lines of the fire holes, so that each gas distribution channel 2002 can convey fuel gas to a group of fire holes in the corresponding position.

Optionally, the number of the gas distribution channels 2002 corresponding to each loop is one or more; the gas distribution channels 2002 corresponding to the same loop line are uniformly distributed along the loop line, so that gas can uniformly enter the annular sub-fire cover from the gas distribution channels 2002 at different positions of the loop line, and the uniformity and stability of fire power distribution of flame are guaranteed.

In an alternative embodiment, the gas distributor 200 is integrally constructed as a disc-shaped semi-enclosed housing that fits the annular gas mixing chamber and the fire lid, and the gas inlet portion and the gas distributor portion are formed in the housing.

Optionally, the air inlet passage 2001 is formed inside the housing, and one or more air inlet notches for communicating the annular air mixing chamber are formed in the bottom surface of the housing; optionally, each air inlet passage 2001 corresponds to an independent air inlet notch, so that each air inlet passage 2001 can be communicated with the annular air mixing cavity through the air inlet notch, and the fuel gas enters the air inlet passage from the annular air mixing cavity through the air inlet notch.

In some embodiments, the air inlet notches of the plurality of air inlet passages 2001 are disposed on the circle center side of the air distributor 200 and are disposed corresponding to the positions of the respective corresponding annular air mixing chambers. For example, the air inlet passage 2001 includes a first air inlet passage and a second air inlet passage, wherein the first air inlet passage corresponds to the annular air mixing chamber on the inner side of the burner, and the second air inlet passage corresponds to the annular air mixing chamber on the outer side of the burner, so that the circular line of the air inlet notch of the first air inlet passage is arranged on the inner side of the circular line of the air inlet notch of the second air inlet passage.

In the structure of the gas distributor 200 shown in fig. 1, 4, 6 and 8, the inlet slots of the inlet channels 2001 are arranged on the circle center side of the gas distributor 200, which is defined as a first type of inlet channels, i.e. the inlet ends of the first type of inlet channels are arranged on the circle center side and the outlet ends are arranged on the circumference side, and the main flowing direction of the gas after entering the gas distributor 200 is from the circle center side to the circumference side.

In still other embodiments, as shown in fig. 13, the intake form of the intake passage 2001 may also be the second type of intake passage 2213 and/or the third type of intake passage 2214.

Here, the air inlet end of the second type air inlet passage 2213 is arranged on the circumferential side, and the air outlet end at least comprises an end arranged on the circle center side, that is, the main flowing direction of the fuel gas flowing through the air distribution plate via the second type air inlet passage 2213 is from the element circumferential side to the circle center side.

The inlet end of the third type inlet passage 2214 is arranged on the middle ring, and the outlet end at least comprises a circle center side and a circumference side, that is, the main flowing direction of the gas flowing through the gas distribution plate via the third type inlet passage 2214 is from the middle ring position to the circle center side and the circumference side.

The second type inlet passage 2213 and the third type inlet passage 2214 are arranged at positions close to the outer peripheral sides of the inlet ends, so that the flowing distance of the gas flowing from the inlet ends to the outer peripheral sides can be shortened, and the pressure loss of the gas flowing in the inlet passages can be reduced because the outer peripheral sides require more gas; further, the reduction of the flow path also makes it possible to reduce the speed of the flow of the fuel gas toward the outer ring side burner ring after the opening of the burner, thereby improving the ignition response speed of the burner ring on the outer ring side at the time of ignition of the burner.

The gas tray that this embodiment provided is provided with one kind or several kinds of different inlet channel structural style for the gas can be with the business turn over air flow path flow through the gas tray that divides of difference, and then to the gas channel that divides of the different loop line that corresponds separately carrying the gas, different inlet channel structural style can be suitable for respectively to divide the differentiation air feed demand of gas channel more than two or two, promote to divide the homogeneity and the gas flow, the stability of pressure that send the gas to different gas channel branches, thereby can effectively ensure the combustion effect of gas-cooker.

Alternatively, as shown in fig. 13, the intake passages are configured in a circle-symmetrical structure, where positions of the same intake passage of the intake passages communicate with each other and share the same intake end through which the gas flows into the intake passage and then flows to the positions of the intake passage.

Optionally, for an air distributor provided with two or more than two air inlet passages, for example, a certain air distributor is provided with the first type air inlet passage and the second type air inlet passage 2213 at the same time, or a certain air distributor is provided with the first type air inlet passage, the second type air inlet passage 2213 and the third type air inlet passage 2214 at the same time; different air inlet channels are alternately arranged along the circumferential direction so as to ensure the combustion uniformity of the fire hole rings corresponding to the air inlet channels of different types as much as possible.

Optionally, for the second type of air inlet passage 2213 and the third type of air inlet passage 2214, since the air inlet end is far away from the air distribution plate, if a lantern ring type annular air mixing cavity air supply manner is still adopted, there may be a problem that the air inlet end cannot correspond to the annular air mixing cavity, in some embodiments, a plurality of injection pipes 320 of the burner may be communicated with different air inlet passages of the air distribution plate in a one-to-one correspondence manner, so as to directly supply air to the corresponding air inlet passages through the injection pipes 320.

Optionally, the air inlet end of the air inlet channel is configured to be matched with the caliber of the fuel gas outlet of the injection pipe 320.

Generally, the axes of the injection pipes 320 are located in the same plane, so that in order to reduce the structural interference influence between the injection pipes 320 in the arrangement form that the injection pipes 320 are directly communicated with the gas distribution plate, at least two injection pipes 320 are arranged at an included angle, and the included angle may be 20 °, 60 °, 90 °, 120 ° or the like.

Exemplarily, as shown in fig. 13, 3 ejector pipes 320 are provided in the embodiment of the present disclosure, wherein 2 ejector pipes 320 are arranged in parallel to each other, and these 2 ejector pipes supply air to the central air inlet passage and the third air inlet passage respectively, and because the 3 rd ejector pipe corresponds to the second air inlet passage, the 3 rd ejector pipe 320 that is parallel to other ejector pipes 320 is structurally interfered with the ejector pipe 320 that supplies air to the central air inlet passage, so that this 3 rd ejector pipe 320 is arranged at an included angle of 90 ° with respect to the other 2 ejector pipes 320.

In another alternative, the gas distribution channel is opened on the top surface of the housing, where the gas distribution channel functions as a "gas outlet" of the gas distribution plate, and the gas from the gas inlet channel can flow out of the gas distribution plate from the gas distribution channel corresponding to the gas inlet channel and then enter the fire cover.

The gas distribution plate of the embodiment of the present disclosure generally includes a lower gas distribution plate 210 and an upper gas distribution plate 290, and the lower gas distribution plate 210 and the upper gas distribution plate 290 are sealably connected to prevent leakage of gas flowing therethrough. Alternatively, after the two are fastened, a threaded connection or a welded connection can be adopted.

Optionally, the connecting end surfaces of the lower air distribution plate 210 and the upper air distribution plate 290 are planar. The sealing performance of the connection is improved.

Optionally, the lower gas distributor plate 210 is a casting or a forged part.

In the embodiment of the present disclosure, the provided gas distribution trays are mainly classified into three types according to the structure of the lower gas distribution tray 210.

Referring to fig. 1 to 3, a first type of gas distribution plate provided in the embodiments of the present disclosure is described, which includes a lower gas distribution plate 210 and an upper gas distribution plate 290, where the lower gas distribution plate 210 has one or more gas inlet partitions, and each gas inlet partition is provided with a partition structure for partitioning the gas inlet partition into a plurality of gas inlet channels; the upper gas distribution plate 290 comprises gas distribution channels located on different circular lines from inside to outside, and the gas distribution channels of part or all of the non-adjacent circular lines are communicated with the same gas inlet channel.

The first kind of gas dish that divides of this disclosed embodiment, through the setting of the subregion of admitting air on the lower gas dish 210 for the gas that gets into by an air inlet on the lower gas dish 210 can be shunted to the gas channel that divides on the different loop lines on the last gas dish 290 of dividing, the gas area of dividing of gas has been enlarged, the reposition of redundant personnel area of gas has been enlarged, the variety of the mode of putting out a fire has been increased, the flexibility of heating area has been increased, can satisfy multiple culinary art demands, for example, fry in shallow oil, cook the heating scene such as searing.

In some embodiments, the lower gas distribution plate 210 comprises a lower plate body 211, one or more gas inlet partition members, and a partition member 222, the lower plate body 211 having an inner ring gas inlet 201 and a plurality of annular gas inlet slots; each air inlet partition member has an air inlet cavity 221 and is arranged on the lower disc body 211 along the radial direction of the lower disc body 211; the partition member 222 is disposed in the intake chamber 221 of the intake partition member, and partitions the intake chamber 221 into a plurality of intake passages; and one air inlet passage is correspondingly communicated with one annular air inlet groove of the lower disc body 211.

In this embodiment, the burner further includes an annular air mixing cavity located at the center of the circle, the inner ring air inlet 201 is a central air inlet channel as an air distribution disc and communicated with the annular air mixing cavity, the central air inlet channel is formed by extending along the central axis of the air distribution disc, the lower end of the central air inlet channel is an air inlet end, the upper end of the central air inlet channel is an air outlet end, and the gas flows through the central air inlet channel from bottom to top.

In this embodiment, the number of the annular intake grooves of the lower disc 211 is equal to the number of the intake passages partitioned in the intake partition member, and one intake passage is correspondingly communicated with one annular intake groove. Then, the fuel gas that every annular air inlet groove inserts flows into the branch gas passageway on the nonadjacent ring line through corresponding inlet channel, has realized the branch gas of one-to-many, has increased the flexibility of dividing the gas.

In some embodiments, the lower disc 211 includes a disc wall 2111 and a plurality of annular members, a through hole is provided at the center of the disc wall 2111, and the plurality of annular members are concentrically provided on the disc wall 2111 to form the inner ring air inlet 201 and the plurality of annular air inlet grooves. In this embodiment, the through holes on the surrounding plate wall 2111 of the innermost annular member form the inner-ring air inlet 201, and the remaining annular members are concentrically arranged to form a plurality of annular air inlet grooves. In this embodiment, a plurality of annular air inlet grooves provided on the tray wall 2111 of the lower tray body 211 are butted with the air outlet of the burner to receive the gas. The number of the annular air inlet grooves is determined according to actual requirements.

Optionally, the annular member is an annular rib member having a height.

Optionally, the number of annular inlet slots is 2. As shown in fig. 2, the inner annular member 212 surrounds the through hole in the disk wall 2111, the middle annular member 213 and the outer annular member 214 are concentrically disposed on the disk wall 2111 in this order from the inside to the outside, and the outer annular member 214 is disposed on the edge of the disk wall 2111, and the inner ring intake port 201, the middle annular intake groove 202, and the outer annular intake groove 203 are formed in this order on the lower disk 211.

Alternatively, the intake chamber 221 of the intake partition member is partitioned into two intake passages by the partition member 222; respectively, defined as an outer intake passage 2211 and an inner intake passage 2212. The outer intake passage 2211 communicates with the outer annular intake groove 203, and the inner intake passage 2212 communicates with the middle annular intake groove 202.

Alternatively, the plate wall 2111 of the lower plate 211 is a curved surface, and a plurality of annular members are disposed on the concave wall surface, and the intake partition member is disposed on the convex wall surface of the lower plate 211.

Optionally, an air replenishment passage 270 is formed between a portion of the outwardly convex wall surface of the tray wall 2111 of the lower tray body 211 and the intake partition member. As shown in fig. 1, an air supply passage 270 is formed between a part of the outer convex wall surface of the tray wall 2111 of the lower tray body 211 and the outer walls of two adjacent intake partition members. An air supplement outlet is provided at a corresponding position on the upper air distribution plate 290. The contact amount of the fuel gas with the air in the combustion process is improved, and the combustion efficiency is improved.

Optionally, the air make-up channel 270 includes a first air make-up channel and a second air make-up channel.

Wherein, the first air supplement channel is formed by extending from the bottom of the air distribution disk from outside to inside, the air inlet end of the first air supplement channel is arranged at the outer periphery side of the air distribution disk, and the air outlet end of the first air supplement channel at least extends to the space between the outer annular member 214 and the middle annular member 213; the first air supplement channel is used for conveying air to the interval formed between the circular lines where the first air distribution channel and the second air distribution channel are respectively located, and the first air supplement channel extends and forms along the circumferential direction of the circular line where the first air supplement channel is located.

The second air supplement channel is formed by extending from the bottom of the air distribution disc from outside to inside, the air inlet end of the second air supplement channel is arranged on the outer peripheral side of the air distribution disc, the air outlet end of the second air supplement channel at least extends to the position between the inner annular component 212 and the middle annular component 213 and is used for conveying air to the interval formed between the circular lines of the second air distribution channel and the third air distribution channel, and the second air supplement channel extends and is formed along the circumferential direction of the circular line of the second air distribution channel and the third air distribution channel.

Here, the air supplement channel 270 can increase the amount of air around its corresponding at least one burner ring to promote more complete combustion of the gas.

The plurality of air inlet channels are uniformly distributed at intervals along the circumferential direction, and the air outlet ends of the first air supplement channels are surrounded by the adjacent air inlet channels, the outer annular member and the middle annular member; the adjacent air inlet channel, the inner annular member and the middle annular member jointly enclose an air outlet end of the second air supplement channel.

In yet another alternative (not shown in the figures), the first air supplement channel is concavely formed relative to the bottom surface of the air distribution plate and is positioned between two adjacent air inlet channels; similarly, the second air supplement channel is concavely formed relative to the bottom surface of the air distribution plate and is positioned between two adjacent air inlet channels. The concave forming mode can reduce the protrusion of the bottom surface of the lower air distribution plate 210 and improve the pressure resistance of the air distribution plate.

In this embodiment, the first air supplement channel is gradually folded from the outside to the inside, and the second air supplement channel is gradually folded from the outside to the inside. Illustratively, the first air makeup channel body is a flared or tapered concave configuration.

In some alternative embodiments, the plurality of first air supplement channels are uniformly arranged along the circumferential direction of the air distribution plate, and/or the plurality of second air supplement channels are uniformly arranged along the circumferential direction of the air distribution plate. So that the air can be uniformly supplemented from a plurality of positions in the circumferential direction of the air distribution plate to the inner side, and the stability and uniformity of flame combustion are further ensured.

In the embodiment of the present disclosure, the number of the intake partition members is not limited, and may be determined according to actual needs. Optionally, the intake partition member is 1, 2, 3, 4 or more. When the number of the intake partition members is plural, the intake partition members are uniformly distributed on the lower disc 211 in the radial direction around the center of the lower disc 211.

Alternatively, when there are a plurality of intake partition members, the end surfaces of the intake chambers 221 of the plurality of intake partition members are located on the same horizontal plane, which is the connecting end surface of the lower air distribution plate 210. Improving the sealing connection with the connecting end surface of the upper gas distribution plate 290.

In some embodiments, the intake partition member extends radially of the lower disc 211 to the outside of the lower disc 211. The gas distribution area of the gas distribution plate is increased.

In the embodiment of the present disclosure, the structure of the intake partition member is not limited, and the intake air may be guided into the air distribution passage of part or all of the non-adjacent circular lines of the upper air distribution plate 290.

In some embodiments, in the radial direction of the lower disk body 211, the bottom wall of the intake partition member is bent toward the upper air distribution disk 290 side and the circumferential width of the intake chamber 221 is enlarged. That is, the bottom wall of the inlet channel is curved to be close to the side of the upper gas distribution plate 290, the inlet gas is guided to flow to the upper gas distribution plate 290, and the expanded inlet channel is used for buffering the outlet pressure, so that the gas can more smoothly enter the gas distribution channel of the upper gas distribution plate 290. In this embodiment, the air intake partition member is in a bucket shape, and a cavity of the bucket-shaped air intake partition member is the air intake cavity 221.

In some embodiments, the intake chamber 221 of the intake partition member includes a radial portion and a circumferential portion, the circumferential portion being located on the outside and the circumferential portion having a circumferential width greater than the radial portion; each of the intake passages (the inner intake passage 2212 and the outer intake passage 2211) partitioned by the partition member 222 includes a radial extension and a circumferential extension that communicate. The peripheral circumferential structure of the air inlet partition is increased, the air distribution area of the outer ring can be increased, meanwhile, the supporting area of the upper air distribution disc 290 is also increased, and the structure of the air distribution disc is more stable.

Optionally, the radial extension portion is formed by extending from inside to outside along the radial direction of the gas distribution plate, and each gas distribution channel is communicated with the corresponding radial extension portion.

Optionally, the air inlet cavity 221 is shaped like a letter "7" as a whole, and the air inlet channel is also shaped like a letter "7".

Optionally, the plurality of air inlet channels are evenly arranged along the circumferential direction at equal radian intervals. Use the inlet channel who corresponds the same ring line and divide the combination of gas channel as the example, the quantity that corresponds the inlet channel who sets up in this embodiment is 4, 4 inlet channels mix the gas chamber air feed and to the same a plurality of annular branch gas channel air feeds by same annular, consequently evenly arrange 4 inlet channels along circumference and radian interval each other equals, can make the gas that divides gas channel output on each ring line can be in the more even distribution of circumference, improve the air feed stationarity.

Optionally, the radial portion of the intake chamber 221 also tends to expand radially, and the radial extension portion of each intake passage also gradually expands from inside to outside, and the passage cross-sectional area gradually increases, such as the radial extension portion is flared, tapered, and the like.

Here, the circumferential length of the outer ring line is greater than the circumferential length of the inner ring line, and if the flame intensity of the fire hole rings corresponding to the inner and outer ring lines is to be maintained in a close range, the required gas quantity is greater because the number of the fire holes corresponding to the outer ring line is generally greater than the number of the fire holes corresponding to the inner ring line, so that the expanding structure can increase the cross-sectional area of the channel located radially outside the radially extending portion to increase the gas quantity corresponding to the outer ring line.

In some embodiments, the dividing member 222 has a shape of "7", and one "7" shaped dividing member 222 is disposed in the intake chamber 221 to divide two or more intake passages.

Optionally, a "7" -shaped partition member 222 is disposed inside the "7" -shaped intake cavity 221 in a conformal manner, and divides the radial portion and the circumferential portion of the intake cavity 221 into two parts, so as to partition and form two "7" -shaped intake channels. As shown in fig. 1, a 7-shaped partition member 222 is provided at a circumferential portion of the intake chamber 221 in a lateral direction and at a radial portion of the intake chamber 221 in a vertical direction, thereby partitioning two intake passages.

Optionally, the passage centre line of the radially extending portion of the inlet passage is an arc or a straight line.

Optionally, the partition member 222 is a partition rib plate, which is vertically disposed in the intake chamber 221. The volume of the partition member 222 in the intake chamber 221 is reduced, increasing the intake air amount.

Alternatively, the upper end surface of the vertically arranged partition member 222 is flush with the end surface (upper end surface) of the intake chamber 221. The sealing performance of each air inlet channel constructed after the lower air distribution plate 210 is connected with the upper air distribution plate 290 is improved.

In the embodiment of the present disclosure, in the lower gas distribution plate 210, the communication manner between the gas inlet partition member 220 and the annular gas inlet groove on the lower plate 211 is not limited, as long as the communication is realized, and the circulation of the gas is ensured. For example, an intake port communicating with the intake passage is provided on the disc wall 2111 corresponding to each annular intake groove. As shown in fig. 3 for the middle ring intake 2021 and the outer ring intake 2031.

In some embodiments, the bottom wall of the intake partition member 220 is disposed on the tray wall 2111 of the lower tray body 211, and the tray wall 2111 and the bottom wall at a position where the intake passage overlaps the annular intake groove are opened with an intake port communicating therewith.

Optionally, the air inlet notch of the radial extension part of the air inlet channel is configured to be an arc-shaped concave structure capable of smoothly transiting with the annular air mixing cavity, so that the path resistance of the gas flowing from the annular air mixing cavity to the air distribution disk is reduced, and the smoothness of the gas entering is improved.

In some embodiments, the tray wall 2111 of the lower tray 211 is curved, and is inserted into a portion of the curved tray wall 2111 such that the bottom wall of the intake partition member 220 opposes the convex wall surface of the tray wall 2111 of the lower tray 211, such that the end surface of the intake chamber 221 of the intake partition member 220 is flush with the center of the convex wall surface of the curved tray wall 2111; and the annular structural part interfering with the air inlet channel is removed, and one air inlet channel is only correspondingly communicated with one annular air inlet groove.

In some embodiments, the circumferential extension is connected to the outer end of the radial extension of the same corresponding intake channel and is formed to extend along a circumferential line, wherein the circumferential extension is generally the part of the short side section of the aforementioned 7-shaped intake channel. This circumference extension corresponds the setting with the branch gas channel position, also the circumference line that circumference extension belongs to rather than the branch gas channel place ring line collineation that corresponds for circumference extension can be at least to its branch gas channel that corresponds the intercommunication carry the gas, and circumference extension can increase inlet channel and divide the circumference butt joint bore area between the gas channel, and then accelerates inlet channel's radial extension's gas outflow rate.

It should be understood that the structural form of the intake passage indicated by the letter "7" in the foregoing does not relate to the definition of the length between the radial extension and the circumferential extension, i.e. the length of the radial extension may be greater than, less than or equal to the length of its corresponding circumferential extension.

Optionally, part of the adjacent circumferential extension portions located on the same circumferential line are communicated with each other, so that the gas from one gas inlet channel can be conveyed to the circumferential extension portion of another gas inlet channel through the circumferential extension portions, the overall length of the circumferential extension portions can be effectively increased, the gas conveying efficiency to the gas distribution channels is improved, and meanwhile, the uniformity of gas circumferential gas outlet can be further improved.

As shown in connection with fig. 4-12, embodiments of the present disclosure provide a second type of gas panel, including a lower gas panel 210 and an upper gas panel 290, the lower gas panel 210 having one or more first gas entry subsections 230; the upper gas distribution plate 290 includes gas distribution channels in different circular lines from inside to outside, and some or all of the gas distribution channels in non-adjacent circular lines communicate with one or more first gas inlet partitions 230.

The second class of minute gas dish of this disclosed embodiment, through the setting of the first subregion 230 that admits air on the minute gas dish 210 down for the gas that gets into by an air inlet on the minute gas dish 210 down can be shunted to the branch gas passageway on the different circular lines on the minute gas dish 290, has enlarged the branch gas area of gas, has increased the variety of the mode of putting out a fire, has increased heating area's flexibility, can satisfy multiple culinary art demands, for example, fry in shallow oil, cook etc. and heat the scene.

In some embodiments, the air inlet portion of the air distribution plate includes at least a first air inlet passage 231 and a second air inlet passage 232 formed in the lower air distribution plate 210; accordingly, the gas distribution portion includes at least a first gas distribution channel 205, a second gas distribution channel 206, and a third gas distribution channel 207 formed in the upper gas distribution plate 290. The first air distribution channel 205 and the third air distribution channel 207 are communicated with the first air inlet channel 231, and the second air distribution channel 206 is communicated with the second air inlet channel 232, so that the combustion states of the fire hole rings corresponding to the first air distribution channel 205 and the third air distribution channel 207 can be uniformly controlled by the air supply flow path corresponding to the first air inlet channel 231, the combustion states of the fire hole rings corresponding to the second air distribution channel 206 can be controlled by the air supply flow corresponding to the second air inlet channel 232, and the two air distribution channels are independent of each other.

Therefore, when the gas flow of each air inlet channel is changed, the gas amount of the corresponding gas distribution channel and the gas amount of the corresponding fire hole ring can be synchronously changed, and meanwhile, the fire hole rings corresponding to the same air inlet channel (such as the first air inlet channel 231) are respectively positioned at different internal and external heating positions in a loop mode, so that the synchronous adjustment of firepower at a plurality of internal and external different heating positions can be simultaneously realized by adjusting the gas flow of a single air inlet channel, the heating uniformity can be effectively improved, and the complexity of operation is reduced.

Optionally, as shown in fig. 4 and 6, the number of the first air intake channels 231 and the second air intake channels 232 is multiple and the first air intake channels 231 and the second air intake channels 232 are arranged in groups in a one-to-one correspondence manner; the first inlet channel 231 of multiunit and the second inlet channel 232 are evenly arranged along circumference according to equal radian interval for the gas that divides the gas channel output on each loop can be more even distribution in circumference, improves the air feed stationarity.

Alternatively, as shown in fig. 8, the number of the first intake passages 231 is plural, and the number of the second intake passages 232 is plural; the first air inlet channels 231 and the second air inlet channels 232 are alternately arranged along the circumferential direction, in the embodiment shown in fig. 8, the number of the first air inlet channels 231 and the number of the second air inlet channels 232 are respectively 2, 4 air inlet channels are arranged on the lower air distribution plate 210 of the air distribution plate in a cross shape, the two first air inlet channels 231 are symmetrically arranged, and the two second air inlet channels 232 are also oppositely arranged.

Optionally, the first air intake channel 231 and the second air intake channel 232 are in a channel structure with gradually expanding from inside to outside and gradually increasing channel cross-sectional area.

In some embodiments, the first air inlet channel 231 supplies air to the first air distribution channel 205 and the third air distribution channel 207 simultaneously, and the number of the air distribution channels corresponding to the air supply is greater than that of the second air inlet channel 232, so that in order to guarantee the flame intensity of the fire hole rings corresponding to the first air distribution channel 205 and the third air distribution channel 207 respectively, the expansion amplitude of the first air inlet channel 231 is greater than that of the second air inlet channel 232, so as to adapt to the larger gas flow requirement of the first air inlet channel 231.

In some embodiments, the lower air distribution plate 210 includes a lower plate body 211 and a first partition rib 240. A penetrating inner annular member 212 (forming the inner ring intake port 201) is provided at the center of the first disk surface of the lower disk body 211, and a plurality of annular intake grooves surrounding the inner annular member 212 are provided on the second disk surface. The first separating rib 240 has a first arc segment 241 and a first straight segment 242, and the two ends of the first arc segment 241 are respectively provided with the first straight segment 242; the first partition rib 240 is disposed on the first plate surface of the lower plate 211. The ends of the first straight segment 242 are connected to the inner annular member 212; the area between the first partition bead 240 and part of the inner annular member 212 forms the first intake partition 230; the first intake partition 230 communicates with an annular intake slot.

In this embodiment, the first partition rib 240 is used to partition the lower gas distribution plate 210 into the first gas inlet partition 230, so that the gas distribution channels on the non-adjacent circular lines are communicated with the first gas inlet partition 230, and the gas/premixed gas introduced into one annular gas inlet groove can flow into the gas distribution channels on the non-adjacent circular lines through the corresponding gas inlet channels, thereby realizing one-to-many gas distribution and increasing the flexibility of gas distribution. The first intake partition 230 is generally fan-shaped in shape.

Optionally, the first intake partition 230 communicates with the inner annular intake slot.

In some embodiments, the lower disc 211 further comprises a plurality of annular members, which are disposed on the second disc surface of the lower disc 211 from inside to outside by taking the inner annular member 212 as a center, so as to form a plurality of annular air inlet grooves. In this embodiment, a plurality of annular air inlet grooves disposed on the second plate surface of the lower plate 211 are butted with the air outlet of the burner to receive the gas/premixed gas. The number of the annular air inlet grooves is determined according to actual requirements.

Optionally, the number of annular inlet slots is 2. As shown in fig. 5 and 9, the inner annular member 212 is centered, the middle annular member 213 and the outer annular member 214 are concentrically disposed on the second disk surface from inside to outside in this order, and the inner ring intake port 201, the middle annular intake groove 202, and the outer annular intake groove 203 are formed on the lower disk body 211.

Optionally, first intake partition 230 communicates with intermediate annular intake slot 202. The gas distribution area is enlarged.

In the disclosed embodiment, the inner annular member 212, the middle annular member 213, and the outer annular member 214 are each a circular ring member having a certain height. The height of each annular member may be different, depending on the actual configuration. Optionally, the inner annular member 212 is at the same height as the outer annular member 214 above the first disc surface of the lower disc 211 such that the connecting end surface of the lower gas-distributing disc 210 is planar. Optionally, the height of the annular member located on the outer side of the second disk face is greater than the height of the annular member located on the inner side. As shown in fig. 5 and 9, the outer annular member 214 has a height greater than the height of the middle annular member 213.

Optionally, the first separating rib 240 includes a first separating rib 240 i and/or a first separating rib 240 ii. The first separating rib 240 i is an arc line with a first arc line segment 241 being greater than or equal to a semicircular arc, and the first separating rib 240 ii is an arc line with a first arc line segment 241 being less than a semicircular arc.

Optionally, the number of the first separating ribs 240 is one or more, when the number of the first separating ribs 240 is multiple, the plurality of first separating ribs 240 are arranged around the inner annular member 212 at intervals, and the first arc segments 241 of the plurality of first separating ribs 240 are located on the same ring line.

In the embodiment of the present disclosure, the shape and the number of the first partitioning ribs 240 are not limited, and may be determined according to the division of the lower air-distributing tray 210 into one or more first air-intake partitions 230.

Optionally, the first separating rib 240 includes a first separating rib 240 i. In this embodiment, the number of the first partition ribs 240 is one, and the lower gas distribution plate 210 is divided into the first gas inlet partitions 230. Optionally, the central angle of the first arc segment 241 of the first separating rib 240 i is 120 ° to 180 °. Optionally, the central angle of the first arc segment 241 of the first separating rib 240 i is 140 ° to 160 °. Alternatively, the first arc segment 241 of the first separating rib 240 i has a central angle of 150 °.

Optionally, the first separating rib 240 includes a first separating rib 240 ii. In this embodiment, the number of the first separating ribs 240 ii is 2, 3, 4 or more, and the uniform air intake is only required. Alternatively, as shown in fig. 8, the first partition ribs 240, the number of which is 2, are symmetrically disposed around the inner ring member 212. As shown in fig. 4 and 10, the first partition ribs 240 are 4 in number and are uniformly provided around the inner ring member 212.

Optionally, the first separating rib 240 includes a first separating rib 240 i and a first separating rib 240 ii. In this embodiment, there is one first separating rib 240 i and a plurality of first separating ribs 240 ii. The central angle of the first separating rib 240 i is 90 ° to 120 °. The first separating ribs 240 ii are disposed between two first straight lines 242 of the first separating ribs 240 i.

In some embodiments, the lower gas distribution plate 210 further includes a second partition rib 250 having a second arc segment 251 and a second straight segment 252, wherein the second straight segment 252 is disposed on a first end of the second arc segment 251; the second partition rib 250 is disposed in the first air intake partition 230, and the second end of the second arc segment 251 is connected to the first straight segment 242 of the first partition rib 240, and the end of the second straight segment 252 is connected to the inner annular member 212; a first air intake passage 231 is formed between the outer side of the second partitioning rib 250 and the first partitioning rib 240; the first air intake passage 231 communicates with the annular air intake groove on the inner side.

In this embodiment, the second separating rib 250 is shaped like a "7", the second arc segment 251 is disposed along the circular line of the lower gas distribution plate 210, and the second straight segment 252 is not limited to be disposed along the radial direction of the lower gas distribution plate 210. Then, the second partition rib 250 shaped like a letter "7" is buckled on the first straight line segment 242 of the first air intake partition 230 shaped like a sector as a whole, and the formed first air intake passage 231 includes the first radial air intake portion 2311 and the first circumferential air intake portion 2312 which are communicated with each other. Also, the number of the second partition ribs 250 may be one or two.

Alternatively, as shown in fig. 4 and 10, if the number of the second separating ribs 250 provided in each first separating rib 240 is one, the second ends of the second arc-shaped line segments 251 are connected to the second side first straight line segments 2422 of the first separating ribs 240, the second straight line segments 252 are close to the first side first straight line segments 2421 of the first separating ribs 240 to form the first radial air inlet portions 2311, and the first circumferential air inlet portions 2312 are formed between the second arc-shaped line segments 251 and the first arc-shaped line segments 241 of the first separating ribs 240. In the present embodiment, the first intake passage 231 has a 7-shape.

Optionally, as shown in fig. 8, the number of the second separating ribs 250 arranged in each first separating rib 240 is two, the second ends of the second arc segments 251 of the two second separating ribs 250 are respectively connected to the first straight segments 242 on both sides of the first separating rib 240, the second arc segments 251 of the two second separating ribs 250 are located on the same circular line, and a first circumferential air inlet portion 2312 is formed between the second arc segments 251 of the two second separating ribs 250 and the first arc segments 241 of the first separating rib 240; the second straight sections 252 have spaces therebetween to form first radial air intake portions 2311. In the present embodiment, the first intake passage 231 has a "T" shape.

In some embodiments, an end of the first straight line segment 242 of the first partition rib 240 for forming the first air intake channel 231 is bent to form a first bent segment 243, and the first bent segment 243 is connected with the adjacent first straight line segment 242; a communication port is formed on the lower disc body 211 between the inner annular member 212 and the first bending section 243 and is communicated with the inner annular air inlet groove. In this embodiment, an arc-shaped channel is formed between the first bending section 243 and the inner annular member 212, the arc-shaped channel corresponds to the inner annular air inlet groove (e.g., the middle annular air inlet groove 202), and a communication port is formed on the arc-shaped channel to form the middle annular air inlet 2021. Compared with the structure in which the end of the first straight line segment 242 is not bent as shown in fig. 7, the intake area of the middle ring intake port 2021 is increased, and the intake air amount is increased.

As shown in fig. 4 and 5, the lower air distribution plate includes 4 first partition ribs 240, and one second partition rib 250 is disposed in each first partition rib 240, wherein the first side first straight line part 2421 and the second partition rib 250 form a first radial air inlet portion 2311 of the first air inlet channel 231. Therefore, the end of the first side first straight line part 2421 of one of the first separating ribs 240 is bent to form a first bent section 243, and the first bent section 243 is connected with the adjacent first straight line part 242 (e.g., the second side first straight line part 2422 of the adjacent other first separating rib 240).

Optionally, the first intake passage 231 communicates with the middle annular intake groove 202. Alternatively, the first radial intake portion 2311 of the first intake passage 231 communicates with the intermediate annular intake groove 202. The gas distribution area is increased.

In the embodiment of the present disclosure, the first partition rib 240 partitions the first disk surface of the lower disk 211 into two regions, one of which is the aforementioned first intake partition 230, and the other of which is defined as a second intake partition. The first air inlet partition 230 is communicated with part or all of the air distribution channels which are not adjacent to the circular line, and the rest air distribution channels are communicated with the second air inlet partition, so that air supply of all the air distribution channels on the upper air distribution plate 290 is realized.

In some embodiments, lower plate 210 further comprises one or more second intake subsections having second intake passages 232 configured therein; the second intake passage 232 communicates with a part of the gas distribution passage of the upper gas distribution plate 290. In this embodiment, the second air intake passage 232 is configured to guide intake air to a set partial air distribution passage, so that the flexibility of air distribution is further improved.

Optionally, when the lower gas distribution plate 210 includes the first partition rib 240, the lower gas distribution plate 210 further includes a third annular partition rib 260, which is surrounded on the outer side of the first partition rib 240; the region between the first partition bead 240 and the third annular partition bead 260 forms the second air intake passage 232; and the second intake passage 232 includes the second radial intake portion 2321 and the second circumferential intake portion 2322 that communicate. The second air inlet passage 232 is communicated with the annular air inlet groove on the outer side to be connected with fuel gas. In this embodiment, a second circumferential air intake portion 2322 is disposed between the plurality of first arc segments 241 and the third annular separating rib 260, a second radial air intake portion 2321 is formed between two adjacent first straight segments 242 (which may be two adjacent straight segments 242 of different first separating ribs 240, or two first straight segments 242 of one first separating rib 240), and according to the number of the first separating ribs 240, the second radial air intake portion 2321 may be one or more, so as to increase the number of air intake ports, improve the air intake amount, and further improve the uniformity of air intake.

Optionally, when the number of the first separating ribs 240 is multiple, a partition plate is radially disposed between the first arc segment 241 and the third annular separating rib 260 of each first separating rib 240 to divide the second circumferential air inlet 2322 into multiple sections, and each section of the circumferential air inlet is communicated with one second radial air inlet 2321. A plurality of second intake passages 232 are formed.

Optionally, the second inlet passage 232 communicates with the outer annular inlet groove 203. Optionally, the second radial inlet 2321 of the second inlet passage 232 communicates with the outer annular inlet slot 203. The gas distribution area is increased.

In the embodiment of the present disclosure, depending on whether the air supplement channel 270 is provided, a third type of air distribution plate is further provided, as shown in fig. 4 to 12, including a lower air distribution plate 210 and an upper air distribution plate 290, where the lower air distribution plate 210 has one or more first air intake partitions 230, and a partition structure for partitioning the first air intake partitions 230 into a first air intake channel 231 and an air supplement region is provided in the first air intake partition 230; the upper gas distribution plate 290 includes gas distribution channels in different circular lines from inside to outside, and some or all of the gas distribution channels in non-adjacent circular lines communicate with one or more first gas inlet partitions 230.

In the third type of air distribution plate according to the embodiment of the present disclosure, an air supplement region is provided on the lower air distribution plate 210 for supplementing air to improve the combustion rate of the fuel gas. In this embodiment, the upper air-distributing plate 290 is provided with an air supplement inlet structure at a position corresponding to the air supplement region, and air supplement is completed in cooperation with the air supplement inlet structure.

In some embodiments, the third type of lower gas distribution plate 210 includes a lower plate body 211, a first partition rib 240, and a second partition rib 250. A penetrating inner annular member 212 is disposed at the center of the first disk surface of the lower disk 211, and a plurality of annular intake grooves surrounding the inner annular member 212 are disposed on the second disk surface. The first separating rib 240 has a first arc segment 241 and a first straight segment 242, and the two ends of the first arc segment 241 are respectively provided with the first straight segment 242; the first partition rib 240 is disposed on the first plate surface of the lower plate 211. The ends of the first straight segment 242 are connected to the inner annular member 212; the area between the first partition bead 240 and part of the inner annular member 212 forms the first intake partition 230; the first intake partition 230 communicates with an annular intake slot. The second separating rib 250 is provided with a second arc line segment 251 and a second straight line segment 252, and the first end of the second arc line segment 251 is provided with the second straight line segment 252; the second partition rib 250 is disposed on the first air intake partition 230, and the second end of the second arc segment 251 is connected to the first straight segment 242 of the first partition rib 240, and the end of the second straight segment 252 is connected to the inner annular member 212; the second partition rib 250 partitions the first intake partition 230 into the independent first intake passage 231 and the air supplement region; an air supplement inlet 271 is formed on the lower plate 211 of the air supplement region.

That is, the third type air distribution plate is based on the second type air distribution plate, the area enclosed by the partial first straight line 242 of the first separating rib 240 and buckled by the second separating rib 250 is limited as the air supplement area, the lower plate body 211 of the area is provided with the air supplement inlet 271, the air supplement outlet arranged on the upper air distribution plate 290 is matched, and an air channel is formed between the air supplement inlet 271 and the air supplement outlet, so that the air entering from the air supplement inlet 271 flows out from the air supplement outlet and is mixed with the gas for combustion, the air quantity is increased, and the combustion efficiency is improved.

In the third type gas distribution plate according to the embodiment of the present disclosure, the structural content of the same component as that of the second type gas distribution plate refers to the related content of the second type gas distribution plate, and is not described herein again.

Optionally, an air make-up inlet 271 is provided outside the annular inlet slot of the lower disc 211. The air is introduced into the inner side of the air distribution plate from the outside, and the combustion efficiency is improved.

In some embodiments, the ends of the first straight segments 242 of the first separating ribs 240 used to form the air supplement regions are bent to form second bent segments 244, and the second bent segments 244 are connected with adjacent first/second straight segments 242/244; an air outlet-side passage 274 is formed between the inner annular member 212 and the second bend 244. In this embodiment, the air outlet side passage 274 communicates with the air supplement inlet 271 of the air supplement region to form an air passage, so that air can be introduced between the inner ring fire and the middle ring fire/the middle ring fire and the outer ring fire, and the air supplement amount can be increased to improve the combustion efficiency.

In the present embodiment, the manner of forming the air outlet-side passage 274 and the structure formed are different for different numbers of arrangement of the second partitioning ribs 250.

Alternatively, as shown in the lower gas distribution plate of fig. 8, two second partition ribs 250 are provided in each of the first partition ribs 240. The first straight line sections (2421, 2422) on the two sides of the first separating rib 240 are respectively buckled with one second separating rib 250 to form an air supplementing area; the ends of the first straight line sections (2421, 2422) on both sides are bent outward to form the second bent sections 244, the two second bent sections 244 are connected to form one integral second bent section 244, and the air outlet side passage 274 is formed between the integral second bent section 244 and the inner annular member 212. The air make-up is increased.

Alternatively, referring to a lower gas distribution plate shown in fig. 7, a second partition rib 250 is provided in each of the first partition ribs 240. The second side first straight line part 2422 of the first separating rib 240 is buckled with the second separating rib 250 to form an air supplementing area; the second bent section 244 may be formed by bending an end portion of the second side first straight line section 2422 outward and connected to the first side first straight line section 2421 of the adjacent other first partition rib 240, and the air outlet side passage 274 may be formed between the second bent section 244 and the inner annular member 212. The air make-up is increased.

In some embodiments, as shown in fig. 11, the lower air distributor 210 further comprises an air deflector 280 disposed at the air make-up inlet 271 for directing the air flow. In this embodiment, the structure and the arrangement of the air deflector 280 are not limited as long as the air deflector can guide the air to flow between different air distribution channels of the upper air distribution plate 290.

Optionally, the air deflector 280 includes an arc deflector 281, and the arc deflector 281 is disposed at the air supplement inlet 271 along the ring shape of the lower disk 211 in such a manner as to be inclined from the outside to the inside. And air outside the air distribution plate is guided to the inside. In this embodiment, the arc deflector 281 of the air deflector 280 is concentrically disposed with the annular members of the lower disk 211 and is located outside the plurality of annular members.

Optionally, a curved baffle 281 is provided on the inside edge or radially in the middle of the air make-up inlet 271; when the arc flow guide 281 is provided in the middle of the air replenishment inlet 271 in the radial direction, the air replenishment inlet 271 is divided into the inner air replenishment inlet 271 and the outer air replenishment inlet 271. The gas-supplying device is used for supplying air for the gas on the inner gas-distributing channel and the outer gas-distributing channel respectively, and improves the combustion effect.

Optionally, an arc deflector 281 is disposed at the middle of the air supplement inlet 271 in the radial direction, and the upper end edge of the arc deflector 281 extends upward to be flush with the upper end edge of the first partition rib 240; the lower end extends downwards to a height not exceeding the height of the outer annular member. So that the air replenishment inlet 271 is partitioned into the inner air replenishment inlet 271 and the outer air replenishment inlet 271.

Optionally, a curved baffle 281 is provided on the inside edge of the air make-up inlet 271, and the curved baffle 281 extends downwardly to a height corresponding to the height of the outside annular member. The drainage function is realized, and meanwhile, the drainage device is matched with an annular component on the outer side to play a certain supporting role.

Optionally, the arc deflector 281 is formed to extend along the outer circumference of the middle ring member.

In the above embodiment, "height" refers to a height from the second plate surface of the lower plate body 211.

Optionally, the air deflector 280 further includes a straight plate 282 radially outwardly extended and disposed on the second disk surface of the lower disk body 211 and having one end connected to both ends of the arc deflector 281, and the outer end of the straight plate extends to the outer peripheral side of the air-dividing disk. For embodiments in which the curved baffle 281 is disposed in a radially intermediate portion of the air make-up inlet 271, the provision of the straight plate 282 circumferentially separates the underside of the lower disk 211 into an inboard air inlet passage 272 corresponding to the second air make-up passage and an outboard air inlet passage 273 corresponding to the first air make-up passage. The two straight plates 282 at either end of one arc deflector 281 define an outside air inlet passage 273 therebetween and the two straight plates 282 at the adjacent ends of two adjacent arc deflectors 281 define an inside air inlet passage 272 therebetween. Promoting the stability and uniformity of the air flow.

Optionally, the outside of straight board is provided with conical reinforcement floor, and reinforcement floor can increase straight board self anti-deformation strength to its life is prolonged.

Optionally, the air deflector and the air distribution plate are of an integrally formed structure.

Like the second type air distribution plate, in the third type air distribution plate according to the embodiment of the present disclosure, the first partition rib 240 partitions the first plate surface of the lower plate 211 into two regions, one is the first air intake partition 230, and the other region is defined as the second air intake partition. The first air inlet partition 230 is communicated with part or all of the air distribution channels which are not adjacent to the circular line, and the rest air distribution channels are communicated with the second air inlet partition, so that air supply of all the air distribution channels on the upper air distribution plate 290 is realized.

Thus, in some embodiments, lower gas distributor plate 210 further includes one or more second gas inlet subsections, with second gas inlet passages 232 configured therein; the second intake passage 232 communicates with a part of the gas distribution passage of the upper gas distribution plate 290. In this embodiment, the second air intake passage 232 is configured to guide intake air to a set partial air distribution passage, so that the flexibility of air distribution is further improved. In this embodiment, the structure and implementation structure of the second air inlet channel 232 may refer to the content of the corresponding portion of the second type air distribution plate, and are not described herein again.

In the air distribution plate according to the embodiment of the present disclosure, the upper air distribution plate 290 of the three types of air distribution plates has the same structural form, that is, the upper air distribution plate 290 of each of the embodiments described below can be applied to each of the lower air distribution plates 210 to form one type of air distribution plate.

In some embodiments, as shown in fig. 1 to 11 in combination, the upper gas distribution disk 290 includes an upper disk body 291 and a plurality of annular gas distribution members, and a through hole (as the inner ring gas distribution port 204) is provided in the center of the upper disk body 291; a plurality of annular gas distributing members, each of which is configured with a gas distributing passage, are coaxially disposed from the inside to the outside on a side disk surface (e.g., a second disk surface) of the upper disk body 291. The gas distribution channels of some or all of the non-adjacent annular gas distribution members are communicated with the same gas inlet structure on the lower gas distribution plate 210.

In the embodiment of the present disclosure, the same air inlet structure on the lower air distribution plate 210 is different according to the aforementioned first to third air distribution plates.

Optionally, for the first type of gas distribution plate, the gas distribution channels of some or all of the non-adjacent annular gas distribution members on the upper gas distribution plate 290 are communicated with the same gas inlet channel on the lower gas distribution plate 210. In this embodiment, the same intake passage is either the inner intake passage 2212 or the outer intake passage 2211.

Optionally, for the second type of gas distribution plate, the gas distribution channels of some or all of the non-adjacent annular gas distribution members on the upper gas distribution plate 290 are communicated with the first gas inlet partition 230 on the lower gas distribution plate 210. And, when the lower gas distribution plate 210 includes the second intake passage 232, the gas distribution passages of the remaining annular gas distribution members communicate with the second intake passage 232.

Optionally, for the third type of gas distribution plate, the gas distribution channels of some or all of the non-adjacent annular gas distribution members on the upper gas distribution plate 290 are communicated with the first gas inlet channel 231 on the lower gas distribution plate 210.

In the upper gas distribution plate 290 according to the embodiment of the present disclosure, the other side plate surface (e.g., the first plate surface) of the upper plate body 291 is a connection end surface of the upper gas distribution plate 290 and the lower gas distribution plate 210.

In some embodiments, as shown in FIG. 9 and in diagram 11, the other disk surface of upper disk body 291 is flat. The connecting end face of the lower air distribution plate 210 is also a plane, and the two are fixedly connected after being butted.

In some embodiments, as shown in fig. 2, a fitting member 292 is further disposed on the other side plate surface of the upper plate body 291, and the fitting member 292 is in fitting and abutting joint with the air inlet partition (i.e., the air inlet partition member 220) on the lower air distribution plate 210 to form a plurality of air inlet passages. The air inlet channel sealing performance is improved, and air leakage is prevented.

Optionally, the engagement member 292 includes ribs disposed on the other side plate surface of the upper plate body 291 in a manner to fit with the air distribution structure on the lower air distribution plate 210.

In the first type of air distribution plate shown in fig. 2, the shape of the ribs provided on the other side plate surface of the upper plate body 291 coincides with the shape of the intake partition member 220 on the lower air distribution plate 210 and the partition member 222 provided therein.

Optionally, a fitting member 292 protrudes on the other side disk surface of the upper disk body 291. The horizontal position of the upper plate body 291 is properly increased, the sectional area of the air supplement passage 270 is increased, and the air supplement amount is increased.

In the embodiment of the present disclosure, the through hole formed on the upper disk body 291 is an inner ring gas distribution opening 204, which is communicated with the inner ring gas inlet 201 on the lower gas distribution disk 210 to form an inner ring gas channel.

Optionally, an upper inner ring member 293 is disposed on the circumference of the through hole of the upper disc body 291, such that the gas outlet surface of the inner ring gas channel is flush with the upper end surface of each annular gas distribution member. Of course, as shown in fig. 4 and 8, the upper inner ring member 293 may not be provided, and may be determined according to actual requirements.

In the upper gas distribution plate 290 of the embodiment of the present disclosure, the number of the annular gas distribution members is not limited, and may be determined according to actual requirements. In some embodiments, as shown in fig. 1, 8 and 10, the number of the annular gas distribution members is 4, and the upper gas distribution plate 290 is provided with a first annular gas distribution member 294, a second annular gas distribution member 295, a third annular gas distribution member 296 and a fourth annular gas distribution member 297 in sequence from inside to outside, and the first gas distribution passage 205, the second gas distribution passage 206, the third gas distribution passage 207 and the fourth gas distribution passage 208 are correspondingly configured. And part or all of the non-adjacent annular gas distribution components are communicated with the gas inlet structure.

Alternatively, for the first type of air distribution plate, the first air distribution passage 205 and the third air distribution passage 207 are both communicated with the aforementioned inner intake passage 2212, and the second air distribution passage 206 and the fourth air distribution passage 208 are both communicated with the outer intake passage 2211.

Alternatively, for the second type of gas panel, the first gas distribution passage 205 and the third gas distribution passage 207 are both in communication with the aforementioned first gas intake partition 230, and the second gas distribution passage 206 and the fourth gas distribution passage 208 are both in communication with the second gas intake passage 232.

Alternatively, for the third type of gas panel, the first gas distribution passage 205 and the third gas distribution passage 207 are both in communication with the aforementioned first gas intake partition 230, and the second gas distribution passage 206 and the fourth gas distribution passage 208 are both in communication with the second gas intake passage 232.

Optionally, the number of the first gas distribution channels 205 of the same circular line is multiple, and the first gas distribution channels are arranged at intervals along the circumferential direction of the circular line where the first gas distribution channels are located according to a first equal radian; similarly, the number of the second gas distribution channels 206 of the same circular line is multiple, and the second gas distribution channels are also arranged at intervals along the circumferential direction of the circular line where the second gas distribution channels are located according to a second equal radian; similarly, the number of the third air dividing channels 207 on the same circular line is multiple, and the third air dividing channels are arranged at intervals of a third equal radian along the circumferential direction of the circular line on which the third air dividing channels are arranged. Here, the arrangement of the plurality of first gas distribution channels on the same loop line can enable the gas to flow out from a plurality of positions of the loop line simultaneously, so as to improve the uniformity of gas outlet in the circumferential direction of the loop line.

The plurality of first branch air passages 205 and the third branch air passage 207 are arranged in one-to-one correspondence with the plurality of first intake air passages 231; and, the plurality of second branch passages 206 are provided in one-to-one correspondence with the plurality of second intake passages 232.

Optionally, the first radian, the second radian and the third radian may be the same or different.

Optionally, each annular gas distribution member comprises two annular ribs, and the annular channel between the two annular ribs is the gas distribution channel.

In the upper air distribution plate 290 according to the embodiment of the present disclosure, a plurality of annular air distribution members are disposed on a side plate surface (e.g., a second plate surface) of the upper plate body 291 from inside to outside around the through hole, and the plurality of annular air distribution members may be uniformly distributed on the second plate surface in a radial direction or may be non-uniformly disposed on the second plate surface in a predetermined layout.

In some embodiments, the plurality of annular gas distribution members form one or more sets of gas passages in different annular zones of the upper disc body 291 in a manner that two or more annular gas distribution members are adjoined in sequence from inside to outside in a radial direction of the upper gas distribution disc 290 to form one set of gas passages. The same air inlet channel (inner air inlet channel or outer air inlet channel, first type air distribution plate)/first air inlet partition 230 (second type air distribution plate)/first air inlet channel 231 (third type air distribution plate) on the lower air distribution plate 210 is respectively communicated with the inner air distribution channel or the outer air distribution channel in each group of air channels. In this embodiment, divide the integration of gas channel, simplified the quantity of fire lid, set up a fire lid on a set of gas channel, according to the branch gas channel quantity on this group of gas channel, it can to set up the fire hole ring of the equal quantity on corresponding fire lid.

In this embodiment, the ring area of the upper plate 291 may be set according to the heating area. The ring zone is divided into an inner ring zone, a middle ring zone and an outer ring zone. The first and second gas distribution passages 205 and 206 are adjoined to form a set of middle ring gas passages in the middle ring area, and the third and fourth gas distribution passages 207 and 208 are adjoined to form a set of outer ring gas passages in the outer ring area. That is, when only the middle annular intake groove 202 of the lower air distribution plate 210 is supplied with air, the gas can be delivered to the first air distribution passage 205 and the third air distribution passage 207 via the inner side intake passage 2212/the first air intake partition 230/the first intake passage 231 of the intake partition member 220, expanding the air distribution area. Wherein, the inner ring gas channel is a gas channel of the inner ring area.

In the embodiment of the present disclosure, an air supplement outlet is further disposed on the upper disk body 291 of the upper air distribution disk 290, especially for the first air distribution disk and the third air distribution disk. So as to introduce air into the interior during combustion and improve combustion efficiency. The position and shape of the air supply outlet are not limited, and the air supply outlet may be designed in combination with the air supply inlet 271/air passage on the lower air distribution plate 210.

In some embodiments, the air supplement outlets include an inner air supplement outlet 275, the inner air supplement outlet 275 disposed between the through hole of the upper disk 291 and the inner first annular air distribution member (first annular air distribution member 294), and communicating with the air supplement inlet 271/air supplement channel 270 configured on the lower air distribution disk 210.

In some embodiments, the air supplement outlets further include an outer air supplement outlet 276 disposed on the upper disc body 291 between adjacent annular air distribution members and corresponding to the air supplement inlet 271 disposed on the lower air distribution disc 210.

In this embodiment, after the upper air-distributing plate 290 is butted against the lower air-distributing plate 210, the inner air supplement outlet 275 and the outer air supplement outlet 276 can be communicated with the same air supplement channel 270 (as shown in fig. 1, 4 and 8); or may communicate with a different air make-up passage 270.

As shown in fig. 10, for the third class of air-separation discs, the inboard air supplement outlet 275 communicates with the inboard air inlet passage 272 and the outboard air supplement outlet 276 communicates with the outboard air inlet passage 273.

Alternatively, the air supplement outlets are disposed on different circumferential lines of the upper plate 291, and a plurality of air supplement outlets on the same circumferential line are uniformly distributed.

Alternatively, the inside air supplement outlet 275 is provided on a loop line between the through hole of the upper disc 291 and the inside first annular air distribution member.

Optionally, an outside air replenishment outlet 276 is provided on the lower disc 211 between the second air distribution passage 206 and the third air distribution passage 207.

In the embodiment of the present disclosure, the shape of the air replenishment outlet is not limited, and the air replenishment outlet is provided based on the maximum communication between the installation position of the air replenishment outlet and the air passage, thereby increasing the air replenishment amount.

Optionally, the inside air supplement outlet 275 is provided in a triangular shape.

Alternatively, the outside air supplement outlets 276 are arranged in an arc along a circular line.

Of course, in the upper air distribution disc 290 of the embodiment of the present disclosure, an air outlet structure for communicating with the air inlet channel is provided on the upper disc body 291 in the air distribution channel of each annular air distribution member, and the air outlet is communicated with the inner air inlet channel 2212/the first air inlet partition 230/the first air inlet channel 231 or the second air inlet channel 232/the outer air inlet channel 2211 of the air distribution channel where the air outlet is located. The number and the shape of the arrangement are not limited and can be determined according to actual needs. According to the gas distribution channels, the gas outlets are respectively defined as a first gas outlet 2901, a second gas outlet 2902, a third gas outlet 2903 and a fourth gas outlet 2904, the first gas outlet 2901 is arranged in the first gas distribution channel 205, the second gas outlet 2902 is arranged in the second gas distribution channel 206, the third gas outlet 2903 is arranged in the third gas distribution channel 207, and the fourth gas outlet 2904 is arranged in the fourth gas distribution channel 208.

Optionally, the air outlets are arranged on the lower tray body 211 in the air distribution channel along the shape, and the air outlets in the same air distribution channel are uniformly arranged along the circumferential direction. The uniformity of giving vent to anger is improved. In this embodiment, on the premise of ensuring the structural strength of the upper air distribution plate 290 and satisfying the air output, the circumferential length of the air outlet is as large as possible, and the air output is increased.

Alternatively, the length of the air outlet in the circumferential direction on the air distribution passage on the outer side is greater than the length of the air outlet in the circumferential direction on the air distribution passage on the inner side in the radial direction. The gas distribution amount on the outer side gas distribution channel is improved, and the heating efficiency of the outer side gas distribution channel is improved.

Optionally, a slope structure 298 is disposed at the same side edge in the circumferential direction of the plurality of air outlets on the same air distribution channel. The gas can be promoted to flow in the same direction after entering the gas distribution channel, and the gas outlet stability is improved.

In some embodiments, the upper gas-distributing disk 290 includes a disk-shaped body (like the upper disk 291) configured with a through-going hole and a plurality of gas outlets; the plurality of gas distribution ports are distributed on different circular lines of the disc-shaped body to form gas distribution channels. Such as the upper gas distribution plate 290 shown in fig. 4 and 5. Simple structure and simple forming.

In some embodiments, for the second type gas distribution plate and the third type gas distribution plate, the second circumferential inlet 2322 of the second inlet channel 232 of the lower gas distribution plate 210 and the outermost annular gas distribution member (the fourth annular gas distribution member 297) of the upper gas distribution plate 290 are correspondingly arranged to make the outer circumferential surfaces of the gas distribution plates flush, so as to facilitate sealing connection, and facilitate fitting with other structural members of the combustor, and the like.

Alternatively, the first circumferential air intake portion 2312 of the first air intake passage 231 of the lower air distribution plate 210 is provided corresponding to the annular air distribution member (third annular air distribution member 296) on the secondary outer side of the upper air distribution plate 290.

In this embodiment, the remaining annular gas distribution members may be disposed so long as they have an overlapping area with the inner inlet passage 2212, the first inlet partition 230, the first inlet passage 231, or the outer inlet passage 2211, the second inlet passage 232, which are correspondingly communicated with each other, and an outlet structure is opened in the upper plate 291 of the overlapping area to communicate with each other.

In the embodiment of the present disclosure, the corresponding positions of the lower gas distribution plate 210 and the upper gas distribution plate 290 are further provided with a yielding structure for arranging structural members such as the injection pipe 320, the ignition needle, the thermocouple, and the like. The yielding structure can be a yielding hole or a yielding notch. The specific arrangement position of the abdicating structure is determined according to the positions of structural components such as the injection pipe 320, the ignition needle and the thermocouple arranged on the furnace end. A plurality of fixing holes are also formed for fixedly connecting the bolts of the upper air distribution plate 290 and the lower air distribution plate 210, and the fixing holes comprise circular holes.

In the embodiment of the present disclosure, the air inlet partition on the lower air distribution plate 210 is different in structure in each type of air distribution plate, and the adopted upper air distribution plate 290 is universal, that is, the structure of the upper air distribution plate 290 shown in fig. 4 is also suitable for the lower air distribution plates 210 of other types to form a plurality of air distribution plates.

With reference to fig. 1 to 12, an embodiment of the present disclosure provides a burner including the aforementioned gas distribution plate.

Optionally, the burner further comprises a fire cover, a burner head and the like.

Fig. 14 is a schematic structural diagram of a combustor provided in the embodiment of the present disclosure. As shown in fig. 14, the burner is generally composed of a fire cover 100 and a gas supply structure provided below the fire cover 100 for supplying gas to the burner. Wherein the gas supply structure is used to deliver external gas to a corresponding fire cover in the fire cover 100.

Generally, the gas supply structure includes one or more of the gas distribution plate 200, the burner 300, and the gas inlet assembly 400. Wherein the air intake assembly 400 is used to introduce external gas into the burner; the burner 300 is used for mixing and pressurizing external gas and air; the gas distribution plate 200 serves to distribute the gas introduced into the burner into the combustion gas path corresponding to the fire cover.

The existing burner is mostly two rings of fire or three rings of fire, set up two rings of fire holes or three rings of fire holes from inside to outside promptly on the fire lid, as a ring fire when every ring of fire hole burns, wherein every ring fire corresponds an independent air feed flow path that constitutes by an intake pipe, furnace end annular gas mixing chamber 310 and gas distributing disc 200 inner channel respectively, and this kind of structural design goes out the fire form singlely, often it can not satisfy the heating demand under the different culinary art scenes.

As shown in fig. 14, the fire lid 100 includes a first annular sub fire lid 101 and a second annular sub fire lid 102, and the second annular sub fire lid 102 is fitted around the outer circumference of the first annular sub fire lid 101. Optionally, two separate annular combustion chambers are formed in the first annular sub-fire cover 101, and similarly, two separate annular combustion chambers are formed in the second annular sub-fire cover 102; here, the annular combustion chamber corresponds to the corresponding gas distribution channel position, and the gas distribution plate 200 enters the corresponding annular combustion chamber after rectifying the gas, and the annular combustion chambers in the same annular sub-fire cover do not influence each other, and the annular combustion chambers communicated in different annular sub-fire covers can burn simultaneously, so that various fire outlet forms of the fire cover 100 on the combustor can be realized.

Optionally, the fire cover 100 further comprises a central fire cover 103, which is disposed inside the first annular sub-fire cover 101 and is disposed concentrically with the first annular sub-fire cover 101 and the second annular sub-fire cover 102; the gas distributor plate also cooperates with the central fire cover 103 to define a central combustion chamber. The central fire cover 103 is communicated with the central air inlet channel 233 of the air distribution plate, the central air distribution channel 209, the central annular air mixing cavity 303 of the annular air mixing cavity assembly and the central air inlet pipe 403 of the air inlet assembly.

Further, in order to realize the characteristics of stable air supply, uniform heating and diversified fire discharging forms of the burner in the present embodiment, an air supply structure for the burner is also provided, and fig. 14 shows a schematic structural view of the air supply structure, which includes an air intake assembly 400, a burner 300 and an air distribution plate 200. The burner is disposed between the air intake assembly 400 and the air distribution plate, and is used for homogenizing and pressurizing external fuel gas introduced by the air intake pipe 410 and inputting the external fuel gas into an air intake passage of the air distribution plate. The gas distribution plate 200 is disposed on the burner 300 to achieve distribution of gas introduced into the burner into a combustion gas path corresponding to the fire cover.

Optionally, the burner 300 comprises a plurality of annular gas mixing chambers 310 arranged concentrically; the air inlet end of each annular air mixing cavity 310 is communicated with an air inlet pipe 410; the air inlet end of the air inlet channel 2001 is communicated with the corresponding air mixing cavity 310; wherein, the air inlet ends of the adjacent air inlet channels 2001 are arranged on different circular lines at the bottom of the air distributing disc 200 and are arranged in a staggered way corresponding to the corresponding annular air mixing chambers 310.

Here, the external gas enters the corresponding gas mixing cavity 310 in the burner 300 through different gas inlet pipes 410, and after being uniformly mixed in the annular gas mixing cavity, the gas is rectified through the gas inlet channel 2001 of the gas distributing disc 200 and enters the communicated gas distributing channels 2002 to supply gas for the independent gas paths corresponding to the gas distributing channels 2002 on the burner.

The air feed structure for combustor that this embodiment provided, furnace end 300 cooperatees with gas distribution plate 200, through the inlet end dislocation set with inlet channel 2001, make the gas in the annular gas mixing chamber 310 can get into corresponding inlet channel 2001 and shunt to the gas distribution channel 2002 on the different ring lines in, the gas in the same annular gas mixing chamber 310 can be to the defeated gas of the gas distribution channel 2002 on the nonadjacent ring line, the gas distribution area of gas has been enlarged, the reposition of redundant personnel area of gas has been enlarged, the variety of the mode of putting out a fire has been increased, the flexibility of heating area has been increased, can satisfy multiple culinary art demand, effectively improve the heating homogeneity, the loaded down with trivial details nature of reduction operation.

Alternatively, the number of the annular air-mixing chambers 310 corresponds to the number of the intake passages 2001, the intake passages 2001 communicating with the same branch passage 2002, the intake ends of which communicate with the same annular air-mixing chambers 310.

Alternatively, as shown in fig. 15, the annular air mixing chamber 310 includes a central annular air mixing chamber 303, a first annular air mixing chamber 301, and a second annular air mixing chamber 302, which are sequentially sleeved from inside to outside, corresponding to the air inlet passage 2001 in the above embodiment, or the number of the annular air mixing chambers is set according to the number of the air inlet passages. In the present embodiment, the first annular air mixing chamber 301 communicates with the first air intake passage 231, the second annular air mixing chamber 302 communicates with the second air intake passage 232, and the central annular air mixing chamber 303 communicates with the central air intake passage 233. Thereby, the corresponding communication of the burner 300 and the gas distribution plate 200 is achieved.

On the other hand, the number of the annular air-mixing chambers 310 corresponds to the number of the air inlet pipes 410, and the air inlet pipes 410 for supplying air to the same air-separating passages 2002 have air inlet ends communicating with the same annular air-mixing chambers 310.

Alternatively, corresponding to the air intake duct 410 in the above embodiment, the first annular air mixing chamber 301 of the annular air mixing chamber communicates with the first air intake duct 401, the second annular air mixing chamber 302 communicates with the second air intake duct 402, and the central annular air mixing chamber 303 communicates with the central air intake duct 403. Thereby, the corresponding communication of the burner 300 and the gas distribution plate 200 is achieved.

In the embodiment of the present disclosure, according to the structure of the gas distribution plate, the burner includes the aforementioned first type gas distribution plate, second type gas distribution plate, or third type gas distribution plate, and accordingly, the first type burner, the second type burner, or the third type burner is obtained.

The combustor of the embodiment of the disclosure can provide flexible and changeable heating area, and the heating area is large, and is suitable for various cooking requirements.

The embodiment of the disclosure provides a gas stove, which comprises the combustor.

In some embodiments, the gas burner comprises one or more of the aforementioned burners. When the gas range comprises a plurality of burners as described above, the burners used may be different.

Optionally, the gas stove comprises one or any two or three of the first type burner, the second type burner and the third type burner.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (11)

1. A gas distribution plate, comprising:

the gas burner comprises a plurality of concentrically arranged annular members, wherein a gas channel is constructed in part or all of the annular members, air flow channels which axially penetrate through the adjacent annular members and are arranged at intervals along the circumferential direction are arranged between the adjacent annular members, and the annular members at least comprise outer annular members at the outer side, inner annular members at the inner side and middle annular members between the outer annular members and the inner annular members;

a first air supplement channel which is formed by extending from the bottom of the air distribution disc from outside to inside, wherein an air inlet end of the first air supplement channel is arranged on the outer peripheral side of the air distribution disc, and an air outlet end of the first air supplement channel at least extends to a position between the outer annular member and the middle annular member;

and the second air supplement channel is formed by extending from the bottom of the air distribution disc from outside to inside, the air inlet end of the second air supplement channel is arranged on the outer peripheral side of the air distribution disc, and the air outlet end of the second air supplement channel at least extends to the position between the inner annular member and the middle annular member.

2. The gas distributor plate according to claim 1, further comprising a plurality of radially extending inlet passages, each of the inlet passages communicating with a gas passage in one or more annular members;

the plurality of air inlet channels are uniformly distributed at intervals along the circumferential direction, and the air outlet end of the first air supplement channel is surrounded by the adjacent air inlet channels, the outer annular member and the middle annular member; the adjacent air inlet channels, the inner annular member and the middle annular member jointly enclose an air outlet end of the second air supplement channel.

3. The air distributor tray of claim 2, comprising an air deflector, the air deflector comprising:

each group of straight plates comprises two straight plates which are respectively formed by extending along the radial side edge of the air inlet channel, the outer ends of the straight plates extend to the outer peripheral side of the air distribution disc, and the inner sides of the straight plates extend to the outer ring line of the middle annular component;

a plurality of arc guide plates, wherein each arc guide plate is formed between two adjacent groups of straight plates in an extending mode along the outer circular line of the middle annular member;

the inner sides and the outer sides of the two adjacent groups of straight plates and the corresponding arc guide plates are respectively used as the second air supplement channel and the first air supplement channel.

4. The gas tray according to claim 3, wherein the outer side of the straight plate is provided with a conical reinforcement rib.

5. The air distributor according to claim 3, wherein the arc baffles are inclined from bottom to top towards the inner side.

6. The air distributor tray of claim 3, wherein the air deflector is of unitary construction with the air distributor tray.

7. The air distributor according to claim 2, wherein the first air supply channel is concavely formed with respect to the bottom surface of the air distributor and is located between two adjacent air inlet channels;

the second air supplement channel is concavely formed relative to the bottom surface of the air distribution plate and is positioned between two adjacent air inlet channels.

8. The air distributor according to claim 7, wherein the first air supply passage is of a structure gradually converging from outside to inside;

the second air supplement channel is of a structure gradually converging from outside to inside.

9. The air distribution tray according to any one of claims 1 to 8, wherein a plurality of the first air supplement channels are uniformly arranged along the circumferential direction of the air distribution tray; and/or the presence of a gas in the gas,

the second air supplement channels are uniformly distributed along the circumferential direction of the air distribution plate.

10. A burner comprising a gas distribution plate according to any one of claims 1 to 9.

11. A gas burner comprising a burner as claimed in claim 10.

Images