CN219571916U - Burner and gas stove - Google Patents

Abstract

The utility model discloses a burner and a gas stove, and belongs to the technical field of kitchen appliances. This combustor divides gas dish, outer fire lid and interior fire lid, divide and form outer loop branch gas passage between gas dish and the outer fire lid, be provided with on the outer fire lid with the outer loop fire hole and the fire structure that passes of the one end intercommunication of outer loop branch gas passage, outer loop fire hole forms the gas export on the outer wall of outer fire lid, be provided with the zhong huo wei on the interior fire lid, the fire structure that passes is used for making the flame of zhong huo wei that zhong huo wei department produced can ignite the gas of outer loop fire hole department in order to form outer ring fire, the fire structure that passes includes the fire hole, the fire hole runs through outer fire lid and forms the fire import that passes on the outer wall of outer fire lid. According to the burner, the central position of the fire transmission inlet is set to be lower than that of the gas outlet, so that the flame height at the fire transmission hole is lower than that at the fire hole of the outer ring, the wok stand foot piece is formed to avoid the position, the wok stand foot piece is reduced to avoid the contact of the flame at the position, and the generation amount of carbon monoxide is reduced.

Description

Burner and gas stove

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a combustor and a gas stove.

Background

The gas stove is a kitchen utensil which is heated by direct fire by using liquefied petroleum gas, artificial gas, natural gas and other gas fuels, and a burner and a furnace head are both important components of the gas stove. Conventional burners generally include an outer fire cover for forming an outer ring fire, and fuel gas is ignited after flowing out of an outer ring fire hole of the outer fire cover to form the outer ring fire. And, the gas-cooker still includes the pot frame that is used for supporting the cooking utensil, and the pot frame encircles the burner setting and is located the outside of outer fire lid, because pot frame and outer fire lid set up adjacently, the flame of consequently the outer ring fire is blockked by the foot piece of pot frame and leads to the unable abundant burning of gas to lead to the production in a large number of carbon monoxide, causes the influence to user's safety.

Disclosure of Invention

A first object of the present utility model is to provide a burner which reduces contact of flames of an outer ring fire with a pot holder, reduces the amount of carbon monoxide generated, and improves the safety of use of the burner.

To achieve the purpose, the utility model adopts the following technical scheme:

a burner, comprising: an air distribution plate; the outer fire cover is arranged above the gas distribution disc, an outer ring gas distribution channel is formed between the gas distribution disc and the outer fire cover, the outer ring gas distribution channel can be communicated with a main gas channel of the burner, an outer ring fire hole and a fire transmission structure which are communicated with one end of the outer ring gas distribution channel are arranged on the outer fire cover, and a gas outlet is formed on the outer wall surface of the outer fire cover by the outer ring fire hole; the inner fire cover is arranged above the outer fire cover, an intermediate fire hole is formed in the inner fire cover, and the intermediate fire hole is communicated with the other end of the outer ring gas distribution channel; the fire transfer structure is used for enabling the flame of the middle ring fire generated at the middle ring fire hole to ignite the fuel gas at the outer ring fire hole to form outer ring fire, the fire transfer structure comprises a fire transfer hole, the fire transfer hole penetrates through the outer fire cover and forms a fire transfer inlet on the outer wall surface of the outer fire cover, and the center position of the fire transfer inlet is lower than the center position of the fuel gas outlet so as to form a pot frame foot piece avoiding position.

Preferably, the fire transfer hole is a straight hole, and the central axis of the fire transfer hole is inclined relative to the vertical direction.

Preferably, the aperture of the fire passing hole is smaller than that of the outer ring fire hole.

Preferably, the fire transmission structure further comprises a fire transmission groove, wherein the fire transmission groove is positioned at the top of the outer fire cover and penetrates through the outer ring part of the outer fire cover along the radial direction of the outer fire cover, and the fire transmission hole is communicated with the fire transmission groove and the outer ring gas distribution channel.

Preferably, the number of the fire transfer holes is a plurality, the number of the fire transfer grooves is one, and the fire transfer grooves are communicated with one of the plurality of the fire transfer holes.

Preferably, the outer fire cover is further provided with an outer ring flame stabilizing groove, the outer ring flame stabilizing groove is a ring groove formed in the annular side wall surface of the outer fire cover, and the ring groove is arranged below the fuel gas outlet.

Preferably, the outer flame cover is further provided with an outer ring flame stabilizing hole, the outer ring flame stabilizing hole penetrates through the outer ring portion of the outer flame cover, one end of the outer ring flame stabilizing hole forms a first flame stabilizing opening in the outer ring flame stabilizing groove, and the other end of the outer ring flame stabilizing hole forms a second flame stabilizing opening on the inner wall surface of the outer ring portion.

Preferably, the number of the outer ring flame stabilizing holes is a plurality of, and the plurality of the outer ring flame stabilizing holes are radially arranged on the outer fire cover.

Preferably, the plurality of first flame stabilizing openings are arranged in the outer ring flame stabilizing groove to form a circle; and/or the second flame stabilizing openings are distributed on the inner wall surface of the outer ring part to form a circle.

A second object of the present utility model is to provide a gas cooker which is highly safe in use.

To achieve the purpose, the utility model adopts the following technical scheme:

the gas stove comprises a stove head and the burner.

The utility model has the beneficial effects that:

the burner provided by the utility model comprises a gas distribution plate, an outer fire cover and an inner fire cover, wherein an outer ring gas distribution channel is formed between the gas distribution plate and the outer fire cover, the outer ring gas distribution channel can be communicated with a main gas channel of a burner, an outer ring fire hole communicated with one end of the outer ring gas distribution channel and a fire transmission structure are arranged on the outer fire cover, a gas outlet is formed on the outer wall surface of the outer fire cover by the outer ring fire hole, an intermediate ring fire hole is arranged on the inner fire cover, the intermediate ring fire hole is communicated with the other end of the outer ring gas distribution channel, the fire transmission structure is used for enabling flame of intermediate ring fire generated at the intermediate ring fire hole to ignite gas at the outer ring fire hole to form outer ring fire, and the fire transmission structure comprises a fire transmission hole, and the fire transmission hole penetrates through the outer fire cover and forms a fire transmission inlet on the outer wall surface of the outer fire cover. According to the burner, the central position of the fire transmission inlet is set to be lower than that of the gas outlet, so that the flame height at the fire transmission hole is lower than that at the fire hole of the outer ring, the wok stand foot piece is formed to avoid the position, the wok stand foot piece is reduced to avoid the contact of the flame at the position, and the generation amount of carbon monoxide is reduced.

Drawings

FIG. 1 is an exploded view of a burner provided by an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a burner and a jamb provided in an embodiment of the present utility model;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of the structure of a gas distribution plate of a burner according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of the outer fire cover of the burner provided by the embodiment of the utility model under a certain view angle;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a schematic view of the outer fire cover of the burner according to the embodiment of the present utility model in another view;

FIG. 8 is a schematic view of the inner fire cover of the burner provided by the embodiment of the utility model under a certain view angle;

fig. 9 is a schematic structural view of an inner fire cover of a burner according to an embodiment of the present utility model at another view angle.

In the figure:

10. a burner;

100. an air distribution plate; 110. a first gas distribution groove; 111. a first groove portion; 112. a second groove portion; 120. a first air passage; 130. a jack; 140. an annular plug-in part; 150. assembling the bulge; 151. a first fitting hole; 160. a first positioning groove; 170. a second positioning groove;

200. an outer fire cover; 201. an outer ring portion; 202. a connection part; 203. an inner ring portion; 204. middle ring fire air distribution holes; 205. a gas mixing ring groove; 206. positioning columns; 207. a fire-protection gas cavity; 208. an inner ring gas guide plate; 209. an annular sidewall plate; 210. an outer ring fire hole; 220. penetrating holes; 230. a second air passage; 240. a second gas separation tank; 241. an inner ring groove; 242. a communication groove; 243. an outer ring groove; 250. a fire transmission structure; 251. a fire hole; 252. a fire transfer groove; 260. an outer ring flame stabilizing groove; 270. outer ring flame stabilizing hole; 280. a second fitting hole;

300. an inner fire cover; 301. a cover body; 302. capping; 303. an air center channel tube; 304. an inner ring fire part; 305. a middle ring fire part; 306. a secondary gas chamber; 307. an inner ring fire hole; 308. a middle ring hole; 309. a middle ring flame stabilizing groove; 310. middle ring flame stabilizing holes; 311. a fourth annular stepped surface;

400. an outer ring gas distribution channel;

500. a secondary air passage;

20. a burner; 21. a main gas passage; 22. a secondary gas passage; 23. an air tube; 24. an inner tube of the furnace; 25. an outer tube of the furnace.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The burner 10 of the present utility model will be described in detail below with reference to fig. 1 to 9.

Fig. 1 shows a specific structure of a burner 10 according to an embodiment of the present utility model, as shown in fig. 1, the burner 10 includes a gas distribution plate 100, an outer fire cover 200 and an inner fire cover 300 sequentially disposed from bottom to top, the gas distribution plate 100 is located at the bottommost layer of the whole burner 10, the outer fire cover 200 is disposed above the gas distribution plate 100, and the inner fire cover 300 is disposed above the gas distribution plate 100. The burner 10 of the present utility model is capable of forming an outer ring fire, a middle ring fire and an inner ring fire which are sequentially arranged from outside to inside, wherein the outer ring fire is formed at the outer fire cover 200 and the middle ring fire and the inner ring fire are formed at the inner fire cover 300.

It should be noted that, the burner 10 needs to be used with the burner 20 of the gas stove, fig. 2 is a cross-sectional view of the burner 10 and the burner 20 after being assembled, as shown in fig. 2, a main gas channel 21 and a secondary gas channel 22 are formed in the burner 20, the main gas channel 21 and the secondary gas channel 22 are separated and are used for introducing the gas for the burner 10 to burn, and the amount of the gas flowing in the main gas channel 21 is greater than the amount of the gas flowing in the secondary gas channel 22.

In some embodiments, a furnace inner tube 24 and a furnace outer tube 25 are sleeved in the furnace end 20, the furnace outer tube 25 is sleeved outside the furnace inner tube 24, the inner wall surface of the furnace inner tube 24 is surrounded to form a secondary gas channel 22, and the inner wall surface of the furnace outer tube 25 and the outer wall surface of the furnace inner tube 24 are surrounded to form a primary gas channel 21. In some embodiments, an air pipe 23 is further formed in the burner 20, the air pipe 23 is used for air flowing in the burner 20, the air pipe 23 is sleeved in the inner tube 24, and at this time, an outer wall surface of the air pipe 23 and an inner wall surface of the inner tube 24 enclose to form the secondary fuel gas channel 22. That is, the secondary gas passage 22 and the primary gas passage 21 are both annular passages. In some more specific embodiments, the heights of the top surfaces of the air tube 23, the inner furnace tube 24, and the outer furnace tube 25 are gradually reduced to facilitate use with different portions of the burner 10.

Fig. 4 is a schematic structural diagram of a gas distribution plate 100 of a burner 10 according to an embodiment of the present utility model, as shown in fig. 4, the gas distribution plate 100 has a disc shape, and a first gas distribution groove 110 for forming an outer ring gas distribution channel 400 is provided on the gas distribution plate 100, and the outer ring gas distribution channel 400 is communicated with a main gas channel 21 of a burner 20. Specifically, the partial structure of the gas distribution plate 100 is recessed to form the first gas distribution groove 110, and the first gas distribution groove 110 may be integrally formed during manufacturing of the gas distribution plate 100, or may be formed through post-processing after manufacturing of the gas distribution plate 100. In some embodiments, the number of the first gas distribution grooves 110 is plural, and the plural first gas distribution grooves 110 are disposed at intervals in the circumferential direction of the gas distribution plate 100. In some more specific embodiments, as shown in fig. 4, four first gas distribution grooves 110 are provided on the gas distribution plate 100, and of course, in other embodiments, the number of the first gas distribution grooves 110 may be flexibly adjusted according to requirements.

In some embodiments, the shape of the first gas distribution groove 110 is an irregular shape, and with continued reference to fig. 4, the first gas distribution groove 110 specifically includes a first groove portion 111 and a second groove portion 112 that are mutually communicated, the widths of the first groove portions 111 are substantially the same, the first groove portions 111 are disposed along the radial extension of the gas distribution disc 100, the second groove portion 112 is located outside the first groove portion 111, the second groove portion 112 is substantially fan-shaped, and the fuel gas enters the second groove portion 112 after passing through the first groove portion 111. Of course, in other embodiments, the shape of the first air distribution groove 110 may be configured in other regular or irregular shapes as desired.

With continued reference to fig. 4, the gas separation plate 100 is provided with a first air passage 120, the first air passage 120 penetrates the gas separation plate 100 in the thickness direction of the gas separation plate 100, and the first air passage 120 is a passage through which air enters the burner 10. In some embodiments, the number of the first air channels 120 is plural, and each first air channel 120 is disposed between two adjacent first air distribution grooves 110, for example, as shown in fig. 4, the air distribution plate 100 may be provided with four first air channels 120, and the four first air channels 120 and the four first air distribution grooves 110 are alternately disposed in the circumferential direction of the air distribution plate 100, where, of course, in other embodiments, the number of the first air channels 120 is flexibly adjusted according to the requirement.

In some embodiments, the first air passage 120 is a kidney-shaped through hole extending along the circumferential direction of the air distribution plate 100, however, in other embodiments, the shape of the first air passage 120 may be a regular-shaped hole such as a center hole, a square hole, or an irregular-shaped hole, as required, as long as the passage allowing air to flow into the burner 10 can be ensured.

With continued reference to fig. 4, the central portion of the gas distribution plate 100 is formed with a jack 130 allowing the burner 20 to be inserted, and a plurality of first air passages 120 and a plurality of first gas distribution grooves 110 are each disposed around the jack 130. In some embodiments, the receptacle 130 is a circular hole. The air pipe 23 of the burner 20 and the inner pipe 24 are both provided through the insertion hole 130, and the outer wall surface of the top of the inner pipe 24 is in sealing abutment with the inner wall surface of the insertion hole 130, thereby isolating the main gas passage 21 and the sub gas passage 22 in the burner 10.

As shown in fig. 3, the structure of the gas distribution plate 100 between the insertion hole 130 and the first air channel 120 is downward protruded to form an annular insertion part 140, and the annular insertion part 140 cooperates with the outer furnace pipe 25 to realize the assembly of the gas distribution plate 100 and the furnace end 20. In some embodiments, the bottom of the annular insertion portion 140 forms a first annular stepped surface, the top of the outer tube 25 forms a second annular stepped surface adapted to the first annular stepped surface, and the annular insertion portion 140 is inserted into engagement with the outer tube 25, so that the accuracy and efficiency of engagement of the burner 20 with the burner 10 can be improved.

Fig. 5 is a schematic structural view of an outer fire cover 200 of a burner 10 according to an embodiment of the present utility model at a certain viewing angle, and fig. 7 is a schematic structural view of the outer fire cover 200 of the burner 10 according to an embodiment of the present utility model at another viewing angle, as shown in fig. 5 and 7, the outer fire cover 200 is in a round cover shape as a whole, a through hole 220 is provided at the center of the outer fire cover 200, and the through hole 220 of the outer fire cover 200 is disposed opposite to the insertion hole 130 of the gas distribution plate 100. In some embodiments, the through hole 220 is a circular hole, and the aperture of the through hole 220 is smaller than the aperture of the jack 130, the inner tube 24 of the burner 20 is inserted into the through hole 220, and the air tube 23 of the burner 20 is inserted into the through hole 220 and protrudes out of the through hole 220. In some more specific embodiments, the through hole 220 is a stepped hole, and the inner wall surface of the through hole 220 forms a third annular stepped surface, and the top of the inner tube 24 of the burner 20 is stopped at the third annular stepped surface, so that the effect of rapid positioning and assembly can be achieved.

With continued reference to fig. 5 and 7, the outer fire cover 200 is provided with a second air passage 230, and the second air passage 230 penetrates the outer fire cover 200 in the thickness direction of the outer fire cover 200. The second air passage 230 communicates with the first air passage 120, and air entering the first air passage 120 can flow into the second air passage 230 and reach the upper portion of the burner 10 through the second air passage 230.

In some embodiments, the shape of the second air passage 230 is the same as that of the first air passage 120, i.e., the second air passage 230 may be configured as a kidney-shaped through hole extending in the circumferential direction of the outer fire cover 200, or may be configured as a regular-shaped hole such as a center hole, a square hole, or an irregular-shaped hole. Of course, in other embodiments, the shape of the second air passage 230 may be different from the shape of the first air passage 120, so long as the intercommunication does not affect the air flow into the burner 10.

In some embodiments, the number of second air channels 230 is equal to the number of first air channels 120, with each second air channel 230 being disposed directly opposite one of the first air channels 120. Of course, in other embodiments, the number of second air passages 230 may be different from the number of first air passages 120.

It should be noted that the first air passage 120 and the second air passage 230, which are in communication with each other, form a secondary air passage 500 of the burner 10, and sufficient air can be provided for the burner 10 to burn fuel gas through the secondary air passage 500, so that the combustion effect and the thermal efficiency are not affected by insufficient oxygen.

With continued reference to fig. 5 and 7, the outer fire cover 200 includes an outer ring portion 201, a connecting portion 202, and an inner ring portion 203, which are disposed in this order from the outside to the inside. Wherein, the inner ring part 203 is formed by a structure of the outer fire cover 200 between the penetrating hole 220 and the second air passage 230, the connecting part 202 is used for connecting the outer ring part 201 and the inner ring part 203, and the connecting part 202 is formed by a structure of the outer fire cover 200 between two adjacent second air passages 230.

As shown in fig. 7, the upper part of the outer fire cover 200 facing the bottom surface of the gas distribution plate 100 is upwardly recessed to form a second gas distribution groove 240, the second gas distribution groove 240 is communicated with the first gas distribution groove 110, and the fuel gas of the main fuel gas channel 21 passes through the first gas distribution groove 110 and then enters the second gas distribution groove 240, and finally forms a middle ring fire and an outer ring fire. The first gas distribution groove 110 and the second gas distribution groove 240, which are communicated with each other, form an outer ring gas distribution channel 400 of the outer flame cover 200, and the gas of the main gas channel 21 can be distributed through the outer ring gas distribution channel 400 to form a middle ring flame and an outer ring flame.

The gas separation disc of traditional combustor is split structure, and the gas separation disc includes gas separation disc base and gas separation disc lower cover, and outer loop gas separation passageway forms between gas separation disc base and gas separation disc lower cover, and this kind of structure leads to the part of combustor more, and the gas separation disc base is assembled after making respectively with gas separation disc lower cover, then assembles with outer fire lid again, and is higher than the cost, and has increased assembly work load, has reduced work efficiency. Compared with the traditional burner, the burner 10 provided by the utility model has the advantages that the second gas distribution groove 240 is designed on the outer fire cover 200, so that the outer ring gas distribution channel 400 is formed between the outer fire cover 200 and the gas distribution plate 100, the manufacturing and assembling procedures of the lower cover of the gas distribution plate can be omitted, the cost is reduced, the assembly workload is reduced, and the working efficiency is improved.

In some embodiments, the outer annular gas distribution channel 400 is taller than wider, which may reduce the circumferential width of the outer annular gas distribution channel 400 over the burner 10, which may facilitate increasing the cross-sectional area of the secondary air channel 500. The arrangement can further reduce the diameter of the burner 10, thereby concentrating the outer ring fire to the central area of the burner 10, not only being beneficial to improving the thermal efficiency of the burner 10, but also reducing the materials required for manufacturing the burner 10, thereby achieving the purpose of reducing the manufacturing cost. That is, setting the outer ring gas distribution passage 400 to be higher than wide can reduce the diameter of the burner 10 on the premise of ensuring the area of the secondary air passage 500, so that the heat load is more concentrated, which is advantageous in improving the heat efficiency and ensuring the sufficient supply of secondary air.

In some embodiments, the second gas distribution groove 240 penetrates the connection portion 202, and both ends of the second gas distribution groove 240 extend to the outer ring portion 201 and the inner ring portion 203, respectively, specifically, as shown in fig. 7, the second gas distribution groove 240 includes an inner ring groove 241 located on the inner ring portion 203, a communication groove 242 located on the connection portion 202, and an outer ring groove 243 located on the outer ring portion 201, the inner ring groove 241 is communicated with the main gas channel 21 and the inner fire cover 300, after the gas in the main gas channel 21 enters the inner ring groove 241, a part of the gas flows into the outer ring groove 243 after flowing into the communication groove 242 and finally forms an outer ring fire, and another part flows into the inner fire cover 300 and finally forms a middle ring fire.

More specifically, the number of the inner ring grooves 241 is plural, each inner ring groove 241 is an arc-shaped groove extending in the circumferential direction of the outer fire cover 200, and the plurality of inner ring grooves 241 are disposed around the penetration hole 220 and on the same circumference, so that the plurality of inner ring grooves 241 can communicate with the main gas passage 21 in a ring shape after the outer fire cover 200 is assembled with the gas distribution plate 100.

In order to form the outer ring fire, as shown in fig. 5 and 7, an outer ring fire hole 210 is provided at the outer ring portion 201 of the outer fire cover 200, the outer ring fire hole 210 penetrates the outer ring portion 201 of the outer fire cover 200 and communicates with the outer ring groove 243, and the gas flowing to the outer ring groove 243 flows out from the outer ring fire hole 210 and is ignited, thereby forming the outer ring fire.

In some embodiments, the axis of the outer ring fire hole 210 is disposed at an angle with respect to the vertical, for example, the angle may be 45 ° or 60 °, and the angle may be flexibly adjusted according to the requirement, and is not limited to a specific value. One end of the outer ring fire hole 210 forms a gas inlet on the inner wall surface of the outer fire cover 200, and the other end of the outer ring fire hole 210 forms a gas outlet on the outer side wall surface of the outer fire cover 200.

In some embodiments, the number of the outer ring fire holes 210 is multiple, the gas outlets of the outer ring fire holes 210 on the outer wall surface of the outer fire cover 200 are arranged in a circular shape, that is, the gas outlets are arranged at intervals on the outer wall surface of the outer fire cover 200 in a circular shape, and the intervals between two adjacent gas outlets may be equal or unequal. In some embodiments, the outer ring fire holes 210 have a circular cross-sectional shape in a direction perpendicular to the central axis thereof, and the plurality of outer ring fire holes 210 are radially formed on the outer fire cover 200, so that the range of the outer ring fire can be enlarged, and the heating effect can be improved. Of course, in other embodiments, the cross-sectional shape of the outer ring fire hole 210 in the direction perpendicular to the central axis thereof may be provided in other shapes such as square, oval, etc., as desired.

With continued reference to fig. 5 and 7, the top surface of the outer ring portion 201 of the outer fire cover 200 is inclined, and the top surface of the outer ring surface is inclined outwardly from bottom to top in the vertical direction. In order to ignite the gas released from the outer ring fire holes 210, a fire passing structure 250 is provided on the outer ring portion 201 of the outer fire cover 200, and the outer ring fire is ignited by the middle ring fire through the fire passing structure 250.

In some embodiments, as shown in fig. 6, the flame propagation structure 250 includes flame propagation grooves 252, and the flame propagation grooves 252 are located at the top of the outer ring portion 201 of the outer flame cover 200 and extend through the entire outer ring portion 201 in the radial direction of the outer flame cover 200. In some embodiments, the flame transfer structure 250 further includes flame transfer holes 251, the flame transfer holes 251 being configured to communicate the flame transfer grooves 252 with the outer ring groove 243 located inside the outer ring portion 201, the flame transfer holes 251 penetrating the outer ring portion 201 of the outer flame cover 200 and communicating with the outer ring groove 243.

In some embodiments, the fire transfer hole 251 is a straight hole, and the central axis of the fire transfer hole 251 is inclined with respect to the vertical direction, where the included angle between the central axis of the fire transfer hole 251 and the vertical direction may be 60 °, and of course, the included angle between the central axis of the fire transfer hole 251 and the vertical direction may be flexibly adjusted to other angles according to the requirement besides 60 °. One end of the fire transfer hole 251 forms a fire transfer inlet on the outer wall surface of the outer ring portion 201, and the other end of the fire transfer hole 251 forms a fire transfer outlet on the inner wall surface of the outer ring groove 243. Further, the number of the fire transfer holes 251 is plural, the plurality of fire transfer holes 251 are radially arranged on the outer fire cover 200, and the fire transfer inlets of the plurality of fire transfer holes 251 are circularly arranged on the outer fire cover 200. The fire transfer groove 252 may be in communication with one of the fire transfer holes 251.

In some more specific embodiments, the cross-sectional shape of the fire transfer hole 251 in the direction perpendicular to the central axis thereof is circular, and the aperture of the fire transfer hole 251 is smaller than that of the outer ring fire hole 210, thereby functioning as a fire-avoiding position for the pot holder foot piece. Of course, in other embodiments, the cross-sectional shape of the fire transfer hole 251 in the direction perpendicular to the central axis thereof may be provided in other shapes such as square, oval, etc., as desired. In some more specific embodiments, the center position of the flame transfer inlet of the flame transfer holes 251 is lower than the center position of the gas outlet of the outer ring flame holes 210, thereby reducing the height of the flame at the flame-place, reducing the contact of the flame at the flame-place with the foot pieces, and thus reducing the generation of CO.

With continued reference to fig. 5 and 7, the outer flame cover 200 is further provided with an outer ring flame stabilizing groove 260, the outer ring flame stabilizing groove 260 is a ring groove formed on the annular side wall surface of the outer flame cover 200, and the ring groove is disposed below the gas outlet of the outer ring flame hole 210. And, the outer flame cover 200 is further provided with an outer ring flame stabilizing hole 270, the outer ring flame stabilizing hole 270 penetrates through the outer ring portion 201 of the outer flame cover 200, one end of the outer ring flame stabilizing hole 270 forms a first flame stabilizing opening in the outer ring flame stabilizing groove 260, and the other end forms a second flame stabilizing opening on the inner wall surface of the outer ring groove 243.

In some embodiments, the number of the outer ring flame stabilizing holes 270 is plural, the plurality of outer ring flame stabilizing holes 270 are radially disposed on the outer flame cover 200, the first flame stabilizing openings of the plurality of outer ring flame stabilizing holes 270 are arranged in the outer ring flame stabilizing groove 260 to form a circle, the second flame stabilizing openings of the plurality of outer ring flame stabilizing holes 270 are arranged in the inner wall surface of the outer ring groove 243 to form a circle, and the circumference of the second flame stabilizing openings of the plurality of outer ring flame stabilizing holes 270 is located outside the circumference of the gas inlet of the plurality of outer ring flame holes 210.

In order to assemble the outer fire cover 200 and the gas distribution plate 100, as shown in fig. 4 and 7, the inner wall surface of the insertion hole 130 of the gas distribution plate 100 is provided with an assembling protrusion 150 protruding from the center of the gas distribution plate 100, the assembling protrusion 150 is provided with a first assembling hole 151, the bottom surface of the inner ring portion 203 of the outer fire cover 200 is provided with a second assembling hole 280, the first assembling hole 151 and the second assembling hole 280 are arranged opposite to each other, and the connecting piece is connected in the first assembling hole 151 and the second assembling hole 280.

In some embodiments, the number of the assembling protrusions 150 is plural, the assembling protrusions 150 are arranged on the inner wall surface of the insertion hole 130 to form a circle, at least one first assembling hole 151 is provided on each assembling protrusion 150, correspondingly, a plurality of second assembling holes 280 are provided on the bottom surface of the inner ring 203 of the outer fire cover 200, the plurality of second assembling holes 280 are disposed around the circumference of the penetrating hole 220, and the first assembling holes 151 and the second assembling holes 280 which are disposed oppositely are a group and are connected by a connecting piece. Optionally, the connector is a screw. In one embodiment of the present utility model, the number of the first assembly holes 151 and the second assembly holes 280 is four, and of course, in other embodiments, the number of the first assembly holes 151 and the second assembly holes 280 may be flexibly adjusted according to the requirements.

In order to improve the assembly stability of the outer fire cover 200 and the gas distribution plate 100, the outer fire cover 200 is fastened on the gas distribution plate 100, specifically, an annular side wall plate 209 protruding downwards is formed on the outer side of the outer annular groove 243 on the outer fire cover 200, the annular side wall plate 209 is sleeved outside the gas distribution plate 100, and the inner wall surface of the annular side wall plate 209 is abutted with the outer wall surface of the gas distribution plate 100.

Fig. 8 is a schematic structural view of an inner fire cover 300 of a burner 10 according to an embodiment of the present utility model at a certain viewing angle, and fig. 9 is a schematic structural view of the inner fire cover 300 of the burner 10 according to an embodiment of the present utility model at another viewing angle, wherein the inner fire cover 300 is generally round, as shown in fig. 8 and 9, and the inner fire cover 300 has a size substantially the same as that of the inner ring 203 of the outer fire cover 200, so that the inner fire cover 300 is disposed substantially opposite to the inner ring 203 of the outer fire cover 200 after the inner fire cover 300 is disposed on the outer fire cover 200.

In order to improve the assembly accuracy of the inner fire cover 300 and the outer fire cover 200, as shown in fig. 5, the positioning posts 206 are protruded on the inner ring 203 of the outer fire cover 200, and positioning holes (not shown) are provided in the inner fire cover 300, and the positioning of the inner fire cover 300 and the outer fire cover 200 is achieved by inserting the positioning posts 206 into the positioning holes.

Specifically, as shown in fig. 8 and 9, the inner fire cover 300 includes a cover cap 302 and a cover body 301 which are separately provided, the cover body 301 includes an air center passage pipe 303, an inner annular fire portion 304 and an intermediate annular fire portion 305 which are provided in this order from inside to outside, and the cover cap 302 is provided on top of the air center passage pipe 303 to prevent foreign matter from entering the burner 10. In some embodiments, a cap 302 is removably attached to the top opening of the air center channel tube 303 for mating the burner 10 with a dry combustion apparatus.

The air central passage tube 303 is used for being in plug-in fit with the air tube 23 of the burner 20 passing through the through hole 220 of the outer fire cover 200. The burner of the traditional burner is generally matched with the gas distribution plate, and the inner fire cover is matched with the gas distribution plate, so that more matching surfaces and sealing surfaces are caused, the concentricity of the inner fire cover and the burner is poor, and uneven gas flow of the inner fire hole is easily caused.

In some embodiments, a fourth annular stepped surface 311 is formed on the outer wall surface of the air central passage tube 303, the air tube 23 of the burner 20 is sleeved outside the air central passage tube 303, and the top of the air tube 23 abuts against the fourth annular stepped surface 311, and the fourth annular stepped surface 311 has a limiting effect, so that not only the assembly height of the inner fire cover 300 can be limited, but also the assembly stability of the inner fire cover 300 can be improved.

The inner ring fire part 304 is arranged between the top of the air central channel pipe 303 and the top of the middle ring fire part 305, and an auxiliary fuel gas cavity 306 with a downward opening and a ring shape is formed between the top and the top of the air central channel pipe 303, the auxiliary fuel gas cavity 306 is arranged above the auxiliary fuel gas channel 22 and is communicated with the auxiliary fuel gas channel 22, and fuel gas flowing out of the auxiliary fuel gas channel 22 enters the auxiliary fuel gas cavity 306. An inner ring fire hole 307 is provided in the inner ring fire portion 304, and the fuel gas introduced into the secondary fuel gas chamber 306 flows out of the inner ring fire hole 307 and is ignited to form an inner ring fire.

In some embodiments, the inner ring fire portion 304 has a conical structure, and multiple layers of inner ring fire holes 307 are provided on the inner ring fire portion 304 from top to bottom, each layer of inner ring fire holes 307 includes multiple inner ring fire holes 307 which are arranged in a circular shape, and the inner ring fire holes 307 included in two adjacent layers of inner ring fire holes 307 can be arranged in a staggered manner, so as to improve the uniformity of the inner ring fire and ensure the structural strength of the inner fire cover 300. By providing multiple layers of inner ring fire holes 307, a larger total area of the inner ring fire holes 307 can be provided, and the larger total area of the inner ring fire holes 307 can be adapted to a larger inner ring gas flow, so that the heat load in the central area of the burner 10 is further increased, and the heat efficiency is improved.

The middle annular flame portion 305 is of annular configuration, and the middle annular flame portion 305 is configured to abut against the inner annular portion 203 of the outer flame cover 200, and in some embodiments, the width of the middle annular flame portion 305 in the radial direction of the inner flame cover 300 is equal to the width of the middle annular flame portion 305 in the radial direction of the outer flame cover 200. The middle ring fire portion 305 is provided with a middle ring fire hole 308 in a penetrating manner, and the middle ring fire hole 308 communicates with the inner ring groove 241 of the outer fire cover 200.

In some embodiments, the number of the middle fire holes 308 is plural, the plurality of middle fire holes 308 are radially disposed on the inner fire cover 300, the bottom ends of the middle fire holes 308 form gas inlets on the annular bottom surface of the middle fire portion 305, the top ends of the middle fire holes 308 form gas outlets on the annular side wall surface of the outer fire cover 200, and the plurality of gas outlets are arranged in a circle on the annular side wall surface of the outer fire cover 200. In some embodiments, the cross-sectional shape of the middle fire hole 308 along a direction perpendicular to its central axis is circular, although in other embodiments, the cross-sectional shape of the middle fire hole 308 along a direction perpendicular to its central axis may be a regular shape or an irregular shape such as a square hole, a kidney hole, etc.

In order to realize communication between the middle ring air holes 308 and the inner ring groove 241 of the outer cover 200, as shown in fig. 5 and 7, the middle ring air holes 204 are provided in the outer cover 200 so as to penetrate therethrough, and the middle ring air holes 204 communicate with the inner ring groove 241. The fuel gas of the main fuel gas channel 21 enters the outer ring gas distribution channel 400 for distribution, wherein a part of fuel gas flows out from the outer ring fire holes 210 and is ignited to form outer ring fire, and the other part flows into the inner fire cover 300 through the middle ring fire distribution holes 204 and flows out from the middle ring fire holes 308 and is ignited to finally form middle ring fire. Because the gas flow of the main gas passage 21 is large, the gas distribution structure can provide more gas for the middle ring fire, thereby increasing the heat load of the central area of the burner 10 and improving the heat efficiency of the burner 10.

In some embodiments, the number of the middle ring fire air-dividing holes 204 is plural, and each inner ring groove 241 is correspondingly provided with plural middle ring fire air-dividing holes 204, and plural middle ring fire air-dividing holes 204 are arranged in a circle on the outer fire cover 200. In some embodiments, the cross section of the middle ring fire gas distribution holes 204 is circular, although in other embodiments, the cross section of the middle ring fire gas distribution holes 204 may be square, kidney-shaped, or other regular or irregular shapes as desired.

In some embodiments, as shown in fig. 5, a gas mixing ring groove 205 is provided on the top surface of the inner ring portion 203 of the outer fire cover 200, the gas mixing ring groove 205 is communicated with the middle fire gas distribution holes 204, the gas passing through all the middle fire gas distribution holes 204 is collected in the gas mixing ring groove 205, and the gas mixing ring groove 205 is communicated with the gas inlets formed by the bottom ends of all the middle fire holes 308 on the annular bottom surface of the middle fire portion 305, so that the gas entering the gas mixing ring groove 205 can be discharged from the inner fire cover 300 through a plurality of middle fire holes 308.

With continued reference to fig. 8, the inner fire cover 300 is further provided with a middle ring flame stabilizing groove 309, wherein the middle ring flame stabilizing groove 309 is a ring groove formed on the annular side wall surface of the inner fire cover 300, and the ring groove is disposed below the gas outlet of the middle ring fire hole 308. And, the inner flame cover 300 is further provided with a middle ring flame stabilizing hole 310, the middle ring flame stabilizing hole 310 penetrates through the middle ring flame portion 305 of the inner flame cover 300, one end of the middle ring flame stabilizing hole 310 forms a third flame stabilizing opening in the middle ring flame stabilizing groove 309, and the other end forms a fourth flame stabilizing opening on the bottom surface of the middle ring flame portion 305.

In some embodiments, the number of the middle ring flame stabilizing holes 310 is a plurality, the middle ring flame stabilizing holes 310 are radially arranged on the inner flame cover 300, the third flame stabilizing openings of the middle ring flame stabilizing holes 310 are circularly arranged in the middle ring flame stabilizing groove 309, the fourth flame stabilizing openings of the middle ring flame stabilizing holes 310 are circularly arranged on the bottom surface of the middle ring flame part 305, and the circumference of the fourth flame stabilizing openings is located outside the circumference of the gas inlet of the middle ring flame holes 308.

In order to be able to ignite the gas, the gas range further comprises an ignition needle (not shown in the figures). With continued reference to fig. 4, a first positioning groove 160 is further provided on the gas distribution plate 100, and the first positioning groove 160 is used for positioning the ignition needle. Specifically, the first positioning groove 160 is disposed on an inner wall surface of any one of the first air channels 120, the first positioning groove 160 is an arc-shaped groove, the ignition needle is substantially cylindrical, and the ignition needle passes through the first air channel 120 and part of the ignition needle abuts against the arc-shaped groove to complete positioning.

The gas range further includes a thermocouple (not shown) capable of generating electric power in a heating state, so that a control valve controlling the opening of the gas passage is maintained in a state of opening the gas passage, thereby ensuring continuous supply of gas. With continued reference to fig. 4, a second positioning groove 170 is further provided on the gas distribution plate 100, and the first positioning groove 160 is used for positioning the thermocouple. Specifically, the second positioning groove 170 may be disposed on an inner wall surface of any one of the first air passages 120, and in some embodiments, the second positioning groove 170 and the first positioning groove 160 are opened on an inner wall surface of the same first air passage 120. In some embodiments, the second positioning slot 170 is an arcuate slot, the thermocouple passes through the first air channel 120 and a portion of the thermocouple is positioned against the arcuate slot.

In order to provide the burner 10 with good fire protection performance, as shown in fig. 5, an inner ring gas deflector 208 and a fire protection gas cavity 207 are provided on the outer fire cover 200, and the fire protection gas cavity 207 and the gas mixing ring groove 205 are located on the same circumference of the outer fire cover 200. And a fire protection hole is provided in the inner fire cover 300, penetrating the middle fire part 305 of the inner fire cover 300. It should be noted that, the structures of the fire protection hole and the middle fire hole 308 are not different, and are all located on the same annular surface of the inner fire cover 300, but only the positions on the inner fire cover 300 are different, so that the fire protection hole is not communicated with the middle fire air distribution hole 204, and the middle fire hole 308 is communicated with the middle fire air distribution hole 204.

The fire protection gas cavity 207 is communicated with the auxiliary gas channel 22 and the fire protection hole, when the gas stove is in a small fire state, the main gas channel 21 is in a closed state, part of gas entering the auxiliary gas cavity 306 from the auxiliary gas channel 22 is blocked by the inner ring gas guide plate 208 and then is introduced into the fire protection gas cavity 207, and the fire protection gas cavity 207 is communicated with the fire protection hole, so that gas can be combusted through the fire protection hole in the small fire state, and flames are detected by thermocouples arranged near the fire protection hole, and the thermocouples are always in a working state, so that good fire protection characteristics of the burner 10 in both big fire and small fire are ensured.

The burner 10 provided by the embodiment of the utility model has the following advantages:

1. in the burner 10, the middle ring fire gas distribution holes 204 are arranged on the outer fire cover 200, and a part of fuel gas in the outer ring gas distribution channel 400 is distributed to the middle ring fire holes 308 of the inner fire cover 300, so that the central fire heat load is increased, and the heat efficiency of the burner 10 is improved.

2. The burner 10 is provided with the thermocouple between the middle ring fire hole 308 and the outer ring fire hole 210, and part of the inner ring fuel gas in the case of small fire is led into the fire protection hole near the thermocouple by arranging the inner ring fuel gas guide plate 208 and the fire protection fuel gas cavity 207 on the outer fire cover 200, so that the burner 10 is ensured to have good fire protection performance in the case of small fire.

3. The outer ring gas distribution passage 400 of the burner 10 has a feature of being higher than wide, so that the diameter of the burner 10 is reduced on the premise of ensuring that the area of the secondary air passage 500 is sufficient, the heat load is more concentrated, the heat efficiency is improved, and the secondary air supply is ensured to be sufficient.

4. The burner 10 has the advantages that the second air distribution groove 240 is formed in the outer fire cover 200, so that the outer fire cover 200 plays a role of an upper cover of an air distribution plate in a traditional burner, namely, the upper cover of the traditional air distribution plate and the outer fire cover are designed into an integral structure, the assembly quantity is reduced, and the burner is convenient to process and assemble.

5. The burner 10 has the characteristic of assembling the inner fire cover 300 with the burner 20, so that the inner fire cover 300 and the burner 20 can be in plug fit, instead of assembling the inner fire cover and the outer fire cover as in the traditional burner, the plug fit of the inner fire cover 300 and the burner 20 can reduce the sealing surface and the assembling surface, the concentricity of the inner fire cover 300 and the burner 20 is improved, and the center of the burner 10 is provided with the secondary air inner channel, so that the air supply of inner ring fire can be enhanced, and the full combustion is ensured.

6. The central position of the fire transmission hole 251 on the outer fire cover 200 is set to be lower than the central position of the outer ring fire hole 210, so that the flame height of the fire hole at the fire avoiding position is reduced, the flame is prevented from burning the foot piece, and the smoke generation is reduced.

The utility model also provides a gas stove which comprises the burner 20 and the burner 10, and the gas stove has the characteristics of small volume, simple assembly, large central heat load, high heat efficiency, excellent comprehensive performance and the like by using the burner 10.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A burner, comprising:

a gas distribution plate (100);

the outer fire cover (200) is arranged above the gas distribution plate (100), an outer ring gas distribution channel (400) is formed between the gas distribution plate (100) and the outer fire cover (200), the outer ring gas distribution channel (400) can be communicated with a main gas channel (21) of the burner (20), an outer ring fire hole (210) and a fire transmission structure (250) which are communicated with one end of the outer ring gas distribution channel (400) are arranged on the outer fire cover (200), and a gas outlet is formed on the outer wall surface of the outer fire cover (200) through the outer ring fire hole (210);

the inner fire cover (300) is arranged above the outer fire cover (200), an intermediate fire hole (308) is formed in the inner fire cover (300), and the intermediate fire hole (308) is communicated with the other end of the outer ring gas distribution channel (400);

the fire transfer structure (250) is used for enabling the flame of the middle ring fire generated at the middle ring fire hole (308) to ignite the fuel gas at the outer ring fire hole (210) to form outer ring fire, the fire transfer structure (250) comprises a fire transfer hole (251), the fire transfer hole (251) penetrates through the outer fire cover (200) and forms a fire transfer inlet on the outer wall surface of the outer fire cover (200), and the center position of the fire transfer inlet is lower than the center position of the fuel gas outlet so as to form a pot frame foot piece avoiding position.

2. A burner according to claim 1, wherein,

the fire transfer holes (251) are straight holes, and the central axes of the fire transfer holes (251) are obliquely arranged compared with the vertical direction.

3. A burner according to claim 1, wherein,

the aperture of the fire passing hole (251) is smaller than that of the outer ring fire hole (210).

4. A burner according to claim 1, wherein,

the fire transmission structure (250) further comprises a fire transmission groove (252), the fire transmission groove (252) is located at the top of the outer fire cover (200) and penetrates through the outer ring portion (201) of the outer fire cover (200) along the radial direction of the outer fire cover (200), and the fire transmission hole (251) is communicated with the fire transmission groove (252) and the outer ring gas distribution channel (400).

5. A burner according to claim 4, wherein,

the number of the fire transfer holes (251) is a plurality, the number of the fire transfer grooves (252) is one, and the fire transfer grooves (252) are communicated with one of the plurality of the fire transfer holes (251).

6. A burner as claimed in any one of claims 1 to 5,

the outer fire cover (200) is further provided with an outer ring flame stabilizing groove (260), the outer ring flame stabilizing groove (260) is a ring groove formed in the annular side wall surface of the outer fire cover (200), and the ring groove is arranged below the fuel gas outlet.

7. A burner according to claim 6, wherein,

the outer flame cover (200) is further provided with an outer ring flame stabilizing hole (270), the outer ring flame stabilizing hole (270) penetrates through the outer ring portion (201) of the outer flame cover (200), one end of the outer ring flame stabilizing hole (270) is provided with a first flame stabilizing opening in the outer ring flame stabilizing groove (260), and the other end of the outer ring flame stabilizing hole (270) is provided with a second flame stabilizing opening on the inner wall surface of the outer ring portion (201).

8. A burner as claimed in claim 7, wherein,

the number of the outer ring flame stabilizing holes (270) is a plurality, and the outer ring flame stabilizing holes (270) are radially arranged on the outer fire cover (200).

9. A burner as claimed in claim 8, wherein,

the plurality of first flame stabilizing openings are distributed in the outer ring flame stabilizing groove (260) to form a circle;

and/or a plurality of second flame stabilizing openings are distributed on the inner wall surface of the outer ring part (201) to form a circle.

10. Gas stove, characterized by comprising a burner (20) and a burner according to any of claims 1-9.