CN213066108U - Bottom cup, combustor and stove - Google Patents

Abstract

The utility model discloses a bottom cup, combustor and at cooking utensils. The bottom cup comprises: the cup comprises a cup body, a first sealing ring and a second sealing ring, wherein the cup body is provided with a first ring air cavity and a second ring air cavity arranged outside the first ring air cavity; the first ejector pipe and the second ejector pipe are connected to the bottom of the cup body in a uniform mode, the air outlet of the first ejector pipe is communicated with the first annular air cavity, and the air outlet of the second ejector pipe is communicated with the second annular air cavity; the bottom cup is used for being matched and connected with the fire cover, so that the first ring air cavity is used for being communicated with the first ring fire cavity of the fire cover, and the second ring air cavity is used for being communicated with the second ring fire cavity of the fire cover. Therefore, the structure of the burner can be simplified, and the assembly process of the burner can be simplified.

Description

Bottom cup, combustor and stove

Technical Field

The utility model relates to a gas cooking utensils technical field, in particular to end cup, combustor and cooking utensils.

Background

Conventional upper air inlet burners typically include a base cup, an air distributor plate disposed between the base cup and the fire cover assembly for mixing the mixed gas stream flowing to the fire cover assembly, and a fire cover assembly. Even in some burners, the bottom cup is divided into an upper bottom cup and a lower bottom cup which are spliced with each other.

Thus, the structure of the burner is complicated, and the product assembly is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a bottom cup, aims at solving the more complicated technical problem of structure of traditional enterprising wind combustor.

In order to achieve the above object, the present invention provides a bottom cup for a burner. The bottom cup comprises:

the cup comprises a cup body, a first sealing ring and a second sealing ring, wherein the cup body is provided with a first ring air cavity and a second ring air cavity arranged outside the first ring air cavity; and

the first ejector pipe and the second ejector pipe are connected to the bottom of the cup body in a uniform mode, the air outlet of the first ejector pipe is communicated with the first annular air cavity, and the air outlet of the second ejector pipe is communicated with the second annular air cavity;

the bottom cup is used for being matched and connected with the fire cover, so that the first ring air cavity is used for being communicated with the first ring fire cavity of the fire cover, and the second ring air cavity is used for being communicated with the second ring fire cavity of the fire cover.

Optionally, the air inlet of the first ejector pipe and the air inlet of the second ejector pipe are both located on the same side of the cup body.

Optionally, the cup body further has a central through hole formed in the inner side of the first annular air cavity, a partition plate is arranged at the bottom of the cup body on one side where the air inlet of the first injection pipe and the air inlet of the second injection pipe are located, and the air inlet of the first injection pipe and the air inlet of the second injection pipe are both arranged on one side, far away from the central through hole, of the partition plate.

Optionally, a first splitter plate is convexly arranged on the side surface of the partition plate, which is far away from the central through hole, and the first splitter plate is arranged between the air inlet of the first injection pipe and the air inlet of the second injection pipe.

Optionally, the air inlet of the first ejector pipe is arranged on the side surface of the partition plate far away from the central through hole, and/or the air inlet of the second ejector pipe is arranged on the side surface of the partition plate far away from the central through hole.

Optionally, the partition plate includes a first partition plate vertically disposed with the air inlet end of the first ejector pipe, a second partition plate vertically disposed with the air inlet end of the second ejector pipe, and a first connecting partition plate connecting the first partition plate and the second partition plate.

Optionally, the second injection pipe comprises a main injection pipe and a pressure boost injection pipe, the main injection pipe is arranged below the central through hole of the cup body, the pressure boost injection pipe is arranged on one side of the main injection pipe, and the first injection pipe is arranged on the other side of the main injection pipe.

Optionally, the main injection pipe comprises a first straight pipe with an air inlet and a first arc-shaped pipe connected with the first straight pipe, and the first arc-shaped pipe is communicated with the second annular air cavity.

Optionally, the bottom wall of the second annular air cavity is recessed downwards at the communication position of the main ejector pipe and the second annular air cavity to form the first arc-shaped pipe.

Optionally, the pressure-boosting ejector pipe comprises a second straight pipe with an air inlet and a second arc-shaped pipe connected with the second straight pipe, the second arc-shaped pipe is communicated with the second annular air cavity, and the overall extension direction of the second arc-shaped pipe is the same as that of the first arc-shaped pipe; and/or the presence of a gas in the gas,

the first injection pipe comprises a third straight pipe with an air inlet and a third arc-shaped pipe connected with the third straight pipe, the third arc-shaped pipe is communicated with the first annular air cavity, and the overall extending direction of the third arc-shaped pipe is opposite to that of the first arc-shaped pipe.

Optionally, the main ejector pipe is located right below the central through hole; and/or the presence of a gas in the gas,

the cross section area of the main injection pipe is larger than that of the pressurizing injection pipe.

Optionally, the bottom cup is integrally cast by gravity casting.

Optionally, the cup body includes a bottom plate having a central through hole, and a first annular protrusion, a second annular protrusion, and a third annular protrusion which are disposed on an upper surface of the bottom plate and are sequentially spaced from inside to outside in a radial direction, the first annular air cavity is formed between the first annular protrusion and the second annular protrusion, and the second annular air cavity is formed between the second annular protrusion and the third annular protrusion.

The utility model discloses still provide a combustor, include as above end cup.

The utility model also provides a cooking utensils, include as above the combustor.

The utility model discloses in, draw through making first drawing penetrate pipe and second draw and penetrate a tub homogeneous body coupling in the bottom of cup body, reducible first drawing penetrate pipe and second draw penetrate the pipe, with the equipment step of cup body to can simplify the assembling process of combustor. Furthermore, the utility model discloses in, need not set up the gas dish of dividing, perhaps, will divide gas dish integrated into one piece in end cup, and make end cup and fire lid direct fit be connected, can simplify the structure of combustor, reducible gas dish and end cup and the equipment step of fire lid moreover to can further simplify the assembling process of combustor, in order to reduce manufacturing cost.

Drawings

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

Fig. 1 is a schematic view of a burner according to an embodiment of the present invention;

FIG. 2 is a schematic view of the combustor of FIG. 1 from another perspective;

FIG. 3 is a cross-sectional view of the burner of FIG. 1 taken along a section line;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a cross-sectional view of the burner of FIG. 1 taken along another section line;

FIG. 6 is a schematic view of the bottom cup of FIG. 3;

FIG. 7 is a cross-sectional view of the base cup of FIG. 6 taken along a multi-line segment;

FIG. 8 is a cross-sectional view of the bottom cup of FIG. 6;

FIG. 9 is a schematic view of the bottom cup of FIG. 6 from another perspective;

FIG. 10 is a schematic view of a cross-section of the bottom cup of FIG. 6;

FIG. 11 is a schematic view of the fire lid of FIG. 3;

FIG. 12 is a schematic view of the fire lid of FIG. 11 from another perspective;

FIG. 13 is a cross-sectional view of the fire lid of FIG. 12;

FIG. 14 is a partial schematic view of the fire lid of FIG. 13;

FIG. 15 is a schematic longitudinal cross-section of the fire lid of FIG. 11;

FIG. 16 is a cross-sectional view of the fire lid of FIG. 11;

FIG. 17 is a schematic view of the nozzle base of FIG. 3; wherein, the nozzle is arranged on the nozzle base;

FIG. 18 is a schematic view of the nozzle base of FIG. 3 from another perspective;

FIG. 19 is a bottom view of the nozzle base of FIG. 18;

FIG. 20 is a cross-sectional view of the nozzle base of FIG. 18.

The reference numbers illustrate:

100. a burner; 10. a bottom cup; 11. a cup body; 111. a first annular air cavity; 112. a second annular air cavity; 113. a central through hole; 114. a partition plate; 1141. a first separator; 1142. a second separator; 1143. a first connecting barrier; 1144. a second connecting partition plate; 115. a first splitter plate; 116. a second splitter plate; 11a, a bottom plate; 11b, a first annular projection; 11c, a second annular protrusion; 11d, a third annular projection; 11e, an annular inclined side plate; 12. a first ejector tube; 121. a third straight pipe; 122. a third arcuate tube; 13. a main ejector pipe; 131. a first straight pipe; 132. a first arcuate tube; 14. a pressure boost injection pipe; 141. a second straight pipe; 142. a second arcuate tube; 20. a fire cover; 21. a first annular combustion chamber; 22. a first ring fire hole; 23. a second ring of combustion chambers; 24. a second annular fire hole; 25. a gas passing through hole; 26. an annular top plate; 27. a first annular side plate; 27a, a first connecting ring is convex; 27b, a limiting ring is convex; 27c, a first accommodating step; 271. an annular flame stabilizing groove; 272. a third ring fire hole; 273. an air inlet ring groove; 28. an annular convex plate; 29. a second annular side plate; 29a, a second connecting ring protrusion; 29b, a second accommodating step; 30. a nozzle; 40. a nozzle base; 41. a mounting substrate; 411. a gas pipe assembly hole; 412. a stop protrusion; 42. a support pillar; 421. a gas pipe assembly channel; 422. a nozzle mounting hole; 423. avoiding a tangent plane; 424. the windward side; 50. a shunt fire hole; 60. connecting plate

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

Detailed Description

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

It should be noted that if the embodiments of the present invention are described with reference to "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The utility model provides a end cup and combustor, end cup is used for the combustor, the combustor is last air inlet combustor.

Specifically, as shown in fig. 1 to 5, the burner 100 includes a panel (not shown), a bottom cup 10, a fire cover 20, a nozzle 30, a nozzle base 40, and the like, and the bottom cup 10, the fire cover 20, and the nozzle 30 are installed above the panel, which will be described below.

In an embodiment of the present invention, as shown in fig. 2 to 10, the bottom cup 10 includes:

the cup comprises a cup body 11, wherein the cup body 11 is provided with a first annular air cavity 111 (namely, a first annular air inlet cavity, which is simply referred to as the first annular air cavity 111, and the same applies below), and a second annular air cavity 112 arranged outside the first annular air cavity 111; and

the cup comprises a cup body 11, a first ejector pipe 12 and a second ejector pipe, wherein the first ejector pipe 12 and the second ejector pipe are both arranged at the bottom of the cup body 11, the first ejector pipe 12 is communicated with a first annular air cavity 111, and the second ejector pipe is communicated with a second annular air cavity 112.

Specifically, the second annular air cavity 112 and the first annular air cavity 111 are distributed at intervals from inside to outside along the radial direction.

Specifically, the air outlet of the first ejector tube 12 is communicated with the first annular air cavity 111, and the air outlet of the second ejector tube is communicated with the second annular air cavity 112.

It should be noted that, in the present invention, the cup body 11 may further have more annular air inlet cavities and an ejector tube disposed opposite to the air inlet cavities, for example, the cup body 11 further has a third annular air cavity disposed outside the second annular air cavity 112, and the bottom cup 10 further includes a third ejector tube disposed at the bottom of the cup body 11 and communicated with the third annular air cavity; if the cup body 11 further has a fourth annular air cavity disposed inside the first annular air cavity 111, the bottom cup 10 further includes a fourth ejector tube disposed at the bottom of the cup body 11 and communicated with the fourth annular air cavity; for another example, the cup body 11 further has a fifth annular air cavity disposed between the first annular air cavity 111 and the second annular air cavity 112, and the bottom cup 10 further includes a fifth ejector tube disposed at the bottom of the cup body 11 and communicated with the fifth annular air cavity; and so on.

Moreover, it should be noted that the third ring air cavity, the fourth ejector tube and the fifth ring air cavity may be separately or simultaneously arranged.

Moreover, it should be noted that, when the annular inlet air chamber of the cup body 11 has more, the first annular air chamber 111 and the second annular air chamber 112 may be disposed adjacently or non-adjacently, for convenience of explanation, in the following description, if the annular inlet air chamber of the cup body 11 has more, the first annular air chamber 111 and the second annular air chamber 112 are mainly disposed adjacently for illustration, but this is not used for limiting the shrinkage of the present invention.

In the following examples of the present invention, for convenience of explanation, the cup body 11 is mainly described as having only the first annular air chamber 111 and the second annular air chamber 112, but this is not used to limit the shrinkage of the present invention; moreover, when the cup body 11 has more annular intake air chambers, the corresponding structure can be adapted, as will be briefly described below.

Specifically, a nozzle 30 is correspondingly disposed at the air inlet of each injection pipe to supply air to each injection pipe, so that the air supply paths corresponding to each combustion chamber of the burner 100 are relatively independent, such as individually controllable on/off and individually adjustable air supply power.

Specifically, the plurality of nozzles 30 are provided, and one nozzle 30 is correspondingly provided at each air inlet of the injection pipe, the nozzles 30 are arranged opposite to the air inlets of the corresponding injection pipes, and the gas ejected from the nozzles 30 attracts air (i.e., primary air) around the periphery to enter the corresponding injection pipes together, so as to form a mixed gas flow.

So, can draw through the difference respectively and penetrate the pipe, provide the mixed gas air current that air and gas mix in the annular air inlet chamber of difference to can be convenient for control alone to every gas circuit. Specifically, the mixed gas flow can be supplied to the first annular gas chamber 111 through the gas inlet of the first ejector tube 12, and the mixed gas flow can be supplied to the second annular gas chamber 112 through the gas inlet of the second ejector tube.

The mixed gas air current can flow along its circumference after getting into each annular air inlet intracavity, makes air and gas further mix on the one hand, and on the other hand makes mixed gas air current evenly distributed in each annular air inlet chamber.

Further, as shown in fig. 2 to 10, the first injection pipe 12 and the second injection pipe are integrally connected to the bottom of the cup body 11. Therefore, the assembling steps of the first injection pipe 12 and the second injection pipe with the cup body 11 can be reduced, and the assembling process of the burner 100 can be simplified.

Specifically, when more injection pipes need to be arranged, all the injection pipes can be integrally arranged with the cup body 11; however, it should be noted that, for burners 100 having a unique design and individual special requirements, special ejector tubes may be provided for detachable connection to the cup body 11.

Further, as shown in fig. 2 to 10, the bottom cup 10 (specifically, the cup body 11) is configured to be cooperatively connected with the fire cover 20, so that the first annular air chamber 111 is configured to communicate with the first annular fire chamber 21 of the fire cover 20, and the second annular air chamber 112 is configured to communicate with the second annular fire chamber 23 of the fire cover 20.

Specifically, in the utility model discloses in, fire lid 20 has first ring fire chamber 21 (be first ring fire chamber, the abbreviation is first ring fire chamber 21, the same down) and second ring fire chamber 23.

When the base cup 10 is applied to the burner 100, the base cup 10 is connected with the fire cover 20 in a matching manner, the first annular air cavity 111 is communicated with the first annular fire cavity 21, and the second annular air cavity 112 is communicated with the second annular fire cavity 23. Specifically, the upper ends of the annular air inlet cavities of the cup body 11 are provided with openings, and the lower ends of the annular fire chambers of the fire cover 20 are provided with openings, so that the annular air inlet cavities and the annular fire chambers which are correspondingly arranged are communicated.

Specifically, as shown in fig. 2 to 10, the fire cover 20 further has a first annular fire hole 22 and a second annular fire hole 24, the first annular fire hole 22 is communicated with the first annular fire cavity 21, a plurality of first annular fire holes 22 are annularly distributed, and the mixed gas flow entering the first annular fire cavity 21 is ejected from the first annular fire hole 22 to form a first annular flame; the second ring fire chamber 23 intercommunication, second ring fire hole 24 is annularly distributed has a plurality ofly, and the mixed gas air current that gets into in the second ring fire chamber 23 spouts from second ring fire hole 24 to form second ring flame.

It should be noted that, when the cup body 11 has more annular air inlet chambers, the fire cover 20 should be correspondingly provided with more annular fire chambers, and each annular fire chamber should be correspondingly provided with fire holes.

Thus, the bottom cup 10 is directly matched and connected with the fire cover 20, so that each correspondingly arranged annular air inlet cavity is communicated with the annular fire chamber. That is to say, the utility model discloses combustor 100 need not set up and divides the gas dish, or said differently, the utility model discloses combustor 100 will divide gas dish integrated into one piece in end cup 10, and make end cup 10 and fire lid 20 direct cooperation be connected, can simplify combustor 100's structure, reducible gas dish and end cup 10 and the equipment step of fire lid 20 moreover to can simplify combustor 100's assembling process, reduce manufacturing cost.

In this embodiment, at least two rows of the second annular fire holes 24 are provided.

Particularly, the utility model discloses in, draw through making first drawing and penetrate pipe 12 and second and penetrate a tub homogeneous body coupling in the bottom of cup body 11, reducible first drawing penetrates pipe 12 and second and draws penetrates the pipe, with cup body 11's equipment step to can simplify the assembling process of combustor 100. Moreover, in the utility model, the gas distribution plate is not needed, or the gas distribution plate is integrally formed on the bottom cup 10, so that the bottom cup 10 is directly matched and connected with the fire cover 20, and the structure of the burner 100 can be simplified; and the assembly steps of the gas distribution plate with the base cup 10 and the fire cover 20 can be reduced, so that the assembly process of the burner 100 can be further simplified to reduce the production cost.

In a specific embodiment, the fire cover 20 may be an integrally formed structure; or divided into a plurality of cover bodies, and each cover body is at least provided with an annular fire chamber.

In this embodiment, the fire cover 20 is an integrally formed structure. Thus, the burner cap 20 is integrally formed, so that the burner cap 20 can be mounted on the base cup 10 at one time, thereby simplifying the structure of the burner 100 and the assembly process of the burner 100. Moreover, the fire cover 20 is integrally formed, so that the diameter or equivalent diameter of the air through hole 25 in the middle of the fire cover 20 can be increased, and the air supplement area of the secondary air channel can be enlarged.

Specifically, the cup body 11 generally further has a central through hole 113 disposed inside the first annular air cavity 111, and the fire cover 20 further has an air passing through hole 25 disposed inside the first annular fire cavity 21, wherein the air passing through hole 25 is disposed corresponding to the central through hole 113 to form a secondary air passage. Thus, the outside air can enter the central through hole 113 from the bottom of the cup body 11 (and above the panel), and move to the fire cover 20 through the central through hole 113 and the air through hole 25 in sequence, so as to supplement air to the inner side of the fire cover 20, and make the gas inside the fire cover 20 burn sufficiently.

Further, as shown in fig. 2 to 10, the second injection pipe is provided with a plurality of (i.e., two or more, the same applies below). Specifically, the air outlets of the second ejector pipes are arranged at intervals in the circumferential direction of the second annular air cavity 112.

So, it is equipped with a plurality ofly to draw the pipe through making the second, and make a plurality of seconds draw the gas outlet that penetrates the pipe and set up at the interval in the circumference of second ring air cavity 112, can make a plurality of seconds draw the intraductal gas mixture air current of drawing and get into in second ring air cavity 112 from the different circumference position department of second ring air cavity 112, thereby make the gas mixture air current that gets into in second ring air cavity 112 can form pressure boost acceleration effect, thereby can improve the homogeneity of the gas mixture air current distribution in second ring air cavity 112, make the gas mixture air current distribution in second ring air cavity 112 even or comparatively even, thereby can improve the homogeneity that the second ring flame that combustor 100 corresponds distributes in circumference, thereby still can increase the power of second ring flame.

Specifically, as shown in fig. 2 to 10, the second injection pipe includes a main injection pipe 13 and a pressure-increasing injection pipe 14. In this embodiment, the number of the second injection pipes is two, and the second injection pipes are respectively a main injection pipe 13 and a pressurizing injection pipe 14, so as to simplify the structure of the bottom cup 10. Of course, in other embodiments, the number of the second injection pipes may be set to be more according to the size of the diameter/equivalent diameter of the second annular air cavity 112, the size of the diameter/equivalent diameter of the second injection pipe, and other factors, for example, the number of the second injection pipes may be 3, 4, 5, or 6, and the air outlets of the second injection pipes are uniformly distributed or approximately uniformly distributed in the circumferential direction.

Further, as shown in fig. 2 to 10, the main injection pipe 13 is disposed below the central through hole 113 of the cup body 11, the pressure-increasing injection pipe 14 is disposed on one side of the main injection pipe 13, and the first injection pipe 12 is disposed on the other side of the main injection pipe 13.

It can be understood, compare in the utility model discloses an another design "first ejector tube 12 is located and is drawn between tub 13 and the pressure boost ejector tube 14 to locate the below of the central through-hole 113 of cup body 11" (this design is not denied here, just in order to embody the advantage of "main ejector tube 13 is drawn in the below of central through-hole 113" better ", make main ejector tube 13 locate the below of central through-hole 113, and make pressure boost ejector tube 14 and first ejector tube 12 locate respectively and draw the both sides of tub 13, can make the end of giving vent to anger of main ejector tube 13 extend to the below of second ring air chamber 112 through the below of central through-hole 113 on the one hand, so that increase the length of main ejector tube 13, improve the ejection ability of main ejector tube 13; on the other hand, the design of the air outlet ends of the main injection pipe 13, the first injection pipe 12 and the pressurizing injection pipe 14 can be facilitated, so that the mutual interference can be prevented. In addition, the effective length of the first injection pipe 12 is increased. In addition, the main injection pipe 13 is designed to be thicker conveniently so as to enhance the injection capacity of the main injection pipe.

Further, as shown in fig. 2 to 10, the cross-sectional area of the main ejector pipe 13 is larger than that of the booster ejector pipe 14.

Therefore, the ejection capacity of the main ejection pipe 13 can be enhanced by making the main ejection pipe 13 thicker; moreover, the main ejector pipe 13 can be a main air inlet pipe of the second annular air cavity 112, the booster ejector pipe 14 can be an auxiliary air inlet pipe, and the mixed gas flow entering the second annular air cavity 112 from the booster ejector pipe 14 is used for boosting and accelerating the mixed gas flow entering the second annular air cavity 112 from the main ejector pipe 13.

Further, as shown in fig. 2 to 10, the air inlet of the first ejector pipe 12 and the air inlet of the second ejector pipe are both located on the same side of the cup body 11.

So, can be convenient for combustor 100 air feed on the one hand, on the other hand can avoid primary air and secondary air to appear robbing the gas phenomenon, promptly, can be convenient for make the air of other sides of cup body 11 (especially with the side relative of the air inlet place side of each ejector tube) get into in the secondary air passageway. In addition, the effective lengths of the first injection pipe 12 and the second injection pipe can be increased conveniently, so that the injection capacity of the injection pipe is enhanced.

Further, as shown in fig. 2 to 10, a partition plate 114 is disposed at one side of the bottom of the cup body 11 where the air inlet of the first injection pipe 12 and the air inlet of the second injection pipe are located, and the air inlet of the first injection pipe 12 and the air inlet of the second injection pipe are both disposed at one side of the partition plate 114 far away from the central through hole 113.

Specifically, the partition plate 114 is integrally connected to the outer surfaces of the first ejector pipe 12 and the second ejector pipe, in other words, the first ejector pipe 12 and the second ejector pipe are both inserted into the partition plate 114.

In this way, the primary air and the secondary air can be separated by the partition plate 114, so that the occurrence of the air robbing phenomenon can be further avoided.

Further, as shown in fig. 2 to 10, a first flow dividing plate 115 is convexly disposed on a side surface of the partition plate 114 away from the central through hole 113, and the first flow dividing plate 115 is disposed between an air inlet of the first ejector pipe 12 and an air inlet of the second ejector pipe.

Specifically, when a plurality of second ejector pipes are provided, the first flow dividing plate 115 is arranged between the air inlet of the first ejector pipe 12 and the air inlet of the second ejector pipe adjacent to the first ejector pipe 12; if two second injection pipes are disposed on two sides of the first injection pipe 12, two first flow dividing plates 115 are correspondingly disposed on two sides of the air inlet of the first injection pipe 12.

Therefore, the air entering the first injection pipe 12 and the air entering the second injection pipe can be separated by the first splitter plate 115, so that the phenomenon of air robbery of the primary air entering the first injection pipe 12 and the primary air entering the second injection pipe can be avoided.

It can be understood that if the second injection pipes are provided with a plurality of second injection pipes, the second injection pipes which are adjacently arranged exist, the side surface of the partition plate 114, which is far away from the central through hole 113, is convexly provided with a second flow dividing plate 116, and the second flow dividing plate 116 is arranged between the air inlets of the two adjacent second injection pipes, so that the phenomenon of gas robbery of primary air entering the two adjacent second injection pipes can be avoided.

In this embodiment, as shown in fig. 2, 9 and 10, the first flow dividing plate 115 is disposed between the air inlet of the first ejector pipe 12 and the air inlet of the main ejector pipe 13, and the second flow dividing plate 116 is disposed between the air inlet of the boost ejector pipe 14 and the air inlet of the main ejector pipe 13.

Of course, in other embodiments, the first splitter plate 115 and the second splitter plate 116 may be disposed on the nozzle base 40, as will be described in detail below.

Further, as shown in fig. 2, 9 and 10, the air inlet of the first ejector pipe 12 is disposed on the side of the partition plate 114 far from the central through hole 113, and/or the air inlet of the second ejector pipe is disposed on the side of the partition plate 114 far from the central through hole 113. Thus, the difficulty of manufacturing the bottom cup 10 can be reduced.

Further, as shown in fig. 2, 9 and 10, the partition plate 114 includes a first partition plate 1141 vertically disposed with the air inlet end of the first ejector pipe 12, a second partition plate 1142 vertically disposed with the air inlet end of the second ejector pipe, and a first connecting partition plate 1143 connecting the first partition plate 1141 and the second partition plate 1142.

Specifically, when the second ejector pipe is provided with a plurality of, the second partition plate 1142 is correspondingly provided with a plurality of, and the first connecting partition plate 1143 is connected with the second partition plate 1142 corresponding to the second ejector pipe adjacent to the first ejector pipe 12.

If there are second ejection pipes arranged adjacently, the partition plate 114 may further include a second connecting partition plate 1144, and the second connecting partition plate 1144 connects two second partition plates 1142 corresponding to two adjacent second ejection pipes respectively.

In this embodiment, as shown in fig. 2, 9 and 10, a second partition 1142 is disposed outside the main ejector pipe 13, a second partition 1142 is disposed outside the boost ejector pipe 14, and a second connecting partition 1144 connects the two second partitions 1142; a first partition 1141 is arranged outside the first injection pipe 12, and a first connecting partition 1143 connects the first partition 1141 with a second partition 1142 outside the main injection pipe 13.

Thus, the structure of the partition plate 114 can be adapted to the arrangement of the respective injection pipes.

In this embodiment, as shown in fig. 2, 9 and 10, the first partition 1141 extends to the edge of the cup body 11, and/or the second partition 1142 outside the boost injection pipe 14 extends to the edge of the cup body 11. In this manner, the space below the cup body 11 can be divided into two parts by the partition plate 114 to form the supply areas of the primary air and the secondary air, respectively.

In this embodiment, as shown in fig. 2, 9 and 10, the first flow dividing plate 115 is disposed at a connection between the first connecting partition 1143 and the second partition 1142 outside the main ejector pipe 13, and the second flow dividing plate 116 is disposed at a connection between the second connecting partition 1144 and the second partition 1142 outside the main ejector pipe 13.

Further, as shown in fig. 2 to 10, the cup body 11 includes a bottom plate 11a having a central through hole 113, and a first annular protrusion 11b, a second annular protrusion 11c, and a third annular protrusion 11d provided on an upper surface of the bottom plate 11a and spaced apart from each other in the radial direction, the first annular air chamber 111 is formed between the first annular protrusion 11b and the second annular protrusion 11c, and the second annular air chamber 112 is formed between the second annular protrusion 11c and the third annular protrusion 11 d.

Specifically, as shown in fig. 2 to 10, the first annular protrusion 11b is an inner annular wall of the first annular air cavity 111; the second annular protrusion 11c is both an outer annular wall of the first annular air chamber 111 and an inner annular wall of the second annular air chamber 112; the third annular convex part 11d is the outer annular wall of the second annular air cavity 112; the portion of the bottom plate 11a located between the first annular projection 11b and the second annular projection 11c forms the bottom wall of the first annular air chamber 111, and the portion of the bottom plate 11a located between the second annular projection 11c and the third annular projection 11d forms the bottom wall of the second annular air chamber 112.

Specifically, as shown in fig. 2 to 10, the first injection pipe 12 and the second injection pipe are disposed at the bottom of the bottom plate 11 a.

In this way, the structure of the body of the bottom cup 10 can be simplified, so that the formation of the first and second ring air chambers 111 and 112 becomes simple.

Further, as shown in fig. 2 to 10, the cup body 11 further includes an annular inclined side plate 11e connected to a peripheral edge of the bottom plate 11a and extending downward. In this way, the overflowing soup can flow down the inclined side plate 11e to the panel without entering the inside of the burner 100.

In this embodiment, the first partition 1141 extends to the edge/periphery of the annular inclined side plate 11e, and the second partition 1142 outside the boost injection pipe 14 extends to the edge/periphery of the annular inclined side plate 11 e.

Specifically, the edge/periphery of the annular inclined side plate 11e is provided with a downward flanging.

Further, as shown in fig. 2 to 10, the main ejector pipe 13 includes a first straight pipe 131 having an air inlet, and a first arc-shaped pipe 132 connected to the first straight pipe 131, the first arc-shaped pipe 132 has an air outlet, and the first arc-shaped pipe 132 is communicated with the second annular air cavity 112.

Thus, the main injection pipe 13 can be conveniently communicated with the second annular air cavity 112 by enabling the main injection pipe 13 to comprise the first straight pipe 131 and the first arc-shaped pipe 132; moreover, through setting up first arc pipe 132, can make the mixed gas air current that gets into in second ring air cavity 112 through main ejector pipe 13 can be convenient for flow along circumference in second ring air cavity 112 under the guide effect of first arc pipe 132 to promote the mixed gas air current in second ring air cavity 112 uniformity in week.

Specifically, as shown in FIGS. 2-10, the first arced tube 132 is disposed below the first annular air chamber 111 and the second annular air chamber 112.

Further, as shown in fig. 2 to 10, the bottom wall of the second annular air cavity 112 is recessed downward at the communication position of the main ejector pipe 13 and the second annular air cavity 112 to form the first arc-shaped pipe 132.

Specifically, the bottom wall of the second annular air cavity 112 is recessed downward at the communication position of the main ejector pipe 13 and the second annular air cavity 112 to form a part of the lower pipe wall of the first arc-shaped pipe 132.

In other words, the bottom wall of the second annular air chamber 112 is missing from the connection between the first arc pipe 132 and the bottom wall of the second annular air chamber 112, so that the first arc pipe 132 is communicated with the second annular air chamber 112.

In this manner, processing of the first arced tube 132 may be facilitated.

Specifically, as shown in FIGS. 2-10, a bottom wall portion of the second annular chamber 112, which is located in the gas outlet direction of the first arced tube 132, is disposed obliquely downward.

Further, as shown in fig. 2 to 10, the pressure boost ejector pipe 14 includes a second straight pipe 141 having an air inlet, and a second arc-shaped pipe 142 connected to the second straight pipe 141, the second arc-shaped pipe 142 has an air outlet, and the second arc-shaped pipe 142 is communicated with the second annular air cavity 112.

Further, as shown in FIGS. 2-10, the overall direction of extension of the first arcuate tube 132 is the same as the overall direction of extension of the second arcuate tube 142. For example, if the first arced tube 132 extends clockwise, then the second arced tube 142 also extends clockwise; if the first arcuate tube 132 extends counterclockwise, then the second arcuate tube 142 also extends counterclockwise.

Thus, the guiding direction of the mixed gas flow entering the second annular air cavity 112 by the second arc-shaped pipe 142 can be the same as the guiding direction of the mixed gas flow entering the second annular air cavity 112 by the first arc-shaped pipe 132, so that the supercharging acceleration effect can be achieved.

Further, as shown in fig. 2-10, the booster ejector tube 14 is positioned below the second annular air chamber 112 to facilitate casting of the bottom cup 10.

Further, as shown in fig. 2 to 10, the bottom wall of the second annular air cavity 112 is disposed in a first gap (not shown) corresponding to the booster ejector pipe 14, and the booster ejector pipe 14 is disposed below the first gap.

As shown in fig. 2 to 10, a connecting surrounding wall connected to the periphery of the first notch is convexly provided on the outer surface of the pipe wall of the pressure-increasing injection pipe 14, and an arc-shaped groove (not shown) communicated with the first notch is formed between the connecting surrounding wall and the pipe wall of the pressure-increasing injection pipe 14.

The upper wall of the second arced tube 142 is provided with a second notch (not shown) that communicates with the arced slot to allow the second arced tube 142 to communicate with the second annular chamber 112.

In this manner, it is facilitated to direct the mixed gas stream into the second annular chamber 112 on the one hand and to cast the bottom cup 10 on the other hand.

Further, as shown in FIGS. 2-10, the upper wall of the second arced tube 142 is missing to form a second notch. Thus, the air intake area of the second arc pipe 142 communicating with the second annular chamber 112 can be increased, and the guide effect can be improved to improve the supercharging acceleration effect.

Further, as shown in fig. 2 to 10, the radian of the second annular air cavity 112 between the air outlet end of the main ejector pipe 13 and the air outlet end of the booster ejector pipe 14 is less than pi.

It can be understood that, in the air feeding direction of the main ejector pipe 13, the farther from the air outlet of the main ejector pipe 13, the smaller the flow velocity of the mixed gas airflow is, the radian of the second annular air cavity 112 between the air outlet end of the main ejector pipe 13 and the air outlet end of the booster ejector pipe 14 is made smaller than pi, so that the boosting acceleration effect of the booster ejector pipe 14 can be enhanced.

Specifically, the radian of the second annular air cavity 112 between the air outlet end of the main ejector pipe 13 and the air outlet end of the booster ejector pipe 14 is less than or equal to pi/2, and may be 2 pi/5, pi/3, 2 pi/7, pi/4, pi/5, pi/6, or the like.

So, can make the pressure boost draw the mixed gas air current that the pipe 14 sent into to draw the mixed gas air current that the pipe 13 sent into to the owner and play the pressure boost acceleration effect to can improve the homogeneity of the mixed gas air current distribution in the second ring air cavity 112, make the mixed gas air current distribution in the second ring air cavity 112 even or comparatively even, thereby can improve the homogeneity that the second ring flame that combustor 100 corresponds distributes in circumference, thereby still can increase the power of the second ring flame.

Specifically, as shown in FIGS. 2-10, a bottom wall portion of the second annular chamber 112, which is located in the gas outlet direction of the second arced tube 142, is disposed obliquely downward.

Further, as shown in fig. 2-10, the first straight pipe 131 and the second straight pipe 141 are disposed at an acute angle. Thus, the guiding and accelerating effect of the pressurizing ejector pipe 14 on the mixed gas flow sent into the second annular air cavity 112 can be improved. Furthermore, the effective length of the first booster ejector pipe 14 can be increased.

Further, as shown in fig. 2 to 10, the first ejector tube 12 includes a third straight tube 121 having an air inlet, and a third arc-shaped tube 122 connected to the third straight tube 121, the third arc-shaped tube 122 has an air outlet, and the third arc-shaped tube 122 is communicated with the first annular air cavity 111.

Thus, the first ejector pipe 12 can be conveniently communicated with the first annular air cavity 111 by enabling the first ejector pipe 12 to comprise the third straight pipe 121 and the third arc-shaped pipe 122; moreover, through the third arc-shaped pipe 122, the mixed gas flow entering the first annular air cavity 111 through the first ejector pipe 12 can flow in the first annular air cavity 111 along the circumferential direction under the guiding action of the third arc-shaped pipe 122, so that the uniformity of the mixed gas flow in the first annular air cavity 111 in the circumferential direction is improved.

Further, as shown in FIGS. 2-10, the overall extent of the third arcuate tube 122 is opposite to the overall extent of the first arcuate tube 132. So, can be convenient for increase the effective length of first ejector tube 12, the reinforcing is penetrated effect and water conservancy diversion effect.

Further, as shown in fig. 2-10, the first straight tube 131 is disposed at an acute angle with the third straight tube 121. Therefore, the guiding acceleration effect of the first injection pipe 12 on the mixed gas flow sent into the first annular air cavity 111 can be improved, and the uniformity of the mixed gas flow in the first annular air cavity 111 in the circumferential direction can be improved. Furthermore, the effective length of the first ejector pipe 12 can be increased.

Further, as shown in fig. 2 to 10, the first ejector tube 12 is disposed below the first annular air chamber 111 and the second annular air chamber 112.

Further, as shown in fig. 2 to 10, the bottom wall of the first annular air cavity 111 is disposed at a third gap (not shown) corresponding to the first ejector pipe 12, and the first ejector pipe 12 is disposed below the third gap; a connecting wall connected with the periphery of the third notch is convexly arranged on the outer surface of the pipe wall of the first injection pipe 12, and an arc-shaped groove (not shown) communicated with the third notch is formed between the connecting wall and the pipe wall of the first injection pipe 12 in a surrounding manner; the upper wall of the third arc-shaped pipe 122 is provided with a fourth gap (not shown) communicated with the arc-shaped groove, so that the third arc-shaped pipe 122 is communicated with the first annular air cavity 111.

In this way, on the one hand, it is possible to facilitate the introduction of the mixed gas flow into the first annular air chamber 111 and, on the other hand, the casting of the bottom cup 10.

Further, as shown in FIGS. 2-10, the upper wall of the third arced tube 122 is missing to form a fourth gap. Thus, the air intake area of the third arc tube 122 communicating with the first annular air chamber 111 can be increased.

Further, as shown in fig. 2 to 10, the main injection pipe 13 is located right below the central through hole 113.

So, be convenient for increase and mainly draw the effective length who penetrates pipe 13 to strengthen it and draw and penetrate the ability, prolong the mixing time and the route of gas and air, improve the mixing effect, thereby make the power of the second ring flame bigger, efficiency is higher.

Further, as shown in fig. 2 to 10, the first injection pipe 12 and the second injection pipe are located at the same height level.

In particular, the same height level can be understood as: the central line of the first injection pipe 12 and the central line of the second injection pipe are positioned on the same horizontal plane or are close to the same horizontal plane.

In this manner, the overall thick bottom of the base cup 10 may be advantageously reduced, thereby allowing the burner 100 to be thinner.

Further, the bottom cup 10 is integrally cast by a gravity casting process. As can be seen from the above description, the structure of the bottom cup 10 is relatively complex, and the bottom cup 10 can be integrally cast and formed by the gravity casting process, so that the difficulty in manufacturing the bottom cup 10 can be reduced, mass production can be realized, and the production cost can be reduced.

Further, as shown in fig. 1, 3-5, and 11-16, the first annular flame holes 22 are disposed inwardly and/or the second annular flame holes 24 are disposed outwardly.

In this embodiment, the first annular fire hole 22 is disposed inwardly. The first ring fire holes 22 are arranged inwards, that is, the gas outlets of the first ring fire holes 22 face the inner side of the first ring fire cavity 21 and include the inner side which faces the first ring fire cavity 21 in an upward inclined manner.

So, when the mixed gas air current in the first ring fire chamber 21 was spout from first ring fire hole 22, to the inboard injection of first ring fire chamber 21 to can make first ring flame be close to the center setting of fire lid 20 (can reduce the diameter of first ring flame), thereby can be convenient for improve the flame temperature of fire lid 20 center department, in other words, can be favorable to increasing the diameter of air through-hole 25.

In this embodiment, the second annular fire hole 24 is disposed outward. Wherein, the setting of second ring fire hole 24 outwards means, and the gas outlet of second ring fire hole 24 is towards the outside of second ring fire chamber 23, and includes the outside towards second ring fire chamber 23 upwards aslope.

So, when the mixed gas air current in the second ring fire chamber 23 spouts from second ring fire hole 24, spout to the outside of second ring fire chamber 23 to can increase the diameter of the second ring flame, thereby can be convenient for improve the flame temperature of fire lid 20 week side, in other words, can be favorable to reducing the diameter of second ring fire chamber 23, thereby can be favorable to reducing the diameter of fire lid 20, thereby is favorable to realizing miniaturized design.

Of course, in other embodiments, the first annular fire holes 22 may be disposed upward (i.e., the outlets of the first annular fire holes 22 are toward the upper side of the first annular fire chambers 21), and/or the second annular fire holes 24 may be disposed upward (i.e., the outlets of the second annular fire holes 24 are toward the upper side of the second annular fire chambers 23); such as the first ring fire hole 22 is disposed upward and the second ring fire hole 24 is disposed outward, or the first ring fire hole 22 is disposed inward and the second ring fire hole 24 is disposed upward, etc.

Further, as shown in fig. 1, 3-5, and 11-16, the first annular fire holes 22 are also disposed obliquely upward, so that the air outlets of the first annular fire holes 22 are obliquely upward toward the inner side of the first annular fire cavity 21; and/or the second annular fire holes 24 are also obliquely arranged upwards, so that the second annular fire holes 24 are obliquely upwards and towards the outer side of the second annular fire cavity 23.

In this embodiment, as shown in fig. 1, 3-5, and 11-16, the first annular flame holes 22 are further disposed to be inclined upward, so that the mixed gas flow in the first annular flame chamber 21 can be ejected obliquely upward toward the inner side of the first annular flame chamber 21 when ejected from the first annular flame holes 22.

As shown in fig. 1, 3-5, and 11-16, the second annular flame holes 24 are also arranged to be inclined upward, so that the mixed gas flow in the second annular flame chamber 23 can be ejected obliquely upward to the outside of the second annular flame chamber 23 when ejected from the second annular flame holes 24.

Further, as shown in fig. 1, 3-5, and 11-16, the fire cover 20 includes an annular top plate 26, a first annular side plate 27 disposed on an inner periphery of the annular top plate 26, and an annular protruding plate 28 protruding from a lower surface of the annular top plate 26, the first annular side plate 27 extends downward, a first annular fire chamber 21 is formed between the first annular side plate 27 and the annular protruding plate 28, and the first annular fire holes 22 are disposed in the first annular side plate 27. In this way, the formation of the first ring fire chamber 21 can be simplified, so that the structure of the fire cover 20 can be simplified.

Further, as shown in fig. 1, 3-5, and 11-16, the fire cover 20 further includes a second annular side plate 29 disposed on the outer periphery of the annular top plate 26, the second annular side plate 29 extends downward, a second annular fire chamber 23 is formed between the second annular side plate 29 and the annular convex plate 28, and the second fire holes 24 are disposed on the second annular side plate 29. In this way, the formation of the second ring fire chamber 23 can be simplified, so that the structure of the fire cover 20 can be simplified.

Further, as shown in fig. 1, 3-5, and 11-16, the first annular side plate 27 is disposed inwardly and downwardly, so that, on the one hand, the volume of the first annular fire chamber 21 can be increased, and, on the other hand, the first annular fire holes 22 can be disposed conveniently, so that the first annular fire holes 22 are disposed inwardly and upwardly obliquely.

Further, as shown in fig. 1, 3-5, and 11-16, the first annular flame holes 22 have an included angle a with the horizontal plane of less than or equal to 50 degrees. In this way, the mixed gas flow ejected from the first annular fire holes 22 can be injected to the center of the fire cover 20.

It will be appreciated that the above arrangement of the fire cover 20 makes the first ring of fire burn more fully and does not cause the first ring of fire holes 22 to be blocked. Moreover, the first ring fire holes 22 are arranged in an inward and upward inclined manner, so that the temperature distribution of the bottom of the pan is more uniform when the user sits on the pan, and the user experience is improved.

Specifically, the upper end periphery of the first annular side plate 27 is disposed close to the upper end periphery of the annular convex plate 28, so that the diameter or equivalent diameter of the air passing through hole 25 can be increased.

In this embodiment, the upper end of the annular flange 28 is also connected to the upper end of the first annular side plate 27.

Further, as shown in fig. 1, 3-5, and 11-16, the second annular side plate 29 is disposed outwardly and downwardly inclined, so that, on the one hand, the volume of the second annular combustion chamber 23 can be increased, and, on the other hand, the second annular combustion holes 24 can be conveniently disposed, so that the second annular combustion holes 24 are disposed outwardly and upwardly inclined.

Further, as shown in fig. 1, 3-5, and 11-16, the fire cover 20 further includes a first connecting ring protrusion 27a disposed on a lower peripheral edge of the first annular side plate 27 and extending downward, wherein the first connecting ring protrusion 27a is configured to be in sealing fit connection with an inner annular wall of the first annular air cavity 111 of the bottom cup 10; and/or the presence of a gas in the gas,

the fire cover 20 further includes a second coupling ring protrusion 29a provided at a lower peripheral edge of the second annular side plate 29 and extending downward, the second coupling ring protrusion 29a being adapted to be coupled with an outer peripheral wall of the second annular air chamber 112 of the base cup 10 in a sealing engagement manner.

In the present embodiment, the inner annular wall of the first annular air cavity 111 of the bottom cup 10 is a first annular protrusion 11b, and the outer annular wall of the second annular air cavity 112 of the bottom cup 10 is a third annular protrusion 11 d.

In particular embodiments, one may: a limiting ring projection 27b is arranged on the outer ring surface of the joint of the first annular side plate 27 and the first connecting ring projection 27a, so that a first accommodating step 27c is formed on the outer side of the first connecting ring projection 27 a; alternatively, one may: the thickness of the first coupling ring projection 27a is smaller than that of the first annular side plate 27 to form a first receiving step 27c at the inner side or the outer side of the first coupling ring projection 27 a. In this embodiment, the first receiving step 27c is formed at the outer side of the first connection ring protrusion 27 a.

In particular embodiments, one may: the second coupling ring protrusion 29a has a thickness smaller than that of the second annular side plate 29 to form a second receiving step 29b at the inner or outer side of the second coupling ring protrusion 29 a. In this embodiment, the second receiving step 29b is formed at an outer side of the second coupling ring protrusion 29 a.

Specifically, the lower end of the first connecting ring projection 27a protrudes downward, so that the first connecting ring projection 27a also has a guiding installation function.

In the present embodiment, the upper end of the third annular projection 11d protrudes upward (i.e., the upper end of the third annular projection 11d protrudes upward beyond the upper ends of the other annular projections).

Specifically, in the present embodiment, when the burner 100 is assembled, the fire cover 20 and the base cup 10 are brought close to each other (e.g., the fire cover 20 is disposed above the base cup 10, and the fire cover 20 is moved downward), since the first connecting ring projection 27a projects downward, the first connecting ring projection 27a is first assembled with the first annular projection 11b, that is, the first connecting ring projection 27a is inserted into the inner side of the first annular projection 11b (i.e., the central through hole 113), so that the first annular projection 11b is caught at the first receiving step 27 c; since the fire cover 20 and the bottom cup 10 are both integrally formed, when the first connecting ring protrusion 27a and the first annular protrusion 11b are mutually limited, the assembly of the fire cover 20 and the bottom cup 10 can be guided. Then, when the fire cover 20 and the base cup 10 continue to approach each other, the second connecting ring protrusion 29a is inserted into the inner side of the third annular protrusion 11d, so that the third annular protrusion 11d is limited at the second receiving step 29 b; in this process, the lower end of the annular convex plate 28 abuts against the upper end of the second annular convex portion 11c, so that the first annular air chamber 111 is communicated with the first annular combustion chamber 21 to form a first annular mixing chamber, and the second annular air chamber 112 is communicated with the second annular combustion chamber 23 to form a second annular mixing chamber.

After the assembly is completed, the first annular protrusion 11b is limited in the first receiving step 27c, the upper end of the second annular protrusion 11c abuts against the lower end of the annular protrusion 28, and the third annular protrusion 11d is limited in the second receiving step 29 b.

Thus, by arranging the first accommodating step 27c and limiting the first annular protrusion 11b on the first accommodating step 27c, not only can the assembly stability be improved, but also the sealing performance of the connection between the first annular protrusion 11b and the first connecting ring protrusion 27a can be improved to prevent air leakage; moreover, by providing the second receiving step 29b and limiting the third annular protrusion 11d to the second receiving step 29b, not only the assembling stability can be improved, but also the sealing property of the connection between the third annular protrusion 11d and the second connecting ring protrusion 29a can be improved to prevent air leakage. Further, it can be understood that since the joint between the annular projecting plate 28 and the second annular projecting portion 11c is located between the first annular mixing chamber and the second annular mixing chamber, the sealing property at the joint between the annular projecting plate 28 and the second annular projecting portion 11c is not required, and therefore, the lower end of the annular projecting plate 28 may be brought into contact with the upper end of the second annular projecting portion 11c, whereby the structure of the fire lid 20 and the base cup 10 can be simplified.

Of course, in other embodiments, the first receiving step 27c or the second receiving step 29b may not be provided, for example, only the first connecting ring protrusion 27a may be inserted into the inner side of the first connecting ring protrusion 27a, or only the second connecting ring protrusion 29a may be inserted into the inner side of the third annular protrusion 11 d; alternatively, the first accommodation step 27c is provided on the first annular projection 11b, and/or the second accommodation step 29b is provided on the third annular projection 11 d; and so on.

Further, as shown in fig. 1, 3-5, and 11-16, the fire cover 20 further includes a connecting plate 60 disposed in the first connecting ring protrusion 27a, two ends of the connecting plate 60 are respectively connected to an inner annular surface of the first connecting ring protrusion 27a, and the connecting plate 60 is disposed above the main injection pipe 13 of the bottom cup 10. Specifically, the width of the connecting plate 60 is wider than the width of the main injection pipe 13.

So, through setting up connecting plate 60, can strengthen the structural strength of fire lid 20 on the one hand to strengthen it, on the other hand still can inject tub 13 to leading and protect, spill to the hot water juice that prevents to overflow and penetrate tub 13 to leading and to penetrate the gas temperature rise in the pipe 13 that makes leading. In addition, the connecting plate 60 can hide the main injection pipe 13, so that the aesthetic property of the burner 100 can be improved.

Specifically, the connecting plate 60 is an arc-shaped plate, or two side edges of the connecting plate 60 extend in a downward bending manner.

Further, as shown in fig. 1, 3-5, and 11-16, an annular flame stabilizing groove 271 is formed on the inner annular surface of the first annular side plate 27, and a third annular flame hole 272 communicated with the first annular flame chamber 21 is formed on the lower side wall of the annular flame stabilizing groove 271. Specifically, a plurality of the third annular flame holes 272 are annularly distributed in the circumferential direction of the annular flame holding groove 271. Thus, the stability of the first ring flame combustion can be improved.

Specifically, the annular flame holding groove 271 is disposed below the air outlet of the first annular flame hole 22.

Further, as shown in fig. 1, 3-5, and 11-16, the third annular flame holes 272 extend in the up-down direction. Therefore, on one hand, the mixed gas flow sprayed from the third annular flame hole 272 can be conveniently mixed in the annular flame stabilizing groove 271 and then flows out; on the other hand, the structure of the fire cover 20 can be simplified, and the production difficulty can be reduced.

Further, as shown in fig. 1, 3-5, and 11-16, an air inlet ring groove 273 is formed on the outer circumferential surface of the first annular side plate 27, an upper side groove wall of the air inlet ring groove 273 is formed to correspond to a lower side groove wall of the annular flame stabilizing groove 271, and an air inlet of the third annular flame holes 272 is formed in the upper side groove wall of the air inlet ring groove 273. It should be noted that the outer annular surface of the first annular side plate 27 is used to form a side annular wall surface of the first annular combustion chamber 21.

Thus, by providing the inlet ring groove 273, the amount of gas flowing into the third ring fire holes 272 can be increased.

Further, as shown in FIGS. 1, 3-5, and 11-16, the bottom wall of the intake ring groove 273 is connected to the outer circumferential surface of the first annular side plate 27. That is, the upper groove wall of the air inlet ring groove 273 and the bottom wall of the groove surround to form the air inlet ring groove 273.

This needs to be proposed very much, the utility model discloses in, because fire lid 20 is the integrated into one piece structure with end cup 10 to reducible corresponding assembly process, thereby can make things convenient for batch production, save processing manpower and materials. Moreover, through the structural arrangement, the temperature uniformity of the first ring flame and the second ring flame can be improved.

In a further embodiment of the fire cover 20 of the present invention, the fire cover 20 is further modified based on the structure of the fire cover 20, which will be described in detail below.

Further, as shown in fig. 1, 3-5, and 11-16, the fire cover 20 further has a fire dividing hole 50, and the fire dividing hole 50 communicates the air through hole 25 and the second annular fire chamber 23; or, the gas inlet of the fire diversion hole 50 is communicated with the first annular fire cavity 21, and the gas outlet of the fire diversion hole 50 is arranged on the outer annular wall or the top annular wall of the second annular fire cavity 23, so that the fire diversion hole 50 is communicated with the space outside or above the first annular fire cavity 21 and the second annular fire cavity 23.

Wherein, a plurality of the fire distribution holes 50 are annularly distributed on the circumference of the fire cover 20.

Wherein, when reposition of redundant personnel fire hole 50 intercommunication air through hole 25 and the second ring fire chamber 23, the air inlet and the second ring fire chamber 23 intercommunication of reposition of redundant personnel fire hole 50, the inner ring wall of first ring fire chamber 21 is located to the gas outlet of reposition of redundant personnel fire hole 50.

It can be understood that the utility model discloses in, the air feed gas circuit that first ring mixing chamber and second ring mixing chamber correspond respectively is relatively independent.

For the scheme that the flow dividing fire hole 50 is communicated with the gas passing through hole 25 and the second annular fire cavity 23, the fire cover 20 is provided with the flow dividing fire hole 50, and the flow dividing fire hole 50 is communicated with the gas passing through hole 25 and the second annular fire cavity 23, so that the mixed gas in the second annular fire cavity 23 flows to the inner side of the first annular fire cavity 21 through the flow dividing fire hole 50 to form first annular flame, and the combustion temperature of the inner annular flame (namely the first annular flame) is favorably improved; especially when the gas supply power of the injection pipe that the second ring fires 23 corresponds is too big, can make the partial mixed gas in the second ring fires 23 and shunt to the inboard in first ring fires chamber 21 through reposition of redundant personnel fire hole 50 to be favorable to the promotion of whole combustor 100 power and efficiency, but also can improve the homogeneity of the temperature of first ring flame and second ring flame.

For the scheme that the air inlets of the fire diversion holes 50 are communicated with the first annular fire chambers 21, and the air outlets of the fire diversion holes 50 are arranged on the outer annular wall or the top annular wall of the second annular fire chambers 23, the mixed gas airflow in the first annular fire chambers 21 can flow to the outer side or the upper side of the second annular fire chambers 23 through the fire diversion holes 50 in a diversion mode to form second annular flames, so that the combustion temperature of the outer annular flames (namely the second annular flames) can be improved; especially when the gas supply power of the injection pipe that first ring fires chamber 21 and corresponds is too big, can make the partial mixed gas in first ring fires chamber 21 shunt to the outside or the top of second ring fires chamber 23 through reposition of redundant personnel fire hole 50 to be favorable to the promotion of whole combustor 100 power and efficiency, but also can improve the homogeneity of the temperature of first ring flame and second ring flame.

Further, as shown in fig. 1, 3-5, and 11-16, the fire diversion holes 50 are arranged obliquely. Thus, the gas through hole 25 and the second annular combustion chamber 23 can be conveniently communicated with the flow dividing fire hole 50; alternatively, it may be convenient to make the branch fire holes 50 communicate with the space outside or above the first ring fire chamber 21 and the second ring fire chamber 23. Of course, in other embodiments, the fire dividing holes 50 may be horizontally disposed, or the fire dividing holes 50 may be curved and extended, etc.

As for the scheme that the divided fire holes 50 communicate the air through holes 25 and the second annular fire chambers 23, specifically, as shown in fig. 1, 3-5, and 11-16, the air inlets of the divided fire holes 50 are disposed on the outer annular surface of the annular convex plate 28, and the air outlets of the divided fire holes 50 are disposed on the inner annular surface of the first annular side plate 27. In this way, the fire diversion holes 50 can be buried in the annular flange 28 and the first annular side plate 27 to simplify the structure of the fire cover 20.

For the scheme that the gas through hole 25 and the second annular fire cavity 23 are communicated by the branch fire hole 50, specifically, as shown in fig. 1, 3-5 and 11-16, the gas outlet of the branch fire hole 50 is arranged above the gas outlet of the first annular fire hole 22. In this way, interference between the formation of the branch fire holes 50 and the formation of the first ring fire holes 22 can be avoided, thereby simplifying the structure of the fire cover 20.

For the scheme that the branch fire holes 50 communicate the space outside or above the first annular fire chamber 21 and the second annular fire chamber 23, specifically, the air inlets of the branch fire holes 50 may be disposed on the inner annular surface of the annular convex plate 28, and the air outlets of the branch fire holes 50 may be disposed on the upper surface of the annular top plate 26 or the outer annular surface of the second annular side plate 29. Alternatively, the divided fire holes 50 may be formed through the second annular fire chamber 23 to realize that "the inlet of the divided fire holes 50 is formed on the inner annular surface of the annular convex plate 28, and the outlet of the divided fire holes 50 is formed on the upper surface of the annular top plate 26 or the outer annular surface of the second annular side plate 29".

Optionally, a flow switch (not shown) is further disposed in the branch fire hole 50, the flow switch and the inner wall of the branch fire hole 50 form a ventilation gap, and the flow switch is configured to adjust the size of the ventilation gap (according to the air pressure of the first annular fire cavity 21 or the air pressure of the second annular fire cavity 23). Optionally, the flow switch includes a spring plate, and when the air pressure of the first annular combustion chamber 21 or the air pressure of the second annular combustion chamber 23 increases, the spring plate can be pushed open to increase the air gap; when the air pressure of the first ring fire cavity 21 or the air pressure of the second ring fire cavity 23 is reduced, the elastic sheet is reset to reduce the ventilation gap.

The structure of the nozzle mount 40 will be described further below.

Further, as shown in fig. 2, 3, and 17-20, the nozzle base 40 includes:

a mounting substrate 41; and

and the supporting column 42 is arranged on the surface of the mounting substrate 41 in a protruding mode, and the supporting column 42 is used for mounting the nozzle 30.

Specifically, as shown in fig. 2, 3, and 17-20, the mounting substrate 41 is configured to be mounted on the bottom cup 10, or the mounting substrate 41 is configured to be mounted on a panel, so that the nozzles 30 mounted on the supporting columns 42 are arranged corresponding to the corresponding injection pipes.

Specifically, the support columns 42 are provided with a plurality of support columns, each support column 42 is provided with one nozzle 30, each injection pipe of the bottom cup 10 is provided with one nozzle 30 correspondingly, and the nozzles 30 are arranged corresponding to air inlets of the injection pipes. In this embodiment, the number of the support columns 42 is three, and the number of the nozzles 30 is three, so as to respectively correspond to the first injection pipe 12, the main injection pipe 13 and the pressurizing injection pipe 14.

Further, be equipped with gas pipe pilot hole 411 on mounting substrate 41, support column 42 corresponds gas pipe pilot hole 411 sets up, just support column 42 have with the gas pipe assembly passageway 421 of gas pipe pilot hole 411 intercommunication and with the nozzle mounting hole 422 of gas pipe assembly passageway 421 intercommunication, the mounting hole is used for installing nozzle 30.

Specifically, the gas pipe extends from below the mounting substrate 41 through the gas pipe fitting hole 411 into the gas pipe fitting passage 421, and is connected to the nozzle 30.

The utility model discloses in, nozzle base 40's simple structure, production are convenient, and the batch production of being convenient for, low in production cost.

Moreover, through set up gas pipe pilot hole 411 on mounting substrate 41 to set up the gas pipe assembly passageway 421 with gas pipe pilot hole 411 intercommunication on support column 42, make the gas pipe can stretch into in the gas pipe assembly passageway 421 and be connected with nozzle 30 from mounting substrate 41's below, thereby can fix the gas pipe, thereby can improve the installation stability of gas pipe, thereby can improve the stability that gas pipe and nozzle 30 are connected, in order to improve combustor 100's stability in use.

Further, as shown in fig. 2, 3, and 17-20, the nozzle base 40 further includes an abutting protrusion 412 protruding from the surface of the mounting substrate 41, and the abutting protrusion 412 is configured to abut against the partition plate 114 at the bottom of the bottom cup 10 of the burner 100 to form a partition wall semi-surrounding the supporting pillar 42.

Specifically, the abutting convex part 412 is provided near the edge of the mounting substrate 41, or the abutting convex part 412 is provided at the edge of the mounting substrate 41.

In this way, by providing the abutting convex portion 412 on the surface of the mounting board 41 so as to abut against the partition plate 114 at the bottom of the bottom cup 10, the abutting convex portion 412 and the partition plate 114 can form a partition wall that semi-surrounds the support column 42, and the space below the cup body 11 can be further divided into two parts by the partition wall to form the supply regions of the primary air and the secondary air, respectively. Further, by providing the abutting convex portion 412, the structural strength of the mounting substrate 41 can be enhanced.

Of course, in other embodiments, the partition plate 114 at the bottom of the bottom cup 10 may be directly abutted against the surface of the mounting substrate 41 without providing the abutting portion 412.

Further, as shown in fig. 2, 3, and 17-20, the nozzle base 40 further includes an air splitter plate (not shown) protruding from the surface of the mounting substrate 41, and an air splitter plate is disposed between each two adjacent supporting pillars 42. Wherein the air splitter plate extends in the air injection direction of the nozzle 30.

Specifically, the air splitter plate is arranged between air inlets of two adjacent injection pipes. So, can separate the air that gets into two adjacent pipes of penetrating through the air flow distribution plate to can avoid getting into two adjacent one-time air of penetrating the pipe and appear robbing gas phenomenon.

In this embodiment, there are two air distribution plates, one of which is disposed between the air inlets of the first injection pipe 12 and the main injection pipe 13, and the other is disposed between the air inlets of the pressure boost injection pipe 14 and the main injection pipe 13.

Further, as shown in fig. 2, 3, and 17-20, the air splitter plate is disposed on the air outlet side of the support column 42. The air inlet side of the support column 42 refers to the air outlet side of the nozzle 30.

In this way, the air splitter plate can be prevented from affecting the suction action of the gas ejected from the nozzle 30 on the air on the peripheral side.

Of course, in other embodiments, the diverter plate may extend between the two support posts 42, and so on.

Further, as shown in fig. 2, 3, and 17-20, the mounting substrate 41, the supporting posts 42 and the air splitter plate are integrally formed. In this manner, assembly may be avoided, and the installation process of the burner 100 may be simplified.

Of course, in other embodiments, only the mounting substrate 41 and the supporting column 42 may be integrally formed, and the air splitter plate may be separately mounted (e.g., detachably mounted) on the mounting substrate 41; alternatively, only the mounting substrate 41 and the air distribution plate are integrally formed, and the supporting posts 42 are separately mounted (e.g., detachably mounted) on the mounting substrate 41; alternatively, the air splitter plate and the support posts 42 are both separately mounted (e.g., detachably mounted) to the mounting substrate 41; and so on. To reduce the difficulty of manufacturing the nozzle base 40.

Further, as shown in fig. 2, 3, and 17-20, the mounting hole is disposed on a side surface of the supporting pillar 42, the supporting pillar 42 has a windward side surface 424 opposite to the side surface where the mounting hole is located, and the windward side surface 424 is an arc-shaped surface.

In this way, by providing the windward side surface 424 as an arc (pillar) surface, the wind resistance when the air passes through the support pillar 42 can be reduced, and the influence of the support pillar 42 on the air suction action of the gas ejected from the nozzle 30 on the peripheral side can be reduced.

Specifically, the windward side surface 424 is a circular arc surface. Thus, the production difficulty can be reduced by arranging the windward side surface 424 as an arc surface.

Further, as shown in fig. 2, 3, and 17-20, the support post 42 also has an avoidance cut 423 that chamfers the top of the support post 42 for avoiding the annular sloping side plate 11e of the bottom cup 10 of the burner 100. The avoiding tangent plane 423 is disposed on the windward side of the supporting column 42.

Specifically, the nozzle base 40 is disposed at the bottom of the bottom cup 10, and the supporting column 42 is disposed corresponding to the annular inclined side plate 11e of the bottom cup 10, and if the supporting column 42 is too high, the supporting column 42 is easily interfered with the annular inclined side plate 11e during assembly. On the other hand, by arranging the avoiding tangent plane 423 on the top of the supporting column 42, on one hand, the overall height of the supporting column 42 does not need to be reduced, so as to avoid influencing the installation height of the nozzle 30; on the other hand, the support column 42 is prevented from interfering with the annular inclined side plate 11e at the time of assembly.

Specifically, the avoiding tangent plane 423 is an inclined plane, so as to reduce the production difficulty of the supporting column 42; of course, the avoidance line 423 can also be provided as an arc line.

Specifically, the positions of the escape cut surfaces 423 are different for different support columns 42 so as to be adapted to the lower surface of the annular inclined side plate 11 e.

Further, as shown in fig. 2, 3, and 17-20, the support posts 42 are arranged in a flat (post) shape.

In this manner, it is possible to facilitate formation of the nozzle mounting hole 422 and increase the hole length of the nozzle mounting hole 422, so as to improve the mounting stability of the nozzle 30.

Further, as shown in fig. 2, 3, and 17 to 20, the mounting substrate 41 is a sector plate. In this manner, the nozzle mount 40 can be easily hidden under the base cup 10 to facilitate a compact design of the burner 100.

In the present embodiment, as shown in fig. 2, 3, and 17-20, three support columns 42 are arranged in a row, and the center lines of the mounting holes of the support columns 42 at the two sides and the center line of the mounting hole of the support column 42 at the middle are arranged at an acute angle. In other words, the center line of the mounting hole of the support pillar 42 provided corresponding to the first ejector pipe 12 is disposed at an acute angle to the center line of the mounting hole of the support pillar 42 corresponding to the main ejector pipe 13, and the center line of the mounting hole of the support pillar 42 provided corresponding to the supercharging ejector pipe 14 is disposed at an acute angle to the center line of the mounting hole of the support pillar 42 corresponding to the main ejector pipe 13.

Thus, the nozzle 30 can be conveniently arranged right opposite to the air inlet of the corresponding injection pipe, so that the suction effect on primary air is improved.

For the flat (column) shaped support columns 42, the support columns 42 at both sides and the support column 42 at the middle may be arranged at an acute angle, so that the center lines of the mounting holes of the support columns 42 at both sides and the center line of the mounting hole of the support column 42 at the middle are arranged at an acute angle.

In another embodiment of the burner of the present invention, the fire cover further has a third ring fire chamber located outside the second ring fire chamber, and accordingly, the cup body further has a third ring air chamber located outside the second ring air chamber, the bottom cup further includes a third ejector tube located at the bottom of the cup body and communicated with the third ring air chamber, and the third ring fire chamber is communicated with the third ring air chamber to form a third ring mixing chamber. In this embodiment, optionally, the outer annular wall of the second annular combustion chamber is spaced from the inner annular wall of the third annular combustion chamber, and the outer annular wall of the second annular combustion chamber is spaced from the inner annular wall of the third annular combustion chamber.

The invention further provides a gas stove, which comprises a burner, the specific structure of the burner refers to the above embodiments, and the gas stove of the invention adopts all the technical schemes of all the above embodiments, so that the gas stove at least has all the beneficial effects brought by the technical schemes of the above embodiments, and the details are not repeated.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (15)

1. A base cup for a burner, the base cup comprising:

the cup comprises a cup body, a first sealing ring and a second sealing ring, wherein the cup body is provided with a first ring air cavity and a second ring air cavity arranged outside the first ring air cavity; and

the first ejector pipe and the second ejector pipe are connected to the bottom of the cup body in a uniform mode, the air outlet of the first ejector pipe is communicated with the first annular air cavity, and the air outlet of the second ejector pipe is communicated with the second annular air cavity;

the bottom cup is used for being matched and connected with the fire cover, so that the first ring air cavity is used for being communicated with the first ring fire cavity of the fire cover, and the second ring air cavity is used for being communicated with the second ring fire cavity of the fire cover.

2. The base cup of claim 1, wherein the air inlet of the first eductor tube and the air inlet of the second eductor tube are both located on the same side of the cup body.

3. The bottom cup as claimed in claim 2, wherein the cup body further has a central through hole formed in the inner side of the first annular air cavity, a partition plate is arranged at the bottom of the cup body on one side of the first injection pipe where the air inlet and the second injection pipe are located, and the air inlet of the first injection pipe and the air inlet of the second injection pipe are both arranged on one side of the partition plate away from the central through hole.

4. The bottom cup as claimed in claim 3, wherein a first flow dividing plate is protruded from a side surface of the partition plate away from the central through hole, and the first flow dividing plate is disposed between the air inlet of the first injection pipe and the air inlet of the second injection pipe.

5. The bottom cup as claimed in claim 3, wherein the air inlet of the first ejector tube is provided on a side surface of the partition plate away from the central through hole, and/or the air inlet of the second ejector tube is provided on a side surface of the partition plate away from the central through hole.

6. The bottom cup as claimed in claim 3, wherein the partition plate comprises a first partition plate disposed perpendicular to the gas inlet end of the first injection pipe, a second partition plate disposed perpendicular to the gas inlet end of the second injection pipe, and a first connection partition plate connecting the first partition plate and the second partition plate.

7. The bottom cup as claimed in claim 2, wherein the second injection pipe comprises a main injection pipe and a pressure-boosting injection pipe, the main injection pipe is arranged below the central through hole of the cup body, the pressure-boosting injection pipe is arranged on one side of the main injection pipe, and the first injection pipe is arranged on the other side of the main injection pipe.

8. The base cup as claimed in claim 7, wherein said main ejector tube comprises a first straight tube having an air inlet, and a first arc-shaped tube connected to said first straight tube, said first arc-shaped tube communicating with said second annular chamber.

9. The bottom cup of claim 8, wherein the bottom wall of the second annular chamber is recessed at a communication location of the main ejector tube and the second annular chamber to form the first arc-shaped tube.

10. The bottom cup as claimed in claim 8, wherein said pressurized injecting tube comprises a second straight tube having an air inlet, and a second arc-shaped tube connected to said second straight tube, said second arc-shaped tube being in communication with said second annular chamber, and the overall extension direction of said second arc-shaped tube being the same as the overall extension direction of said first arc-shaped tube; and/or the presence of a gas in the gas,

the first injection pipe comprises a third straight pipe with an air inlet and a third arc-shaped pipe connected with the third straight pipe, the third arc-shaped pipe is communicated with the first annular air cavity, and the overall extending direction of the third arc-shaped pipe is opposite to that of the first arc-shaped pipe.

11. The bottom cup as claimed in claim 7, wherein said main ejector tube is located directly below said central through hole; and/or the presence of a gas in the gas,

the cross section area of the main injection pipe is larger than that of the pressurizing injection pipe.

12. The base cup as claimed in any one of claims 1 to 11, wherein said base cup is integrally cast by gravity casting.

13. The base cup according to any one of claims 1 to 11, wherein the cup body includes a bottom plate having a central through hole, and a first annular protrusion, a second annular protrusion, and a third annular protrusion provided on an upper surface of the bottom plate and spaced apart from each other in the radial direction from the inside to the outside, the first annular chamber being formed between the first annular protrusion and the second annular protrusion, and the second annular chamber being formed between the second annular protrusion and the third annular protrusion.

14. A burner comprising a base cup as claimed in any one of claims 1 to 13.

15. Hob, characterized in, that it comprises a burner as claimed in claim 14.

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