CN109000254B

CN109000254B - Gas-distributing disc structure, burner and gas stove

Info

Publication number: CN109000254B
Application number: CN201811027487.7A
Authority: CN
Inventors: 林梦; 吴宸萱; 孙明雪
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2018-09-04
Filing date: 2018-09-04
Publication date: 2023-09-08
Anticipated expiration: 2038-09-04
Also published as: CN109000254A

Abstract

The application discloses a gas distribution plate structure, a burner and a gas cooker. In this way, in the gas distribution disc structure, the burner and the gas cooker of the embodiment of the application, when gas enters the gas chamber through the gas outlet end of the injection pipe, the outer side of the gas outlet end of the injection pipe is in cambered surface transitional connection with the bottom surface of the gas chamber, so that the flow loss of the gas when entering the gas chamber can be reduced, and the heat load of the burner can be further improved.

Description

Gas-distributing disc structure, burner and gas stove

Technical Field

The application relates to the technical field of cooking appliances, in particular to a gas distribution plate structure, a burner and a gas cooker.

Background

The related art burner employs a gas distribution plate to form a flame ring, however, there may be a certain gas flow loss of the existing burner when the gas enters the gas distribution plate.

Disclosure of Invention

The application provides a gas distribution plate structure, a burner and a gas cooker.

The gas distribution plate structure of the embodiment of the application is used for the burner of the embodiment of the application, and comprises:

the gas distribution plate comprises a cavity part and an injection pipe protruding from the bottom of the cavity part, the cavity part is provided with a gas chamber, the injection pipe comprises a gas outlet end positioned in the gas chamber, and the outer side of the gas outlet end is connected with the bottom surface of the gas chamber through an arc surface.

In the gas separation disc structure, when gas enters the gas chamber through the gas outlet end of the injection pipe, the outer side of the gas outlet end of the injection pipe is in cambered surface transitional connection with the bottom surface of the gas chamber, so that the flow loss of the gas when entering the gas chamber can be reduced, and the heat load of the burner is further improved.

In some embodiments, the injection pipe is provided with an injection channel in a tapered shape from bottom to top, the injection channel comprises a first injection channel and a second injection channel which are sequentially connected from bottom to top, and the slope of the inner side surface of the first injection channel is smaller than that of the inner side surface of the second injection channel.

In some embodiments, the gas distribution disc structure comprises a bearing disc for bearing the gas distribution disc, a connecting part is arranged at the bottom of the cavity part, the bearing disc and the gas distribution disc are of a split structure, and the gas distribution disc is connected with the bearing disc through the connecting part.

In some embodiments, the number of the connecting parts is a plurality, the plurality of connecting parts are arranged at intervals along the circumferential direction of the gas distribution plate, each connecting part comprises a supporting block and a connecting block, the supporting blocks are connected with the connecting blocks and the cavity parts, the bearing plate is provided with a plurality of connecting holes, the connecting blocks penetrate through the connecting holes and are connected with the bearing plate, and the supporting blocks are supported on the upper surface of the bearing plate.

In some embodiments, the gas distribution plate and the connecting portion are of unitary construction.

In some embodiments, the planar shapes of the gas distribution plate and the bearing plate are basically circular, and the orthographic projection of the gas distribution plate on the bearing plate is located within the range defined by the bearing plate.

In some embodiments, the ejector pipe penetrates through the bearing disc, the ejector pipe is communicated with the gas chamber, and the cavity and the bearing disc are arranged at intervals and are provided with secondary air channels.

In certain embodiments, the gas separation tray includes a partition that separates the gas chamber into two sub-gas chambers that communicate with the ejector tube.

The burner of the embodiment of the application comprises a bottom cup and the air dividing disc structure of any embodiment, wherein the bottom cup is provided with a primary air cavity, the injection pipe at least partially stretches into the primary air cavity, and the air dividing disc structure and the bottom cup are arranged at intervals and form a primary air channel communicated with the primary air cavity.

In the burner, when the fuel gas enters the fuel gas chamber through the air outlet end of the injection pipe, the outer side of the air outlet end of the injection pipe is in cambered surface transitional connection with the bottom surface of the fuel gas chamber, so that the flow loss of the fuel gas when entering the fuel gas chamber can be reduced, and the heat load of the burner is further improved.

The gas cooker of the embodiment of the application comprises the burner of the embodiment.

In the gas cooker, when gas enters the gas chamber through the gas outlet end of the injection pipe, the outer side of the gas outlet end of the injection pipe is in cambered surface transitional connection with the bottom surface of the gas chamber, so that the flow loss of the gas when entering the gas chamber can be reduced, and the heat load of the burner is further improved.

Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic perspective view of a burner according to an embodiment of the present application;

FIG. 2 is an exploded perspective view of a burner according to an embodiment of the present application;

FIG. 3 is a side view of a burner according to an embodiment of the present application;

FIG. 4 is a perspective view of a bottom cup of a burner according to an embodiment of the present application;

FIG. 5 is a top view of a bottom cup of a burner of an embodiment of the present application;

FIG. 6 is a bottom view of the bottom cup of the burner of the embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of the bottom cup of FIG. 6 taken along line VII-VII;

FIG. 8 is a schematic perspective view of a first gas distribution plate structure of a burner according to an embodiment of the present application;

FIG. 9 is an exploded perspective view of a first gas distribution plate structure of a burner according to an embodiment of the present application;

FIG. 10 is a top view of a first gas distribution plate structure of a burner of an embodiment of the present application;

FIG. 11 is a schematic cross-sectional view of the first gas distribution plate structure of FIG. 10 taken along line XI-XI;

FIG. 12 is a schematic perspective view of a second gas distribution plate structure of a burner according to an embodiment of the present application;

FIG. 13 is a side view of a second gas distribution plate structure of a burner of an embodiment of the present application;

FIG. 14 is a schematic cross-sectional view of the second air distribution disk structure of FIG. 13 taken along line XIV-XIV;

FIG. 15 is a side view of an outer fire cover of a burner of an embodiment of the application;

FIG. 16 is an enlarged schematic view of the outer fire cover of FIG. 15 at XVI;

FIG. 17 is a perspective view of an outer fire cover of a burner in accordance with an embodiment of the present application;

FIG. 18 is an enlarged schematic view of the outer fire cover of FIG. 17 at XIIX;

FIG. 19 is a top view of a burner according to an embodiment of the present application;

FIG. 20 is a schematic cross-sectional view of the combustor taken along line XIX-XIX in FIG. 19;

FIG. 21 is a schematic cross-sectional view of the combustor taken along line XX-XX in FIG. 19;

FIG. 22 is a schematic cross-sectional view of the combustor of FIG. 19 taken along line XXI-XXI.

Description of main reference numerals:

a burner 100, a primary air passage 101, a secondary air passage 102;

the bottom cup 10, the primary air chamber 11, the first air intake pipe 12, the first air intake passage 121, the first air intake 1211, the first nozzle hole 122, the second air intake pipe 13, the second air intake passage 131, the second nozzle hole 132, the third air intake pipe 14, the third air intake passage 141, the second air intake 1411, the third nozzle hole 142, the positioning member 15, the positioning hole 151, the flange 16, the first support block 17, the first mounting hole 18, the second mounting hole 19, the first connection hole 110, the limit structure 111;

the gas distribution plate structure 20, the first gas distribution plate structure 21, the carrier plate 211, the second connection hole 2111, the first through hole 2112, the second through hole 2113, the third installation hole 2114, the fourth installation hole 2115, the gas distribution plate 212, the first cavity portion 2121, the first gas chamber 21211, the first square through hole 21212, the boss 21213, the partition 21214, the first injection pipe 2122, the gas outlet end 21221, the arc surface 21222, the injection passage 21223, the first injection passage 21224, the second injection passage 21225, the connection portion 213, the second support block 2131, the connection block 2132, the second gas distribution plate structure 22, the second injection pipe 221, the third injection pipe 222, the second cavity portion 223, the second gas chamber 2231, the support portion 2232, the guide portion 22321, the bearing portion 22, the boss 2233, the third cavity portion 224, the third gas chamber 2241, and the first flame transfer hole 225;

fire cover 30, fire hole 301, outer fire cover 31, top surface 311, side surface 312, flame stabilizing groove 313, flame transfer groove 314, second flame transfer hole 315, reinforcing rib structure 316, second square through hole 317, middle fire cover 32, and inner fire cover 33.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element 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 application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, 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 fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present application, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

It should be noted that, the numbers given before the elements or components such as "first" and "second" … of the present application are given in order to distinguish these elements from other elements by name, and thus, it may happen that the order in which a certain element is drawn out by the claims is different from the order in which the element is drawn out by the specification, particularly the specific embodiment. In this case, for convenience of understanding, a specific description will be given in detail in the embodiment.

Referring to fig. 1 to 22, a burner 100 according to an embodiment of the present application includes a base cup 10, a gas distribution plate structure 20, and a fire cover 30. The burner 100 may be applied to a gas cooker of an embodiment of the application.

Referring to fig. 1 to 7, the bottom cup 10 includes a primary air chamber 11, a first air inlet pipe 12, a second air inlet pipe 13, a third air inlet pipe 14, and a positioning member 15. A primary air chamber 11 is formed downwardly from the upper surface of the base cup 10 in the height direction of the base cup 10, and the primary air chamber 11 is used to supply primary air to the burner 100 and mix with the gas emitted from the gas inlet pipe into a mixture of air and gas. A first air intake pipe 12, a second air intake pipe 13, and a third air intake pipe 14 are formed at the bottom of the bottom cup 10. In the embodiment of the present application, the bottom cup 10 and the air inlet pipe may be made of metal materials such as cast iron, aluminum, copper, etc., and may be integrally formed by a mold or formed by machining, and is not particularly limited.

The first intake pipe 12 is provided with a first intake passage 121 and a first nozzle hole 122, the first nozzle hole 122 communicates with the first intake passage 121 and the primary air chamber 11, the first nozzle hole 122 is used for mounting a first nozzle (not shown), the first intake passage 121 is formed with a first intake 1211, and the first intake 1211 is connected to an external gas source. In this way, the fuel gas may enter the first air intake passage 121 through the first air inlet 1211, and then be ejected through the first nozzle installed on the first nozzle hole 122, and be mixed with the primary air in the primary air chamber 11 to a mixed gas.

The side wall of the second air inlet pipe 13 is connected with one end of the first air inlet pipe 12, two ends of the second air inlet pipe 13 are closed and provided with a second air inlet channel 131 and a second nozzle hole 132, the second air inlet channel 131 is communicated with the first air inlet channel 121, the second nozzle hole 132 is communicated with the second air inlet channel 131 and the primary air cavity 11, and the second nozzle hole 132 is positioned between one end of the second air inlet pipe 13 and the joint of the first air inlet pipe 12 and the second air inlet pipe 13. In the present embodiment, the number of the second nozzle holes 132 is two for mounting two second nozzles (not shown), wherein the distance between one of the second nozzle holes 132 and the junction is substantially identical to the distance between the other of the second nozzle holes 132 and the junction.

In this way, the gas may enter the first and second intake passages 121 and 131 from the first intake port 1211 and then be ejected through the first nozzle installed at the first nozzle hole 122 and the second nozzle installed at the second nozzle hole 132.

It will be appreciated that in the present embodiment, a part of the fuel gas entering from the first inlet 1211 is ejected from the first nozzles installed in the first nozzle holes 122, and another part of the fuel gas enters the second inlet passage 131 and is uniformly ejected from the two second nozzles installed in the two second nozzle holes 132. That is, the first and second intake passages 121 and 131 employ the same gas intake port, i.e., the first intake port 1211.

In addition, since the first nozzle holes 122 are provided on the first intake pipe 12, the distance between the two second nozzle holes 132 and the junction of the first intake pipe 12 and the second intake pipe 13 is substantially uniform, so that the gas entering the second intake passage 131 from the first intake passage 121 can be uniformly ejected from the second nozzles installed at the two second nozzle holes 132, and a reduction in the stability of the burner 100 due to uneven distribution of the gas and an excessive difference in the gas pressure can be avoided.

Further, referring to fig. 21, the shape of the first air intake passage 121 is tapered along the air intake direction, and the second air intake passage 131 is connected to the outlet of the smaller end of the first air intake passage 121, so that the air flow pressure entering the second air intake passage 131 from the first air intake passage 121 can be increased, and the air flow injection speed of the second nozzle of the second air intake pipe 13 can be ensured. The first air intake passage 121 may have a truncated cone shape.

Referring to fig. 5 and 6, in the present embodiment, the first air inlet pipe 12 and the second air inlet pipe 13 are disposed substantially perpendicular, and it is understood that in other embodiments, the first air inlet pipe 12 and the second air inlet pipe 13 may be disposed not perpendicular, and how to dispose may be determined according to practical situations. Preferably, the first air inlet pipe 12 is connected to a middle portion of the second air inlet pipe 13, and referring to fig. 5, a portion of the second air inlet pipe 13 located at the left side of the first air inlet pipe 12 and a portion of the second air inlet pipe 13 located at the right side of the first air inlet pipe 12 are symmetrically arranged with respect to the first air inlet pipe 12. The two second nozzles Kong Ye are symmetrically arranged with respect to the first intake pipe 12.

The third air intake pipe 14 is closed at one end and is provided with a third air intake passage 141 and a third nozzle hole 142, the third nozzle hole 142 communicates with the third air intake passage 141 and the primary air chamber 11, and the third nozzle hole 142 is used for mounting a third nozzle (not shown). In the present embodiment, the third intake pipe 14 is disposed substantially in parallel with the second intake pipe 13, the third intake passage 141 is isolated from the first intake passage 121 and the second intake passage 131, the third intake passage 141 is formed with a second intake port 1411, the second intake port 1411 is connected to an external fuel source, and the third intake passage 141 is independently intake with the second intake port 1411. In this way, the flow rate and the air pressure of the fuel gas discharged through the third nozzle can be ensured. Meanwhile, the flow rate of the fuel gas can be conveniently adjusted by adopting a separate air supply mode so as to adjust the power of the burner 100.

It will be appreciated that in other embodiments, both ends of the third intake pipe 14 may be closed, and the third intake passage 141 communicates with the second intake passage 131. Thus, the first air intake passage 121, the second air intake passage 131, and the third air intake passage 141 can share one gas intake port, i.e., the first air intake port 1211, without additionally providing the second air intake port 1411.

Referring to fig. 6 and 7, the positioning member 15 is disposed at the bottom of the first air inlet pipe 12, and the positioning member 15 is provided with a positioning hole 151, where the positioning hole 151 is used for positioning the burner 100 on an external component, such as a bottom shell of a gas cooker. The positioning hole 151 penetrates through the positioning piece 15 and partially penetrates into the pipe wall of the first air inlet pipe 12, the positioning hole 151 is isolated from the first air inlet channel 121, and the central axis CL1 of the positioning hole 151 and the central axis CL2 of the first air inlet channel 121 are offset from each other. Specifically, the center axis CL1 of the positioning hole 151 and the center axis CL2 of the first air intake passage 121 are offset from each other, which can be understood as two different-plane straight lines. In the example of fig. 6, CL1 is perpendicular to the paper surface, and in the example of fig. 7, CL2 is perpendicular to the paper surface.

In this way, even if the positioning hole 151 occupies the pipe wall of the first air inlet pipe 12, the situation that the wall thickness of the first air inlet pipe 12 is too thin due to the existence of the positioning hole 151 can be avoided, and further the problems that the processing difficulty of the bottom cup 10 is high, the rejection rate of the bottom cup 10 is high, and the air leakage risk exists in the finished product are solved.

In the present embodiment, the positioning hole 151 is located obliquely below the center axis CL2 of the first intake passage 121. In addition, the central axis CL1 of the positioning hole 151 is substantially perpendicular to the central axis CL2 of the first air intake passage 121, that is, the central axis CL1 of the positioning hole 151 is perpendicular to the different plane of the central axis CL2 of the first air intake passage 121, and the positioning hole 151 is disposed substantially perpendicular to the first air intake passage 121. In the example of fig. 6, CL1 is perpendicular to the paper surface, and in the example of fig. 7, CL2 is perpendicular to the paper surface. In one example, the positioning hole 151 may have a cylindrical shape.

In the present embodiment, the first nozzle hole 122 and the positioning hole 151 are provided in parallel to the length direction of the first intake pipe 12. Specifically, the first nozzle hole 122 and the positioning hole 151 are disposed at intervals along the length direction of the first air inlet pipe 12, the central axis of the first nozzle hole 122 is substantially parallel to the central axis CL1 of the positioning hole 151 and is located in the same plane, the plane is parallel to CL2, and the first nozzle hole 122 and the positioning hole 151 are disposed substantially perpendicular to the first air inlet channel 121.

Further, the upper surface of the bottom cup 10 is also formed with a flange 16, a first support block 17, a first mounting hole 18 and a second mounting hole 19. The flange 16 is formed upward along the opening edge of the primary air chamber 11, the number of the first supporting blocks 17 is plural, the plural first supporting blocks 17 are arranged on the flange 16 at intervals, the upper surface of the bottom cup 10 located outside the flange 16 is used for mounting a liquid bearing plate, and after the liquid bearing plate is mounted, the upper surface of the liquid bearing plate can be substantially flush with the upper surface of the flange 16. The first and second mounting holes 18 and 19 are used to mount a thermocouple (not shown) and an ignition needle (not shown) of the burner 100.

In addition, in order to stably fix the liquid bearing plate of the gas cooker on the upper surface of the bottom cup 10, a plurality of first connection holes 110 are further formed on the bottom cup 10, and the plurality of first connection holes 110 are used for installing and fixing the liquid bearing plate of the gas cooker.

Referring to fig. 8 to 11, the gas distribution plate 20 includes a first gas distribution plate 21 and a second gas distribution plate 22, and the first gas distribution plate 21 is disposed on the bottom cup 10.

In the present embodiment, the first gas distribution plate structure 21 represents a gas distribution plate structure described in the claims.

The first gas distribution plate structure 21 includes a carrying plate 211, a gas distribution plate 212, and a connection portion 213, where the carrying plate 211 and the gas distribution plate 212 are in a split structure, the gas distribution plate 212 is disposed on the carrying plate 211, and the gas distribution plate 212 is connected to the carrying plate 211 through the connection portion 213. Thus, the gas distribution plate 212 and the bearing plate 211 can be made of different materials separately and then connected together through the connecting part 213, so that the problems of high molding difficulty, high rejection rate, high cost and the like of the first gas distribution plate structure 21 are solved. Specifically, in the present embodiment, the connection portion 213 may be connected to the carrier tray 211 by caulking. In other embodiments, the connection portion 213 may be connected to the carrier platter 211 by welding.

In the present embodiment, the connection portion 213 and the gas separation tray 212 are integrally formed. That is, the connection portion 213 and the gas separation plate 212 are integrally formed, and may be integrally formed at the time of manufacture. The carrier plate 211 and the gas separation plate 212 are of a split structure, that is, the carrier plate 211 and the gas separation plate 212 are separately molded at the time of manufacture. In one example, gas distribution plate 212 and connecting portion 213 may be made of aluminum or cast iron and carrier plate 211 may be made of stainless steel. Thus, the carrier plate 211 is separately molded and made of stainless steel, which can reduce the thickness of the bottom while securing sufficient strength, thereby greatly reducing the weight of the carrier plate 211, compared to the case where the direct and gas separation plates 212 are integrally molded using aluminum or cast iron.

Referring to fig. 3, the first air distribution plate structure 21 is supported on the bottom cup 10 by a carrying plate 211, and the carrying plate 211 is carried on a plurality of first supporting blocks 17 of the bottom cup 10 to form primary air channels 101 at intervals from the bottom cup 10, and the primary air channels 101 are continuously distributed along the circumferential direction of the burner 100.

In this way, air can be made to enter the primary air chamber 11 from 360 degrees of the burner 100, greatly increasing the amount of primary air intake. Specifically, the primary air passages 101 are continuously distributed in the circumferential direction of the burner 100 such that the primary air chamber 11 is not shielded in all directions, and air in all directions of the burner 100 can enter the primary air chamber 11 through the primary air passages 101.

In addition, the planar shapes of the gas distribution plate 212 and the carrier plate 211 are substantially circular, and the orthographic projection of the gas distribution plate 212 on the carrier plate 211 is located within the range defined by the carrier plate 211. In this way, the overflowed soup can flow out along the bearing plate 211 in the using process of the burner 100, and cannot enter the burner 100 or reduce the amount entering the burner 100, so that the trouble of cleaning the burner 100 by a user is reduced, the overflowed soup is prevented from entering the burner 100 to rust the burner 100, and the service life of the burner 100 is reduced.

Referring to fig. 8, the carrier plate 211 is provided with a plurality of second connection holes 2111. In the present embodiment, the number of the connection portions 213 is plural, the plural connection portions 213 are disposed at intervals along the circumferential direction of the gas distribution plate 212, each connection portion 213 includes a second support block 2131 and a connection block 2132, the second support block 2131 connects the connection block 2132 with the gas distribution plate 212, referring to fig. 20, the connection block 2132 penetrates through the second connection hole 2111 and connects the carrier plate 211, and the second support block 2131 is supported on the upper surface of the carrier plate 211. In this way, the carrier tray 211 and the gas distribution tray 212 can be cooperatively installed to form the first gas distribution tray structure 21 by the connection block 2132 being engaged with the second connection hole 2111. Further, on the one hand, the carrier plate 211 and the gas distribution plate 212 are easy to be mounted, and on the other hand, the connection strength between the carrier plate 211 and the gas distribution plate 212 can be increased.

In addition, the carrier plate 211 is further provided with a third mounting hole 2114 and a fourth mounting hole 2115, and when the first gas distribution plate structure 21 is disposed on the bottom cup 10, the third mounting hole 2114 and the fourth mounting hole 2115 respectively correspond to the first mounting hole 18 and the second mounting hole 19, and the third mounting hole 2114 and the fourth mounting hole 2115 are respectively penetrated by the thermocouple and the ignition needle of the burner 100.

The gas distribution plate 212 comprises a first cavity 2121 and a first ejector tube 2122, the first ejector tube 2122 is arranged at the bottom of the first cavity 2121 in a protruding mode, the first ejector tube 2122 penetrates through the bearing plate 211, and the first cavity 2121 and the bearing plate 211 are arranged at intervals to form the secondary air channel 102.

In this embodiment, the first cavity 2121 represents a cavity described in the claims, and the first ejector 2122 represents an ejector described in the claims.

The first cavity portion 2121 is formed with a first gas chamber 21211, a first square through hole 21212, a protruding portion 21213, and a partition 21214. The boss 21213 protrudes upward from the edge of the first square through hole 21212 to define a first gas chamber 21211. The number of the partition pieces 21214 is two, and the partition pieces 21214 are connected with the protruding portions 21213, partition the first gas chamber 21211 into two sub gas chambers, the number of the first injection pipes 2122 is two, and the two first injection pipes 2122 are respectively communicated with the two sub gas chambers.

It should be noted that, in this embodiment, the first gas chamber 21211 represents a gas chamber described in claims.

When the first air distribution plate structure 21 is disposed on the base cup 10, the two first ejector tubes 2122 partially extend into the primary air chamber 11 and the two first ejector tubes 2122 are respectively opposed to the two second nozzles located in the two second nozzle holes 132.

Referring to fig. 4, 5 and 20, in order to enable the two first ejector tubes 2122 to be accurately opposite to the two second nozzles located in the two second nozzle holes 132, the two first ejector tubes 2122 are prevented from shaking and shifting during operation of the burner 100, so that stability of the burner 100 is reduced, the bottom cup 10 is further formed with a limiting structure 111, the limiting structure 111 is disposed on a side wall of the primary air chamber 11, and the number of the limiting structures 111 is two to limit the two first ejector tubes 2122 respectively. In the present embodiment, each of the limiting structures 111 includes three positioning ribs, which are uniformly disposed around the second nozzle hole 132.

Referring to fig. 8 to 11, the first ejector 2122 includes an air outlet end 21221, the air outlet end 21221 is located in the first gas chamber 21211, and an outer side of the air outlet end 21221 is connected to a bottom surface of the first gas chamber 21211 through an arc surface 21222. In this way, when the fuel gas enters the first fuel gas chamber 21211 through the air outlet end 21221 of the first injection pipe 2122, the outer side of the air outlet end 21221 of the first injection pipe 2122 is in transitional connection with the bottom surface of the first fuel gas chamber 21211 by adopting the cambered surface 21222, compared with the case that the air outlet end 21221 is in a step shape, the swirl of the fuel gas at the step can be prevented, so that the flow loss of the fuel gas when the fuel gas enters the first fuel gas chamber 21211 is reduced, and the heat load of the burner 100 is improved. In one example, the arcuate surface 21222 may be an arcuate surface. In other examples, the camber 21222 may be a camber formed by other conic s, or a combination of camber formed by different conic s.

In addition, the first ejector tube 2122 is provided with an ejector channel 21223 which is tapered from bottom to top, and the ejector channel 21223 comprises a first ejector channel 21224 and a second ejector channel 21225 which are sequentially connected from bottom to top, and the inner side slope of the first ejector channel 21224 is smaller than the inner side slope of the second ejector channel 21225. In this way, the flow speed of the air flow can be gradually increased by adopting the tapered injection channel 21223 to accelerate the ejection of the fuel gas, meanwhile, in the embodiment, the slope of the inner side surface of the first injection channel 21224 is smaller than that of the inner side surface of the second injection channel 21225, and when the air flow flows into the second injection channel 21225 from the first injection channel 21224, the air flow can be buffered to a certain extent, and the flame-leaving risk is reduced to a certain extent. In addition, in the embodiment of the application, the first injection channel 21224 and the second injection channel 21225 are in arc transition, so that the injection performance can be improved and the manufacturing is convenient.

Referring to fig. 10, two outlet ends 21221 of the two first ejector tubes 2122 are respectively located at intermediate positions of the two sub-gas chambers. In this embodiment, each sub-gas chamber is substantially 180 degrees arc-shaped, and the gas outlet 21221 is located at a 90 degree position within the sub-gas chamber. In this way, the fuel gas in each sub-fuel gas chamber can rapidly reach a uniformly distributed state.

In addition, in this embodiment, the partition 21214 does not completely partition the two sub-gas chambers, which still have a small area of communication at the partition 21214. In this manner, a sufficient supply of fuel gas is maintained in the first fuel gas chamber 21211 in the event of a blockage in one of the two first ejector tubes 2122.

Referring to fig. 12 to 14, the second air distribution plate structure 22 includes a second injection pipe 221, a third injection pipe 222, a second cavity 223, and a third cavity 224.

The second injection pipe 221 and the third injection pipe 222 are arranged at the bottom of the second cavity 223 at intervals, and the peripheral size of the second injection pipe 221 is different from that of the third injection pipe 222. The second injection pipe 221 and the third injection pipe 222 respectively pass through the first square through hole 21212 and penetrate through the bearing plate 211 to extend into the primary air cavity 11 of the bottom cup 10. The second injection conduit 221 is opposite the first nozzle at the first nozzle aperture 122 and the third injection conduit 222 is opposite the third nozzle at the third nozzle aperture 142.

In order to enable the second and third ejector pipes 221 and 222 to pass through the carrier plate 211 and partially extend into the primary air chamber 11, a first through hole 2112 matching the second ejector pipe 221 and a second through hole 2113 matching the third ejector pipe 222 are also formed in the carrier plate 211.

In the present embodiment, the outer peripheral dimension of the second ejector 221 may be understood as the diameter of the smallest circular hole through which the second ejector 221 can pass, and the outer peripheral dimension of the third ejector 222 may be understood as the diameter of the smallest circular hole through which the third ejector 222 can pass. It will be appreciated that when the ejector tube is a cylindrical tube, the peripheral dimension is the outer diameter of the ejector tube. When the injection pipe is a square cylindrical pipe, the peripheral dimension is the length of the diagonal line of the injection pipe, and when the section of the injection pipe is a regular polygon (such as a regular hexagon and the like), the peripheral dimension is the circumscribed circle of the regular polygon.

Since the outer peripheral dimensions of the second and third ejector pipes 221 and 222 are different, the dimensions of the first and second through holes 2112 and 2113 that match the two are also different. Therefore, the first and second gas separation disc structures 21 and 22 can be prevented from being foolproof when being mounted, so that the second and third injection pipes 221 and 222 of the second gas separation disc structure 22 can be quickly and correctly mounted in the first and second through holes 2112 and 2113 of the first gas separation disc structure 21. It should be noted that, the ejector tube is matched with the through hole, so that the ejector tube can smoothly penetrate through the through hole without being blocked. It will be appreciated that the aperture of the through-hole may be slightly larger than the peripheral dimension of the ejector tube in order to allow the ejector tube to be just passed through the through-hole without seizing the ejector tube. That is, the first through hole 2112 may be penetrated by the second injection pipe 221, and the second through hole 2113 may be penetrated by the third injection pipe 222.

In addition, in order to make the peripheral size of the second injection pipe 221 and the peripheral size of the third injection pipe 222 different, one of the two injection pipes with the same outer diameter is adopted as the third injection pipe 222 in this embodiment, and three ribs are arranged on the outer wall of the other injection pipe to enlarge the peripheral size of the injection pipe so as to form the second injection pipe 221, so that the purpose is achieved. It will be appreciated that in other embodiments, other techniques may be used to achieve this, for example, two different outer diameter ejector tubes or the like.

The second cavity 223 is provided with a second gas chamber 2231, the third cavity 224 is provided with a third gas chamber 2241, the third cavity 224 is at least partially arranged in the second gas chamber 2231, the second injection pipe 221 is communicated with the second gas chamber 2231, and the third injection pipe 222 is communicated with the third gas chamber 2241. Third gas chamber 2241 is separated from second gas chamber 2231 by third cavity 224.

Specifically, the second injector pipe 221 communicates with the second gas chamber 2231 and is isolated from the third gas chamber 2241, and the third injector pipe 222 communicates with the third gas chamber 2241 and is isolated from the second gas chamber 2231.

The second cavity portion 223 is further formed with a protrusion 2233 protruding toward the inside of the second gas chamber 2231. When the third cavity 224 is disposed in the second gas chamber 2231, the protrusion 2233 is tightly matched with a sidewall of the third cavity 224, and the first fire transfer holes 225 are formed on the sidewalls of the protrusion 2233 and the third cavity 224, the first fire transfer holes 225 communicate with the third gas chamber 2241 and the outside and are isolated from the second gas chamber 2231, and the first fire transfer holes 225 are used for guiding flame to the third gas chamber 2241 to form flame.

Referring to fig. 2, 15 to 18, the fire cover 30 includes an outer fire cover 31, a middle fire cover 32 and an inner fire cover 33. The first gas chamber 21211 in the present embodiment corresponds to an outer ring gas chamber of the burner 100, and the outer flame cover 31 is provided on the first cavity portion 2121 and covers the first gas chamber 21211; the second gas chamber 2231 corresponds to a middle ring gas chamber of the burner 100, and the middle fire cover 32 is provided on the second cavity portion 223 and covers the second gas chamber 2231; third gas chamber 2241 corresponds to an inner annular gas chamber of burner 100, and inner flame cover 33 is disposed on third cavity 224 and at least partially fills third gas chamber 2241. The outer fire cover 31, the middle fire cover 32 and the inner fire cover 33 are provided with fire holes 301, and fuel gas is sprayed out through the fire holes 301 to form outer ring flame, middle ring flame and inner ring flame respectively. The first flame transfer holes 225 serve to guide the middle ring flame to the flame holes 301 of the inner flame cover 33 in the third gas chamber 2241, forming an inner ring flame.

In the embodiment of the present application, the inner fire cover 33 provided on the third gas chamber 2241 is a porous ceramic plate. Thus, the fuel gas burns on the porous ceramic plate, so that the porous ceramic plate turns red to form infrared cooking, and the functions of extremely low fire, slow stewing with carbon fire and the like are realized. Meanwhile, the gas is burned at the middle fire cover 32 on the second gas chamber 2231 to form a blue middle ring flame, thereby skillfully realizing a red-blue combined combustion flame and improving combustion performance and heating efficiency.

The outer fire cover 31 is provided with a fire transfer groove 314 and a second fire transfer hole 315, the fire transfer groove 314 penetrates through the top surface 311 of the outer fire cover 31 and an opening is formed on the side surface 312 of the outer fire cover 31, and the second fire transfer hole 315 is opposite to the opening and is radially arranged. The flame transfer groove 314 and the second flame transfer hole 315 serve to guide the middle ring flame to the flame holes 301 of the outer flame cover 31 to form the outer ring flame.

The outer fire cover 31 is arranged on the first gas distributing plate structure 21, and the second gas distributing plate structure 22 is arranged on the outer fire cover 31 and penetrates through the outer fire cover 31 and the first gas distributing plate structure 21. In order to prevent air leakage and facilitate the installation of the second air distribution plate structure 22, the outer fire cover 31 is provided with a second square through hole 317, the second square through hole 317 corresponds to the first square through hole 21212 of the first air distribution plate structure 21, and the second air distribution plate structure 22 is penetrated by the second square through hole 317. In addition, a larger gap is formed between the second air distribution plate structure 22 and the square through holes, so that secondary air supplemented from the secondary air channel 102 can enter, air supplement is performed on fuel gas, and the combustion efficiency of the fuel gas is improved.

In order to make the outer ring flame of the burner 100 more stable during combustion, a flame stabilizing groove 313 is further formed on the side surface 312 of the outer flame cover 31, and the flame stabilizing groove 313 is communicated with the first gas chamber 21211. Further, in order to increase the strength of the outer fire cover 31, reduce the risk of deformation of the fire cover and reduce the risk of air leakage, the outer fire cover 31 is formed with a reinforcing rib structure 316 at the edge of the second square through hole 317. The rib structure 316 cooperates with the raised portion 21213 of the first cavity 2121 to move horizontally after encountering the obstruction of the outer fire cover 31 when the air flows upwardly from the air outlet end 21221 of the first ejector tube 2122, and to move in the sealed cavity formed by the outer fire cover 31 and the first cavity 2121, the air flow encounters the obstruction of the rib structure 316 when flowing horizontally, thereby reducing the risk of air leakage. In addition, even if the machining accuracy of the outer fire cover 31 is insufficient, there is a small gap when the outer fire cover is matched with the first cavity 2121, because the reinforcing rib structure 316 can block the horizontal movement of the air flow, negative pressure can be generated at the matched position, air can be sucked from the gap, and the air leakage risk is further reduced.

Referring to fig. 12 and 13, in order to facilitate the installation of the second gas distribution plate structure 22 on the outer fire cover 31, a supporting portion 2232 is provided on the outer wall of the second cavity portion 223 for supporting the second gas distribution plate structure 22. The supporting portion 2232 includes a guiding portion 22321 and a bearing portion 22322, the guiding portion 22321 is connected to the bearing portion 22322, the guiding portion 22321 is used for guiding installation of the second air distribution plate structure 22, the guiding portion 22321 protrudes out of the outer wall of the first cavity portion 2121, and the height of the guiding portion 22321 gradually increases from bottom to top, and during installation, the second air distribution plate structure 22 is supported on the outer fire cover 31 through the bearing portion 22322. In the present embodiment, two spaced support portions 2232 are provided on each of opposite sides of the second cavity portion 223. Thus, the second air distribution plate structure 22 is mounted more firmly.

Referring to fig. 19 to 22, when the burner 100 according to the embodiment of the present application is operated, gas enters the first gas inlet channel 121 from the first gas inlet 1211, part of the gas is injected into the second injection pipe 221 through the first nozzle installed at the first nozzle hole 122, the injected gas forms a negative pressure in the second injection pipe 221 to suck primary air from the primary air chamber 11, the primary air channel 101 is used to supplement the primary air in the primary air chamber 11, the primary air and the gas are premixed in the second injection pipe 221 to form a mixed gas, and then further mixed in the second gas chamber 2231, and the mixed gas is injected and burned outwards through the fire hole 301 of the middle fire cover 32 to form a middle ring flame. Wherein, path B in fig. 21 represents the gas flow path forming the middle-ring flame.

Another part of the fuel gas introduced through the first air inlet 1211 enters the second air inlet passage 131 from the first air inlet passage 121, and is then injected into the two first injection pipes 2122 from the two second nozzles installed at the two second nozzle holes 132, respectively, and the injected fuel gas forms a negative pressure in the first injection pipes 2122 to suck the primary air from the primary air chamber 11, and the primary air and the fuel gas are premixed in the first injection pipes 2122 to form a mixed gas, and then further mixed in the first fuel gas chamber 21211, and are injected and burned outwardly through the flame holes 301 of the outer flame cover 31 to form an outer ring flame. In the air intake process of the outer ring flame, the side face 312 of the air outlet end 21221 of the first injection pipe 2122 is connected with the bottom face of the first gas chamber 21211 through the cambered surface 21222, so that the flow loss of the gas entering the first gas chamber 21211 through the air outlet end 21221 of the first injection pipe 2122 can be reduced, the stability of the outer ring flame is maintained, and the heat load of the burner 100 is improved. Wherein path a in fig. 20 and 22 represents the gas flow path forming the outer ring flame.

In the present embodiment, the inner ring fire is independently introduced by the third air inlet pipe 14, and when the burner 100 is operated, the fuel gas is introduced into the third air inlet passage 141 from the second air inlet 1411, and then is injected into the third injection pipe 222 through the third nozzle installed at the third nozzle hole 142, and the injected fuel gas generates negative pressure in the third injection pipe 222 to suck the primary air from the primary air chamber 11, and the primary air and the fuel gas are premixed to form a mixed gas in the third injection pipe 222, and then are further mixed in the third fuel gas chamber 2241, and are injected and burned outwardly through the fire hole 301 of the inner flame cover 33 to form an inner ring flame. In fig. 21, a path C represents a gas flow path forming an inner ring flame.

In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. The burner is characterized by comprising a bottom cup and an air distribution disc structure;

the gas separation disc structure comprises:

the gas distribution plate comprises a cavity part and an injection pipe protruding from the bottom of the cavity part, the cavity part is provided with a gas chamber, the injection pipe comprises a gas outlet end positioned in the gas chamber, and the outer side of the gas outlet end is connected with the bottom surface of the gas chamber through an arc surface;

the bottom cup is provided with a primary air cavity, the injection pipe at least partially stretches into the primary air cavity, and the air separation disc structure and the bottom cup are arranged at intervals and form a primary air channel communicated with the primary air cavity;

the bottom cup is provided with: the first air inlet pipe is provided with a first air inlet channel; and

the positioning piece is arranged at the bottom of the first air inlet pipe, a positioning hole is formed in the positioning piece, the positioning hole penetrates through the positioning piece and partially penetrates into the pipe wall of the first air inlet pipe, the positioning hole is isolated from the first air inlet channel, and the central axis of the positioning hole and the central axis of the first air inlet channel are staggered;

the positioning hole is used for positioning the burner on an outer part; the positioning hole is positioned obliquely below the central axis of the first air inlet channel.

2. The burner of claim 1, wherein the injection pipe is provided with an injection channel in a tapered shape from bottom to top, the injection channel comprises a first injection channel and a second injection channel which are sequentially connected from bottom to top, and the slope of the inner side surface of the first injection channel is smaller than that of the inner side surface of the second injection channel.

3. The burner of claim 1, wherein the gas distribution plate structure comprises a bearing plate for bearing the gas distribution plate, a connecting part is arranged at the bottom of the cavity part, the bearing plate and the gas distribution plate are of a split structure, and the gas distribution plate is connected with the bearing plate through the connecting part.

4. The burner of claim 3, wherein the number of the connecting parts is plural, the plural connecting parts are arranged at intervals along the circumferential direction of the gas distribution plate, each connecting part comprises a supporting block and a connecting block, the supporting blocks are connected with the connecting blocks and the cavity, the bearing plate is provided with plural connecting holes, the connecting blocks penetrate through the connecting holes and are connected with the bearing plate, and the supporting blocks are supported on the upper surface of the bearing plate.

5. A burner as claimed in claim 3, wherein the gas distribution plate and the connection portion are of unitary construction.

6. A burner as claimed in claim 3, wherein the planar shape of the gas distribution plate and the carrier plate is substantially circular, and the orthographic projection of the gas distribution plate on the carrier plate is located within the range defined by the carrier plate.

7. A burner as claimed in claim 3, wherein the ejector tube extends through the carrier plate, the ejector tube communicates with the gas chamber, and the chamber portion and the carrier plate are spaced apart and form a secondary air passage.

8. The burner of claim 1, wherein the gas separation disc includes a partition member that separates the gas chamber into two sub-gas chambers that communicate with the injector tube.

9. A gas hob, characterized in, that it comprises a burner according to any one of the claims 1-8.