CN109000247B

CN109000247B - Bottom cup, burner and gas cooker

Info

Publication number: CN109000247B
Application number: CN201811027513.6A
Authority: CN
Inventors: 林梦; 施国生; 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: 2023-09-12
Anticipated expiration: 2038-09-04
Also published as: CN109000247A

Abstract

The invention discloses a bottom cup, a burner and a gas cooker, wherein the bottom cup comprises a bottom cup cover body and a bottom cup base body, the bottom cup cover body comprises a top wall and a first channel part, the top wall is provided with a gas outlet, the first channel part is convexly arranged on the top wall, the first channel part is provided with a first groove, the first channel part is provided with first channel joint surfaces positioned at two sides of the first groove, the bottom cup base body is provided with a mounting groove, the bottom cup cover body is arranged on the bottom cup base body and is partially positioned in the mounting groove, the bottom cup base body comprises a second channel part positioned at the bottom of the mounting groove, the second channel part is provided with a second groove, the second channel part is provided with second channel joint surfaces positioned at two sides of the second groove, at least one of the first channel joint surfaces and the second channel joint surfaces is processed by adopting a finish turning processing technology, the first groove and the second groove jointly form an injection channel with a Venturi effect, and the channel is communicated with the gas outlet.

Description

Bottom cup, burner and gas cooker

Technical Field

The invention relates to the technical field of cooking appliances, in particular to a bottom cup, a burner and a gas cooker.

Background

The burner in the related art includes a base cup and a torch provided on the base cup. The air and the fuel gas are mixed into mixed gas in an injection channel with venturi effect in the bottom cup, and the mixed gas is supplied to the flame thrower for combustion by the bottom cup. However, the injection channel in the related art is formed by adopting a core pulling process, so that the processing is inconvenient and the air tightness is poor.

Disclosure of Invention

The invention provides a bottom cup, a burner and a gas cooker.

The bottom cup of the burner comprises a bottom cup cover body and a bottom cup base body, wherein the bottom cup cover body comprises a top wall and a first channel part, the top wall is provided with an air outlet, the first channel part is convexly arranged on the top wall, the first channel part is provided with a first groove, the first channel part is formed with first channel joint surfaces positioned on two sides of the first groove, the bottom cup base body is provided with a mounting groove, the bottom cup cover body is mounted on the bottom cup base body and is partially positioned in the mounting groove, the bottom cup base body comprises a second channel part positioned at the bottom of the mounting groove, the second channel part is provided with a second groove, the second channel part is provided with second channel joint surfaces positioned on two sides of the second groove, at least one of the first channel joint surfaces and the second channel joint surfaces is processed by adopting a finish turning process, the first channel joint surfaces and the second channel joint surfaces are jointed, the first groove and the second groove form a venturi channel with a common ejector effect, and the air outlet is communicated.

In the bottom cup of the burner, at least one of the first channel joint surface and the second channel joint surface is processed by adopting a finish turning processing technology, so that the sealing effect is better, the injection channel is not required to be molded by adopting a core pulling technology, and the processing is convenient.

In certain embodiments, the base cup cover includes a first mounting wall protruding from the top wall, the first mounting wall surrounding the first channel portion, the base cup body includes a bottom wall and a second mounting wall protruding from the bottom wall, the top wall and the bottom wall are opposite, the bottom wall and the second mounting wall together form the mounting groove, and the first mounting wall is at least partially embedded in the mounting groove and is at least partially in overlapping engagement with the second mounting wall.

In some embodiments, the end surface of the first mounting wall is connected to the top surface of the bottom wall, and the connection between the end surface of the first mounting wall and the top surface of the bottom wall is processed by finish turning.

In some embodiments, the bottom cup cover body is provided with a cover body connecting groove, the first channel portion is formed with a first connecting joint surface, the first channel joint surface and the end surface of the first installation wall are coplanar, the cover body connecting groove is located between the first channel portion and the first installation wall, the bottom wall is provided with a bottom wall connecting groove, the top surface of the bottom wall is formed with a second connecting joint surface, the second channel portion is formed with a third connecting joint surface, the second connecting joint surface and the third connecting joint surface surround the bottom wall connecting groove, the second connecting joint surface, the second channel joint surface and the third connecting joint surface are coplanar, the first connecting joint surface and the third connecting joint surface are joined, the end surface of the first installation wall and the second connecting joint surface are joined, the cover body connecting groove and the bottom wall connecting groove jointly form a connecting channel, and the connecting channel is communicated with the injection channel and the air outlet.

In some embodiments, a first connection channel is formed in the bottom cup, the air outlet comprises an outer ring air outlet, and the first connection channel is connected with the air outlet end of the injection channel and the outer ring air outlet.

In some embodiments, the outer ring air outlet comprises a first outer ring air outlet and a second outer ring air outlet which are arranged at intervals, the first connecting channel comprises a first sub-connecting channel and a second sub-connecting channel, the first sub-connecting channel and the second sub-connecting channel are respectively connected with two sides of an air outlet end of the injection channel, the first sub-connecting channel is communicated with the first outer ring air outlet and the injection channel, the first sub-connecting channel is in arc connection with the air outlet end of the injection channel, the second sub-connecting channel is communicated with the second outer ring air outlet and the injection channel, and the second sub-connecting channel is in arc connection with the air outlet end of the injection channel.

In some embodiments, the bottom cup is provided with a primary air cavity, the primary air cavity is convexly arranged at the side edge of at least one of the bottom cup cover body and the bottom cup base body, and the primary air cavity is provided with a primary air cavity communicated with the injection channel.

In certain embodiments, at least one of the base cup cover and the base cup has a first center and the primary air cavity has a second center, the first center being disposed off-center from the second center.

The burner of the embodiment of the invention comprises a flame arrester and the bottom cup of the burner of any of the embodiments.

In the burner, at least one of the first channel joint surface and the second channel joint surface is processed by adopting a finish turning processing technology, so that the sealing effect is better, the injection channel is not required to be molded by adopting a core pulling technology, and the burner is convenient to process.

In certain embodiments, at least one of the base cup cover and the base cup has a first center and the flame thrower has a third center, the third center being disposed off-center from the first center.

The gas cooker of the embodiment of the invention comprises a flame thrower and the burner of any embodiment, wherein the flame thrower is arranged on the bottom plate cover body and communicated with the gas outlet.

In the gas cooker, at least one of the first channel joint surface and the second channel joint surface is processed by adopting a finish turning processing technology, so that the sealing effect is better, the injection channel is not required to be molded by adopting a core pulling technology, and the processing is convenient.

Additional aspects and advantages of embodiments of the invention 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 invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention 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 invention;

FIG. 2 is another schematic perspective view of a burner according to an embodiment of the present invention;

FIG. 3 is a bottom view of a burner of an embodiment of the present invention;

FIG. 4 is a front view of a burner of an embodiment of the present invention;

FIG. 5 is a side view of a burner according to an embodiment of the present invention;

FIG. 6 is a top view of a burner of an embodiment of the present invention;

FIG. 7 is an exploded perspective view of a burner according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a combustor of an embodiment of the present invention;

FIG. 9 is another cross-sectional schematic view of a combustor of an embodiment of the present invention;

FIG. 10 is yet another cross-sectional schematic view of a combustor of an embodiment of the invention;

FIG. 11 is a top view of a burner according to an embodiment of the present invention with a fire cover removed;

FIG. 12 is a schematic perspective view of a base cup and nozzle holder of a burner according to an embodiment of the present invention;

FIG. 13 is an exploded schematic view of a base cup and nozzle holder of a burner of an embodiment of the present invention;

FIG. 14 is another exploded schematic view of a base cup and nozzle holder of a burner of an embodiment of the present invention;

FIG. 15 is a perspective view of a base cup holder and nozzle holder of a burner according to an embodiment of the present invention;

FIG. 16 is another perspective view of a base cup holder and nozzle holder of a burner according to an embodiment of the present invention;

FIG. 17 is a schematic perspective view of a bottom cup cover of a burner in accordance with an embodiment of the invention;

FIG. 18 is another perspective view of a bottom cup cover of a burner in accordance with an embodiment of the invention;

FIG. 19 is yet another perspective view of a bottom cup cover of a burner in accordance with an embodiment of the invention;

FIG. 20 is a perspective view of a base cup housing of a burner according to an embodiment of the present invention;

FIG. 21 is another perspective view of a base cup housing of a burner according to an embodiment of the present invention;

FIG. 22 is a further schematic perspective view of a base cup housing of a burner according to an embodiment of the present invention;

FIG. 23 is a schematic perspective view of a nozzle holder of a burner according to an embodiment of the present invention;

FIG. 24 is yet another perspective view of a nozzle holder of a burner according to an embodiment of the present invention;

FIG. 25 is a schematic perspective view of a flame thrower of a burner of an embodiment of the invention;

FIG. 26 is an enlarged schematic view of a portion of a flame thrower I of the combustor of FIG. 25;

FIG. 27 is another perspective view of a flame thrower of a burner of an embodiment of the invention;

FIG. 28 is yet another perspective view of a burner according to an embodiment of the present invention;

FIG. 29 is another exploded schematic view of a burner of an embodiment of the present invention;

FIG. 30 is a schematic perspective view of a base cup and nozzle holder of a burner in accordance with an embodiment of the present invention;

FIG. 31 is an exploded schematic view of a base cup and nozzle holder of a burner of an embodiment of the present invention;

FIG. 32 is another perspective view of a bottom cup cover of a burner in accordance with an embodiment of the invention;

FIG. 33 is yet another perspective view of a bottom cup cover of a burner in accordance with an embodiment of the invention;

FIG. 34 is yet another perspective view of a bottom cup cover of a burner in accordance with an embodiment of the invention;

FIG. 35 is a perspective view of a base cup housing of a burner according to an embodiment of the present invention;

FIG. 36 is another perspective view of a base cup housing of a burner according to an embodiment of the present invention;

fig. 37 is another perspective view of a flame thrower of a burner of an embodiment of the invention.

Description of main reference numerals:

a burner 100;

the bottom cup 10, the injection channel 101, the connection channel 102, the first connection channel 1021, the first sub-connection channel 10211, the second sub-connection channel 10212, the second connection channel 1022, the third sub-connection channel 10221, the fourth sub-connection channel 10222, the first mounting hole 103, the bottom cup lid 11, the first engagement surface 110, the first channel engagement surface 1101, the first connection engagement surface 1102, the second positioning hole 1103, the top wall 111, the top surface 1110, the first mounting wall 112, the first channel portion 113, the first recess 1131, the air outlet 114, the outer ring air outlet 1141, the inner ring air outlet 1142, the first outer ring air outlet 1143, the second outer ring air outlet 1144, the first inner ring air outlet 1145 the second inner ring air outlet 1146, the first secondary air passage 115, the first positioning structure 1151, the cover attachment groove 116, the base cup holder 12, the fixing hole 1201, the bottom wall 121, the second engagement surface 1210, the second connection engagement surface 12101, the second passage engagement surface 12102, the third connection engagement surface 12103, the bottom wall attachment groove 1211, the second mounting wall 122, the second passage portion 123, the second groove 1231, the first mounting groove 124, the primary air cavity 13, the primary air cavity 131, the base cup through hole 132, the ring 133, the opening 1331, the first positioning hole 1332, the cavity body 134, the positioning post 1341, the second positioning structure 135, the first support plate 1351, the second support plate 1352, the second mounting hole 1353;

The nozzle holder 20, the air inlet 21, the first positioning surface 210, the first channel 211, the second channel 212, the first air inlet 213, the second air inlet 214, the baffle 22, the third positioning structure 23, the mounting plate 24, the second positioning surface 241, the second mounting groove 242;

the flame thrower 30, the side wall 301, the flame groove 302, the pressure release chamber 303, the pressure release port 3031, the gas mixing chamber 31, the outer gas mixing chamber 311, the inner gas mixing chamber 312, the flame hole 32, the outer ring flame hole 321, the inner ring flame hole 322, the outer ring cavity 33, the inner ring cavity 34, the second secondary air channel 341, the fourth positioning structure 342, the positioning groove 343, the positioning block 344, the first connecting part 35, the flame thrower connecting channel 351, the second connecting part 36, the flow guiding surface 37, the baffle 38, the joint 381, the mixed gas channel 39;

fire cover 40, outer ring fire cover 41, inner ring fire cover 42, inner ring fire cover through hole 421;

a burner 200;

base cup 210, first injection channel 201, connecting channel 202, base cup cover 211, first engagement surface 2110, top wall 2111, air outlet 2114, first mounting wall 2112, first channel portion 2113, first recess 21131, cover attachment groove 2116, base cup base 212, bottom wall 2121, bottom wall attachment groove 21211, second engagement surface 2210, second mounting wall 2122, second channel portion 2123, primary air cavity 213, primary air cavity 2131, first cavity portion 2133, ring 2135, first connecting wall 2136, first mating groove 21331, second cavity portion 2134, second connecting wall 2137, mounting opening 21371, second mating groove 21341,

A nozzle holder 220, a first intake passage 221, a second intake passage 222, a third intake pipe 223, a fourth intake pipe 224, an inner-ring intake pipe 270, a third nozzle 271;

the flame thrower 230, the outer ring fire hole 2301, the inner ring fire hole 2302, the outer ring cavity 233, the outer gas mixing chamber 2331, the inner ring cavity 234, and the inner gas mixing chamber 2341;

fire cover 240, outer ring fire cover 241, inner ring fire cover 242.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

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

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

In the description of the present invention, 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 invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, 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 invention. 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 invention. Furthermore, the present invention 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 invention 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.

Referring to fig. 1 to 26, a burner 100 according to an embodiment of the present invention includes a base cup 10, a nozzle holder 20, a flame arrester 30, and a fire cover 40. The burner 100 may be applied to a gas cooker of an embodiment of the invention.

Referring to fig. 1-12, a base cup 10 includes a base cup cover 11 and a base cup base 12. The bottom cup 10 is provided with a primary air cavity 13. The bottom cup cover 11 is mounted on the bottom cup base 12, for example, the bottom cup cover 11 is riveted with the bottom cup base 12. In order to allow air to fully enter the primary air cavity 13, the primary air cavity 13 is protruded at a side edge of at least one of the bottom cup cover 11 and the bottom cup base 12.

Referring to fig. 7-13, an ejector channel 101 with Venturi effect is formed in the bottom cup 10. The bottom cup 10 is provided with a connecting channel 102. The connecting channel 102 has a guiding effect on the fuel gas. The connection channel 102 includes a first connection channel 1021 and a second connection channel 1022. The first connecting passage 1021 communicates the injection passage 101 with the second connecting passage 1022. The first connection passage 1021 has an arc shape so that resistance to the flow of the air current in the first connection passage 1021 can be reduced. To ensure the flow rate of the air flow out of the connection passage 102, the first connection passage 1021 may be tapered in the air flow direction. In addition, the bottom cup 10 is provided with a first mounting hole 103. The first mounting hole 103 may be used to mount a thermocouple (not shown) and an ignition needle (not shown). It will be appreciated that in order to reduce the resistance to airflow, the first connecting passage 1021 may be arcuately connected to the outlet end of the injection passage 101. A single injection channel 101 is provided in the bottom cup of the present embodiment. Referring to fig. 8, the injection passage 101 is arranged substantially horizontally.

Referring to fig. 6 and 8, at least one of the bottom cup cover 11 and the bottom cup base 12 has a first center x (a broken line m1 in fig. 8 is a central axis where the first center x is located). The primary air cavity 13 has a second center y (the broken line m2 in fig. 8 is the central axis where the second center y is located). The first center x and the second center y are eccentrically disposed. Specifically, at least one of the bottom cup cover 11 and the bottom cup base 12 has a regular planar shape, and the primary air cavity 13 has a regular planar shape. For example, the planar shape of the bottom cup holder 12 is circular arc, the first center x is the center of the circle where the plane of the bottom cup holder 12 is located, the planar shape of the primary air cavity 13 is circular arc, and the second center y is the center of the circle where the plane of the primary air cavity 13 is located. For another example, the planar shape of the bottom cup base 12 is square, the first center x is the intersection point of the diagonals of the square where the plane of the bottom cup base 12 is located, the planar shape of the primary air cavity 13 is square, and the second center y is the intersection point of the diagonals of the square where the plane of the primary air cavity 13 is located. This ensures that air can enter the primary air cavity 13 sufficiently to facilitate mixing of the fuel gas and air within the primary air cavity 13. Of course, it is understood that the bottom cup cover 11, the bottom cup holder 12, and the primary air cavity 13 may also have other regular shapes (e.g., oval, etc.).

Referring to fig. 17-20, bottom cup cover 11 includes a top wall 111, a first mounting wall 112, and a first channel portion 113. The bottom cup cover 11 is formed with a first engagement surface 110. The bottom cup cover 11 is provided with a cover connecting groove 116. The cover attachment groove 116 is located between the first passage portion 113 and the first mounting wall 112.

The top wall 111 is provided with an air outlet 114. The injection channel 101 communicates with the air outlet 114. The mixture of gas and air thus ejected from the ejection passage 101 can be supplied from the gas outlet 114 to the flame thrower 30 for combustion.

Referring to fig. 16, in order to enable the burner 100 to form a multi-ring flame, the air outlet 114 includes an outer ring air outlet 1141 and an inner ring air outlet 1142. The first connecting passage 1021 connects the air outlet end of the injection passage 101 and the outer ring air outlet 1141. In order to increase the air outlet area of the outer ring air outlet 1141 and ensure the uniformity of the air outlet, the outer ring air outlet 1141 is provided in an arc shape, for example, a circular arc shape, and the center of the circle where the outer ring air outlet 1141 is located overlaps the second center y of the primary air cavity 13. In addition, outer ring air outlet 1141 and inner ring air outlet 1142 protrude from top surface 1110 of top wall 111, respectively.

Referring to fig. 17, in order to make the air outlet of the outer ring air outlet 1141 more uniform, the outer ring air outlet 1141 includes a first outer ring air outlet 1143 and a second outer ring air outlet 1144 disposed at intervals. The first connection path 1021 includes a first sub-connection path 10211 and a second sub-connection path 10212. The first sub-connection passage 10211 and the second sub-connection passage 10212 are respectively connected to both sides of the air outlet end of the injection passage 101. The first sub-connecting passage 10211 communicates with the first outer ring air outlet 1143 and the injection passage 101. The second sub-connecting passage 10212 communicates with the second outer ring air outlet 1144 and the injection passage 101. Wherein, the first sub-connection passage 10211 and the second sub-connection passage 10212 may each be arc-shaped, and the first sub-connection passage 10211 and the second sub-connection passage 10212 may be arranged to be symmetrical with respect to the central axis of the injection passage 101 of the bottom cup 10. In order to reduce the resistance of the air flow, the first sub-connection passage 10211 may be connected with the air outlet end of the injection passage 101 in an arc shape, and the second sub-connection passage 10212 may be connected with the air outlet end of the injection passage 101 in an arc shape.

Referring to fig. 17, in order to make the air outlet of the inner ring air outlet 1142 more uniform, the inner ring air outlet 1142 includes a first inner ring air outlet 1145 and a second inner ring air outlet 1146 disposed at intervals. The second connection channel 1022 includes a third sub-connection channel 10221 and a fourth sub-connection channel 10222. Third sub-coupling passage 10221 communicates with first sub-coupling passage 10211 and first inner ring air outlet 1145. Fourth sub-coupling passage 10222 communicates with second sub-coupling passage 10212 and second inner ring air outlet 1146. A first secondary air passage 115 (shown in fig. 8) is formed in a surface portion of the top wall 111 between the first inner ring air outlet 1145 and the second inner ring air outlet 1146. At this time, the passage formed by the third sub-connection passage 10221 communicating with the first sub-connection passage 10211 and the passage formed by the fourth sub-connection passage 10222 communicating with the second sub-connection passage 10212 do not communicate, and are located on both sides of the first secondary air passage 115, respectively. This increases the secondary air intake area, and the outside air can sufficiently enter the first secondary air passage 115, thereby ensuring the secondary air intake capability.

A surface portion (upper surface portion in the present embodiment) of the top wall 111 is formed with a first positioning structure 1151 that is located in the first secondary air passage 115. The first mounting wall 112 is provided protruding from the top wall 111. The first channel portion 113 is protruding from the top wall 111. The first mounting wall 112 surrounds the first channel portion 113.

Referring to fig. 18, the first channel portion 113 is provided with a first groove 1131. The first channel portion 113 is formed with first channel engagement surfaces 1101 on both sides of the first groove 1131. The first passage portion 113 is formed with a first connection engagement surface 1102. The first channel engagement surface 1101, the first connection engagement surface 1102, and the end surface of the first mounting wall 112 are coplanar. The first engagement surface 110 includes a first channel engagement surface 1101 and a first connection engagement surface 1102.

Referring to fig. 14-16 and fig. 20-22, the base cup holder 12 includes a bottom wall 121, a second mounting wall 122, and a second channel portion 123. The second mounting wall 122 is provided protruding from the bottom wall 121. The top wall 111 and the bottom wall 121 are opposite. The bottom wall 121 is opposite the first engagement surface 110. The base cup housing 12 is formed with a first mounting slot 124. Specifically, the bottom wall 121 and the second mounting wall 122 are formed together with a first mounting groove 124. First mounting wall 112 is at least partially nested in first mounting groove 124 and at least partially in overlapping engagement with second mounting wall 122, i.e., base cup lid 11 is mounted to base cup 12 and partially within first mounting groove 124.

Specifically, the first mounting wall 112 and the second mounting wall 122 are in overlapping engagement in the combustor 100 interior-to-exterior direction (refer to the orientation of fig. 5). In this way, in the heating or cooling process of the burner 100, the connection part between the first installation wall 112 and the second installation wall 122 can expand with heat and contract with cold, so that better sealing performance is further ensured, and the sealing performance of the bottom cup cover 11 installed on the bottom cup base 12 is better. The bottom cup 10 is not prone to air leakage. This does not result in an insufficient amount of the mixture of air and gas of the flame thrower 30, which in turn affects the normal operation of the burner 100. In one example, the bottom cup 10 may be formed from cast aluminum.

The bottom wall 121 is provided with a bottom wall connecting groove 1211. The cover attachment slot 116 and the bottom wall attachment slot 1211 together form the attachment channel 102. The connecting passage 102 communicates the injection passage 101 with the air outlet 114. The connecting channel 102 and the injection channel 101 together form the gas-air mixture channel 39 of the base cup 10. The top surface of the bottom wall 121 is formed with a second engagement surface 1210. The second mounting wall 122 surrounds the second engagement surface 1210. The first engagement surface 110 and the second engagement surface 1210 are engaged. At least one of the first engagement surface 110 and the second engagement surface 1210 is finished using a finish machining process. Thus, the sealing effect is better. The second engagement surface 1210 includes a second connection engagement surface 12101, a second channel engagement surface 12102, and a third connection engagement surface 12103. The end surface of the first mounting wall 112 is engaged with the second connection engagement surface 12101.

In order to enhance the sealing effect, the end surface of the first mounting wall 112 meets the top surface of the bottom wall 121. It should be noted that, the junction between the end surface of the first mounting wall 112 and the top surface of the bottom wall 121 may be processed by a finish machining process. That is, the end face of the first mounting wall 112 may be finished, or the portion of the top face of the bottom wall 121 that is in contact with the first mounting wall 112 may be finished, or both the end face of the first mounting wall 112 and the portion of the top face of the bottom wall 121 that is in contact with the first mounting wall 112 may be finished.

The second channel portion 123 is located at the bottom of the first mounting groove 124. The first channel portion 113 and the second channel portion 123 are connected. The second mounting wall 122 surrounds the second channel portion 123. The second channel portion 123 is provided with a second groove 1231. The first groove 1131 and the second groove 1231 together form the injection passage 101. This facilitates the shaping of the injection passage 101. The second channel portion 123 forms second channel engagement surfaces 12102 located on both sides of the second groove 1231. The first channel engagement surface 1101 and the second channel engagement surface 12102 are engaged. At least one of the first channel engagement surface 1101 and the second channel engagement surface 12102 is treated using a finish machining process. The second channel portion 123 forms a third connection interface 12103. The first connection engagement surface 1102 and the third connection engagement surface 12103 are engaged. The second and third connection interfaces 12101 and 12103 surround the bottom wall connection slot 1211. The second connection interface 12101, the second channel interface 12102, and the third connection interface 12103 are coplanar.

Referring to fig. 12-22, the primary air cavity 13 is provided with a primary air cavity 131 communicating with the injection passage 101. The side wall of the primary air chamber 131 is provided with a bottom cup through hole 132 communicated with the primary air chamber 131. Air enters the primary air chamber 131 through the bottom cup through hole 132 and is mixed with fuel gas in the primary air chamber 131.

The primary air cavity 13 includes a ring 133 and a cavity body 134. The ring 133 projects from the side of the bottom cup cover 11. The ring 133 has an opening 1331. The cavity body 134 projects from the side of the base cup body 12. The ring-shaped member 133 is sleeved on the outer wall of the cavity body 134 and forms the primary air cavity 131 together. The opening 1331 communicates with the primary air chamber 131. The side of the cavity body 134 is provided with a bottom cup through hole 132. The planar shape of the ring 133 is arc-shaped, and the planar shape of the cavity body 134 is arc-shaped.

For ease of installation and positioning, the ring 133 is provided with a first positioning hole 1332. The top surface of the cavity body 134 is convexly provided with a positioning post 1341. The positioning posts 1341 are fixed in the first positioning holes 1332 to perform positioning and fixing functions in the process of combining the bottom cup cover 11 and the bottom cup base 12.

The side wall of the primary air cavity 13 is provided with a second positioning structure 135 protruding outwards. The second positioning structure 135 includes a first support plate 1351 and a second support plate 1352. The first support plate 1351 may be a circular arc plate, and the second support plate 1352 may be a flat plate. The second support plate 1352 is provided with a second mounting hole 1353.

The nozzle holder 20 is mounted to a side of the bottom cup 10. For ease of installation and air supply, the nozzle holder 20 is removably mounted to the side wall of the primary air cavity 13. The nozzle holder 20 is located at the bottom cup through hole 132 and is configured to block or open the bottom cup through hole 132. Because the nozzle holder 20 is detachable, different nozzle holders 20 can be matched for the burner 100 according to the requirements of upper air intake and lower air intake, when the nozzle holder 20 shields the bottom cup through hole 132, the burner 100 can be designed as an upper air intake burner, and when the nozzle holder 20 opens the bottom cup through hole 132, the burner 100 can be designed as a lower air intake burner, or as an upper air intake burner and a lower air intake burner. Therefore, the air intake mode of the burner 100 can be flexible and changeable under the condition of low cost, and is suitable for different use environments. It should be noted that the nozzle holder 20 may be manufactured by a loose core process.

Referring to fig. 23-24, the nozzle holder 20 includes an air inlet 21, a baffle 22, a third positioning structure 23, and a mounting plate 24. The baffle 22 is provided protruding above the air intake portion 21. The height of the baffle 22 is adjustable such that the baffle 22 obscures or opens the bottom cup through hole 132. When the baffle 22 shields the bottom cup through hole 132, the baffle 22 fills the bottom cup through hole 132. This facilitates shielding or opening of the bottom cup through hole 132. The second positioning structure 135 is connected with the third positioning structure 23 and defines the position of the nozzle holder 20 on the base cup 10 together from different at least two directions to fix the nozzle holder 20 and to facilitate installation and foolproof. The mounting plate 24 is provided on the air intake portion 21. Preferably, the at least two directions include two directions perpendicular to each other. It will be appreciated that in other embodiments, the baffle may also directly cover the outer surface of the side wall of the primary air chamber 131, such that the baffle may also be configured to block the bottom cup through hole 132. In addition, in other embodiments, the nozzle holder may omit the baffle, and a burner with lower intake air may be implemented, in which case it is also understood that the height of the baffle is 0.

Referring to fig. 4 and 8, in order to make the overall structure of the burner 100 more compact by fully utilizing the installation space, the air inlet portion 21 is provided with a first passage 211 and a second passage 212 which are sequentially communicated in the air inlet direction (as indicated by the dotted arrow in fig. 5). The first passage 211 has a first intake center z in the intake direction of the intake portion 21. The second passage 212 has a second intake center g in the intake direction of the intake portion 21. The first air intake center z and the second air intake center g are eccentrically disposed. The first channel 211 and the second channel 212 may have a regular column shape, such as a cylinder shape or an elliptic cylinder shape. In addition, the first and second passages 211 and 212 may be formed by a mold, so that concentricity of each passage can be ensured. It should be noted that, because the airflow in the air inlet portion 21 is substantially static, the resistance of the airflow passing through the second passage 212 from the first passage 211 is small. Wherein the primary air chamber 131 communicates with the second channel 212. In addition, a first nozzle (not shown) may be installed at the air outlet of the second passage 212 such that the first nozzle is opposite to the injection passage 101.

Specifically, in the present embodiment, the intake portion 21 includes a first intake pipe 213 and a second intake pipe 214. The first air inlet pipe 213 opens the first passage 211. The second air inlet pipe 214 is provided with a second channel 212. The first air intake duct 213 and the second air intake duct 214 are thus arranged eccentrically. This allows the first air inlet duct 213 to be disposed downward with respect to the second air inlet duct 214 to leave an upper space of the nozzle holder 20, so that there is enough space for placing the panel. In addition, the second air inlet pipe 214 may be supported by the first support plate 1351 to be positioned.

The first passage 211 is closer to the intake end of the intake portion 21 than the second passage 212. The cross-sectional dimension of the first channel 211 is larger than the cross-sectional dimension of the second channel 212. For example, if the first channel 211 and the second channel 212 are circular, the radius of the first channel 211 is greater than the radius of the second channel 212; if the first and second channels 211, 212 are square, the cross-sectional area of the first channel 211 is greater than the cross-sectional area of the second channel 212.

The air intake portion 21 is formed with a first positioning surface 210 (as shown in fig. 24). The bottom surface of the mounting plate 24 is formed with a second positioning surface 241. The first positioning surface 210 and the second positioning surface 241 constitute the third positioning structure 23. The side of the first support plate 1351 engages the first positioning surface 210. The top surface of the second support plate 1352 is engaged with the second positioning surface 241. The first positioning surface 210 may be one positioning surface of a step structure formed by eccentric arrangement of the first air inlet pipe 213 and the second air inlet pipe 214.

22-24, the number of mounting plates 24 is two in order to further enhance the stability of the mounting of the nozzle holder 20. Two mounting plates 24 are provided on opposite sides of the air intake portion 21, respectively. The number of the second support plates 1352 is two. The first support plate 1351 is connected to two second support plates 1352. Such that the top surfaces of the two second support plates 1352 are capable of engaging the second positioning surfaces 241 of the two mounting plates 24, respectively.

The mounting plate 24 is provided with a second mounting groove 242. The second mounting groove 242 is in corresponding communication with a second mounting hole 1353 of the second support plate 1352. The second mounting groove 242 and the second mounting hole 1353 are provided for fixing a fixing member (not shown) for fixing the nozzle holder 20 and the base cup 10. The second mounting groove 242 may be a U-shaped groove.

Referring to fig. 1 and 25-27, a flame arrester 30 is mounted to the bottom cup cover 11. In the present embodiment, the flame thrower 30 is mounted to the top wall 111. The offset portion of the top wall 111 from the flame arrester 30 may be used to provide a liquid tray (not shown), which may make full use of the installation space of the top wall 111 and make the overall structure of the burner 100 more compact. When the liquid bearing disc is fixed, the fastener can penetrate through the second positioning holes 1103 of the liquid bearing disc and the bottom cup cover body 11 and is fixed in the fixing holes 1201 of the bottom cup base body 12 so as to fix the liquid bearing disc, the bottom cup cover body 11 and the bottom cup base body 12 at the same time, and at the moment, the positioning points of the bottom cup cover body 11 and the liquid bearing disc are consistent with the positioning points of the bottom cup cover body 11 and the bottom cup base body 12, so that the reliability of integral sealing can be ensured, and the hole site procedures and the assembly procedures are reduced, and the integral efficiency is improved. In one example, the flame thrower may be made of cast aluminum.

The flame thrower 30 is formed with a gas mixing chamber 31 and a flame hole 32 communicating with the gas mixing chamber 31. The air outlet 114 communicates with the injection passage 101 and the gas mixing chamber 31. The torch 30 has a third center k (the broken line m3 in fig. 5 is the central axis where the third center k is located). The first center x is disposed eccentrically to the third center k. The third center k of the flame thrower 30 is eccentrically arranged with the first center x of the bottom cup 10, so that the bottom cup 10 can have more space to set the injection channel 101 longer, so that the injection channel 101 has larger injection capacity, the heat load of the burner 100 can be improved, the amount of the mixed gas of the fuel gas and the air entering the fuel gas mixing cavity 31 can be ensured, and the combustion stability of the burner 100 is ensured. In the present embodiment, the third center k is concentric with the second center y. The dashed line m3 coincides with the dashed line m 2. Of course, it is understood that the third center k and the second center y may also be offset.

The planar shape of the flame thrower 30 may be regular, for example, the planar shape of the flame thrower 30 shown in the drawing is circular. In other embodiments, the planar shape of the flame thrower 30 may be elliptical arc or square, etc. When the planar shape of the flame thrower 30 is circular arc and the planar shape of the primary air cavity 13 is circular arc, the center of the circle where the plane of the flame thrower 30 is located overlaps with the center of the circle where the plane of the primary air cavity 13 is located. This is more advantageous for mixing of gas and air. When the outer ring air outlet 1141 is in the circular arc shape, the center of the plane in which the outer ring air outlet 1141 is located overlaps the third center k of the flame thrower 30, so that the flow resistance of the mixed gas entering the flame thrower 30 from the outer ring air outlet 1141 is small.

A pressure relief cavity 303 is formed in the bottom cup 10. The gas and air mixture passage 39 and the pressure release chamber 303, which are formed by the connecting passage 102 and the injection passage 101, are located on both sides of the joint 381 between the first joint surface 110 and the second joint surface 1210. The bottom cup cover 11 is provided with a pressure relief opening 3031 communicated with the pressure relief cavity 303. The air outlet 114 is spaced from the pressure relief port 3031. Because the mixed gas channel 39 and the pressure release cavity 303 are located at two sides of the joint 381 of the first joint surface 110 and the second joint surface 1210, after the mixed gas of the mixed gas channel 39 leaks to the pressure release cavity 303 through the joint 381, the mixed gas can leak to the upper side of the bottom cup 10 through the pressure release port 3031 and can be burnt and consumed by the flame thrower 30 above the bottom cup 10, so that accidents caused by gas leakage of the bottom cup 10 are avoided or reduced. At the same time, the provision of the pressure relief cavity 303 also reduces the overall weight of the bottom cup 10. For easy installation and cleaning, the first channel portion 113 is provided with a pressure release chamber 303, that is, the upper surface of the bottom cup cover 211 is a flat plane. Pressure relief cavity 303 is spaced from first groove 1131.

In order to increase the area of the fire hole 32 and improve the injection capacity of the fire hole 32, the root of the fire hole 32 is arc-shaped, so that the processing is also convenient. To improve the stability of the flame delivery of the flame thrower 30, the flame thrower 30 comprises a side wall 301 enclosing a gas mixing chamber 31. A plurality of spaced fire holes 32 are formed in the side face of the side wall 301, and a fire groove 302 is formed in the top face of the side wall 301 between two adjacent fire holes 32. The fire groove 302 communicates the gas mixing chamber 31 with the adjacent two fire holes 32. Further, when the flame groove 302 is provided in a T shape, the flame propagation stability of the flame thrower 30 is improved. The specific structure of the flame thrower 30 will be further described below.

The torch 30 comprises an outer annular cavity 33, an inner annular cavity 34, two first connecting portions 35, a second connecting portion 36 and a flow guiding surface 37. The outer annular cavity 33 is spaced around the inner annular cavity 34. The gas mixing chamber 31 includes an outer gas mixing chamber 311 and an inner gas mixing chamber 312. The outer ring cavity 33 is provided with an outer gas mixing chamber 311. The inner annular cavity 34 defines an inner gas mixing chamber 312. The fire holes 32 include an outer ring fire hole 321 and an inner ring fire hole 322. The outer ring fire holes 321 surround the inner ring fire holes 322. The outer ring flame holes 321 communicate with the outer gas mixing chamber 311. The inner ring flame holes 322 communicate with the internal combustion gas mixing chamber 312.

Both the outer gas mixing chamber 311 and the inner gas mixing chamber 312 are supplied with air from the injection passage 101. Referring to fig. 11, the burner 100 is provided with a second secondary air passage 341 penetrating the middle of the inner annular chamber 34. The second secondary air passage 341 communicates with the first secondary air passage 115. Thus, the secondary air intake capability can be ensured. The outer gas mixing chamber 311 is communicated with the outer ring gas outlet 1141 and the outer ring fire hole 321. The inner gas mixing chamber 312 communicates with the inner ring gas outlet 1142 and the inner ring fire hole 322.

In the case of intake, referring to fig. 8-11, the fuel gas may sequentially enter the first channel 211 and the second channel 212 of the intake portion 21 (as indicated by the dashed arrows in fig. 5). The fuel gas may then be injected from the first nozzle to the primary air chamber 131. Meanwhile, the external air can enter the primary air chamber 131 through the bottom cup through hole 132 and be mixed with the fuel gas in the primary air chamber 131. The mixed gas obtained by mixing the fuel gas and the air enters the injection passage 101, and is injected into the first connection passage 1021 and the second connection passage 1022 (shown by dotted arrows in fig. 9) respectively by the injection passage 101. Then, the mixture gas exiting from the first connecting passage 1021 enters the outer gas mixing chamber 311 through the outer ring gas outlet 1141 for combustion, so as to form an outer ring flame at the outer ring flame holes 321. The mixture exiting the second connecting passage 1022 enters the internal combustion gas mixing chamber 312 via the internal ring gas outlet 1142 for combustion to form an internal ring flame at the internal ring flame holes 322. Ambient air may be admitted by the first and second secondary air passages 115, 341 to replenish the air.

To facilitate installation of the torch 30, a fourth locating structure 342 is formed in the middle of the bottom of the inner annular cavity 34. One of the first positioning structure 1151 and the fourth positioning structure 342 is provided with a positioning slot 343. The other of the first positioning structure 1151 and the fourth positioning structure 342 is provided with a positioning block 344. The positioning block 344 is inserted into the positioning groove 343. In order to improve the stability of the installation, the shape of the positioning block 344 is identical to that of the positioning groove 343, and the positioning block 344 has a plate shape with different thickness. The first positioning structure 1151 is provided with a positioning slot 343, and the fourth positioning structure 342 is provided with a positioning block 344.

The first connecting portion 35 connects the outer ring cavity 33 and the inner ring cavity 34. Each first connection portion 35 is provided with a torch connection channel 351. The flame arrester connection channel 351 communicates with the outer ring air outlet 1141, the inner ring air outlet 1142, and the gas mixing chamber 31. The positioning block 344 is connected between the two first connection portions 35.

The second connecting portion 36 connects the outer ring cavity 33 and the inner ring cavity 34. The flow guiding surface 37 is located at the bottom surface of the second connecting portion 36 and the bottom surface of the inner ring cavity 34. The flow guide surface 37 is inclined upward from the outside of the flame thrower 30 to the second secondary air passage 341 in the inner direction.

In addition, the flame arrester 30 comprises a baffle 38. The flap 38 at least partially shields the pressure relief vent 3031 from the space. Thus, the pressure relief port 3031 can be prevented from being blocked by the scattered sundries. In the illustrated embodiment, the flap 38 is attached to the inside of the outer annular cavity 33. Further, the blocking piece 38 connects the first connection portion 35 and the inner side of the outer ring cavity 33, so that deformation of the blocking piece 38 due to high temperature can be prevented when the burner 100 is operated. The fire cover 40 includes an outer ring fire cover 41 and an inner ring fire cover 42. The outer ring fire cover 41 covers the outer ring cavity 33. The inner ring fire cover 42 covers the inner ring cavity 34. The outer ring fire cover 41 and the inner ring fire cover 42 are spaced apart. The middle part of the inner ring fire cover 42 is provided with an inner ring fire cover through hole 421. The inner ring fire cover through hole 421 communicates with the second secondary air passage 341.

Referring to fig. 27-37, a burner 200 according to another embodiment of the present invention includes a base cup 210, a nozzle holder 220, a flame arrester 230, and a fire cover 240. The nozzle holder 220 is mounted to a side of the bottom cup 210. A torch 230 is provided on the bottom cup 210. The burner 200 of the embodiment of the present invention is applicable to the gas cooker of the embodiment of the present invention.

The base cup 210 includes a base cup lid 211, a base cup base 212, and a primary air cavity 213. The bottom cup cover 211 is mounted on the bottom cup base 212, and the connection manner between the bottom cup cover 211 and the bottom cup base 212 can refer to the burner 100 according to the above embodiment of the present invention. The primary air cavity 213 is protruding from a side of at least one of the bottom cup cover 211 and the bottom cup base 212. The primary air cavity 213 may be provided in a manner similar to that of the burner 100 according to the above embodiment of the present invention.

The bottom cup 210 is provided with a first injection passage 201 having a venturi effect. The bottom cup 210 has a connecting channel 202 formed therein. The connecting channel 202 has a guiding effect on the fuel gas. The connection passage 202 may be provided in a manner referred to in the burner 100 of the above embodiment of the present invention.

The bottom cup cover 211 includes a top wall 2111, a first mounting wall 2112, and a first channel portion 2113. The bottom cup cover 211 is formed with a first engagement surface 2110. The bottom cup cover 211 is provided with a cover attachment slot 2116. The cover connection groove 2116 is located between the first channel portion 2113 and the first mounting wall 2112.

The top wall 2111 is provided with an air outlet 2114. The first mounting wall 2112 is provided protruding from the top wall 2111. The flame thrower 230 is mounted on the top wall 2111. The connecting channel 202 connects the air outlet end of the first injection channel 201 with the air outlet 2114. The first channel portion 2113 is provided with a first groove 21131.

The base cup housing 212 includes a bottom wall 2121, a second mounting wall 2122, and a second channel portion 2123. An end surface of the first mounting wall 2112 meets a top surface of the bottom wall 2121. The second mounting wall 2122 is provided protruding from the bottom wall 2121. The top wall 2111 and the bottom wall 2121 are opposite. The bottom wall 2121 is opposite the first engagement surface 2110. The base cup body 212 is formed with a first mounting groove 2124. Specifically, the bottom wall 2121 and the second mounting wall 2122 are formed together with a first mounting groove 2124. The first mounting wall 2112 is at least partially nested in the first mounting groove 2124 and at least partially in overlapping engagement with the second mounting wall 2122.

The bottom wall 2121 is provided with a bottom wall connecting groove 21211. The cover attachment channel 2116 and the bottom wall attachment channel 21211 cooperate to form an attachment channel 2102. The top surface of the bottom wall 2121 is formed with a second engagement surface 2210. The second mounting wall 2122 surrounds the second engagement surface 2210. The first engagement surface 2110 and the second engagement surface 2210 are engaged. At least one of the first bonding surface 2110 and the second bonding surface 2210 is processed using a finish machining process. Thus, the sealing effect is better. The manner in which the first engagement surface 2110 and the second engagement surface 2210 are engaged may be referred to as the burner 100 of the above-described embodiment of the present invention.

The second channel portion 2123 is located at the bottom of the first mounting groove 2124. The first channel portion 2113 and the second channel portion 2123 are connected. The second mounting wall 2122 surrounds the second channel portion 2123. The second channel portion 2123 is provided with a second groove 2231. The first recess 21131 and the second recess 2231 together form the first injection passage 201. The first injection passage 201 is formed in a manner specifically referred to as the injection passage 101 in the burner 100 according to the above embodiment of the present invention.

The primary air cavity 213 is open to a primary air cavity 2131 which communicates with the first injection passage 201. The primary air cavity 213 includes a first cavity portion 2133 and a second cavity portion 2134. First cavity portion 2133 projects from a side edge of bottom cup cover 211. The first cavity portion 2133 is formed with a first mating groove 21331. The second cavity portion 2134 protrudes from a sidewall of the base cup housing 212. The second cavity portion 2134 is formed with a second mating groove 21341. The first mating groove 21331 and the second mating groove 21341 together form a primary air cavity 2131.

The first cavity portion 2133 comprises a ring 2135 and a first connecting wall 2136. Ring 2135 projects from the side of bottom cup cover 211. The first connecting wall 2136 connects the sides of the ring 2135. Ring 2135 is positioned between the first connecting wall and a side edge of bottom cup lid 211. The first connecting wall 2136 surrounds the first mating groove 21331. The first connecting wall 2136 is opposite the air inlet of the first injection passage 201. The ring 2135 has an opening communicating with the first mating groove 21331.

The second cavity portion 2134 includes a second connecting wall 2137. The second connecting wall 2137 is provided with a mounting opening 21371. The second connecting wall 2137 surrounds the second mating groove 21341. The mounting opening 21371 communicates with the second mating groove 21341. The first connecting wall 2136 is mounted to the mounting opening 21371 to cooperatively connect with the second connecting wall 2137. Wherein, the plane shape of the annular part 2135 is arc-shaped, and the plane shape of the second cavity part 2134 is arc-shaped.

The nozzle base 220 is provided with a first air inlet channel 221 and a second air inlet channel 222. The air outlet of the first air inlet passage 221 is fitted with a second nozzle (not shown). The second nozzle is opposite the first injection passage 201. An inner ring air inlet pipe 270 is connected to an air outlet of the second air inlet passage 222. A third nozzle 271 is mounted at the outlet of the inner ring air inlet pipe 270. The material of the inner ring air inlet pipe 270 is different from that of the bottom cup 210. In this way, the inner ring air inlet pipe 270 is connected with the air outlet of the second air inlet channel 26 and the third nozzle 271, and the inner ring air inlet pipe 270 is not required to be manufactured by adopting a core pulling process, so that the processing steps can be reduced, defects of the inner ring air inlet pipe 270 are not easy to occur, and the inner ring air inlet pipe 270 has better sealing performance. The inner ring air inlet pipe 270 may be made of stainless steel pipe.

It should be noted that the inner ring air inlet pipe 270 may be cast with the bottom cup 210. The nozzle holder 220 is mounted to the first connecting wall 2136. The nozzle holder 220 includes a third air inlet pipe 223 and a fourth air inlet pipe 224. The third intake pipe 223 is provided with a first intake passage 221. The fourth intake pipe 224 is provided with a second intake passage 222. One end of the inner ring air inlet pipe 270 is fixed on the fourth air inlet pipe 224, and the other end of the inner ring air inlet pipe is fixedly connected with the third nozzle 271 by penetrating the first connecting wall 2136, the annular piece 2135 and the bottom cup cover 211.

The flame thrower 230 is mounted to the top wall 2111. The flame thrower 230 is formed with an outer ring flame hole 2301 and an inner ring flame hole 2302. The mounting of the flame arrester 30 on the bottom cup 210 may refer to the burner 100 of the above-described embodiment of the present invention, for example, the flame arrester 230 and the bottom cup 210 may be eccentrically disposed. The outer ring fire holes 2301 may be structured and arranged in the manner described above with reference to the burner 100 according to the above embodiment of the present invention. The inner ring fire holes 2302 may be structured and arranged in the manner described above with reference to the burner 100 according to the above embodiment of the present invention.

The torch 230 includes an outer annular cavity 233 and an inner annular cavity 234. The outer ring cavity 233 is spaced around the inner ring cavity 234. The outer ring cavity 233 is provided with an outer gas mixing chamber 2331. The outer ring fire holes 2301 communicate with the outer gas mixing chamber 2331. The top wall 2111 is provided with an air outlet 2114 which is an outer ring air outlet. The outlet 2114 communicates with the outer gas mixing chamber 2331 and the first injection passage 201. The inner annular chamber 234 defines an inner gas mixing chamber 2341. The inner ring fire holes 2302 communicate with the internal combustion gas mixing chamber 2341. The mixture of the external gas mixing chamber 2331 is supplied from the first injection passage 201. The inner annular cavity 234 defines a second injection passage 2340. The second injection passage 2340 is opposite to the third nozzle 271 mounted to the air outlet of the inner ring air intake pipe 270. The mixed gas of the internal gas mixing chamber 2341 is supplied from the second injection passage 2340. In this way, the inner ring air inlet pipe 270 is connected with the air outlet of the second air inlet channel 222 and the third nozzle 271, and the inner ring air inlet pipe 270 is not required to be manufactured by adopting a core pulling process, so that the processing steps can be reduced, defects of the inner ring air inlet pipe are not easy to occur, the inner ring air inlet pipe has better sealing performance, and then the normal air supply of the burner 200 can be ensured.

At the time of intake, the fuel gas may enter the first intake passage 221 and the second intake passage 222, respectively. Then, the fuel gas in the first intake passage 221 is ejected from the second nozzle to the primary air chamber 2131. The air and the fuel gas are mixed into a mixed gas in the primary air chamber 2131, enter the injection channel 201, and are respectively injected to the connecting channels 202 by the injection channel 201. The mixture exiting the connecting passage 202 then enters the outer gas mixing chamber 2331 for combustion via the gas outlet 2114. Meanwhile, the fuel gas in the second intake passage 222 is ejected from the third nozzle 271 via the inner ring intake pipe 270, and mixed with air. The mixed gas after the fuel gas and the air are mixed enters the second injection channel 2340, and is injected to the internal combustion gas mixing cavity 2341 by the second injection channel 2340 for combustion.

The structure of the flame thrower 230 may refer to the burner 100 of the above-described embodiment of the present invention.

Fire cover 240 includes an outer ring fire cover 241 and an inner ring fire cover 242. The outer ring fire cover 241 covers the outer ring cavity 233. The inner ring fire cover 242 covers the inner ring cavity 234. The outer ring fire cover 241 and the inner ring fire cover 242 are spaced apart. The middle of the inner ring fire cover 242 is of a solid structure.

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 invention. 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 invention 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A base cup for a burner, comprising:

the bottom cup cover body comprises a top wall and a first channel part, wherein the top wall is provided with an air outlet, the first channel part is convexly arranged on the top wall, the first channel part is provided with a first groove, and the first channel part is provided with first channel joint surfaces positioned on two sides of the first groove;

the bottom cup seat body is provided with a mounting groove, the bottom cup cover body is mounted on the bottom cup seat body and is partially positioned in the mounting groove, the bottom cup seat body comprises a second channel part positioned at the bottom of the mounting groove, the second channel part is provided with a second groove, the second channel part is provided with second channel joint surfaces positioned at two sides of the second groove, at least one of the first channel joint surfaces and the second channel joint surfaces is processed by adopting a finish turning process, the first channel joint surfaces and the second channel joint surfaces are joined, the first groove and the second groove jointly form an injection channel with Venturi effect, and the injection channel is communicated with the air outlet; the injection channel is arranged approximately horizontally;

The bottom cup cover body comprises a first mounting wall, the first mounting wall is convexly arranged on the top wall, and the first mounting wall surrounds the first channel part;

the bottom cup base body comprises a bottom wall and a second mounting wall, the second mounting wall is convexly arranged on the bottom wall, the top wall is opposite to the bottom wall, the bottom wall and the second mounting wall jointly form the mounting groove, and the first mounting wall is at least partially embedded into the mounting groove and is at least partially overlapped and jointed with the second mounting wall;

the bottom cup cover body is provided with a cover body connecting groove, the first channel part is provided with a first connecting joint surface, the first channel joint surface and the end surface of the first mounting wall are coplanar, and the cover body connecting groove is positioned between the first channel part and the first mounting wall; the bottom wall is provided with a bottom wall connecting groove, the top surface of the bottom wall is provided with a second connecting joint surface, the second channel part is provided with a third connecting joint surface, the second connecting joint surface and the third connecting joint surface surround the bottom wall connecting groove, the second connecting joint surface, the second channel joint surface and the third connecting joint surface are coplanar, the first connecting joint surface and the third connecting joint surface are jointed, the end surface of the first mounting wall is jointed with the second connecting joint surface, the cover connecting groove and the bottom wall connecting groove jointly form a connecting channel, and the connecting channel is communicated with the injection channel and the air outlet.

2. The base cup of a burner of claim 1, wherein the end surface of the first mounting wall is joined to the top surface of the bottom wall, and wherein the junction of the end surface of the first mounting wall and the top surface of the bottom wall is finished by a finish turning process.

3. The base cup of claim 1, wherein a first connecting channel is formed in the base cup, the air outlet comprises an outer ring air outlet, and the first connecting channel connects an air outlet end of the injection channel and the outer ring air outlet.

4. The bottom cup of the burner of claim 3, wherein the outer ring air outlet comprises a first outer ring air outlet and a second outer ring air outlet which are arranged at intervals, the first connecting channel comprises a first sub-connecting channel and a second sub-connecting channel, the first sub-connecting channel and the second sub-connecting channel are respectively connected to two sides of the air outlet end of the injection channel, the first sub-connecting channel is communicated with the first outer ring air outlet and the injection channel, the first sub-connecting channel is in arc connection with the air outlet end of the injection channel, the second sub-connecting channel is communicated with the second outer ring air outlet and the injection channel, and the second sub-connecting channel is in arc connection with the air outlet end of the injection channel.

5. The base cup of a burner of claim 1, wherein the base cup is provided with a primary air cavity protruding from a side of at least one of the base cup cover and the base cup, the primary air cavity being provided with a primary air cavity communicating with the injection passage.

6. The base cup of a burner of claim 5 wherein at least one of said base cup cover and said base cup has a first center and said primary air cavity has a second center, said first center being disposed eccentrically to said second center.

7. A burner comprising a flame thrower and a base cup of the burner of any one of claims 1-6, the flame thrower being disposed on the base cup cover and in communication with the air outlet.

8. The burner of claim 7, wherein at least one of the bowl cover and the bowl base has a first center, and the flame thrower has a third center, the third center being disposed off-center from the first center.

9. A gas hob, characterized in, that it comprises a burner according to any one of the claims 7-8.