WO2016145744A1

WO2016145744A1 - Burner

Info

Publication number: WO2016145744A1
Application number: PCT/CN2015/082050
Authority: WO
Inventors: 王成; 方松青; 王光武; 施国生
Original assignee: 广东美的厨房电器制造有限公司
Priority date: 2015-03-13
Filing date: 2015-06-23
Publication date: 2016-09-22

Abstract

A burner (10) comprising a base cup (12), a flame splitter (14), and a flame cover (16). The base cup (12) comprises an inner ring nozzle (122) and outer ring nozzles (123) in communication with an air inlet channel (121) and facing upwards. An arrival cavity (124) in communication with the inner ring nozzle (122) and the outer ring nozzles (123) is formed on the base cup (12). The flame splitter (14) is arranged on the base cup (12) and comprises an inner ring Venturi tube (141) opposite the inner ring nozzle (122) and outer ring Venturi tubes (142) opposite the outer ring nozzles (123). The flame splitter (14) is separated from the base cup (12) to form a gap (13). The flame splitter (14) forms an inner ring mixing cavity (143) in communication with the inner ring Venturi tube (141) and an outer ring mixing cavity (144) in communication with the outer ring Venturi tubes (142) and separated from the inner ring mixing cavity (143). Inner ring groove openings (146) and outer ring groove openings (146) are formed upon the flame splitter (14).

Description

burner

Technical field

The invention relates to a gas stove technology, in particular to a burner for a gas stove.

Background technique

The chambers of the inner and outer ring flames of the burners of the existing gas stoves are generally in communication, and the mixed gas flows through each other, so that the inner and outer ring flames interfere with each other.

Summary of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the invention needs to provide a burner.

A burner according to a preferred embodiment of the present invention includes:

a bottom cup, the bottom cup is formed with an intake passage, the bottom cup includes an inner ring nozzle and an outer ring nozzle communicating with the intake passage, and the bottom cup is formed with the inner ring nozzle and the An access chamber in which the outer ring nozzle communicates; and

a firearm disposed on the bottom cup, the firearm including an inner ring venturi opposite the inner ring nozzle and an outer ring venturi opposite the outer ring nozzle, the firearm and the firearm The bottom cups are spaced apart to form a slit to allow primary air to pass from the gap through the arrival chamber into the inner ring venturi and the outer ring venturi and from the inner ring nozzle and the outer ring The nozzles are respectively injected into the gas mixture of the inner ring venturi and the outer ring venturi to form a mixed gas; the fire extinguisher forms an inner ring mixing cavity communicating with the inner ring venturi and the outer An outer ring mixing chamber connected to the inner venturi mixing chamber and separated from the inner ring mixing chamber; the fire igniter is formed with an inner ring notch communicating with the inner ring mixing chamber and communicating with the outer ring mixing chamber Ring notch

a fire cover disposed on the fire extinguisher and covering the inner ring mixing chamber and the outer ring mixing chamber, the fire cover and the inner ring notch jointly defining an outlet of the mixed gas to form an inner ring flame The fire cover and the outer ring notch together define an outlet of the mixed gas to form an outer ring flame.

In certain embodiments, the inlet passage includes a single passage, and the inner ring nozzle is in communication with the outer ring nozzle and passage.

In some embodiments, the intake passage includes a central portion and a branch portion extending radially outward from the central portion, the inner ring nozzle being disposed at the central portion, each of the branch portions being disposed The outer ring nozzle.

In some embodiments, the intake passage is in a line shape, the number of the branch portions is two, and the central portion of the intake passage is the center portion, and both ends of the intake passage are The branching portion.

In some embodiments, the intake passage is in a shape, and the number of the branches is one, the intake One end of the passage is the center portion, and the other end of the intake passage is the branch portion.

In some embodiments, the intake passage is of a cross type, the number of the branch portions is four, a middle portion of the intake passage is the center portion, and four ends of the intake passage are Branch.

In some embodiments, the bottom cup includes an intake pipe and an inner ring cup and an outer ring cup disposed on the intake pipe; the intake passage is formed in the intake pipe, and the arrival chamber is formed In the inner ring cup and the outer ring cup; the inner ring nozzle and the outer ring nozzle are disposed on the intake pipe and penetrate the intake pipe, and the inner ring nozzle is located in the inner ring The outer ring nozzle is disposed in the outer ring cup in the cup.

In certain embodiments, the inner ring cup and the outer ring cup are in communication.

In certain embodiments, the inner ring nozzle, the outer ring nozzle, the inner ring venturi, and the outer ring venturi are vertically disposed.

In some embodiments, the bottom cup includes a flange extending outwardly from the top, the flange for attaching to a bottom surface of the gas cooktop; the bottom cup including a bottom skirt extending upward from the top, The bottom skirt is disposed around the arrival chamber.

In certain embodiments, the firearm is substantially circular and includes a partition, the partition including a substantially circular inner ring portion, a substantially annular shape, and an outer ring surrounding the inner ring portion And connecting the inner ring portion and the outer ring portion; the outer ring portion is formed with an inwardly extending island portion; the inner ring venturi is disposed at the inner ring portion and penetrates the inner ring portion; The outer ring venturi is disposed at the island portion and penetrates the island portion; the firearm includes an upper skirt extending downward from an edge of the connecting portion and an edge of the island portion; The skirt is shaped to fit the lower skirt and spaced apart to form the slit.

In some embodiments, the upper skirt is similar in shape to the lower skirt, the upper skirt being sized larger than the lower skirt.

In certain embodiments, the firearm is substantially circular and includes a partition, the partition including a substantially circular inner ring portion, a substantially annular shape, and an outer ring surrounding the inner ring portion And connecting the inner ring portion and the outer ring portion; the outer ring portion is formed with an inwardly extending island portion; the inner ring venturi is disposed at the inner ring portion and penetrates the inner ring portion; The outer ring venturi is disposed at the island portion and penetrates the island portion; the firearm includes an inner ring wall extending upward from an edge of the inner ring portion; the inner ring mixing chamber is formed in the The inner ring notch is formed at a top of the inner ring wall; the firearm includes an inner and outer ring wall and an outer outer ring wall extending upward from an inner and outer edge of the outer ring portion, the outer portion A ring mixing chamber is formed between the inner and outer ring walls and the outer and outer ring walls, and the outer ring groove is formed at the top of the outer and outer ring walls.

In certain embodiments, the fire cover includes an inner fire cover and an outer fire cover that are separated from one another.

In some embodiments, the intake passage includes an inner sub-channel and an outer sub-channel that are separated from each other, the inner ring nozzle being coupled to the inner sub-channel, the outer ring nozzle being in communication with the outer sub-channel.

In some embodiments, the outer ring mixing chamber includes a plurality of mutually separated sectors, each of the sectors being provided with the outer ring venturi and the outer ring nozzle, the outer sub-channel including a plurality of mutually separated sub-channels, each of the sub-channels being in communication with the outer ring nozzle of the corresponding sector.

In certain embodiments, the outer ring mixing chamber includes a plurality of mutually spaced sectors, each of the sectors providing the outer ring venturi and the outer ring nozzle.

The inner ring mixing chamber and the outer ring mixing chamber of the burner according to the present invention are mutually separated by the inner ring venturi tube and the outer ring venturi tube, so that the inner ring flame and the outer ring flame do not interfere with each other.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a perspective view of a burner in accordance with a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of the burner of Figure 1 taken along line II-II.

3 is a perspective view of the bottom cup of the burner of FIG. 1.

4 is a perspective view of the firearm of the burner of FIG. 1.

Figure 5 is a perspective view of another perspective view of the firearm of the burner of Figure 1.

Figure 6 is a schematic cross-sectional view of a burner according to another embodiment of the present invention.

Fig. 7 is a schematic perspective view of a fire extinguisher of a burner in another embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientations of "post", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the present invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention. Moreover, the terms "first" and "second" 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, features defining "first" and "second" may include one explicitly or implicitly. One or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly above and above the second feature, or merely the first feature level being less than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the invention. In addition, the present invention may be repeated with reference to the numerals and/or reference numerals in the various examples, which are for the purpose of simplicity and clarity, and do not indicate the relationship between the various embodiments and/or arrangements discussed. Moreover, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the use of other processes and/or the use of other materials.

Referring to FIGS. 1 and 2, a burner 10 of a preferred embodiment of the present invention includes a bottom cup 12, a firearm 14 and a fire cover 16. The bottom cup 12 is formed with an intake passage 121, and the bottom cup 12 includes an inner ring nozzle 122 and an outer ring nozzle 123 communicating with the intake passage 121, and the bottom cup 12 is formed to communicate with the inner ring nozzle 122 and the outer ring nozzle 123. Arrived in the chamber 124. The fire extinguisher 14 is disposed on the bottom cup 12, and the fire extinguisher 14 includes an inner ring venturi 141 opposite to the inner ring nozzle 122 and an outer ring venturi 142 opposite the outer ring nozzle 123, and the fire extinguisher 14 is spaced from the bottom cup 12 Provided to form the slit 13 to allow the primary air PA to flow from the slit 13 to the chamber 124 into the inner ring venturi 141 and the outer ring venturi 142 and from the inner ring nozzle 122 and the outer ring nozzle 123 into the inner ring venturi respectively The gas G of the tube 141 and the outer ring venturi 142 is mixed to form a mixed gas M. The firearmer 14 forms an inner ring mixing chamber 143 that communicates with the inner ring venturi 141 and an outer ring mixing chamber 144 that communicates with the outer ring venturi tube 142 and is separated from the inner ring mixing chamber 143. The firearm 14 is formed with a plurality of inner ring notches 145 that communicate with the inner ring mixing chamber 143 and a plurality of outer ring notches 146 that communicate with the outer ring mixing chamber 144. The fire cover 16 is disposed on the fire extinguisher 14 and covers the inner ring mixing chamber 143 and the outer ring mixing chamber 144. The fire cover 16 and the inner ring notch 145 together define an outlet of the mixed gas M to form an inner ring flame, the fire cover 16 and the outer The ring notches 146 collectively define an outlet of the mixed gas M to form an outer ring flame.

The inner ring mixing chamber 143 and the outer ring mixing chamber 144 of the combustor 10 according to the present invention are separated from each other by the inner ring venturi tube 141 and the outer ring venturi tube 142 for supplying the mixed gas M, thereby generating an inner ring flame and an outer ring. The flames will not interfere with each other.

The intake passage 121 may include a single passage. Both the inner ring nozzle 122 and the outer ring nozzle 123 are in communication with the same passage. Thus, it is only necessary to provide a gas source to generate the inner ring flame and the outer ring flame, and in addition, facilitate the manufacture of the bottom cup 12.

The intake passage 121 includes a central portion 1211 and a branch portion 1212 extending radially outward from the central portion 1211. The inner ring nozzle 122 is disposed on the central portion 1211, and each branch portion 1212 is provided with an outer ring nozzle 122. With this arrangement, the outer ring nozzle 122 sets the outer ring mixing chamber 144 and supplies the mixed gas M to the outer ring mixing chamber 144. Therefore, the more the number of the branch portions 1212, the more uniform the mixed gas M supplied to the outer ring mixing chamber 144. . Of course, the manufacture of the bottom cup 12 will be more complicated. Therefore, the number of branch portions 1212 can be set as needed. For example, the branching portions 1212 are one, two or four.

Referring to FIG. 3 , the bottom cup 12 of the present embodiment includes an intake pipe 125 and an inner ring cup 126 and an outer ring cup 127 disposed on the intake pipe 125 . The intake passage 121 is formed in the intake pipe 125, and the reaching chamber 124 is formed in the inner ring cup 126 and the outer ring cup 127. The inner ring nozzle 122 and the outer ring nozzle 123 are disposed on the intake pipe 145 and penetrate the intake pipe 145. The inner ring nozzle 122 is located in the inner ring cup 126, and the outer ring cup 127 is provided with an outer ring nozzle 123.

The intake pipe 125 is a straight pipe closed at one end. That is to say, the intake pipe 125 is in a line shape. Correspondingly, the intake passage 121 is also in a single shape. The central portion of the intake passage 121 is the central portion 1211. In the present embodiment, the number of the branch portions 1212 is two, and both ends of the intake passage 121 are the branch portions 1212. That is, the inner ring nozzle 122 is disposed at the center of the intake pipe 125, and the outer ring nozzle 123 is disposed at both ends of the intake pipe 125. With this arrangement, on the one hand, the intake air is unobstructed, the intake efficiency can be improved, and on the other hand, the mixed gas M to the outer ring mixing chamber 144 is relatively uniform.

The inner ring cup 126 has a substantially round bowl shape, and the outer ring cup 127 has a substantially triangular bowl shape. Of course, the shape of the inner ring cup 126 and the outer ring cup 127 is not limited to the embodiment, but may be changed as needed in other embodiments.

Corresponding to the arrangement of the intake pipe 125, the inner ring nozzle 122 and the outer ring nozzle 123, the number of inner ring cups 126 is one, the number of outer ring cups 127 is two, and the inner ring cup 126 is disposed in the middle of the intake pipe 125, and the outer ring The cups 127 are disposed on both sides of the inner ring cup 126.

In the present embodiment, the inner ring cup 126 is in communication with the outer ring cup 127. Thus, on the one hand, the primary air PA is complemented between the inner ring venturi tube 141 and the outer ring venturi tube 142, and on the other hand, the bottom cup 12 can be easily formed. Of course, in other embodiments, the inner ring cup 126 and the outer ring cup 127 may also be spaced apart.

In the present embodiment, the inner ring nozzle 122 and the outer ring nozzle 123 are vertically disposed, and correspondingly, the inner ring venturi tube 141 and the outer ring venturi tube 142 are also vertically disposed, and the arrangement is improved because the gas density is low. The efficiency of the ring nozzle 122 and the outer ring nozzle 123 injecting the inner ring venturi tube 141 and the outer ring venturi tube 142. Of course, the arrangement of the inner ring nozzle 122 and the outer ring nozzle 123 is not limited to the embodiment, but in other embodiments, it may be inclined according to requirements. Correspondingly, the inner ring venturi 141 and the outer ring venturi tube 142 are also arranged obliquely.

It can be understood that the bottom cup 12 is not limited to the embodiment, for example:

In some embodiments, the number of branch portions 1212 is one, one end of the intake passage 1211 is a central portion 1211, and the other end of the intake passage 121 is a branch portion 1212. Correspondingly, only one outer ring cup 127 is required. In this way, the bottom cup 12 is formed and the cost can be reduced.

In some embodiments, the intake pipe 125 may have other shapes, such as a cross shape, in which case the intake passage 121 is of a cross type, the number of the branch portions 1212 is four, and the middle portion of the intake passage 121 is a center portion. 1211, the four ends of the intake passage 121 are branch portions 1212. Correspondingly, four outer ring cups 127 respectively disposed at the four branch portions 1212 are required. In this way, the uniformity of the distribution of the mixture M of the outer ring mixing chamber 144 can be improved.

In this embodiment, the bottom cup 12 further includes a flange 128 extending outward from the top for attaching to the bottom surface of the gas cooktop (not shown), such that the fastener can be fixed to the gas stove by the fastener. On the stage. The bottom cup 12 also includes a bottom skirt 129 that extends upwardly from the top. That is, the bottom skirt 129 is disposed around the access chamber 124. In this way, liquid can be prevented from flowing into the chamber 124.

Referring to Figures 4-5, the firearm 14 is substantially circular and includes a partition 147. The partition plate 147 includes a substantially circular inner ring portion 1471, an outer annular ring 1472 that is substantially annular and surrounds the inner ring portion 1471, and a connecting portion 1473 that connects the inner ring portion 1471 and the outer ring portion 1472. The outer ring portion 1472 is formed with an island portion 1474 that extends inward. The inner ring venturi 141 is disposed in the inner ring portion 1471 and penetrates the inner ring portion 1471. The outer ring venturi 142 is disposed at the island portion 1474 and extends through the island portion 1474.

That is to say, in the present embodiment, the connecting portion 1473 connects the two ends of the inner ring portion 1471 and the outer ring portion 1472 in diameter. That is, the connecting portion 1473 is bridged to the outer ring portion 1472 in the diametrical direction of the outer ring portion 1472, and the inner ring portion 1471 is disposed at the center of the connecting portion 1473. In this way, the connection is firm.

Of course, the fire extinguisher 14 is not limited to the present embodiment, and may be changed as needed in other embodiments. For example, the connecting portion 1473 may connect only one end of the inner ring portion 1471 and one end of the outer ring portion 1472. In this way, material can be saved.

In the present embodiment, the number of the island portions 1474 is two, and is provided at both ends of the connecting portion 1473. Of course, in other embodiments, other numbers of island portions 1474 may be provided as needed, and the positional relationship between the island portion 1474 and the connecting portion 1473 may be changed, and is not limited to the embodiment.

The island portion 1472 is formed with an arcuate side 1475 inwardly. The firearm 14 also includes an upper skirt 148 that extends downwardly from the edge of the joint and the arcuate edge 1475. The upper skirt 148 is shaped and spaced apart from the lower skirt 129 to form a passage for the primary air PA (i.e., the slit 13). Specifically, the upper skirt 148 is similar in shape to the lower skirt 129, but the upper skirt 148 is slightly larger in size than the lower skirt 129, thus preventing liquid from being sputtered into the interior while allowing primary air PA to enter.

The firearmer 14 also includes a first positioning portion 149 that extends downwardly from the outer ring portion 1472. In the present embodiment, the first positioning portion 149 is four positioning legs that are distributed at both ends of the upper skirt 148 and that cooperate with the lower skirt 149. When the fire extinguisher 14 is disposed on the bottom cup 12, four positioning legs are caught on the outer edge of the lower skirt 129 to support and position the fire extinguisher 14 on the bottom cup 12.

The firearm 14 also includes an inner ring wall 14a extending upward from the edge of the inner ring portion 1471. The inner ring mixing chamber 143 is formed in the inner ring wall 14a, and the inner ring notches 145 are formed on the top of the inner ring wall 14a and are equally spaced. The firearm 14 further includes an inner and outer ring wall 14b and an outer and outer ring wall 14c extending upward from the inner and outer edges of the outer ring portion 1472. The outer ring mixing chamber 144 is formed between the inner and outer ring walls 14b and the outer and outer ring walls 14c, and the outer ring groove Ports 146 are formed on the top of the outer and outer annular walls 14c and are equally spaced, and the outer ring notches 146 can be of both depth and phase and disposed to create the desired outer ring flame.

In the present embodiment, the inner and outer annular walls 14c are also formed with outer ring notches 146a, that is, the burner 10 can form a three-ring flame, however, in other embodiments, the outer ring operation 146a on the inner and outer annular walls 14c. It can be omitted, that is, the burner 10 only retains the inner and outer two-ring flames.

The fire extinguisher 14 further includes a second positioning portion 14d extending upward from the edge of the connecting portion 1473 for positioning the fire cover 16.

The fire cover 16 includes an inner fire cover 161 and an outer fire cover 162 that are separated from each other. The shape of the inner fire cover 161 is matched with the shape of the opening of the inner ring mixing chamber 143 and is used to cover the inner ring mixing chamber 161. The outer fire cover 162 has a shape that cooperates with the shape of the opening of the outer ring mixing chamber 144 and serves to cover the outer ring mixing chamber 162. As such, the mixed gas M is restricted from escaping from the inner ring notch 145 and the outer ring notch 146.

Referring to FIG. 6, a burner 10a according to another embodiment of the present invention is substantially the same as the burner 10. However, the intake passage 121' of the burner 10' of the present embodiment includes inner sub-channels 1211' and outer sub-channels that are separated from each other. 1212', the inner ring nozzle 122 is coupled to the inner sub-channel 1211', and the outer ring nozzle 123 is in communication with the outer sub-channel 1212'. That is to say, the inner ring nozzle 122 and the outer ring nozzle 123 can supply air independently, because the inner ring mixing chamber 143 and the outer ring mixing strong chamber 144 are independently supplied by the inner ring nozzle 122 and the outer ring nozzle 123, respectively. Controlling the on and off and the size of the gas G entering the inner sub-channel 1211 and the outer sub-channel 1212 can independently control the switch and size of the inner ring flame and the outer ring flame.

Referring to Figure 7, the firearm 14' of the burner of another embodiment of the present invention is substantially identical to the firearm 14, but the partition 147 of the firearm 14' also extends upwardly from the partition plate 148 to join the outer ring mixing chamber 144. 'Partition. Thus, the outer ring mixing chamber 144' includes a plurality of mutually separated sectors 1441', and each of the sectors 1441' is provided with an outer ring venturi 144' and an outer ring nozzle 123. Thus, the mixed gas M between the sectors 1441' is also different and does not interfere with each other.

In other embodiments, the outer sub-channel 1212' further includes a plurality of mutually separated sub-channels, each sub-channel being in communication with the outer ring nozzle 123 of the corresponding sector 1441'. Thus, by controlling access to each of the outer sub-channels 1212 The on and off and size of the gas G can independently control the switch and size of the outer ring flame corresponding to each sector 1441'.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the embodiments or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A burner characterized by comprising:

a bottom cup, the bottom cup is formed with an intake passage, the bottom cup includes an inner ring nozzle and an outer ring nozzle communicating with the intake passage, and the bottom cup is formed with the inner ring nozzle and the An access chamber in which the outer ring nozzle communicates;

a firearm disposed on the bottom cup, the firearm including an inner ring venturi opposite the inner ring nozzle and an outer ring venturi opposite the outer ring nozzle, the firearm and the firearm The bottom cups are spaced apart to form a slit to allow primary air to pass from the gap through the arrival chamber into the inner ring venturi and the outer ring venturi, and from the inner ring nozzle and the The outer ring nozzles are respectively injected into the gas mixture of the inner ring venturi tube and the outer ring venturi tube to form a mixed gas; the fire extinguisher forms an inner ring mixing chamber and the inner ring communicating with the inner ring venturi tube An outer ring mixing chamber in which the outer ring venturi is connected and separated from the inner ring mixing chamber; the fire extinguisher is formed with an inner ring notch communicating with the inner ring mixing chamber and communicating with the outer ring mixing chamber Outer ring notch; and

a fire cover disposed on the fire extinguisher and covering the inner ring mixing chamber and the outer ring mixing chamber, the fire cover and the inner ring notch jointly defining an outlet of the mixed gas to form an inner ring flame The fire cover and the outer ring notch together define an outlet of the mixed gas to form an outer ring flame.
A burner according to claim 1 wherein said inlet passage includes a single passage, said inner ring nozzle being in communication with said outer ring nozzle and passage.
A burner according to claim 2, wherein said intake passage includes a center portion and a branch portion extending radially outward from said center portion, said inner ring nozzle being disposed at said center portion Each of the branch portions is provided with the outer ring nozzle.
A burner according to claim 3, wherein said intake passage is of a straight shape, said number of said branching portions is two, and said central portion of said intake passage is said central portion, said Both ends of the intake passage are the branch portions.
A burner according to claim 3, wherein said intake passage is in a line shape, said branching portion has one, and one end of said intake passage is said center portion, said The other end of the intake passage is the branch portion.
A burner according to claim 3, wherein said intake passage is of a cross type, said minute The number of the branches is four, the middle portion of the intake passage is the center portion, and the four ends of the intake passage are the branch portions.
The burner according to claim 1, wherein said bottom cup comprises an intake pipe and an inner ring cup and an outer ring cup disposed on said intake pipe; said intake passage being formed in said intake pipe The arrival chamber is formed in the inner ring cup and the outer ring cup; the inner ring nozzle and the outer ring nozzle are disposed on the intake pipe and penetrate the intake pipe, the inner A ring nozzle is located in the inner ring cup, and the outer ring nozzle is disposed in the outer ring cup.
The burner of claim 7 wherein said inner ring cup and said outer ring cup are in communication.
The burner of claim 1 wherein said inner ring nozzle, said outer ring nozzle, said inner ring venturi and said outer ring venturi are vertically disposed.
A burner according to claim 1 wherein said bottom cup includes a flange extending outwardly from the top, said flange being for attachment to a bottom surface of the gas cooktop; said bottom cup including from top to top An extended bottom skirt, the bottom skirt being disposed about the arrival chamber.
A burner according to claim 10, wherein said firearm is substantially circular and includes a partition, said partition including a substantially circular inner ring portion, substantially annular and surrounding An outer ring shape of the inner ring portion and a connecting portion connecting the inner ring portion and the outer ring portion; the outer ring portion is formed with an inwardly extending island portion; and the inner ring venturi is disposed in the inner ring And extending through the inner ring portion; the outer ring venturi is disposed at the island portion and penetrating the island portion; the firearm includes extending downward from an edge of the connecting portion and an edge of the island portion An upper skirt edge; the upper skirt edge is shaped to fit the lower skirt and spaced apart to form the slit.
The burner of claim 11 wherein said upper skirt is similar in shape to said lower skirt, said upper skirt being sized larger than said lower skirt.
A burner according to claim 1 wherein said firearm is substantially circular and includes a partition, said partition including a substantially circular inner ring portion, substantially annular and surrounding An outer ring shape of the inner ring portion and a connecting portion connecting the inner ring portion and the outer ring portion; the outer ring portion is formed with an inwardly extending island portion; and the inner ring venturi is disposed in the inner ring And extending through the inner ring portion; the outer ring venturi is disposed at the island portion and penetrating the island portion; the firearm includes an inner ring wall extending upward from an edge of the inner ring portion; The ring mixing chamber is formed in the In the inner ring wall, the inner ring notch is formed at the top of the inner ring wall; the firearm includes an inner and outer ring wall and an outer outer ring wall extending upward from an inner and outer edge of the outer ring portion, An outer ring mixing chamber is formed between the inner and outer ring walls and the outer outer ring wall, and the outer ring notch is formed at the top of the outer outer ring wall.
A burner according to claim 1 wherein said fire cover comprises an inner fire cover and an outer fire cover that are separated from each other.
A burner according to claim 1, wherein said intake passage includes inner and outer sub-channels separated from each other, said inner ring nozzle being coupled to said inner sub-channel, said outer ring nozzle and said The outer subchannels are connected.
A burner according to claim 15 wherein said outer ring mixing chamber comprises a plurality of mutually spaced sectors, each of said sectors being provided with said outer ring venturi and said outer ring nozzle The outer sub-channel includes a plurality of mutually separated sub-channels, each of the sub-channels being in communication with the outer ring nozzle of the corresponding sector.
The burner of claim 1 wherein said outer ring mixing chamber comprises a plurality of spaced apart sectors, each of said sectors providing said outer ring venturi and said outer ring nozzle.