DESC:Technical Field
[0001] The present disclosure relates to cooktop appliances. More particularly, the present disclosure relates to gas burners for gas burner assemblies used in cooktop appliances.
Background
[0002] Gas burner assemblies are used in cooktop appliances including e.g., range ovens and cooktop appliances built into cabinetry, for example, for heating or cooking an object, such as a cooking utensil and its contents. A typical gas burner assembly includes a burner base, and a gas burner mounted on the burner base. The gas burner includes an annular body defining a central combustion zone and multiple orifices circumferentially arranged around the central combustion zone to allow the passage of a flammable gas mixture toward the central combustion zone.
[0003] Over time, these orifices may become dirty and clogged due to the accumulation of dirt, for example, food particles, debris, oil, and grease, which may reduce the working efficiency and overall performance of the burner assembly. Metallic tools, such as metal brushes or pins, are widely used to dislodge dirt from these orifices. However, dislodging the dirt from each orifice individually is a labor-intensive and time-consuming task. Moreover, repeated poking or scrapping with these metal tools may cause abrasions in the orifices, which may not only reduce the operational life of the burner assembly but also compromise with safety.
Summary of the Invention
[0004] In one aspect, the disclosure relates to a gas burner for a burner assembly of a cooktop appliance. The gas burner includes a first member configured to be coupled to a burner base of the burner assembly, and a second member configured to be coupled with the first member. The first member includes a mating portion. The second member includes an annular surface and a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions. When the first member and the second member are coupled together, the projection portions engage with the mating portion to correspondingly define burner orifices between the depression portions and the mating portion.
[0005] In another aspect, the disclosure is directed to a burner assembly for a cooktop appliance. The burner assembly includes a burner base supported on a body of the cooktop appliance, and a gas burner. The gas burner includes a first member configured to be coupled to the burner base, and a second member configured to be coupled with the first member. The first member includes a mating portion. The second member includes an annular surface and a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions. When the first member and the second member are coupled together, the projection portions engage with the mating portion to correspondingly define burner orifices between the depression portions and the mating portion.
[0006] In yet another aspect, the disclosure relates to a cooktop appliance. The cooktop appliance includes a body, a burner base, and a gas burner. The gas burner includes a first member configured to be coupled to the burner base, and a second member configured to be coupled with the first member. The first member includes a mating portion. The second member includes an annular surface and a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions. When the first member and the second member are coupled together, the projection portions engage with the mating portion to correspondingly define burner orifices between the depression portions and the mating portion.
[0007] In yet another aspect, the disclosure relates to a method of assembling a gas burner of a burner assembly for a cooktop appliance. The method includes using a first member of the gas burner. The first member is configured to be coupled to a burner base of the burner assembly. The first member includes a mating portion. Further, the method includes using a second member of the gas burner. The second member includes an annular surface, and a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions. Furthermore, the method includes causing the second member to be coupled with the first member such that the projection portions of the second member engage with the mating portion of the first member to correspondingly define burner orifices between the depression portions and the mating portion.
Brief Description of the Drawings
[0008] FIG. 1 illustrates a cooktop appliance, in accordance with an embodiment of the present disclosure;
[0009] FIG. 2 illustrates a gas burner of the cooktop appliance, in accordance with an embodiment of the present disclosure;
[0010] FIG. 3 is a perspective top exploded view of the gas burner of FIG. 1;
[0011] FIG. 4 is a perspective bottom exploded view of the gas burner of FIG. 1;
[0012] FIG. 5 is a cross-sectional view of the gas burner of FIG. 1 mounted on a burner base of the cooktop appliance;
[0013] FIG. 6 illustrates a gas burner, in accordance with another embodiment of the present disclosure;
[0014] FIG. 7 is a perspective top exploded view of the gas burner of FIG. 6;
[0015] FIG. 8 illustrates a gas burner, in accordance with yet another embodiment of the present disclosure; and
[0016] FIG. 9 is a perspective top exploded view of the gas burner of FIG. 8.
Detailed Description
[0017] Reference will now be made in detail to specific embodiments or features, examples of which are illustrated in the accompanying drawings. Generally, corresponding reference numbers may be used throughout the drawings to refer to the same or corresponding parts, e.g., 1, 1`, 1``, 101 and 201 could refer to one or more comparable components used in the same and/or different depicted embodiments.
[0018] Referring to FIG. 1, a cooktop appliance 100 is illustrated. The cooktop appliance 100 may be installed in various locations such as in cabinetry in a kitchen, with one or more ovens to form a range appliance, or as a standalone appliance. Thus, the term “cooktop appliance” includes both grill appliances, stove appliances, range appliances, and other appliances that incorporate cooktops.
[0019] The cooktop appliance 100 includes a body 104 and one or more burner assemblies 108. In an exemplary embodiment, as shown in FIG. 1, the body 104 may be a cuboid structure (with one side open) constructed of glass, ceramics, enameled steel, and combinations thereof. Moreover, the body 104 may be formed as a unitary, single piece or, alternatively, as multiple discrete pieces joined together. The body 104 (of the cooktop appliance 100) may include a top panel 112 for supporting the burner assemblies 108. The top panel 112 may be constructed of any suitably rigid and heat-resistant material capable of supporting the burner assemblies 108, cooking utensils, and/or other components of the cooktop appliance 100. By way of example, the top panel 112 may be constructed of enameled steel, stainless steel, glass, ceramics, and combinations thereof.
[0020] Referring to FIGS. 2-5, a burner assembly 116 of the one or more burner assemblies 108 is discussed. It should be noted that the description provided below for the burner assembly 116 may be equally applicable to the remaining burner assemblies 108, without any limitations.
[0021] The burner assembly 116 includes a burner base 120 (as shown in FIGS. 1 and 5) and a gas burner 124. The burner base 120 may be supported on the body 104 of the cooktop appliance 100. The burner base 120 may include an annular body 128. The annular body 128 may define a central opening 132. The central opening 132 may be in fluid communication with a fuel supply source (e.g., gaseous fuel cylinder or tank) (not shown) to receive the fuel (or fuel mixture, e.g., liquified petroleum gas). In some embodiments, the burner base 120 may facilitate mixing of the fuel (received from the fuel supply source) with air supplied within the central opening 132. Further, the central opening 132 may be in fluid communication with the gas burner 124 to route the fuel (or fuel mixture) (received from the fuel supply source) to flow towards the gas burner 124. The burner base 120 may be fabricated from a variety of suitable materials such as carbon steel, brass, or aluminum, with aluminum being preferred. However, any other suitable material such as cast iron, ceramics, or even heat-resistant plastics may be used to fabricate the burner base 120.
[0022] The gas burner 124 is formed of two members, namely – a first member 136 and a second member 140. The first member 136 includes a body 144 and a mating portion 148. The body 144 may define an axis 152, a first end 156, a second end 160 spaced from the first end 156 along the axis 152, an aperture 164 extending between the first end 156 and the second end 160, an inner wall 168 extending around the aperture 164 and the axis 152 between the first end 156 and the second end 160, an outer wall 172 surrounding the inner wall 156 and extending between the first end 156 and the second end 160, and a step portion 176 defined on the outer wall 172. The step portion 176 may extend radially outwardly (away from the axis 152) from the outer wall 172 to define a seating portion 180 (hereinafter referred to as “inner seating portion 180”). The mating portion 148 may be defined by the inner seating portion 180 and a portion 184 (of the outer wall 172) extending axially between the inner seating portion 180 and the first end 156.
[0023] Additionally, as shown in FIG. 3, the first member 136 includes another mating portion, namely a mating portion 188. It should be noted that, for clarity purposes, the mating portion 148 is hereinafter referred to as “inner mating portion 148” and the mating portion 188 is hereinafter referred to as “outer mating portion 188”. The outer mating portion 188 may circumferentially surround the inner mating portion 148. For that, the body 144 (of the first member 136) may further define a third end 192, a fourth end 196 spaced from the third end 192 along the axis 152, an interior wall 200 extending (e.g., circumferentially) around the step portion 176 between the third end 192 and the fourth end 196, an exterior wall 204 extending (e.g., circumferentially) around the interior wall 200 between the third end 192 and the fourth end 196, and a step portion 208 defined on the interior wall 200. The step portion 208 may extend radially inwardly (towards the axis 152) from the interior wall 200 to define a seating portion 212 (hereinafter referred to as “outer seating portion 212”). The mating portion 188 may be defined by the outer seating portion 212 and a portion 216 (of the interior wall 200) extending axially between the outer seating portion 212 and the third end 192. In an exemplary embodiment, as shown in FIGS. 3 and 5, the first end 156 and the third end 192 may lie in a plane (shown via a dashed line 220, in FIG. 5).
[0024] Additionally, the first member 136 may include one or more tabs 222. Each tab 222 may extend radially between the inner mating portion 148 and the outer mating portion 188 to connect the inner mating portion 148 with the outer mating portion 188. In an example, as shown in FIG. 3, the tabs 222 may extend radially from the step portion 176 to connect with the step portion 208. Further, as shown in FIGS. 3 and 4, four tabs 222 are arranged circumferentially about the axis 152 of the first member 136. However, it should be noted that the first member 136 may include a lesser or a higher number of tabs, such as the tabs 222.
[0025] The second member 140 is configured to be coupled to the first member 136. The second member 140 includes a body 224. The body 224 may define a central opening 228 and an axis 232 passing through the central opening 228. Also, the second member 140 includes an annular surface 236 and one or more corrugated portions 240. The annular surface 236 may circumferentially surround the central opening 228. The annular surface 236 defines an inner periphery 244 located towards the central opening 228 (or the axis 232), and an outer periphery 248 located radially outward of inner periphery 244.
[0026] Each of the corrugated portions 240 may extend radially and axially away from the annular surface 236 to define alternating projection portions and depression portions. In an exemplary embodiment, as shown in FIG. 3, the second member 140 includes two corrugated portions 240, namely – an inner corrugated portion 252 and an outer corrugated portion 256. The inner corrugated portion 252 may extend radially inwardly and axially downwardly from the inner periphery 244 (of the annular surface 236) to define the alternating projection portions 260 (hereinafter referred to as “inner projection portions 260”) and depressions portions 264 (hereinafter referred to as “inner depression portions 264”). The outer corrugated portion 256 may extend radially outwardly and axially downwardly from the outer periphery 248 (of the annular surface 236) to define alternating projection portions 268 (hereinafter referred to as “outer projection portions 268”) and depression portions 272 (hereinafter referred to as “outer depression portions 272”).
[0027] Additionally, the second member 140 may include one or more channels 276. The channels 276 may extend axially away from the annular surface 236. In an exemplary embodiment, as shown in FIG. 4, the second member 140 includes multiple pairs of spaced-apart legs 280. Each leg 280 (of a pair of legs 280) may extend (e.g., axially) from a bottom surface 282 (defined opposite to the annular surface 236) and away from the annular surface 236 to define the corresponding channel 276 in a space therebetween. In this configuration, the channels 276 may be configured to receive the corresponding tabs 222 (of the first member 136) to facilitate alignment and coupling of the first member 136 with the second member 140.
[0028] In an exemplary assembly of the second member 140 with the first member 136, the second member 140 may be moved towards the first member 136 (e.g., mounted on the burner base 120) to receive the tabs 222 within the corresponding channels 276. The second member 140 may move further towards the first member 136 such that the inner projection portions 260 may be abutted against the inner mating portion 148 to define burner orifices 284 (hereinafter referred to as “inner burner orifices 284”) (shown in FIG. 2) between the inner depression portions 264 and the inner mating portion 148. In addition, the outer projection portions 268 may be abutted against the outer mating portion 188 to define burner orifices 288 (hereinafter referred to as “outer burner orifices 288”) (shown in FIG. 2) between the outer depression portions 272 and the outer mating portion 188.
[0029] Referring to FIGS. 6 and 7, a gas burner 600 is shown. The gas burner 600 is similar in many respects to the gas burner 124 but may differ from the gas burner 124 in that a mating portion of a first member 602 (similar to the first member 136) defines alternating ridge portions and trough portions. In an exemplary embodiment, as shown in FIG. 7, the first member 136 may include two fluted mating portions 604, namely – an inner fluted mating portion 612 and an outer fluted mating portion 616. The inner fluted mating portion 612 may define alternating inner ridge portions 620 and inner trough portions 624. The outer fluted mating portion 616 may define alternating outer ridge portions 628 and outer trough portions 632.
[0030] In an exemplary assembly of the second member 140 with the first member 602, the inner projection portions 260 (of the second member 140) may be aligned (e.g., by receiving the tabs 222 within the channels 276) and abutted against the inner ridge portions 620 (of the first member 602) to define burner orifices 636 (hereinafter referred to as “inner burner orifices 636”) (as shown in FIG. 6) between the inner depression portions 264 and the inner trough portions 624. In addition, the outer projection portions 268 may be abutted against the outer ridge portions 628 to define burner orifices 640 (hereinafter referred to as “outer burner orifices 640”) (as shown in FIG. 6) between the outer depression portions 272 and the outer trough portion 632.
[0031] Referring to FIGS. 8 and 9, a gas burner 800 is shown. The gas burner 800 includes a first member 802 and a second member 804. The first member 802 is similar in many respects to the first member 602 (of the gas burner 600) but may differ from the first member 602 in that an outer mating portion 808 (of the first member 802) has a different profile (e.g., shape) than that of the outer mating portion 616. For example, the outer mating portion 808 includes alternating outer ridge portions 812 and outer trough portions 816. In addition, the outer mating portion 808 also includes a plurality of first cavities 820. Each first cavity 820 may extend from its corresponding trough portion 816 towards its exterior wall (of the first member 802) (similar to the exterior wall 204 of the first member 136, 602).
[0032] The second member 804 is similar in many respects to the second member 140 (of the gas burner 600) but may differ from the second member 140 in that an outer corrugated portion 824 (of the second member 802) has a different profile (e.g., shape) than that of the outer corrugated portion 256. For example, the outer corrugated portion 824 includes alternating outer projection portions 828 and outer depression portions 832. In addition, the outer corrugated portion 824 also includes a plurality of second cavities 836. Each second cavity 836 may extend from its corresponding outer depression portion 832 towards its annular surface 236 (of the second member 804) (similar to the annular surface 236 of the second member 140).
[0033] In an exemplary assembly of the second member 804 with the first member 802, the inner projection portions 260 (of the second member 804) may be aligned (e.g., by receiving the tabs 222 within the channels 276) and abutted against the inner ridge portions 620 (of the first member 802) to define burner orifices 840 (hereinafter referred to as “inner burner orifices 840”) (as shown in FIG. 8) between the inner depression portions 264 and the inner trough portions 624. Further, in the assembly of the second member 804 with the first member 802, the outer projection portions 828 and outer depression portions 832 may engage with their corresponding outer trough portions 816 and the outer ridge portions 812 respectively, to define a first set of outer burner orifices 844 and a second set of outer burner orifices 848 (shown in FIG. 8).
Industrial Applicability
[0034] A method of assembling the gas burner 124 is now discussed. The method includes using the first member 136 of the gas burner 124. The first member 136 provides the mating portions, namely – the inner mating portion 148 and the outer mating portion 188. The first member 136 may be coupled to the burner base 120 of the burner assembly 116. Further, the method includes using the second member 140 of the gas burner 124. The second member 140 provides the corrugated portions, namely – the inner corrugated portion 252 and the outer corrugated portion 256. The inner corrugated portion 252 is provided with the alternating inner projection portions 260 and the inner depression portions 264, whereas the outer corrugated portion 256 is provided with the alternating outer projection portions 268 and the outer depression portions 272. Furthermore, the method includes causing the second member 140 to be coupled with the first member 136. For that, the second member 140 may be moved towards the first member 136 (e.g., mounted on the burner base 120) to receive the tabs 222 within the corresponding channels 276. The second member 140 may move further towards the first member 136 such that the inner projection portions 260 may be abutted against the inner mating portion 148 to define the inner burner orifices 284 between the inner depression portions 264 and the inner mating portion 148, whereas the outer projection portions 268 may be abutted against the outer mating portion 188 to define the outer burner orifices 288 between the outer depression portions 272 and the outer mating portion 188.
[0035] It should be noted that the first member 602 and the second member 140 of the gas burner 600 may be coupled together in the similar manner as discussed above for the gas burner 124. Accordingly, a method of assembling the gas burner 600 is not discussed, for sake of brevity.
[0036] Further, a method of assembling the gas burner 800 is now discussed. The method includes using the first member 802 of the gas burner 800. The first member 802 provides the mating portions, namely – the inner mating portion 612 and the outer mating portion 616. The first member 802 may be coupled to the burner base 120 of the burner assembly 116. Further, the method includes using the second member 804 of the gas burner 800. The second member 804 provides the corrugated portions, namely – the inner corrugated portion 252 and the outer corrugated portion 824. The inner corrugated portion 252 is provided with the alternating inner projection portions 260 and the inner depression portions 264, and the first cavities 820, whereas the outer corrugated portion 824 is provided with the alternating outer projection portions 828, the outer depression portions 832, and the second cavities 836. Furthermore, the method includes causing the second member 804 to be coupled with the first member 802. For that, the second member 804 may move towards the first member 802 to receive the tabs 222 within the corresponding channels 276. The second member 804 may move further towards the first member 802 such that the inner projection portions 260 (of the second member 804) may be aligned (e.g., by receiving the tabs 222 within the channels 276) and abutted against the inner ridge portions 620 (of the first member 802) to define the inner burner orifices 840 between the inner depression portions 264 and the inner trough portions 624. Further, in the assembly of the second member 804 with the first member 802, the outer projection portions 828 and outer depression portions 832 may engage with their corresponding outer trough portions 816 and the outer ridge portions 812 respectively, to define the first set of outer burner orifices 844 and the second set of outer burner orifices 848.
[0037] The gas burner 124, 600, 800 has simple geometric features, i.e., alternating protrusions, depressions and/or alternating ridges/troughs, the gas burner 124, 600, 800 can be retrofittable to any existing fuel-gas based burner assembly (of any type of cooktop appliance). The gas burner 124 is formed of two members, i.e., the first member 136 and the second member 140, that are coupled together to form burner orifices, i.e., the inner burner orifices 284 and the outer burner orifices 288 of improved combustion efficiency.
[0038] Further, because the gas burner 124 is formed of two separate/split members, (i.e., the first member 136 and the second member 140), in case of clogged burner orifices (i.e., the inner burner orifices 284 and the outer burner orifices 288), the user can simply decouple the second member 140 from the first member 136 for cleaning purposes. For example, once decoupled, the user may easily access and clean the projection portions 260, 268 and the depression portions 264, 272 of the second member 140, as well as the ridge portions 620, 628 and the trough portions 624, 632 of the first member 136, for example, by using soft bristled brush, soft scrubber, or by using running water, instead of hard metal pins or brushes. This may reduce or prevent erosion/abrasion in the orifices, and hence, improves operational life of the burner assembly.
[0039] Unless explicitly excluded, the use of the singular to describe a component, structure, or operation does not exclude the use of plural such components, structures, or operations or their equivalents. The use of the terms “a” and “an” and “the” and “at least one” or the term “one or more,” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The use of the term “at least one” followed by a list of one or more items (for example, “at least one of A and B” or one or more of A and B”) is to be construed to mean one item selected from the listed items (A or B) or any combination of two or more of the listed items (A and B; A, A and B; A, B and B), unless otherwise indicated herein or clearly contradicted by context. Similarly, as used herein, the word "or" refers to any possible permutation of a set of items. For example, the phrase "A, B, or C" refers to at least one of A, B, C, or any combination thereof, such as any of: A; B; C; A and B; A and C; B and C; A, B, and C; or multiple of any item such as A and A; B, B, and C; A, A, B, C, and C; etc.
[0040] It will be apparent to those skilled in the art that various modifications and variations can be made to the cooktop appliance, the burner assembly, the gas burner, and/or the method of the present disclosure without departing from the scope of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the cooktop appliance, the burner assembly, the gas burner, and/or the method disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims and their equivalent.

LIST OF ELEMENTS

TITLE: GAS BURNER FOR COOKTOP APPLIANCES

100 cooktop appliance
104 body
108 burner assembly
112 top panel
116 burner assembly
120 burner base
124 gas burner
128 annular body
132 central opening
136 first member
140 second member
144 body
148 mating portion
152 axis
156 first end
160 second end
164 aperture
168 inner wall
172 outer wall
176 step portion
180 seating portion
184 portion
188 mating portion
192 third end
196 fourth end
200 interior wall
204 exterior wall
208 step portion
212 seating portion
216 portion
220 dashed line
222 tabs
224 body
228 central opening
232 axis
236 annular surface
240 corrugated portion
244 inner periphery
248 outer periphery
252 inner corrugated portion
256 outer corrugated portion
260 alternating projection portion
264 depressions portion
268 alternating projection portion
272 depression portion
276 channel
280 spaced-apart leg
282 bottom surface
284 burner orifice
288 burner orifice
600 gas burner
602 first member
604 two fluted mating portion
612 inner fluted mating portion
616 outer fluted mating portion
620 alternating inner ridge portion
624 inner trough portion
628 alternating outer ridge portion
632 outer trough portion
636 burner orifice
640 burner orifice
800 gas burner
802 first member
804 second member
808 outer mating portion
812 alternating outer ridge portion
816 outer trough portion
820 first cavity
824 outer corrugated portion
828 alternating outer projection portion
832 outer depression portion
836 second cavity
840 burner orifice
844 outer burner orifice
848 outer burner orifice
,CLAIMS:1. A gas burner for a burner assembly of a cooktop appliance, the gas burner comprising:
a first member configured to be coupled to a burner base of the burner assembly, the first member including a mating portion; and
a second member configured to be coupled with the first member, the second member including:
an annular surface; and
a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions,
wherein, when the first member and the second member are coupled together, the projection portions engage with the mating portion to correspondingly define burner orifices between the depression portions and the mating portion.

2. The gas burner as claimed in claim 1, wherein the mating portion is an inner mating portion, the corrugated portion is an inner corrugated portion extending radially inwardly and axially downwardly from an inner periphery of the annular surface to define the alternating projection portions and depressions portions, the alternating projection portions are inner projection portions, the depressions portions are inner depression portions, and the burner orifices are inner burner orifices, and wherein:
the first member includes an outer mating portion surrounding the inner mating portion; and
the second member includes an outer corrugated portion extending radially outwardly and axially downwardly from an outer periphery of the annular surface to define alternating outer projection portions and outer depression portions,
wherein, when the first member and the second member are coupled together, the outer projection portions engage with the outer mating portion to correspondingly define outer burner orifices between the outer depression portions and the outer mating portion.

3. The gas burner as claimed in claim 2, wherein the first member includes one or more tabs extending radially between the inner mating portion and the outer mating portion to connect the inner mating portion with the outer mating portion, and wherein the second member includes one or more channels extending axially away from the annular surface, the one or more channels are configured to receive the corresponding one or more tabs to align and couple the first member and the second member together.

4. The gas burner as claimed in claim 1, wherein the mating portion defines alternating ridge portions and trough portions,
wherein, when the first member and the second member are coupled together, the ridge portions engages with the corresponding projection portions to define the burner orifices between the corresponding trough portions and the corresponding depression portions.

5. The gas burner as claimed in claim 4, wherein the mating portion is an inner mating portion, the ridge portions are inner ridge portions, the trough portions are inner trough portions, the corrugated portion is an inner corrugated portion extending radially inwardly and axially downwardly from an inner periphery of the annular surface to define the alternating projection portions and depressions portions, the alternating projection portions are inner projection portions, the depressions portions are inner depression portions, and the burner orifices are inner burner orifices, wherein:
the first member includes an outer mating portion surrounding the inner mating portion, the outer mating portion including alternating outer ridge portions and outer trough portions; and
the second member includes an outer corrugated portion extending radially outwardly and axially downwardly from an outer periphery of the annular surface to define alternating outer projection portions and outer depression portions,
wherein, when the first member and the second member are coupled together, the outer projection portions engage with the corresponding outer ridge portions to define outer burner orifices between the corresponding outer depression portions and the corresponding outer trough portions.

6. The gas burner as claimed in claim 4, wherein the mating portion is an inner mating portion, the ridge portions are inner ridge portions, the trough portions are inner trough portions, the corrugated portion is an inner corrugated portion extending radially inwardly and axially downwardly from an inner periphery of the annular surface to define the alternating projection portions and depressions portions, the alternating projection portions are inner projection portions, the depressions portions are inner depression portions, and the burner orifices are inner burner orifices, wherein:
the first member includes an outer mating portion surrounding the inner mating portion, the outer mating portion including alternating outer ridge portions and outer trough portions; and
the second member includes an outer corrugated portion extending radially outwardly and axially downwardly from an outer periphery of the annular surface to define alternating outer projection portions and outer depression portions,
wherein, when the first member and the second member are coupled together, the outer projection portions and the outer depression portions engage with their corresponding outer trough portions and the outer ridge portions, respectively, to define a first set of outer burner orifices and the second set of outer burner orifices.

7. A burner assembly for a cooktop appliance, the burner assembly comprising:
a burner base supported on a body of the cooktop appliance; and
a gas burner including:
a first member configured to be coupled to the burner base, the first member including a mating portion; and
a second member configured to be coupled with the first member, the second member including:
an annular surface; and
a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions,
wherein, when the first member and the second member are coupled together, the projection portions engage with the mating portion to correspondingly define burner orifices between the depression portions and the mating portion.

8. A cooktop appliance, comprising:
a body; and
a burner assembly including:
a burner base supported on the body; and
a gas burner including:
a first member configured to be coupled to the burner base, the first member including a mating portion; and
a second member configured to be coupled with the first member, the second member including:
an annular surface; and
a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions,
wherein, when the first member and the second member are coupled together, the projection portions engage with the mating portion to correspondingly define burner orifices between the depression portions and the mating portion.

9. A method of assembling a gas burner of a burner assembly for a cooktop appliance, the method comprising:
using a first member of the gas burner, the first member configured to be coupled to a burner base of the burner assembly, and including a mating portion;
using a second member of the gas burner, the second member including an annular surface, and a corrugated portion extending radially and axially away from the annular surface to define alternating projection portions and depression portions; and
causing the second member to be coupled with the first member such that the projection portions of the second member engage with the mating portion of the first member to correspondingly define burner orifices between the depression portions and the mating portion.

10. The method of claim 9, wherein the mating portion is an inner mating portion, the first member including an outer mating portion surrounding the inner mating portion and one or more tabs extending radially between the inner mating portion and the outer mating portion, the second member including one or more channels extending axially away from the annular surface, and wherein causing the second member to be coupled with the first member includes:
receiving the one or more tabs within the corresponding one or more channels to facilitate alignment and engagement of the projection portions of the second member with the mating portion of the first member to correspondingly define burner orifices between the depression portions and the mating portion.