Combustor and gas stove device

Abstract

The utility model belongs to the technical field of gas stoves, and discloses a burner and a gas stove device, the burner comprises a fire distribution assembly and an inner ring fire cover, and the fire distribution assembly comprises a fire cover base and a flow distribution cover covering the fire cover base; a first inner ring wall and a second inner ring wall which extend and protrude upwards and are nested outwards from the center are arranged on a bottom cover plate of the flow dividing cover, an inner ring gas mixing channel is defined by the first inner ring wall, the second inner ring wall and the bottom cover plate, and an inner ring gas inlet communicated with the inner ring gas mixing channel is formed in the bottom cover plate; the inner ring fire cover covers the shunting cover to seal the inner ring gas mixing channel; an ignition hole communicated with the inner ring gas mixing channel is formed in the inner ring fire cover; the ignition needle and the thermocouple are arranged side by side and face the ignition hole, and the ignition needle, the thermocouple and the inner ring air inlet are symmetrically located on the inner side and the outer side of the second inner ring wall. The combustor can still keep stable combustion of the ignition hole when the air inlet valve is adjusted to be minimum, small fire flameout of the ignition needle is avoided, and the influence on the detection accuracy of the thermocouple is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stoves, in particular to a burner and a gas stove device. Background Art

[0002] A gas stove is a kitchen appliance that uses direct flame heating through the combustion of gas fuel. As an important component of a gas stove, the burner's main function is to mix fuel and air and ignite them to produce a flame. The burner head generally has a center flame cover and an outer ring flame cover, which produce a center flame and an outer ring flame, respectively. In order to guide the gas into the center flame cover and the outer ring flame cover respectively, the burner head is also provided with a gas distributor seat. The center flame cover and the outer ring flame cover are both installed above the gas distributor seat to form an inner ring cavity and an outer ring cavity, respectively, which are isolated from each other. The inner ring cavity is connected to the flame stabilization hole on the center flame cover to supply gas to the ignition needle and the center flame. When the gas stove's air intake valve is adjusted to the minimum, the gas flow in the inner ring cavity is small, and the flame stabilization hole cannot burn stably, causing the ignition needle to extinguish a small flame and triggering the valve body to cut off the gas. This affects the accuracy of the thermocouple's detection data and can easily cause the air intake valve to malfunction.

[0003] Therefore, there is an urgent need for a burner and a gas stove device to solve the above problems. Utility Model Content

[0004] One purpose of the present utility model is to provide a burner that can solve the problem that when the intake valve is adjusted to the minimum, the fire stabilizing hole of the existing inner ring fire cover cannot burn stably, causing the ignition needle to extinguish the small fire and trigger the valve body to cut off the gas, affecting the accuracy of the thermocouple's detection data and easily causing the intake valve to malfunction.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A burner is provided, comprising a burner head and an ignition needle and a thermocouple mounted on the burner head, the burner further comprising:

[0007] A fire distribution assembly is connected to the burner head, the fire distribution assembly includes a fire cover base and a diverter cover provided on the fire cover base, the bottom cover plate of the diverter cover is provided with a first inner ring wall and a second inner ring wall extending upward and nested from the center outward, the first inner ring wall, the second inner ring wall and the bottom cover plate enclose an inner ring gas mixing channel, and the bottom cover plate is provided with an inner ring air inlet connected to the inner ring gas mixing channel;

[0008] An inner ring fire cover is arranged above the diverter cover to close the inner ring gas mixing channel, and an ignition hole communicating with the inner ring gas mixing channel is opened on the inner ring fire cover;

[0009] The ignition needle and the thermocouple are arranged in parallel and both face the ignition hole. The ignition needle and the thermocouple are symmetrically located on the inner and outer sides of the second inner ring wall with respect to the inner ring air inlet.

[0010] In one embodiment, a first avoidance port and a second avoidance port arranged in parallel are provided on the fire cover base, the ignition needle passes through the first avoidance port, the thermocouple passes through the second avoidance port, and a supplementary air inlet is provided on the diverter cover, the first avoidance port and the second avoidance port are both connected to the supplementary air inlet, and the supplementary air inlet and the inner ring air inlet are separated, and the supplementary air inlet faces the ignition hole.

[0011] In one embodiment, along the radial direction of the ignition assembly, the projections of the first avoidance opening and the second avoidance opening both overlap with the inner ring air inlet.

[0012] In one embodiment, the length of the inner annular gas mixing channel extends around the axial direction of the ignition divider assembly, and along the circumferential direction of the ignition divider assembly, the central angle of the inner annular gas mixing channel is not less than 180°.

[0013] In one embodiment, a shielding plate is provided on the edge of the inner ring fire cover, and the shielding plate can shield the top of the ignition needle.

[0014] In one embodiment, an extension boss protruding outward is provided on the outer wall of the inner ring fire cover, and the extension boss extends toward the ignition needle and the thermocouple. The thickness of the extension boss is greater than the thickness of the outer wall. The ignition hole is opened on the extension boss, and the outer wall is provided with an inner ring combustion hole.

[0015] In one embodiment, a positioning notch is formed on the second inner ring wall, and the extended boss is embedded in the positioning notch.

[0016] In one embodiment, the inner ring fire cover includes an inner side wall and an outer side wall that are nested together, the inner side wall is connected to the first inner ring wall, the outer side wall is connected to the second inner ring wall, and an inner ring combustion hole is provided on the outer side wall.

[0017] In one embodiment, a first positioning step is formed on the end surface of one of the first inner ring wall and the inner side wall, and the other one can be embedded in the first positioning step; and / or,

[0018] A second positioning step is formed on the end surface of one of the second inner ring wall and the outer side wall, and the other one can be embedded in the second positioning step.

[0019] Another object of the present invention is to provide a gas stove device, which has a burner that can solve the problem that when the air intake valve of the existing inner ring fire cover is adjusted to the minimum, the fire stabilizing hole cannot burn stably, causing the ignition needle to extinguish the small flame and trigger the valve body to cut off the gas, affecting the accuracy of the thermocouple's detection data and easily causing the air intake valve to malfunction.

[0020] To achieve this purpose, the present invention adopts the following technical solutions on the other hand:

[0021] A gas stove device is provided, comprising the burner as described above.

[0022] Beneficial effects of the utility model:

[0023] The burner provided by the present invention has a fire distribution assembly including a fire cover base and a diverter cover provided on the fire cover base. The bottom cover plate of the diverter cover is provided with a first inner ring wall and a second inner ring wall that are protruding upward and nested from the center outward. The first inner ring wall, the second inner ring wall and the bottom cover plate are arranged to form an inner ring gas mixing channel. The bottom cover plate is provided with an inner ring air inlet connected to the inner ring gas mixing channel. The gas provided by the burner enters the inner ring gas mixing channel through the inner ring air inlet. The inner ring fire cover is provided above the diverter cover to close the inner ring gas mixing channel. The inner ring fire cover is provided with an ignition hole connected to the inner ring gas mixing channel. The ignition needle and the thermocouple are arranged side by side and both face the ignition hole. The ignition needle and the thermocouple are symmetrically located on the inner and outer sides of the second inner ring wall and the inner ring air inlet. The closed inner ring gas mixing channel gathers and mixes the gas, and the inner ring gas inlet serves as the entrance of the inner ring gas mixing channel. The gas at this position is more sufficient, and a relatively high gas pressure can be formed. In addition, the inner ring gas inlet forms a sudden change in the cross-sectional area of ​​the gas flow channel relative to the cavity of the burner, which makes the gas flow speed at this location faster. Even when the gas inlet valve of the gas stove device is adjusted to the minimum, the gas flow provided by the burner becomes smaller, and the gas in the inner ring gas mixing channel is also reduced accordingly. The inner ring gas inlet can still maintain a high gas pressure and a faster gas flow speed. Therefore, since the inner ring gas inlet and the ignition needle and the thermocouple are symmetrically located on the inner and outer sides of the second inner ring wall, and the ignition needle and the thermocouple are arranged side by side and facing the ignition hole, the inner ring gas inlet can provide sufficient gas for the ignition needle, so that the ignition hole maintains stable combustion, avoids the ignition needle from extinguishing a small flame and triggering the valve body to cut off the gas, and also reduces the impact on the accuracy of the thermocouple detection, preventing the intake valve from malfunctioning.

[0024] The gas stove device provided by the present invention includes the above-mentioned burner, and the inner ring air inlet of the burner serves as the entrance of the inner ring gas mixing channel. The gas there is more sufficient, the gas pressure is relatively high, and the gas flow speed is faster, thereby providing sufficient gas to the ignition needle and thermocouple arranged in parallel and both facing the ignition hole, so that the ignition hole can still maintain stable combustion when the air intake valve is adjusted to the minimum, avoiding the ignition needle from extinguishing a small flame and triggering the valve body to cut off the gas, reducing the impact on the accuracy of thermocouple detection, preventing the air intake valve from malfunctioning, and improving the combustion quality and working reliability of the gas stove device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a partial structural diagram of a burner provided by an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the partial disassembly of the structure of the burner provided in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic structural diagram of a diverter cover provided by an embodiment of the present utility model;

[0028] Figure 4 This is a top view of the structure of the ignition assembly provided by an embodiment of the present utility model;

[0029] Figure 5 The present invention is a cross-sectional view of the structure of the burner provided in an embodiment of the present invention.

[0030] In the picture:

[0031] 1. Fire distribution assembly; 11. Fire cover base; 111. First avoidance; 112. Second avoidance; 12. Diverter cover; 121. Bottom cover plate; 1211. Inner ring air inlet; 122. First inner ring wall; 123. Second inner ring wall; 1231. Positioning notch; 1232. Second positioning step; 124. Inner ring gas mixing channel; 125. Supplementary air inlet;

[0032] 2. Inner ring fire cover; 21. Ignition hole; 22. Shield; 23. Extended boss; 24. Outer wall; 25. Inner ring combustion hole; 26. Inner wall; 261. First positioning step;

[0033] 3. Outer ring fire cover;

[0034] 100, ignition needle; 200, thermocouple. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0036] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0039] A gas stove is a kitchen appliance that uses direct flame heating through the combustion of gas fuel. As an important component of a gas stove, the burner's main function is to mix fuel and air and ignite them to produce a flame. The burner head generally has a center flame cover and an outer ring flame cover, which produce a center flame and an outer ring flame, respectively. In order to guide the gas into the center flame cover and the outer ring flame cover respectively, the burner head is also provided with a gas distributor seat. The center flame cover and the outer ring flame cover are both installed above the gas distributor seat to form an inner ring cavity and an outer ring cavity, respectively, which are isolated from each other. The inner ring cavity is connected to the flame stabilization hole on the center flame cover to supply gas to the ignition needle and the center flame. When the gas stove's air intake valve is adjusted to the minimum, the gas flow in the inner ring cavity is small, and the flame stabilization hole cannot burn stably, causing the ignition needle to extinguish a small flame and triggering the valve body to cut off the gas. This affects the accuracy of the thermocouple's detection data and can easily cause the air intake valve to malfunction.

[0040] In order to solve the above problems, the embodiments of the present invention provide a burner and a gas stove device.

[0041] like Figure 1 and Figure 2 As shown, this embodiment first provides a burner, which includes a burner head (not shown), an ignition needle 100 mounted on the burner head, and a thermocouple 200. When the burner is ignited, the ignition needle 100 generates a spark, thereby igniting the mixed gas provided by the burner head. The thermocouple 200 is used to detect the combustion temperature at the ignition point. If the combustion temperature exceeds a preset range, the thermocouple 200 transmits the real-time temperature to the controller of the gas stove device. The controller adjusts the gas output of the burner head in real time to ensure the stability of the combustion temperature and improve the flame-keeping performance.

[0042] The burner also includes a fire distribution assembly 1 and an inner ring fire cover 2. The fire distribution assembly 1 is connected to the burner head. The fire distribution assembly 1 includes a fire cover base 11 and a diverter cover 12 provided on the fire cover base 11. The bottom cover plate 121 of the diverter cover 12 is provided with a first inner ring wall 122 and a second inner ring wall 123 that extend upward and are nested from the center outward. The first inner ring wall 122, the second inner ring wall 123 and the bottom cover plate 121 are arranged to form an inner ring gas mixing channel 124. The bottom cover plate 121 is provided with an inner ring air inlet 1211 that connects to the inner ring gas mixing channel 124. The gas provided by the burner head enters the inner ring gas mixing channel 124 through the inner ring air inlet 1211. The inner ring fire cover 2 is provided on top of the diverter cover 12 to close the inner ring gas mixing channel 124. The inner ring fire cover 2 is provided with an ignition hole 21 that connects to the inner ring gas mixing channel 124. Among them, the ignition needle 100 and the thermocouple 200 are arranged in parallel and both face the ignition hole 21. The ignition needle 100 and the thermocouple 200 are symmetrically located on the inner and outer sides of the second inner ring wall 123 with the inner ring air inlet 1211. The closed inner ring gas mixing channel 124 gathers and mixes the gas, and the inner ring air inlet 1211 serves as the entrance to the inner ring gas mixing channel 124. The gas at this position is more sufficient and can form a relatively high gas pressure. In addition, the inner ring air inlet 1211 forms a sudden change in the cross-sectional area of ​​the gas flow channel relative to the cavity of the burner, which makes the gas flow speed at this location faster. Even if the air inlet valve of the gas stove device is adjusted to the minimum, the gas flow provided by the burner becomes smaller, the gas in the inner ring gas mixing channel 124 is also reduced accordingly, and the inner ring air inlet 1211 can still maintain Maintaining a higher gas pressure and a faster gas flow rate, the inner ring air inlet 1211, the ignition needle 100 and the thermocouple 200 are symmetrically located on the inner and outer sides of the second inner ring wall 123, and the ignition needle 100 and the thermocouple 200 are arranged side by side and both face the ignition hole 21. The inner ring air inlet 1211 can provide sufficient gas for the ignition needle 100, so that the ignition hole 21 maintains stable combustion, avoids the ignition needle 100 from extinguishing a small flame and triggering the valve body to cut off the gas, and also reduces the impact on the detection accuracy of the thermocouple 200, thereby preventing the intake valve from malfunctioning.

[0043] The outer ring fire cover 3 of the burner is covered on the fire cover base 11, and an outer ring gas mixing chamber is formed between the outer ring fire cover 3, the fire cover base 11 and the diverter cover 12. The ignition needle 100 and the thermocouple 200 are located between the inner ring fire cover 2 and the outer ring fire cover 3.

[0044] In order to facilitate the ignition needle 100 and the thermocouple 200 installed on the burner to extend to the side of the inner ring fire cover 2 above the burner, the fire cover base 11 is provided with a first avoidance port 111 and a second avoidance port 112 arranged in parallel. The ignition needle 100 passes through the first avoidance port 111 and the thermocouple 200 passes through the second avoidance port 112 to extend upward to the side of the inner ring fire cover 2. A supplementary air inlet 125 is provided on the diverter cover 12. The first avoidance port 111 and the second avoidance port 112 are both connected to the supplementary air inlet 125, and the supplementary air inlet 125 and the inner ring air inlet 1211 are separated (such as Figure 3 As shown), the supplementary air inlet 125 faces the ignition hole 21. The supplementary air inlet 125 can provide secondary supplementary air near the ignition hole 21, which is beneficial to the combustion stability of the ignition hole 21 and thus reduces the smoke emission of the burner.

[0045] Along the radial direction of the ignition assembly 1, the projections of the first avoidance port 111 and the second avoidance port 112 both overlap with the inner ring air inlet 1211, that is, the circumferential extension size of the inner ring air inlet 1211 can cover the area of ​​the ignition needle 100 and the thermocouple 200. This can ensure that the inner ring air inlet 1211 provides relatively sufficient fuel gas to the ignition hole 21, so that a stable combustion flame can be formed in the area near the ignition needle 100 and the thermocouple 200.

[0046] In one embodiment, the length of the inner ring gas mixing channel 124 extends around the axial direction of the ignition assembly 1, and along the circumferential direction of the ignition assembly 1, the central angle of the inner ring gas mixing channel 124 is not less than 180 degrees. On the one hand, the sufficiently extended inner ring gas mixing channel 124 allows the gas and air to be fully mixed therein, thereby improving the combustion quality of the inner ring fire cover 2. Figure 4 As shown, the arrows in the figure indicate the flow direction of the gas. On the other hand, it avoids the inner ring air inlet 1211 being opened too large to affect the gas distribution volume provided by the fire distribution component 1 to the outer ring fire cover 3.

[0047] In one embodiment, a shielding plate 22 is provided on the edge of the inner ring fire cover 2, and the shielding plate 22 can shield the top of the ignition needle 100. The shielding plate 22 is used to shield the ignition needle 100, enhance the protection effect for the ignition needle 100, and prevent the overflow from dripping onto the ignition needle 100 and causing damage and failure.

[0048] To improve the combustion quality of the ignition hole 21, an outwardly protruding extension boss 23 is provided on the outer sidewall 24 of the inner ring fire cover 2. The extension boss 23 extends toward the ignition needle 100 and the thermocouple 200. The ignition hole 21 is formed on the extension boss 23. The protruding extension boss 23 reduces the distance between the ignition hole 21 and the ignition needle 100 and the thermocouple 200, further improving the flameout prevention performance of the ignition hole 21 and the detection accuracy of the thermocouple 200. The thickness of the extension boss 23 is greater than that of the outer sidewall 24, which is provided with the inner ring combustion hole 25. The extension boss 23 can better gather the gas toward the ignition needle 100.

[0049] In order to improve the positioning accuracy of the inner ring fire cover 2 and ensure that the relative positions of the ignition hole 21 and the inner ring air inlet 1211 will not be misaligned, a positioning notch 1231 is opened on the second inner ring wall 123, and the extended boss 23 is embedded in the positioning notch 1231.

[0050] The inner ring fire cover 2 includes an inner sidewall 26 and an outer sidewall 24 that are nested together, and the inner ring combustion hole 25 is opened in the outer sidewall 24. The inner sidewall 26 is connected to the first inner ring wall 122, and the outer sidewall 24 is connected to the second inner ring wall 123, so that the inner ring fire cover 2 is covered on the diverter cover 12.

[0051] A first positioning step 261 is defined on the end surface of one of the first inner annular wall 122 and the inner side wall 26 , and the other one can be embedded in the first positioning step 261 .

[0052] In one embodiment, a second positioning step 1232 is formed on the end surface of one of the second inner ring wall 123 and the outer ring wall 24, and the other can be embedded in the second positioning step 1232. The first positioning step 261 and the second positioning step 1232 ensure the installation position accuracy of the inner ring fire cover 2, eliminating the need for fasteners and facilitating assembly and disassembly.

[0053] by Figure 5 Taking an example to illustrate, in the figure, the first positioning step 261 is set on the inner wall 26, and the first inner ring wall 122 is embedded in the first positioning step 261; the second positioning step 1232 is set on the second inner ring wall 123, and the outer wall 24 is embedded in the second positioning step 1232, so as to realize the limited installation of the inner ring fire cover 2 on the diversion cover 12.

[0054] The embodiment of the present invention secondly provides a gas stove device, which includes the above-mentioned burner and burner head. The ejector pipe of the burner head ejects gas and drives air flow, and the gas and air simultaneously enter the inner ring air inlet 1211 of the ignition assembly 1. The inner ring air inlet 1211 of the burner serves as the entrance to the inner ring gas mixing channel 124. The gas there is more abundant and the gas pressure is relatively high. The sudden change in the cross-sectional area of ​​the gas flow channel accelerates the gas flow rate at the inner ring air inlet 1211, thereby providing sufficient gas for the ignition needle 100 and the thermocouple 200 arranged in parallel and both facing the ignition hole 21. This allows the ignition hole 21 to maintain stable combustion when the air intake valve is adjusted to the minimum, avoids the ignition needle 100 from extinguishing a small flame and triggering the valve body to cut off the gas, reduces the impact on the detection accuracy of the thermocouple 200, prevents the air intake valve from malfunctioning, and improves the combustion quality and working reliability of the gas stove device.

[0055] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A burner comprising a burner head and an ignition needle (100) and a thermocouple (200) mounted on the burner head, characterized in that: The burner also includes: A fire splitter assembly (1) is connected to the burner head, the fire splitter assembly (1) comprises a fire cover base (11) and a diverter cover (12) arranged on the fire cover base (11), a bottom cover plate (121) of the diverter cover (12) is provided with a first inner ring wall (122) and a second inner ring wall (123) which extend upward and are nested from the center outward, the first inner ring wall (122), the second inner ring wall (123) and the bottom cover plate (121) are arranged to form an inner ring gas mixing channel (124), and an inner ring air inlet (1211) which is connected to the inner ring gas mixing channel (124) is provided on the bottom cover plate (121); An inner ring fire cover (2) is arranged above the diverter cover (12) to close the inner ring gas mixing channel (124), and an ignition hole (21) communicating with the inner ring gas mixing channel (124) is provided on the inner ring fire cover (2); The ignition needle (100) and the thermocouple (200) are arranged in parallel and both face the ignition hole (21); the ignition needle (100) and the thermocouple (200) are symmetrically located on the inner and outer sides of the second inner ring wall (123) with the inner ring air inlet (1211).

2. The burner according to claim 1, characterized in that The fire cover base (11) is provided with a first avoidance port (111) and a second avoidance port (112) arranged in parallel, the ignition needle (100) passes through the first avoidance port (111), and the thermocouple (200) passes through the second avoidance port (112), and the diverter cover (12) is provided with a supplementary air inlet (125), the first avoidance port (111) and the second avoidance port (112) are both connected to the supplementary air inlet (125), and the supplementary air inlet (125) and the inner ring air inlet (1211) are separated, and the supplementary air inlet (125) faces the ignition hole (21).

3. The burner according to claim 2, characterized in that Along the radial direction of the ignition assembly (1), the projections of the first avoidance opening (111) and the second avoidance opening (112) both overlap with the inner ring air inlet (1211).

4. The burner according to claim 1, characterized in that The length of the inner ring gas mixing channel (124) extends around the axial direction of the ignition assembly (1), and along the circumferential direction of the ignition assembly (1), the central angle of the inner ring gas mixing channel (124) is not less than 180 degrees.

5. The burner according to claim 1, characterized in that A shielding plate (22) is provided on the edge of the inner ring fire cover (2), and the shielding plate (22) can shield the top of the ignition needle (100).

6. The burner according to claim 5, characterized in that An extension boss (23) protruding outward is provided on the outer side wall (24) of the inner ring fire cover (2), and the extension boss (23) extends toward the ignition needle (100) and the thermocouple (200). The thickness of the extension boss (23) is greater than the thickness of the outer side wall (24). The ignition hole (21) is opened on the extension boss (23), and the outer side wall (24) is provided with an inner ring combustion hole (25).

7. The burner according to claim 6, characterized in that A positioning notch (1231) is provided on the second inner ring wall (123), and the extending boss (23) is embedded in the positioning notch (1231).

8. The burner according to claim 1, characterized in that The inner ring fire cover (2) comprises an inner side wall (26) and an outer side wall (24) which are nested together, wherein the inner side wall (26) is connected to the first inner ring wall (122), the outer side wall (24) is connected to the second inner ring wall (123), and an inner ring combustion hole (25) is provided on the outer side wall (24).

9. The burner according to claim 8, characterized in that A first positioning step (261) is provided on the end surface of one of the first inner ring wall (122) and the inner side wall (26), and the other of the two can be embedded in the first positioning step (261); and / or, A second positioning step (1232) is provided on the end surface of one of the second inner ring wall (123) and the outer side wall (24), and the other one can be embedded in the second positioning step (1232).

10. A gas stove device, characterized in that: Comprising the burner according to any one of claims 1 to 9.

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