Fire cover, combustor and gas stove

Abstract

The utility model discloses a burner cap, a burner and a gas stove. A fire hole is formed in the fire cover, a groove is formed in the hole wall of the fire hole, and gas in the groove is suitable for being ignited. The grooves are formed in the hole walls of the fire holes, when airflow flows through the grooves, part of the airflow can form vortexes in the grooves, fuel gas in the grooves continuously forms flames in the grooves after being ignited, and when the other part of the airflow flows through the grooves, the other part of the airflow is ignited by the flames generated by the grooves, so that the flame separation phenomenon is effectively restrained.

Description

Technical Field

[0001] This application relates to the field of gas stove technology, and in particular to a burner cap, burner, and gas stove. Background Technology

[0002] When the burner ejects gas, it ignites the gas to form a flame. Generally, the gas is first introduced into the burner and then ejected from it. During the process of the gas being introduced into the burner, it needs to be mixed with some air, which is called primary air. The primary air and the gas are mixed in the burner before being ejected. When the velocity of the gas flow (primary air and gas) ejected from the burner is greater than the combustion velocity, flame lift-off will occur, which will reduce the combustion efficiency. Utility Model Content

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes a fire cover.

[0004] To achieve the above objectives, this application discloses a flame cap, which has a flame hole, and the wall of the flame hole has a groove, and the gas in the groove is suitable for ignition.

[0005] In some embodiments of this application, the groove has a bottom wall and a side wall, the bottom wall and the side wall intersect at an angle of 70° to 110°.

[0006] In some embodiments of this application, the included angle is 90°.

[0007] In some embodiments of this application, the depth of the groove is H, and the width of the groove along the first direction is L, satisfying L = 2H to 4H, where the first direction is the flow direction of the airflow along the fire hole.

[0008] In some embodiments of this application, the fire hole is inclined from bottom to top away from the center of the fire cover.

[0009] In some embodiments of this application, the hole wall of the fire hole includes a first hole wall and a second hole wall. Along the radial direction of the fire cap, the first hole wall is farther away from the center of the fire cap relative to the second hole wall, and the second hole wall is closer to the center of the fire cap relative to the first hole wall. The first hole wall is provided with the groove.

[0010] In some embodiments of this application, a portion of the groove is exposed above the fire hole in a top-to-bottom direction.

[0011] In some embodiments of this application, the groove has a slot with a first position and a second position along the radial direction of the flame cap. The first position is the furthest position of the slot from the center of the flame cap, and the second position is the closest position of the slot from the center of the flame cap. The distance between the first position and the center of the flame cap is da, the distance between the second position and the center of the flame cap is db, and the distance between the edge of the second hole wall and the center of the flame cap is dc, satisfying da > dc > db.

[0012] In some embodiments of this application, the fire holes are arranged in a direction around the center of the fire cap.

[0013] In some embodiments of this application, the groove is arranged in a direction around the center of the fire cap.

[0014] In some embodiments of this application, the flame cap includes a first flame cap and a second flame cap, the first flame cap surrounds the second flame cap, and the flame hole is provided between the first flame cap and the second flame cap. The first flame cap has a first wall of the flame hole, and the second flame cap has a second wall of the flame hole.

[0015] A second aspect of this application discloses a burner comprising a burner head and the aforementioned flame cap, the flame cap being disposed on the burner head.

[0016] In some embodiments of this application, the burner head is provided with a receiving cavity, the fire hole is connected to the receiving cavity, and the receiving cavity is adapted to receive blown air and fuel gas.

[0017] A third aspect of this application discloses a gas stove, which includes the aforementioned burner.

[0018] The technical solution of this application provides a groove in the wall of the fire hole. When the airflow flows through the groove, part of the airflow will form a vortex in the groove. After the gas in the groove is ignited, it will continue to form a flame in the groove. When the other part of the airflow flows through the groove, it will be ignited by the flame generated by the groove, thus effectively suppressing the occurrence of flame lift-off.

[0019] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 Schematic diagram of the burner in some embodiments;

[0022] Figure 2 Exploded views of the burner in some embodiments;

[0023] Figure 3 Cross-sectional view of the flame cover in some embodiments;

[0024] Figure 4 This is a schematic diagram of the first flame cap in some embodiments;

[0025] Figure 5 This is a schematic diagram of the second flame cap in some embodiments;

[0026] Figure 6 This is a radial cross-sectional view of the burner in some embodiments;

[0027] Figure 7 for Figure 6 Enlarged view marked A in the middle;

[0028] Figure 8 for Figure 6 Enlarged view marked A (showing da, db, dc, H, L, and α, with the straight dashed line in the figure representing the hypothetical center of the fire cap).

[0029] Explanation of icon numbers:

[0030] Flame cap 1000, flame hole 1100, first hole wall 1110, second hole wall 1120, edge 1121, groove 1130, groove bottom wall 1131, groove side wall 1132, groove opening 1133, first position 1134, second position 1135, first flame cap 1210, second flame cap 1220, furnace head 2000, accommodating cavity 2100, ejector tube 3000, fan 4000.

[0031] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0036] The first aspect of this application discloses a fire cap 1000, combined with... Figures 1 to 3 As shown, the burner cap 1000 is provided with a burner hole 1100, and the wall of the burner hole 1100 is provided with a groove 1130, and the gas in the groove 1130 is suitable for ignition. By providing a groove 1130 on the wall of the burner hole 1100, when the airflow flows through the groove 1130, part of the airflow will enter the groove 1130 to form a vortex. After the gas in the groove 1130 is ignited, it continues to form a flame in the groove 1130. When another part of the airflow flows through the groove 1130, it is ignited by the flame generated by the groove 1130, thus effectively suppressing the occurrence of flame lift-off.

[0037] Specifically, the burner cap 1000 is applied to the burner, or rather, the burner includes the burner cap 1000. See [link / reference]. Figure 1 and Figure 2 As shown, the burner includes a flame cap 1000 and a burner head 2000. The flame cap 1000 is provided with flame holes 1100, and the burner head 2000 is provided with a receiving cavity 2100. The flame cap 1000 covers the burner head 2000, thereby enclosing the receiving cavity 2100, so that the flame holes 1100 are connected to the receiving cavity 2100. Gas and primary air are introduced into the receiving cavity 2100 and then ejected from the flame holes 1100. If the flow velocity of the gas formed by the combination of gas and primary air is greater than the combustion velocity of the gas, flame lift-off is likely to occur, specifically, the flame leaves the flame hole 1100 by a certain distance. This will lead to a decrease in combustion efficiency. Therefore, this embodiment makes an improvement.

[0038] In this embodiment, the wall of the flame hole 1100 is provided with a groove 1130. The groove 1130 is provided so that when the gas composed of the combustion gas and primary air flows through the groove 1130, a part of the gas will enter the groove 1130 and form a vortex in the groove 1130. That is, there is a gas flow that circulates and stagnates in the groove 1130. Since the vortex in the groove 1130 contains combustion gas and primary air, a flame will be generated in the groove 1130 by igniting the combustion gas in the groove 1130.

[0039] More specifically, when the airflow flows along the flame hole 1100, part of the airflow enters the groove 1130 from the slot 1133 of the groove 1130, thus forming a vortex in the groove 1130. Another part of the airflow passes through the groove 1130 and is ejected from the flame hole 1100. Due to the formation of the vortex in the groove 1130, a stable flame can be generated in the groove 1130 by igniting the gas in the groove 1130. When the other part of the airflow passes through the groove 1130, it will be ignited by the flame generated in the groove 1130. Since the groove 1130 is set on the hole wall of the flame hole 1100, the other part of the airflow that is about to be ejected from the flame hole 1100 can be ignited by the flame generated in the groove 1130 before it leaves the flame hole 1100. This can prevent the flame from leaving the flame hole 1100 and effectively prevent the occurrence of flame detachment.

[0040] Combination Figures 6 to 8As shown, in some embodiments, the groove 1130 has a bottom wall 1131 and a side wall 1132. The bottom wall 1131 and the side wall 1132 intersect, and the included angle between the bottom wall 1131 and the side wall 1132 is 70° to 110°. For example, the included angle between the bottom wall 1131 and the side wall 1132 is α, where α is 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, or 110°. Since there are differences between primary air and combustion gas, such as differences in density and properties, by optimizing the intersection angle between the bottom wall 1131 and the side wall 1132 of the groove 1130, it is more conducive to forming a stable vortex in the groove 1130 when a portion of the airflow enters, thereby enabling the groove 1130 to generate a stable flame. Optionally, the angle between the bottom wall 1131 and the side wall 1132 of the groove can be designed to be 90°, which is more conducive to the formation of eddies in the groove 1130 and also facilitates the machining of the groove 1130.

[0041] Combination Figures 6 to 8 As shown, in some embodiments, the depth of the groove 1130 is H, and the width of the groove 1130 along the first direction is L, satisfying L = 2H to 4H. The first direction is the flow direction of the airflow along the fire hole 1100. By optimizing the depth H and width L of the groove 1130, the formation of vortices in the groove 1130 can also be promoted, making it easier to form stable vortices in the groove 1130.

[0042] It is understandable that the so-called "first direction" should be understood as the overall flow direction of the airflow within the flame hole 1100. The airflow enters from the inlet of the flame hole 1100 and exits from the outlet of the flame hole 1100; the direction from the inlet to the outlet of the flame hole 1100 is the first direction. For example, when the flame hole 1100 extends from bottom to top, then the first direction is from bottom to top; when the flame hole 1100 extends from bottom to diagonally upward, then the first direction is from bottom to diagonally upward. Figure 6 The flame hole 1100 is inclined from bottom to top and away from the center of the flame cap 1000, so the first direction is also inclined from bottom to top away from the center of the flame cap 1000. By satisfying L = 2H to 4H, for example, L is 2H, 3H or 4H, the gas composed of primary air and combustion gas can more easily flow into the groove 1130 to form a vortex.

[0043] Combination Figure 3As shown, in some embodiments, the flame hole 1100 is inclined from bottom to top away from the center of the flame cover 1000. By setting it in this way, the flame generated by the flame hole 1100 is inclined away from the center of the flame cover 1000, which helps to make the flame range larger than the size of the flame cover 1000. In this way, while reducing the space occupied by the flame cover 1000, it is also helpful to ensure a certain flame range. The space occupied by the flame cover 1000 is reduced, and the space occupied by the corresponding burner head 2000 is also reduced.

[0044] Combination Figures 3 to 7 As shown, in some embodiments, the wall of the flame hole 1100 includes a first wall 1110 and a second wall 1120. Along the radial direction of the flame cap 1000, the first wall 1110 is farther away from the center of the flame cap 1000 relative to the second wall 1120, and the second wall 1120 is closer to the center of the flame cap 1000 relative to the first wall 1110. The first wall 1110 is provided with the aforementioned groove 1130.

[0045] In this embodiment, the first hole wall 1110 and the second hole wall 1120 are arranged along the radial direction of the flame cap 1000. The first hole wall 1110 is farther away from the center of the flame cap 1000 relative to the second hole wall 1120. That is, along the radial direction of the flame cap 1000, the distance between the first hole wall 1110 and the center of the flame cap 1000 is greater than the distance between the second hole wall 1120 and the center of the flame cap 1000. Since the flame hole 1100 is inclined from bottom to top away from the center of the flame cap 1000, the first hole wall 1110 and the second hole wall 1120 are also inclined from bottom to top away from the center of the flame cap 1000. By setting a groove 1130 in the first hole wall 1110, the flame generated in the groove 1130 floats upward (i.e. towards the second hole wall 1120) under the action of buoyancy. Another part of the airflow (the part of the airflow that does not enter the groove 1130 to form a vortex) flows roughly above the groove 1130 when it flows through the groove 1130. This arrangement makes it easier for the flame generated in the groove 1130 to ignite the other part of the airflow passing through the groove 1130, thus improving the flame stabilization effect.

[0046] Combination Figure 7As shown, in some embodiments, a portion of the groove 1130 is exposed through the burner hole 1100 in a top-to-bottom direction. In this embodiment, the orientation is based on the gas stove being in a normal installation position, with the side of the gas stove closest to the ground as the bottom and the side away from the ground as the top. With a portion of the groove 1130 exposed through the burner hole 1100 in a top-to-bottom direction, when observing the burner cap 1000 from above, a portion of the groove 1130 can be seen within the burner hole 1100, but the other portion is not visible. The other portion of the groove 1130 is blocked by the second hole wall 1120 of the burner hole 1100. This makes it easier for some airflow to enter the groove 1130 and form a vortex when the airflow flows along the burner hole 1100. Since a portion of the groove 1130 is exposed through the burner hole 1100, meaning a portion of the groove 1130 is open from bottom to top, it is easier for the gas in the groove 1130 to be ignited by an external ignition needle, thus generating a flame in the groove 1130.

[0047] Combination Figure 7 and Figure 8 As shown, the groove 1130 has an opening 1133, which has a first position 1134 and a second position. Along the radial direction of the flame cap 1000, the first position 1134 is the furthest position of the opening 1133 from the center of the flame cap 1000, while the second position 1135 is the closest position of the opening 1133 to the center of the flame cap 1000. The distance between the first position 1134 and the center of the flame cap 1000 is da, and the distance between the second position 1135 and the center of the flame cap 1000 is d. b. The distance between the edge 1121 of the second hole wall 1120 and the center of the flame cap 1000 is dc, which satisfies the condition da>dc>db. In this way, a part of the slot 1133 can be exposed in the flame hole 1100 in the direction from top to bottom, while the other part of the slot 1133 is blocked by the second hole wall 1120 in the direction from top to bottom. The exposed part of the slot 1133 realizes the exposure of the corresponding part of the groove 1130, and the blocked part of the slot 1133 realizes the blocking of the corresponding part of the groove 1130.

[0048] With dc > db, when the airflow flows along the flame hole 1100, the airflow first passes through the second position 1135. When the airflow passes through the second position 1135, it is still in the flame hole 1100 and cannot immediately leave the flame hole 1100 (because it is still blocked by the second hole wall 1120). This allows a part of the airflow to enter the groove 1130 to form a vortex. With da > dc, a part of the groove 1130 is exposed in the flame hole 1100 from top to bottom, which makes it convenient to ignite the gas in the groove 1130 by the ignition needle and generate a flame in the groove 1130.

[0049] Combination Figures 1 to 5As shown, in some embodiments, the flame holes 1100 are arranged in a direction around the center of the flame cap 1000. The flame holes 1100 in the figure are in an annular shape around the center of the flame cap 1000, so that the flame holes 1100 can form a continuous annular flame in the direction around the center of the flame cap 1000. Of course, the annular flame holes 1100 in the figure can also be divided into multiple (two or more), and each flame hole 1100 is arranged in a direction around the center of the flame cap 1000.

[0050] Furthermore, Figures 1 to 5 As shown, in some embodiments, the groove 1130 is arranged along the direction surrounding the center of the flame cap 1000. As shown in the figure, the groove 1130 is an annular groove, which, together with the annular slit design of the flame hole 1100, can stabilize the flame hole 1100 in the direction surrounding the center of the flame hole 1100.

[0051] combine Figures 1 to 5 As shown, in some embodiments, the burner cap 1000 includes a first burner cap 1210 and a second burner cap 1220. The first burner cap 1210 surrounds the second burner cap 1220, and a flame outlet hole 1100 is provided between the first burner cap 1210 and the second burner cap 1220. That is, the first burner cap 1210 forms a first hole wall 1110, and the second burner cap 1220 forms a second hole wall 1120. With this arrangement, the first burner cap 1210 and the second burner cap 1220 can be manufactured separately and cooperate with each other when installed on the burner head 2000.

[0052] Taking the annular flame hole 1100 in the attached diagram as an example, when the flame hole 1100 is inclined upwards away from the center of the flame cap 1000, the flame hole 1100 gradually expands from bottom to top. When the wall of the flame hole 1100 includes a first wall 1110 and a second wall 1120, the first wall 1110 surrounds the second wall 1120. The edge 1121 of the second wall 1120 is the radial edge of the second flame cap 1220.

[0053] The second aspect of this application discloses a burner, combined with Figures 1 to 8As shown, the burner includes a burner head 2000 and the aforementioned burner cap 1000. The burner cap 1000 covers the burner head 2000 and is provided with a fire hole 1100. The wall of the fire hole 1100 is provided with a groove 1130, and the gas in the groove 1130 is suitable for being ignited. When the airflow flows along the flame hole 1100, part of the airflow enters the groove 1130 from the slot 1133, forming a vortex in the groove 1130. Another part of the airflow passes through the groove 1130 and exits from the flame hole 1100. Due to the formation of the vortex in the groove 1130, igniting the gas in the groove 1130 can generate a stable flame. When the other part of the airflow passes through the groove 1130, it is ignited by the flame generated in the groove 1130. Since the groove 1130 is located on the wall of the flame hole 1100, the other part of the airflow about to exit the flame hole 1100 can be ignited by the flame generated in the groove 1130 before it leaves the flame hole 1100. This prevents the flame from leaving the flame hole 1100 and effectively prevents flame lift-off. It is understood that the burner cap 1000 of this embodiment adopts the technical solution of the above embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0054] Combination Figures 1 to 6 As shown, in some embodiments, the burner head 2000 is provided with a receiving cavity 2100, and the burner cover 1000 is placed on the burner head 2000 to enclose the receiving cavity 2100, so that the burner hole 1100 communicates with the receiving cavity 2100, and the receiving cavity 2100 is suitable for receiving blown air and gas.

[0055] Specifically, the burner head 2000 can be a one-piece molded structure or a series of separate components connected and fixed together. The burner cap 1000 can also be a one-piece molded structure or a series of separate components connected and fixed together. When the burner cap 1000 is placed over the burner head 2000, it encloses the receiving cavity 2100, allowing forced air and fuel gas to enter the receiving cavity 2100 and then exit from the burner holes 1100. Generally, forced air and fuel gas enter the receiving cavity 2100 in the following manner.

[0056] The gas source is bottled liquefied petroleum gas (LPG) or piped natural gas. The gas output from the gas valve is ejected through a nozzle and injected into the receiving chamber 2100. Simultaneously, forced air is supplied during the gas injection into the receiving chamber 2100. This forced air can be generated by fluid machinery, such as through forced air supply from a blower 4000. The forced air and gas enter the receiving chamber 2100 and are then ejected from the burner port 1100 (this forced air is primary air). An ejector tube 3000 can be provided, connected to the receiving chamber 2100. The nozzle is aimed at the ejector tube 3000 to inject gas. The ejector tube 3000 is connected to a blower 4000, which provides forced air to the ejector tube 3000. The forced air and gas are transported to the receiving chamber 2100 and then ejected from the burner port 1100.

[0057] In related technologies, primary air is provided by natural ejection. This means that as the gas is ejected from the nozzle and enters the receiving cavity 2100, ambient air is simultaneously ejected into the ejector tube 3000 along with the gas injection (this portion of air entering through ejection is called ejector air, or primary air). Compared to ejector air, forced air provides more oxygen, which is beneficial for the gas ejected from the burner hole 1100 to be in a rich oxygen combustion state. Although the flow rate of forced air is higher than that of ejector air, in this embodiment, the groove 1130 is provided to stabilize the flame formed by the burner hole 1100. This ensures that the gas ejected from the burner hole 1100 is in a rich oxygen combustion state and also stabilizes the flame, thus greatly improving the combustion efficiency of the burner.

[0058] The third aspect of this application discloses a gas stove, which includes the above-mentioned burner. The gas stove can be equipped with one burner, two burners, three burners or more according to actual needs. The burner of the gas stove in this embodiment adopts the technical solution of the above embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0059] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A flame cap (1000), characterized in that, The flame cap (1000) is provided with a flame hole (1100), the wall of the flame hole (1100) is provided with a groove (1130), and the gas in the groove (1130) is suitable for being ignited.

2. The flame cap (1000) as described in claim 1, characterized in that, The groove (1130) has a bottom wall (1131) and a side wall (1132), the bottom wall (1131) and the side wall (1132) intersect and the included angle is 70° to 110°.

3. The flame cap (1000) as described in claim 2, characterized in that, The included angle is 90°.

4. The flame cap (1000) as described in claim 1, characterized in that, The groove (1130) has a depth of H and a width of L along the first direction, satisfying L = 2H to 4H. The first direction is the flow direction of the airflow along the fire hole (1100).

5. The flame cap (1000) as described in claim 1, characterized in that, The fire hole (1100) is inclined from bottom to top away from the center of the fire cover (1000).

6. The flame cap (1000) as described in claim 5, characterized in that, The fire hole (1100) has a first hole wall (1110) and a second hole wall (1120) along the radial direction of the fire cap (1000). The first hole wall (1110) is farther away from the center of the fire cap (1000) relative to the second hole wall (1120), and the second hole wall (1120) is closer to the center of the fire cap (1000) relative to the first hole wall (1110). The first hole wall (1110) is provided with the groove (1130).

7. The flame cap (1000) as described in claim 6, characterized in that, A portion of the groove (1130) is exposed at the fire hole (1100) in a top-to-bottom direction.

8. The flame cap (1000) as described in claim 6, characterized in that, The groove (1130) has a slot (1133), the slot (1133) has a first position (1134) and a second position (1135) along the radial direction of the flame cap (1000). The first position (1134) is the farthest position of the slot (1133) from the center of the flame cap (1000), and the second position (1135) is the closest position of the slot (1133) to the center of the flame cap (1000). The distance between the first position (1134) and the center of the flame cap (1000) is da, the distance between the second position (1135) and the center of the flame cap (1000) is db, and the distance between the edge (1121) of the second hole wall (1120) and the center of the flame cap (1000) is dc, satisfying da > dc > db.

9. The flame cap (1000) as described in claim 1, characterized in that, The fire hole (1100) is arranged in a direction around the center of the fire cap (1000).

10. The flame cap (1000) as described in claim 9, characterized in that, The groove (1130) is arranged in a direction around the center of the fire cap (1000).

11. The flame cap (1000) as described in any one of claims 1 to 9, characterized in that, The flame cap (1000) includes a first flame cap (1210) and a second flame cap (1220). The first flame cap (1210) surrounds the second flame cap (1220). The flame hole (1100) is provided between the first flame cap (1210) and the second flame cap (1220). The first flame cap (1210) is provided with a first hole wall (1110) of the flame hole (1100), and the second flame cap (1220) is provided with a second hole wall (1120) of the flame hole (1100).

12. A burner, characterized in that, It includes a burner head (2000) and a flame cover (1000) as described in any one of claims 1 to 11, the flame cover (1000) being disposed on the burner head (2000).

13. The burner as claimed in claim 12, characterized in that, The burner head (2000) is provided with a receiving cavity (2100), the fire hole (1100) is connected to the receiving cavity (2100), and the receiving cavity (2100) is adapted to receive blast air and fuel gas.

14. A gas stove, characterized in that, Includes the burner as described in claim 12 or 13.

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