Inner ring fire cover and combustor

Abstract

The utility model provides an inner ring fire cover and a combustor, and relates to the technical field of cooking utensils. The inner ring fire cover comprises an upper fire cover body and a lower fire cover body, the upper fire cover body detachably covers the lower fire cover body to form groove fire holes, and the groove fire holes are convenient to clean. A circle of flame stabilizing circular seam is arranged on the outer side of the fire cover in the circumferential direction, the flame stabilizing circular seam is arranged above the groove fire holes, and the flame stabilizing circular seam can well act on the root portions of the upper half portions of flames of the groove fire holes to play a role in flame stabilizing. Flame stabilizing holes are formed in the upper fire cover, the upper ends of the flame stabilizing holes communicate with flame stabilizing circular seams, the lower ends of the flame stabilizing holes communicate with groove fire holes, the multiple flame stabilizing holes communicate with the multiple groove fire holes and the flame stabilizing circular seams, gas can be guided to the flame stabilizing circular seams through the flame stabilizing holes, and the gas can be shunted and decelerated, so that the inner ring fire cover is not prone to leaving flames during combustion, and combustion is more stable; the flame stabilizing holes are formed in the upper fire cover, so that overflowing liquid is not prone to entering the flame stabilizing holes, the flame stabilizing holes are not prone to being blocked, and the inner ring fire cover can be conveniently kept clean.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to an inner ring fire cover and a burner. Background Art

[0002] Traditional fire covers usually use an integrated cylindrical fire hole and a flame-stabilizing ring seam. The cylindrical fire hole and the flame-stabilizing ring seam are easily blocked by oil and dirt, and are not easy to clean. To facilitate cleaning, a split slot-type fire hole is usually used.

[0003] The inner ring fire cover of the split slot-type fire hole in the prior art has poor flame stabilization and is prone to flame separation under cold and high pressure conditions. In order to improve the flame stabilization effect, a flame stabilization hole is usually set above the slot fire hole. The flame stabilization hole has a small diameter and a large depth. The flame stabilization hole is horizontal and is easily blocked by overflow. It is also difficult to clean and dredge the flame stabilization hole after it is blocked. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art that the inner ring fire cover has poor flame stabilization, the flame stabilization holes are easily blocked by overflow liquid, and it is not easy to clean, and provide an inner ring fire cover and a burner.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides an inner ring fire cover, the inner ring fire cover comprises an upper fire cover and a lower fire cover, the bottom of the upper fire cover has a plurality of inwardly concave grooves, the upper fire cover can be detachably covered on the lower fire cover, so that a central cavity is formed between the upper fire cover and the lower fire cover, and a slot fire hole is formed through the groove, and the slot fire hole communicates the central cavity with the outside;

[0007] A circle of flame-stabilizing annular seam is provided on the circumferential outer side of the upper fire cover, and the flame-stabilizing annular seam is provided above the slot fire hole. A flame-stabilizing hole is provided inside the upper fire cover, and the upper end of the flame-stabilizing hole is connected to the flame-stabilizing annular seam, and the lower end of the flame-stabilizing hole is connected to the slot fire hole. Multiple flame-stabilizing holes are connected to multiple slot fire holes and the flame-stabilizing annular seam.

[0008] In this scheme, the inner ring fire cover includes an upper fire cover and a lower fire cover. The upper fire cover can be detachably covered on the lower fire cover to form a slot fire hole, which is convenient for cleaning the slot fire hole. A circle of flame stabilizing annular seams is arranged above the slot fire hole. The flame stabilizing annular seams can well act on the root of the upper half of the flame of the slot fire hole to stabilize the flame. The upper end of the flame stabilizing hole is connected to the flame stabilizing annular seams, and the lower end of the flame stabilizing hole is connected to the slot fire hole. Multiple flame stabilizing holes are connected to multiple slot fire holes and flame stabilizing annular seams. The flame stabilizing holes can guide the fuel gas to the flame stabilizing annular seams, and the fuel gas can be diverted and decelerated, so that the inner ring fire cover is not easy to separate from the flame during combustion, and the combustion is more stable. The flame stabilizing holes are arranged inside the upper fire cover, so that the overflow is not easy to enter the flame stabilizing holes, and the flame stabilizing holes are not easy to be blocked, so that the inner ring fire cover can be kept clean.

[0009] Preferably, the flame-stabilizing ring seam is recessed radially inwardly of the upper fire cover, and the flame-stabilizing hole extends vertically.

[0010] In the present scheme, the flame-stabilizing ring seam is recessed radially inwardly of the upper fire cover, so that overflowing liquid is not easy to enter the flame-stabilizing ring seam and the flame-stabilizing ring seam is not easy to be blocked. The flame-stabilizing hole extends vertically, and even if overflowing liquid enters the flame-stabilizing hole, the overflowing liquid can flow away quickly under the action of gravity. Moreover, the depth of the vertically extending flame-stabilizing hole is relatively small, so as to avoid the flame-stabilizing hole being blocked by overflowing liquid, thereby facilitating the inner ring fire cover to remain clean.

[0011] Preferably, the flame stabilizing hole is arranged close to the air outlet of the slot fire hole.

[0012] In this solution, the flame stabilizing hole is arranged close to the gas outlet of the slot fire hole, so as to better divert and reduce the speed of the position of the slot fire hole close to the gas outlet, slow down the speed of the gas flowing out of the gas outlet of the slot fire hole, and further improve the flame stabilizing effect.

[0013] Preferably, the top of the upper fire cover extends horizontally outward along the circumference of the upper fire cover to form a flange, and the flame-stabilizing annular seam is arranged below the flange.

[0014] In this solution, the flame stabilizing ring seam is arranged below the flange, and the flange can prevent the overflow from above from entering the flame stabilizing ring seam, thereby preventing the flame stabilizing ring seam from being blocked, and facilitating the inner ring fire cover to remain clean. The flange can also press down the flames of the slot fire hole and the flame stabilizing ring seam, further playing a flame stabilizing role.

[0015] Preferably, the outer peripheral side of the flange is inclined obliquely upward along the radial inner side of the upper fire cover toward the radial outer side of the upper fire cover.

[0016] In this scheme, the flange is tilted upward to ensure that the maximum diameter of the flange remains unchanged, that is, the effect of blocking overflow is not weakened. The inclined design is conducive to the secondary air supplementation of the flame stabilizing ring seam by external air, so that the combustion is more complete and the flame is shorter and more stable, thereby improving the flame stabilizing performance of the flame stabilizing ring seam to the slot fire hole.

[0017] Preferably, the upper ignition cover is provided with an ignition hole, and the flange extends radially outward from the upper ignition hole to form a protrusion, the bottom surface of the protrusion is a plane, and the plane is used to cooperate with the ignition needle, and the protrusion is arranged above the ignition needle.

[0018] In this solution, the bottom surface of the protrusion is a plane, which cooperates with the ignition needle to form a combination of a positive rod and a negative plate. When the ignition distance of the electrical parameters of the igniter remains unchanged, the breakdown voltage is reduced, thereby improving the ignition success rate.

[0019] Preferably, the upper ignition cover is provided with an ignition hole, and the flame stabilizing hole connects the ignition hole and the flame stabilizing ring seam.

[0020] In this scheme, the flame stabilizing hole connects the ignition hole and the flame stabilizing ring gap, which can slow down the speed of the gas flowing out of the ignition hole and increase the gas concentration near the ignition hole. The flame stabilizing hole can guide the gas to the flame stabilizing ring gap near the tip of the ignition needle, increase the gas concentration near the tip of the ignition needle, and improve the ignition success rate.

[0021] Preferably, the ignition hole comprises a main ignition hole and an auxiliary ignition hole, and a plurality of the auxiliary ignition holes are arranged on both sides of the main ignition hole.

[0022] In this solution, multiple auxiliary ignition holes are provided on both sides of the main ignition. The auxiliary ignition holes serve to assist the ignition of the main ignition hole. The auxiliary ignition holes can supplement the main ignition hole with the gas required for ignition, making the gas concentration near the ignition hole higher and improving the ignition success rate.

[0023] Preferably, ignition grooves extending vertically are provided on both sides of the ignition hole, and the ignition grooves are connected to the flame-stabilizing ring seam.

[0024] In this solution, ignition grooves extending vertically are provided on both sides of the ignition hole. The ignition grooves are connected to the flame stabilizing ring seam, which can guide the gas on both sides of the main fire hole and the flame stabilizing ring seam to the vicinity of the ignition hole, thereby increasing the gas concentration near the ignition hole and improving the ignition success rate.

[0025] The utility model also provides a burner, which comprises the inner ring fire cover mentioned above.

[0026] In this embodiment, the burner includes the same effect as the inner ring fire cover described above.

[0027] The positive and progressive effects of the utility model are:

[0028] The utility model provides an inner ring fire cover and a burner, wherein the inner ring fire cover comprises an upper fire cover and a lower fire cover, wherein the upper fire cover can be detachably covered on the lower fire cover to form a slot fire hole, which is convenient for cleaning the slot fire hole. A circle of flame stabilizing annular seams is arranged above the slot fire hole, and the flame stabilizing annular seams can well act on the root of the upper half of the flame of the slot fire hole to play a flame stabilizing role, the upper end of the flame stabilizing hole is connected to the flame stabilizing annular seams, the lower end of the flame stabilizing hole is connected to the slot fire hole, and a plurality of flame stabilizing holes are connected to a plurality of slot fire holes and the flame stabilizing annular seams, and the flame stabilizing hole can guide the fuel gas to the flame stabilizing annular seams, and the fuel gas can be diverted and decelerated, so that the inner ring fire cover is not easy to separate from the flame during combustion, and the combustion is more stable, and the flame stabilizing hole is arranged inside the upper fire cover, so that the overflow is not easy to enter the flame stabilizing hole, and the flame stabilizing hole is not easy to be blocked, so that the inner ring fire cover is convenient for keeping clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the inner ring fire cover according to an embodiment of the utility model.

[0030] Figure 2 It is a cross-sectional view of an inner ring fire cover according to an embodiment of the utility model.

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper fire cover according to an embodiment of the utility model.

[0032] Figure 4 The figure is a bottom view of an upper fire cover according to an embodiment of the utility model.

[0033] Figure 5 It is a transverse cross-sectional view of an upper fire cover according to an embodiment of the utility model.

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the lower fire cover according to an embodiment of the utility model.

[0035] Description of reference numerals:

[0036] Inner ring fire cover 100

[0037] Lower fire cover 200

[0038] Lower flame stabilizing tank 210

[0039] Fire cover 300

[0040] Groove 310

[0041] Flame Stabilizing Ring Seam 320

[0042] Flame stabilizing hole 330

[0043] Flanging 340

[0044] Protrusion 341

[0045] Gap 342

[0046] Ignition hole 350

[0047] Main ignition hole 351

[0048] Auxiliary ignition hole 352

[0049] Ignition slot 360

[0050] Slot fire hole 400

[0051] First slot fire hole 410

[0052] Second slot fire hole 420

[0053] First hole section 430

[0054] Second hole section 440

[0055] Center cavity 500 DETAILED DESCRIPTION

[0056] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0057] This embodiment provides a burner, which includes an inner ring fire cover 100 .

[0058] like Figure 1 and Figure 2 As shown, the inner ring fire cover 100 includes an upper fire cover 300 and a lower fire cover 200. The bottom of the upper fire cover 300 has a plurality of inwardly concave grooves 310. The upper fire cover 300 can be detachably covered on the lower fire cover 200, so that a central cavity 500 is formed between the upper fire cover 300 and the lower fire cover 200, and a slot fire hole 400 is formed through the groove 310. The slot fire hole 400 connects the central cavity 500 and the outside. The upper fire cover 300 can be detachably covered on the lower fire cover 200 to form the slot fire hole 400, which is convenient for cleaning the slot fire hole 400.

[0059] A circle of flame-stabilizing annular seam 320 is provided on the circumferential outer side of the upper fire cover 300, and the flame-stabilizing annular seam 320 is provided above the slot fire hole 400. A flame-stabilizing hole 330 is provided inside the upper fire cover 300. The upper end of the flame-stabilizing hole 330 is connected to the flame-stabilizing annular seam 320, and the lower end of the flame-stabilizing hole 330 is connected to the slot fire hole 400. Multiple flame-stabilizing holes 330 connect multiple slot fire holes 400 and the flame-stabilizing annular seam 320. A circle of flame-stabilizing annular seam 320 is provided above the slot fire hole 400. The flame-stabilizing annular seam 320 can act well on the root of the upper half of the flame of the slot fire hole 400 to play a flame-stabilizing role. The upper end of the flame-stabilizing hole 330 is connected to the flame-stabilizing annular seam 320, and the lower end of the flame-stabilizing hole 330 is connected to the slot fire hole 400. Multiple flame-stabilizing holes 330 are connected to multiple slot fire holes 400 and the flame-stabilizing annular seam 320. The flame-stabilizing holes 330 can guide the fuel gas to the flame-stabilizing annular seam 320, and the fuel gas can be diverted and slowed down, so that the inner ring fire cover 100 is not easy to separate from the flame during combustion, and the combustion is more stable. The flame-stabilizing holes 330 are arranged inside the upper fire cover 300, so that overflow is not easy to enter the flame-stabilizing holes 330, and the flame-stabilizing holes 330 are not easy to be blocked, so that the inner ring fire cover 100 can be kept clean.

[0060] like Figure 2 As shown, the flame-stabilizing ring seam 320 is recessed radially inwardly of the upper fire cover 300, so that overflowing liquid is not easy to enter the flame-stabilizing ring seam 320, and the flame-stabilizing ring seam 320 is not easy to be blocked. The flame-stabilizing hole 330 extends vertically, and even if overflowing liquid enters the flame-stabilizing hole 330, the overflowing liquid can flow away quickly under the action of gravity, and the depth of the vertically extending flame-stabilizing hole 330 is relatively small, so as to avoid the flame-stabilizing hole 330 being blocked by overflowing liquid, thereby facilitating the inner ring fire cover 100 to keep clean.

[0061] In this embodiment, the flame stabilizing annular gap 320 is horizontally recessed toward the radial inner side of the upper fire cover 300. In other embodiments, the flame stabilizing annular gap 320 may be recessed obliquely toward the radial inner side of the upper fire cover 300, or other recessing directions of the flame stabilizing annular gap 320 deemed appropriate by those skilled in the art may be selected.

[0062] In this embodiment, the flame stabilizing hole 330 extends vertically. In other embodiments, the flame stabilizing hole 330 may also extend obliquely, or other extending directions of the flame stabilizing hole 330 considered appropriate by those skilled in the art may be selected.

[0063] In this embodiment, the flame stabilizing hole 330 is arranged near the gas outlet of the slot fire hole 400, so that the position near the gas outlet of the slot fire hole 400 can be better diverted and decelerated, slowing down the speed of the gas flowing out of the gas outlet of the slot fire hole 400, and further improving the flame stabilizing effect. In other embodiments, the flame stabilizing hole 330 can also be arranged in the middle of the slot fire hole 400, and other positions for setting the flame stabilizing hole 330 that are deemed appropriate by those skilled in the art can also be selected.

[0064] like Figure 1As shown, in this embodiment, the inner ring fire cover 100 is provided with two types of slot fire holes 400, namely, a first slot fire hole 410 and a second slot fire hole 420. The two slot fire holes 400 have different cross-sectional areas and are arranged at cross intervals, so that the load of the slot fire holes 400 is reasonable, the gas burns more fully, the smoke generated by the gas combustion is reduced, and the overall combustion efficiency of the inner ring fire cover 100 is improved. In other embodiments, one or more slot fire holes 400 with different cross-sectional areas may also be provided, and those skilled in the art may determine the arrangement of the slot fire holes 400 according to actual needs.

[0065] like Figure 2 As shown, in this embodiment, the diameter of the flame stabilizing hole 330 connecting the first slot fire hole 410 and the second slot fire hole 420 is d1, 1.0mm≤d1≤1.4mm. In other embodiments, those skilled in the art can determine the specific diameter of the flame stabilizing hole 330 as needed.

[0066] In this embodiment, the height of the flame stabilizing ring slit 320 is h1, and the distance between the lower edge of the flame stabilizing ring slit 320 and the upper edge of the slot fire hole 400 is h3. Those skilled in the art can determine the size of h1 and h3 according to specific needs.

[0067] like Figure 5 As shown, it can be seen from the transverse cross-sectional view of the upper fire cover 300 that the plurality of flame stabilizing holes 330 are evenly spaced on a circumference with a diameter of d, so that the gas flowing from the slot fire hole 400 to the flame stabilizing holes 330 is more even. In other embodiments, those skilled in the art can determine the specific arrangement of the flame stabilizing holes 330 as needed.

[0068] In this embodiment, the distance between the axis of the flame stabilizing hole 330 and the outer wall of the upper fire cover 300 is L1, and the diameter of the outer wall of the upper fire cover 300 is D, L1 = (Dd) / 2, d1≤L1≤2d1. The value of L1 should not be too small, otherwise the flame stabilizing ring gap 320 will release gas too quickly, making the ring gap fire too long and too large, unable to act on the root of the slot fire hole 400, and the flame stabilization is poor; the value of L2 should not be too large, otherwise the burning speed of the ring gap fire will be much greater than its gas supply speed, and the ring gap fire will easily burn to the inside of the inner ring fire cover 100, and it will not be able to act normally on the root of the slot fire hole 400 for flame stabilization.

[0069] like Figure 2As shown, in this embodiment, the slot fire hole 400 is sequentially provided with a first hole section 430 and a second hole section 440 along the radial inner side of the inner ring fire cover 100 toward the radial outer side of the inner ring fire cover 100, and the first hole section 430 and the second hole section 440 are bent, so that the depth of the slot fire hole 400 is increased without changing the inner and outer diameters of the inner ring fire cover 100, the path of the gas flowing through the slot fire hole 400 is increased, the resistance of the gas flowing out of the slot fire hole 400 is increased, and the flame stabilization performance of the inner ring fire cover 100 is improved. The first hole section 430 is obliquely arranged upward along the radial inner side of the inner ring fire cover 100 toward the radial outer side of the inner ring fire cover 100, which is conducive to introducing the gas entering the central cavity 500 from the bottom into the first hole section 430. The second hole section 440 is arranged horizontally, so that the gas flows out of the outlet of the second hole section 440 horizontally, reducing the flow rate of the gas flowing out of the second hole section 440, and improving the flame stabilization performance of the inner ring fire cover 100. In other embodiments, other specific structures of the slot fire hole 400 that are considered appropriate by those skilled in the art may also be selected.

[0070] like Figure 1-Figure 3 As shown, the top of the upper fire cover 300 extends horizontally outward along the circumference of the upper fire cover 300 to form a flange 340, and the flame stabilizing annular slit 320 is arranged below the flange 340. The flange 340 can prevent the overflow from above from entering the flame stabilizing annular slit 320, avoid the flame stabilizing annular slit 320 from being blocked, and facilitate the inner ring fire cover 100 to keep clean. The flange 340 can also press down the flames of the slot fire hole 400 and the flame stabilizing annular slit 320, further playing a flame stabilizing role.

[0071] In this embodiment, the distance between the upper edge of the flame stabilizing ring gap 320 and the lower edge of the flange 340 is h2, and those skilled in the art can determine the size of h2 according to specific needs.

[0072] In this embodiment, the outer peripheral side of the flange 340 is inclined upward along the radial inner side of the upper fire cover 300 toward the radial outer side of the upper fire cover 300. The oblique upward inclination of the flange 340 can ensure that the maximum diameter of the flange 340 remains unchanged, that is, the effect of blocking overflow is not weakened. The inclined design is conducive to the secondary air supplement of the flame stabilizing ring slit 320 by external air, so that the combustion is more complete and the flame is shorter and more stable, thereby improving the flame stabilizing performance of the flame stabilizing ring slit 320 for the slotted fire hole 400. In other embodiments, the outer peripheral side of the flange 340 can also be vertical, and other shapes of the outer peripheral side of the flange 340 that are considered appropriate by those skilled in the art can also be selected.

[0073] like Figure 1-Figure 4 As shown, the upper ignition cover 300 is provided with an ignition hole 350, and the flange 340 extends radially outward from the upper ignition cover 300 above the ignition hole 350 to form a protrusion 341, the bottom surface of the protrusion 341 is a plane, and the plane is used to cooperate with the ignition needle, and the protrusion 341 is arranged above the ignition needle.

[0074] When the electrical parameters of the igniter such as the power supply voltage e and the frequency f remain unchanged, that is, when the voltage provided by the output end of the igniter is constant, the ignition needle is the positive electrode, and the inner ring fire cover 100 is the negative electrode. The positive electrode discharges to the negative electrode, and the ignition needle discharges to the point or surface closest to it on the inner ring fire cover 100. When the breakdown voltage is lower, it is easier to discharge. From the discharge principle of the ignition needle, it can be known that when the positive electrode is a rod and the negative electrode is a plane, the breakdown voltage is the smallest. Therefore, the bottom surface of the protrusion 341 is a plane, which cooperates with the ignition needle to form a combination of a positive rod and a negative plate. When the ignition distance of the electrical parameters of the igniter remains unchanged, the breakdown voltage is reduced, thereby improving the ignition success rate.

[0075] In this embodiment, the bottom surface of the flange 340 is a plane. In other embodiments, only the bottom surface of the protrusion 341 can be set as a plane, or other configuration methods of the bottom surface of the flange 340 that are considered appropriate by those skilled in the art can be selected.

[0076] like Figure 1 As shown, the upper ignition cover 300 is provided with an ignition hole 350, and the flame stabilizing hole 330 connects the ignition hole 350 and the flame stabilizing ring seam 320, which can slow down the speed of the gas flowing out of the ignition hole 350 and increase the gas concentration near the ignition hole 350. The flame stabilizing hole 330 can guide the gas to the flame stabilizing ring seam 320 close to the tip of the ignition needle, increase the gas concentration near the tip of the ignition needle, and improve the ignition success rate.

[0077] The ignition hole 350 includes a main ignition hole 351 and an auxiliary ignition hole 352. A plurality of auxiliary ignition holes 352 are arranged on both sides of the main ignition hole 351. The auxiliary ignition holes 352 serve to assist the ignition of the main ignition hole and can supplement the main ignition hole with the gas required for ignition, thereby increasing the gas concentration near the ignition hole 350 and improving the ignition success rate.

[0078] In this embodiment, an auxiliary ignition hole 352 is respectively provided on both sides of the main ignition hole 351. In other embodiments, multiple auxiliary ignition holes 352 may be respectively provided on both sides of the main ignition hole 351, or other auxiliary ignition hole 352 arrangement methods deemed appropriate by those skilled in the art may be selected.

[0079] Ignition grooves 360 extending vertically are provided on both sides of the ignition hole 350. The ignition grooves 360 are connected to the flame stabilizing ring seam 320, and can guide the gas on both sides of the main fire hole and the flame stabilizing ring seam 320 to the vicinity of the ignition hole 350, thereby increasing the gas concentration near the ignition hole 350 and improving the ignition success rate.

[0080] In this embodiment, the ignition groove 360 ​​is in an arc shape. In other embodiments, other shapes of the ignition groove 360 ​​that are considered appropriate by those skilled in the art may also be selected.

[0081] like Figure 6As shown, in this embodiment, the lower fire cover 200 is provided with a plurality of lower flame stabilizing grooves 210 at intervals along the circumference of the lower fire cover 200. The lower flame stabilizing grooves 210 are provided below the slot fire hole 400 and communicate with the slot fire hole 400, and can play a pulling role on the flame at the root of the slot fire hole 400, and can further improve the flame stabilizing performance of the inner ring fire cover 100. The lower flame stabilizing grooves 210 are provided on the lower fire cover 200, thereby avoiding the structural strength of the upper fire cover 300 being weakened by being provided on the upper fire cover 300, and are convenient for manufacturing and processing, and the service life of the inner ring fire cover 100 is improved.

[0082] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship of the device or component in normal use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation at any time, and therefore cannot be understood as a limitation on the present invention in this regard.

[0083] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. An inner ring fire cover, characterized in that: The inner ring fire cover comprises an upper fire cover and a lower fire cover, the bottom of the upper fire cover has a plurality of inwardly concave grooves, the upper fire cover can be detachably covered on the lower fire cover, so that a central cavity is formed between the upper fire cover and the lower fire cover, and a slot fire hole is formed through the groove, and the slot fire hole communicates the central cavity with the outside; A circle of flame-stabilizing annular seam is provided on the circumferential outer side of the upper fire cover, and the flame-stabilizing annular seam is provided above the slot fire hole. A flame-stabilizing hole is provided inside the upper fire cover, and the upper end of the flame-stabilizing hole is connected to the flame-stabilizing annular seam, and the lower end of the flame-stabilizing hole is connected to the slot fire hole. Multiple flame-stabilizing holes are connected to multiple slot fire holes and the flame-stabilizing annular seam.

2. The inner ring fire cover according to claim 1, characterized in that: The flame stabilizing ring seam is recessed radially inwardly of the upper fire cover, and the flame stabilizing hole extends vertically.

3. The inner ring fire cover according to claim 1, characterized in that: The flame stabilizing hole is arranged close to the gas outlet of the slot fire hole.

4. The inner ring fire cover according to claim 1, characterized in that: The top of the upper fire cover horizontally extends outward along the circumference of the upper fire cover to form a flange, and the flame stabilizing annular seam is arranged below the flange.

5. The inner ring fire cover according to claim 4, characterized in that: The outer peripheral side of the flange is inclined upward along the radial inner side of the upper fire cover toward the radial outer side of the upper fire cover.

6. The inner ring fire cover according to claim 4, characterized in that: The upper ignition cover is provided with an ignition hole, and the flange extends radially outward from the upper ignition hole to form a protrusion, the bottom surface of the protrusion is a plane, and the plane is used to cooperate with the ignition needle, and the protrusion is arranged above the ignition needle.

7. The inner ring fire cover according to claim 1, characterized in that: The upper ignition cover is provided with an ignition hole, and the flame stabilizing hole is connected with the ignition hole and the flame stabilizing ring seam.

8. The inner ring fire cover according to claim 7, characterized in that: The ignition holes include a main ignition hole and an auxiliary ignition hole, and a plurality of the auxiliary ignition holes are arranged on both sides of the main ignition hole.

9. The inner ring fire cover according to claim 7, characterized in that: Ignition grooves extending vertically are provided on both sides of the ignition hole, and the ignition grooves are connected to the flame stabilizing ring seam.

10. A burner, characterized in that: It comprises an inner ring fire cover as described in any one of claims 1-9.

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