Inner ring fire cover and combustor
By designing an inner ring fire cover with an inclined guide surface and a radial limiting surface, the problems of inconvenient placement of the inner ring fire cover, poor flame stability and low structural strength in the prior art are solved, and a higher flame stabilization effect and a structure that is easy to clean is achieved.
Patent Information
- Application Number
- CN202420630070.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The upper and lower split structure of the inner ring fire cover in the prior art is not convenient for users to place it in place, resulting in unlimited radial positioning prone to leakage or flame removal, poor flame stability, low structural strength and inconvenient cleaning.
An inner ring fire cover is designed, including an upper fire cover and a lower fire cover. The upper fire cover is connected to the lower fire cover through an inclined guide surface. The first radial limiting surface and the second radial limiting surface are fitted to each other, limiting the radial displacement between the upper fire cover and the lower fire cover.
It improves the flame stabilization effect of the inner ring fire cover, avoids leakage or flame removal caused by radial deviation, enhances structural strength and facilitates cleaning.
Smart Images
Figure CN222669980U_ABST
Abstract
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] The fire cover of the split slot-type fire hole in the prior art has poor flame stability and is very prone to flame separation under cold and high-pressure conditions. The lack of radial position can easily lead to deviation and cause fire leakage or flame separation. If the position is limited by the cooperation of limiting ribs and grooves, it is not convenient for users to put them in place due to the small size of the limiting ribs and grooves, and the groove structure will destroy the structural strength of the fire cover and reduce the service life of the fire cover. The limiting ribs and grooves are also easy to hide dirt and are not easy to clean. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art that the upper and lower split structures of the inner ring fire cover are not convenient for users to put into place, there is no unlimited radial position resulting in fire leakage or flame separation, the flame stability is poor, the structural strength is low, and it is inconvenient to clean, and an inner ring fire cover and a burner are provided.
[0004] The utility model solves the above technical problems through the following technical solutions:
[0005] The utility model provides an inner ring fire cover, which comprises an upper fire cover and a lower fire cover, wherein the upper fire cover is detachably covered on the lower fire cover to form a central cavity and a plurality of slot fire holes, wherein the slot fire holes communicate with the central cavity and the outside;
[0006] The top surface of the lower fire cover has a first radial limiting surface, the bottom surface of the upper fire cover has a second radial limiting surface, the top surface of the lower fire cover and / or the bottom surface of the upper fire cover also have an inclined guide surface, and the first radial limiting surface and / or the second radial limiting surface surround the outer side of the inclined guide surface;
[0007] The upper fire cover is guided by the inclined guide surface to cover the lower fire cover so that the vertical center line of the upper fire cover and the vertical center line of the lower fire cover are located on the same straight line, and the first radial limiting surface and the second radial limiting surface are fitted and abutted against each other to limit the radial displacement between the upper fire cover and the lower fire cover.
[0008] In this solution, the inner ring fire cover includes an upper fire cover and a lower fire cover. The upper fire cover is guided by an inclined guide surface to cover the lower fire cover. The inclined guide surface can make the upper fire cover and the lower fire cover easier to assemble, convenient for production and manufacturing, and convenient for users to put them in place when using. The first radial limiting surface and the second radial limiting surface are fitted against each other to limit the radial displacement between the upper fire cover and the lower fire cover, avoid leaking fire or flame separation caused by radial displacement of the upper fire cover and the lower fire cover, and improve the overall flame stabilization effect of the inner ring fire cover. The first radial limiting surface and the second radial limiting surface are used to limit the radial displacement, which has little effect on the structural strength of the inner ring fire cover, is not easy to hide dirt, and is also easy to clean.
[0009] Preferably, the top surface of the lower fire cover and the bottom surface of the upper fire cover both have the inclined guide surface, and the inclined guide surface includes a first inclined guide surface and a second inclined guide surface;
[0010] The top surface of the lower fire cover has a first inclined guide surface, and the bottom surface of the upper fire cover has a second inclined guide surface, and the first inclined guide surface and the second inclined guide surface are in contact with each other.
[0011] In this solution, the top surface of the lower fire cover has a first inclined guide surface, and the bottom surface of the upper fire cover has a second inclined guide surface. The first inclined guide surface and the second inclined guide surface fit together, thereby more effectively guiding the upper fire cover to fit over the lower fire cover, facilitating production and assembly, and making it easier for users to put it in place during use.
[0012] Preferably, both the first inclined guide surface and the second inclined guide surface are inclined upwardly and obliquely from the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover.
[0013] In the present scheme, the first inclined guide surface and the second inclined guide surface are both inclined upward from the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover, so as to facilitate the upper fire cover to cover the lower fire cover downward, and the first inclined guide surface and the second inclined guide surface close to the radial inner side of the inner ring fire cover both extend in the covering direction, which can more effectively guide the user to put it into place, facilitate production and assembly, and also make it easier for the user to put it into place during use.
[0014] Preferably, the first radial limiting surface extends upward along the vertical direction from the outer side of the first inclined guide surface, and the second radial limiting surface extends downward along the vertical direction from the outer side of the second inclined guide surface.
[0015] In this solution, the first radial limiting surface and the second radial limiting surface both extend in the vertical direction, so that the force bearing area in the radial direction is larger, and radial limiting can be performed more effectively to avoid fire leakage or flame separation caused by radial deviation of the upper fire cover and the lower fire cover.
[0016] Preferably, part of the first radial limiting surface or the second radial limiting surface is located inside the slot fire hole.
[0017] In this solution, part of the first radial limiting surface or the second radial limiting surface is located inside the slot fire hole, thereby slowing down the flow of gas passing through the slot fire hole, thereby making the flame stabilization effect of the inner ring fire cover better.
[0018] Preferably, the top surface of the lower fire cover further has a first plane, and the bottom surface of the upper fire cover further has a second plane, and the first plane and the second plane are in contact with each other.
[0019] In this solution, the first plane and the second plane fit together, so that the upper fire cover and the lower fire cover can be assembled more tightly. The lower fire cover can better support the upper fire cover, improve the stability of the inner ring fire cover, and also change the flow direction of the gas, which can slow down the flow and reduce the speed of the gas.
[0020] Preferably, the slot fire hole is sequentially arranged with a first hole segment and a second hole segment along the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover, the first hole segment and the second hole segment form a bend, the first hole segment is arranged obliquely upward along the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover, and the second hole segment is arranged horizontally.
[0021] In this scheme, the slot fire hole is sequentially arranged with a first hole segment and a second hole segment along the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover, and the first hole segment and the second hole segment are bent, thereby increasing the depth of the slot fire hole without changing the inner and outer diameters of the inner ring fire cover, increasing the path of the gas flowing through the slot fire hole, increasing the resistance of the gas flowing out of the slot fire hole, and improving the flame stabilization performance of the inner ring fire cover. The first hole segment is arranged obliquely upward along the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover, which is conducive to introducing the gas entering the central cavity from below into the first hole segment. The second hole segment is arranged horizontally, so that the gas flows out of the outlet of the second hole segment horizontally, reducing the flow rate of the gas flowing out of the second hole segment, and improving the flame stabilization performance of the inner ring fire cover.
[0022] Preferably, an upper flame stabilizing ring seam is provided on the outer peripheral side of the upper fire cover, the upper flame stabilizing ring seam is partially connected to the slot fire hole, and the upper top surface of the upper flame stabilizing ring seam is at least partially flush with the upper top surface of the slot fire hole.
[0023] In the present scheme, the upper flame-stabilizing ring seam is partially connected to the slot fire hole, and the upper top surface of the upper flame-stabilizing ring seam is at least partially flush with the upper top surface of the slot fire hole, thereby being able to pull the flame at the root of the slot fire hole, thereby improving the flame-stabilizing effect, and also facilitating the gas to flow between the slot fire holes through the upper flame-stabilizing ring seam, making the combustion more uniform and the flame-stabilizing effect better.
[0024] Preferably, the upper ignition cover further includes an ignition hole, and the upper flame-stabilizing ring seam is partially connected to the ignition hole.
[0025] In this solution, the upper flame-stabilizing ring seam is partially connected to the ignition hole, so that after the ignition hole is ignited, the flame can ignite the slot fire holes on the left and right sides more quickly through the upper flame-stabilizing ring seam, making the circumferential fire transfer speed of the inner ring fire cover faster.
[0026] The utility model also provides a burner, which comprises the inner ring fire cover mentioned above.
[0027] In this embodiment, the burner includes the same effect as the inner ring fire cover described above.
[0028] The positive and progressive effects of the utility model are:
[0029] 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 is guided by an inclined guide surface to cover the lower fire cover, and the inclined guide surface can make the upper fire cover and the lower fire cover easier to assemble, convenient for production and manufacturing, and convenient for users to put them in place during use. The first radial limiting surface and the second radial limiting surface are fitted against each other to limit the radial displacement between the upper fire cover and the lower fire cover, thereby avoiding fire leakage or flame separation caused by radial displacement of the upper fire cover and the lower fire cover, and improving the overall flame stabilization effect of the inner ring fire cover. The first radial limiting surface and the second radial limiting surface are used to limit the radial displacement, which has little effect on the structural strength of the inner ring fire cover, is not easy to hide dirt, and is also easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] 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.
[0031] Figure 2 It is a sectional isometric view of an inner ring fire cover according to an embodiment of the utility model.
[0032] Figure 3 It is a cross-sectional view of an inner ring fire cover according to an embodiment of the utility model.
[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper fire cover according to an embodiment of the utility model.
[0034] Figure 5 The figure is a bottom view of an upper fire cover according to an embodiment of the utility model.
[0035] 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.
[0036] Figure 7 It is a top view of a lower fire cover according to an embodiment of the utility model.
[0037] Description of reference numerals:
[0038] Inner ring fire cover 100
[0039] Lower fire cover 200
[0040] The first radial limiting surface 210
[0041] The first inclined guide surface 220
[0042] First plane 230
[0043] Lower flame stabilizing tank 240
[0044] Fire cover 300
[0045] The second radial limiting surface 310
[0046] The second inclined guide surface 320
[0047] Second plane 330
[0048] Upper flame stabilizing ring seam 340
[0049] Flame stabilizing hole 350
[0050] Flanging 360
[0051] Slot fire hole 400
[0052] First hole section 410
[0053] Second hole section 420
[0054] First slot fire hole 430
[0055] Second slot fire hole 440
[0056] Ignition hole 500
[0057] Ignition slot 510
[0058] Center cavity 600 DETAILED DESCRIPTION
[0059] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.
[0060] This embodiment provides a burner, which includes an inner ring fire cover 100 .
[0061] like Figure 1-Figure 3 As shown, the inner ring fire cover 100 includes an upper fire cover 300 and a lower fire cover 200. The upper fire cover 300 can be detachably covered on the lower fire cover 200 to form a central cavity 600 and a plurality of slot fire holes 400. The slot fire holes 400 connect the central cavity 600 with the outside.
[0062] The slotted fire hole 400 may be located on the upper fire cover 300 and / or the lower fire cover 200. In the present embodiment, the slotted fire hole 400 is provided on the upper fire cover 300, and the bottom of the upper fire cover 300 has a plurality of inwardly concave grooves. The upper fire cover 300 can be detachably covered on the lower fire cover 200, and the slotted fire hole 400 is formed by the grooves. In other embodiments, the slotted fire hole 400 may also be provided on the lower fire cover 200, and the top of the lower fire cover 200 may also have a plurality of inwardly concave grooves, and the slotted fire hole 400 is formed by the grooves. Other positions for setting the slotted fire hole 400 that are deemed appropriate by those skilled in the art may also be selected.
[0063] In this embodiment, the slotted fire holes 400 include two types of slotted fire holes 400, namely, a first slotted fire hole 430 and a second slotted fire hole 440. The two types of slotted fire holes 400 have different cross-sectional areas and are arranged at cross-intervals, so that the load of the slotted 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 slotted fire holes 400 with different cross-sectional areas may also be arranged, and those skilled in the art may determine the arrangement of the slotted fire holes 400 according to actual needs.
[0064] The top surface of the lower fire cover 200 has a first radial limiting surface 210, and the bottom surface of the upper fire cover 300 has a second radial limiting surface 310. The top surface of the lower fire cover 200 and / or the bottom surface of the upper fire cover 300 also have an inclined guide surface, and the first radial limiting surface 210 and / or the second radial limiting surface 310 surround the outer side of the inclined guide surface.
[0065] The upper fire cover 300 is guided by the inclined guide surface to cover the lower fire cover 200 so that the vertical center line of the upper fire cover 300 and the vertical center line of the lower fire cover 200 are located on the same straight line, and the first radial limiting surface 210 and the second radial limiting surface 310 are fitted against each other to limit the radial displacement between the upper fire cover 300 and the lower fire cover 200.
[0066] The inclined guide surface can make the upper fire cover 300 and the lower fire cover 200 easier to assemble, convenient for production and manufacturing, and also convenient for users to put them in place when using. The first radial limiting surface 210 and the second radial limiting surface 310 are fitted against each other to limit the radial displacement between the upper fire cover 300 and the lower fire cover 200, avoid leaking fire or flame separation caused by radial displacement of the upper fire cover 300 and the lower fire cover 200, and improve the overall flame stabilization effect of the inner ring fire cover 100. The first radial limiting surface 210 and the second radial limiting surface 310 are used to limit radial displacement, which has little effect on the structural strength of the inner ring fire cover 100, is not easy to hide dirt, and is also easy to clean.
[0067] like Figure 4-Figure 7As shown, in this embodiment, the top surface of the lower fire cover 200 and the bottom surface of the upper fire cover 300 both have inclined guide surfaces, and the inclined guide surfaces include a first inclined guide surface 220 and a second inclined guide surface 320. The top surface of the lower fire cover 200 has the first inclined guide surface 220, and the bottom surface of the upper fire cover 300 has the second inclined guide surface 320. The first inclined guide surface 220 and the second inclined guide surface 320 fit each other, so that the upper fire cover 300 can be more effectively guided to fit on the lower fire cover 200, which is convenient for production and assembly, and is also more convenient for users to put it in place when using it. In other embodiments, the inclined guide surface can also be set only on the top surface of the lower fire cover 200 or the bottom surface of the upper fire cover 300, which can also play a guiding assembly effect.
[0068] In this embodiment, the first inclined guide surface 220 and the second inclined guide surface 320 are both inclined upward from the radial inner side of the inner ring fire cover 100 to the radial outer side of the inner ring fire cover 100, so as to facilitate the upper fire cover 300 to cover the lower fire cover 200 downward. The first inclined guide surface 220 and the second inclined guide surface 320 are both extended in the covering direction close to the radial inner side of the inner ring fire cover 100, which can more effectively guide the user to put it in place, facilitate production and assembly, and also make it easier for the user to put it in place when using it. In other embodiments, the first inclined guide surface 220 and the second inclined guide surface 320 can also be inclined downward from the radial inner side of the inner ring fire cover 100 to the radial outer side of the inner ring fire cover 100.
[0069] In the present embodiment, the first radial limiting surface 210 extends upward in the vertical direction from the outer side of the first inclined guide surface 220, and the second radial limiting surface 310 extends downward in the vertical direction from the outer side of the second inclined guide surface 320. In the present embodiment, the first radial limiting surface 210 and the second radial limiting surface 310 both extend in the vertical direction, so that the force bearing area in the radial direction is larger, and radial limiting can be performed more effectively to avoid leakage or flame separation caused by radial displacement of the upper fire cover 300 and the lower fire cover 200. In other embodiments, the first radial limiting surface 210 and the second radial limiting surface 310 may also extend obliquely, or may extend along a curve, or other extension directions of the first radial limiting surface 210 and the second radial limiting surface 310 that are deemed appropriate by other persons skilled in the art may be selected.
[0070] Part of the first radial limiting surface 210 or the second radial limiting surface 310 is located inside the slot fire hole 400. Figure 2 and Figure 3 As shown, in this embodiment, part of the first radial limiting surface 210 is located inside the slotted fire hole 400, so that the gas flowing through the slotted fire hole 400 can be slowed down and the speed can be reduced, so that the flame stabilization effect of the inner ring fire cover 100 is better. In other embodiments, for example, when the slotted fire hole 400 is provided in the lower fire cover 200, part of the first radial limiting surface 210 can also be located inside the slotted fire hole 400.
[0071] like Figure 4-Figure 7 As shown, the top surface of the lower fire cover 200 also has a first plane 230, and the bottom surface of the upper fire cover 300 also has a second plane 330. The first plane 230 and the second plane 330 fit together, so that the upper fire cover 300 and the lower fire cover 200 are assembled more tightly. The lower fire cover 200 can better support the upper fire cover 300, improve the stability of the inner ring fire cover 100, and also change the flow direction of the gas, which can slow down the flow and reduce the speed of the gas.
[0072] like Figure 1-Figure 3 As shown, the slot fire hole 400 is sequentially provided with a first hole section 410 and a second hole section 420 along the radial inner side of the inner ring fire cover 100 to the radial outer side of the inner ring fire cover 100, and the first hole section 410 and the second hole section 420 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 410 is arranged obliquely upward along the radial inner side of the inner ring fire cover 100 to the radial outer side of the inner ring fire cover 100, which is conducive to introducing the gas entering the central cavity 600 from the bottom into the first hole section 410. The second hole section 420 is arranged horizontally, so that the gas flows out of the outlet of the second hole section 420 horizontally, reducing the flow rate of the gas flowing out of the second hole section 420, and improving the flame stabilization performance of the inner ring fire cover 100.
[0073] In this embodiment, the cross-sectional heights of the first hole segment 410 and the second hole segment 420 of the first slotted fire hole 430 are both B1, and the cross-sectional heights of the first hole segment 410 and the second hole segment 420 of the second slotted fire hole 440 are both B2, thereby increasing the flow path length and changing the gas outlet direction without changing the cross-sectional area of the slotted fire hole 400, thus playing a role in slowing down the flow. In other embodiments, other configurations of the cross-sectional area of the slotted fire hole 400 that are considered appropriate by those skilled in the art may also be selected.
[0074] In this embodiment, the length of the first hole segment 410 is L2, the length of the second hole segment 420 is L1, and L1 / L2=1 / 3. In other embodiments, other length ratios of the first hole segment 410 and the second hole segment that are considered appropriate by those skilled in the art may also be selected.
[0075] In this embodiment, the inclination angles of the second hole segments 420 of the first slotted fire hole 430 and the second slotted fire hole 440 are both θ. In other embodiments, the inclination angles of the second hole segments 420 of the first slotted fire hole 430 and the second slotted fire hole 440 may also be different.
[0076] like Figure 1As shown, the upper fire cover 300 is provided with a plurality of flame stabilizing holes 350 at intervals along the circumference of the upper fire cover 300. The flame stabilizing holes 350 are provided above the slot fire holes 400, and the flame stabilizing holes 350 communicate with the central cavity 600 and the outside. By providing the flame stabilizing holes 350 above the slot fire holes 400, the flow rate of the gas flowing through the slot fire holes 400 can be slowed down, thereby further playing a flame stabilizing role.
[0077] In this embodiment, flame stabilizing holes 350 are provided above both the first slotted fire hole 430 and the second slotted fire hole 440. In other embodiments, flame stabilizing holes 350 may be provided only above the first slotted fire hole 430 or the second slotted fire hole 440, or other arrangements of flame stabilizing holes 350 deemed appropriate by those skilled in the art may be selected.
[0078] In this embodiment, the flame stabilizing holes 350 above the first slotted fire hole 430 and the second slotted fire hole 440 are at the same height, so that when the flame stabilizing holes 350 are produced and processed, only one clamping and positioning is required, which improves the efficiency of production and saves energy and is environmentally friendly. In other embodiments, the flame stabilizing holes 350 above the first slotted fire hole 430 and the second slotted fire hole 440 can be set at different heights.
[0079] like Figure 3 As shown, in this embodiment, the diameter of the flame stabilizing hole 350 is d, the width of the first slotted flame hole 430 is b1, and the width of the second slotted flame hole 440 is b2, d = b1 = b2. In other embodiments, other diameters of the flame stabilizing hole 350 that are considered appropriate by those skilled in the art may also be selected.
[0080] The height of the axis of the flame stabilizing hole 350 from the upper edge of the slotted flame hole 400 is h0. In this embodiment, d1≤h0≤L2 / 2. In other embodiments, other positions of the flame stabilizing hole 350 considered appropriate by those skilled in the art may also be selected.
[0081] like Figure 1 As shown, an upper flame stabilizing annular slit 340 is provided on the outer peripheral side of the upper fire cover 300, and the upper flame stabilizing annular slit 340 is partially connected to the slot fire hole 400, and the upper top surface of the upper flame stabilizing annular slit 340 is at least partially flush with the upper top surface of the slot fire hole 400, so that the flame at the root of the slot fire hole 400 can be pulled, and the flame stabilizing effect is improved, and it is also convenient for the gas to flow between the slot fire holes 400 through the upper flame stabilizing annular slit 340, so that the combustion is more uniform and the flame stabilizing effect is better. In this embodiment, the height of the upper flame stabilizing annular slit 340 is h2, and those skilled in the art can determine the size of h2 according to actual needs.
[0082] The upper fire cover 300 also includes an ignition hole 500, and the upper flame-stabilizing ring seam 340 is partially connected to the ignition hole 500, so that after the ignition hole 500 is ignited, the flame can ignite the slot fire holes 400 on the left and right sides more quickly through the upper flame-stabilizing ring seam 340, making the circumferential fire transfer speed of the inner ring fire cover 100 faster.
[0083] Ignition grooves 510 connected to the groove fire holes 400 are provided on both sides of the ignition hole 500 in the vertical direction, so that the gas of the groove fire holes 400 on both sides can be diverted toward the ignition hole 500, so that the gas concentration near the ignition hole 500 is increased, and the ignition effect of the inner ring fire cover 100 is improved.
[0084] like Figure 1 As shown, in this embodiment, the lower fire cover 200 is provided with a plurality of lower flame stabilizing grooves 240 at intervals along the circumference of the lower fire cover 200. The lower flame stabilizing grooves 240 are provided below the slot fire hole 400 and communicate with the slot fire hole 400. The width of the lower flame stabilizing grooves 240 is greater than the width of the slot fire hole 400. Since the width of the lower flame stabilizing grooves 240 is greater than the width of the slot fire hole 400, the gas passing through the slot fire hole 400 will be diverted to the lower flame stabilizing grooves 240 with a smaller cross-sectional area. The gas flow rate in the lower flame stabilizing grooves 240 is small, and the flame is small, so that the flame at the root of the slot fire hole 400 can be pulled, and the flame stabilizing performance of the inner ring fire cover 100 can be further improved. The lower flame stabilizing grooves 240 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, thereby improving the service life of the inner ring fire cover 100. The lower flame stabilizing groove 240 is arranged on the lower fire cover 200 instead of the upper fire cover 300, which is also convenient for cleaning the lower flame stabilizing groove 240 after disassembly.
[0085] In this embodiment, the lower flame stabilizing groove 240 is only set below the second groove fire hole 440. In other embodiments, the lower flame stabilizing groove 240 can be set below both the first groove fire hole 430 and the second groove fire hole 440. Other settings of the lower flame stabilizing groove 240 that are deemed appropriate by those skilled in the art can also be selected.
[0086] like Figure 3 As shown, in this embodiment, the height of the lower flame stabilizing groove 240 is h1, where h1=b1 / 3. In other embodiments, other heights of the lower flame stabilizing groove 240 that are considered appropriate by those skilled in the art may also be selected.
[0087] like Figure 7As shown, in this embodiment, the width of the lower flame stabilizing groove 240 is b4, 1.5*b1≤b4≤2*b1, and in other embodiments, other widths of the lower flame stabilizing groove 240 that are considered appropriate by those skilled in the art may also be selected. In this embodiment, the lower flame stabilizing grooves 240 are arranged at intervals along the circumference of the lower fire cover 200, and the interval between the lower flame stabilizing grooves 240 is b3. Those skilled in the art may determine the size of b3 according to actual needs.
[0088] The top of the upper fire cover 300 extends horizontally outward along the circumference of the upper fire cover 300 to form a flange 360, and the flame stabilizing hole 350 is arranged below the flange 360. In this embodiment, the flange 360 arranged above the flame stabilizing hole 350 can block the overflow, prevent the overflow from entering the flame stabilizing hole 350 and the slot fire hole 400, avoid the flame stabilizing hole 350 and the slot fire hole 400 from being contaminated, and is more conducive to keeping the inner ring fire cover 100 clean. The flange 360 can press the flame of the flame stabilizing hole 350 downward, further playing a flame stabilizing role.
[0089] 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.
[0090] 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, wherein the upper fire cover is detachably covered on the lower fire cover to form a central cavity and a plurality of slot fire holes, wherein the slot fire holes communicate with the central cavity and the outside; The top surface of the lower fire cover has a first radial limiting surface, the bottom surface of the upper fire cover has a second radial limiting surface, the top surface of the lower fire cover and / or the bottom surface of the upper fire cover also have an inclined guide surface, and the first radial limiting surface and / or the second radial limiting surface surround the outer side of the inclined guide surface; The upper fire cover is guided by the inclined guide surface to cover the lower fire cover so that the vertical center line of the upper fire cover and the vertical center line of the lower fire cover are located on the same straight line, and the first radial limiting surface and the second radial limiting surface are fitted and abutted against each other to limit the radial displacement between the upper fire cover and the lower fire cover.
2. The inner ring fire cover according to claim 1, characterized in that: The top surface of the lower fire cover and the bottom surface of the upper fire cover both have the inclined guide surface, and the inclined guide surface includes a first inclined guide surface and a second inclined guide surface; The top surface of the lower fire cover has a first inclined guide surface, and the bottom surface of the upper fire cover has a second inclined guide surface, and the first inclined guide surface and the second inclined guide surface are in contact with each other.
3. The inner ring fire cover according to claim 2, characterized in that: The first inclined guide surface and the second inclined guide surface are both inclined upwardly and obliquely from the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover.
4. The inner ring fire cover according to claim 2, characterized in that: The first radial limiting surface extends upward along the vertical direction from the outer side of the first inclined guide surface, and the second radial limiting surface extends downward along the vertical direction from the outer side of the second inclined guide surface.
5. The inner ring fire cover according to claim 4, characterized in that: Part of the first radial limiting surface or the second radial limiting surface is located inside the slot fire hole.
6. The inner ring fire cover according to claim 1, characterized in that: The top surface of the lower fire cover also has a first plane, and the bottom surface of the upper fire cover also has a second plane, and the first plane and the second plane are in contact with each other.
7. The inner ring fire cover according to claim 1, characterized in that: The slot fire hole is provided with a first hole segment and a second hole segment in sequence from the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover, the first hole segment and the second hole segment form a bend, the first hole segment is provided obliquely upward from the radial inner side of the inner ring fire cover to the radial outer side of the inner ring fire cover, and the second hole segment is provided horizontally.
8. The inner ring fire cover according to claim 1, characterized in that: An upper flame stabilizing annular seam is provided on the outer peripheral side of the upper fire cover, and the upper flame stabilizing annular seam is partially connected with the slot fire hole, and the upper top surface of the upper flame stabilizing annular seam is at least partially flush with the upper top surface of the slot fire hole.
9. The inner ring fire cover according to claim 8, characterized in that: The upper ignition cover also includes an ignition hole, and the upper flame stabilizing ring seam is partially connected to the ignition hole.
10. A burner, characterized in that: It comprises an inner ring fire cover as described in any one of claims 1-9.