burner

Abstract

The present invention discloses a burner, which includes an inner ring fire cover, which includes an inner cylinder and an outer cylinder. The inner cylinder is arranged inside the outer cylinder, and the bottom of the outer cylinder is sealed to the outer wall of the inner cylinder; the inner cylinder includes a chamber opening downward, and a through hole is provided on the side wall of the inner cylinder; a plurality of main fire holes are provided on the side wall of the outer cylinder, and a first top cover is provided on the top of the outer cylinder. When the burner of the present invention is working, the gas introduced into the inner cylinder flows upward, passes through the through hole and flows out of the inner cylinder, and the gas flow direction can be changed from vertical to horizontal, and the gas flow flowing out of the inner cylinder flows out through the main fire hole on the outer cylinder for combustion. By providing a double-layer cylinder to change the flow direction of the gas, the flow resistance of the gas flow can be greatly increased and the gas speed can be reduced, thereby solving the problem of gas flame separation of the burner due to excessive gas flow rate.

Description

Technical Field

[0001] The present invention relates to the field of burner equipment, in particular to a burner. Background Art

[0002] In the prior art, gas enters the inner ring fire cover from the bottom. Once inside, the gas flows directly out of the fire holes for combustion. However, an overly large opening in the gas valve can cause the gas flow rate into the inner ring fire cover to be too high. Furthermore, the gas entering the inner ring fire cover flows directly out of the main fire holes along a vertical upward path, resulting in excessively high gas velocity. This inadequate preheating of the gas can reduce the stove's flame stability and thermal efficiency, and can also lead to flame lift issues. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a burner to overcome the defects in the prior art where the gas flowing out of the inner ring fire cover is too fast, the gas cannot be fully preheated, which easily reduces the flame stabilization effect and thermal efficiency of the stove and easily causes the gas flame to separate.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a burner, which includes an inner ring fire cover, the inner ring fire cover including an inner cylinder and an outer cylinder, the inner cylinder is arranged inside the outer cylinder, and the bottom of the outer cylinder is sealed with the outer wall surface of the inner cylinder; the inner cylinder includes a chamber opening downward, and a through hole is provided on the side wall of the inner cylinder; a plurality of main fire holes are provided on the side wall of the outer cylinder, and a first top cover is provided on the top of the outer cylinder.

[0006] In this solution, the inner ring fire cover includes two chambers formed by an inner cylinder and an outer cylinder, and the chamber of the inner cylinder and the chamber of the outer cylinder are connected through a through hole. When the burner of the present invention is working, the gas introduced into the inner cylinder flows upward, passes through the through hole and flows out of the inner cylinder. The gas flow direction can be changed from vertical to horizontal, and the gas flow flowing out of the inner cylinder flows out through the main fire hole on the outer cylinder for combustion. By setting a double-layer cylinder to change the direction of gas flow, the flow resistance of the gas flow can be greatly increased, the gas speed can be reduced, and the problem of gas flame separation of the burner due to excessive gas flow rate can be solved. The gas can be fully preheated in the process of flowing from the inner cylinder to the outer cylinder, thereby improving the thermal efficiency of the gas.

[0007] Preferably, a second top cover is provided on the top of the inner cylinder, and the main fire hole is located above the second top cover.

[0008] In this solution, the second top cover on the inner cylinder can seal the top of the inner cylinder, preventing the gas flow from flowing out from the top of the inner cylinder, causing the gas flow to flow out from the through-holes on the inner cylinder, thereby changing the flow direction of the gas flow and increasing the flow resistance of the gas flow. The main fire hole is arranged above the second top cover, which can cause the gas flow flowing out of the inner cylinder to hit the inner wall of the outer cylinder and then flow upward, then flow out from the main fire hole above, further changing the flow direction of the gas flow, increasing the flow resistance of the gas flow, reducing the speed of the gas flowing out of the inner ring fire cover, and ensuring that the burner will not experience flame separation.

[0009] Preferably, the edge of the second top cover exceeds the outer wall surface of the inner cylinder and extends toward the inner wall surface of the outer cylinder, and there is a gap between the outer peripheral surface of the second top cover and the inner wall surface of the outer cylinder;

[0010] And / or, the second top cover is detachably mounted on the top of the inner cylinder.

[0011] In this solution, the gas flow out of the inner cylinder hits the inner wall of the outer cylinder and flows upward. The edge of the second top cover can block part of the gas between the outer cylinder and the inner cylinder, so that the gas flow passes through the gap between the outer peripheral surface of the second top cover and the inner wall of the outer cylinder and flows toward the main fire hole above. This can further reduce the flow speed of the gas and prevent the user from opening the gas valve too wide, causing the stove to have excessive fire power and easily cause dangerous conditions.

[0012] Preferably, the main fire hole and the through hole are staggered along the circumference of the inner ring fire cover.

[0013] In this solution, by staggering the main fire hole and the through hole, the distance from the gas flow in the through hole to the main fire hole can be increased, the resistance to gas flow can be increased, and the unimpeded outflow of gas can be avoided.

[0014] Preferably, the inner cylinder and the outer cylinder are coaxially arranged;

[0015] And / or, there are multiple through holes.

[0016] In this solution, the inner cylinder and the outer cylinder are coaxially arranged, which can make the flow of gas flow more uniform and improve the guiding effect of the inner ring fire cover. By providing multiple through holes, the flow of gas flow can also be made more uniform and improve the guiding effect of the inner ring fire cover.

[0017] Preferably, a flame stabilizing hole is further provided on the side wall of the outer cylinder, and the flame stabilizing hole is provided between two adjacent main fire holes.

[0018] Preferably, the first top cover is detachably mounted on the top of the outer cylinder.

[0019] Preferably, a first brim and a second brim extend downward from the top wall of the first top cover, and the first brim and the second brim are arranged on the outer peripheral side of the outer cylinder.

[0020] In this solution, when the burner is operating, external overflow is likely to drip onto the first top cover. By providing a first brim and a second brim on the top cover of the first top cover, the main fire hole on the outer cylinder can be covered and protected. The overflow can drip directly from the bottom of the first brim and the second brim, preventing the overflow from blocking the main fire hole and thus reducing the combustion efficiency of the burner. The combination of the first brim and the second brim can act as a double-layer overflow diversion device, allowing the top overflow to flow along the bottom of the first brim and the second brim without flowing into the main fire hole or into the outer cylinder, thereby avoiding reducing the heating efficiency of the burner.

[0021] Preferably, the first brim is arranged on the outside of the second brim, and the lower end of the second brim is located above the lower end of the first brim.

[0022] And / or, the bottom surface of the first top cover has an inclined surface located between the inner wall surface of the second brim and the outer wall surface of the outer cylinder, and the inclined surface is inclined upward from the outer cylinder toward the second brim.

[0023] In this solution, the lower end of the outer first brim is lower than the lower end of the inner second brim. This not only effectively intercepts gas flowing to the bottom surface of the first top cover, accumulating gas and enhancing flame stabilization, but also forms an annular gas mixing chamber between the first and second brims, allowing air and gas to mix within the annular gas mixing chamber, resulting in more complete combustion and higher combustion efficiency. The first top cover is located on the top surface of the outer cylinder. After the gas in the outer cylinder flows out, it flows along the inclined surface toward the inner wall of the second brim, thereby converging and guiding the gas.

[0024] Preferably, the cross-section of the first brim and / or the second brim is an inverted trapezoid that is wider at the top and narrower at the bottom.

[0025] In this solution, by setting the first brim and / or the second brim to be an inverted trapezoid that is wider at the top and narrower at the bottom, a better diversion effect can be achieved for overflowing liquid.

[0026] Preferably, the angle between the outer wall surface of the first brim and the vertical direction is α, and the angle between the inner wall surface of the first brim and the vertical direction is β, wherein α<β;

[0027] And / or, the angle between the inner wall surface of the second brim and the vertical direction is γ, and the angle between the inner wall surface of the second brim and the vertical direction is δ, wherein γ<δ.

[0028] In this solution, by limiting the angle between the outer wall surface of the first brim and the vertical direction to be smaller than the angle between the inner wall surfaces of the first brim, the overflow can be caused to drip under the diversion action of the first brim; similarly, by limiting the angle between the outer wall surface of the second brim and the vertical direction to be smaller than the angle between the inner wall surfaces of the second brim, the overflow can be caused to drip under the diversion action of the second brim.

[0029] Preferably, an annular limiting portion is further extended downward from the top wall of the first top cover, and the inner side wall of the outer cylinder is in contact with the outer side wall of the annular limiting portion.

[0030] In this solution, the annular limiting portion on the first top cover is clamped in the outer cylinder, so that the positioning between the first top cover and the outer cylinder can be achieved.

[0031] The positive and progressive effect of the present invention lies in that when the burner is in operation, the gas entering the inner cylinder flows upward, passes through the through-hole, and then flows out of the inner cylinder. The gas flow is changed from a vertical flow to a horizontal flow. The gas flow exiting the inner cylinder then flows out through the main flame hole in the outer cylinder for combustion. By providing a double-layer cylinder to change the direction of the gas flow, the flow resistance of the gas flow is greatly increased and the gas velocity is reduced, thereby solving the problem of gas flame separation in the inner ring fire cover caused by excessive gas flow velocity. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the burner of the present invention.

[0033] Figure 2 The structure of the inner ring fire cover of the present invention is shown as follows Figure 1 .

[0034] Figure 3 The structure of the inner ring fire cover of the present invention is shown as follows Figure 2

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the inner ring fire cover of the present invention.

[0036] Figure 5 It is a structural schematic diagram of the outer cylinder of the present invention.

[0037] Figure 6 It is a structural schematic diagram of the first cap of the present invention.

[0038] Description of reference numerals:

[0039] Inner cylinder 100

[0040] Through hole 110

[0041] Second top cover 200

[0042] Outer cylinder 300

[0043] Main fire hole 310

[0044] Flame stabilizing hole 320

[0045] Top surface 330

[0046] First cover 400

[0047] First brim 410

[0048] Second brim 420

[0049] Bevel 430

[0050] Annular limiting portion 440 DETAILED DESCRIPTION

[0051] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0052] like Figure 1-6 As shown, this embodiment provides a burner comprising an inner ring fire cover, which comprises an inner cylinder 100 and an outer cylinder 300. The inner cylinder 100 is disposed within the outer cylinder 300, and the bottom of the outer cylinder 300 is sealed to the outer wall of the inner cylinder 100. The inner cylinder 100 includes a chamber opening downward, and a through hole 110 is formed on the side wall of the inner cylinder 100. A plurality of main fire holes 310 are formed on the side wall of the outer cylinder 300, and a first top cover 400 is provided on the top of the outer cylinder 300.

[0053] The inner ring fire cover includes two chambers formed by the inner cylinder 100 and the outer cylinder 300. The chambers of the inner cylinder 100 and the outer cylinder 300 are connected through the through hole 110, so that the gas enters the inner cavity of the inner cylinder 100 into the inner cavity of the outer cylinder 300, and then flows out from the main fire hole 310 for combustion. When the burner is working, the gas entering the inner cylinder 100 flows upward, passes through the through hole 110, and then flows out of the inner cylinder 100. The gas flow direction can be changed from vertical to horizontal. The gas flow flowing out of the inner cylinder 100 then flows out through the main fire hole 310 on the outer cylinder 300 for combustion. By setting a double-layer cylinder to change the direction of gas flow, the flow resistance of the gas flow can be greatly increased and the gas velocity can be reduced, thereby solving the problem of gas flame separation of the inner ring fire cover caused by excessive gas flow velocity.

[0054] In this embodiment, a second top cover 200 is provided on the top of the inner cylinder 100, and the main flame hole 310 is located above the second top cover 200. The second top cover 200 on the inner cylinder 100 can seal the top of the inner cylinder 100, preventing the gas flow from flowing directly out of the top of the inner cylinder 100, and causing the gas flow to flow out from the through hole 110 on the inner cylinder 100, thereby changing the flow direction of the gas flow and increasing the flow resistance of the gas flow. The main flame hole 310 is arranged above the second top cover 200, so that the gas flow flowing out of the inner cylinder 100 hits the inner wall surface of the outer cylinder 300 and then flows upward, and then flows out from the main flame hole 310 above, further changing the flow direction of the gas flow, increasing the flow resistance of the gas flow, reducing the speed of the gas flowing out of the inner ring fire cover, and ensuring that the burner does not experience flame separation. The gas can be fully preheated in the process of flowing from the inner cylinder 100 to the outer cylinder 300, thereby improving the thermal efficiency of the gas.

[0055] The edge of the second top cover 200 extends beyond the outer wall of the inner cylinder 100 and toward the inner wall of the outer cylinder 300, leaving a gap between the outer circumference of the second top cover 200 and the inner wall of the outer cylinder 300. When the gas flow exiting the inner cylinder 100 hits the inner wall of the outer cylinder 300 and flows upward, the edge of the second top cover 200 blocks some of the gas between the outer cylinder 300 and the inner cylinder 100, allowing the gas flow to flow upward toward the main flame hole 310 through the gap between the outer circumference of the second top cover 200 and the inner wall of the outer cylinder 300. This further reduces the gas flow rate and prevents the stove from becoming overheated and potentially dangerous when the user opens the gas valve too wide.

[0056] In some embodiments, the second top cover 200 is detachably mounted on the top of the inner cylinder 100 , which facilitates the disassembly and assembly of the second top cover 200 and also facilitates cleaning the interior of the inner cylinder 100 .

[0057] In this embodiment, the main flame hole 310 is staggered with the through hole 110 along the circumference of the inner ring flame cover. By staggering the main flame hole 310 and the through hole 110, the distance from the gas flow in the through hole 110 to the main flame hole 310 can be increased, increasing the resistance to gas flow and preventing the gas flow from flowing out unimpeded.

[0058] The inner cylinder 100 and the outer cylinder 300 are coaxially arranged, which can make the flow of the gas flow more uniform and improve the guiding effect of the inner ring fire cover.

[0059] Multiple through holes 110 are provided and evenly distributed along the side wall of the inner cylinder 100, which can make the flow of gas more uniform and improve the guiding effect of the inner ring fire cover. The through holes 110 can also be set as multiple rows of small holes to make the gas flow more uniform without reducing the gas flow speed too much.

[0060] The side wall of the outer cylinder 300 is further provided with a flame stabilizing hole 320, which is provided between two adjacent main flame holes 310. The flame stabilizing hole 320 can improve the stability of the gas flowing out of the burner, so that the burner has better flame stability.

[0061] The first top cover 400 is removably mounted on top of the outer cylinder 300, facilitating its removal and installation, as well as cleaning the interior of the inner ring fire cover. Specifically, a dirt collection area is formed between the bottom of the outer cylinder 300 and the outer wall of the inner cylinder 100. Any spillage that enters the outer cylinder 300 is collected in the dirt collection area, preventing it from entering the interior of the inner cylinder 100. When cleaning the cooktop, removing the first top cover 400 exposes the interior of the outer cylinder 300, making it easier to clean the main fire hole 310, flame stabilization hole 320, and dirt collection area.

[0062] The top wall of the first top cover 400 extends downwardly with a first brim 410 and a second brim 420, which are arranged around the outer circumference of the outer cylinder 300. When the burner is working, external overflow is likely to drip onto the first top cover 400. By providing the first brim 410 and the second brim 420 on the top cover of the first top cover 400, the main fire hole 310 on the outer cylinder 300 can be covered and protected. The overflow can drip directly from the bottom of the first brim 410 and the second brim 420, preventing the overflow from blocking the main fire hole 310, thereby preventing the combustion efficiency of the burner from being reduced. The combination of the first brim 410 and the second brim 420 can play a double-layer overflow diversion role, allowing the top overflow to flow along the bottom of the first brim 410 and the second brim 420 without flowing into the main fire hole 310 or the outer cylinder 300, thereby avoiding reducing the heating efficiency of the burner.

[0063] The inner cylinder 100 and the outer cylinder 300 of the present invention can form a double-layer chamber. In the process of the gas flowing from the inner cylinder 100 to the main fire hole 310 on the outer cylinder 300, the speed of the gas flow will gradually decrease to avoid the flame separation of the inner ring fire cover, thereby improving the stability of the flame and making the inner ring fire cover have a better flame effect; at the same time, the first brim 410 and the second brim 420 are arranged on the first top cover 400, which can improve the mixing effect of the gas and the air at the first top cover 400, further improve the stability of the flame, and enhance the flame at the inner ring fire cover.

[0064] The first brim 410 is disposed outside the second brim 420, with the lower end of the second brim 420 positioned above the lower end of the first brim 410. The lower end of the outer first brim 410 is lower than the lower end of the inner second brim 420. This not only effectively intercepts the gas flowing to the bottom surface of the first top cover 400, accumulating the gas and enhancing flame stabilization, but also forms an annular gas mixing chamber between the first brim 410 and the second brim 420, allowing air and gas to mix in the annular gas mixing chamber, resulting in more complete combustion and higher combustion efficiency.

[0065] In this embodiment, the top surface 330 of the outer cylinder 300 has a plurality of grooves spaced apart along the circumference of the outer cylinder 300. The grooves extend through the sidewalls of the outer cylinder 300 and form primary flame holes 310. The primary flame holes 310 are evenly distributed along the circumference of the outer cylinder 300, ensuring uniform gas flow through the inner ring flame cover, enabling the burner to produce a stable and uniform flame.

[0066] The top surface 330 of the outer cylinder 300 is inclined upward from the inner wall surface of the outer cylinder 300 toward the outer wall surface of the outer cylinder 300, and then fits into the inclined surface 430 on the first top cover 400 to form an upwardly inclined gas outlet, which is convenient for guiding the gas to between the first brim 410 and the second brim 420. The air and gas can produce a secondary mixing between the first brim 410 and the second brim 420, making the gas burn more completely.

[0067] The bottom surface of the first top cover 400 is located between the inner wall of the second brim 420 and the outer wall of the outer cylinder 300 and has a sloped surface 430. The sloped surface 430 slopes upward from the outer cylinder 300 toward the second brim 420. The first top cover 400 is mounted on the top surface 330 of the outer cylinder 300. After the gas in the outer cylinder 300 flows out, it follows the direction of the sloped surface 430 toward the inner wall of the second brim 420, thereby converging and guiding the gas.

[0068] The cross-section of the first brim 410 and the second brim 420 is in the shape of an inverted trapezoid with a wide top and a narrow bottom. By setting the first brim 410 and the second brim 420 in the shape of an inverted trapezoid with a wide top and a narrow bottom, a better diversion effect can be achieved for overflowing liquid.

[0069] The angle between the outer wall of the first brim 410 and the vertical direction is α, and the angle between the inner wall of the first brim 410 and the vertical direction is β, where α<β. By limiting the angle between the outer wall of the first brim 410 and the vertical direction to be smaller than the angle between the inner walls of the first brim 410, overflowing liquid can be guided to drip away by the first brim 410.

[0070] The angle between the inner wall of the second brim 420 and the vertical direction is γ, and the angle between the inner wall of the second brim 420 and the vertical direction is δ, where γ<δ. By limiting the angle between the outer wall of the second brim 420 and the vertical direction to be smaller than the angle between the inner walls of the second brim 420, overflowing liquid can be caused to drip under the guidance of the second brim 420.

[0071] The top wall of the first top cover 400 further extends downwardly to form an annular stopper 440, and the inner sidewall of the outer cylinder 300 is in contact with the outer sidewall of the annular stopper 440. By snapping the annular stopper 440 on the first top cover 400 into the outer cylinder 300, the first top cover 400 and the outer cylinder 300 can be positioned.

[0072] In this embodiment, a mounting portion is provided on the outer wall surface of the outer cylinder 300, and two mounting holes are provided on the mounting portion. By setting bolts through the mounting holes, the inner ring fire cover can be installed on the burner.

[0073] In other embodiments, the inner ring fire cover can be snapped directly onto the burner.

[0074] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A burner comprising an inner ring fire cover, characterized in that: The inner ring fire cover includes an inner cylinder and an outer cylinder, wherein the inner cylinder is arranged inside the outer cylinder, and the bottom of the outer cylinder is sealed with the outer wall of the inner cylinder; the inner cylinder includes a chamber opening downward, and a through hole is opened on the side wall of the inner cylinder; a plurality of main fire holes are opened on the side wall of the outer cylinder, and a first top cover is provided on the top of the outer cylinder; A first brim and a second brim are downwardly extended from the top wall of the first top cover, and the first brim and the second brim are ring-arranged on the outer circumference of the outer cylinder; The first brim is arranged on the outside of the second brim, and the lower end of the second brim is located above the lower end of the first brim; The bottom surface of the first top cover is located between the inner wall surface of the second brim and the outer wall surface of the outer cylinder and has an inclined surface, and the inclined surface is inclined upward from the outer cylinder toward the second brim; The included angle between the outer wall surface of the first brim and the vertical direction is α, and the included angle between the inner wall surface of the first brim and the vertical direction is β, wherein α<β.

2. The burner according to claim 1, wherein A second top cover is provided on the top of the inner cylinder, and the main fire hole is located above the second top cover.

3. The burner according to claim 2, characterized in that The edge of the second top cover exceeds the outer wall surface of the inner cylinder and extends to the inner wall surface of the outer cylinder, and there is a gap between the outer peripheral surface of the second top cover and the inner wall surface of the outer cylinder; And / or, the second top cover is detachably mounted on the top of the inner cylinder.

4. The burner according to claim 1, wherein The main fire hole and the through hole are staggered along the circumference of the inner ring fire cover.

5. The burner according to claim 1, wherein The inner cylinder and the outer cylinder are coaxially arranged; And / or, there are multiple through holes.

6. The burner according to claim 1, wherein A flame stabilizing hole is further provided on the side wall of the outer cylinder, and the flame stabilizing hole is arranged between two adjacent main fire holes.

7. The burner according to claim 1, wherein The first top cover is detachably mounted on the top of the outer cylinder.

8. The burner according to claim 1, wherein The cross-section of the first hat brim and / or the second hat brim is an inverted trapezoid that is wider at the top and narrower at the bottom.

9. The burner according to claim 8, characterized in that The included angle between the inner wall surface of the second brim and the vertical direction is γ, and the included angle between the inner wall surface of the second brim and the vertical direction is δ, wherein γ<δ.

10. The burner according to claim 7, wherein The top wall of the first top cover further extends downwardly to form an annular limiting portion, and the inner side wall of the outer cylinder is in contact with the outer side wall of the annular limiting portion.

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