An updraft ring fire burner

Abstract

This invention discloses a top-intake annular flame burner, belonging to the technical field of gas stoves. It includes a top-intake ejector, a top cover, a base, and an annular flame cap. An air inlet pipe is provided on the lower side of the base, communicating with the top-intake ejector. The top cover is positioned on the upper side of the base to form a premixing chamber, and an air inlet gap is formed between the inner side of the top cover and the base. The lower side of the annular flame cap is connected to the base, and an annular flame channel is formed between the annular flame cap and the top cover, communicating with the air inlet gap. An annular flame hole is provided at the end of the annular flame channel furthest from the air inlet gap. The top cover has rotationally symmetrical and evenly distributed air passages, and the premixing chamber communicates with the annular flame channel through these air passages. This top-intake annular flame burner solves the problem of incomplete combustion in existing burners.

Description

Technical Field

[0001] This invention relates to the field of gas stove technology, and in particular to a top-intake annular burner. Background Technology

[0002] Existing burners use two combustion methods: direct flame and annular flame. Annular flame burns close to the bottom of the pot, creating a rotating flame surface. Annular flames have a large combustion area, resulting in relatively high thermal efficiency, rapid heating, and concentrated heat. However, annular flame burners generally suffer from the following problem: insufficient air entering the premixing chamber leads to inadequate premixing of the fuel gas, resulting in incomplete combustion. Summary of the Invention

[0003] In order to overcome the defects of the existing technology, the present invention provides an upward air intake annular fire burner to solve the above problems.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an upper air intake annular flame burner, including an upper air intake ejector, a top cover, a base and an annular flame cover; an air intake pipe is provided on the lower side of the base, and the air intake pipe is connected to the upper air intake ejector;

[0005] The top cover is disposed on the upper side of the base to form a premixing chamber, and an air intake gap is formed between the inner side of the top cover and the base.

[0006] The lower side of the annular flame cap is connected to the base, and an annular flame channel is formed between the annular flame cap and the top cover. The annular flame channel is connected to the air intake gap, and an annular flame hole is provided at the end of the annular flame channel away from the air intake gap.

[0007] The top cover has rotationally symmetrical and evenly distributed air passages, and the premixing chamber is connected to the annular fire channel through the air passages.

[0008] Preferably, the upper side of the base is provided with an annular circulation channel, and the base cooperates with the top cover through the annular circulation channel to form a premixing cavity with an annular structure.

[0009] Optionally, the upper side of the base is also provided with an air intake groove, which is recessed downward relative to the annular circulation channel. One end of the air intake groove is connected to the annular circulation channel, and the other end of the air intake groove is provided with an annular fire air intake hole, which is connected to the air intake pipe.

[0010] Specifically, the top cover has a downwardly extending shielding portion, and the air intake gap is formed between the shielding portion and the base.

[0011] It is worth noting that the walls of the annular fire cover forming the annular fire channel and the walls of the top cover are both inclined from bottom to top and from the inside to the outside, and the air passage is opened on the inclined wall of the top cover.

[0012] Specifically, the base has a center flame cap in the middle, and the inner cavity of the center flame cap is connected to the air intake pipe through the center flame air intake hole in the middle of the base.

[0013] Preferably, the central flame cap has an upper oblique hole and a lower oblique hole, wherein the upper oblique holes are evenly distributed on the circumferential wall surface of the central flame cap, the lower oblique holes are evenly distributed on the circumferential wall surface of the central flame cap, and the upper oblique holes are located above the lower oblique holes.

[0014] Specifically, the upward-sloping hole is an inclined structure that runs from bottom to top and from the inside out.

[0015] Optionally, the downward inclined hole includes a vertical channel and an inclined channel. One end of the vertical channel is connected to the inner cavity of the central flame cap, and the other end of the vertical channel is connected to one end of the inclined channel. The other end of the inclined channel extends inclinedly from bottom to top and from the inside to the outside. The outer circumferential wall of the central flame cap is provided with a shielding slope between the upward and downward inclined holes to shield the upper side of the inclined channel.

[0016] The beneficial effects of this invention are as follows: In the top-inlet annular burner, the fuel gas enters the premixing chamber through the top-inlet ejector and the intake pipe. After mixing with air, it is ignited after being output from the air passage. The air passage is a torn louver type, with gas entering from the bottom, passing through the air passage, and exiting from the top, thereby forming an annular flame within the annular flame channel, and then outputting from the annular flame hole. During this process, air from outside the burner can also sequentially enter the premixing chamber through the annular flame hole, the annular flame channel, and the intake gap, ensuring sufficient air in the premixing chamber, thereby ensuring sufficient premixing of fuel gas and air, and making combustion more complete. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an upper-inlet annular flame burner in one embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of an upper-inlet annular flame burner in one embodiment of the present invention;

[0019] Figure 3 for Figure 2 An enlarged schematic diagram of the dashed circle A;

[0020] Figure 4 This is a schematic diagram of the top cover structure in one embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the base structure in one embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the base structure in another embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the central flame cap in one embodiment of the present invention;

[0024] Figure 8 This is a cross-sectional view of the center flame cap in one embodiment of the present invention;

[0025] In the diagram: 1. Upper air inlet ejector; 2. Top cover; 21. Air vent; 22. Air inlet gap; 23. Shielding part; 3. Base; 31. Air inlet pipe; 32. Annular circulation channel; 33. Air inlet groove; 34. Annular flame air inlet; 35. Center flame air inlet; 4. Annular flame cap; 5. Center flame cap; 51. Upper inclined hole; 52. Lower inclined hole; 521. Vertical channel; 522. Inclined channel; 53. Shielding slope; 7. Annular flame channel; 8. Annular flame hole; 9. Premixing chamber. Detailed Implementation

[0026] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1-8 As shown, an upper air intake annular flame burner includes an upper air intake ejector 1, a top cover 2, a base 3, and an annular flame cover 4; an air intake pipe 31 is provided on the lower side of the base 3, and the air intake pipe 31 is connected to the upper air intake ejector 1.

[0028] like Figure 2 and 3 As shown, the top cover 2 is disposed on the upper side of the base 3 to form a premixing chamber 9, and an air intake gap 22 is formed between the inner side of the top cover 2 and the base 3;

[0029] The lower side of the annular flame cap 4 is connected to the base 3. An annular flame channel 7 is formed between the annular flame cap 4 and the top cover 2. The annular flame channel 7 is connected to the air intake gap 22. An annular flame hole 8 is provided at the end of the annular flame channel 7 away from the air intake gap 22.

[0030] The top cover 2 has rotationally symmetrical and evenly distributed air passages 21, and the premixing chamber 9 is connected to the annular fire channel 7 through the air passages 21.

[0031] In the top-inlet annular burner, the combustion gas enters the premixing chamber 9 through the top-inlet ejector 1 and the inlet pipe 31. After mixing with air, it is ignited after being output from the air outlet 21. Figure 4 As shown, the vent 21 is a torn louver type. Gas enters from the bottom, passes through the vent 21, and exits from the top, thus forming an annular flame within the annular flame channel 7, and then exits from the annular flame hole 8. During this process, air from outside the burner can also sequentially pass through the annular flame hole 8, the annular flame channel 7, and the air intake gap 22 into the premixing chamber 9, ensuring sufficient air in the premixing chamber 9, thereby ensuring sufficient premixing of fuel gas and air, and making combustion more complete.

[0032] Preferred, such as Figure 5 As shown, the upper side of the base 3 is provided with an annular circulation channel 32. The base 3 cooperates with the top cover 2 through the annular circulation channel 32 to form a premixed chamber 9 with an annular structure. After the gas enters the premixed chamber 9 from the inlet pipe 31, it will advance along the annular circulation channel 32 to form a circulation before passing through the air passage 21. The direction of gas advancement is as follows: Figure 5 The arrow in the image indicates the direction of rotation, which is more conducive to forming a ring-shaped fire.

[0033] Optional, such as Figure 5 and 6 As shown, the upper side of the base 3 is also provided with an air intake groove 33. The air intake groove 33 is recessed downward relative to the annular circulation channel 32. One end of the air intake groove 33 is connected to the annular circulation channel 32, and the other end of the air intake groove 33 is provided with an annular fire air intake hole 34. The annular fire air intake hole 34 is connected to the air intake pipe 31.

[0034] The air intake groove 33 extends along the length of the annular circulation channel 32. After the gas enters from the other end of the air intake groove 33, it slowly rises along the slope of the air intake groove 33 and finally enters the annular circulation channel 32, where it continues to flow along the length of the annular circulation channel 32. The air intake groove 33 acts as a guide, ensuring that the gas enters the annular circulation channel 32 in the designed extension direction, thus causing the gas flow to rotate. After the gas enters the annular circulation channel 32, since the air intake groove 33 is recessed downwards relative to the annular circulation channel 32, it does not affect the flow of the gas within the annular circulation channel 32. In this embodiment, the upper side of the base 3 is provided with two air intake grooves 33, both extending along the length of the annular circulation channel 32, thereby increasing the air intake volume.

[0035] Specifically, such as Figure 3As shown, the top cover 2 has a downwardly extending shielding portion 23, and the air intake gap 22 is formed between the shielding portion 23 and the base 3. After the shielding portion 23 is set, the flow of mixed gas from the air intake gap 22 into the annular fire channel 7 is restricted, thereby concentrating the mixed gas into the air passage 21 and flowing from the air passage 21 into the annular fire channel 7, thus ensuring that the air intake gap 22 is unobstructed.

[0036] It is worth noting that, such as Figure 2 and 3 As shown, the walls of the annular flame cap 4 forming the annular flame channel 7 and the top cover 2 are both inclined from bottom to top and from the inside to the outside. The vent 21 is opened on the inclined wall of the top cover 2. After the mixed gas passes through the vent 21, it will first collide with the wall of the top cover 2, thereby reducing the flow velocity of the mixed gas. After being ignited, it can prevent the flame from directly shooting out from the annular flame hole 8, making the flame more stable.

[0037] Specifically, such as Figure 2 As shown, a central flame cap 5 is provided in the middle of the base 3. The inner cavity of the central flame cap 5 is connected to the air intake pipe 31 through the central flame air intake hole 35 in the middle of the base 3. A gap is left between the central flame cap 5 and the annular flame cap 4 to facilitate the flow and replenishment of secondary air. Both flame caps can burn normally without affecting each other.

[0038] Optional, such as Figure 7 and 8 As shown, the central flame cap 5 has an upper oblique hole 51 and a lower oblique hole 52. The upper oblique holes 51 are evenly distributed on the circumferential wall surface of the central flame cap 5, and the lower oblique holes 52 are evenly distributed on the circumferential wall surface of the central flame cap 5. The upper oblique holes 51 are located above the lower oblique holes 52. After the fuel gas is introduced and mixed with air in the inner cavity of the central flame cap 5, the mixed gas can be output from the upper oblique holes 51 and the lower oblique holes 52 and ignited to form a dual flame.

[0039] Preferably, the upward-sloping hole 51 has an inclined structure from bottom to top and from the inside to the outside. This increases the flame coverage area, which is beneficial for heating.

[0040] It is worth noting that the downward inclined hole 52 includes a vertical channel 521 and an inclined channel 522. One end of the vertical channel 521 communicates with the inner cavity of the central flame cap 5, and the other end of the vertical channel 521 communicates with one end of the inclined channel 522. The other end of the inclined channel 522 extends inclinedly from bottom to top and from the inside to the outside. The outer circumference of the central flame cap 5 has a shielding slope 53 between the upper inclined hole 51 and the downward inclined hole 52 to shield the upper side of the inclined channel 522. The mixed gas first passes through the vertical channel 521, collides with the shielding slope 53, and then enters the inclined channel 522, thereby reducing the flow velocity of the mixed gas. After ignition, this prevents the flame from directly escaping from the opening of the downward inclined hole 52, making the flame more stable. By setting the shielding slope 53, the upper inclined hole 51 and the downward inclined hole 52 can be separated, preventing the flames from the upper inclined hole 51 and the downward inclined hole 52 from mixing together.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A top-inlet annular flame burner, characterized in that: It includes an upper air intake ejector, a top cover, a base, and an annular flame cap; the lower side of the base is provided with an air intake pipe, which is connected to the upper air intake ejector; The top cover is disposed on the upper side of the base to form a premixing chamber, and an air intake gap is formed between the inner side of the top cover and the base. The lower side of the annular flame cap is connected to the base, and an annular flame channel is formed between the annular flame cap and the top cover. The annular flame channel is connected to the air intake gap, and an annular flame hole is provided at the end of the annular flame channel away from the air intake gap. The top cover has rotationally symmetrical and evenly distributed air vents, and the premixing chamber is connected to the annular fire channel through the air vents; The upper side of the base is provided with an annular circulation channel, and the base cooperates with the top cover through the annular circulation channel to form a premixing cavity with an annular structure. The upper side of the base is also provided with an air intake groove, which is recessed downward relative to the annular circulation channel. One end of the air intake groove is connected to the annular circulation channel, and the other end of the air intake groove is provided with an annular fire air intake hole, which is connected to the air intake pipe. The top cover has a downwardly extending shielding portion, and the air intake gap is formed between the shielding portion and the base; The walls of the annular fire cover forming the annular fire channel and the walls of the top cover are both inclined from bottom to top and from the inside to the outside, and the air passage is opened on the inclined wall of the top cover. The base has a central flame cap in the middle, and the inner cavity of the central flame cap is connected to the air intake pipe through the central flame air intake hole in the middle of the base. The central flame cap has an upper oblique hole and a lower oblique hole, wherein the upper oblique holes are evenly distributed on the circumferential wall surface of the central flame cap, and the lower oblique holes are evenly distributed on the circumferential wall surface of the central flame cap, and the upper oblique holes are located above the lower oblique holes. The lower inclined hole includes a vertical channel and an inclined channel. One end of the vertical channel is connected to the inner cavity of the central flame cap, and the other end of the vertical channel is connected to one end of the inclined channel. The other end of the inclined channel extends from bottom to top and from the inside to the outside. The outer circumference of the central flame cap is provided with a shielding slope between the upper and lower inclined holes to shield the upper side of the inclined channel.

2. The top-inlet annular flame burner according to claim 1, characterized in that: The upward-sloping hole is an inclined structure that runs from bottom to top and from the inside out.

Images