A mixed burner

Abstract

The present invention relates to the technical field of gas equipment, and in particular to a mixing burner, comprising a stove base and a burner head, wherein the stove base is formed with a first premixing chamber, and further comprises a burner head flame divider core that is detachably mounted inside the burner head and used for gas combustion, and a guide disc that is fitted on the bottom of the burner head flame divider core and used to divert the direction of the premixed gas; the guide disc is provided with a guide hole, and the premixed gas flows into the guide hole after being diverted by the guide disc, and then flows from the guide hole to the burner head flame divider core; the burner head comprises a funnel portion and a combustion portion, the bottom of the funnel portion is connected to the top of the stove base, and the space formed between the bottom of the funnel portion and the guide disc is a second premixing chamber. In summary, the setting of the guide disc reduces the injection speed of the premixed gas and thus reduces the injection speed of the flame, thereby ultimately reducing the noise generated during the combustion of the burner; forming a second premixing chamber, the premixing effect is more sufficient and efficient, effectively improving the thermal efficiency; and effectively reducing the flameout and backfire phenomena of the burner.

Description

Technical Field

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

[0002] There are currently two main types of commercial burners. One is directly connected to the combustible gas for combustion, and the other is to premix the combustible gas and air, and then pass them into the premixed gas stove for combustion. The former is mainly used in households; the latter is mainly used in commercial kitchens such as canteens, restaurants, hotels, and food processing plants. Its characteristics are high power, fast heating, and fast tempering.

[0003] Among the commonly used premixed gas stoves at present, there is a type of burner that is the most popular among consumers. Its structure includes a base at the lower end and a burner at the upper end. The base is provided with a premixing chamber, and a distributor is placed in the burner. The inner wall of the distributor is provided with a plurality of annularly arranged air jets. The combustible gas premixed in the premixing chamber (collectively referred to as premixed gas in this invention) is ejected from the burner through the air jets; a side ignition device or other constantly open flame device is provided next to the distributor for igniting the premixed gas ejected from the air jets.

[0004] In the premixed combustion stove of the above structure, since the premixed gas is directly ejected from the burner through the jet port, the flame injection speed is fast, the noise is loud, and the thermal efficiency is low. Moreover, because the combustible gas is premixed, a too fast flame injection speed will cause insufficient premixing, which is prone to air combustion or unstable combustion with the flame sometimes large and sometimes small. Summary of the Invention

[0005] The purpose of the present invention is to provide a hybrid burner to address the deficiencies in the prior art.

[0006] The flammable gas of the present invention is heated and cooled after it is cooled and is put into the flammable gas chamber, and the flammable gas is put into the flammable gas chamber through the flammable gas chamber, and the flammable gas chamber is cooled and cooled after it is cooled.

[0007] The inner surface of the burner flame core is a cylindrical structure, and the burner flame core includes an air inlet portion at the lower end, an air outlet and combustion portion at the upper end, and a flange at the top. The air inlet portion, the air outlet and combustion portion, and the flange are all annular structures and are arranged in a circular stepped structure with increasing diameters from bottom to top. The air inlet portion and the air outlet and combustion portion are arranged inside the burner, and the lower surface of the flange covers and abuts against the top edge of the burner, thereby firmly fixing the burner flame core inside the burner.

[0008] The inner surface of the burner fire core is formed with a fire outlet groove and a fire outlet hole located below the fire outlet groove; the bottom edge of the air inlet portion is formed with an air inlet hole adapted to the guide hole, and the air inlet hole is connected to the fire outlet hole and the fire outlet groove upwards;

[0009] The outer diameter of the air inlet portion is smaller than the outer diameter of the guide disc;

[0010] The inner diameter of the burner core is 99.8mm-100.2mm, the outer diameter of the outermost edge is 122.3mm-122.7mm, and the height is 49.8mm-50.2mm;

[0011] The guide disc has a diameter of 122.3mm to 122.7mm and a height of 17.8mm to 18.2mm;

[0012] The guide holes are provided in a plurality and distributed in a circular array on the guide disc;

[0013] The air inlet holes are provided in a plurality and distributed in a circular array on the inner surface of the burner fire core;

[0014] The fire holes are provided in a plurality and distributed in a circular array on the inner surface of the burner fire core;

[0015] The fire outlet grooves are provided in a plurality and distributed in an array downward on the inner surface of the burner head fire distribution core.

[0016] As a further solution of the present invention: the diameter of the guide holes is 122.3 mm to 122.7 mm, the number of the guide holes is 36 and they are distributed in a circular array on the guide disc;

[0017] The diameter of the air inlet holes is 5.8mm-6.2mm, the number of the air inlet holes is 36 and they are distributed in a circular array on the inner surface of the burner core;

[0018] The diameter of the fire holes is 2.1mm~2.5mm, the number of the fire holes is 36 and they are distributed in a circular array on the inner surface of the burner core;

[0019] The number of the fire outlet grooves is 7 and they are distributed in an array downward on the inner surface of the burner head fire distribution core.

[0020] As a further solution of the present invention: a first vent is formed on the bottom of the furnace seat, and a second vent is formed on the lower end of the side of the furnace seat.

[0021] As a further solution of the present invention: the first air vent has a circular hole structure and is distributed obliquely, and the angle formed by the central axis of the hole of the first air vent and the vertical direction is 29.8 degrees to 30.2 degrees; there are multiple first air vents and they are distributed in a circular array at the bottom of the furnace base.

[0022] As a further solution of the present invention: the aperture of the first vent is 7.8 mm to 8.2 mm, and the number of the first vent is 12.

[0023] As a further solution of the present invention: a boss for placing the guide disc is provided inside the burner.

[0024] Beneficial effects of the present invention:

[0025] 1. On the one hand, by using a guide disc, the premixed gas is blocked by the guide disc and diverted, flowing out from the guide hole to the burner flame distributor core, and finally discharged from the burner flame distributor core and burned; the setting of the guide disc reduces the injection speed of the premixed gas and thus the injection speed of the flame, ultimately achieving the goal of reducing the noise generated by the burner during combustion.

[0026] 2. On the other hand, the provision of the guide disc allows the space between the bottom of the funnel and the guide disc to form a new premixing chamber, namely the second premixing chamber, so that the premixed gas can be premixed a second time in the second premixing chamber, thereby making the premixing effect of the premixed gas more complete and efficient, effectively improving thermal efficiency.

[0027] 3. On the other hand, the guide disc is fitted to the bottom of the burner's flame core to increase airtightness. When the burner is burning, if a flashback occurs due to an unexpected situation, the guide disc can effectively prevent the flame from flowing back, reducing safety hazards. Moreover, the setting of the guide disc also allows the burner to concentrate the flame in the combustion part of the burner during combustion, reducing heat loss and further improving thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the decomposition structure of the present invention.

[0029] Figure 2 It is another decomposition structure schematic diagram of the present invention.

[0030] Figure 3 for Figure 2 A structural diagram from another perspective.

[0031] Figure 4 It is a partial structural diagram of the present invention.

[0032] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure in the AA direction.

[0033] Figure 6 It is a structural schematic diagram of the burner fire core of the present invention.

[0034] Figure 7 It is a structural schematic diagram of the guide disc of the present invention.

[0035] Figure 8 for Figure 2 A partial enlarged schematic diagram of point B in the middle.

[0036] Figure 9 It is a partial enlarged schematic diagram of the structure of the burner of the present invention.

[0037] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure in the CC direction.

[0038] Reference numerals include:

[0039] 1—furnace base,

[0040] 11—first premixing chamber, 12—first vent, 13—second vent;

[0041] 2-stove head,

[0042] 21 - funnel part, 22 - combustion part, 23 - second premixing chamber;

[0043] 3—Stove head fire core,

[0044] 31 - air inlet, 32 - air outlet and combustion part, 33 - flange, 34 - fire outlet groove, 35 - fire outlet hole, 36 - air inlet; 4 - guide disc,

[0045] 41—diversion hole;

[0046] 51—ignition needle, 52—fire detection needle, 53—fire probe;

[0047] e—the angle formed by the central axis of the hole of the first vent and the vertical direction. DETAILED DESCRIPTION

[0048] The present invention is described in detail below with reference to the accompanying drawings.

[0049] like Figures 1 to 8As shown, in an embodiment of the present invention: a mixing burner comprises a stove base 1 at the lower end and a burner head 2 at the upper end, the stove base 1 is formed with a first premixing chamber 11 for premixing combustible gas and air, and further comprises a burner head flame-dividing core 3 detachably mounted inside the burner head 2 and used for exhaust combustion, and a guide disc 4 fitted on the bottom of the burner head flame-dividing core 3 and used for diverting the direction of the premixed gas; the guide disc 4 is provided with a guide hole 41, and the premixed gas flows into the burner head after being diverted by the guide disc 4 The liquid flows through the guide hole 41 and then flows to the burner fire-distributing core 3 from the guide hole 41; the burner 2 is a bowl-shaped structure with open top and bottom, including a funnel portion 21 at the lower end and a combustion portion 22 at the upper end for placing the burner fire-distributing core 3, the guide disc 4 is arranged inside the burner 2 and at the same time covers and is clamped on the inclined arc surface of the funnel portion 21; the lower end of the funnel portion 21 is connected to the stove base 1, and the space formed from the bottom of the funnel portion 21 to the guide disc 4 is the second premixing chamber 23.

[0050] On the one hand, the use of the guide disc 4 blocks the premixed gas from the guide disc 4 and diverts it, allowing it to flow out of the guide hole 41 to the burner flame distributor 3, where it ultimately exits and burns. The provision of the guide disc 4 reduces the jet velocity of the premixed gas, thereby reducing the jet velocity of the flame, ultimately reducing the noise generated by the burner during combustion. On the other hand, the provision of the guide disc 4 creates a new premixing chamber, namely, the second premixing chamber 23, in the space between the bottom of the funnel 21 and the guide disc 4. This allows the premixed gas to undergo a secondary premixing process in the second premixing chamber 23, thereby achieving a more complete and efficient premixing effect for the premixed gas and effectively improving thermal efficiency. On the other hand, the guide disc 4 is fitted to the bottom of the burner flame core 3 to increase the airtightness, so that when the burner is burning, if a flashback occurs due to an unexpected situation, the guide disc 4 can effectively prevent the flame from flowing back, reducing safety hazards; moreover, the setting of the guide disc 4 also enables the burner to concentrate the flame in the combustion part 22 of the burner 2 during combustion, reducing heat loss and further improving thermal efficiency.

[0051] It should be noted that the burner in the prior art also includes an ignition needle 51, a fire detection needle 52 and a fire starter 53, which belong to conventional technology and will not be described in detail in the independent claims of the present invention. For details, please refer to the ignition needle in the existing burner.

[0052] 51. Related technologies of fire probe 52 and fire source 53.

[0053] In a further embodiment, the inner surface of the burner flame core 3 is a cylindrical structure, and the burner flame core 3 includes an air inlet 31 at the lower end, an air outlet combustion part 32 at the upper end, and a flange 33 at the top. The air inlet 31, the air outlet combustion part 32, and the flange 33 are all annular structures and are distributed in a circular stepped structure with increasing diameters from bottom to top; the air inlet 31 and the air outlet combustion part 32 are

[0054] The flame section 32 is positioned within the burner 2. The lower surface of the flange 33 overlaps and abuts the top edge of the burner 2, securing the burner 2's flame core within the burner 2. This arrangement allows for a detachable connection between the burner 2 and the flame core 3, facilitating removal and installation, cleaning, and storage. It allows for individual component replacement or repair to address specific issues, reducing burner maintenance costs and extending burner life. The flame core 3 can be interchanged for different burner applications, providing increased functionality and suitability. This also further enhances airtightness and improves thermal efficiency, ensuring safe and stable burner combustion and effectively preventing flameout and flashback.

[0055] During installation, the guide disc 4 is placed through the top opening of the burner 2, so that the edge of the guide disc 4 abuts and covers the inclined curved surface of the funnel portion 21. The burner flame divider 3 is then placed downward from the top opening of the burner 2 along the air inlet 31, so that the air inlet 31 is in contact with the guide disc 4. During use, the premixed gas is premixed in the first premixing chamber 11 and then flows into the second premixing chamber 23 for secondary premixing. The premixed gas then continues to flow upward until it is blocked by the guide disc 4 and dispersed, then flows into the guide hole 41 and finally flows out to the inner surface of the burner flame divider 3 for combustion.

[0056] In a further solution, the inner surface of the burner fire core 3 is formed with a fire outlet groove 34 and a fire outlet hole 35 located below the fire outlet groove 34; the bottom edge of the air inlet part 31 is formed with an air inlet hole 36 that is compatible with the guide hole 41, and the air inlet hole 36 is connected to the fire outlet hole 35 and the fire outlet groove 34 upward. Specifically, since the flame ejection speed of the fire hole 35 is too fast, it is easy to cause flame separation. Therefore, the premixed gas ejected from the fire hole 35 needs a sufficient distance to complete effective and sufficient combustion. The setting of the fire outlet groove 34 allows the premixed gas to be effectively dispersed and distributed in the fire outlet groove 34, thereby achieving more sufficient combustion and effectively improving thermal efficiency. Since the premixed gas ejected from the fire outlet groove 34 has a slow speed, the flame distance is shorter during combustion, and the lower the flame is in the fire outlet groove 34, the lower the thermal efficiency. Therefore, the design scheme of setting the fire hole 35 below the fire outlet groove 34 is adopted to increase the optimal combustion distance of the flame, maximize the strengths and avoid the weaknesses, give full play to the respective effectiveness of the fire hole 35 and the fire outlet groove 34, and at the same time avoid the corresponding shortcomings, thereby further improving thermal efficiency.

[0057] In a further embodiment, the outer diameter of the air inlet portion 31 is smaller than the outer diameter of the guide disc 4. Specifically, since the outer diameter of the air inlet portion 31 is smaller than the outer diameter of the guide disc 4, the space formed between the guide disc and the air inlet portion 31 has a certain degree of airtightness. When the premixed gas flows out of the guide hole 41, it will converge there, enhancing the airtightness and effectively preventing the premixed gas from leaking from other gaps. This also avoids the situation in which the burner is used, such as flame instability due to insufficient air intake or even flameout due to excessive air-fuel ratio. This ensures that the premixed gas can enter the air inlet hole 36 in a more concentrated and stable manner and finally be discharged and burned from the fire outlet hole 35 and the fire outlet groove 34, thereby making the burner less likely to flameout and backfire. At the same time, since the space formed between the guide plate and the air inlet portion 31 has a certain degree of airtightness, it further plays a role in re-premixing the premixed gas, and effectively avoids the safety hazard caused by the premixed gas being directly ejected and burned from a larger premixing chamber or other gaps.

[0058] A further solution is that the inner diameter of the burner flame core 3 is 99.8mm~100.2mm, the outer diameter of the outermost edge is 122.3mm~122.7mm, and the height is 49.8mm~50.2mm; the diameter of the guide disc 4 is 122.3mm~122.7mm, and the height is 17.8mm~18.2mm; the guide holes 41 are provided in plurality and are distributed in a circular array on the guide disc 4; the air inlet holes 36 are provided in plurality and are distributed in a circular array on the inner surface of the burner flame core 3; the fire outlet holes are provided in plurality and are distributed in a circular array on the inner surface of the burner flame core 3; the fire outlet grooves 34 are provided in plurality and are distributed in a downward array on the inner surface of the burner flame core 3. After repeated tests, it was found that the best effect can be achieved if the burner flame core 3 and the guide disc 4 adopt the following size scheme, namely: the inner diameter of the burner flame core 3 is preferably 100mm, the outer diameter of the outermost edge is preferably 122.5mm and the height is preferably 50mm; the diameter of the guide disc 4 is preferably 122.5mm,

[0059] At the same time, the multi-hole arrangement and the arrangement of the plurality of fire outlet grooves 34 allow the premixed gas to enter the inner surface of the burner flame core 3 from different directions and burn, forming a plurality of small fire outlet units, thereby making the premixed gas burn more fully and efficiently.

[0060] In a further embodiment, the guide holes 41 have a diameter of 122.3mm to 122.7mm, and there are 36 of them distributed in a circular array on the guide disc 4. The air inlet holes 36 have a diameter of 5.8mm to 6.2mm, and there are 36 of them distributed in a circular array on the inner surface of the burner flame divider 3. The air outlet holes have a diameter of 2.1mm to 2.5mm, and there are 36 of them distributed in a circular array on the inner surface of the burner flame divider 3. The fire outlet grooves 34 are 7 in number and distributed in a downward array on the inner surface of the burner flame divider 3. The multi-hole arrangement and the multiple fire outlet grooves 34 allow the premixed gas to enter the inner surface of the burner flame divider 3 from different directions for combustion, forming multiple small fire outlet units, thereby ensuring more complete and efficient combustion of the premixed gas. On the other hand, if there are too many openings, the aperture will inevitably be small, which will affect the output effect of the premixed gas; if there are too few openings, the premixed gas cannot be effectively distributed in all directions on the inner surface of the burner flame core 3, so that the premixed gas cannot achieve the best combustion effect; if the aperture is too large, the premixed gas output will be uneven, and even cause safety hazards. Therefore, after repeated experiments, the following optimal size scheme was obtained, namely: the aperture of the guide hole 41 is preferably 122.5mm, the number of the guide holes 41 is preferably 36, and they are distributed in a circular array on the guide disc 4; the aperture of the air inlet 36 is preferably 6mm, the number of the air inlet holes 36 is preferably 36, and they are distributed in a circular array on the inner surface of the burner flame core 3; the aperture of the fire outlet is preferably 2.3mm, the number of the fire outlet is preferably 36, and they are distributed in a circular array on the inner surface of the burner flame core 3; the number of the fire outlet grooves 34 is preferably 7, and they are distributed in a downward array on the inner surface of the burner flame core 3.

[0061] In a further embodiment, a first air vent 12 is formed at the bottom of the furnace base 1, and a second air vent 13 is formed at the lower end of the side of the furnace base 1. During use, the first air vent 12 allows air in, and the second air vent 13 allows combustible gas to be input. Specifically, by arranging the first air vent 12 and the second air vent 13 in different directions, air and combustible gas enter the first premixing chamber 11 from different directions for premixing, forming a certain amount of convection and increasing the flow rate of the gas, so that the air and combustible gas can be more fully premixed, forming a premixed gas with better combustion effect.

[0062] In a further embodiment, the first air vents 12 are circular and obliquely distributed, with the angle between the central axis of the first air vent 12 and the vertical direction being 29.8 to 30.2 degrees, preferably 30 degrees. A plurality of the first air vents 12 are provided and arranged in a circular array at the bottom of the furnace base 1. Specifically, the oblique distribution of the first air vents 12 imparts a certain degree of rotation to the incoming air, thereby enabling the air to be more thoroughly premixed with the combustible gas upon entering the first premixing chamber 11.

[0063] In a further embodiment, the first air vents 12 have a diameter of 7.8 mm to 8.2 mm, and the number of the first air vents 12 is 12. Preferably, the diameter of the first air vents 12 is 8 mm, and the number of the first air vents 12 is 12. Providing too many first air vents 12 will result in an excessively high air-fuel ratio in the burner, while providing too few will prevent air from effectively entering the first premix chamber 11. Therefore, repeated experiments have shown that the optimal effect is achieved when the diameter of the first air vents 12 is 8 mm and the number is 12.

[0064] In a further embodiment, a boss is provided inside the burner head 2 for placing the guide disc 4, thereby further increasing the airtightness, further reducing the noise generated by the burner during combustion, and further improving the thermal efficiency.

[0065] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance its performance unprecedented in the past and become a product with great practical value.

[0066] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A mixed burner, comprising a furnace seat at the lower end and a burner head at the upper end, wherein the furnace seat is formed with a The first premixing chamber for premixing with air is characterized by: It also includes a burner flame distributor core that is detachably mounted inside the burner and used for gas combustion, and a guide disc that is fitted on the bottom of the burner flame distributor core and used for diverting the direction of the premixed gas; The guide disc is provided with a guide hole. The premixed gas flows into the guide hole after being diverted by the guide disc, and then flows from the guide hole to the burner fire core. The burner is a bowl-shaped structure with open top and bottom, including a funnel portion at the lower end and a combustion portion at the upper end for receiving the burner's fire core. The guide disc is arranged inside the burner and simultaneously covers and is clamped on the inclined arc surface of the funnel portion. The lower end of the funnel portion is connected to the stove base, and the space between the bottom of the funnel portion and the guide disc serves as the second premixing chamber. The inner surface of the burner flame core is a cylindrical structure, and the burner flame core includes an air inlet portion at the lower end, an air outlet and combustion portion at the upper end, and a flange at the top. The air inlet portion, the air outlet and combustion portion, and the flange are all annular structures and are arranged in a circular stepped structure with increasing diameters from bottom to top. The air inlet portion and the air outlet and combustion portion are arranged inside the burner, and the lower surface of the flange covers and abuts against the top edge of the burner, thereby firmly fixing the burner flame core inside the burner. The inner surface of the burner fire core is formed with a fire outlet groove and a fire outlet hole located below the fire outlet groove; the bottom edge of the air inlet portion is formed with an air inlet hole adapted to the guide hole, and the air inlet hole is connected to the fire outlet hole and the fire outlet groove upwards; The outer diameter of the air inlet portion is smaller than the outer diameter of the guide disc; The inner diameter of the burner core is 99.8mm-100.2mm, the outer diameter of the outermost edge is 122.3mm-122.7mm, and the height is 49.8mm-50.2mm; The guide disc has a diameter of 122.3mm to 122.7mm and a height of 17.8mm to 18.2mm; The guide holes are provided in a plurality and distributed in a circular array on the guide disc; The air inlet holes are provided in a plurality and distributed in a circular array on the inner surface of the burner fire core; The fire holes are provided in a plurality and distributed in a circular array on the inner surface of the burner fire core; The fire outlet grooves are provided in a plurality and distributed in an array downward on the inner surface of the burner head fire distribution core.

2. A hybrid burner according to claim 1, characterized in that: The diameter of the guide holes is 122.3 mm to 122.7 mm, and the number of the guide holes is 36 and they are distributed in a circular array on the guide disc; The diameter of the air inlet holes is 5.8mm-6.2mm, the number of the air inlet holes is 36 and they are distributed in a circular array on the inner surface of the burner core; The diameter of the fire holes is 2.1mm~2.5mm, the number of the fire holes is 36 and they are distributed in a circular array on the inner surface of the burner core; The number of the fire outlet grooves is 7 and they are distributed in an array downward on the inner surface of the burner head fire distribution core.

3. The hybrid burner according to claim 1, characterized in that: A first vent is formed on the bottom of the furnace seat, and a second vent is formed on the lower end of the side of the furnace seat.

4. A hybrid burner according to claim 3, characterized in that: The first vent is a circular hole structure and is distributed obliquely. The angle formed by the central axis of the hole of the first vent and the vertical direction is 29.8 degrees to 30.2 degrees. There are multiple first vents and they are distributed in a circular array at the bottom of the furnace base.

5. The hybrid burner according to claim 3, characterized in that: The aperture of the first vent is 7.8 mm to 8.2 mm, and the number of the first vent is 12.

6. The hybrid burner according to claim 1, characterized in that: A boss for placing the guide disc is provided inside the burner head.

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