CN103292328A - Full-combustion-type efficient energy-saving gas furnace end - Google Patents
Full-combustion-type efficient energy-saving gas furnace end Download PDFInfo
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- CN103292328A CN103292328A CN2013102325855A CN201310232585A CN103292328A CN 103292328 A CN103292328 A CN 103292328A CN 2013102325855 A CN2013102325855 A CN 2013102325855A CN 201310232585 A CN201310232585 A CN 201310232585A CN 103292328 A CN103292328 A CN 103292328A
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Abstract
Provided is a full-combustion-type efficient energy-saving gas furnace end. The full-combustion-type efficient energy-saving gas furnace end comprises a furnace bottom, wherein a reverse-circular-truncated-cone-shaped furnace body is formed by the circumference of the upper bottom face of the furnace bottom in an upward-extending and outward-extending mode, an area defined by the furnace body is a combustor, at least one layer of combustion holes are formed in the furnace body, the number of the combustion holes of each layer is at least three, the combustion holes are evenly distributed in the plane of a crossly-cut furnace body in a ring-shaped mode, the ejecting directions of flames of the combustion holes are the same, the top of a flame generated by one combustion hole of every two adjacent combustion holes is basically ejected to the middle or the bottom of a flame generated by the other combustion hole, so that flame circles which rotate in the same direction are formed by the flames of all the combustion holes in the combustor. The full-combustion-type efficient energy-saving gas furnace end saves energy, protects the environment, is remarkable in energy-saving effect, scientific in principle, simple and endurable in structure, low in cost and easy to popularize, and can further be in cooperation with other physical energy-saving methods to further increase advantages of a furnace.
Description
Technical field
The present invention relates to a kind of is the full burning-type effective energy-saving gas burner of raw material with the combustion gas.
Background technology
Tradition gas furnace energy-conservation adopts following several method mostly, and the one, adopt the way of insulation, prevent heat energy dissipation with heat-barrier material as heat-insulation layer, and reach purpose of energy saving, this kind method is the simplest, and cost is also minimum, but effect is general; The 2nd, adopt the method that absorbs used heat, to reduce the toxic emission temperature, reach energy-conservation purpose, modal mode is to adopt to utilize waste gas residual heat when burning, heat water generates hot water or boiling water in addition, as the disclosed a kind of energy-saving gas cooker of Chinese patent literature CN101629732, it is exactly this type of technology; The 3rd, increase porous regenerator radiant panel or radiation net and improve the thermal efficiency, as the disclosed energy-saving cooking of Chinese patent literature CN101581455, block the accumulation of heat radiant panel that is provided with porous at described flue gas flow channel and improve the thermal efficiency.
Above-mentioned several method all has the physics heat loss that minimizing is produced by heat conduction, thermal convection current, heat radiation, light radiation, improve the effect of the thermal efficiency, but its effect is limited.
Namely improve the combustion rate aspect for reducing the chemical heat loss, always strengthening air proportioning, fully mixing research in advance in the past.Though better action is arranged, can not fundamentally solve the chemical heat loss that combustion process itself produces.So combustion rate is generally at 15%-20%.Best also less than 30%.Add the physics heat loss, its integrated heat efficiency is below 20%.
As everyone knows, burning is violent oxidation reaction and with the luminous phenomenon of heating.Visible light part when flame is exactly burning.Temperature is at 600 ℃-3000 ℃.Flame can divide end flame, middle flame and top flame from bottom to up, and end flame is the part that flame takes fire most, is positioned at the bottommost of flame, and the middle part that middle flame is positioned at flame is the most violent part of flame combustion; The top flame is positioned at the top of flame, is the major part that forms waste gas, contains a large amount of unburneds carbon monoxide and unburned combustible black particle completely.In the flue gas behind the flame of top, also have the non-luminous slow oxidative reaction of a small amount of heating, flue-gas temperature is at 600 ℃-300 ℃.
How more up hill and dale a large amount of unburned material that exists in the flame of top further to be burnt, with the further raising thermal efficiency, minimizing carbon monoxide and unburned combustible black particle discharge capacity, be target finally to reach full burning, realize that not only energy-conservation but also purpose environmental protection was a great difficult problem of puzzlement stove and accessory manufacturing.
Summary of the invention
In order to overcome the problems referred to above, the present invention provides a kind of full burning-type effective energy-saving gas burner to society, this gas burner can further reduce carbon monoxide and unburned combustible black particle discharge capacity, simultaneously, can further improve combustion rate and the thermal efficiency of stove.
Technical scheme of the present invention is: a kind of full burning-type effective energy-saving gas burner is provided, comprise furnace bottom, the circumferential of the upper bottom surface of described furnace bottom goes up and the formation one reverse frustoconic body of heater that stretches out, described body of heater institute area surrounded is the combustion chamber, be provided with at least three every layer the burner port of one deck at least at described body of heater, described burner port evenly is arranged in the plane of transversal body of heater in the form of a ring, the flame injection direction of described burner port is identical, and the top flame of the flame that a burner port in per two adjacent burner ports produces is sprayed onto middle flame or the end flame place of the flame that another burner port produces basically, makes the flame of all burner ports form the flame circle of equidirectional rotation in the combustion chamber; To reach the purpose of completing combustion basically.
As improvement of the present invention, the flame that described another burner port produces mixes mutually with the flame envelope of described middle flame or end flame.
As improvement of the present invention, shift to install between the described adjacent two layers burner port.
As improvement of the present invention, described one deck at least is three layers, wherein the burner port of last layer is called the top layer burner port, described top layer burner port evenly is arranged in the top layer burner port plane of transversal body of heater in the form of a ring, the axis of all top layer burner ports and same inscribed circle are tangent, and intersect the extended line of the first top layer burner port axis in the adjacent top layer burner port and the axis of the second top layer burner port, on the on line between the intersection point that its intersection point intersects in the axis of the 3rd adjacent top layer burner port of the axis of the second top layer burner port and back one and the outlet of the second top layer burner port, and apart from the scope of 1/10 to 1/2 between the last intersection point of exporting to of the described second top layer burner port.
As improvement of the present invention, also comprise the middle level burner port, the burning of described middle level is positioned on the body of heater of described top layer burner port below, described middle level burner port evenly is arranged in the burner port plane, middle level of transversal body of heater in the form of a ring, the axis of all middle level burner ports and same inscribed circle are tangent, and the extended line of the extended line of the burner port axis, first middle level in the adjacent middle level burner port and the axis of the second middle level burner port intersects, on the on line between the intersection point that its intersection point intersects in the axis of the 3rd adjacent middle level burner port of the axis of the second middle level burner port and back one and the outlet of the second middle level burner port, and apart from the scope of 1/5 to 2/3 between the last intersection point of exporting to of the described second middle level burner port.
As improvement of the present invention, described middle level burner port is towards the middle level of oblique upper burner port.
As improvement of the present invention, also comprise the bottom burner port, described bottom burner port is uniformly distributed in the bottom of body of heater, on the furnace bottom or on the circle of the intersection of body of heater and furnace bottom, the axis of all bottom burner ports and the circle of intersection are tangent, and the extended line of the extended line of the first bottom burner port axis in the adjacent bottom burner port and the axis of the second bottom burner port intersects, on the on line between the intersection point that its intersection point intersects in the axis of the 3rd adjacent bottom burner port of the axis of the second bottom burner port and back one and the outlet of the second bottom burner port, and apart from the scope of 1/5 to 2/3 between the last intersection point of exporting to of the described second bottom burner port.
As improvement of the present invention, encircle in the flame that ring and middle level burner port constitute in the flame that described bottom burner port constitutes, and the flame outer shroud that described top layer burner port constitutes is basically in same plane.
As improvement of the present invention, be provided with outward extending edge described body of heater suitable for reading.
As improvement of the present invention, also comprise the middle level burner port, the burning of described middle level is positioned on the body of heater of described top layer burner port below, the top flame of the flame that described middle level burner port produces is sprayed onto middle flame or the end flame portion of the flame that another top layer burner port produces basically, and described top flame is fully burned in the combustion chamber.
As improvement of the present invention, also comprise the bottom burner port, described bottom burner port is positioned on the bottom, furnace bottom of body of heater or the intersection of body of heater and furnace bottom, the top flame of the flame that described bottom burner port produces is sprayed onto the middle flame portion of flame that upper base grate firing hole burning produces basically, and described top flame is fully burned in the combustion chamber.
As improvement of the present invention, also comprise the bottom burner port, described bottom burner port is positioned on the bottom, furnace bottom of body of heater or the intersection of body of heater and furnace bottom, the middle flame portion of the flame that produces of bottom burner port made described top flame be fully burned in the combustion chamber during the top flame of the flame that described bottom burner port produces was sprayed onto basically.
The present invention can further reduce carbon monoxide and unburned combustible black particle discharge capacity, simultaneously, can further improve stove combustion rate and the thermal efficiency, thereby reaches the purpose of environmental protection and energy saving; In addition, the advantage that the present invention also has the principle science, manufacturing is simple, with low cost, fault rate is low and very easily promote.
Description of drawings
Fig. 1 is the perspective view of a kind of embodiment of the present invention.
Fig. 2 is the perspective view at another visual angle of Fig. 1.
Fig. 3 is the top plan view structural representation of Fig. 1.
Fig. 4 is the A-A sectional structure schematic diagram among Fig. 3.
Fig. 5 is the floor map (the top layer burner port) that the axis of present embodiment shown in Figure 1 crosses.
Fig. 6 is use status architecture schematic diagram embodiment illustrated in fig. 4.
The specific embodiment
See also Fig. 1 to Fig. 4, what Fig. 1 to Fig. 4 disclosed is a kind of full burning-type effective energy-saving gas burner 100, comprise furnace bottom 1, the circumferential of the upper bottom surface of described furnace bottom 1 goes up and the formation one reverse frustoconic body of heater 2 that stretches out, 2 area surrounded of described body of heater are combustion chamber 3, be provided with three layers burner port 4 at described body of heater 2, wherein, the burner port 4 of last layer is called top layer burner port 41, described top layer burner port 41 is arranged in the plane at top layer burner port 41 places of transversal body of heater 2 equably in the form of a ring, and the top flame of the flame that a top layer burner port in per two adjacent top layer burner ports 41 produces is sprayed onto middle flame or the end flame portion of the flame that another top layer burner port 41 produces basically, and described top flame 3 is fully burned in the combustion chamber; Middle level burning 42 is positioned on the body of heater of described top layer burner port 41 belows, and the top flame of the flame that a middle level burner port in per two adjacent middle level burner ports 42 produces is sprayed onto middle flame or the end flame portion of the flame that another middle level burner port 42 produces basically, and described top flame 3 is fully burned in the combustion chamber; Bottom burner port 43 is positioned on the bottom, furnace bottom 1 of body of heater 2 or the intersection of body of heater 2 and furnace bottom 1, and the top flame of the flame that a middle level burner port in per two adjacent bottom burner ports 43 produces is sprayed onto the middle flame portion of flame that another bottom burner port 43 produces basically, make the flame of all burner ports 4 in combustion chamber 3, form the flame circle of equidirectional rotation, allow described top flame in combustion chamber 3, be fully burned; This design can allow burns again with the top flame of the flame that comes out of different burner ports of layer end flame or the middle flame by other burner port, make the combustible species in the flame of top further burned, like this, not only can improve heat utilization efficiency and combustion rate with the amount combustion gas, and can reduce discharge of harmful gases, be conducive to environmental protection; The top flame that being sprayed onto basically among the present invention refers to adjacent burner port 4 over against or slightly on the upper side or on slightly on the lower side the end flame or middle flame that are sprayed onto another burner port.
Among the present invention, described top layer burner port 41 is evenly distributed on the same garden of body of heater 2 on week, and the axis direction of top layer burner port 41 is towards unanimity, and the point of contact of the described inscribed circle of mistake; Described axis is on the Z direction, and the angle on itself and plane, inscribed circle place can be selected being between 1 to 15 degree, and the axis direction is in the combustion chamber.In the present embodiment, described middle level burner port 42 is towards the middle level of oblique upper burner port, or/and bottom burner port 43 is the bottom burner ports towards oblique upper.
Among the present invention, the burning plane (flame apical ring) that the burning plane (encircling in the flame) that the burning plane (flame base ring) that described bottom burner port 43 constitutes and middle level burner port 42 constitute and described top layer burner port 41 constitute is in same plane, so-called burning plane refers to the burner port circumferentia that flame constitutes when burning with one deck, in the present embodiment, can change the angle of inclination on the Z direction of middle level burner port 42 and bottom burner port 43, make the burning plane of bottom burner port 43 formations and the burning plane that middle level burner port 42 constitutes, all the burning plane that constitutes with top layer burner port 41 is in same plane, and middle level flame and/or bottom flame will push away on the flame of upper strata, form the flame chevron.For the ease of placing iron pan, be provided with outward extending edge 21 described body of heater 2 suitable for reading.
See also Fig. 5, Fig. 5 is the floor map (the top layer burner port) that the axis of present embodiment shown in Figure 1 crosses.This drawing clean and tidy, three top layer burner ports 41 have only drawn among the figure, from figure as can be known, described top layer burner port 41 evenly is arranged in top layer burner port 41 planes of transversal body of heater in the form of a ring, the axis of all top layer burner ports 41 and same inscribed circle 420 are tangent, and intersect the extended line of the first top layer burner port, 411 axis 412 in the adjacent top layer burner port 41 and the axis of the second top layer burner port 413 414, on the on line between the intersection point 418 that its intersection point 417 intersects in the axis 416 of the 3rd adjacent top layer burner port 415 of the axis 414 of the second top layer burner port 413 and back one and the outlet 419 of the second top layer burner port 413, and apart from from the outlet 419 of the described second top layer burner port 413 in the scope of 1/10 to 1/2 last intersection point.
The structure of similar top layer burner port 41, the present invention also comprises middle level burner port 42, described middle level burning 42 is positioned on the body of heater of described top layer burner port 41 belows, described middle level burner port 42 evenly is arranged in middle level burner port 42 planes of transversal body of heater in the form of a ring, the axis of all middle level burner ports 42 and same inscribed circle are tangent, and the extended line of the extended line of the burner port axis, first middle level in the adjacent middle level burner port 42 and the axis of the second middle level burner port intersects, on the on line between the intersection point that its intersection point intersects in the axis of the 3rd adjacent middle level burner port of the axis of the second middle level burner port and back one and the outlet of the second middle level burner port, and distance (picture) in the scope of 1/5 to 2/3 between the last intersection point of exporting to of the described second middle level burner port.Described middle level burner port 42 is towards the middle level of oblique upper burner port.
The structure of similar top layer burner port 41, the present invention also comprises bottom burner port 43, described bottom burner port 43 is uniformly distributed in the bottom of body of heater 2, on the furnace bottom 1 or on the circle of the intersection of body of heater 2 and furnace bottom 1, the axis of all bottom burner ports 43 and the circle of intersection are tangent, and the extended line of the extended line of the first bottom burner port axis in the adjacent bottom burner port 43 and the axis of the second bottom burner port intersects, on the on line between the intersection point that its intersection point intersects in the axis of the 3rd adjacent bottom burner port of the axis of the second bottom burner port and back one and the outlet of the second bottom burner port, and apart from the scope of 1/5 to 2/3 between the last intersection point of exporting to of the described second bottom burner port.
See also Fig. 6, Fig. 6 is use status architecture schematic diagram embodiment illustrated in fig. 5.Shown in the figure, below gas burner 100, also be provided with gas mixing chamber 200, locular wall in gas mixing chamber 200 is respectively equipped with fuel gas inlet 210 and air intlet 220, after combustion gas and air are fully mixed, enter combustion chamber 3 internal combustion with the burner port 4 of certain flow rate by gas burner 100 again in mixing chamber 200.
Core of the present invention is the burner port 4 on the gas burner 100 to be designed to wherein the top flame that part or all burner port 4 comes out all will be burnt again by the end flame of other burner port 4 or middle flame, therefore, except the above embodiments, the present invention also can be designed to, a kind of full burning-type effective energy-saving gas burner, comprise furnace bottom 1, the circumferential of the upper bottom surface of described furnace bottom 1 goes up and the formation one reverse frustoconic body of heater 2 that stretches out, 2 area surrounded of described body of heater are combustion chamber 3, be provided with plural burner port 4 at described body of heater 2, wherein the top flame of the flame that produces of at least one described burner port 4 is sprayed onto middle flame or the end flame of the flame that another one burner port 4 produces basically, described top flame 3 is fully burned in the combustion chamber (drawing), is burnt again by the end flame of other burner port or middle flame as long as satisfy the top flame of the burner port 4 that has.
Obviously, can also do further improvement for the present invention, can be designed to comprise middle level burner port 42, described middle level burning 42 is positioned on the body of heater of described top layer burner port 41 belows, the top flame of the flame that described middle level burner port 42 produces is sprayed onto middle flame or the end flame portion of the flame that another top layer burner port 41 produces basically, described top flame 3 is fully burned in the combustion chamber, also can plays same effect.
Can also be designed to comprise bottom burner port 43, described bottom burner port 43 is positioned on the bottom, furnace bottom 1 of body of heater 2 or the intersection of body of heater 2 and furnace bottom 1, the top flame of the flame that described bottom burner port 43 produces is sprayed onto the middle flame portion of flame that upper base grate firing hole burning 41 produces basically, and described top flame 3 is fully burned in the combustion chamber.Perhaps described bottom burner port 43 is positioned on the bottom, furnace bottom 1 of body of heater 2 or the intersection of body of heater 2 and furnace bottom 1, the middle flame portion of the flame that produces of bottom burner port 42 during the top flame of the flame that described bottom burner port 43 produces is sprayed onto basically makes described top flame 3 be fully burned in the combustion chamber.
Among the present invention, what the torch of flame can level also can be state slightly up.
To have Fig. 1 of the present invention and entrust combustion gas measuring station in Shenzhen's to compare detection to gas burner shown in Figure 5 100, the result of the leading indicator of its detection is as follows:
As can be seen from the above table, the full burning jamb of the present invention is because of more thorough in the combustion chamber internal combustion.So carbon monoxide emission obviously reduces, also be because ratio of combustion is more thorough, so the slow oxidative reaction in the flue gas obviously reduces, cause the toxic emission temperature obviously to reduce, also reduced noise simultaneously.Have remarkable result at aspects such as improving the thermal efficiency, through test, burner of the present invention is compared with traditional burner burning, under the situation that produces same heat, can save combustion gas 62.5%.If vigorously promote the use in China, only the combustion gas of Jie Yueing just can be equivalent to reproduce a Daqing oil field, and the present invention is the good product of a energy-conserving and environment-protective.
It is to be noted: the end flame described in the present invention refers to be positioned at the flame part of burner port outlet, the flame of the mid portion at the bottom of middle flame refers between flame and the top flame, and the top flame is the head portion of flame.With indignant the containing of flame core, internal flame and the flame envelope of the flame of indication in the traditional sense be inequality.
Claims (9)
1. full burning-type effective energy-saving gas burner, comprise furnace bottom (1), the circumferential of the upper bottom surface of described furnace bottom (1) goes up and the formation one reverse frustoconic body of heater (2) that stretches out, described body of heater (2) institute area surrounded is combustion chamber (3), it is characterized in that: be provided with at least three every layer the burner port (4) of one deck at least at described body of heater (2), described burner port (4) evenly is arranged in the plane of transversal body of heater (2) in the form of a ring, the flame injection direction of described burner port (4) is identical, and the top flame of the flame that a burner port in per two adjacent burner ports (4) produces is sprayed onto middle flame or the end flame place of the flame that another burner port (4) produces basically, makes the flame of all burner ports (4) form the flame circle of equidirectional rotation in combustion chamber (3).
2. full burning-type effective energy-saving gas burner according to claim 1 is characterized in that: the flame that described another burner port (4) produces with described in the flame envelope of flame or end flame mix mutually.
3. full burning-type effective energy-saving gas burner according to claim 1 and 2 is characterized in that: shift to install between the described adjacent two layers burner port (4).
4. full burning-type effective energy-saving gas burner according to claim 1 and 2, it is characterized in that: described one deck at least is three layers, wherein the burner port of last layer is called top layer burner port (41), described top layer burner port (41) evenly is arranged in top layer burner port (41) plane of transversal body of heater in the form of a ring, axis and the same inscribed circle of all top layer burner ports (41) are tangent, and intersect the axis (414) of the extended line of first top layer burner port (411) axis (412) in the adjacent top layer burner port (41) and the second top layer burner port (413), its intersection point (417) is positioned on the on line between the outlet (419) of the intersection point (418) that the axis (416) of the axis (414) of the second top layer burner port (413) and back one adjacent the 3rd top layer burner port (415) intersects and the second top layer burner port (413), and apart from from the outlet (419) of the described second top layer burner port (413) in the scope of 1/10 to 1/2 last intersection point (418).
5. full burning-type effective energy-saving gas burner according to claim 4, it is characterized in that: also comprise middle level burner port (42), described middle level burner port (42) is positioned on the body of heater of described top layer burner port (41) below, described middle level burner port (42) evenly is arranged in middle level burner port (42) plane of transversal body of heater in the form of a ring, axis and the same inscribed circle of all middle level burner ports (42) are tangent, and the extended line of the extended line of the burner port axis, first middle level in the adjacent middle level burner port (42) and the axis of the second middle level burner port intersects, on the on line between the intersection point that its intersection point intersects in the axis of the 3rd adjacent middle level burner port of the axis of the second middle level burner port and back one and the outlet of the second middle level burner port, and apart from the scope of 1/5 to 2/3 between the last intersection point of exporting to of the described second middle level burner port.
6. full burning-type effective energy-saving gas burner according to claim 5, it is characterized in that: described middle level burner port (42) is towards the middle level of oblique upper burner port.
7. according to claim 5 or 6 described full burning-type effective energy-saving gas burners, it is characterized in that: also comprise bottom burner port (43), described bottom burner port (43) is uniformly distributed in the bottom of body of heater (2), on the furnace bottom (1) or on the circle of the intersection of body of heater (2) and furnace bottom (1), the axis of all bottom burner ports (43) and the circle of intersection are tangent, and the extended line of the extended line of the first bottom burner port axis in the adjacent bottom burner port (43) and the axis of the second bottom burner port intersects, on the on line between the intersection point that its intersection point intersects in the axis of the 3rd adjacent bottom burner port of the axis of the second bottom burner port and back one and the outlet of the second bottom burner port, and apart from the scope of 1/5 to 2/3 between the last intersection point of exporting to of the described second bottom burner port.
8. full burning-type effective energy-saving gas burner according to claim 7, it is characterized in that: encircle in the flame that ring and middle level burner port (42) constitute in the flame that described bottom burner port (43) constitutes, and the flame outer shroud that described top layer burner port (41) constitutes is basically in same plane.
9. according to the described full burning-type effective energy-saving gas burner of any one claim in the claim 1,2,5 and 6, it is characterized in that: at the outward extending edge (21) that is provided with suitable for reading of described body of heater (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310232585.5A CN103292328B (en) | 2013-06-13 | 2013-06-13 | Full burning-type effective saving gas burning stove head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310232585.5A CN103292328B (en) | 2013-06-13 | 2013-06-13 | Full burning-type effective saving gas burning stove head |
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| CN103292328B CN103292328B (en) | 2016-09-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126373U (en) * | 1992-07-01 | 1992-12-30 | 阳志峰 | High-efficiency stepped internally-spraying swirling flame burner |
| EP0554511A1 (en) * | 1992-02-08 | 1993-08-11 | Elektro- und Gas-Armaturen-Fabrik GmbH | Gasburner |
| US6092518A (en) * | 1996-10-09 | 2000-07-25 | Sourdillon | Cooking appliance, gas burner for this appliance and method for mounting such a gas burner on such appliance |
| CN101298913A (en) * | 2007-04-18 | 2008-11-05 | 玛日诺艾里公司 | Integral type high-efficiency burner crown with multilevel alternated discharge holes |
-
2013
- 2013-06-13 CN CN201310232585.5A patent/CN103292328B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0554511A1 (en) * | 1992-02-08 | 1993-08-11 | Elektro- und Gas-Armaturen-Fabrik GmbH | Gasburner |
| CN2126373U (en) * | 1992-07-01 | 1992-12-30 | 阳志峰 | High-efficiency stepped internally-spraying swirling flame burner |
| US6092518A (en) * | 1996-10-09 | 2000-07-25 | Sourdillon | Cooking appliance, gas burner for this appliance and method for mounting such a gas burner on such appliance |
| CN101298913A (en) * | 2007-04-18 | 2008-11-05 | 玛日诺艾里公司 | Integral type high-efficiency burner crown with multilevel alternated discharge holes |
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