CN117739340B - Multilayer three-dimensional combustor - Google Patents
Multilayer three-dimensional combustor Download PDFInfo
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- CN117739340B CN117739340B CN202311784389.9A CN202311784389A CN117739340B CN 117739340 B CN117739340 B CN 117739340B CN 202311784389 A CN202311784389 A CN 202311784389A CN 117739340 B CN117739340 B CN 117739340B
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- combustion
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 50
- 239000000446 fuel Substances 0.000 claims abstract description 35
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
- 241001330002 Bambuseae Species 0.000 claims 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
- 239000011425 bamboo Substances 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000002737 fuel gas Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The invention belongs to the technical field of combustors, and particularly relates to a multilayer three-dimensional combustor which comprises an air inlet component and a mixing component, wherein one end of the air inlet component is fixedly communicated with the mixing component, one end of the mixing component is fixedly communicated with a combustion component, the combustion component comprises a connecting ring plate, an outer cylinder is fixedly connected to the outer side of one end of the connecting ring plate, an inner cylinder is fixedly connected to the inner side of one end of the connecting ring plate, a plugging ring is fixedly connected between the outer cylinder and one end of the inner cylinder, and kidney-shaped holes are formed in the surface of the inner cylinder. According to the invention, the mixture of fuel and air is combusted in the inner cylinder, and the plurality of air outlet holes are three-dimensionally distributed in the length direction of the truncated cone-shaped combustion head, so that the combustion area of flame can be increased, and the fuel can be fully expanded, so that the fuel can be combusted more fully; and the fuel with sufficient bottom can be re-ignited and burned by the outside flame in the outward discharging process.
Description
Technical Field
The invention belongs to the technical field of combustors, and particularly relates to a multilayer three-dimensional combustor.
Background
The burner is a device for spraying fuel and air to mix and burn in a certain mode, and is classified into an industrial burner, a civil burner and a special burner according to the types and application fields, wherein the industrial burner is widely applied, commonly known as a burner, the types and specifications of the industrial burner are various, the burner has the large types of fuel oil, fuel gas and fuel coal, the application field is wide, and the burner is needed in industrial occasions needing to burn the fuel to heat materials or react.
The industrial burner generally used has a relatively concentrated combustion point when in use, so that the flame is relatively concentrated when in combustion, the fuel cannot be fully expanded when in combustion, and besides the air mixed before combustion, the air around the combustion point cannot be efficiently utilized, so that part of fuel gas is discharged along with tail gas when not being combusted, and the combustion efficiency of the fuel is reduced.
Disclosure of Invention
The present invention aims to provide a multi-layer three-dimensional burner which can fully expand fuel and burn the fuel more fully so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a three-dimensional combustor of multilayer, includes air inlet part and mixed part, the fixed intercommunication of one end of air inlet part has mixed part, mixed part's one end fixed intercommunication has combustion part, combustion part includes the link ring plate, the outside fixedly connected with urceolus of link ring plate one end, the inboard fixedly connected with inner tube of link ring plate one end, fixedly connected with shutoff ring between the one end of urceolus and inner tube, waist shape hole has been seted up on the surface of inner tube, the inside fixedly connected with round platform shape combustion head of inner tube, evenly distributed's venthole has been seted up on the surface of round platform shape combustion head, the other end fixed intercommunication of link ring plate has the connecting pipe, the one end of connecting pipe and one side fixed intercommunication of air inlet part, one side of mixed part is provided with fuel supply part.
Further, the air inlet part comprises an air box, an impeller is connected to the inside of the air box in a rotating mode, a driving motor is fixedly connected to one end of the air box, an output shaft of the driving motor is fixedly connected with the middle of the impeller, and an air inlet cover is fixedly communicated with the other end of the air box.
Further, an air inlet is formed in one side of the air inlet cover, and a grid is arranged on the air inlet.
Further, the one end fixedly connected with dryer of air inlet cover, the dryer runs through the air inlet cover, the lateral wall of dryer rotates and is connected with the pivot, the lateral wall fixedly connected with plectane of pivot, the one end fixedly connected with guide cylinder of bellows inner wall, the one end of guide cylinder corresponds the setting with the one end of dryer, the other end of guide cylinder corresponds the setting with the impeller.
Further, the mixing component comprises a square cylinder, the square cylinder is fixedly connected to an air outlet of the air box, one end of the square cylinder is fixedly connected with a connecting cylinder, the middle part of the square cylinder is fixedly connected with a V-shaped plate, one side of the square cylinder is fixedly connected with a support, a positive motor and a negative motor are fixedly installed on the support, and the inside of the square cylinder is symmetrically and rotationally connected with a rotating rod.
Further, one of them the one end of bull stick and positive and negative motor's output shaft fixed connection, two the equal fixedly connected with connector of the other end of bull stick, two rotate between the one end of connector and be connected with the connecting rod, the lateral wall fixedly connected with deep bead of bull stick.
Further, the connection ring plate is fixedly connected to one end of the connection cylinder, the waist-shaped holes are uniformly distributed on the surface of the inner cylinder, and one end of the connection pipe is fixedly communicated with one side of the bellows.
Further, the plurality of air outlet holes are distributed in a circular array, and the circular rings formed by the plurality of air outlet holes are distributed at equal intervals along the length direction of the circular truncated cone-shaped combustion head.
Further, the fuel supply part comprises a connecting end head, one end of the connecting end head is fixedly communicated with an air pipe, the middle part of the air pipe is fixedly communicated with a branch pipe, and the middle part of the branch pipe is provided with a valve.
Further, one end of the air pipe is fixedly communicated with one end of the side wall of the connecting cylinder, and one end of the branch pipe is fixedly communicated with the side wall of the air box.
Compared with the prior art, the invention has the beneficial effects that: the mixture of fuel and air is combusted in the inner cylinder, and the plurality of air outlets are distributed in a three-dimensional manner in the length direction of the truncated cone-shaped combustion head, so that the combustion area of flame can be increased, the fuel can be fully expanded, and the fuel can be combusted more fully; and the fuel with the sufficient bottom can be ignited and burnt again by the flame at the outer side in the outward discharging process, so that the combustion efficiency of the fuel is further improved, and in the combustion process, the air pumped by the air inlet component can enter between the outer cylinder and the inner cylinder through the connecting pipe and then is discharged through the kidney-shaped hole on the surface of the inner cylinder, so that fresh air is provided for fuel combustion, and the fuel combustion is more sufficient.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a bottom view of the present invention;
FIG. 3 is a schematic perspective view of an air intake member of the present invention;
FIG. 4 is a front cross-sectional view of an air intake member of the present invention;
FIG. 5 is a schematic perspective view of a hybrid component of the present invention;
FIG. 6 is a schematic perspective view of a combustion unit according to the present invention;
fig. 7 is a front cross-sectional view of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. An air intake member; 11. a wind box; 12. an impeller; 13. a driving motor; 14. an air inlet cover; 15. a grid; 16. an air duct; 17. a rotating shaft; 18. a circular plate; 19. a guide cylinder; 2. a mixing member; 21. a square cylinder; 22. a connecting cylinder; 23. a V-shaped plate; 24. a bracket; 25. a forward and reverse motor; 26. a rotating rod; 27. a connector; 28. a connecting rod; 29. a wind deflector; 3. a combustion component; 31. connecting the annular plates; 32. an outer cylinder; 33. an inner cylinder; 34. waist-shaped holes; 35. a connecting pipe; 36. a truncated cone-shaped combustion head; 37. an air outlet hole; 38. a plugging ring; 4. a fuel supply member; 41. a connecting end; 42. an air pipe; 43. a valve; 44. and a branch pipe.
Detailed Description
The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the invention and does not limit the scope of the invention strictly as claimed.
As shown in fig. 1, fig. 2, fig. 6 and fig. 7, a multilayer three-dimensional burner comprises an air inlet component 1 and a mixing component 2, wherein one end of the air inlet component 1 is fixedly communicated with the mixing component 2, one end of the mixing component 2 is fixedly communicated with a combustion component 3, the combustion component 3 comprises a connecting ring plate 31, an outer cylinder 32 is fixedly connected to the outer side of one end of the connecting ring plate 31, an inner cylinder 33 is fixedly connected to the inner side of one end of the connecting ring plate 31, a plugging ring 38 is fixedly connected between the outer cylinder 32 and one end of the inner cylinder 33, kidney-shaped holes 34 are formed in the surface of the inner cylinder 33, a round table-shaped combustion head 36 is fixedly connected to the inner side of the inner cylinder 33, uniformly distributed air outlet holes 37 are formed in the surface of the round table-shaped combustion head 36, connecting pipes 35 are fixedly communicated with one end of the connecting ring plate 31, one end of each connecting ring plate 31 is fixedly connected to one end of each connecting cylinder 22, a plurality of kidney-shaped holes 34 are uniformly distributed on the surface of the inner cylinder 33, one end of each air outlet 37 is fixedly communicated with one side of 11, a plurality of air outlet holes 37 are distributed in a circular array, the plurality of air outlet holes 37 are distributed along the length direction of the round table-shaped combustion head 2 is formed by uniformly distributed on one side of the round table-shaped combustion component 4, and the uniformly distributed on one side of the round table-shaped combustion component 4 is provided with the equal distance along the length of the combustion component 2.
According to the above structure, when in use, the fuel supply part 4 is used for introducing the fuel gas into the mixing part 2, the air is fed into the mixing part 2 through the air inlet part 1, the fuel gas and the air are mixed in contact with each other in the mixing part 2, and then are sprayed out through the air outlet holes 37 on the surface of the circular truncated cone-shaped combustion head 36, the mixture is combusted in the inner cylinder 33 through ignition, and the plurality of air outlet holes 37 are distributed in a circular array, and the circular rings formed by the plurality of air outlet holes 37 are distributed at equal intervals along the length direction of the circular truncated cone-shaped combustion head 36, so that the plurality of air outlet holes 37 are distributed in a three-dimensional manner along the length direction of the circular truncated cone-shaped combustion head 36, the combustion area of the flame can be increased, the fuel can be fully expanded, the fuel can be fully combusted, the combustion efficiency of the fuel can be further improved, the air pumped by the air inlet part 1 can enter between the outer cylinder 32 and the inner cylinder 33 through the connecting pipe 35 in the combustion process, and then be discharged through the kidney-shaped holes 34 on the surface of the inner cylinder 33, and the fresh air can be provided for the fuel to be fully combusted in the combustion process.
As shown in fig. 3 and 4, the air inlet component 1 comprises an air box 11, an impeller 12 is rotatably connected in the air box 11, one end of the air box 11 is fixedly connected with a driving motor 13, an output shaft of the driving motor 13 is fixedly connected with the middle part of the impeller 12, the other end of the air box 11 is fixedly communicated with an air inlet cover 14, an air inlet is formed in one side of the air inlet cover 14, and a grid 15 is arranged on the air inlet.
According to the above structure, when in use, the impeller 12 is driven to rotate by the driving motor 13, the middle part of the impeller 12 generates negative pressure, so that air is sucked in through the air inlet of the air inlet cover 14 and is input into the mixing part 2 through the air outlet of the air box 11, and the grid 15 can prevent large impurities from entering the air box 11.
As shown in fig. 3 and 4, one end of the air inlet cover 14 is fixedly connected with an air duct 16, the air duct 16 penetrates through the air inlet cover 14, the side wall of the air duct 16 is rotatably connected with a rotating shaft 17, the side wall of the rotating shaft 17 is fixedly connected with a circular plate 18, one end of the inner wall of the air box 11 is fixedly connected with a guide cylinder 19, one end of the guide cylinder 19 is correspondingly arranged with one end of the air duct 16, and the other end of the guide cylinder 19 is correspondingly arranged with the impeller 12.
According to the above structure, when more air is required, the rotary shaft 17 drives the circular plate 18 to rotate, so that the external air enters the guide cylinder 19 through the air duct 16, and the efficiency of the air entering the bellows 11 can be improved.
As shown in fig. 3 and 5, the mixing component 2 includes a square cylinder 21, the square cylinder 21 is fixedly connected at an air outlet of the bellows 11, one end of the square cylinder 21 is fixedly connected with a connecting cylinder 22, the middle part of the square cylinder 21 is fixedly connected with a V-shaped plate 23, one side of the square cylinder 21 is fixedly connected with a bracket 24, a positive and negative motor 25 is fixedly installed on the bracket 24, the inside of the square cylinder 21 is symmetrically and rotatably connected with a rotating rod 26, one end of one rotating rod 26 is fixedly connected with an output shaft of the positive and negative motor 25, the other ends of the two rotating rods 26 are fixedly connected with connectors 27, a connecting rod 28 is rotatably connected between one ends of the two connectors 27, and the side wall of the rotating rod 26 is fixedly connected with a wind shield 29.
According to the above structure, the outside air enters the square tube 21 and the connecting tube 22 through the air outlet of the bellows 11, one of the rotating rods 26 is driven to rotate by the positive and negative motor 25, and the two rotating rods 26 synchronously rotate through the transmission of the two connectors 27 and the connecting rod 28, so that the two wind shields 29 are driven to rotate by a certain angle, the gap between the wind shields 29 and the V-shaped plate 23 is regulated, and the flow of the air entering the mixing part 2 is regulated.
As shown in fig. 7, the fuel supply part 4 includes a connection end 41, one end of the connection end 41 is fixedly connected with a gas pipe 42, a branch pipe 44 is fixedly connected with the middle part of the gas pipe 42, a valve 43 is provided in the middle part of the branch pipe 44, one end of the gas pipe 42 is fixedly connected with one end of the side wall of the connection cylinder 22, and one end of the branch pipe 44 is fixedly connected with the side wall of the bellows 11.
According to the above structure, when in use, the external air source is communicated with one end of the connecting end 41, the fuel gas enters the connecting cylinder 22 through the air pipe 42 and is mixed with the air flowing in the connecting cylinder 22, and by opening the valve 43, part of the fuel gas enters the bellows 11 through the branch pipe 44 and is mixed with the air in advance, so that the uniformity of mixing the air and the fuel gas is improved.
The working principle of the invention is as follows: the impeller 12 is driven to rotate by the driving motor 13, negative pressure is generated in the middle of the impeller 12, air is sucked through the air inlet of the air inlet cover 14 and is input into the mixing part 2 through the air outlet of the air box 11, the grid 15 can prevent large external impurities from entering the air box 11, when more air is needed, the rotating shaft 17 drives the circular plate 18 to rotate, so that external air enters the guide cylinder 19 through the air box 16, the efficiency of entering the air box 11 can be improved, external air enters the square cylinder 21 and the connecting cylinder 22 through the air outlet of the air box 11, one rotary rod 26 is driven to rotate by the positive and negative motor 25, the two rotary rods 26 synchronously rotate through the transmission of the two connectors 27 and the connecting rods 28, thereby driving the two rotary plates 29 to rotate by a certain angle, adjusting the gap between the rotary plates 29 and the V-shaped plates 23, the flow rate of the air entering the mixing part 2 is regulated, the mixture burns in the inner cylinder 33 by ignition, because the plurality of air outlet holes 37 are distributed in a circular array, the circular rings formed by the plurality of air outlet holes 37 are distributed along the length direction of the circular table-shaped combustion head 36, the plurality of air outlet holes 37 are distributed in a three-dimensional way in the length direction of the circular table-shaped combustion head 36, the combustion area of flame can be increased, thereby the fuel can be fully expanded, the fuel can be fully combusted, the fuel with the full bottom can be re-ignited and combusted by the flame outside in the outward discharging process, the combustion efficiency of the fuel is further improved, the air pumped by the air inlet part 1 can enter between the outer cylinder 32 and the inner cylinder 33 through the connecting pipe 35 in the combustion process, and then is discharged through the kidney-shaped holes 34 on the surface of the inner cylinder 33 to provide fresh air for the fuel combustion, so that the fuel is combusted more fully.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (10)
1. The utility model provides a three-dimensional combustor of multilayer, includes air inlet part (1) and hybrid component (2), its characterized in that: the utility model discloses a combustion engine, including air inlet part (1), mixing part (2) are fixed to intercommunication, mixing part (2) are fixed to the one end intercommunication, combustion part (3) are including connecting ring plate (31), the outside fixedly connected with urceolus (32) of connecting ring plate (31) one end, the inboard fixedly connected with inner tube (33) of connecting ring plate (31) one end, fixedly connected with shutoff ring (38) between the one end of urceolus (32) and inner tube (33), waist shape hole (34) have been seted up on the surface of inner tube (33), the inside fixedly connected with round platform shape combustion head (36) of inner tube (33), evenly distributed's venthole (37) have been seted up on the surface of round platform shape combustion head (36), the other end fixedly connected with connecting pipe (35) of connecting ring plate (31), one end and one side of air inlet part (1) are fixed to be connected, one side of mixing part (2) is provided with fuel supply part (4).
2. A multi-layer stereoscopic burner according to claim 1, wherein: the air inlet part (1) comprises an air box (11), an impeller (12) is rotatably connected in the air box (11), a driving motor (13) is fixedly connected to one end of the air box (11), an output shaft of the driving motor (13) is fixedly connected with the middle part of the impeller (12), and an air inlet cover (14) is fixedly communicated with the other end of the air box (11).
3. A multi-layer stereoscopic burner according to claim 2, wherein: an air inlet is formed in one side of the air inlet cover (14), and a grid (15) is arranged on the air inlet.
4. A multi-layer stereoscopic burner according to claim 3, wherein: one end fixedly connected with dryer (16) of air inlet cover (14), dryer (16) run through air inlet cover (14), the lateral wall rotation of dryer (16) is connected with pivot (17), the lateral wall fixedly connected with plectane (18) of pivot (17), the one end fixedly connected with guide section of thick bamboo (19) of bellows (11) inner wall, the one end of guide section of thick bamboo (19) corresponds the one end setting with dryer (16), the other end of guide section of thick bamboo (19) corresponds the setting with impeller (12).
5. A multi-layer stereoscopic burner according to claim 4, wherein: the mixing component (2) comprises a square cylinder (21), the square cylinder (21) is fixedly connected to an air outlet of the air box (11), one end of the square cylinder (21) is fixedly connected with a connecting cylinder (22), the middle part of the square cylinder (21) is fixedly connected with a V-shaped plate (23), one side of the square cylinder (21) is fixedly connected with a support (24), a positive motor (25) is fixedly installed on the support (24), and rotating rods (26) are symmetrically connected to the inside of the square cylinder (21).
6. A multi-layer stereoscopic burner according to claim 5, wherein: one end of each rotating rod (26) is fixedly connected with an output shaft of a positive and negative motor (25), the other ends of the two rotating rods (26) are fixedly connected with connectors (27), connecting rods (28) are rotatably connected between one ends of the connectors (27), and the side wall of each rotating rod (26) is fixedly connected with a wind shield (29).
7. A multi-layer stereoscopic burner according to claim 6, wherein: the connecting ring plate (31) is fixedly connected to one end of the connecting cylinder (22), the kidney-shaped holes (34) are uniformly distributed on the surface of the inner cylinder (33), and one end of the connecting pipe (35) is fixedly communicated with one side of the bellows (11).
8. A multi-layer stereoscopic burner according to claim 7, wherein: the air outlet holes (37) are distributed in a circular array, and circular rings formed by the air outlet holes (37) are distributed at equal intervals along the length direction of the truncated cone-shaped combustion head (36).
9. A multi-layer stereoscopic burner according to claim 8, wherein: the fuel supply component (4) comprises a connecting end head (41), one end of the connecting end head (41) is fixedly communicated with an air pipe (42), the middle part of the air pipe (42) is fixedly communicated with a branch pipe (44), and the middle part of the branch pipe (44) is provided with a valve (43).
10. A multi-layer stereoscopic burner according to claim 9, wherein: one end of the air pipe (42) is fixedly communicated with one end of the side wall of the connecting cylinder (22), and one end of the branch pipe (44) is fixedly communicated with the side wall of the air box (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784389.9A CN117739340B (en) | 2023-12-23 | 2023-12-23 | Multilayer three-dimensional combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311784389.9A CN117739340B (en) | 2023-12-23 | 2023-12-23 | Multilayer three-dimensional combustor |
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| Publication Number | Publication Date |
|---|---|
| CN117739340A CN117739340A (en) | 2024-03-22 |
| CN117739340B true CN117739340B (en) | 2024-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311784389.9A Active CN117739340B (en) | 2023-12-23 | 2023-12-23 | Multilayer three-dimensional combustor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397772A (en) * | 2018-05-07 | 2018-08-14 | 上海全颉环境设备有限公司 | A kind of combustion head |
| CN110260310A (en) * | 2019-06-28 | 2019-09-20 | 江苏卡瓦诺热能科技有限公司 | A kind of all-premixing burner |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10213311A (en) * | 1997-01-29 | 1998-08-11 | Yazaki Corp | Low nox gas burner |
| CN211739070U (en) * | 2020-03-09 | 2020-10-23 | 深圳市佳运通电子有限公司 | Low-pollution burner structure for oil field heating furnace |
| CN111457371B (en) * | 2020-05-12 | 2024-06-07 | 华侨大学 | Low nitrogen burner |
| CN113188124A (en) * | 2021-05-18 | 2021-07-30 | 王春龙 | Combustion head of low-nitrogen combustor |
| CN114234187A (en) * | 2021-12-27 | 2022-03-25 | 北京瑞晨航宇能源科技有限公司 | High-speed low-nitrogen combustor for heating furnace and combustion method thereof |
| CN217604163U (en) * | 2022-05-25 | 2022-10-18 | 广东粤有厨业科技有限公司 | Energy-saving cooking utensils |
| CN219913048U (en) * | 2023-04-28 | 2023-10-27 | 上海焦耳波动节能环保科技有限公司 | Back mixed type quenching and stabilizing furnace end with dispersed air inlet |
| CN116498964B (en) * | 2023-06-12 | 2024-06-25 | 广东共能智造装备有限公司 | Low-nitrogen-emission combustor |
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2023
- 2023-12-23 CN CN202311784389.9A patent/CN117739340B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397772A (en) * | 2018-05-07 | 2018-08-14 | 上海全颉环境设备有限公司 | A kind of combustion head |
| CN110260310A (en) * | 2019-06-28 | 2019-09-20 | 江苏卡瓦诺热能科技有限公司 | A kind of all-premixing burner |
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| CN117739340A (en) | 2024-03-22 |
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