CN208764921U - Full premix surface-type burner with high efficiency burnt gas air mixing structure - Google Patents
Full premix surface-type burner with high efficiency burnt gas air mixing structure Download PDFInfo
- Publication number
- CN208764921U CN208764921U CN201821433310.2U CN201821433310U CN208764921U CN 208764921 U CN208764921 U CN 208764921U CN 201821433310 U CN201821433310 U CN 201821433310U CN 208764921 U CN208764921 U CN 208764921U
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- Prior art keywords
- chamber
- fuel gas
- gas
- premix
- air duct
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- 238000002156 mixing Methods 0.000 title claims abstract description 26
- 239000002737 fuel gas Substances 0.000 claims abstract description 52
- 239000007789 gas Substances 0.000 claims abstract description 47
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 239000000567 combustion gas Substances 0.000 abstract description 16
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
Full premix surface-type burner with high efficiency burnt gas air mixing structure, belong to technical field of combustion equipment, the utility model is difficult to reach gas-air to solve conventional burners and uniformly blend, and burner is easily tempered, efficiency of combustion is low, and polluted gas discharges the high problem of content.Annular fuel gas chamber is located in premix chamber and is coaxially disposed, one end of fuel gas conduit is connected by annular buckle with the entrance of annular fuel gas chamber, the other end passes through premix chamber and is connected with fuel gas source, annular fuel gas is intracavitary to be equipped with interior air duct, outer air duct is equipped between annular fuel gas chamber and premix chamber, annular fuel gas chamber is connected by the gas jet orifice on inside and outside wall with interior air duct and outer air duct respectively, and multiple swirl vanes are radially distributed in the end of annular fuel gas chamber, swirl vane and is axially arranged with angle.The full premix surface-type burner with high efficiency burnt gas air mixing structure of the utility model can be such that air adequately mixes with combustion gas, and gas-air finally may be implemented by swirl vane and uniformly mix.
Description
Technical field
The utility model relates to the full premix surface-type burners with high efficiency burnt gas air mixing structure, belong to burning and set
Standby technical field.
Background technique
The gas-air mixing structure that existing pre-mixing type combustion apapratus uses is mostly all very simple, it is difficult to it is equal to reach gas-air
The effect of even blending, therefore burner is caused easily to be tempered, efficiency of combustion is low, and polluted gas discharges the consequences such as content height.
Three kinds of mixing structure forms are common technique form below, and typical structure is illustrated, as follows:
1. swirl vane/mixed wind wheel type
The patent No.: CN105546533A
The tail end end of fuel gas conduit is successively equipped with more gas guns and multiple swirl vanes；Combustion gas is respectively via gas injection
Combustion gas pore on spray orifice and fuel gas conduit on rifle is even into aditus laryngis；Meanwhile combustion air and the combustion gas are right in aditus laryngis
Punching uniformly mixing, then further promote uniformly to mix under the agitation by combustion gas tube end swirl vane is arranged in, mixing distance contracting
It is short, effectively prevent due to combustion gas mixing unevenness that generate flame temperature uneven, to reduce NOx emission.
Disadvantage: there is mixing dead zone, it is more uneven to be about close to aditus laryngis inner wall gas/air density component.
2. Venturi tube structure
The patent No.: WO2012007823A1
The downstream of fan is arranged in relative to air-flow (AF) for venturi passage type air/gas mixer.Mixer includes
Local pressure loss device is made of Venturi tube deferent in this case.Air/gas proportion adjustment is mainly passed through
It adjusts jet size (UGL) (UG2), is secondly the adjustment of flow regulator.Be placed on gas valve and venturi passage type air/
The flow regulator in connecting tube between gas mixer allows accurately to adjust supplied gas flow to have for firing
Burn optimum air/gas ratio of the mixed firinor fuel burning in head.
Disadvantage: the characteristic size of runner reduces, and flow velocity changes, and air side pressure is uprushed, and gas/air is caused to have
Apparent pressure difference, fuel gas injection is insufficient, causes gas/air uneven in radially mixing.
3. orifice plate/screen net structure
The patent No.: US6834504B2
Rotational flow generator has axially extending, the chamber of at least approximate rotational symmetry, and burning is preferred by entrance slit
Ground is parallel to longitudinal axis flowing.The tangential orientation of the slit shape entrance more or less as these as a result, combustion air pass through
Strong tangential speed component is gone through, causes to interact with towards burner opening or the axial component of outlet, institute is passed through with vortex
State interior chamber.By in the case cover near combustion air inlet slit and/or via the central supply in burner axis
The device of device optionally or complementally carries out the fuel-rich of fuel.With the mixing portion of the combustion air of fuel in burner
Downstream part in arrange reticular structure.The reticular structure is made of at least one silk screen across flow cross section.
Disadvantage: reticular structure, main function are so that mixed gas is reinforced turbulent flow after reticular structure, and then reinforce mixed
It closes, but arrives reticular structure gap very little, it can the raw larger resistance of convection current movable property.
Utility model content
The purpose of the utility model is to provide the full premix surface-type burner with high efficiency burnt gas air mixing structure, with
It solves the above problems.
Full premix surface-type burner with high efficiency burnt gas air mixing structure include premix chamber, fuel gas conduit, interior air duct,
Outer air duct, annular fuel gas chamber, gas jet orifice, swirl vane and annular buckle；
Annular fuel gas chamber is located in premix chamber and is coaxially disposed, and one end of fuel gas conduit passes through annular buckle and annular fuel gas chamber
Entrance be connected, the other end passes through premix chamber and is connected with fuel gas source, and annular fuel gas is intracavitary equipped with interior air duct, annular fuel gas chamber
Outer air duct is equipped between premix chamber, annular fuel gas chamber passes through gas jet orifice on inside and outside wall and interior air duct and outer air duct phase respectively
Connection, multiple swirl vanes are radially distributed in the end of annular fuel gas chamber, swirl vane and are axially arranged with angle.
Preferred: premix chamber is the cylinder of both ends open.
Preferred: annular fuel gas chamber includes internal layer horizontal tube, outer layer horizontal tube, the first reducer pipe and the second reducer pipe；
Internal layer horizontal tube is located in outer layer horizontal tube, and the left and right ends of internal layer horizontal tube pass through the first reducer pipe and respectively
Two reducer pipes are connected with the left and right ends of outer layer horizontal tube, are provided with combustion gas on the outer wall of internal layer horizontal tube and outer layer horizontal tube
Spray orifice, equidistantly uniformly distributed and opening direction is central axial vertical with premix chamber for gas jet orifice.
Preferred: the end face of premix chamber one end is equipped with blower flange, is provided with the first bolt hole on the end face of blower flange,
The end face of the premix chamber other end is equipped with connecting flange, is provided with the second bolt hole on the end face of connecting flange.
The utility model is had the effect that compared with existing product due to special annular fuel gas cavity configuration, combustion gas warp
Gas jet orifice is easy to reach enough Jet Penetration Depths after spraying outside respectively inwards, and outer air duct is approximately Venturi tube structure, thus
Air and combustion gas it is available it is more sufficient mix, finally form eddy flow by swirl vane and further strengthen mixing, therefore sky
Gas and combustion gas can achieve in limited premix distance to be sufficiently mixed, to realize that gas-air uniformly blends, and then is improved
Burning.
Detailed description of the invention
Fig. 1 is the knot of the full premix surface-type burner described in the utility model with high efficiency burnt gas air mixing structure
Structure schematic diagram；
Fig. 2 is the structural schematic diagram of annular fuel gas chamber；
Fig. 3 is that air and combustion gas flow to schematic diagram:
Fig. 4 is the structural schematic diagram of premix chamber.
In figure: 1- premix chamber；2- fuel gas conduit；Air duct in 3-；4- outer air duct；5- annular fuel gas chamber；51- internal layer horizontal tube；
52- outer layer horizontal tube；The first reducer pipe of 53-；The second reducer pipe of 54-；7- gas jet orifice；8- swirl vane；9- annular buckle；
10- draught fan impeller；11- blower flange；13- connecting flange；The first bolt hole of 111-；The second bolt hole of 131-.
Specific embodiment
The utility model preferred embodiment is elaborated below according to attached drawing.
As shown in Figures 1 to 4, the full premix surface-type described in the utility model with high efficiency burnt gas air mixing structure
Burner includes premix chamber 1, fuel gas conduit 2, interior air duct 3, outer air duct 4, annular fuel gas chamber 5, gas jet orifice 7, swirl vane 8 and ring
Shape buckle 9；
Annular fuel gas chamber 5 is located in premix chamber 1 and is coaxially disposed, and one end of fuel gas conduit 2 is fired by annular buckle 9 with annular
The entrance of air cavity 5 is connected, and the other end passes through premix chamber 1 and is connected with fuel gas source, and interior air duct 3 is equipped in annular fuel gas chamber 5,
Be equipped with outer air duct 4 between annular fuel gas chamber 5 and premix chamber 1, annular fuel gas chamber 5 respectively by gas jet orifice 7 on inside and outside wall with
Interior air duct 3 is connected with outer air duct 4, and multiple swirl vanes 8 are radially distributed in the end of annular fuel gas chamber 5, is connected by screw to,
Swirl vane 8 and annular fuel gas chamber 5 is fixed, swirl vane 8 and it is axially arranged with angle.
Further, premix chamber 1 is the cylinder of both ends open.
Further, annular fuel gas chamber 5 includes internal layer horizontal tube 51, outer layer horizontal tube 52, the first reducer pipe 53 and the second change
Diameter pipe 54；
Internal layer horizontal tube 51 is located in outer layer horizontal tube 52, and the left and right ends of internal layer horizontal tube 51 pass through the first variable diameter respectively
Pipe 53 and the second reducer pipe 54 are connected with the left and right ends of outer layer horizontal tube 52, internal layer horizontal tube 51 and outer layer horizontal tube 52
Outer wall on be provided with gas jet orifice 7, equidistantly uniformly distributed and opening direction is central axial vertical with premix chamber 1 for gas jet orifice 7.
Further, the end face of 1 one end of premix chamber is equipped with blower flange 11, the first spiral shell is provided on the end face of blower flange 11
Keyhole 111, the end face of 1 other end of premix chamber are equipped with connecting flange 13, are provided with the second bolt hole on the end face of connecting flange 13
131。
Draught fan impeller 10 is pumped into air 1F in high efficiency burnt gas air mixing structure upstream, and air forms edge in premix chamber 1
The 4 access 2F of outer air duct that is flowed on the inside of the outside of annular fuel gas chamber 5, premix chamber 1, and formed and flowed on the inside of annular fuel gas chamber 5
Interior 3 access 3F of air duct；Combustion gas is fed by outer combustion gas pipeline along access 4F, the formation ring access 5F in annular fuel gas chamber 5, and one
Divide and 7F is flowed out to outer air duct 4 by the gas jet orifice 7 in 5 outside of annular fuel gas chamber；Another part is by the combustion gas on the inside of annular fuel gas chamber 5
Spray orifice 7 flows out 6F to interior air duct 3.Combustion gas 7F through outer air duct 4 is mixed with air 2F, and is blended by swirl vane 8, is formed equal
Even gas-air mixed gas 9F；Gaseous mixture 8F is formed after the combustion gas 6F in interior air duct 3 is mixed with air 3F, final interior outer air duct is mixed
It closes gas to converge in high efficiency burnt gas air mixing structure downstream, forms homogeneous mixture 10F.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (4)
1. with high efficiency burnt gas air mixing structure full premix surface-type burner, it is characterised in that: including premix chamber (1),
Fuel gas conduit (2), interior air duct (3), outer air duct (4), annular fuel gas chamber (5), gas jet orifice (7), swirl vane (8) and annular buckle
(9)；
The annular fuel gas chamber (5) is located in premix chamber (1) and is coaxially disposed, and one end of fuel gas conduit (2) buckles (9) by annular
It is connected with the entrance of annular fuel gas chamber (5), the other end passes through premix chamber (1) and is connected with fuel gas source, in annular fuel gas chamber (5)
Equipped with interior air duct (3), outer air duct (4) are equipped between annular fuel gas chamber (5) and premix chamber (1), annular fuel gas chamber (5) passes through respectively
Gas jet orifice (7) on inside and outside wall is connected with interior air duct (3) and outer air duct (4), and multiple swirl vanes (8) are radially distributed in ring
The end of shape gas chamber (5), swirl vane (8) and is axially arranged with angle.
2. the full premix surface-type burner according to claim 1 with high efficiency burnt gas air mixing structure, feature
Be: the premix chamber (1) is the cylinder of both ends open.
3. the full premix surface-type burner according to claim 1 with high efficiency burnt gas air mixing structure, feature
Be: the annular fuel gas chamber (5) includes internal layer horizontal tube (51), outer layer horizontal tube (52), the first reducer pipe (53) and second
Reducer pipe (54)；
The internal layer horizontal tube (51) is located in outer layer horizontal tube (52), and the left and right ends of internal layer horizontal tube (51) pass through the respectively
One reducer pipe (53) and the second reducer pipe (54) are connected with the left and right ends of outer layer horizontal tube (52), internal layer horizontal tube (51) and
It is provided on the outer wall of outer layer horizontal tube (52) gas jet orifice (7), the equidistant uniformly distributed and opening direction of gas jet orifice (7) and premix
Chamber (1) it is central axial vertical.
4. the full premix surface-type burner according to claim 1 with high efficiency burnt gas air mixing structure, feature
Be: the end face of described premix chamber (1) one end is equipped with blower flange (11), is provided with the first spiral shell on the end face of blower flange (11)
Keyhole (111), the end face of premix chamber (1) other end are equipped with connecting flange (13), and the is provided on the end face of connecting flange (13)
Two bolts hole (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433310.2U CN208764921U (en) | 2018-09-03 | 2018-09-03 | Full premix surface-type burner with high efficiency burnt gas air mixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433310.2U CN208764921U (en) | 2018-09-03 | 2018-09-03 | Full premix surface-type burner with high efficiency burnt gas air mixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208764921U true CN208764921U (en) | 2019-04-19 |
Family
ID=66134137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821433310.2U Withdrawn - After Issue CN208764921U (en) | 2018-09-03 | 2018-09-03 | Full premix surface-type burner with high efficiency burnt gas air mixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208764921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028059A (en) * | 2018-09-03 | 2018-12-18 | 哈尔滨电气股份有限公司 | Full premix surface-type burner with high efficiency burnt gas air mixing structure |
| CN114225732A (en) * | 2021-12-22 | 2022-03-25 | 哈尔滨名诺环保科技有限公司 | Air-gas static mixer with resistance reduction and efficiency improvement functions |
-
2018
- 2018-09-03 CN CN201821433310.2U patent/CN208764921U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028059A (en) * | 2018-09-03 | 2018-12-18 | 哈尔滨电气股份有限公司 | Full premix surface-type burner with high efficiency burnt gas air mixing structure |
| CN109028059B (en) * | 2018-09-03 | 2024-02-02 | 哈尔滨电气股份有限公司 | Full premix surface type burner with efficient gas-air mixing structure |
| CN114225732A (en) * | 2021-12-22 | 2022-03-25 | 哈尔滨名诺环保科技有限公司 | Air-gas static mixer with resistance reduction and efficiency improvement functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190419 Effective date of abandoning: 20240202 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190419 Effective date of abandoning: 20240202 |