CN208487614U - A kind of low NOx updraft burner - Google Patents
A kind of low NOx updraft burner Download PDFInfo
- Publication number
- CN208487614U CN208487614U CN201820564245.0U CN201820564245U CN208487614U CN 208487614 U CN208487614 U CN 208487614U CN 201820564245 U CN201820564245 U CN 201820564245U CN 208487614 U CN208487614 U CN 208487614U
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- combustion chamber
- fuel gas
- combustion
- low nox
- shell
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Abstract
The utility model relates to a kind of low NOx updraft burners, belong to fuel burner nozzle technical field.Major part updraft burner mostly uses mixed once burning structure at present, and flame temperature is high, and NOx content is high in combustion product, causes larger pollution to environment, thus the burner of low NOx drainage industrial furnace applications by be future development trend.But the nozzle structure of majority low NOx drainage is complicated at present, and middle low-temperature condition flame poor rigidity influences its popularization and application on heat-treatment furnace.The utility model includes end cap, shell, burner head, fuel gas conduit, flange, ignitor and flame detecting device, end cap is mounted on the side of shell, burner head is mounted on the other side of shell by flange, fuel gas conduit is mounted in shell, end cap is connected to burner head by fuel gas conduit, and ignitor and flame detecting device are installed on end cap.Combustion flame temperature is reduced, flame rigidity is improved, reduces NOx emission, improves heating quality.
Description
Technical field
The utility model relates to a kind of low NOx updraft burners, belong to fuel burner nozzle technical field.Be practically applicable to steel, it is coloured,
The heat-treatment furnace of the industrial furnace of the industries such as machinery, ceramics, especially air preheat.
Background technique
Major part updraft burner mostly uses mixed once burning structure at present, and flame temperature is high, NOx content in combustion product
Height causes larger pollution to environment, thus the burner of low NOx drainage industrial furnace applications by be future development trend.But mesh
The nozzle structure of preceding majority low NOx drainage is complicated, middle low-temperature condition flame poor rigidity, influence its popularization on heat-treatment furnace with
Using.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide a kind of structure design conjunction
The low NOx updraft burner of reason reduces combustion flame temperature, improves flame rigidity, reduces NOx emission, improves heating quality.
The technical scheme in the invention for solving the above technical problem is: the low NOx updraft burner, including end cap, shell
Body, burner head and flange, the end cap are mounted on the side of shell, and the burner head is mounted on the another of shell by flange
Side, design feature are: it further include fuel gas conduit, ignitor and flame detecting device, the fuel gas conduit is mounted in shell,
The end cap is connected to burner head by fuel gas conduit, and the ignitor and flame detecting device are installed on end cap.
Further, it is provided with combustion gas cavity, ignitor mounting hole, fire defector mounting hole on the end cap and pries through
The both ends in hole, the combustion gas cavity are fuel gas interface, and the ignitor is mounted on ignitor mounting hole, the flame
Detection device is mounted on fire defector mounting hole.
Further, the shell includes combustion air interface and combustion air flowing lumen body, the combustion air interface
It is connected to combustion air flowing lumen body, the fuel gas conduit is mounted in combustion air flowing lumen body.
Further, the burner head includes air fuel gas mixing head, combustion chamber and airflow duct, the air fuel gas
The shape of mixing head, combustion chamber and airflow duct be it is cylindric, the combustion chamber is mounted in airflow duct, the sky
Gas combustion gas mixing head is mounted on one end of combustion chamber.
Further, the fuel gas conduit is connect with air fuel gas mixing head, and one end of the fuel gas conduit is provided with multiple hang down
Direct combustion gas blowout discharge orifice and multiple inclination gas injection discharge orifices, and multiple vertical gas injection discharge orifices and multiple inclination gas injection discharge orifices with
The other end of combustion chamber, the fuel gas conduit is connected to combustion gas cavity.
Further, the combustion chamber includes combustion chamber and combustor exit, and the outer wall of the combustion chamber is provided with two groups
Supporting mechanism, two groups of supporting mechanisms each along combustion chamber axis direction be arranged, the multiple vertical gas injection discharge orifice and
Multiple inclination gas injection discharge orifices are respectively positioned in combustion chamber.
Further, the airflow duct includes connection ring and airflow duct outlet, and the connection ring and shell are logical
Flanged joint is crossed, the combustor exit is flushed with airflow duct outlet.
Further, the material of the combustion chamber is silicon carbide or heat-resisting alloy steel, and the shape of the combustion chamber is in cylinder
Tubular, the bore of the combustor exit are less than the bore of combustion chamber, include the support of identical quantity in two groups of supporting mechanisms
Protrusion, the quantity of support protrusion is n in every group of supporting mechanism, n >=3, and the support protrusion in every group of supporting mechanism is each along combustion
Burn the circumferential setting of room.
Further, the material of the airflow duct is silicon carbide or heat-resisting alloy steel, and the shape of the connection ring is
The end of annular shape, the combustor exit is provided with circular port, and circumferential along circular port is provided on airflow duct
Multiple convergence mouths, the quantity of the convergence mouth are m, and m >=2, the convergence mouth is petal-shaped circular arc, and the radius of the circular port is
R, the radius of the petal-shaped circular arc are r, and 0 < r≤R/2.
Further, the vertical gas injection discharge orifice and the axis of combustion chamber are vertically arranged, the vertical gas injection discharge orifice
Quantity be greater than 4, the angle between the inclination gas injection discharge orifice and the axis of combustion chamber is θ, 0 °≤θ≤60 °.
Compared with prior art, the utility model has the advantage that reduction combustion flame temperature, improves flame rigidity, subtracts
Few NOx emission, improves heating quality.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of the low NOx updraft burner of the utility model embodiment.
Fig. 2 is the schematic diagram of the section structure of the low NOx updraft burner of the utility model embodiment.
Fig. 3 is the right side structural representation of the burner head of the utility model embodiment.
Fig. 4 is the schematic view of the front view of the burner head of the utility model embodiment.
In figure: end cap 1, shell 2, burner head 3, fuel gas conduit 4, flange 5, ignitor 6, flame detecting device 7, gas chamber
Body 11, fire defector mounting hole 13, peep-hole 14, fuel gas interface 15, combustion air interface 21, helps ignitor mounting hole 12
Fire air circulation cavity 22, air fuel gas mixing head 31, combustion chamber 32, airflow duct 33, vertical gas injection discharge orifice 41, inclination
Gas injection discharge orifice 42, combustion chamber 320, support protrusion 321, combustor exit 322, connection ring 331, airflow duct outlet 332.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Embodiment.
Referring to FIG. 1 to FIG. 4, it should however be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc. are only used
To cooperate the revealed content of specification, so that those skilled in the art understands and reads, it is practical new to be not limited to this
The enforceable qualifications of type, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment it is practical new should all still to fall in this in the case where not influencing the effect of the utility model can be generated and the purpose that can reach
In the range of the revealed technology contents of type can be covered.Meanwhile if in this specification with reference as "upper", "lower", " left side ",
The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model
Scope.
Low NOx updraft burner in the present embodiment, including the igniting of end cap 1, shell 2, burner head 3, fuel gas conduit 4, flange 5/
Electrode 6 and flame detecting device 7, end cap 1 are mounted on the side of shell 2, and burner head 3 is mounted on the another of shell 2 by flange 5
Side, fuel gas conduit 4 are mounted in shell 2, and end cap 1 is connected to burner head 3 by fuel gas conduit 4, ignitor 6 and flame detecting device
7 are installed on end cap 1.
Combustion gas cavity 11, ignitor mounting hole 12, fire defector mounting hole 13 are provided on end cap 1 in the present embodiment
With peep-hole 14, the both ends of combustion gas cavity 11 are fuel gas interface 15, and ignitor 6 is mounted on ignitor mounting hole 12,
Flame detecting device 7 is mounted on fire defector mounting hole 13.
Shell 2 in the present embodiment includes combustion air interface 21 and combustion air flowing lumen body 22, combustion air interface
21 are connected to combustion air flowing lumen body 22, and fuel gas conduit 4 is mounted in combustion air flowing lumen body 22.
Burner head 3 in the present embodiment includes air fuel gas mixing head 31, combustion chamber 32 and airflow duct 33, air combustion
The shape of gas mixing head 31, combustion chamber 32 and airflow duct 33 be it is cylindric, combustion chamber 32 is mounted on airflow duct 33
Interior, air fuel gas mixing head 31 is mounted on one end of combustion chamber 32.
Fuel gas conduit 4 in the present embodiment is connect with air fuel gas mixing head 31, and one end of fuel gas conduit 4 is provided with multiple vertical
Gas injection discharge orifice 41 and multiple inclination gas injection discharge orifices 42, and multiple vertical gas injection discharge orifices 41 and multiple inclination gas injection discharge orifices
42 are connected to combustion chamber 32, and the other end of fuel gas conduit 4 is connected to combustion gas cavity 11.
Combustion chamber 32 in the present embodiment includes combustion chamber 320 and combustor exit 322, and the outer wall of combustion chamber 32 is provided with
Two groups of supporting mechanisms, two groups of supporting mechanisms are arranged each along the axis direction of combustion chamber 32, multiple vertical 41 Hes of gas injection discharge orifice
Multiple inclination gas injection discharge orifices 42 are respectively positioned in combustion chamber 320.
Airflow duct 33 in the present embodiment includes connection ring 331 and airflow duct outlet 332, connection ring 331 with
Shell 2 is connected by flange 5, and combustor exit 322 is flushed with airflow duct outlet 332.
The material of combustion chamber 32 in the present embodiment is silicon carbide or heat-resisting alloy steel, and the shape of combustion chamber 320 is in cylinder
Tubular, the bore of combustor exit 322 are less than the bore of combustion chamber 320, include the branch of identical quantity in two groups of supporting mechanisms
Support protrusion 321, the quantity of support protrusion 321 is n in every group of supporting mechanism, n >=3, the support protrusion in every group of supporting mechanism
321 are arranged each along the circumferential of combustion chamber 32.
The material of airflow duct 33 in the present embodiment is silicon carbide or heat-resisting alloy steel, and the shape of connection ring 331 is
The end of annular shape, combustor exit 322 is provided with circular port, and circumferential along circular port is provided on airflow duct 33
Multiple convergence mouths, the quantity for restraining mouth is m, and m >=2, convergence mouth is petal-shaped circular arc, and the radius of circular port is R, petal-shaped circular arc
Radius be r, and 0 < r≤R/2.
The axis of vertical gas injection discharge orifice 41 and combustion chamber 32 in the present embodiment is vertically arranged, vertical gas injection discharge orifice 41
Quantity be greater than 4, tilting the angle between gas injection discharge orifice 42 and the axis of combustion chamber 32 is θ, 0 °≤θ≤60 °.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to the utility model structure example explanation described in this specification.
All equivalence changes or simple change done according to structure, feature and principle described in the concept of the patent of the utility model, are wrapped
It includes in the protection scope of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or is substituted in a similar manner, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (10)
1. a kind of low NOx updraft burner, including end cap, shell, burner head and flange, the end cap are mounted on the side of shell,
The burner head is mounted on the other side of shell by flange, it is characterised in that: further includes fuel gas conduit, ignitor and flame inspection
Device is surveyed, the fuel gas conduit is mounted in shell, and the end cap is connected to burner head by fuel gas conduit, the ignitor and fire
Flame detection device is installed on end cap.
2. low NOx updraft burner according to claim 1, it is characterised in that: be provided with combustion gas cavity, point on the end cap
The both ends of fiery electrode mounting hole, fire defector mounting hole and peep-hole, the combustion gas cavity are fuel gas interface, the ignition power
Pole is mounted on ignitor mounting hole, and the flame detecting device is mounted on fire defector mounting hole.
3. low NOx updraft burner according to claim 1, it is characterised in that: the shell include combustion air interface and
Combustion air flowing lumen body, the combustion air interface are connected to combustion air flowing lumen body, and the fuel gas conduit is mounted on combustion-supporting
In air circulation cavity.
4. low NOx updraft burner according to claim 2, it is characterised in that: the burner head includes air fuel gas mixing
Head, combustion chamber and airflow duct, the shape of the air fuel gas mixing head, combustion chamber and airflow duct be it is cylindric,
The combustion chamber is mounted in airflow duct, and the air fuel gas mixing head is mounted on one end of combustion chamber.
5. low NOx updraft burner according to claim 4, it is characterised in that: the fuel gas conduit and air fuel gas mixing head
Connection, one end of the fuel gas conduit are provided with multiple vertical gas injection discharge orifices and multiple inclination gas injection discharge orifices, and multiple vertical
Gas injection discharge orifice and multiple inclination gas injection discharge orifices connect with combustion chamber, the other end and combustion gas cavity of the fuel gas conduit
It is logical.
6. low NOx updraft burner according to claim 5, it is characterised in that: the combustion chamber includes combustion chamber and burning
Room outlet, the outer wall of the combustion chamber are provided with two groups of supporting mechanisms, axis of the two groups of supporting mechanisms each along combustion chamber
Direction setting, the multiple vertical gas injection discharge orifice and multiple inclination gas injection discharge orifices are respectively positioned in combustion chamber.
7. low NOx updraft burner according to claim 6, it is characterised in that: the airflow duct include connection ring and
By flanged joint, the combustor exit and airflow duct outlet are neat for airflow duct outlet, the connection ring and shell
It is flat.
8. low NOx updraft burner according to claim 6, it is characterised in that: the material of the combustion chamber be silicon carbide or
Heat-resisting alloy steel, the shape of the combustion chamber are in cylindrical tube shape, and the bore of the combustor exit is less than the bore of combustion chamber, and two
It include the support protrusion of identical quantity in group supporting mechanism, the quantity of support protrusion is n in every group of supporting mechanism, n >=3,
Support protrusion in every group of supporting mechanism is arranged each along the circumferential direction of combustion chamber.
9. low NOx updraft burner according to claim 7, it is characterised in that: the material of the airflow duct is carbonization
The shape of silicon or heat-resisting alloy steel, the connection ring is annular shape, and the end of the combustor exit is provided with circular port, along
The circumferential direction of circular port is provided with multiple convergence mouths on airflow duct, and the quantity of the convergence mouth is m, m >=2, the convergence
It mouthful is arc-shaped, the radius of the circular port is R, and the radius of the arc-shaped is r, and 0 < r≤R/2.
10. low NOx updraft burner according to claim 5, it is characterised in that: the vertical gas injection discharge orifice and combustion chamber
Axis be vertically arranged, the quantity of the vertical gas injection discharge orifice is greater than 4, the axis of inclination the gas injection discharge orifice and combustion chamber
Angle between line is θ, 0 °≤θ≤60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820564245.0U CN208487614U (en) | 2018-04-19 | 2018-04-19 | A kind of low NOx updraft burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820564245.0U CN208487614U (en) | 2018-04-19 | 2018-04-19 | A kind of low NOx updraft burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208487614U true CN208487614U (en) | 2019-02-12 |
Family
ID=65252516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820564245.0U Active CN208487614U (en) | 2018-04-19 | 2018-04-19 | A kind of low NOx updraft burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208487614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864294A (en) * | 2019-10-31 | 2020-03-06 | 杭州中景科技有限公司 | Asymmetric burner |
| CN115585457A (en) * | 2022-10-20 | 2023-01-10 | 和和能源(北京)有限公司 | Partial premixing combustion rate regulating and controlling direct flame burner |
-
2018
- 2018-04-19 CN CN201820564245.0U patent/CN208487614U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864294A (en) * | 2019-10-31 | 2020-03-06 | 杭州中景科技有限公司 | Asymmetric burner |
| CN115585457A (en) * | 2022-10-20 | 2023-01-10 | 和和能源(北京)有限公司 | Partial premixing combustion rate regulating and controlling direct flame burner |
| CN115585457B (en) * | 2022-10-20 | 2023-06-30 | 和和能源(北京)有限公司 | Partial premixed combustion rate regulation and control straight flame combustor |
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