CN205746837U - Whole pre-mixed metal fiber burner and use the boiler of this burner - Google Patents

Abstract

This utility model belongs to technical field of combustion equipment, relates to a kind of whole pre-mixed metal fiber burner and uses the boiler of this burner, the whole pre-mixed metal fiber burner that this utility model provides, including blower fan, mixed wind unit and combustion head；Blower fan is connected with mixed wind unit, is used for providing burning required air；Mixed wind unit is connected with combustion head, is used for mixing the air needed for combustion head carries and combustion gas mixing gas；Mixed wind unit includes mixing wind tube and mixed wind dish, circumferentially arranged on the sidewall of mixing wind tube organize through hole more, being disposed with first along gas flow direction to mix wind dish and second and mix wind dish, mixing wind tube is arranged at first and mixes wind dish and second and mix between wind dish, and first mixes wind dish and abut against with mixing wind tube.The burner that this utility model provides makes air and combustion gas be sufficiently mixed, and fully, discharged nitrous oxides is low, energy-efficient, and reduces boiler furnace flue size greatly, makes to be heated evenly inside flue in burning.

Description

Whole pre-mixed metal fiber burner and use the boiler of this burner

Technical field

This utility model relates to technical field of combustion equipment, particularly relates to a kind of whole pre-mixed metal fiber burner and adopts With the boiler of this burner.

Background technology

Along with living standard and the raising to environmental protection consciousness, people increasingly pay attention to burner in combustion The discharge of nitrogen oxides in the discharge of the harmful gas produced, especially gas heater or gas fired-boiler.At present, boiler is controlled Nitrogen discharged is one of the key task of state treatment haze.Revised new " boiler Air Pollutant Emission mark has been issued in Beijing Accurate ", wherein specify, from 1 day July in 2015, newly constructed boiler discharge limits was received sternly to 80 by 150 existing milligrams/cubic metre Milligram/cubic meter；Play newly constructed boiler nitrogen oxides on April 1st, 2017 and receive tight to 30 milligrams/cubic metre further.Seek to control The nitrogen discharged Technology Ways of boiler becomes the focus of the most all common concerns.

On domestic market, controlling the nitrogen discharged major technique taked has two kinds: one to be by installing flue gas recirculation dress additional Put and can control nitrogen discharged at 50-80 milligram/cubic meter, but this technology still can not reach the tightest of 30 milligrams/cubic metre Standard, then have its cost the highest, be not suitable for popularization and application.Two is by smoke evacuation is carried out chemical treatment, reduces nitrogen row Putting, this square law device is complicated, and treatment effect is the most undesirable, and post processing cost is the highest.Thus, both the above mode Not being widely popularized, the effective method controlling emitting nitride should produce nitrogen oxides from burner combustion Source part just carries out technical controlling, i.e. selects suitable burner to control the discharge of nitrogen oxides so that it is control at 30 millis Within gram/cubic metre.

Metal fiber burner is a kind of full pre-mixing blue flame formula burner, using specialty metal fiber as burning surface, combustion Burn intensity and can reach 10000kw/m³, it is the most expanded New combustion technique.Metal fiber burner belongs to Premixed gas surface combustion, is pre-mixed uniform gas-air mixture and flows to burner head, golden in breathability Belong to fabric surface layer to burn so that flameholding is also evenly distributed, the existence of localized hyperthermia can be avoided, reduce nitrogen oxygen The generation of compound.In part metals fiber burner of the prior art, mixed wind unit has a various ways, but its still suffer from due to Combustion gas mix with air uneven, can not effectively regulate air and phenomenon that burning that gas proportion is caused is insufficient.Meanwhile, Do not consider the impact of the impurity such as particulate matter during air inlet so that in combustion process due in air impurity existence and Blocking metallic fiber combustion head, thus affect the service life of combustion head, and affect burning and discharge quality.

Therefore, the most critically regulate and control, ensureing being sufficiently mixed of combustion gas and air, and improve combustion air Quality, makes burning more abundant, thus effectively reduces the discharge of nitrogen oxides, be those skilled in the art's problem demanding prompt solutions.

Utility model content

In view of this, the purpose of this utility model is intended to overcome deficiency of the prior art, it is provided that a kind of fully-premixed gold Belonging to fiber burner and use the boiler of this burner, this burner makes air and combustion gas be sufficiently mixed, and burning is abundant, nitrogen oxygen Compound discharge is low, energy-efficient, and reduces boiler furnace flue size greatly, makes to be heated evenly inside flue.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of whole pre-mixed metal fiber burner, including blower fan, mixed wind unit and combustion head；

Described blower fan is connected with described mixed wind unit, is used for providing burning required air；

Described mixed wind unit is connected with described combustion head, is used for mixing the air needed for described combustion head carries and combustion Oxygen mixture；

Described mixed wind unit includes mixing wind tube and mixed wind dish, and circumferentially arranged on the sidewall of described mixing wind tube have many groups logical Hole, is disposed with first along gas flow direction and mixes wind dish and second and mix wind dish, and described mixing wind tube is arranged at described first and mixes Wind dish and second mixes between wind dish, and described first mixes wind dish and abut against with described mixing wind tube.

Further, described mixing wind tube is cylindrical shape or the cydariform being less than mid diameter for two ends diameter, described many groups Through hole is evenly distributed in the circumference of described mixing wind tube sidewall.

Further, also including that housing, described mixed wind unit are arranged at described enclosure interior, described mixed wind dish is by fixing Connector is connected with described case inside wall, and the internal diameter of described mixed wind dish is suitable with the internal diameter of described mixing wind tube；

Described mixed wind dish includes multiple splitter circumferentially distributed along described mixed wind dish, and described splitter is all obliquely installed.

Further, described combustion head includes that flame zone and blind area, one end of described blind area are connected with described mixed wind unit Connecing, the outer surface of described flame zone is provided with metal fiber felt, and the front end of described flame zone is internally sunk structure.

Further, the front-end cross-sectional view of described flame zone is trapezoidal, triangle or arc.

Further, described flame zone includes the first flame zone, mesozone and the second flame zone the most successively, and The outer surface of described first flame zone and the second flame zone is provided with metal fiber felt.

Further, control unit, detector unit, igniting unit and inlet air filtration unit, wherein, described control are also included Unit is connected with described mixed wind unit, including air-fuel ration control actuator and fuel control valve, is used for controlling to adjust burning required Air and the ratio of combustion gas；

Described detector unit is connected with described combustion head, uses Ultraviolet sensor or infrared sensor, is used for detecting flame Information；

Described igniting unit includes ignition electrode rod and prefiring device, and described ignition electrode rod is arranged at described combustion head Blind area, described prefiring device is arranged on inside the flame zone of described combustion head, including prefiring pipe and Venturi tube, and Described Venturi tube is vertically arranged with described prefiring pipe；

Described inlet air filtration unit includes the air inlet of fore filter and deep bead, described fore filter and described blower fan The dismountable connection of mouth, described deep bead is arranged on the ground.

Further, described fuel control valve uses near-linear ratio adjusting valve, the valve plate opening direction of its valve and gas Direction of flow is vertical, and the open angle of valve changes with valve opening equal proportion.

Further, described blower fan is connected with converter, and described converter is used for regulating rotation speed of fan, and then controls air Flow.

This utility model also provides for a kind of gas fired-boiler, and it includes the fully-premixed metal described in above-mentioned utility model content Fiber burner, and absorb and transmit the heat exchanger of heat produced by described burner.

Compared with prior art, the beneficial effects of the utility model are:

1, the mixed wind unit that this utility model provides, by coordinating of mixing wind tube and mixed wind dish, and at mixing wind tube sidewall Circumferencial direction on arrange and organize through hole more so that gas evenly spreads to all through holes, air is effectively ensured and combustion gas mixing is equal Even so that burning is fully；Under 3% oxygen concentration criterion calculation, nitrogen discharged can reach below 30 milligrams/cubic metre, be far below The boiler emission standard-required of national regulation, is the preferable selection of combustion field energy-saving and emission-reduction.

2, the igniting unit that this utility model provides includes ignition electrode rod and prefiring device, prefiring device band angle Install, it is ensured that ignition electrode rod is in outside flame zone, and then ensure that the reliability of igniting；This utility model is by using Converter realizes the accurate control to required combustion air amount, with the use of air-fuel ration control actuator and fuel control valve, and can To realize air, the accurate control of gas ratio.

3, this utility model is provided with inlet air filtration unit and includes fore filter and ground deep bead, effectively prevents blower fan Suck air from ground, improve combustion air quality, it is to avoid the various blockings occurred during metallic fiber combustion head surface combustion are asked Topic, can effectively improve burning and discharge quality, and disassembling, assembling and replacing is convenient, greatly reduces maintenance cost.

4, the whole pre-mixed metal fiber burner that this utility model provides, it can be ensured that combustion gas and air are sufficiently mixed, combustion Burning fully, discharged nitrous oxides is low；Flameholding simultaneously, the thermal efficiency is high, is difficult to tempering, and energy-efficient, combustion noise is little, operation Safety.

5, the gas fired-boiler of the employing said burner that this utility model provides, reduces the flue chi of boiler greatly Very little, it is heated evenly inside flue；Boiler volume is little, thus reduces floor space, saves equipment installation and operation space；At energy Today that source is in short supply, under national energy-saving reduces discharging the guidance of policy, succeeding in developing of this combustion system will bring significant warp Ji benefit.

For making above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and Coordinate appended accompanying drawing, be described in detail below.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model detailed description of the invention or technical scheme of the prior art, below by right In detailed description of the invention or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below In accompanying drawing be embodiments more of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

The whole pre-mixed metal fiber burner perspective view that Fig. 1 provides for this utility model；

Fig. 2 is the schematic front view of Fig. 1；

The mixed wind cellular construction schematic diagram that Fig. 3 provides for this utility model；

The combustion head structural representation that Fig. 4 provides for this utility model；

The another kind of combustion head structural representation that Fig. 5 provides for this utility model；

The igniting unit structural representation that Fig. 6 provides for this utility model.

Reference:

100-blower fan；

200-mixes wind unit；201-mixing wind tube；202-through hole；

203-first mixes wind dish；204-second mixes wind dish；205-fixes connector；

206-splitter；

300-combustion head；301-flame zone；302-blind area；

303-metal fiber felt；304-sunk structure；305-the first flame zone；

306-mesozone；307-the second flame zone；

400-control unit；

500-igniting unit；501-ignition electrode rod；502-prefiring pipe；

503-Venturi tube；

600-inlet air filtration unit；700-safety interlock；800-flame；

900-housing.

Detailed description of the invention

For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality Accompanying drawing in type embodiment, is clearly and completely described the technical scheme in this utility model embodiment, it is clear that described Embodiment be only a part of embodiment of this utility model rather than whole embodiments.Generally described in the accompanying drawing herein Can arrange and design with various different configurations with the assembly of this utility model embodiment illustrated.Therefore, below to The detailed description of the embodiment of the present utility model provided in accompanying drawing is not intended to limit claimed model of the present utility model Enclose, but be merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, those skilled in the art exist The every other embodiment obtained on the premise of not making creative work, broadly falls into the scope of this utility model protection.

In description of the present utility model, " " center ", " on ", D score, "left", "right", " perpendicular it should be noted that term Directly ", " level ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, be only Must have specific for the ease of describing this utility model and simplification description rather than instruction or the device of hint indication or element Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.

In description of the present utility model, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " peace Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Language concrete meaning in this utility model.

Gas heater and gas fired-boiler are all with fuel gas as fuel, such as natural gas, town gas, liquefied gas, natural pond Gas etc., carry out heat hot water to meet water for industrial use, user's domestic water and/or the need of central-heating by burning combustible gas Ask.This utility model all will be done further details of theory as a example by gas fired-boiler by example below and detailed description of the invention Bright, but this utility model is similarly applied to gas heater.

Embodiment

The whole pre-mixed metal fiber burner perspective view that Fig. 1 provides for this utility model, Fig. 2 is Fig. 1's Schematic front view, the mixed wind cellular construction schematic diagram that Fig. 3 provides for this utility model, as shown in Figure 1 to Figure 3, the present embodiment carries For a kind of whole pre-mixed metal fiber burner, including blower fan 100, mixed wind unit 200 and combustion head 300；Blower fan 100 and mixed wind Unit 200 connects, and is used for providing burning required air；Mixed wind unit 200 is connected with combustion head 300, for mixing and to burning Air needed for 300 conveyings and combustion gas mixing gas；Mixed wind unit 200 includes mixing wind tube 201 and mixed wind dish, mixing wind tube 201 Sidewall on circumferentially arranged have many group through holes 202, be disposed with first along gas flow direction and mix wind dish 203 and second and mix Wind dish 204, mixing wind tube 201 is arranged at first and mixes wind dish 203 and second and mix between wind dish 204, and first mixes wind dish 203 with mixed Airduct 201 abuts against.

The whole pre-mixed metal fiber burner that the present embodiment provides, it is possible to supporting boiler uses, and uses this burner Boiler can reduce the flue size of boiler, and is heated evenly inside flue, saves fuel, cost-effective.The present embodiment leads to Cross mixing wind tube 201 and the cooperation of mixed wind dish so that gas enters from the center of mixing wind tube 201, and evenly spreads to all through holes 202, then the cooperation by mixed wind dish, flow through a bit of diffusion space, and mixed gas diffuses to combustion head 300, at metallic fiber Burn in surface.The structure design of the mixed wind unit 200 of the present embodiment strengthens the mixing of combustion gas and air so that air with Combustion gas is sufficiently mixed according to pre-set ratio, is more sufficiently mixed burning velocity the fastest, and the burning extent of needs is also got over Short, thermal power is more evenly distributed.Meanwhile, the present embodiment provides mixing wind tube 201 and mixed wind dish are provided with plurality of specifications, mixing wind tube 201 and the big I of mixed wind dish adapt with gas fuel flow rate, for different fuel energy values, optional install and its phase Adapting to the mixing wind tube 201 of specification and mixed wind dish, so that combustion gas and air reach optimal mixed effect, burning is more abundant, effectively Reduce the discharge of nitrogen oxides, and save the device space, cost-effective, strong adaptability.

In the alternative of the present embodiment, mixing wind tube 201 is cylindrical shape or the drum being less than mid diameter for two ends diameter Shape, many group through holes 202 are evenly distributed in the circumference of mixing wind tube 201 sidewall.

In the alternative of the present embodiment, above-mentioned whole pre-mixed metal fiber burner also includes housing 900, mixed wind unit 200 are arranged at housing 900 inside, and mixed wind dish is connected with housing 900 medial wall by fixing connector 205, mixes the interior of wind dish Footpath is suitable with the internal diameter of mixing wind tube 201；Mixed wind dish includes that the circumferentially distributed splitter of wind dish 206, splitter 206 are mixed in multiple edge All it is obliquely installed.

The mixing wind tube 201 that the present embodiment provides can have various shape, and it can be common cylindrical shape, above it uniformly Distribution many groups through hole 202, it is also possible to for special hole drum type, the i.e. diameter at its two ends less than middle diameter, the ring of this structure Shape runner and through hole, can strengthen the mixing of air and combustion gas, it is ensured that air and combustion gas mixing are uniform further.Additionally, this reality The mixed point dish that executing example provides is provided with multiple splitter 206 being obliquely installed, and can also arrange enhancing flow perturbation in the radial direction thereof Shielding plate, and then make mixed gas form eddy flow, the surface of uniform distribution to metallic fiber combustion head 300.The present embodiment In the internal diameter of mixed wind dish suitable with the internal diameter of mixing wind tube 201, especially first mixes the internal diameter of wind dish 203 and mixing wind tube 201 Internal diameter is suitable so that gas can enter from the center of mixing wind tube 201, and then is dispersed to each through hole 202 uniformly.

In the alternative of the present embodiment, combustion head 300 includes flame zone 301 and blind area 302, one end of blind area 302 with Mixed wind unit 200 is connected, and the outer surface of flame zone 301 is provided with metal fiber felt 303, and the front end of flame zone 301 be to Inner recess structure 304.

Further, the front-end cross-sectional view of flame zone 301 is trapezoidal, triangle or arc.The present embodiment Flame district 301 Front-end cross-sectional view be trapezoidal.

The combustion head structural representation that Fig. 4 provides for this utility model, as shown in Figure 4, the combustion head of the present embodiment uses Special structure design, i.e. the most internally sunk structure 304, the front end of flame zone 301, the fire when burning can be made Flame 800 is distributed in combustion head 300 front end, i.e. realizes endogenous fire formula combustion system, to adapt to boiler for the different demand of temperature, combustion Burn more stable.Compared to prior art being mostly flame 800 is distributed in outside combustion head 300, the combustion system of i.e. outer fire formula, The combustion head 300 that the present embodiment provides is possible not only to realize above-mentioned endogenous fire formula combustion system, it is also possible to realize inside and outside fire simultaneously The mode of burning, i.e. flame 800 is distributed in outside combustion head 300 and front end simultaneously.By adjusting the size of gas quantity, can realize Endogenous fire formula or the combustion system of inside and outside fire formula, so that flame distribution is uniform, it is to avoid the existence of localized hyperthermia, and then inhibit The generation of nitrogen oxides.

The another kind of combustion head structural representation that Fig. 5 provides for this utility model, as it is shown in figure 5, what the present embodiment provided Flame zone 301 includes the first flame zone 305, mesozone 306 and the second flame zone 307, and the first flame the most successively The outer surface of district 305 and the second flame zone 307 is provided with metal fiber felt 303.This structure can realize double fuel combustion system, I.e. can burn at the first flame zone 305 and the second flame zone 307 respectively by two kinds of different fuels, it is also possible to individually exist simultaneously First flame zone 305 or the second flame zone 307 burn a kind of fuel, have adaptability flexibly, and two flame zones can divide Do not configure matched flame detection unit and fuel, air control unit, it is ensured that efficiency of combustion and effect, operation peace Entirely, conveniently.

In the alternative of the present embodiment, above-mentioned whole pre-mixed metal fiber burner also includes control unit 400, detection Unit (not shown), igniting unit 500 and inlet air filtration unit 600, wherein, control unit 400 and mixed wind unit 200 phase Even, including air-fuel ration control actuator and fuel control valve, for controlling to adjust burning required air and the ratio of combustion gas；Detection Unit is connected with combustion head 300, uses Ultraviolet sensor or infrared sensor, is used for detecting flame information；Igniting unit 500 wraps Including ignition electrode rod 501 and prefiring device, ignition electrode rod 501 is arranged at the blind area 302 of combustion head 300, prefiring device The flame zone 301 being arranged on combustion head 300 is internal, including prefiring pipe 502 and Venturi tube 503, and Venturi tube 503 with Prefiring pipe 502 is vertically arranged；Inlet air filtration unit 600 includes fore filter and deep bead, fore filter and blower fan 100 The dismountable connection of air inlet, deep bead arrange on the ground.

Further, fuel control valve uses near-linear ratio adjusting valve, the valve plate opening direction of its valve and gas stream To vertically, and the open angle of valve changes with valve opening equal proportion.

Further, blower fan 100 is connected with converter, and converter is used for regulating blower fan 100 rotating speed, and then controls air stream Amount.

The igniting unit structural representation that Fig. 6 provides for this utility model, as shown in Figure 6, the igniting that the present embodiment provides Unit 500 includes ignition electrode rod 501 and prefiring device, and its prefiring device uses V-type venturi type prefiring device, and And V-type venturi type prefiring device can band angle install, say, that prefiring pipe 502 is through blind area 302 and metallic fiber The junction of felt 303, and turn round certain angle and be connected with metal fiber felt 303 back side of flame zone 301, described angle can be Between 150 °～170 °, preferably 168 °.This structure makes the prefiring flame flame zone 301 towards combustion head 300, makes prefiring Combustion gas is passed through the blind area 302 at ignition electrode rod 501 place after minute angle and leads to the front end of combustion head 300.When pre-point Fire extinguishes and after main flame ignition, the region outside ignition electrode rod 501 can be kept to be in flame zone, thus extends ignitor The service life of rod 501, and improve the reliability of igniting.

The present embodiment uses blower fan 100 to be connected with converter, realizes the essence to required combustion air flow by converter Really controlling, except providing accurate Combustion System, converter also provides energy to fan electromotor, owing to only need to provide specified merit Rate can meet combustion needs, can be substantially reduced operating cost, saves the energy.Meanwhile, in conjunction with the air-fuel ratio in control unit 400 Control and regulation device and fuel control valve, can realize the accurate control to air fuel gas ratio, so that the air capacity that blower fan 100 provides Reach accurate proportioning with gas supply amount, and then make boiler reach optimal efficiency of combustion, reduce nitrogen discharged.Furthermore, it is possible to adopt Fuel supply, gas is carried out with an air-fuel ratio controller and a gas regulator with air fuel gas rate control function Valve regulation and the regulation of blower fan, it would however also be possible to employ positioned parallel controller regulates while carrying out air capacity and gas quantity, and Use rotation port fuel control valve to be adjusted further, reach the purpose that air fuel gas ratio is accurately controlled.

What deserves to be explained is, in order to improve burning quality further, improving the safety of operation, this utility model is additionally provided with The safety interlock 700 being connected with control unit 400, this safety interlock 700 is opened with pressure difference switch and non-return air door Breakdown closes, and non-return air door is used in cold air suction to burner preventing under stopped status, and fills at each safety interlocking The start cycle put carries out air valve sealing test, it is ensured that equipment is properly functioning, operates safety.

The present embodiment also provides for a kind of gas fired-boiler, and it includes above-mentioned whole pre-mixed metal fiber burner, and inhales Receive and transmit the heat exchanger of heat produced by burner.

Last it is noted that embodiment described above, detailed description of the invention the most of the present utility model, in order to illustrate this The technical scheme of utility model, is not intended to limit, and protection domain of the present utility model is not limited thereto, although with reference to aforementioned This utility model has been described in detail by embodiment, it will be understood by those within the art that: any be familiar with this skill The technical staff in art field is in the technical scope that this utility model discloses, and it still can be to the skill described in previous embodiment Art scheme is modified and maybe can be readily occurred in change, or wherein portion of techniques feature is carried out equivalent；And these amendments, Change or replacement, do not make the essence of appropriate technical solution depart from spirit and the model of this utility model embodiment technical scheme Enclose.All should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with described right The protection domain asked is as the criterion.

Claims (10)

1. a whole pre-mixed metal fiber burner, it is characterised in that include blower fan, mixed wind unit and combustion head；

Described blower fan is connected with described mixed wind unit, is used for providing burning required air；

Described mixed wind unit is connected with described combustion head, is used for mixing the air needed for described combustion head carries and combustion gas mixes Close gas；

Described mixed wind unit includes mixing wind tube and mixed wind dish, circumferentially arranged through hole of organizing, edge on the sidewall of described mixing wind tube more Gas flow direction is disposed with first and mixes wind dish and second and mix wind dish, described mixing wind tube be arranged at described first mix wind dish and Second mixes between wind dish, and described first mixes wind dish and abut against with described mixing wind tube.

Whole pre-mixed metal fiber burner the most according to claim 1, it is characterised in that described mixing wind tube is cylindrical shape Or be less than the cydariform of mid diameter for two ends diameter, described many group through holes are evenly distributed in the circumference of described mixing wind tube sidewall On.

Whole pre-mixed metal fiber burner the most according to claim 2, it is characterised in that also include housing, described mixed Wind unit is arranged at described enclosure interior, and described mixed wind dish is connected with described case inside wall by fixing connector, described The internal diameter of mixed wind dish is suitable with the internal diameter of described mixing wind tube；

Described mixed wind dish includes multiple splitter circumferentially distributed along described mixed wind dish, and described splitter is all obliquely installed.

Whole pre-mixed metal fiber burner the most according to claim 1, it is characterised in that described combustion head includes flame District and blind area, one end of described blind area is connected with described mixed wind unit, and the outer surface of described flame zone is provided with metal fiber felt, And the front end of described flame zone is internally sunk structure.

Whole pre-mixed metal fiber burner the most according to claim 4, it is characterised in that the front end of described flame zone is horizontal Cross section is trapezoidal, triangle or arc.

Whole pre-mixed metal fiber burner the most according to claim 5, it is characterised in that described flame zone is from front to back Include the first flame zone, mesozone and the second flame zone successively, and described first flame zone and the outer surface of the second flame zone It is provided with metal fiber felt.

Whole pre-mixed metal fiber burner the most according to claim 4, it is characterised in that also include control unit, inspection Surveying unit, igniting unit and inlet air filtration unit, wherein, described control unit is connected, including air-fuel ratio with described mixed wind unit Control and regulation device and fuel control valve, for controlling to adjust burning required air and the ratio of combustion gas；

Described detector unit is connected with described combustion head, uses Ultraviolet sensor or infrared sensor, is used for detecting flame information；

Described igniting unit includes ignition electrode rod and prefiring device, and described ignition electrode rod is arranged at the blind of described combustion head District, described prefiring device is arranged on inside the flame zone of described combustion head, including prefiring pipe and Venturi tube and described Venturi tube is vertically arranged with described prefiring pipe；

Described inlet air filtration unit includes that the air inlet of fore filter and deep bead, described fore filter and described blower fan can The connection of dismounting, described deep bead is arranged on the ground.

Whole pre-mixed metal fiber burner the most according to claim 7, it is characterised in that described fuel control valve uses Near-linear ratio adjusting valve, the valve plate opening direction of its valve is vertical with gas flow, and the open angle of valve and valve Opening equal proportion changes.

Whole pre-mixed metal fiber burner the most according to claim 8, it is characterised in that described blower fan and converter phase Even, described converter is used for regulating rotation speed of fan, and then controls air mass flow.

10. a gas fired-boiler, it is characterised in that include the whole pre-mixed metal fiber as described in any one of claim 1～9 Burner, and absorb and transmit the heat exchanger of heat produced by described burner.