A kind of high-efficient energy-saving environment friendly preheating type inner flame type combustor
Technical field
The utility model relates to the buner system in large scale business cooking apparatus and thing group of battalion and industrial combustion equipment, especially a kind of high-efficient energy-saving environment friendly preheating type inner flame type combustor.
Technical background
At present buner system in domestic large commercial kitchen fuel gas equipment and thing group of battalion, generally all adopts traditional cast iron ditch wind furnace in burner hearth, to be equipped with high-power blower and carries out the burning that forced-air blast burning or half premix mode fall behind.Be all to utilize combustion gas to be connected by pipeline the burner entering in burner hearth respectively with air, enter burner hearth cavity mode by burner bottom respectively and carry out mixed combustion, reach the brute force burning under high load capacity operating mode.Then this kind of mode cannot solve and overcome the puzzlement difficult problem that the extremely hot high temperature that produces because of burning can rapid burned device head itself absorbs all the time, and the serious burner head that also can force causes producing combustion gas tempering and fire and explosive risks phenomenon because heat transfer temperature is too high.The full cast iron burner of the forced-air blast formula especially tradition being used is again big power consumer, and wherein the discharge numerical value of harmful material in smoke is also higher, thereby atmosphere is produced to the defects such as the harm of severe contamination raises, and combustion noise is very large.More weak point is; Because combustion gas and air are decomposite at burner head fire hole flow export, can produce combustion gas mixes inhomogeneous and burns insufficient with air, make colder air directly in burner hearth and combustion gas mixing, when catch a cold Dilution air due to combustion gas in gaseous mixture collision process, also reduce the temperature of fuel gas buring, so method is the main cause that causes combustion thermal efficiency very low.The thermal efficiency that the current thermal efficiency of traditional air blast range does not also reach the main pinkeye of cooking stove in former GB7824-87 " Chinese Cooking Gas Appliance " standard should be not less than 20% index, because of the emergence of blowing-type " Chinese Cooking Gas Appliance " at that time, the thermic load that has only improved cooking stove reaches the required firepower of culinary art.All do not reach >=20% index of the thermal efficiency of the air blast range (especially ditch wind furnace) that most manufacturing industry are produced, generally in 16~18% left and right, what have is even lower, so be cancelled on the contrary thermal efficiency Interventions Requested in the time of CJ/T28-2003 " Chinese Cooking Gas Appliance " revised standard? government advocates under " energy-saving and emission-reduction " situation now, answer transition of people's conceptions, with technological innovation, energy-saving and cost-reducing policy guidance, efficiency and the safety and environment protection technical standard of again working out the commercial gas kitchen range product that power consumption is larger are imperative.
Traditional air blast ditch wind furnace burning, not only make burner head and burner hearth peripheral temperature be raise simultaneously, make heat energy loss very large, the thermal efficiency is very low, environmental protection index is also poor, in culinary art, be subject to dirt and stop up, more there is no sewer passage and be difficult to the defects such as dismounting and maintenance, reduction of service life simultaneously.Therefore promoting under " energy-saving and emission-reduction " target situation when former government's devote every effort to help, traditional product need be listed among the superseded ranks of backward products.
In existing market, also apply half premix or general full premix combustion mode reaches high load capacity combustion conditions product, also do not reach by analysis complete combustion effect, combustion thermal efficiency is promoted not ideal enough, the more difficult Energy Efficiency Standard of realizing high efficiency peak value, and low emission, low noise, high efficiency the saving energy and reduce the cost and comprehensive index green, safety and environmental protection that can't all solve the rapid intensification of burner head and harmful material in smoke.
Utility model content
The utility model provides business thing group of battalion and a kind of futuramic high-efficient energy-saving environment friendly preheating type inner flame type combustor of industrial combustion, in full premix cyclic preheat mode, strengthen flammable molecule priming reaction combustion mechanism and adopt advanced from purple, blue flame span to infra-red radiation combustion method, grasp air-fuel ratio and rationally control excess air coefficient, improve efficiency of combustion approach, reached the environment protecting of significant energy-saving and cost-reducing target and nuisance minimum discharge and ultralow combustion noise.For solving above-mentioned all problems, by the following technical solutions:
The utility model provides a kind of high-efficient energy-saving environment friendly preheating type inner flame type combustor, air fuel gas mixed cell by lower end provides mixing source of the gas, it is characterized in that, the outside of described burner comprises burner foundry goods shell (4), burner foundry goods base (11), the bottom of described burner foundry goods base (11) arranges by a seedling fire passage and the seedling fire air control valve (12) that is positioned at outer end, described burner bottom, seedling fire control valve (14) is connected, described seedling fire passage, described seedling fire air control valve (12) and described seedling fire control valve (14) have formed a seedling fire feeding mechanism, the inner tip of described burner comprises a spacing ring top cover (3), the seedling ignition combustor (8) that is by main ignition combustor ignition inner ring (5) and bottom that is positioned at described burner central authorities upper end forms a combustion system, and by outer spacer ring (7), middle level spacer ring (6) has formed one with burner foundry goods base (11) and burner foundry goods shell (4) inner chamber and has mixed source of the gas prewarming circulating system, by the igniting of described main ignition combustor ignition inner ring (5) inner chamber lower edge, flame detects pin (9) and forms a control device.
Reasonablely be, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, it is characterized in that, described mixing source of the gas is introduced and is flowed to burner foundry goods base (11) inner chamber from the bottom of described burner, flow out in inner chamber upper end-face edge oval hole by foundry goods base (11), along burner foundry goods shell (4) inner side by bottom to overhead stream to, by connect that outer spacer ring (7) and middle level spacer ring (6) carry out from bottom to top and from top to bottom toward in interlayer circle from periphery to interior loop, the burner ignition inner ring (5) that finally enters center, combustion chamber burns.
Reasonablely be, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, it is characterized in that, described burner foundry goods shell (4) is be made up of some interlayer circles round-shaped, its surface is by forming strip radiating fin for some decile reinforcements, the surperficial fin strip of described burner foundry goods shell (4) plays continuous cooling heat dissipation effect, also make simultaneously described mixing source of the gas in the circulation of interlayer circle progressively burned device get angry the high warm transmission of inner ring (5) and absorb pre-temperature, play the double action of charge heating overheavy firing.
Reasonable, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, is characterized in that, the strip radiating fin of described burner foundry goods case surface be shaped as circle, ellipse, polygon.
Reasonablely be, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, it is characterized in that, described burner ignition inner ring (5), middle level spacer ring (6) and outer spacer ring (7) are all that stainless sheet steel is made, the slotted eye assembling of its top and described spacing ring top cover (3), engage with described burner foundry goods base (11) top circumference slotted eye its lower end, form mix source of the gas folder from skin progressively to the circulation canal internal layer.
Reasonablely be, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, it is characterized in that, described burner ignition inner ring (5) comprises skin and internal layer, its outer support supporting plate for being made by stainless sheet steel punching press, and several many fire holes are set, described internal layer is for getting angry layer, adopt high temperature resistant, anti-oxidation metal fibrous web material to be close to the center, inner side that is fixedly welded on described waste heat reflecting plate (1) and refractory top cover (2), then to press and be welded and fixed with upper and lower side corrosion resistant plate annulus.
Reasonable, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, is characterized in that, described bar hole and described many fire holes be shaped as circle, ellipse, water chestnut hole shape, rectangular hole shape.
Reasonablely be, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, it is characterized in that, described burner ignition inner ring (5) also comprises by cast iron materials entirety processing many fire holes inner ring and forms at its surface spraying fire-resistant oxidation resistant layer.
Reasonablely be, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, it is characterized in that, described burner foundry goods base (11) inner chamber base, between described middle level spacer ring (6) and described burner ignition inner ring (5), interlayer has a mixture combustion device inner chamber pressure tap (13), to measure the numerical value of described mixing source of the gas in the required dynamic pressure with certain mixing source of the gas of burning inner chamber.
Reasonable, high-efficient energy-saving environment friendly preheating type inner flame type combustor of the present utility model, is characterized in that, described burner foundry goods base (11) periphery is provided with two leaking holes.
The utility model provides one to be applicable in large scale business kitchen fuel gas equipment and thing group of battalion and industrial combustion equipment " a kind of high-efficient energy-saving environment friendly preheating type inner flame type combustor ", solve under rational rated heat input, rated heat load combustion conditions, combustion gas and air evenly mix and pass through gradual preheating, break current conventional full premix combustion and mix the inefficient operating mode that directly enters burner hearth from bottom to top and burn textural.This invention is novel utilizes air and combustion gas first fully to mix the rear laterally mechanism of the pre-heat intensified firing of multilayer circulation, from thermodynamic principles analysis; The priming reaction that after pre-temperature, the gaseous mixture of air and combustion gas can enhanced burning molecule, contributes to improve the fuel factor of fuel gas buring.When grasping air-fuel ratio simultaneously and approaching stoichiometric proportion, need rationally to control excess air coefficient, both improved the heat release rate of burning, make scorching hot high-temperature region rest on the time lengthening of burner hearth, suppress so again harmful CO and NO in flue gas
xincrease, reach the environmental protection index of harmful material in smoke minimum discharge, simultaneously again pre-temperature the cold water in slaughterhouse (shoe), can effectively absorb UTILIZATION OF VESIDUAL HEAT IN, make integrated heat efficiency>=50%, improve more than 150% than thermal efficiency index (>=20%) in the national standard of former GB7824-87 " Chinese Cooking Gas Appliance ", improve 100% with thermal efficiency index (>=25%) in firm issue CJ/T28-2003 " Chinese Cooking Gas Appliance " professional standard, the high target contrast (>=35~40%) of more advanced with similar Zhejiang Province and Shanghai City " commercial gas utensil efficiency and environmental protection evaluation " provincial standard, the thermal efficiency has also on average improved more than 30%.The favourable effective heat duty that strengthens burning on project organization, thoroughly solve traditional air blast burner for a long time with the backward situation of high load capacity fallback, therefore novel and high-efficiency energy-conserving and environment-protective preheating type inner flame type combustor is to promote the optimal selection of frying in commercial kitchen in the industrial combustion equipments such as stove, large stove, steam box and big-and-middle-sized gas-heating hot-water boiler, energy-conservation and environment protecting is significantly given prominence to, and is to belong to unprecedented.
Brief description of the drawings
Below, with reference to accompanying drawing, for those skilled in the art, to detailed description of the present utility model, above and other object of the present utility model, feature and advantage will be apparent.
Fig. 1 is high-efficient energy-saving environment friendly preheating type inner flame type combusting device structure schematic diagram of the present utility model;
Fig. 2 is burner top plan view in Fig. 1;
Fig. 3 is burner foundry goods base vertical view;
Fig. 4 is burner foundry goods shell top view;
Fig. 5 is outer spacer ring figure;
Fig. 6 is middle level spacer ring figure;
Fig. 7 is burner ignition inner ring assembly figure;
Fig. 8 is burner ignition (cast iron) interior loop graph;
Fig. 9 is spacing ring top cover cutaway view;
Figure 10 is the dependency structure principle system schematic of the utility model embodiment.
Brief description of the drawings:
1 waste heat radiant panel (fire-resistant oxidation resistant synthesizes metal material), 2 refractory top covers
3 spacing ring top cover 4 burner foundry goods shells
5 burners ignition inner ring 6 middle level spacer rings
7 outer spacer ring 8 seedling ignition combustors
9 igniting, flame detect pin (S2) 10 burner hearth base plates
11 burner foundry goods base 12 seedling fire air control valves
13 burner cavity pressure tap 14 seedling fire control valves
15 gas nozzle 16 centrifugal blowers
17 seedling fire air (air quantity) the supply automatic adjustable plates of 18 secondary air flow (air motor fa2)
19 air-flow plate (manually adjust locking) 20 combustion gas automatic regulating valves (combustion gas motor Ug2) first
21 two the spilling water small openings in burner foundry goods bottom
22 air fuel gas enter four ingates of burner foundry goods wall inner bottom part after mixing
23 burner foundry goods shells and burner hearth base plate pilot hole
Inner ring on 50 burners ignition inner rings 51
52 support supporting plate 53 fire-resistant oxidation resistant metallic fiber net materials
54 times inner ring 61,71 waist circular ports
100 burner unit 200 air, combustion gas mixing unit
300 Automatic Control Unit
Detailed description of the invention
Below in conjunction with accompanying drawing, by non-limiting example, the utility model is described.
In accompanying drawing 1, be the embodiment of a kind of more advanced operation of the utility model, the i.e. structural representation of high-efficient energy-saving environment friendly preheating type inner flame type combustor.
The structure of preheating type inner flame type combustor of the present utility model is mainly divided inside and outside two parts; Its peripheral is made up of with seedling fire control valve 14 etc. the seedling fire air control valve 12 of burner foundry goods shell 4 and burner foundry goods base 11 and lower end, bottom.Inner upper end is assembled by spacing ring top cover 3 (referring to accompanying drawing 9 spacing ring top cover cutaway views) slotted eye, top circumference slotted eye is corresponding engages for lower end and burner foundry goods base 11, form and mix source of the gas circulation canal in interlayer, burner is got angry inner ring 5, middle level spacer ring 6 and outer spacer ring 7 and has been formed the circulatory system of the outer cooling and progressive preheating of internal layer of the mixing source of the gas of full premix.
Burner of the present utility model is in the time of work, air fuel gas mixed cell 200 in Figure 10 by air and combustion gas by the gaseous mixture of air-fuel ratio (GAS+AIR) (seeing that in accompanying drawing 1, arrow flows to mark), introduce and flow to the inner chamber of burner foundry goods base 11 from bottom, flow out (referring to horizontal direction left and right arrow in Fig. 1) air by base intracavity upper end-face edge hole, after combustion gas is mixed, enter four ingates of burner foundry goods wall inner bottom part, be four holes 22 in burner foundry goods base vertical view in Fig. 3, then along burner foundry goods shell 4 inner sides by bottom to overhead stream to, by connecting the outer spacer ring some waist circular ports 71 of 7 top surrounding (seeing accompanying drawing 5) and the some waist circular ports 61 of middle level spacer ring 6 (seeing accompanying drawing 6) top surrounding, from progressively circulating toward middle inner layer ring from skin circle from top to bottom and from bottom to up, the burner that finally enters center, combustion chamber is got angry in inner ring 5 and is burnt.Burner ignition inner ring 5 is that a composite component forms (specifically asking for an interview accompanying drawing 7 burners ignition inner ring assembly figure).
Skin in accompanying drawing 7 is the fire support supporting plate 52 of hole count of corrosion resistant plate punching, internal layer is 53, special high temperature resistant, anti-oxidation metal fibrous web material be welded on support on supporting plate 52 compound, its top by high temperature resistant processing after steel plate punched form upper inner ring 51 and bottom corrosion resistant plate and make lower inner ring 54 and be pressed on respectively to support on the complex that supporting plate 52 and internal layer are 53 and be welded and fixed, formed main ignition combustor.
Accompanying drawing 8 provides the interior loop graph of burner ignition (also can substitute with foundry goods).Wherein to adopt many fire holes of cast iron materials entirety processing inner ring, on its circumference, be designed with evenly densely covered burning area of N-Φ M porous, and in the interior design n layer boss hole shape of H distance, also be another burner ignition inner ring part of the composite members of alternative burner ignition inner ring 5, its surface spraying fire-resistant oxidation resistant technique, can increase the service life.The feature of above-mentioned two kinds of burners ignition inner ring; All have and can take out and change from top separately, be convenient to maintenance and clean maintenance.
Mix source of the gas by the inwall of the surperficial N bar fin of burner foundry goods shell 4, that laminar flow is moving outside at first for mixing source of the gas, burner cast housing has been played to continuous cooling impact and thermolysis (seeing N bar ladder type fin in accompanying drawing 4, burner foundry goods shell top view), simultaneously also make to mix source of the gas outside, also progressively burned device is got angry the scorching hot high temperature of inner ring and is transmitted institute and absorb preheating in the circulation of internal layer spacer ring, plays the double action of mixing source of the gas preheating overheavy firing.
Burner foundry goods shell 4 is connected with burner foundry goods base 11, the bottom at burner center, be seedling ignition combustor 8 with upper end, burner foundry goods base 11 center, seedling fire passage is connected and has formed seedling fire feeding mechanism with seedling fire air control valve 12, the seedling fire control valve 14 of lower end, bottom.
In conjunction with the total system schematic diagram of the present utility model of Figure 10, whole operating process is as follows: this high-efficient energy-saving environment friendly preheating type inner flame type combustor system is mainly by sending enabled instruction by guidance panel to the automatic controller in Automatic Control Unit 300, and automatic controller is sent into burner unit 100 with combustion gas mixing than air, combustion gas mixing unit 200 according to instruction control air and carried out safe operating mode operation.Start to operate the startup power switch E that first contacts guidance panel with hand point
1, E
2must be electric, first start F
1centrifugal blower 16 is carried out after operation in tens of seconds, and automatic controller is just exported S
1signal is to S
2igniting, flame detect pin and just start to carry out D in automatic ignition, magnetic valve
1(Miao Huofa) open combustion gas GAS
1lead to D
1(Miao Huofa), output seedling fire combustion gas gas
1send into gas by pipeline
2pipeline enters seedling fire control valve 14, and adjustable specified seedling fire consumption tolerance, simultaneously to seedling fire air (air quantity) supply 17 output air
1air duct is sent into air
2pipeline enters seedling fire air control valve 12 and seedling fire control valve 14 adjusted in concert, and after mixing in proportion, sends into seedling ignition combustor 8 and wait for ignition.Now igniting, flame detect pin S
1signal is sent to S
2just lighting seedling ignition combustor 8, flame ion conduction locks D in magnetic valve at once
2(main ignition combustor valve) opens combustion gas GAS
2flow to GAS
3enter combustion gas automatic regulating valve 20Ug
2carry out gas quantity adjusting, simultaneously to the automatic adjustable plate 18f of secondary air flow
a2carry out the control running of air capacity ratio adjusted in concert.According to culinary art call for fire, when operation, cook can easily carry out gear to electromagnetic induction slide bar in kitchen range front plate with pin knee and moves, by regulating shelves from MAX → MIN (U
1~U
4) fourth gear fire section, can carry out the adjusting of different load shelves to main fire, it regulates the power situation of change of every grade of load, i.e. the synchronous demonstration screen display (U at guidance panel
1~U
4) numerical value, reach the advantage of the hommization operation that thermic load can regulate in proportion automatically.This automatic controller is to adopt single needle igniting and flame detection technique, realizes the modern advanced level of the automatic safe control of integral combustion system.
When guidance panel sends enabled instruction, F
2centrifugal blower 16 first moved after tens of seconds; automatic controller starts to export high pressure by high-tension transformer and carries out automatic ignition instruction to igniting, ionic flame detector probe 9; seedling ignition combustor 8 is lighted a fire; if seedling fire does not detect flame at the appointed time; automatic controller can cut off rapidly gas source; and sound and light alarm prompting, entering defence program, instruction need be restarted operation.If seedling fire is lighted successfully, automatic controller can wait after flame stabilization, carries out fast self-locking, in 300 Automatic Control Unit, opens the main thermoelectricity magnet valve of combustion gas D
2, make main fiery combustion gas GAS
1pass through GAS
2flow to GAS
3pipeline, enters combustion gas automatic regulating valve 20Ug
2carry out gas quantity adjusting, then flow to air through gas nozzle 15 (according to product export rated heat input, rated heat load and design discharge), combustion gas mixing unit 200, again gaseous mixture GAS+AIR is sent into burner foundry goods base 11 inner chambers of burner unit 100, flow into from base intracavity upper end-face edge hole along burner foundry goods shell 4 bottoms to top (accompanying drawing one, arrow flows to mark), by outer spacer ring 7 upper end porous, flow into the 6 lower end porous circulations of middle level spacer ring, constantly carry out preheating to mixing source of the gas, finally enter burner ignition inner ring 5 first halves and carry out completing combustion under balanced high temperature.
Just, operation first first taps switch key with finger to whole operation sequence cylinder folk prescription on guidance panel, shows that blower fan starts operation in advance, connects down and just automatically proceeds to follow procedure control.Normally in service, the large I of Gas Load is according to culinary art firepower demand, and in guidance panel demonstration, available pin knee is selected arbitrarily high-low power (firepower) configuration at electromagnetic induction slide bar gear simultaneously, can simultaneous display U on biconditional operation panel
1~U
4(fourth gear fire section) advanced technology, reaching can different heat load adjustment and even effect of burning.
The utility model is compared with current conventional art, and its main feature is:
1, have fabricated construction ironcasting burner, burner foundry goods base is provided with sewage discharging hole, is difficult for stopping up, and ironcasting surfaces externally and internally carries out etch-proof special technique processing, plays high temperature resistant, antioxidation, can not produce cast iron and get rusty, sturdy and durable.
2, burner ignition inner ring adopts international advanced metallic fiber combustion technology, and can burn across crossing infra-red radiation from purple, blue flame combustion, and enhanced burning radiant heat density, improves efficiency of combustion greatly.
The principle of 3, mainly air fully being mixed to the pre-heat intensified firing of rear recirculation with combustion gas, improve combustion thermal efficiency, and make full use of high-temperature flue gas waste heat by waste heat radiant panel (fire-resistant oxidation resistant synthesizes metal material 1) generation infra-red radiation, increase the bottom of a pan radiant heat density, then high-temperature flue gas enters slaughterhouse (shoe) passage discharged to burner hearth bottom, make part high-temperature flue gas again by heating that cold water absorbs in slaughterhouse (shoe), effectively reach high burning efficiency, make integrated heat efficiency >=50%.
4, this combustion technology can adapt to the burning of the kinds of gas sources such as artificial coal gas, natural gas, liquefied petroleum gas and biogas, not tempering, not de-fire and the stable and balanced completing combustion without yellow flame.
5, there is ultralow carbon monoxide and nitrogen oxide hazardous emission index (CO and NO
xbelow 0.01%), combustion noise is lower, is controlled at≤60dB in (A), meets environment protection requirement.
6, in the design of burner ignition inner ring, can dismantle separately and change, can be according to different process equipment needs, also can carry out etch-proof special technique with ironcasting materials processing and process alternative burner ignition inner ring assembly, change metal fiber burner ignition inner ring, carry out purple, blue flame combustion clearly, also can reduce manufacturing cost.
7, adopt the Based Intelligent Control monolithic machine advanced technology of autonomous Design, can carry out full automatic working and input combustion gas and air mixing ratio data by follow procedure, synchronous motor can carry out respectively the accurate ratio of air and combustion gas and regulate operation, substitute expensive percentage of import adjuster, make it to reduce costs simple, material benefit, reliable and safety.
Burner is in sum applicable to various combustion apparatus in commercial and industrial combustion field.
All embodiment are only for illustration of the utility model above, but not to restriction of the present utility model, and therefore all technical schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.