CN104930508A - Reverse gas infrared radiation device and reverse gas radiation method - Google Patents
Reverse gas infrared radiation device and reverse gas radiation method Download PDFInfo
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- CN104930508A CN104930508A CN201410310883.6A CN201410310883A CN104930508A CN 104930508 A CN104930508 A CN 104930508A CN 201410310883 A CN201410310883 A CN 201410310883A CN 104930508 A CN104930508 A CN 104930508A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
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Abstract
The invention discloses a reverse gas infrared radiation device and a reverse gas radiation method. The reverse gas infrared radiation device comprises a box body and a radiation generator, wherein an ejection tube and a combustion part of the radiation generator are arranged in an atmospheric pressure chamber of the box body; the atmospheric pressure chamber is communicated with a high pressure chamber; air pressure in the high pressure chamber is higher than atmospheric pressure. According to the reverse gas infrared radiation device disclosed by the invention, low-power reverse combustion is realized; through the design of the semi-closed atmospheric pressure chamber, the cooling effect on the air led into the high pressure chamber is greatly optimized.
Description
Technical field
The present invention relates to industry heating, dry field, relate in particular to and be applied to a kind of industry heating, the reverse gas infrared radiation device in dry processing and a kind of reverse gas-fired radiation method.
Background technology
Utilize infrared ray to the fuel factor principle of large molecule water body resonance cracking, carrying out evaporate to dryness processing with infrared radiation for material, is the common technology in current industry heating field.It is low that this technology relative atmospheric convective drying has energy consumption, the advantage that dry mass is good.
In practice, the production method of infrared radiation is mainly divided into: the radiation of electric ceramic plate and electric heating infrared fluorescent tube two kinds of modes.Both all adopt electric energy conversion to be heat-energy secondary HEATING INFRARED radiation carrier.Energy causes more energy consumption through multiple conversions.Obviously, more economical with the radiation of combustion gas mode Heat of Formation.
In prior art, gas-fired infrared radiation generator mainly comprises: infrared emitter from bottom to top the forward radiant burner of radiation material and infrared ray by radiation source from left and right sides to the antenna with side radiation direction burner of radiation material.And rarely have the reverse Gas-fired Radiator in Municipal of radiation source from top to bottom radiation material.In practice, what usually lain low by material to be processed is placed on processing conveyer belt, dries with the heating that load mode accepts radiant burner by heating work region.
Concerning the forward gas-fired infrared radiator of infrared ray autoradiolysis source radiation material from bottom to top: intercept between radiation source and material to be processed and have conveyer belt, conveyer belt bears ultrared direct radiation, material to be processed bears radiation indirectly across conveyer belt, cannot realize the direct radiation of infrared ray, heat drying efficiency is on the low side; And concerning infrared ray autoradiolysis source by side lateral radiation material gas-fired infrared radiator: material is away from radiation source, and heat drying effect is undesirable.
The reverse Gas-fired Radiator in Municipal of radiation source from top to bottom radiation material can solve above-mentioned two technological deficiencies.Design reverse Gas-fired Radiator in Municipal and need solution two technical problems: 1. reverse combustion will cause pre-mixing gas combustion to pour into above burner plate, how to control the input speed of pre-mixing gas combustion and the balance of burning velocity; 2. how to suppress heat upwards to conduct, the temperature controlling gas-fired infrared radiator prevents pre-mixing gas combustion from lighting inside radiator and exploding.
The reverse infrared radiator of prior art adopts mechanical air inlet mode, constantly blasts air stream from top to bottom with high power air blowers, and air stream drives combustion gas to burn at combustion front, with flame heating of metal net, makes wire netting launch infrared waves.The air stream that high power air blowers blasts from the metallic walls of internal cooling infrared radiator, prevents tube wall temperature from spending height and lights pre-mixing gas combustion while bearing combustion-supporting immixture.For ensureing cooling effect, the air stream blasted must possess suitable flow velocity.
There is negative interaction as described below in this technical scheme: 1. the speed of air-flow input is much larger than the speed of burning, and excess air is many, incomplete combustion, and heat utilization rate is low; 2. burner rating remains high, and to needing, the material of low-temperature heat drying is inapplicable.3. infrared emitter is by the wire netting heated, and causes infra-red radiation uneven.
Therefore, be necessary to design a kind of reverse gas infrared radiation device, reduce burning velocity, be applicable to the material of low-temperature heat drying, reach effects of energy saving and emission reduction.
In addition, because reverse gas infrared radiation device adopts the reverse combustion gas mode of from top to bottom air feed, dust granules in air is inevitable enters Gas-fired radiator inside with combustion air, after long-time use, dust may be piled up and stop up Gas-fired radiator pipeline, thus affect the input speed of pre-mixing gas combustion, once the input speed of pre-mixing gas combustion is less than burning velocity, tempering phenomenon will be caused to cause blast.
Therefore, the purification of incident air must be taken into account in the new technology improved, the service life of extension device.
Summary of the invention
The invention provides reverse gas infrared radiation device and reverse gas-fired radiation method, solve the problem.
The concrete technical scheme that the present invention adopts is:
A kind of reverse gas infrared radiation device, comprise casing and radiation generator, described casing is installed on outside described radiation generator, described radiation generator includes loophole, induction tunnel and combustion section, described entrance port connects peripheral hardware gas feeder, injects combustion gas, import air in combustion gas injection mode with small-power gas nozzle; Air and combustion gas form pre-mixing gas combustion in induction tunnel, burn in described combustion section;
It is characterized in that: described casing comprises atmospheric pressure storehouse and high-pressure chamber, described high-pressure chamber connects air-blast device and blasts cooling air, and the storehouse internal gas pressure of described high-pressure chamber is greater than atmospheric pressure, and described high-pressure chamber connects described atmospheric pressure storehouse by aperture; Bottom opening and the extraneous air in described atmospheric pressure storehouse are linked up, and make storehouse, described atmospheric pressure storehouse internal gas pressure equal atmospheric pressure, and the radiation that described combustion section produces is penetrated by bottom atmospheric pressure storehouse; Described induction tunnel, described hot spots is in described atmospheric pressure storehouse.
As follows by the effect adopting above-mentioned technological means to obtain:
Air is imported in combustion gas injection mode in entrance port, limit the input speed of pre-mixing gas combustion, reduce the burning velocity of combustion section, control the temperature of radiation generator metallic walls in the air-blast cooled mode in outside, prevent tube wall temperature from spending height and cause lighting pre-mixing gas combustion and blast; Achieve the small-power reverse combustion of radiation generator.
High-pressure chamber storehouse internal gas pressure is greater than the storehouse internal gas pressure in atmospheric pressure storehouse, therefore air flows into atmospheric pressure storehouse by aperture in high-pressure chamber storehouse, because in atmospheric pressure storehouse, radiation generator carries out combustion reaction, in atmospheric pressure storehouse, temperature is higher than high-pressure chamber temperature, therefore high-pressure chamber imports the actual formation of air to radiator induction tunnel, the cooling air of the metal shell of diffusion storehouse and combustion section, realizes the control of the temperature to radiation generator metallic walls, and is derived by atmospheric pressure storehouse bottom opening.If when radiation generator being placed on open space must simultaneously in multiple directions to induction tunnel and the air blast of combustion section metal shell.And the semiclosed cabin body design in atmospheric pressure storehouse, the cooling effect making high-pressure chamber import air is significantly optimized.
Further improvement is: described radiation generator includes loophole, induction tunnel and combustion section; Described entrance port comprises combustion gas inlet and air inflow aperture, and described combustion gas inlet is provided with small-power gas nozzle and connects outer combustion gas feedway, and combustion gas is spurted within described entrance port by described small-power gas nozzle from described combustion gas inlet; Described induction tunnel connects described entrance port, the air that described entrance port imports and combustion gas form pre-mixing gas combustion in described induction tunnel, described induction tunnel connects described combustion section, described combustion section is provided with igniter, pre-mixing gas combustion imports described combustion section by described induction tunnel, lighted by described igniter, burn in described combustion section, produce infrared radiation to immediately below described combustion section; Described induction tunnel, combustion section outer wall is undertaken continuing cooling by blasting cooling air, and also comprise heat build-up baffle plate, described heat build-up baffle plate is located at edge under described combustion section.
By adopting technique scheme: small-power gas nozzle sprays combustion gas and enters induction tunnel from combustion gas inlet, combustion gas is clashed into induction tunnel inside pipe wall and is formed gamma angle, negative pressuren zone is formed by air slide effect, thus, negative pressure drainage effect is formed to edge, entrance port air, form injection air stream, induction tunnel is imported from entrance port air inflow aperture, belong to the air inlet mode of combustion gas injection but not the mechanical air inlet mode of air blast drive combustion gas air intake, the speed that air-flow blasts is far smaller than the air-flow input speed that the air blast of prior art machinery produces, reduce burning velocity, solve the problem of incomplete combustion.Simultaneously, the actual formation of the incident air stream of high-pressure chamber to atmospheric pressure storehouse is to induction tunnel, the lasting cooling air of combustion section and Department of Radiation shell, suppress combustion section heat upwards to conduct the gas-fired infrared radiator internal temperature caused too high, stopped gas-fired infrared radiator tube wall temperature and spent height and light pre-mixing gas combustion and the hidden danger of blasting.Along being provided with heat build-up baffle plate under combustion section, directly at radiation generator metal shell edge, burning causes metal-back temperature too high to prevent imperfect combustion air mixture.Thus guarantee the small-power reverse combustion realizing radiation generator.
Further improvement is: described casing is the rounded cylinder in cross section, and described atmospheric pressure position in storehouse is in casing centre position, and described high-pressure chamber is distributed in both sides, described atmospheric pressure storehouse.
In this way: the shape of casing farthest can bear pressure, optimizes the structure of casing, casing more firm and durable is made.
Further improve and be: described casing is installed on outside the radiation generator of multiple parallel placement.
In this way: the burning radiation linkage work making multiple radiation generator, form an overall large radiation face, extensively adapt to different materials.
Further improve and be: described casing also comprises middle pressure storehouse, the entrance port of described radiation generator is in described middle pressure storehouse, described middle pressure storehouse is connected with described high-pressure chamber by air port, high-pressure chamber connects air-blast device and blasts cooling air, described air-blast device port is provided with purifier purification drum as entered the dust in cooling air, the storehouse internal gas pressure in described middle pressure storehouse is greater than atmospheric pressure, and described middle pressure storehouse and described atmospheric pressure storehouse do not exist gas exchanges.
By adopting technique scheme: the entrance port of radiation generator is in middle pressure storehouse, and radiation generator remaining part is in atmospheric pressure storehouse, and middle pressure storehouse and described atmospheric pressure storehouse do not exist gas exchanges.Thus, with combustion gas mixing be the air of pre-mixing gas combustion in middle pressure storehouse, the air blast cooling air of cooling combustion portion metal outer wall is in atmospheric pressure storehouse.The thorough shunting of cooling air and combustion air, solving cooling air in prior art, for ensureing that radiation generator cooling must maintain high-power output, is realize the small-power reverse combustion contradiction that then pre-mixing gas combustion input speed can not be too fast.
Middle pressure storehouse connects high-pressure chamber by air port, and high-pressure chamber connects air-blast device and blasts cooling air, and described air-blast device port is provided with purifier purification drum as entered the dust in cooling air.Thus, ensure that imported by high-pressure chamber in press in the air stream in storehouse and substantially there is no dust; Connect the entrance port of peripheral hardware gas feeder in middle pressure storehouse, therefore in, the junction of pressure storehouse and peripheral hardware gas feeder certainly exists tiny gap, because storehouse, middle pressure storehouse internal gas pressure is greater than atmospheric pressure, the dust that ensure that in extraneous air therefrom can not be pressed in the fine gap of storehouse and peripheral hardware gas feeder junction and entered middle pressure storehouse and enter radiation generator inside from entrance port thus.Thus substantially there is no dust in ensure that the pre-mixing gas combustion that radiation generator inputs on the whole.Tempering can not be caused because of the dust accumulation in combustion-supporting air flow in radiation generator inside after ensureing radiation generator Long-Time Service.
Further improve and be: the air port that described middle pressure storehouse is connected with described high-pressure chamber comprises shield, stretching by adjustment shield changes the size in described air port.
By adopting in this way: the storehouse internal gas pressure value in storehouse can be pressed in regulating by pressing in adjustment traffic channel size trace between storehouse and high-pressure chamber.The technique effect done like this enables reverse gas-fired radiation device adapt to different atmospheric pressure environment to carry out work, in low altitude area, atmospheric pressure is higher, presses the air port passage between storehouse and high-pressure chamber in expansion, presses the storehouse internal gas pressure in storehouse to make storehouse, middle pressure storehouse internal gas pressure higher than atmospheric pressure in lifting.
And in high altitude localities, atmospheric pressure is lower, reduce the air port passage between pressure storehouse and high-pressure chamber, the storehouse internal gas pressure in storehouse is pressed in suitable reduction, the draught head in storehouse and atmospheric pressure storehouse is pressed in maintenance, avoid middle pressure storehouse pressure relative atmospheric press through large and cause pre-mixing gas combustion to input speed to compare burning velocity excessive, cause the effect of incomplete combustion.
Further improvement is: described radiation generator combustion section outer wall is provided with cooling bath, described cooling bath upper end is provided with air intake vent, described cooling bath lower end is provided with air-vent, described air intake vent blasts cooling blast by blower fan, cooling blast is discharged from cooling bath by described air-vent, described air-vent, towards ground, has an oblique angle in the vertical direction.
In this way: the air stream that cooling bath air-vent flows out is ejected on radiation area material with oblique angle, form negative pressure drainage district at radiation area edge, guide the steam on the waste gas after burning and material surface to the sucking-off of negative pressuren zone direction by negative pressure drainage effect; Meanwhile, because adopt the mode of negative pressure drainage to dispel burnt gas and the steam of radiation area, evade traditional blowing drainage way to radiation area to the destruction of radiation area high temperature dry-bulb temperature field, radiation efficiency is maximized.
Further improvement is: the incident pipe of described radiation generator comprises fin, and the rounded tab projection in described fin outer, described fin is evenly distributed on incident pipe outer wall.
By adopting in this way: the contact area increasing the cooling air that induction tunnel and air blast are blown into, enhances the cooling effect on induction tunnel surface, keeping the temperature stabilization of induction tunnel, safeguarding Gas-fired Radiator in Municipal work safety.
Further improvement is: described radiation generator injection portion comprises mixing unit and diffusion part from top to bottom, described mixing unit is vertical hollow cylinder, described diffusion part is vertical conical hollow cylinder, in the vertical direction and have the oblique angle that leans outward of 8 ° between mixing unit.
By adopting in this way: the sectional area of diffusion part is more progressively to expand, and combustion-supporting air flow and combustion gas realize mixing compression in described mixing unit and form premixed gas, and carry out first time diffusion at diffusion part.
Further improvement is: described radiation generator also comprises diffusion storehouse, and described diffusion bin location is between described induction tunnel and described combustion section, and described diffusion storehouse outer wall is blown into cooling air by blower fan and continues cooling.Described diffusion storehouse comprises flow distribution plate, and described flow distribution plate is provided with tap hole, and described tap hole longitudinally runs through described flow distribution plate, and described flow distribution plate is the hemispherical that intermediate projections edge is flat.
By adopting in this way: induction tunnel imports pre-mixing gas combustion carries out second time diffusion in diffusion storehouse, third time diffusion is carried out in flow distribution plate, the well-mixed combustion gas of induction tunnel end and air is made to be evenly distributed in combustion section, to overcome because of combustion gas with combustion-supporting air flow because proportion is different, enter diffusion storehouse from induction tunnel suddenly to spread two kinds of produced gases and again shunt, the technical problem of density unevenness, make burning on each position of combustion section average, ensure that the amount of radiation of each position of Department of Radiation keeps basically identical, make burning radiation more average.
Further improvement is: the combustion section of described radiation generator comprises radiant combustion ceramic wafer, and described radiant combustion ceramic wafer is provided with the burner port of longitudinal throughout radiation combustion ceramic plate.
By adopting in this way: radiation happening part controls on the ceramic wafer of gas-fired infrared radiator, compared in prior art using metallic plate as radiation source, radiation profiles is more stablized controlled, distributes more even.Without visible flame during pottery gas-fired infrared combustion system burner combustion, there is energy-saving and environmental protection, safe, stable advantage.
Further improve and be: bottom the described combustion section of described radiation generator, also comprise combustion-supporting net, described combustion-supporting net is positioned under described radiant combustion ceramic wafer, described combustion-supporting net position and form combustion bin between described radiant combustion ceramic wafer and described heat build-up baffle plate, described combustion-supporting online distribution through hole.
By adopting in this way: the pre-mixing gas combustion completely that makes also not burn is lighted again in the combustion-supporting net metal surface of high temperature, formation hot-air rises, thermal updrafts and input air pressure from top to bottom reach dynamic equilibrium, and residue pre-mixing gas combustion is stranded in Thorough combustion in combustion bin.Thus realize pre-mixing gas combustion and reach and burn completely, make the input speed of incident premixed gas and total combustion speed reach the technique effect of balance.
Further improvement is: the described cooling bath of described radiation generator is provided with metal bump and extends to described radiant combustion ceramic wafer bottom sides edge, described radiant combustion ceramic wafer is clamped by combustion section topside metal wall and described cooling bath metal bump acting in conjunction, described cooling bath is provided with metal shoulder pole, described metal shoulder pole is connected to diffusion storehouse metal outer wall, and the air-flow in described cooling bath directly contacts described radiant combustion ceramic wafer outer wall.
By adopting technique scheme: by the elastic construction of the shoulder pole release metalwork bulbs of pressure, radiant combustion ceramic wafer is prevented to be caught broken in combustion because expanding with heat and contract with cold because of metal clamp portion.Improve the service life realizing radiation generator disclosed in the present invention.
A kind of reverse gas-fired radiation method, is characterized in that, specifically comprise the following steps:
Step 1: inject combustion gas to entrance port, imports combustion air in negative-pressure ejecting mode from entrance port;
Step 2: form pre-mixing gas combustion at induction tunnel with combustion air and combustion gas;
Step 3: make pre-mixing gas combustion burn in combustion section;
Step 4: make induction tunnel and combustion section be in the atmospheric pressure bin of bottom opening, make high-pressure chamber be communicated with atmospheric pressure storehouse by aperture;
Step 5: air is imported to high-pressure chamber and makes high-pressure chamber air pressure be greater than atmospheric pressure, form the air stream importing atmospheric pressure storehouse from high-pressure chamber, form the cooling air to the induction tunnel in atmospheric pressure storehouse and combustion section outer wall.
Further improvement is:
Described step 4 is specially: entrance port is in middle pressure storehouse, and induction tunnel and combustion section are in the atmospheric pressure bin of bottom opening, and high-pressure chamber is communicated with atmospheric pressure storehouse by aperture, and high-pressure chamber is communicated with middle pressure storehouse by air port;
Described step 5 is specially: import air to high-pressure chamber and make high-pressure chamber air pressure be greater than atmospheric pressure, import air stream, form the cooling air to the induction tunnel in atmospheric pressure storehouse and combustion section outer wall from high-pressure chamber to atmospheric pressure storehouse; Importing from high-pressure chamber to middle pressure storehouse the order of air stream presses storehouse air pressure slightly larger than atmospheric pressure, forms the combustion air importing entrance port.
Accompanying drawing explanation
Fig. 1 is cut-open view of final assembly of the present invention;
Fig. 2 is air flow schematic diagram in casing of the present invention;
Fig. 3 is that both sides of the present invention high-pressure chamber links up schematic top plan view;
Fig. 4 is the schematic diagram of casing three-view diagram of the present invention;
Fig. 5 is the front view of radiation generator of the present invention;
Fig. 6 is the sectional view of radiation generator of the present invention;
Fig. 7 is the diffusion storehouse of radiation generator of the present invention and the partial sectional view of combustion section;
Fig. 8 is the cross-sectional schematic of the induction tunnel of radiation generator of the present invention;
Fig. 9 is the schematic top plan view of the entrance port of radiation generator of the present invention
Figure 10 is the schematic top plan view of the radiant combustion ceramic wafer of radiation generator of the present invention;
Figure 11 is the FB(flow block) of reverse gas-fired radiation method of the present invention.
The corresponding relation of Reference numeral and each parts is as follows:
1. entrance port; 2. induction tunnel; 3. spread storehouse; 4. combustion section; 11. combustion gas inlets; 12. air inflow apertures; 21. mixing unit; 22. diffusion parts; 23. fin; 31. flow distribution plates; 32. tap holes; 41. radiant combustion ceramic wafers; 42. igniters; 43. combustion-supporting nets; 44. combustion bins; 45. heat build-up baffle plates; 5. cooling bath; 51. air intake vents; 52. air-vents; 6. metal shoulder pole; 7. casing; 71. high-pressure chambers; Ballasting in 72.; 73. atmospheric pressure storehouses; 74. air-blast devices; 75. air ports; 76. through holes; 77. shields.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.Embodiment 1 as Fig. 1-shown:
A kind of reverse gas-fired radiation device, comprise casing 7 and radiation generator, described casing 7 is installed on outside described radiation generator, and described radiation generator includes loophole 1 from top to bottom successively, induction tunnel 2, diffusion storehouse 3, combustion section 4; Entrance port 1 comprises combustion gas inlet 11 and air inflow aperture 12, and entrance port 1 connects peripheral hardware gas feeder, injects combustion gas with small-power gas nozzle; Induction tunnel 2 outer wall comprises fin 23, and fin 23 is evenly distributed on the outer wall of described induction tunnel 2.The rounded tab projection in fin 23 outer; Be respectively mixing unit 21 and diffusion part 22 inside described induction tunnel 2 from top to bottom, mixing unit 21 is Vertical dimension hollow cylinder, and diffusion part 22 is vertical conical hollow cylinder, has the oblique angle that leans outward of 8 ° between diffusion part 22 and mixing unit 21.The diffusion part 22 of induction tunnel 2 connects diffusion storehouse 3, diffusion is provided with flow distribution plate 31 in storehouse 3, flow distribution plate 31 is provided with tap hole 32, tap hole 32 longitudinally runs through flow distribution plate 31, radiant combustion ceramic wafer 41 is established immediately below flow distribution plate 31, radiant combustion ceramic wafer 41 is provided with the burner port of longitudinal throughout radiation combustion ceramic plate 41, burner port is uniformly distributed on radiant combustion ceramic wafer 41, radiant combustion ceramic wafer 41 thickness is 18mm, burner port aperture is 1.37mm, burner port distribution density 210 per square inch; Comprise combustion-supporting net 43 bottom combustion section 4, described combustion-supporting net 43 distributes through hole.Combustion-supporting net 43 is positioned at igniter 42 5mm below radiant combustion ceramic wafer 41.Lower to being provided with heat build-up baffle plate 45 bottom combustion section 4; Combustion section 4 outer wall is provided with cooling bath 5, and this cooling bath 5 upper end is provided with air intake vent 51, and cooling bath 5 lower end is provided with air-vent 52, and air-vent 52, towards ground, has 65 degree of oblique angles in the vertical direction.Be provided with metal bump bottom cooling bath 5 and extend to described radiant combustion ceramic wafer bottom sides edge, described radiant combustion ceramic wafer is clamped jointly by combustion section topside metal wall and described cooling bath metal bump, described radiant burner comprises metal shoulder pole 6, the two ends of described cooling bath 5 both sides difference connection metal shoulder pole 6, described metal shoulder pole 6 is connected to diffusion storehouse 3 top metal outer wall with bolt.
Casing 7 comprises high-pressure chamber 71, middle pressure storehouse 72 and atmospheric pressure storehouse 73, and the entrance port 1 of radiation generator is in described middle pressure storehouse 72, and described radiation generator remaining part is in described atmospheric pressure storehouse 73; Described high-pressure chamber 71 connects peripheral hardware air-blast device 74 and blasts cooling air, and this air-blast device 74 air intake vent is provided with clarifier, and described high-pressure chamber 71 connects described atmospheric pressure storehouse 73 by bunghole 76, and described middle pressure storehouse 72 is connected by air port with described high-pressure chamber 71.The air port that described middle pressure storehouse 72 is connected with described high-pressure chamber 71 comprises shield 77, and described shield 77 is by regulating the intake size in the described air port 75 of flexible change of bolt on shield.Described atmospheric pressure storehouse 73 bottom opening and extraneous air ditch storehouse internal gas pressure of issuing a general order to equals atmospheric pressure, and the storehouse internal gas pressure of described high-pressure chamber 71 is greater than the storehouse internal gas pressure in described middle pressure storehouse 72, and the storehouse internal gas pressure in described middle pressure storehouse 72 is greater than atmospheric pressure; Combustion gas combustion section 4 burn institute produce radiation by described atmospheric pressure storehouse 73 bottom opening injection, there is not gas exchanges in described middle pressure storehouse 72 and described atmospheric pressure storehouse 73.
Described casing entirety is the cylinder of circular in cross-section, described atmospheric pressure storehouse 73 is positioned at casing 7 centre position, lower ending opening is just to the combustion section 4 of the anti-raw device of radiation, described middle pressure storehouse 72 is distributed on the upside of described atmospheric pressure storehouse 73, described high-pressure chamber 71 is distributed in both sides, described atmospheric pressure storehouse 73, the high-pressure chamber 71 of both sides is communicated with each other with large-diameter circular passage, and namely the high-pressure chamber 71 that air-blast device 74 is only connected to side forms both sides high-pressure chamber 71 equipressure.
Cylindrical casing 7 is installed on outside the radiation generator of multiple parallel placement, makes multiple radiation generator linkage work, the radiating surface of multiple radiation generator is connected into an overall large radiation face.
In practice, canned natural gas via three sections decompression injects reverse infrared radiation generator with gas nozzle from combustion gas inlet 11, and the air pressure of gas nozzle end controls to be 3 kPas.Under Venturi effect, form negative pressuren zone at nozzle towards both sides, drainage entrance port 1 surrounding air pours into the induction tunnel 2 of reverse infrared radiation generator from the air inflow aperture 12 of entrance port 1.Air stream and natural gas flow form pre-mixing gas combustion in the compression of induction tunnel 2 mixing unit 21, and pre-mixing gas combustion carries out first stage diffusion at induction tunnel 2 diffusion part 22; Pre-mixing gas combustion enters diffusion storehouse 3 by induction tunnel 2 diffusion part 22, second stage diffusion is carried out in diffusion epimere space, storehouse 3, be deposited on flow distribution plate 31 and form the 3rd section of diffusion by tap hole 32, evenly enter in the burner port of the radiation ceramic burner plate 41 under flow distribution plate 31, radiation ceramic burner plate 41 lighted by igniter 42, records pre-mixing gas combustion in the 2-3cm place flameless combustion of burner port lower end.The air mixture of not burning completely is lighted again in combustion-supporting net 43 metal surface of high temperature, dynamic equilibrium is reached with thermal updrafts and input air-flow from top to bottom, be stranded in combustion bin 44 and burn completely, the input speed of incident premixed gas and total combustion speed is made to reach balance, and to radiation area generation radiation.
Air stream blasts the high-pressure chamber 71 of casing after the purification of peripheral hardware air-blast device, pressure in high-pressure chamber 71 storehouse is made to be greater than atmospheric pressure, thus, both sides high-pressure chamber 71 imports air by the through hole 76 of atmospheric pressure storehouse 73 sidewall in atmospheric pressure storehouse 73, because in atmospheric pressure storehouse 73, radiation generator carries out combustion reaction, temperature is higher than high-pressure chamber 71 temperature, therefore high-pressure chamber 71 imports air is formed radiator induction tunnel 2, the cooling air of the outer metal housing of diffusion storehouse 3 and combustion section 4, and derived by atmospheric pressure 73 storehouse bottom opening; Pressure in the storehouse that in high-pressure chamber 71 storehouse, pressure is greater than middle pressure storehouse 72, therefore high-pressure chamber 71 by air port 75 centering pressure storehouse 72 import air stream serve as entrance port 1 import combustion-supporting air flow, thus, although spatially atmospheric pressure storehouse 73 and middle pressure storehouse 72 are linked up by high-pressure chamber 71, but the storehouse internal gas pressure because of high-pressure chamber 71 is greater than middle pressure storehouse 72 and atmospheric pressure storehouse 73, achieve in pressure storehouse 72 and atmospheric pressure storehouse 73 and there is not gas exchanges, achieve the shunting completely of the combustion-supporting air flow in middle pressure storehouse 72 and the cooling-air stream in atmospheric pressure storehouse 73.Storehouse, middle pressure storehouse 72 internal gas pressure is greater than atmospheric pressure, therefore the dust in extraneous air therefrom can not be pressed in the fine gap of storehouse 72 and peripheral hardware gas feeder junction and entered middle pressure storehouse 72 enter radiation generator inside from entrance port 1 thus.Thus substantially there is no dust in ensure that the pre-mixing gas combustion that radiation generator inputs on the whole.
The radiation generator temperature produced because of burning is up, and the cooling air imported by high-pressure chamber 71 is to induction tunnel 2, and combustion section 4 outer wall cools.Cooling bath 5 air intake vent 51 of cooling air spontaneous combustion portion 4 shell enters, and discharges from cooling bath 5 air-vent 52, forms negative pressure space at radiation area edge, produces negative pressure drainage effect.The steam ordered about on the burnt gas of radiation area and material moves to negative pressuren zone, reaches the exhaust cycle effect of radiation area.Because realize much slower than prior art of pre-mixing gas combustion speed of input, fuel gas buring is very complete, after testing, does not almost have carbon monoxide and nitrogen oxide in combusted air, reaches the expection technique effect of energy-saving and emission-reduction.
The above, be only one embodiment of the present invention, the present invention is not limited to the restriction of above-described embodiment, all above-described embodiment is done according to technical spirit of the present invention similar amendment, change and replacement, still belong in the scope of technical scheme of the present invention.Protection scope of the present invention is only defined by claims.
Claims (15)
1. a reverse gas infrared radiation device, comprise casing and radiation generator, described casing is installed on outside described radiation generator, described radiation generator includes loophole, induction tunnel and combustion section, described entrance port connects peripheral hardware gas feeder, injects combustion gas, import air in combustion gas injection mode with small-power gas nozzle; Air and combustion gas form pre-mixing gas combustion in induction tunnel, burn in described combustion section;
It is characterized in that: described casing comprises atmospheric pressure storehouse and high-pressure chamber, described high-pressure chamber connects air-blast device and blasts cooling air, and make the storehouse internal gas pressure of described high-pressure chamber be greater than atmospheric pressure, described high-pressure chamber connects described atmospheric pressure storehouse by aperture; Bottom opening and the extraneous air in described atmospheric pressure storehouse are linked up, and make storehouse, described atmospheric pressure storehouse internal gas pressure equal atmospheric pressure, and the radiation that described combustion section produces is penetrated by bottom atmospheric pressure storehouse; Described induction tunnel, described combustion section is in described atmospheric pressure storehouse.
2. a reverse gas infrared radiation device as claimed in claim 1, is characterized in that: described radiation generator includes loophole, induction tunnel and combustion section; Described entrance port comprises combustion gas inlet and air inflow aperture, and described combustion gas inlet is provided with small-power gas nozzle and connects outer combustion gas feedway, and combustion gas is spurted within described entrance port by described small-power gas nozzle from described combustion gas inlet; Described induction tunnel connects described entrance port, the air that described entrance port imports and combustion gas form pre-mixing gas combustion in described induction tunnel, described induction tunnel connects described combustion section, described combustion section is provided with igniter, pre-mixing gas combustion imports described combustion section by described induction tunnel, lighted by described igniter, burn in described combustion section, produce infrared radiation to immediately below described combustion section; Described induction tunnel, combustion section outer wall is undertaken continuing cooling by blasting cooling air, and also comprise heat build-up baffle plate, described heat build-up baffle plate is located at edge under described combustion section.
3. a reverse gas infrared radiation device as claimed in claim 2, is characterized in that: described casing is the rounded cylinder in cross section, and described atmospheric pressure position in storehouse is in casing centre position, and described high-pressure chamber is distributed in both sides, described atmospheric pressure storehouse.
4. a reverse gas infrared radiation device as claimed in claim 3, is characterized in that: described casing is installed on outside the radiation generator of multiple parallel placement.
5. a reverse gas infrared radiation device as described in any one of claim 2 to 4, it is characterized in that: described casing also comprises middle pressure storehouse, the entrance port of described radiation generator is in described middle pressure storehouse, described middle pressure storehouse is connected with described high-pressure chamber by air port, high-pressure chamber connects air-blast device and blasts cooling air, described air-blast device port is provided with purifier purification drum as entered the dust in cooling air, the storehouse internal gas pressure in described middle pressure storehouse is greater than atmospheric pressure, and described middle pressure storehouse and described atmospheric pressure storehouse do not exist gas exchanges.
6. a reverse gas infrared radiation device as claimed in claim 5, is characterized in that: the air port that described middle pressure storehouse is connected with described high-pressure chamber comprises shield, and stretching by adjustment shield changes the size in described air port.
7. a reverse gas infrared radiation device as claimed in claim 6, it is characterized in that: described radiation generator combustion section outer wall is provided with cooling bath, described cooling bath upper end is provided with air intake vent, described cooling bath lower end is provided with air-vent, described air intake vent blasts cooling blast by blower fan, cooling blast is discharged from cooling bath by described air-vent, and described air-vent, towards ground, has an oblique angle in the vertical direction.
8. a reverse gas infrared radiation device as claimed in claim 6, it is characterized in that: described radiation generator induction tunnel comprises fin, the rounded tab projection in described fin outer, described fin is evenly distributed on incident pipe outer wall.
9. a reverse gas infrared radiation device as claimed in claim 6, it is characterized in that: described radiation generator injection portion comprises mixing unit and diffusion part from top to bottom, described mixing unit is vertical hollow cylinder, described diffusion part is vertical conical hollow cylinder, in the vertical direction and have the oblique angle that leans outward of 8 ° between mixing unit.
10. a reverse gas infrared radiation device as claimed in claim 6, it is characterized in that: described radiation generator also comprises diffusion storehouse, described diffusion bin location is between described induction tunnel and described combustion section, described diffusion storehouse outer wall is blown into cooling air by blower fan and continues cooling, described diffusion storehouse comprises flow distribution plate, described flow distribution plate is provided with tap hole, and described tap hole longitudinally runs through described flow distribution plate.
11. 1 kinds of reverse gas infrared radiation devices as claimed in claim 6, it is characterized in that: the combustion section of described radiation generator comprises radiant combustion ceramic wafer, described radiant combustion ceramic wafer is provided with the burner port of longitudinal throughout radiation combustion ceramic plate.
12. 1 kinds of reverse gas infrared radiation devices as claimed in claim 11, it is characterized in that: bottom the described combustion section of described radiation generator, also comprise combustion-supporting net, described combustion-supporting net is positioned under described radiant combustion ceramic wafer, described combustion-supporting net position and form combustion bin between described radiant combustion ceramic wafer and described heat build-up baffle plate, described combustion-supporting online distribution through hole.
13. 1 kinds of reverse gas infrared radiation devices as claimed in claim 7, it is characterized in that: the described cooling bath of described radiation generator is provided with metal bump and extends to described radiant combustion ceramic wafer bottom sides edge, described radiant combustion ceramic wafer is clamped by combustion section topside metal wall and described cooling bath metal bump acting in conjunction, described cooling bath is provided with metal shoulder pole, described metal shoulder pole is connected to diffusion storehouse metal outer wall, and the air-flow in described cooling bath directly contacts described radiant combustion ceramic wafer outer wall.
14. 1 kinds of reverse gas-fired radiation methods, is characterized in that, specifically comprise the following steps:
Step 1: inject combustion gas to entrance port, imports combustion air in negative-pressure ejecting mode from entrance port;
Step 2: form pre-mixing gas combustion at induction tunnel with combustion air and combustion gas;
Step 3: make pre-mixing gas combustion burn in combustion section;
Step 4: make induction tunnel and combustion section be in the atmospheric pressure bin of bottom opening, make high-pressure chamber be communicated with atmospheric pressure storehouse by aperture;
Step 5: air is imported to high-pressure chamber and makes high-pressure chamber air pressure be greater than atmospheric pressure, form the air stream importing atmospheric pressure storehouse from high-pressure chamber, form the cooling air to the induction tunnel in atmospheric pressure storehouse and combustion section outer wall.
15. 1 kinds of reverse gas-fired radiation methods according to claim 14, is characterized in that:
Described step 4 is specially: entrance port is in middle pressure storehouse, and induction tunnel and combustion section are in the atmospheric pressure bin of bottom opening, and high-pressure chamber is communicated with atmospheric pressure storehouse by aperture, and high-pressure chamber is communicated with middle pressure storehouse by air port;
Described step 5 is specially: import air to high-pressure chamber and make high-pressure chamber air pressure be greater than atmospheric pressure, import air stream, form the cooling air to the induction tunnel in atmospheric pressure storehouse and combustion section outer wall from high-pressure chamber to atmospheric pressure storehouse; Importing from high-pressure chamber to middle pressure storehouse the order of air stream presses storehouse air pressure slightly larger than atmospheric pressure, forms the combustion air importing entrance port.
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| CN106568319A (en) * | 2015-10-13 | 2017-04-19 | 上海蓝炽热能科技有限公司 | Non-contact infrared radiation system |
| CN108644770A (en) * | 2018-04-12 | 2018-10-12 | 上海蓝炽热能科技有限公司 | Reverse gas infrared radiation system |
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| CN104930508B (en) | 2018-02-02 |
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