CN102151629B - Pulse combustion-driven hot fine water mist generation method and device - Google Patents
Pulse combustion-driven hot fine water mist generation method and device Download PDFInfo
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- CN102151629B CN102151629B CN 201110089183 CN201110089183A CN102151629B CN 102151629 B CN102151629 B CN 102151629B CN 201110089183 CN201110089183 CN 201110089183 CN 201110089183 A CN201110089183 A CN 201110089183A CN 102151629 B CN102151629 B CN 102151629B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003595 mist Substances 0.000 title claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 8
- 239000002737 fuel gas Substances 0.000 claims abstract description 6
- 230000008016 vaporization Effects 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims description 45
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- 230000008676 import Effects 0.000 claims description 16
- 239000000567 combustion gas Substances 0.000 claims description 15
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- 230000003321 amplification Effects 0.000 abstract 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 2
- 230000002045 lasting effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 239000003502 gasoline Substances 0.000 description 7
- 239000000446 fuel Substances 0.000 description 5
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Abstract
The invention relates to a pulse combustion-driven hot fine water mist generation method and a pulse combustion-driven hot fine water mist generation device. The hot fine water mist generation method consists of two phase change processes of water, wherein the first phase change is accomplished by vaporizing water into water vapor with a pulse combustion heating device; and the second phase change is accomplished by accelerating the water vapor in a Laval nozzle to convert heat energy into kinetic energy and lowering the temperature of the water vapor in an acceleration process to condense the water vapor into liquid drops with a very small diameter and into fine water mist. The liquid drops are mixed with fuel gas (which is mainly CO2) generated by pulse combustion at the position of the outlet of a spray pipe, and at the same time, the fuel gas heats the fine water mist to 60 to 80 DEG C to form hot fine water mist; and the fuel gas and the hot fine water mist are sprayed to fire sites to extinguish fires. A corresponding portable amplification device consists of three parts, namely, a pulse combustor, a clamping sleeve and a water supply system. The corresponding portable amplification device has the advantages of high extinguishing efficiency, high extinguishing speed, long extinguishing lasting time and the like. The device is mainly used in the field of fire fighting and can also be used in the field of pesticide spraying, mist production and the like.
Description
Technical field
The present invention relates to the thin water smoke generation method of heat and device that a kind of intermittent combustion drives, adopt Hai Ermuhuoci type pulsating combusting device as heating source, make vaporizing liquid and through jet pipe acceleration and liquefaction, produce the thin water smoke of high-speed motion.This mancarried device is mainly used in the fire-fighting fire extinguishing field, also can be applicable to the fields such as pesticide spraying, smog generation.
Background technology
Fire extinguishing produces required power source commonly used with thin water smoke and mainly contains two classes: a class is pump; Another kind of is high pressure compressed gas.Pump is generally by motor or internal combustion engine drive, and volume is large, weight is large, vibration is violent, is difficult to the power source as the Portable liquid fog device.The power source of Portable liquid fog device generally all adopts the mode of high pressure compressed gas extruding, such as Chinese invention patent application: application number is 200710100396.7 portable type superfine aerosol fire extinguisher, its power source adopts the extruding gas cylinder, but because volume and weight is limit, the extruding gas cylinder can not be very large, very heavy, the gas-storing capacity of gas cylinder is limited, and along with the minimizing gas pressure decay of water is very fast, to the thin water smoke that can't form at last effective injection.This just causes the working time of mancarried device shorter, generally can only keep for tens seconds, is unfavorable for producing for a long time ultra-fine liquid mist; Again fill gas cylinder, gas cylinder is changed also very trouble; Carry gas cylinder concerning the fire extinguishing personnel, always have certain danger.In addition, the mode overwhelming majority of the atomization of liquid executing agency that all needs to atomize is that nozzle is realized.The atomization characteristics of the type of nozzle, processing precision direct influence water smoke comprises fogdrop diameter, spray velocity etc.If obtain fogdrop diameter less than 100 microns thin water smoke, the diameter of nozzle is less than 0.8 millimeter usually, and pressure is higher than 2MPa.Therefore, the processing cost of mist-generating nozzle and machining accuracy are difficult to control, and the mist-generating nozzle of minor diameter is easy to stop up, and the reliability of system is reduced.In addition, even under condition of high voltage (pressure is greater than 3.45MPa), its penetration range of thin water smoke that sprays from nozzle also only has several meters, can't effectively penetrate flame for the thin water smoke of category-A fire and arrive burning things which may cause a fire disaster inside, and its effect of putting out a fire is unsatisfactory.
In addition, Chinese invention patent application, publication number is CN101869096A, CN1462580A, the utility model patent publication number is fog machine or the atomizer that CN201565390U, CN2547418Y etc. have proposed to utilize the intermittent combustion driving.But the application principle of these fog machines or atomizer mainly is to utilize negative pressure that the pulsating combustor tail pipe produces to liquid or water carries out the injection ejection.Its herb liquid or water are connected in the pulsating combustor tail pipe by storage tank, utilize the combustion gas velocity fluctuation in the tail pipe to carry ejection, and medicinal liquid flow is very little, can only produce the effect of filling the air.Use large flow liquid that fog machine can't be worked.
Summary of the invention
The present invention relates to the thin water smoke generation method of heat and device that a kind of intermittent combustion drives, to solve problems of the prior art.
Technical scheme of the present invention is as follows: Fig. 1 is the schematic diagram of the inventive method.In conjunction with Fig. 1 the thin water smoke generation of this heat method is described as follows: the method specifically makes the water experience be deformed into mutually the thin water smoke of heat for twice: at first water at first enters chuck after storage tank flows out, in chuck, utilize the heat of high-temperature fuel gas in combustion chamber and the tail pipe that water is heated, make it vaporization, realize for the first time phase transformation; Secondly, the high-temperature high-pressure steam Lavalle chuck jet pipe of flowing through, air velocity increases, and temperature reduces, and water recovery becomes the very little drop of diameter, realizes for the second time phase transformation; In the combustion gas mixing of Laval nozzle exit and intermittent combustion generation, simultaneously combustion gas is heated to 60～80 ℃ with thin water smoke, becomes the thin water smoke of heat, sprays to ignition source afterwards.
The thin water smoke generation method of the heat that a kind of intermittent combustion drives, detailed process is as follows: adopt Hai Ermuhuoci type pulsating combusting device, this type burner can produce self-oscillatory pulse pneumatic, and gas can greatly improve combustion intensity, combustion completion and the combustion gas convection transfer rate in the unit volume.After water flow into chuck by storage tank, in a～b section, heat is passed to extinguishing chemical (water) by the chamber wall of pulsating combusting device, after flowing through a b place, under the continuation heating of pulsating combusting device tail pipe, temperature is above 100 ℃, water is heated and becomes the saturated vapor with certain pressure and temperature, in b～c section, water all evaporation becomes water vapour, finishes the phase transition process first time of water; Water vapour continues to flow into Laval nozzle along chuck, it is a process of accelerating gradually that water vapour flows along Laval nozzle, the temperature of water vapour reduces in c～d section accelerator, some d place at jet pipe is reduced under the set point, water vapour becomes some tiny droplets in d～e section flow process, finishes for the second time phase transformation.Droplet is sprayed with supersonic speed by jet pipe, even can guarantee that like this fogdrop diameter is very little, also can have very high speed, increases eject momentum and jet length.In e～f section, (main component is CO to thin water smoke at outside nozzle and combustion product
2) mix, combustion gas is heated to 60～80 ℃ with water droplet, is called " the thin water smoke of heat "." the thin water smoke of heat " fire extinguishing is more effective than the thin water smoke of normal temperature, this is because evaporation of water was comprised of two stages, first stage water by normal temperature (20 ℃) to 100 ℃ (boiling points), second stage is become 100 ℃ water vapour by 100 ℃ water, gasification latent heat (being about 2259kJ/kg) is water by normal temperature to the needed heat of boiling point (being about 334kJ/kg) nearly 7 times, although loss sub-fraction caloric receptivity (about 14%), but because the leading mechanism of fine mist fire-fighting is that water vapour suffocates, therefore do like this and can droplet be evaporated faster to become water vapour to finish flame to suffocate, improve the utilization rate of fire-fighting efficiency and water.Like this, the energy that utilizes fuel combustion to bring by twice phase transition process of water, has realized normal-temperature water is become the production process of high-speed fine water smoke, the combustion gas (CO that burner produces
2) make original thin water smoke heating and participate in fire extinguishing with thin water smoke, thereby realize that jet velocity height, distance, fogdrop diameter are little, have uniform temperature and with combustion gas (CO
2) production method of the thin water smoke of heat that mixes.
The below illustrates the present invention take portable as embodiment, sees Fig. 2.
The thin water smoke generating apparatus of the heat that a kind of intermittent combustion drives, this device is comprised of three parts, i.e. pulsating combusting device, chuck and water system.Pulsating combusting device adopts Hai Ermuhuoci acoustic resonance type, and fuel is gasoline, mainly is comprised of import check valve 1, carburetor passage 2, throttle 3, fuel tank 4, igniting hand air pump 5, combustion chamber 6, tail pipe 7, spark plug 15 and igniter 16; Chuck is the outside circular passage that forms mathematical models of pulsating combusting device combustion chamber and tail pipe, is comprised of straight tube chuck section 8 and Lavalle chuck jet pipe 9; Water system is comprised of water regulating valve 10, pressure check valve 11, storage tank 12, external feed water valve 13 and external feed pipe 14.Its structure and annexation are: the import check valve 1 of Hai Ermuhuoci pulsating combusting device is by carburetor passage 2 and combustion chamber 6 welding, and weld with tail pipe 7 combustion chamber 6; Fuel tank 4 communicates by the smallest cross-sectional of oil feed line with carburetor passage 2, at oil feed line throttle 3 is installed; Igniting hand air pump 5 is communicated with import check valve 1 by gas piping.Spark plug 15 is installed in carburetor passage throat and combustion chamber 6 linkage sections by screw thread, also can be installed on the chamber wall, and spark plug 15 is by igniter 16 controls.Straight tube chuck section 8 and Lavalle chuck jet pipe 9 weld together, and are co-axially mounted on the outside of pulsating combusting device combustion chamber 6 and tail pipe 7, form chuck, water supply heating and water vapour mobile.Storage tank 12 is arranged at the chuck top, and communicates with chuck by feed pipe, at feed pipe water regulating valve 10 and pressure check valve 11 is installed, and is connected to external feed water valve 13 and external feed pipe 14 at storage tank 12.
Wherein, apparatus of the present invention can be utilized combustion chamber and tail pipe heat that water is heated on the one hand and make its vaporization; Can utilize on the other hand water that combustion chamber and tail pipe are lowered the temperature prevents from realizing working long hours because overheated generation flexural deformation affects serviceability.
Wherein, the outlet of tail pipe 7 should be stretched out the outer 1～2cm of outlet of Lavalle chuck jet pipe 9, and the thin jet spray of Lavalle chuck nozzle exit ejection does not produce interference to combustion gas in the tail pipe, so intermittent combustion function independence steady operation.
Wherein, the driving of storage tank 12 interior water realizes that by pre-storage pressure this stores up pressure in advance is 0.2-0.3MPa.
The thin water smoke method of generationing of the heat that a kind of intermittent combustion of the present invention drives and device, its advantage and effect are: the present invention utilizes pulsating combusting device and Laval nozzle, makes water experience phase transition process twice, produces thin water smoke, and with the CO of burning generation
2Combustion gas mixing sprays to the breaking out of fire zone, realizes the at a high speed thin water smoke drop of heat and CO
2The fire extinguishing effect of associating, the present invention can timeless work in the situation at amount of gasoline that increase is carried and external water source, and is especially more effective to the fire (such as Forest Fire, building fire) of longer duration.Simultaneously, the thin water smoke of heat has good fire extinguishing effect for cold place or initial fire disaster, water consumption of the present invention seldom, without any pollution, volume is little, and is safe to carry.That the present invention can be designed to as required is portable, cart type, vehicular and stationary installation." the thin water smoke of heat " of the present invention fire extinguishing is more effective than the thin water smoke of normal temperature, and the energy that utilizes fuel combustion to bring by twice phase transition process of water, has realized normal-temperature water is become the production process of high-speed fine water smoke, the combustion gas (CO that burner produces
2) make original thin water smoke heating and participate in fire extinguishing with thin water smoke, jet velocity height, distance, fogdrop diameter are little, the better effects if of putting out a fire.
Description of drawings:
Fig. 1: intermittent combustion drives the thin water smoke occurring principle of heat.
Fig. 2: intermittent combustion drives atomization of liquid mancarried device.
Number in the figure is described as follows:
Import check valve 1; Carburetor passage 2; Throttle 3; Fuel tank 4; Igniting hand air pump 5; Combustion chamber 6; Tail pipe 7; Straight tube chuck section 8; Lavalle chuck jet pipe 9; Water regulating valve 10; Check valve 11; Storage tank 12; External feed water valve 13; External feed pipe 14; Spark plug 15; Igniter 16.
The specific embodiment:
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further.
As shown in Figure 2, the thin water smoke generating apparatus of the heat that a kind of intermittent combustion drives, this device is comprised of three parts, i.e. pulsating combusting device, chuck and water system.Pulsating combusting device adopts Hai Ermuhuoci acoustic resonance type, and fuel is gasoline, mainly is comprised of import check valve 1, carburetor passage 2, throttle 3, fuel tank 4, igniting hand air pump 5, combustion chamber 6, tail pipe 7, spark plug 15 and igniter 16; Chuck is the outside circular passage that forms mathematical models of pulsating combusting device combustion chamber and tail pipe, is comprised of straight tube chuck section 8 and Lavalle chuck jet pipe 9; Water system is comprised of water regulating valve 10, pressure check valve 11, storage tank 12, external feed water valve 13 and external feed pipe 14.Its structure and annexation are: the import check valve 1 of Hai Ermuhuoci pulsating combusting device is by carburetor passage 2 and combustion chamber 6 welding, and weld with tail pipe 7 combustion chamber 6; Fuel tank 4 communicates by the smallest cross-sectional of oil feed line with carburetor passage 2, at oil feed line throttle 3 is installed; Igniting hand air pump 5 is communicated with import check valve 1 by gas piping that (hand air pump 5 of lighting a fire is communicated in the space of import check valve 1 back.The effect of import check valve 1 is to close when chamber pressure is higher, prevents that gas from flowing out from the rear portion, and opens when chamber pressure is low, allows fresh air enter into the combustion chamber.When pulsating combusting device started, igniting hand air pump 5 was toward the inflation of import check valve 1 rear portion, and pressure is higher, and import check valve 1 is closed, and gas can only flow in the combustion chamber forward.Simultaneously gasoline ejection enters the combustion chamber and forms premixed gas under gas drives.This moment, spark plug 15 was lighted premixed gas, and pressure uprises, and import check valve 1 is in closed condition always, produced negative pressure after gas flows out, and import check valve 1 is opened, and this moment, pulsating combusting device can be realized moving voluntarily, and hand air pump 5 air feed no longer need to light a fire.Therefore light a fire hand air pump just in order to help pulsating combusting device to start).Spark plug 15 is installed in carburetor passage throat and combustion chamber 6 linkage sections by screw thread, also can be installed on the chamber wall, and spark plug 15 is by igniter 16 controls.Straight tube chuck section 8 and Lavalle chuck jet pipe 9 weld together, and are co-axially mounted on the outside of pulsating combusting device combustion chamber 6 and tail pipe 7, form chuck, water supply heating and water vapour mobile.Storage tank 12 is arranged at the chuck top, and communicates with chuck by feed pipe, at feed pipe water regulating valve 10 and pressure check valve 11 is installed, and is connected to external feed water valve 13 and external feed pipe 14 at storage tank 12.
It is as follows that this intermittent combustion drives the device for atomizing liquid course of work:
(1) gasoline and the water that will set in advance dosage are injected into respectively in fuel tank 4 and the storage tank 12, are filled with compressed air to 0.2～0.3MPa then for storage tank 12, install No. 1 dry cell of two joints at igniter 16.
(2) press ignition starting switch, spark plug 15 energising igniting, then begin operation igniting hand air pump 5, open simultaneously throttle 3, gasoline is mixed into the mixed gas of fuel because siphonic effect enters carburetor passage 2 with the air that air pump 5 feeds, lighted during by spark plug 15, make and set up the intermittent combustion process in pulsating combusting device combustion chamber and the tail pipe.At this moment close ignition switch and hand air pump 5 operations that stop to light a fire, intermittent combustion continues automatically to carry out, and regulates throttle 3 switches, can control within the specific limits the output of pulsating combusting device power.
(3) after pulsating combusting device starts, the adjustable valve 10 of fetching boiling water, water is at the chuck that enters under the effect of storage tank 12 internal pressures between straight tube chuck section 8 and combustion chamber 6 outer walls, the water that enters in the chuck is subjected to thermal evaporation to become water vapour, spout direction along from chuck to Lavalle chuck jet pipe 9 flows, in the situation of determining pulsating combusting device throttle 3 and water regulating valve 10 apertures, can guarantee that by design there is a stationary value in the pressure of water vapour in chuck, this stationary value is 0.1～0.2MPa.Check valve 11 guarantees and can only flow to chuck by water that even water vapor pressure is higher than storage tank 12 internal pressures in some situation chuck, because the existence of check valve 11, water vapour also can't enter storage tank 12, keeps normal operation and guarantees storage tank safety.
(4) (0.1～0.2MPa) water vapour is by in the process of Lavalle chuck jet pipe 9 for the high temperature (120 ℃～130 ℃) in the chuck, high pressure, temperature and the pressure of water vapour reduce gradually, flow velocity increases gradually, in Lavalle chuck jet pipe 9 expansion segment somewheres, the temperature of water vapour is lower than the condensation point of water, the part water vapour can be condensed into little water droplet, by the spout ejection, forms thin water smoke with another part water vapour.
(5) combustion gas (CO of pulsating combusting device gasoline combustion generation
2) through tail pipe 7 ejections, mix combustion gas (CO at the jet pipe place with thin water smoke
2) fluctuation velocity be about 100m/s, itself has uniform temperature, when mixing with thin water smoke thin water smoke is had certain heat effect, by the design can make the temperature of thin water smoke maintain 60～80 ℃.So just form thin water smoke and the fuel gas mixture jet of the high speed with 60～80 ℃, sprayed into scene of a fire fire extinguishing.
Claims (4)
1. the hot water mist generating device that drives of an intermittent combustion, it is characterized in that: this device is comprised of three parts, i.e. pulsating combusting device, chuck and water system; Pulsating combusting device adopts Hai Ermuhuoci acoustic resonance type, is comprised of import check valve (1), carburetor passage (2), throttle (3), fuel tank (4), igniting hand air pump (5), combustion chamber (6), tail pipe (7), spark plug (15) and igniter (16); Chuck is the outside circular passage that forms mathematical models of pulsating combusting device combustion chamber and tail pipe, is comprised of straight tube chuck section (8) and Lavalle chuck jet pipe (9); Water system is comprised of water regulating valve (10), pressure check valve (11), storage tank (12), external feed water valve (13) and external feed pipe (14); Its structure and annexation are: the import check valve (1) of Hai Ermuhuoci pulsating combusting device is by carburetor passage (2) and combustion chamber (6) welding, and weld with tail pipe (7) combustion chamber (6); Fuel tank (4) communicates by the smallest cross-sectional of oil feed line with carburetor passage (2), at oil feed line throttle (3) is installed; Igniting hand air pump (5) is communicated with import check valve (1) by gas piping; Spark plug (15) is installed in the linkage section of carburetor passage throat and combustion chamber (6) by screw thread, and spark plug (15) is controlled by igniter (16); Straight tube chuck section (8) and Lavalle chuck jet pipe (9) weld together, and are co-axially mounted on the outside of pulsating combusting device combustion chamber (6) and tail pipe (7), form chuck; Storage tank (12) is arranged at the chuck top, and communicates with chuck by feed pipe, at feed pipe water regulating valve (10) and pressure check valve (11) is installed, and is connected to external feed water valve (13) and external feed pipe (14) at storage tank (12).
2. the hot water mist generating device that drives of intermittent combustion according to claim 1, it is characterized in that: the outlet of described tail pipe (7) should be stretched out the outer 1 ~ 2cm of outlet of Lavalle chuck jet pipe (9), the thin jet spray of Lavalle chuck nozzle exit ejection does not produce interference to combustion gas in the tail pipe, so intermittent combustion function independence steady operation.
3. the hot water mist generating device that 1 described intermittent combustion drives according to right is characterized in that: the driving of the interior water of described storage tank (12) realizes that by pre-storage pressure this stores up pressure in advance is 0.2-0.3MPa.
4. thin water smoke method for generation of the heat of utilizing intermittent combustion to drive, the hot water mist generating device that the method specifically utilizes a kind of intermittent combustion claimed in claim 1 to drive, make the water experience be deformed into mutually the thin water smoke of heat for twice: at first water at first enters chuck after storage tank flows out, in chuck, utilize the heat of high-temperature fuel gas in combustion chamber and the tail pipe that water is heated, make it vaporization, realize for the first time phase transformation; Secondly, the high-temperature high-pressure steam Lavalle chuck jet pipe of flowing through, air velocity increases, and temperature reduces, and water recovery becomes the very little drop of diameter, realizes for the second time phase transformation; In the combustion gas mixing of Laval nozzle exit and intermittent combustion generation, simultaneously combustion gas is heated to 60 ~ 80 ℃ with thin water smoke, becomes the thin water smoke of heat, sprays to ignition source afterwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110089183 CN102151629B (en) | 2011-04-11 | 2011-04-11 | Pulse combustion-driven hot fine water mist generation method and device |
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| CN 201110089183 CN102151629B (en) | 2011-04-11 | 2011-04-11 | Pulse combustion-driven hot fine water mist generation method and device |
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| CN102151629A CN102151629A (en) | 2011-08-17 |
| CN102151629B true CN102151629B (en) | 2013-05-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103993979B (en) * | 2013-05-11 | 2017-01-18 | 摩尔动力(北京)技术股份有限公司 | phase-change engine |
| CN105580797A (en) * | 2014-11-14 | 2016-05-18 | 齐元刚 | Mist sprayer |
| CN107899167B (en) * | 2017-11-22 | 2023-02-03 | 西安科技大学 | Preheating type water mist fire extinguishing system and water mist nozzle |
| CN107754148A (en) * | 2017-12-08 | 2018-03-06 | 中国空气动力研究与发展中心高速空气动力研究所 | Supersonic jet fire extinguishing component and fire extinguisher |
| CN108464291B (en) * | 2018-05-17 | 2024-03-26 | 广东飞翔达科技有限公司 | Pulse combustion diffuse spraying device and flying pesticide diffuse sprayer |
| CN109601522A (en) * | 2019-02-03 | 2019-04-12 | 南京林业大学 | The compound bird repellent method of physical chemistry based on unmanned aerial vehicle platform |
| CN113907239B (en) * | 2021-12-14 | 2022-03-22 | 中国农业科学院农产品加工研究所 | Continuous powder steam pressure difference sterilization system and sterilization method |
| CN114766455B (en) * | 2022-04-20 | 2023-07-25 | 芜湖快螳螂智能设备有限公司 | Medicine spraying structure of steam sprayer |
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| CN2547418Y (en) * | 2002-06-06 | 2003-04-30 | 侯大平 | Spraying machine |
| CN1462580A (en) * | 2002-11-28 | 2003-12-24 | 李建化 | Method of generating smoke for destroying insects and device for blowing out pulsed smoke as well as disinsection machine using pulsed smoke |
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| CN202097055U (en) * | 2011-04-11 | 2012-01-04 | 北京航空航天大学 | Hot water mist generating device driven by pulsating combustion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8747101B2 (en) * | 2005-01-21 | 2014-06-10 | Sulzer Metco (Us) Inc. | High velocity oxygen fuel (HVOF) liquid fuel gun and burner design |
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|---|---|---|---|---|
| CN2547418Y (en) * | 2002-06-06 | 2003-04-30 | 侯大平 | Spraying machine |
| EP1603684B1 (en) * | 2002-11-19 | 2009-03-11 | IBEDA Sicherheitsgeräte und Gastechnik GmbH & Co. KG | Low-temperature high-velocity flame spraying system |
| CN1462580A (en) * | 2002-11-28 | 2003-12-24 | 李建化 | Method of generating smoke for destroying insects and device for blowing out pulsed smoke as well as disinsection machine using pulsed smoke |
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