CN1018575B

CN1018575B - Ultrasonic combustion apparatus for burning water-added liquid fuel

Info

Publication number: CN1018575B
Application number: CN 88107195
Authority: CN
Inventors: 俞泰邦
Original assignee: Kinshi Japan K K
Current assignee: Kinshi Japan K K
Priority date: 1988-10-12
Filing date: 1988-10-12
Publication date: 1992-10-07
Also published as: CN1041818A

Abstract

The present invention relates to an ultrasonic combustion device for combusting water added liquid fuel, which mainly comprises a vaporizer 1 provided with a cooling sleeve 6 and a burner 4. Barrel type water supply tanks and fuel supply tanks are arranged in atomizers, and a blower 26 allocates air to the atomizers and the cooling sleeve through branch pipe joints 18. Water and fuel are atomized by oscillators in the corresponding atomizers and are obliquely sprayed to a vaporizing cavity from a certain angle, and therefore, optimal combustion mixtures are obtained in the burner 4. The addition of water has a wetting function in combustion processes.

Description

Ultrasonic combustion apparatus for burning water-added liquid fuel

The burner of the relevant burning water-added liquid fuel of the present invention, especially relevant with a kind of ultrasonic combustion apparatus of burning water-added liquid fuel, it is used for heating system makes fuel completing combustion, and in burning fuel is played humidification.

Add water in the liquid fuel within physics and the chemical action of improving fuel arranged.Physical action sprays into to a vaporizer for when oil droplet and water droplet pass through from ultrasonic ultrasonic delay line memory, and the initial combustion heat expands water droplet rapidly, causes oil droplet to break, and is decomposed into particulate.This phenomenon is called " microburst " or " secondary-atomizing ".Further the fuel particle of atomizing has increased the surface that fuel contacts with air widely, thereby improves combustibility, reduces carbon monoxide and oil smoke, promptly reduces unburnt fuel, thereby improves the efficient of fuel.

And nitrogen oxide and oil smoke are suppressed

Reaction is heat absorbing type, and therefore, the nitrogen oxide that produces because of local heat in the burning starting stage is suppressed, and carbon monoxide that is produced and unburnt fuel reaction, further suppresses the generation of nitrogen oxide.

The variation of water is as follows during burning:

Carbon monoxide changes as follows:

Reaction in the formula (b) is the most common, and the reaction of formula (c) is extremely slow and rare, can give ignorance.Formula (a) reaction produces hydroxyl groups, and formula (b) reaction is quickened, thereby suppresses the generation of carbon monoxide.The hydroxyl groups that reaction (a) produces prevents the generation of oil smoke crystal grain, and suppresses the polymerization and the carbon karyogenesis of hydrocarbon, thereby reduces the generation of soot particles.

Change the heat that produces in the process of carbon dioxide at carbon monoxide, greater than the required heat of HO reduction, thereby flame temperature is higher than the flame temperature of the conventional fuel that only burns.In addition, when air supply in evaporimeter, the particle water of atomizing adds primary air and adds auxiliary air and collide the phase counterdiffusion mutually with the fuel particle of atomizing, improves the mixed effect between them, thereby makes fuel reach stable and burning completely, energy savings.

US Patent specification US4165961 discloses a kind of burner that has the ultrasonic oscillator combustion of liquid fuel, heart position is provided with oscillator therein, the front end of oscillator is provided with atomization surface, air blast provides secondary wind by the secondary ventilating ducting that is made of inside and outside shell, and providing wind one time by the aperture on the inner casing, the shell end face is connected with combustion cylinder etc.This burner is by the Langevin type, and the ultrasonic oscillator that promptly comprises the crystal oscillation oscillator constitutes, and its invention task is that spraying is stable when making liquid fuel combustion, to improve its efficiency of combustion.The liquid fuel of this device is supplied with ultrasonic oscillator by means of screw pump, makes that the air with burning usefulness is ejected in the combustion chamber after its micronize, at last by the electrode bar ignition.

Task of the present invention is the above-mentioned type burner is further developed, thereby a kind of ultrasonic combustion apparatus of burning water-added liquid fuel is proposed, this device changes into particulate with liquid fuel and water smoke respectively with ultrasonic oscillator, be ejected into formation " secondary-atomizing " in the vaporizer together with combustion air, make it be mixed into oil droplet+combustion air and water droplet+combustion air, burn within it then.Add water and help to improve efficiency of combustion and the harmful substance that reduces in the waste gas, this respect has been made detailed description when beginning.

The technical measures that solve above-mentioned task are, make this device comprise a major part, a vaporizer is wherein arranged, a burner that is installed in this vaporizer top, vaporizer is with a coolant jacket, also comprise an air blast that is connected with coolant jacket with the secondary air supply pipe, configuration and connection atomizer between major part and air blast, the air supply pipe of air blast is connected with branch pipe connection, this joint has three imports, be respectively equipped with air-flow control screw regulator on it, one of them import is connected with air hose, be connected with coolant jacket again, two imports are connected with an air supply pipe respectively, to water and fuel atomizer air supply, all be arranged to demountable structure respectively, be connected with nozzle by supply pipe with being connected of cartridge type supply flume and fuel feeding channel, nozzle is contained on the wall of vaporizer with center line angle and angle of declination and ladder height, supplies with atomized water and atomized fuel to vaporizer.

The present invention is further illustrated by means of embodiment shown in the drawings now.Wherein:

Fig. 1 is the integrally-built general profile chart of the present invention,

Fig. 2 (ka) is the horizontal cross of overlooking of vaporizer of the present invention,

Fig. 2 (na) and (da) be will the invention vaporizer vertical sectional view,

Fig. 3 is the detail drawing of branch pipe connection of the present invention.

As shown in Figure 1, a top that is wound with the vaporizer 1 of pre-thermoelectric element 2 is installed a burner 4 and one and is led straight plate 5, at its downside a thermistor 9 that detects preheat temperature and keep predetermined temperature is set, is provided with the respective nozzle 8 and 10 of ultrasonic ultrasonic

delay line memory

21 and 22 in both sides.Vaporizer 1 also has a cover 6 around its periphery wall, 3, one inlet union 7 of igniter plug is installed on it passes from wall, is connected with secondary air supply pipe 14.Be respectively applied for the ultrasonic ultrasonic delay line memory part 21 of water and liquid fuel; 22; its structure is to be arranged to have the cartridge type of predetermined volume to supply with groove 11 with one; 12 are removably mounted on it; the bottom of corresponding atomizer part is provided with protection column jecket 19,24, lays respectively through column jecket 19; water that hole on 24 downsides enters and the ultrasonic oscillator of

liquid fuel atomization

20,23.

The collecting chamber of atomizer part is respectively equipped with protuberance 21a on its base plate, 22a answers back to by their being installed the outlet valve that comes in position and supply with groove 11,12.Collecting chamber also has rubber installed part 16 respectively, and its upper end is installed with the supply groove securely, is provided with air duct, and air is entered from the outside.

Air supply pipe

30,32 and water and fuel

particle supply pipe

13,15 respectively have an end by clip and

corresponding atomizer part

21,22 avris and top connect, the other end of an

air supply pipe

30,32 and have air-flow control screw regulator 17, the import 30 of branch pipe connection 18 17 " '; 32 ' connect the other end of water and

fuel conduit

13,15; connect with nozzle 8,10 respectively.

The air-flow control in the upper end 14 of branch pipe connection 18 ' be provided with screw regulator 17 ', this end is connected with secondary air supply pipe 14, the import 7 of the other end of this pipe and coolant jacket 6 is connected, the lower end of branch pipe connection 18, by tracheae 26 ' be connected, also can add an air-flow control screw regulator in 25 places at the position with air blast 26.The cartridge type of water and fuel is supplied with groove 11,12 and is had valve 11a and 12a, will supply with the groove port closing accordingly with spring force, and with the protuberance 21a of

atomizer part

21,22, when 22a upwards pushed away, outlet was opened.

The operation of description said structure.During the (not shown) that closes a switch energising, preheater 2 is heated to 230-240 ℃ with vaporizer 1, at this moment by control thermistor 9, keeps this temperature of vaporizer.After preheating finishes, air blast 26 startings (doing prerinse).About 10-20 is after second in the prerinse running, and

atomizer

21 and 22 and common ignition transformer (not shown) energisings make known plug ignition device igniting, the burning beginning.

Air blast 26 filters through cleaner 27 from the air of outside suction, distributes by branch pipe connection 18, through an air supply pipe 32, enters ultrasonic fuel atomizer 22, enters ultrasonic-wave water-atomization device 21 through an air supply pipe 30.Add primary air and fuel through the water droplet of

ultrasonic oscillator

20,23 atomizing and drip primary air and carry through

supply pipe

13 and 15 respectively, and spray into vaporizer 1 by nozzle 8,10.

The primary air that air blast 26 is supplied with removes and supplies with outside the

atomizer

21,22, also enters coolant jacket 6 by secondary air supply pipe 14 and import 7, and is with cooling vaporizer 1, before discharging with waste gas, combustion-supporting to the burner 4 of coolant jacket upside.

When nozzle 8 and 10 to a certain planar central orientation, the nozzle centerline angle is in 20 to 60 degree scopes, in Fig. 2 (ka) with Q1, Q2 represents, and downward-sloping 0 to 15 degree, in Fig. 2 (da) with angle Q3, Q4 represents, relative ladder height relation is as h1=h2 or h1=h2 * 1.1-1.25 among Fig. 2 (na), and then atomized water dropping primary air and fuel dropping primary air owing to collide and vortex, mix the best in vaporizer 1.When the (operating) water nozzle position is lower than fuel nozzle,, improved fuel consumption because the lift of the water droplet of easy vaporization has stoped under the fuel drip that does not atomize.

The fuel of obtaining like this, the mixture of water and air are vaporized at once, cause aforesaid microburst, send into burning in the burner 4 by leading straight plate 5.In said process, be attended by a part of chemical reaction and physical effect.

Branch pipe connection 18 has the branch of being trunk shape, as shown in Figure 3, which is provided with and

air supply pipe

14,30, and 32 corresponding air-flows

control screw regulators

17 ', 17,17 " base of being installed 31,28,29 can be regulated air feed according to the fuel type that uses.

By the rotating speed of revolution detector 33 detection blower motors, total air feed is regulated according to the variation of giving birth to heat in the running.

For effect of the present invention is described, the ultrasonic ultrasonic delay line memory of employing ultrasonic oscillator can be obtained and be of a size of 10 microns the fuel droplet and the atomizing of water droplet, the volumetric ratio that water adds fuel is that 0.1-0.4 is than 1, to reduce nitrogen oxide (NOx), oil smoke and carbon monoxide, improve anti-air pollution effects, and improve fuel efficiency with energy savings.And the position of nozzle and directed arrangement can obtain the effect that atomized water and fuel follow the air in eddy flow better to mix and run foul of each other.So along with the combustion stability of fuel completing combustion increases, the effect that makes fuel add the water mixing improves a lot.In addition, in combustion process, add water, humidification is arranged, thereby needn't independent humidifier be set in combustion system.

As mentioned above, the present invention with ultrasonic wave with liquid fuel and water atomization, and in pre-heat vapourizer with its mixing, improve generation and the complete combustion of fuel of heat with a device simple in structure, and obtain wettability effect, easy to use and the manipulation of this device is easy to make, and the advantage of energy savings is arranged.

Claims

1, a kind of ultrasonic combustion apparatus of burning water-added liquid fuel, comprise a ultrasonic oscillator, a combustion chamber, liquid fuel source and feeding pipe thereof, a ventilating duct, a source of the gas and a secondary ventilating ducting, it is characterized in that, this device comprises a major part, a vaporizer (1) is wherein arranged, one is installed in the burner (4) that the device top is burnt in this vaporization, vaporizer is with a coolant jacket (6), also comprise an air blast that is connected with coolant jacket with the secondary air supply pipe (26), configuration and connection atomizer (21 between major part and air blast (26), 22), the air supply pipe (26 ') of air blast (26) is connected with branch pipe connection (18), this joint (18) have import (4 ', 30 ', 32 '), be respectively equipped with air-flow control screw regulator on it, import (14 ') is connected with air hose (14), be connected with coolant jacket (6) again, import (30 ') and (32 ') respectively with an air supply pipe (30,32) connect, respectively to water and fuel atomizer (21,22) air supply, with cartridge type supply flume and fuel feeding channel (11,12) demountable structure all is arranged in connection, connect by supply pipe (13,15) and nozzle (8,10), nozzle (8,10) with the center line angle (Q1, Q2) and angle of declination (Q3, Q4) and ladder height (h1, h2) be contained on the wall of vaporizer (1), supply with atomized water and atomized fuel to vaporizer.

2, the device described in claim 1 is characterized in that, (Q1 Q2) is the 20-60 degree to the center line angle of nozzle (8,10), and (Q3 Q4) is the 0-15 degree to angle of declination, and (h1 h2) is h1=h2 to its ladder height.

3, the device described in claim 1 is characterized in that, (Q1 Q2) is the 20-60 degree to the center line angle of nozzle (8,10), and (Q3 Q4) is the 0-15 degree to angle of declination, and (h1 h2) is h1=h2 * 1.1-1.25 to its ladder height.