CN202813365U - Electric spraying liquid fuel combustor - Google Patents
Electric spraying liquid fuel combustor Download PDFInfo
- Publication number
- CN202813365U CN202813365U CN201220462168.0U CN201220462168U CN202813365U CN 202813365 U CN202813365 U CN 202813365U CN 201220462168 U CN201220462168 U CN 201220462168U CN 202813365 U CN202813365 U CN 202813365U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- liquid fuel
- grid
- feature
- doffing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Spray-Type Burners (AREA)
Abstract
The utility model discloses an electric spraying liquid fuel combustor which comprises an upper cylinder, a middle cylinder, a lower cylinder and an igniter, wherein a liquid fuel nozzle is arranged in the lower cylinder; a grid is arranged between the upper cylinder and the middle cylinder; an igniting needle of the igniter penetrates through a cylinder wall of the upper cylinder and is arranged above the grid in the upper cylinder; an annular electrode is arranged between the middle cylinder and the lower cylinder; a strong electric field area is formed in the area between the grid and the annular electrode; after the liquid fuel is sprayed from the liquid fuel nozzle, the charging is carried out in the strong electric field area; when a coulomb force endured by the liquid fuel is more than the surface tension of the liquid fuel, the liquid fuel is crushed and is dispersed into countless small drops; the small drops are captured by the grid connected with a cathode and are combusted on the upper surface of the grid; the diffusion property of the liquid fuel is enhanced; and the combustion reaction is more sufficient and the flame stability is better.
Description
Technical field
The utility model relates to liquid-fuel burner, particularly a kind of electron spray liquid-fuel burner.
Background technology
Along with the development of microelectromechanical systems MEMS (micro electronic mechanical system) technology, its power supply and power set become the commanding elevation of the MEMS overall situation.Meanwhile the minute yardstick Theory of Combustion is arisen at the historic moment, this burning has energy density height (be about conventional batteries 20～75 times), the characteristics such as burning yardstick little (being generally mm, μ m rank), so the MEMS based on the minute yardstick burning has larger advantage than traditional chemical cell power supply mode, can be used as the energy supplying system of micro-satellite, minute vehicle, mini mobile equipment, miniature scientific instrument etc.
Yet, when miniature yardstick burning is dwindled than the traditional combustion size, but produced more technical barrier.For example the surface to volume ratio of the combustion chamber of conventional burners is generally 3～5m
-1, and the surface to volume ratio of micro-scale burner is 500m
-1, large surface to volume ratio is all the more obvious by the impact of heat loss, reduces the temperature of flame stabilizing zone, so that the chemical time increase, even fray-out of flame occurs, affect the fuel fire limit.At present, many research institutions are continuous in minute yardstick combustion field achievement both at home and abroad, but major part all concentrates on premixed combustion or the catalytic combustion of gaseous fuel, and are less about the research of liquid fuel.Than gaseous fuel, the density of liquid fuel is larger, and reserves are larger in the equal volume, be beneficial to sustained combustion, and security are better, and it is more convenient to store transportation, and energy density is higher, therefore is more suitable for being applied to micro-energy resource system.The employing diffusion combustion mode of most of liquid fuel, first fully heat absorption evaporation, and then mixes with oxidant and to carry out homogeneous combustion, this needs the time that grow.Fuel after the gasification was directly proportional with volume and the pressure ratio of combustion chamber in the holdup time of combustion chamber, and in the microburner of low-pressure ratio, little volume, this condition is difficult to satisfy, and caused the fuel unburned fully to discharge the combustion chamber, reduced efficiency of combustion.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of prior art, and a kind of electron spray liquid-fuel burner is provided, and can realize the stable burning that continues of liquid fuel under the tiny flow quantity, thereby the diffusion of forced fluid fluid fuel improves efficiency of combustion
The utility model is achieved through the following technical solutions:
A kind of electron spray liquid-fuel burner, comprise top cylinder, middle cylinder, doffing, igniter, be provided with liquid fuel nozzle in doffing, be provided with grid between described top cylinder and the middle cylinder, the barrel that the ignition electrode of igniter runs through top cylinder places the top of the grid in the top cylinder; Between middle cylinder and doffing, be provided with annular electrode.
Described liquid fuel nozzle links to each other with high-voltage DC power supply is anodal, and described annular electrode is connected described grid ground connection with another high-voltage DC power supply is anodal.
Described liquid fuel nozzle is made of several capillaries.
Described liquid fuel jet pipe, annular electrode and grid are made by metal material.
Described top cylinder, middle cylinder and doffing are bolted.
Described top cylinder, middle cylinder and doffing all adopt ceramic material to make, such as in carborundum, phosphatization silicon or the silicon nitride any one.
The cross section of described top cylinder, grid and middle cylinder is circular cross-section.
The utility model has the following advantages compared with prior art:
(1) zone between grid and the annular electrode forms strong electric field region, and liquid fuel charges in this strong electric field region after being sprayed by liquid fuel nozzle; When the suffered Coulomb force of liquid fuel is capillary greater than liquid fuel, liquid fuel generation Fragmentation Phenomena, be dispersed into countless droplets, by catching with the grid of ground connection and burning at the grid upper surface, strengthened the diffusion property of liquid fuel, made that combustion reaction is more abundant, flame holding is better.
The advantages such as (2) the utility model igniting is easy, inflammability limit is wide are particularly suitable for being applied to the minute yardstick dynamical system; Combustion system is the diffusion combustion of a large amount of fine droplets, compares with the burner of premixed combustion, and adaptability and practicality on engineering are stronger.
(3) top cylinder, middle cylinder and doffing adopt ceramic material, and both firm insulation effect has reduced again the radiation loss of burner, has further improved flame holding and efficiency of combustion.
(4) the utility model technological means is simple and easy to do, has that quality is light, volume is little, can realize the batch production of small processing and factory, has broad application prospects.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the partial structurtes schematic diagram at doffing air intlet place among Fig. 1.
Fig. 3 is the partial structurtes schematic diagram at Fig. 1 grid place.
The specific embodiment
Below in conjunction with specific embodiment the utility model is done further concrete detailed description the in detail.
Embodiment
Such as Fig. 1～shown in Figure 3, the utility model electron spray liquid-fuel burner, comprise top cylinder 1, middle cylinder 5, doffing 8, igniter 3, in doffing 8, be provided with liquid fuel nozzle 7, be provided with grid 2 between top cylinder 1 and the middle cylinder 5, the barrel that the ignition electrode 4 of igniter 3 runs through top cylinder 5 places the top of the grid 2 in the top cylinder 5; Between middle cylinder 5 and doffing 8, be provided with annular electrode 6.
Described liquid fuel nozzle 7 is (not shown with high-voltage DC power supply, the voltage of dc source is 4.5kV) anodal linking to each other, described annular electrode 6 connects described grid 2 ground connection with another high-voltage DC power supply (not shown, the voltage of dc source is 2kV) is anodal.
Described liquid fuel jet pipe 7, annular electrode 6 and grid 2 are made by metal material.
Described top cylinder 1, middle cylinder 5 and doffing 8 are bolted, and annular electrode 6 and grid 2 are fixed on joining place.Contact-making surface can be processed through roughening between top cylinder 1, middle cylinder 5 and the doffing 8, is convenient to fix.
Igniter 3 is selected ignition, and the ignition electrode 4(that produces electric arc is plain conductor) the end and the distance of grid 2 be 2mm.
Described top cylinder 1, middle cylinder 5 and doffing 8 all adopt ceramic material to make, such as the aluminosilicate ceramic material.Also can adopt other ceramic materials, such as carborundum, phosphatization silicon or silicon nitride etc.
The cross section of described top cylinder 1, grid 2 and middle cylinder 5 is circular cross-section.
The internal diameter of top cylinder 1, grid 2 and middle cylinder 5 is respectively 7mm, wall thickness 0.5mm; Top cylinder 1 high 15mm wherein, middle cylinder 5 high 5mm, doffing 8 high 30mm.
During work, form the fluerics between liquid fuel nozzle 7 and the annular electrode 6, this moment, Fragmentation Phenomena did not occur in fuel.The jet of liquid fuel is through beginning to break the formation drop behind the annular electrode 6.A large amount of small liquid fuel droplets particles are finally caught by grid 2.Air 10 flows into from the air intake 9 of doffing 8 bottoms, and air 10 arrives grid 2 through doffing 8 and middle cylinder 5, realizes the diffusion combustion of liquid fuel (being in the top cylinder 1) efficient stable above grid 2 by the igniting of igniter 3.
As mentioned above, just can realize preferably the utility model.
Above-described embodiment only is the better embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other are any not to deviate from change, the modification done under Spirit Essence of the present utility model and the principle, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (8)
1. electron spray liquid-fuel burner, comprise top cylinder, middle cylinder, doffing, igniter, be provided with liquid fuel nozzle in doffing, its feature is being, be provided with grid between top cylinder and the middle cylinder, the barrel that the ignition electrode of igniter runs through top cylinder places the top of the grid in the top cylinder; Between middle cylinder and doffing, be provided with annular electrode.
2. electron spray liquid-fuel burner according to claim 1, its feature be, described liquid fuel nozzle links to each other with high-voltage DC power supply is anodal, and described annular electrode is connected described grid ground connection with another high-voltage DC power supply positive pole.
3. electron spray liquid-fuel burner according to claim 2, its feature is being that liquid fuel nozzle is made of several capillaries.
4. each described electron spray liquid-fuel burner according to claim 1～3, its feature is being that described liquid fuel jet pipe, annular electrode and grid are made by metal material.
5. electron spray liquid-fuel burner according to claim 4, its feature are being that described top cylinder, middle cylinder and doffing are bolted.
6. electron spray liquid-fuel burner according to claim 4, its feature are being that described top cylinder, middle cylinder and doffing all adopt ceramic material to make.
7. electron spray liquid-fuel burner according to claim 6, its feature is being that described ceramic material is any one in carborundum, phosphatization silicon or the silicon nitride.
8. electron spray liquid-fuel burner according to claim 4, its feature are being that the cross section of described top cylinder, grid and middle cylinder is circular cross-section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220462168.0U CN202813365U (en) | 2012-09-11 | 2012-09-11 | Electric spraying liquid fuel combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220462168.0U CN202813365U (en) | 2012-09-11 | 2012-09-11 | Electric spraying liquid fuel combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202813365U true CN202813365U (en) | 2013-03-20 |
Family
ID=47872230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220462168.0U Expired - Lifetime CN202813365U (en) | 2012-09-11 | 2012-09-11 | Electric spraying liquid fuel combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202813365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878555A (en) * | 2012-09-11 | 2013-01-16 | 华南理工大学 | Electrospray liquid fuel combustor |
-
2012
- 2012-09-11 CN CN201220462168.0U patent/CN202813365U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878555A (en) * | 2012-09-11 | 2013-01-16 | 华南理工大学 | Electrospray liquid fuel combustor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102878555A (en) | Electrospray liquid fuel combustor | |
| CN102913365B (en) | Annular discharge based transient state plasma igniter | |
| CN107218623B (en) | A kind of sliding arc auxiliary combustion equipment generating atmospheric non-equilibrium plasma | |
| CN101852432B (en) | Heat regenerative liquid fuel micro-burner | |
| CN102656953A (en) | Apparatus for generating complex plasma | |
| CN109310003B (en) | Large-scale efficient combustion-supporting device for coaxial resonance microwave discharge plasma | |
| CN110440291A (en) | Using the plasma fuel atomizer and control method of double mode excitation | |
| CN101666497B (en) | Micro-combustion equipment controlling air flow by using ionic wind | |
| CN201568964U (en) | Micro-combustor adopting applied electric field | |
| CN108151062B (en) | A kind of engine supersonic speed combustion chamber based on embedded central plasma torch | |
| CN202813365U (en) | Electric spraying liquid fuel combustor | |
| CN103791498A (en) | Charged spray catalytic micro burner | |
| CN104617321A (en) | Direct flame type solid oxide fuel cell device and working method thereof | |
| CN103791497A (en) | Double-grating charging mist spray minitype liquid burner | |
| CN202808722U (en) | Plasma fuel converting device | |
| CN112796892A (en) | Gas turbine plasma igniter with array type suspension electrode structure | |
| CN203718772U (en) | Electrically-charged spraying and catalyzing type micro combustor | |
| CN104566378B (en) | Burner nozzle based on electric arc discharge plasma | |
| CN102816600A (en) | Plasma fuel conversion device | |
| CN201688402U (en) | Heat regeneration type liquid fuel miniature combustor | |
| CN104748144B (en) | Gas-liquid coaxial ejection liquid fuel electrostatic atomization nozzle | |
| CN109237470B (en) | Cylindrical porous jet type miniature liquid burner and combustion method thereof | |
| CN102563693A (en) | High voltage insulation diesel spray ignition nozzle | |
| CN103244954B (en) | Plasma heavy oil burner | |
| CN202673456U (en) | Windward differential pressure type plasma ignition burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |