CN208998070U - A kind of minisize liquid burner of the porous injecting type of cylinder - Google Patents
A kind of minisize liquid burner of the porous injecting type of cylinder Download PDFInfo
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- CN208998070U CN208998070U CN201821338773.0U CN201821338773U CN208998070U CN 208998070 U CN208998070 U CN 208998070U CN 201821338773 U CN201821338773 U CN 201821338773U CN 208998070 U CN208998070 U CN 208998070U
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Abstract
The utility model relates to micro liquid fuel burners, disclose a kind of minisize liquid burner of porous injecting type of cylinder, including combustion chamber, upper sealing panel, lower sealing plate and admission line, on, lower sealing plate is used for sealed combustion chamber, the combustion chamber is provided with the first air inlet and first row port, one end of the admission line is through the inside of the first air inlet to combustion chamber, the inside of the combustion chamber is equipped with feed pipe and burner, one end of the feed pipe is located at the inside of burner, and the bottom end of the burner and the middle part of feed pipe connect, the other end of the feed pipe runs through lower sealing plate, the beneficial effect is that: increase liquid fuel surface area, mix well with air it, accelerate the evaporation of liquid fuel simultaneously, make burning being capable of stability and high efficiency progress.
Description
Technical field
The utility model relates to micro liquid fuel burners, and in particular to a kind of miniature liquid of the porous injecting type of cylinder
Volumetric combustion device.
Background technique
In recent years, based on continue to bring out micro air vehicle, Single-soldier system, micro robot and it is various just
The urgent need to power such as electronic equipment of formula is taken, most of equipment are turned to by traditional chemical cell driving to close with energy
Degree is significantly larger than the liquid hydrocarbon of lithium battery energy density for the research of the micro combustions power device of fuel, if energy
Enough make its stabilization, efficient to burn, the microminiature power device based on burning just has great competitiveness, while liquid is hydrocarbon
Product after full combustion of fuel is water and carbon dioxide, greatly reduces the pressure caused by environment, so minisize liquid fires
The object that the research and development of burner are also just paid close attention at scientific domain in recent years.
Compared to traditional combustion process, miniature scale burning, which is mainly faced with, to be increased due to face body ratio compared to conventional burners
Huge radiation loss brought by big two orders of magnitude；Secondly because geometric dimension is smaller, and chemical time is not
Changing with mass flow or combustor volume, the fuel and air mixture residence time is shorter, lead to incomplete combustion, so that
Fuel is expelled directly out with tail gas, reduces efficiency of combustion.Although liquid fuel energy density is high, the time is needed to be steamed
It sends out and mixes with air, thus also bring certain difficulty to the structure design of minisize liquid burner.Therefore, in order to
Enable the burning of liquid burner stability and high efficiency, needs to solve liquid fuel rapid evaporation and what is mixed well with air ask
Topic.
Utility model content
The purpose of this utility model is to overcome above the shortcomings of the prior art, provide a kind of porous spray of cylinder
The minisize liquid burner of formula is penetrated, is difficult to rapid steaming to solve minisize liquid burner and carry out faced liquid fuel for a long time
The problems such as hair mixes well with air.
The purpose of this utility model is realized by the following technical solution: a kind of minisize liquid combustion of the porous injecting type of cylinder
Burner, including combustion chamber, upper sealing panel, lower sealing plate, admission line and igniter, the upper sealing panel are sealed in combustion chamber
Upper end, the lower sealing plate are sealed in the lower end of combustion chamber, and the combustion chamber is provided with the first air inlet and first row port, described
One end of admission line is equipped with feed pipe and burning through the inside of the first air inlet to combustion chamber, the inside of the combustion chamber
Device, the burner include fuel column and metal grill sleeve, the metal grill sleeve bottom end opening, the metal mesh rule
Cylinder is socketed on fuel column, the top sealing of the fuel column, and the side wall of the fuel column is provided with multiple discharge holes, the fuel
The bottom end of column is fixedly connected with feed pipe, and described feed pipe one end extends to the inside of fuel column, the feed pipe with
Discharge chamber is formed between fuel column, the discharge chamber is connected to discharge hole, and the other end of the feed pipe runs through lower sealing plate,
The outer wall of the feed pipe and lower sealing plate are tightly connected, the igniter and metal grill sleeve connection, the igniter
Lead pass through upper sealing panel connect with external high pressure power supply.
Further, the admission line has spiral section, and the spiral section is socketed on the outer wall of combustion chamber, and the spiral shell
The wall surface of rotation section is closely attached on the outer wall of combustion chamber.
Further, the burner further includes porous medium layer, and the porous medium layer is closely attached on the side wall of fuel column,
And there is gap between the porous medium layer and metal grill sleeve.
Further, the surface of the metal grill sleeve is coated with catalyst layer.
Further, the combustion chamber, fuel column, feed pipe and admission line are made of stainless steel material.
It further, further include sealed outer cylinder, the sealed outer cylinder is socketed on the outside of combustion chamber, the admission line position
Between sealed outer cylinder and combustion chamber, the upper end of the sealed outer cylinder is connect with upper sealing panel, the lower end of the sealed outer cylinder with
Lower sealing plate connection, the sealed outer cylinder are provided with the second air inlet and second exhaust port, and the other end of the admission line runs through
Second air inlet.
Further, first air inlet is set to the side wall lower ends of combustion chamber, and the first row port is set to combustion
The sidewall upper of room is burnt, second air inlet is set to the sidewall upper of sealed outer cylinder, and the second exhaust port is set to close
The side wall lower ends of outer cylinder are sealed, the first row port and second exhaust port are respectively arranged at the two sides of burner central axes.
Further, the sealed outer cylinder is made of silicon carbide, ceramics or asbestos；The upper sealing panel is by silicon carbide, pottery
Porcelain or asbestos are made；The lower sealing plate is made of silicon carbide, ceramics or asbestos.
Further, exhaust pipe is installed, the exhaust pipe uses stainless steel, ceramics, carbonization in second exhaust port
Silicon, silica or phosphatization silicon are made.
A kind of combustion method of the minisize liquid burner of the porous injecting type of cylinder, includes the following steps:
Liquid fuel is entered in fuel column by Miniature injection pump through feed pipe, and is sprayed from the discharge hole of fuel column side wall
It penetrates, after porous medium layer disperses, heat absorption evaporation；Oxidant passes through air inlet pipe after pressure reducing valve depressurizes in high pressure gas cylinder
Road enters combustion chamber and forms eddy flow rising；Igniter is opened, igniter lights liquid fuel, in eddy flow and metal mesh rule
Under the accumulation of heat and heat release of cylinder, liquid fuel rapid evaporation, and mix well with air, so that flame stabilization depends on metal grill
Sleeve；Exhaust gas after burning is discharged by the first row port of combustion chamber, and exhaust gas flows through between combustion chamber and sealed outer cylinder, and preheats
Oxidant in admission line, last exhaust gas are discharged from second exhaust port.
The utility model has the advantage that compared with the existing technology
1, the utility model forms it into liquid by using the structure for being provided with multiple discharge holes on the side wall of fuel column
Fuel outlet, so that liquid fuel can be more dispersedly spouting around under same traffic, thus liquid fuel
Surface area increase, can be more sufficiently mixed with air, while accelerating the evaporation of liquid fuel, make burning can stability and high efficiency into
Row；Equipped with igniter, keeps ignition process more convenient, meet actual demands of engineering.
2, porous medium layer is equipped in the utility model, when the liquid fuel ejected from fuel column passes through porous media
When layer, liquid fuel is further refined, and increases the evaporation surface of liquid fuel, is conducive to the dispersion of liquid carbon hydrogen fuel
And heat absorption evaporation.
3, metal grill sleeve is arranged in porous medium layer periphery in the utility model, and sprays catalyst on its surface, has
Conducive to the stability for keeping combustion flame and chemical reaction velocity is improved, is conducive to improve efficiency of combustion.
4, the admission line in the utility model have spiral section, spiral section be bonded outer wall of combustion chamber, the one of admission line
End penetrates combustion chamber from bottom of combustion chamber along wall surface, so that oxidant forms eddy flow in a combustion chamber, fires oxidant and liquid
Material mixing is more abundant, increases the time of contact of oxidant and liquid fuel.
5, the combustion chamber in the utility model is equipped with first row port, and sealed outer cylinder is equipped with second exhaust port, and burning is produced
Raw exhaust gas is flowed through between combustion chamber and sealed outer cylinder by first row port, to exchange heat with admission line, so that air inlet pipe
Oxidant in road is preheated, and can be combustion chamber heat preservation using waste heat, reduces radiation loss.
6, the utility model is simple and compact for structure, and components are less, can be realized the substantially stabilized burning of liquid, high-efficient
And energy conservation, it has a extensive future.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the minisize liquid burner of the porous injecting type of cylinder in the utility model embodiment 1；
Fig. 2 is in Fig. 1 along the cross-sectional view in the direction A-A；
Fig. 3 is the structural schematic diagram of the minisize liquid burner of the porous injecting type of cylinder in the utility model embodiment 2；
Fig. 4 is in Fig. 2 along the cross-sectional view in the direction B-B；
Fig. 5 is fuel column and the structural schematic diagram outside feed pipe in the utility model；
Fig. 6 is fuel column and the structural schematic diagram inside feed pipe in the utility model；
In figure, 1, sealed outer cylinder；2, upper sealing panel；3, lower sealing plate；4, igniter；5, combustion chamber；6, admission line；7,
Second air inlet；8, second exhaust port；9, the first air inlet；10, first row port；11, fuel column；12, metal grill sleeve；
13, feed pipe；14, porous medium layer；15, exhaust pipe；16, discharge chamber.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Embodiment 1:
As shown in Figure 1, Figure 2, Fig. 5, a kind of minisize liquid burner of the porous injecting type of cylinder shown in fig. 6, including combustion chamber
5, upper sealing panel 2, lower sealing plate 3, admission line 6 and igniter 4, the upper sealing panel 2 are sealed in the upper end of combustion chamber 5, institute
The lower end that lower sealing plate 3 is sealed in combustion chamber 5 is stated, the combustion chamber 5 is provided with the first air inlet 9 and first row port 10, described
One end of admission line 6 is equipped with feed pipe 13 through the inside of the first air inlet 9 to combustion chamber 5, the inside of the combustion chamber 5
And burner, the burner include fuel column 11 and metal grill sleeve 12,12 bottom end opening of metal grill sleeve, institute
It states metal grill sleeve 12 and is socketed on fuel column 11, the top sealing of the fuel column 11, and the side wall of the fuel column 11 is opened
There are multiple discharge holes, the bottom end of the fuel column 11 is fixedly connected with feed pipe 13, and described 13 one end of feed pipe extends to
The inside of fuel column 11 forms discharge chamber 16, the discharge chamber 16 and discharge hole between the feed pipe 13 and fuel column 11
Connection, the other end of the feed pipe 13 run through lower sealing plate 3, and the outer wall of the feed pipe 13 and lower sealing plate 3 seal
Connection, the igniter 4 are connect with metal grill sleeve 12, and the lead of the igniter 4 passes through upper sealing panel 2 and external high pressure
Power supply connection.Wherein, the side wall of fuel column 11 is provided with multiple discharge holes, so that liquid fuel can be more under same traffic
It is dispersedly spouting around, so that liquid fuel full combustion on metal grill sleeve 12, improves fuel availability.Combustion
Burner is fixed on the inside of combustion chamber 5 by feed pipe 13, the other end of feed pipe 13 through lower sealing plate 3, and
Feed pipe 13 is fixedly connected with lower sealing plate 3, and the bottom end of fuel column 11 is fixedly connected with the outer wall of feed pipe 13, it may be assumed that logical
13 burner of feed pipe is crossed to be fixed on the inside of combustion chamber 5 and be located on the central axes of combustion chamber 5.
Liquid fuel is entered in fuel column 11 by Miniature injection pump through feed pipe 13, and liquid fuel is in Miniature injection pump
Promotion under hit fuel column 11 top inner wall pass through 11 side wall of fuel column so that liquid fuel enters in discharge chamber 16
Discharge hole discharge, the oxidant that high pressure gas cylinder (not shown) comes out are logical according to required flow after pressure reducing valve decompression
Enter among combustion chamber 5 after entering admission line 6, lighted a fire using igniter 4, by controlling different oxidizer flow rates and leading to
Enter the liquid fuel flow in feed pipe 13, the stability and high efficiency burning of the liquid fuel under different equivalent proportions may be implemented.Its
Middle liquid fuel includes liquid carbon hydrogen fuel, and oxidant includes air.
The admission line 6 has spiral section, and the spiral section is socketed on the outer wall of combustion chamber 5, and the spiral section
Wall surface is closely attached on the outer wall of combustion chamber 5.Wherein, the cross section of admission line 6 is circle, is fitted closely in the outer wall of combustion chamber 5,
The circle number that its spiral section is wound on 5 outer wall of combustion chamber is three circles.
12 surface of metal grill sleeve is coated with catalyst layer, and used catalyst includes Cu-Ni, Pt-Ni or Pt-Cu.
Catalyst layer is sprayed, the stability for keeping combustion flame is conducive to and improves chemical reaction velocity, is conducive to improve efficiency of combustion.
The combustion chamber 5, fuel column 11, feed pipe 13 and admission line 6 are all made of stainless steel material and are made.
It further include sealed outer cylinder 1, the sealed outer cylinder 1 is socketed on the outside of combustion chamber 5, and the admission line 6 is located at close
Seal between outer cylinder 1 and combustion chamber 5, the upper end of the sealed outer cylinder 1 is connect with upper sealing panel 2, the lower end of the sealed outer cylinder 1 and
Lower sealing plate 3 connects, and the sealed outer cylinder 1 is provided with the second air inlet 7 and second exhaust port 8, the other end of the admission line 6
Through the second air inlet 7.
First air inlet 9 is set to the side wall lower ends of combustion chamber 5, and the first row port 10 is set to combustion chamber 5
Sidewall upper, second air inlet 7 is set to the sidewall upper of sealed outer cylinder 1, and the second exhaust port 8 is set to sealing
The side wall lower ends of outer cylinder 1, the first row port 10 are respectively arranged at the two sides of burner central axes with second exhaust port 8.Its
In the second air inlet 7 be parallel near burner top, one end of admission line 6 is adjacent to the outer wall of combustion chamber 5 and through first
Air inlet 9 to combustion chamber 5 inside；Combustion chamber 5 opens up the first row port 10 that diameter is 3mm, sealing at the 4mm of its top
The side wall lower ends of outer cylinder 1 open up the second exhaust port 8 that diameter is 3mm, and first row port 10 and second exhaust port 8 are located at combustion
The two sides of burner central axes, in this way setting be in order to allow after burning the exhaust gas that generates between combustion chamber 5 and sealed outer cylinder 1 sufficiently
It stops, improves the heat utilization efficiency of exhaust gas, make heating by the exhaust gases oxidant, and keep the temperature to combustion chamber 5.
The sealed outer cylinder 1 is made of silicon carbide, ceramics or asbestos；The upper sealing panel 2 is by silicon carbide, ceramics or asbestos
It is made；It is heat-resisting material that the above material, which is made, by silicon carbide, ceramics or asbestos in the lower sealing plate 3.
Exhaust pipe 15 is installed, the exhaust pipe 15 uses stainless steel, ceramics, silicon carbide, oxygen in second exhaust port 8
SiClx or phosphatization silicon are made.
Minisize liquid combustor external in the utility model is cylindrical, whole height 46mm, sealed outer cylinder 1
Internal diameter is 43mm, and outer diameter 50mm, the internal diameter of combustion chamber 5 is 33mm, outer diameter 35mm, the height of combustion chamber 5 and sealed outer cylinder
It is 40mm, 2 outer diameter 55mm of upper sealing panel, with a thickness of 3.5mm, lower 3 outer diameter of sealing plate is 55mm, with a thickness of 2.5mm.Air inlet pipe
The outer diameter in road 6 is 3mm, internal diameter 2mm, as shown in Fig. 2, 12 upper end of metal grill sleeve and 11 top of fuel column are closely coupled,
The upper end of fuel column 11 is used to fix and support metal grill sleeve 12, by soldering (Fig. 2 intermediate cam shape thin slice).Metal
Grid sleeve 12 is cyclic structure, is socketed on fuel column 11, high with a thickness of 0.5mm, internal diameter 12mm, outer diameter 13mm
20mm, 12 hole density of metal grill sleeve are 100 holes/cm2.As shown in figure 3, the height of feed pipe 13 is 37mm, feed pipe
The internal diameter in road 13 is 3mm, and the internal diameter of fuel column 11 is 4.7mm, and it is the small of 0.15mm that the cylinder of fuel column 11, which is equipped with radius,
Hole proper alignment, density are about 170 holes/cm2。
Embodiment 2:
The present embodiment further includes following technical characteristic on the basis of embodiment 1:
As shown in figures 3 to 6, the burner further includes porous medium layer 14, and the porous medium layer 14 is closely attached on fuel
The side wall of column 11, and there is gap between the porous medium layer 14 and metal grill sleeve 12.Metal grill sleeve 12 and more
Gap between hole dielectric layer 14 is 2mm, and porous medium layer 14 is attached at the lateral wall of fuel column 11, and porous medium layer 14 is
Porous structure, liquid fuel is sprayed from the discharge hole of fuel column 11 flows through 14 decentralized gasification of porous medium layer, porous medium layer
14 increase the evaporation surface of liquid fuel, are conducive to the dispersion and heat absorption evaporation of liquid fuel.Porous medium layer 14 uses
Foamed aluminium or ceramic material are made, porous medium layer 14 with a thickness of 2mm, internal diameter 5mm, outer diameter 9mm, high 20mm.
A kind of combustion method of the minisize liquid burner of the porous injecting type of cylinder, includes the following steps:
Liquid fuel enters in fuel column 11 through feed pipe 13, and liquid fuel enters discharge chamber 16 and from 11 side of fuel column
The discharge hole of wall is spouting, after the dispersion of porous medium layer 14, heat absorption evaporation；Meanwhile oxidant by admission line 6 into
Enter in combustion chamber 5, forms eddy flow and rise；Igniter 4 is opened, igniter 4 lights liquid fuel, in cyclonic action and metal mesh
Under the accumulation of heat and heat release of rule cylinder 12, liquid fuel rapid evaporation, and mix well with air, while flame stabilization is depended on
On metal grill sleeve 12；Exhaust gas after burning is discharged by the first row port 10 of combustion chamber 5, and exhaust gas flows through combustion chamber 5
Between sealed outer cylinder 1, admission line 6 is heated using exhaust gas, the oxidant in pre-heating intaking pipeline 6, and reduce in combustion chamber 5
Thermal loss, last exhaust gas from second exhaust port 8 exhaust pipe 15 be discharged, realize liquid fuel in micro combustions room
Interior stabilization, full combustion.
Above-mentioned specific embodiment is the preferred embodiment of the utility model, can not be defined to the utility model,
Other any changes made without departing from the technical solution of the utility model or other equivalent substitute modes, are included in
Within the protection scope of the utility model.
Claims (8)
1. a kind of minisize liquid burner of the porous injecting type of cylinder, it is characterised in that: including combustion chamber, upper sealing panel, under it is close
Sealing plate, admission line and igniter, the upper sealing panel are sealed in the upper end of combustion chamber, and the lower sealing plate is sealed in combustion chamber
Lower end, the combustion chamber is provided with the first air inlet and first row port, and the first air inlet is run through in one end of the admission line
To the inside of combustion chamber, the inside of the combustion chamber is equipped with feed pipe and burner, and the burner includes fuel column and gold
Belong to grid sleeve, the metal grill sleeve bottom end opening, the metal grill sleeve is socketed on fuel column, the fuel column
Top sealing, and the side wall of the fuel column is provided with multiple discharge holes, the bottom end of the fuel column is connect with feed pipe, described
Feed pipe one end extends to the inside of fuel column, and discharge chamber, the discharge chamber are formed between the feed pipe and fuel column
It is connected to discharge hole, the other end of the feed pipe runs through lower sealing plate, and the outer wall of the feed pipe and lower sealing plate are close
Envelope connection, the igniter and metal grill sleeve connection, the lead of the igniter pass through upper sealing panel and external high pressure electricity
Source connection.
2. the minisize liquid burner of the porous injecting type of cylinder according to claim 1, it is characterised in that: the air inlet pipe
Road has spiral section, and the spiral section is socketed on the outer wall of combustion chamber, and the wall surface of the spiral section is closely attached on the outer of combustion chamber
Wall.
3. the minisize liquid burner of the porous injecting type of cylinder according to claim 1, it is characterised in that: the burner
It further include porous medium layer, the porous medium layer is closely attached on the side wall of fuel column, and the porous medium layer and metal grill
There is gap between sleeve.
4. the minisize liquid burner of the porous injecting type of cylinder according to claim 1, it is characterised in that: the metal mesh
The surface of rule cylinder is coated with catalyst layer.
5. the minisize liquid burner of the porous injecting type of cylinder according to claim 1, it is characterised in that: the burning
Room, fuel column, feed pipe and admission line are made of stainless steel material.
6. the minisize liquid burner of the porous injecting type of cylinder according to claim 1, it is characterised in that: further include sealing
Outer cylinder, the sealed outer cylinder are socketed on the outside of combustion chamber, and the admission line is described between sealed outer cylinder and combustion chamber
The upper end of sealed outer cylinder is connect with upper sealing panel, and the lower end of the sealed outer cylinder is connect with lower sealing plate, and the sealed outer cylinder is opened
There are the second air inlet and second exhaust port, the other end of the admission line runs through the second air inlet.
7. the minisize liquid burner of the porous injecting type of cylinder according to claim 6, it is characterised in that: described first into
Port is set to the side wall lower ends of combustion chamber, and the first row port is set to the sidewall upper of combustion chamber, second air inlet
Mouth is set to the sidewall upper of sealed outer cylinder, and the second exhaust port is set to the side wall lower ends of sealed outer cylinder, the first row
Port and second exhaust port are respectively arranged at the two sides of burner central axes.
8. the minisize liquid burner of the porous injecting type of cylinder according to claim 6, it is characterised in that: outside the sealing
Cylinder is made of silicon carbide, ceramics or asbestos；The upper sealing panel is made of silicon carbide, ceramics or asbestos；The lower sealing plate by
Silicon carbide, ceramics or asbestos are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338773.0U CN208998070U (en) | 2018-08-20 | 2018-08-20 | A kind of minisize liquid burner of the porous injecting type of cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338773.0U CN208998070U (en) | 2018-08-20 | 2018-08-20 | A kind of minisize liquid burner of the porous injecting type of cylinder |
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| Publication Number | Publication Date |
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| CN208998070U true CN208998070U (en) | 2019-06-18 |
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ID=66798691
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821338773.0U Active CN208998070U (en) | 2018-08-20 | 2018-08-20 | A kind of minisize liquid burner of the porous injecting type of cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237470A (en) * | 2018-08-20 | 2019-01-18 | 华南理工大学 | A kind of the minisize liquid burner and its combustion method of the porous injecting type of cylinder |
-
2018
- 2018-08-20 CN CN201821338773.0U patent/CN208998070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237470A (en) * | 2018-08-20 | 2019-01-18 | 华南理工大学 | A kind of the minisize liquid burner and its combustion method of the porous injecting type of cylinder |
| CN109237470B (en) * | 2018-08-20 | 2024-02-06 | 华南理工大学 | Cylindrical porous jet type miniature liquid burner and combustion method thereof |
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