CN104930509B - A kind of internal baffle formula microburner - Google Patents
A kind of internal baffle formula microburner Download PDFInfo
- Publication number
- CN104930509B CN104930509B CN201510231084.4A CN201510231084A CN104930509B CN 104930509 B CN104930509 B CN 104930509B CN 201510231084 A CN201510231084 A CN 201510231084A CN 104930509 B CN104930509 B CN 104930509B
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- CN
- China
- Prior art keywords
- baffle plate
- wall
- burner
- internal
- microburner
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- 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.)
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Classifications
-
- 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
-
- 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
- F23D14/70—Baffles or like flow-disturbing devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention provides a kind of microburner of internal baffle formula, the burner is mainly made up of burner wall, middle baffle plate, wall baffle plate etc., it is in rectangular structure that it is outside, and the straight channel of inside generally square-section, the region outside baffle plate is then combustion zone；The mode of middle baffle plate and wall baffle plate interlaced arrangement, not only increase the contact area of high temperature product and burner inner wall, and the effect for improving convection transfer rate can be reached by the enhancing of internal disturbance, it might even be possible to play a part of fixed combustion flame location；These will all bring the raising of burner operation performance, it is ensured that more combustion chemistries can be converted into the radiation energy in burner outer wall face, so as to the further lifting to minitype heat optoelectronic system power density generates positive facilitation.
Description
Technical field
The invention belongs to field of energy utilization, and in particular to opening for micro-scale burner used by small power Mechatronic Systems
Hair technology, refers in particular to a kind of microburner of internal baffle formula.
Background technology
In recent years, micro power systems by its energy density is high, long working life, easy care and pollute small etc. one and be
Row advantage, and increasingly cause the concern of numerous domestic and international researchers.Such device can lead to the chemical energy of hydrocarbon fuel
The mode for crossing burning is converted to heat energy, and by various energy conversion regimes for Micro Electro Mechanical System provides power or electric energy.Make
It is a kind of typical micro-power plant, minitype heat optoelectronic system structure is more simple, and without moving component, numerous miniature
In power set, its advantage is also obvious.The system is burnt produced heat energy using hydrocarbon fuel in microburner
Burner outer wall face is heated, then high-temperature wall surface gives off the photon of certain amount, after clashing into photoelectricity pool surface, so that
Produce electric energy.
But, be limited to during micro-scale gas flow that fuel residence time is short, big surface to volume ratio causes heat loss excessive etc. because
The restriction of element, the energy conversion efficiency of the device is high not enough, in cannot still applying to Practical Project at present.As miniature hot light
The core component of electric system, the design of microburner structure not only has influence on whether internal mix gas substantially stabilized can burn,
And the temperature distribution state in burner outer wall face can be significantly affected because of the quality of combustion efficiency, and then influence the electric energy of system
Output.In view of the spatial match with photovoltaic cell, what usual such microburner was used be cylindrical type and plate
Surface structure, internal entirety are in pipe or the pattern of rectangular channel.
In recent years, it is the work performance that improves burner, researcher have devised various optimizations for its operation principle
Internal structure pattern.For example, Chinese patent CN200810123660.3 discloses a kind of height for minitype heat optoelectronic system
Effect porous media combustor, that Chinese patent CN201110132029.1 discloses a kind of double spouts based on hydrocarbon fuel is flat
It is micro- that micro combustor and Chinese patent CN201310540863.3 disclose a kind of bidirection air intake backheating type for filling porous media
Yardstick burner, various burners disclosed above, by the reasonable design on intake method, internal circulation section,
Determine to serve extension fuel residence time in degree, improve the effect of combustion efficiency under minute yardstick state, but have ignored more
Fuel chemical energy can be burned wall face absorb and wall surface temperature higher acquisition.
The content of the invention
For Shortcomings in the prior art, can not only realize that efficient stable burns the invention provides one kind, and
The flat-plate minitype burner of the of a relatively high built-in stagger arrangement baffle plate of Wall Radiation energy output quantity.
The present invention is to realize above-mentioned technical purpose by following technological means.
A kind of internal baffle formula microburner, it is characterised in that the burner include burner wall, middle baffle plate,
Wall baffle plate, inlet end and outlet side, the burner wall are divided into upper and lower two wall and front and rear two wall；
The burner is respectively arranged at two ends with inlet end and outlet side, and the burner internal is provided with middle baffle plate and wall
Baffle plate, the middle baffle plate and the wall baffle plate are solid rectangles and are parallel to each other, and the burner inner wall is provided with many
Group wall baffle plate, each group of wall baffle plate is constituted by positioned at the wall baffle plate of upper and lower two wall, the wall baffle plate of upper and lower two wall
Between form passage, be all provided between the inlet end and wall baffle plate described in first group, between wall baffle plate described in two adjacent groups
There is middle baffle plate, the middle baffle plate is fixed on two walls before and after the burner internal, the middle baffle plate and described upper and lower two
The position of the passage formed between wall wall baffle plate is corresponding.
Further, the wall baffle position positioned at upper and lower two wall of the burner is corresponding, and the wall baffle plate has five
Group.
Further, the shape of the passage for being formed between the middle baffle plate and the upper and lower two walls wall baffle plate is corresponding,
The middle baffle plate has five pieces.
Further, any middle baffle plate with one group of adjacent wall baffle plate apart from equal.
In such scheme, the material of the burner is 316 stainless steels.
During the device busy, fuel and oxidant will be led to by the entrance point of burner first after fully premixing
Enter its inner space, stabilization burning is realized in the gap between each baffle plate, while completing and between burner inner wall and baffle plate
Heat transfer process, the combustion product of generation then through the outlet discharger of the burner other end outside.
Beneficial effects of the present invention：
(1) after setting baffle plate, the contact area of heat convection will increased between gaseous mixture and burner inner wall；Baffle plate
In the presence of, disturbance and degradation degree of the gaseous mixture in passage are enhanced, and cause that residence time is extended, so as to height can be promoted
Warm gaseous mixture is greatly improved with the convection transfer rate between solid wall surface.
(2) mode of middle baffle plate and wall baffle plate interlaced arrangement, not only increases high temperature product and burner inner wall
Contact area, and can by the enhancing of internal disturbance reach improve convection transfer rate effect, it might even be possible to play
The effect of fixed combustion flame location；
(3) first piece of middle baffle plate can also bear the role of " bluff body ", and fixed fire can be played for fuel such as methane propane
The effect of flame position.
Therefore, under the comprehensive function of this three aspect, not only increase under the conditions of minute yardstick the stability of combustion process and
The applicability of fuel, and reinforcing by Convective Heat Transfer ensure that more heats are absorbed by solid wall surface, it is ensured that
More combustion chemistries can be converted into the radiation energy in burner outer wall face, and this will bring the burner outer wall surface radiation to export
The increase of total amount, makees so as to the raising of operating efficiency and power density to minitype heat optoelectronic system generates positive promotion
With.
Brief description of the drawings
Fig. 1 is the structural representation of internal baffle formula microburner of the present invention.
Description of reference numerals is as follows：
1st, burner wall, 2, combustion zone, 3, middle baffle plate, 4, wall baffle plate, 5, inlet end, 6, outlet side.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
Not limited to this.
Internal baffle formula microburner as shown in Figure 1, the built-in stagger arrangement baffle-type microburner uses 316 not
Rust steel is made, and outward appearance is in rectangular structure.316 stainless steel materials are suitable for various processing sides such as machinery, wire cutting, electric spark
Formula, while more than 2000 DEG C of high temperature can also be born；At high operating temperatures, slin emissivity can reach 0.7 or so, disclosure satisfy that
Radiation energy output in the minitype heat optoelectronic system course of work is required.During processing, the method first by wire cutting is stainless from 316
A rectangular metal block, its apparent size is produced to be respectively on steel raw material：Length 24mm (x directions), width 12mm (y directions),
Highly it is 3mm (z directions).Then, forming one or so opening, section in rectangular block inside center by the method for wire cutting is
The straight channel of rectangle, the size in its three directions is respectively 24mm 11mm 1mm, and now the wall thickness of burner is in height side
It is 1mm to (z directions), is then 0.5mm in width (y directions).Then, using the method for electric spark, vertically internal face enters
Row processing, totally ten pieces of inlet ends of wall baffle plate 4, burner 5 and outlet side 6 and thickness are the burning of 0.5mm to form five groups
Device outside wall surface 1；The square-section at inlet, outlet end is highly 2mm, and width is 11mm；The size difference in 4 three directions of wall baffle plate
It is 0.5mm 11mm 0.5mm, every group of spacing of baffle plate is 4mm, wherein first group of front end of wall baffle plate is apart from the position of air inlet
Puts be then 6mm.Then, using the processing method of wire cutting, five groups totally ten are symmetrically formed on two side walls of burner
0.5mm (x directions) long, 0.5mm (y directions) wide, the square through hole of 1mm (z directions) high, so as to be five insertions of middle baffle plate 3
Accurate locational space is provided；Size of first group of front end of symmetrical through hole apart from the openend of burner is 4mm, and later group is led to
Hole is also 4mm with the spacing of previous group.Finally, process five sizes for 0.5mm 12mm 1mm, that material is similarly 316 is stainless
The middle baffle plate 3 of steel, and it is inserted respectively in each group of through hole, then realize middle baffle plate 3 and combustion with the method for laser welding
The seamless of burner wall 1 is fixedly connected.So far, a most end form for the flat straight channel microburner of built-in stagger arrangement baffle plate
It is arranged at the centre of straight channel and upper lower wall surface into what, middle baffle plate 3 and wall baffle plate 4 were interlocked, mutual distance is
2mm, the region beyond passage Internal baffle then forms gaseous mixture flowing and combustion zone 2.
The burner has preferable suitability of fuel, can select to be easy to the hydrogen for catching fire as fuel, it can also be used to
The combustion process of the larger fuel of the limit of size such as methane propane.During work, from gas cylinder fuel and oxidant warp out
After pressure-reducing valve decompression, premixed gas is formed after being sufficiently mixed in a mixer, and import through copper nozzle and Custom connector
In the microburner.Gaseous mixture realizes stabilization from inlet end 5 into burner and after reaching ignition condition in combustion zone 2
Burning；High-temperature combustion product constantly rejects heat to burner inner wall and baffle plate in flow process, finally from outlet side 6
In draining into the environment beyond burner.
The numerical simulation result of related CFD software shows that premixed gas can be real in internal baffle formula microburner
The burning of existing efficient stable, and with more broad flammable range of flow；There is no the straight of baffle plate compared to same apparent size
Logical burner, the temperature in burner outer wall face can improve 100-200K, and this has also fully shown internal baffle formula micro combustions
The preferable implementation result of device.
Preferred embodiment but the present invention is not limited to above-mentioned implementation method to the embodiment for of the invention, not
In the case of substance of the invention, any conspicuously improved, replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (5)
1. a kind of internal baffle formula microburner, it is characterised in that the burner includes burner wall (1), middle baffle plate
(3), wall baffle plate (4), inlet end (5) and outlet side (6), the burner wall (1) are divided into upper and lower two wall and front and rear two wall；
The burner is respectively arranged at two ends with inlet end (5) and outlet side (6), and the burner internal is provided with middle baffle plate (3)
With wall baffle plate (4), the middle baffle plate (3) and the wall baffle plate (4) are solid rectangles and are parallel to each other, described
Burner inner wall is provided with multigroup wall baffle plate, and each group of wall baffle plate is made up of the wall baffle plate (4) positioned at upper and lower two wall, described
Passage is formed between the wall baffle plate (4) of upper and lower two wall, between the inlet end (5) and wall baffle plate described in first group, adjacent
Middle baffle plate (3) is equipped between wall baffle plate described in two groups, the middle baffle plate (3) is fixed on before and after the burner internal
Two walls, the position of the passage formed between the middle baffle plate (3) and the upper and lower two walls wall baffle plate (4) is corresponding.
2. internal baffle formula microburner as claimed in claim 1, it is characterised in that positioned at upper and lower two wall of the burner
Wall baffle plate (4) position it is corresponding, the wall baffle plate has five groups.
3. internal baffle formula microburner as claimed in claim 2, it is characterised in that the middle baffle plate (3) with it is described
The shape of the passage formed between upper and lower two walls wall baffle plate is corresponding, and the middle baffle plate (3) has five pieces.
4. internal baffle formula microburner as claimed in claim 3, it is characterised in that any middle baffle plate (3) with
One group of adjacent wall baffle plate is apart from equal.
5. the internal baffle formula microburner as described in any one in Claims 1 to 4, it is characterised in that the burning
The material of device is 316 stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510231084.4A CN104930509B (en) | 2015-05-07 | 2015-05-07 | A kind of internal baffle formula microburner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510231084.4A CN104930509B (en) | 2015-05-07 | 2015-05-07 | A kind of internal baffle formula microburner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104930509A CN104930509A (en) | 2015-09-23 |
| CN104930509B true CN104930509B (en) | 2017-06-30 |
Family
ID=54117791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510231084.4A Expired - Fee Related CN104930509B (en) | 2015-05-07 | 2015-05-07 | A kind of internal baffle formula microburner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104930509B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3303921B1 (en) * | 2015-06-04 | 2019-05-22 | Polidoro S.p.A. | Plate gas burner for boiler |
| CN109163326B (en) * | 2018-07-09 | 2020-03-31 | 江苏大学 | Micro-combustor capable of controlling flame position |
| CN110195862B (en) * | 2019-04-16 | 2020-05-19 | 华中科技大学 | Small-size diffusion combustor that disconnect-type was preheated |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030050295A (en) * | 2001-12-18 | 2003-06-25 | 주식회사 경동보일러 | The gas burner having a mixed space of gas fuel and inhaled air |
| CN201547781U (en) * | 2009-12-16 | 2010-08-11 | 重庆大学 | Burning chamber of miniature burner |
| CN202056882U (en) * | 2011-03-09 | 2011-11-30 | 华中科技大学 | Microminiature combustor |
| CN104296139B (en) * | 2014-09-23 | 2017-10-10 | 江苏嘉和热系统股份有限公司 | A kind of multi-channel miniature burner of built-in parallel baffle |
-
2015
- 2015-05-07 CN CN201510231084.4A patent/CN104930509B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104930509A (en) | 2015-09-23 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tang Aikun Inventor after: Cai Tao Inventor after: Xu Yiming Inventor after: Qiao Fangfang Inventor after: Pan Jianfeng Inventor after: Liu Yangxian Inventor before: Tang Aikun Inventor before: Xu Yiming Inventor before: Qiao Fangfang Inventor before: Pan Jianfeng Inventor before: Liu Yangxian |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170630 Termination date: 20180507 |