CN1888533A - Low-heat loss micro-scale burner - Google Patents
Low-heat loss micro-scale burner Download PDFInfo
- Publication number
- CN1888533A CN1888533A CN 200610036628 CN200610036628A CN1888533A CN 1888533 A CN1888533 A CN 1888533A CN 200610036628 CN200610036628 CN 200610036628 CN 200610036628 A CN200610036628 A CN 200610036628A CN 1888533 A CN1888533 A CN 1888533A
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- CN
- China
- Prior art keywords
- micro
- burner
- combustion chamber
- heat loss
- low
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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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- 238000002485 combustion reaction Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 3
- 239000010935 stainless steel Substances 0.000 claims abstract description 3
- 239000011229 interlayer Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- -1 pottery Substances 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000012791 bagels Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention includes a combustion chamber. The inwall of the combustion chamber is made of porous sintered materials, such as ceramic, copper, stainless steel, nickel and so on, so it has a certain permeability. Between the outer wall of the burner and the inwall of the porous material there is a sandwich cavity, whose gap is 1-3mm. The combustion premix gas is induced into the combustion chamber from the sandwich cavity through the porous inwall.
Description
Technical field
The present invention relates to energy technology field, relate in particular to the micro-energy resource system field.
Technical background
Micro elements (MEMS) such as minute yardstick aircraft, mini-medical apparatus, micro motor, Micropump and microsensor, mobile communication, the military microminiaturization that all requires power-supply system with reconnaissance system etc., all these require the energy supplying system high-energy-density, will become increasingly difficult and traditional chemical cell energy-provision way satisfies these requirements.Electricity generating principle based on the micro-energy resource system that burns is: micro-scale burner produces high-temperature flue gas and drives hot machine acting, generates electricity or pass through directly conversion acquisition electric power of thermoelectricity.The generated output of the microkinetic system of present research and development is several watts and arrives several milliwatts.
Micro-scale burner is the core component of little electricity generation system, compare with conventional yardstick, the surface area/volume ratio of burner increases several magnitude under the minute yardstick, cause the heat loss of micro-scale burner very big, the micro-burner heat loss of having developed at present is 15～35%, part even surpass 50%.Existing micro-scale burner research and development institution carries out many work aspect the micro-scale burner heat loss reducing, and has adopted regenerative apparatus as the miniature turbo burner of MIT, effectively reduce the heat loss of combustion chamber wall surface, but the overall thermal loss is still very high.And the winding channel for heat exchange technology that Switzerland's bagel structure micro-scale burner adopts, it is very low that the exhanst gas outlet temperature is dropped to, solved the heat loss problem of burner well, but because it is very long to twine heat exchanger channels, make that micro-scale burner active combustion chamber volume is smaller with respect to whole burner, can reduce the energy density of burner.
Therefore, be badly in need of at present a kind ofly can reducing heat loss, the micro-scale burner of higher energy density is arranged again.
The purpose of this invention is to provide a kind of low-heat loss, flame stabilization, also have the micro-scale burner of higher energy density simultaneously.
Principle of the present invention is: the brand-new mode that adopts the air inlet of wall porous, rationalization is flammable, and premix gas carries out active combustion in the combustion chamber, to reach the purpose that reduces the micro-scale burner heat loss, thereby the raising flame holding can also guarantee that enough combustion spaces are to keep high energy density simultaneously.
As shown in Figure 1, micro-scale burner structure of the present invention is as follows: described burner comprises combustion chamber 1, and the internal face 2 of combustion chamber 1 is a porous sintered material, and agglomerated material can be metals such as pottery, copper, stainless steel and nickel, has air penetrability 20%～50%, porous sintered wall thickness 0.1～3mm.The agglomerated material particle diameter is evenly distributed, and the pressure loss is little.Interlayer cavity 4 between burner outer wall face 3 and the porous material internal face 2, interlayer cavity 4 gaps are 1～3mm, the flammable premix gas that fuel/air mixture mix to form partly or entirely thus interlayer cavity 4 enter combustion chamber 1 through porous internal face 2, combustion chamber 1 cross sectional shape can be for round or square.
When the present invention uses, adopt following intake method: flammable premix gas enters in the combustion chamber 1 after can partly or entirely seeing through porous material internal face 2 by side direction via interlayer cavity 4, mixes with the air that end face enters, and realizes burning.The heat that combustion reaction discharges has heated porous material internal face 2, make wall surface temperature rise rapidly, the combustion mixture of lower temperature is through porous material the time simultaneously, carry out exchange heat with porous material, make mixture temperature raise, the heat that makes the script high-temperature wall surface distribute obtains recycling, and porous internal face 2 material temperature descend, make the hull-skin temperature of burner be reduced to reduced levels, reduce, effectively realize the purpose of the low heat waste of burner to the environment heat radiation.When the premix gas of rich fuel enters through porous internal face 2, near wall, form unreacted fuel gas air film thin layer easily, premix gas makes the porous internal face 2 and the heat convection of high-temperature flue gas be cut off in this thin layer, the heat of heating internal face 2 is from the heat conduction of air film layer and the heat radiation of high-temperature flue gas, effectively stop heat to the wall transmission, thereby reduce the temperature of internal face 2.
In sum, the present invention is guaranteeing enough combustion spaces with when keeping high energy density, has reached the purpose that reduces the micro-scale burner heat loss, has improved flame holding, has overcome the defective of prior art, has broad application prospects.
Description of drawings
Fig. 1 is the embodiment of the invention 1 structural representation.
Reference numeral: combustion chamber 1, internal face 2, outside wall surface 3, interlayer cavity 4, outlet 5
The specific embodiment
Further content of the present invention is described below in conjunction with drawings and Examples.
As shown in Figure 1, the present embodiment micro-scale burner comprises combustion chamber 1, and 1 cross section, combustion chamber is round.The internal face 2 of combustion chamber 1 is a porous sintered material, and described agglomerated material is the copper powder sintering metal, and air penetrability is 40%, and outside wall surface 3 is a metallic aluminium, forms interlayer cavity 4 between internal face 2 and the outside wall surface 3.Concrete size as shown in drawings, combustion chamber inner diameter d=10mm, outer diameter D=26mm, porous internal face 2 thick 2.5mm, high 19.5mm, burner height is 22mm.Methane/air Mixture is adopted in test, and the total mixing ratio of methane air is supplied with by completing combustion chemical reaction equivalent proportion, and namely for methane is 1: 9.52 with volume of air flow ratio.Gas divides two-way to supply with, and 70% air and whole methane blended form rich fuel combustible gas and enter combustion chamber 1 by the side of combustion chamber through outside wall surface 3, interlayer cavity 4, porous internal face 2; 30% pure air enters combustion chamber 1 by porous wall from end face.When burner outlet cross section 5 place's mean flow raties were 0.3m/s, combustion chamber 1 can form stable flame, and flame is blue, observes to import along outlet, and flame front is a ring-type.Obtain by the thermocouple actual measurement: porous internal face 2 inboard temperature are lower than 500 ℃, the outside is lower than 300 ℃, and air is preheating to about 220 ℃ in the interlayer cavity 4, and outside wall surface 3 temperature are lower than 170 ℃, and peak flame temperature reaches 1120 ℃ in the combustion chamber 1, and outlet 5 mean temperatures are 1070 ℃.Micro-scale burner outside wall surface heat loss is 5.6% under this operating mode, far below the loss late of prior art.
Claims (6)
1, a kind of micro-scale burner of low-heat loss, comprise combustion chamber (1) and burner outer wall face (3), it is characterized in that: the internal face (2) of described combustion chamber (1) is a porous sintered material, and interlayer cavity (4) is arranged between burner outer wall face (3) and the internal face (2); Adopt following intake method: flammable premix gas enters in the combustion chamber (1) after partly or entirely seeing through porous material internal face (2) by side direction via interlayer cavity (4), mixes with the air that end face enters, and realizes burning.
2, the micro-scale burner of low-heat loss as claimed in claim 1, it is characterized in that: the porous sintered material of described internal face (2) is one of following: metal sintering materials such as pottery, copper, stainless steel and nickel, the agglomerated material particle diameter is evenly distributed, and the pressure loss is little.
3, the micro-scale burner of low-heat loss as claimed in claim 1 or 2 is characterized in that: the porous sintered material of described internal face (2) has the air penetrability of 20%-50%, porous sintered wall thickness 0.1～3mm.
4, the micro-scale burner of low-heat loss as claimed in claim 1 is characterized in that: described interlayer cavity (4) gap is 1～3mm.
5, the micro-scale burner of low-heat loss as claimed in claim 1 is characterized in that: described combustion chamber (1) cross sectional shape is round.
6, the micro-scale burner of low-heat loss as claimed in claim 1 is characterized in that: described combustion chamber (1) cross sectional shape is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100366282A CN100449205C (en) | 2006-07-18 | 2006-07-18 | Low-heat loss micro-scale burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100366282A CN100449205C (en) | 2006-07-18 | 2006-07-18 | Low-heat loss micro-scale burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1888533A true CN1888533A (en) | 2007-01-03 |
| CN100449205C CN100449205C (en) | 2009-01-07 |
Family
ID=37577820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100366282A Expired - Fee Related CN100449205C (en) | 2006-07-18 | 2006-07-18 | Low-heat loss micro-scale burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100449205C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782231A (en) * | 2010-03-22 | 2010-07-21 | 中国科学院广州能源研究所 | Minitype gas turbine burner with secondary air inlet structure |
| CN101852432A (en) * | 2010-06-08 | 2010-10-06 | 华南理工大学 | Heat regenerative liquid fuel micro-burner |
| CN102135272A (en) * | 2011-03-09 | 2011-07-27 | 华中科技大学 | Micro diffusion combustor |
| CN102147111A (en) * | 2011-03-21 | 2011-08-10 | 重庆大学 | Grading catalytic combustion device capable of coupling strong and weak heat release |
| CN102323390A (en) * | 2011-08-12 | 2012-01-18 | 北京理工大学 | Constant volume premixed combustion testing apparatus |
| CN103148483A (en) * | 2013-02-27 | 2013-06-12 | 华中科技大学 | Graded mixing tiny type diffusion burner |
| CN105066174A (en) * | 2015-07-24 | 2015-11-18 | 北京航空航天大学 | Super-micro turbojet engine combustor with inverted-L-shaped head |
| CN106247403A (en) * | 2016-08-02 | 2016-12-21 | 北京航空航天大学 | A kind of miniature gas turbine combustion chamber of double-wall structure |
| CN107795993A (en) * | 2017-10-24 | 2018-03-13 | 华中科技大学 | A kind of micro-combustor for possessing multilayer wall structure |
| CN109712501A (en) * | 2018-11-21 | 2019-05-03 | 浙江大学 | A kind of underground traffic ALT-CH alternate channel fire simulation experiment platform |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1463663A (en) * | 1973-03-28 | 1977-02-02 | Shell Int Research | Porous media burner |
| JPS61143613A (en) * | 1984-12-18 | 1986-07-01 | Ngk Insulators Ltd | Radiant burner |
-
2006
- 2006-07-18 CN CNB2006100366282A patent/CN100449205C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782231A (en) * | 2010-03-22 | 2010-07-21 | 中国科学院广州能源研究所 | Minitype gas turbine burner with secondary air inlet structure |
| CN101782231B (en) * | 2010-03-22 | 2011-06-08 | 中国科学院广州能源研究所 | Minitype gas turbine burner with secondary air inlet structure |
| CN101852432A (en) * | 2010-06-08 | 2010-10-06 | 华南理工大学 | Heat regenerative liquid fuel micro-burner |
| CN101852432B (en) * | 2010-06-08 | 2011-12-28 | 华南理工大学 | Heat regenerative liquid fuel micro-burner |
| CN102135272A (en) * | 2011-03-09 | 2011-07-27 | 华中科技大学 | Micro diffusion combustor |
| CN102147111A (en) * | 2011-03-21 | 2011-08-10 | 重庆大学 | Grading catalytic combustion device capable of coupling strong and weak heat release |
| CN102147111B (en) * | 2011-03-21 | 2012-06-06 | 重庆大学 | Grading catalytic combustion device capable of coupling strong and weak heat release |
| CN102323390A (en) * | 2011-08-12 | 2012-01-18 | 北京理工大学 | Constant volume premixed combustion testing apparatus |
| CN103148483A (en) * | 2013-02-27 | 2013-06-12 | 华中科技大学 | Graded mixing tiny type diffusion burner |
| CN105066174A (en) * | 2015-07-24 | 2015-11-18 | 北京航空航天大学 | Super-micro turbojet engine combustor with inverted-L-shaped head |
| CN106247403A (en) * | 2016-08-02 | 2016-12-21 | 北京航空航天大学 | A kind of miniature gas turbine combustion chamber of double-wall structure |
| CN106247403B (en) * | 2016-08-02 | 2019-08-02 | 北京航空航天大学 | A kind of miniature gas turbine combustion chamber of double-wall structure |
| CN107795993A (en) * | 2017-10-24 | 2018-03-13 | 华中科技大学 | A kind of micro-combustor for possessing multilayer wall structure |
| CN109712501A (en) * | 2018-11-21 | 2019-05-03 | 浙江大学 | A kind of underground traffic ALT-CH alternate channel fire simulation experiment platform |
| WO2020103618A1 (en) * | 2018-11-21 | 2020-05-28 | 浙江大学 | Fire simulation experiment platform for underground traffic conversion passage |
| US11798432B2 (en) | 2018-11-21 | 2023-10-24 | Zhejiang University | Experiment platform for simulating fire in underground traffic conversion channel |
| CN109712501B (en) * | 2018-11-21 | 2024-02-02 | 浙江大学 | Underground traffic conversion channel fire simulation experiment platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100449205C (en) | 2009-01-07 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20090107 |