CN105004212A - Radiating pipe group with triangular channel combination - Google Patents
Radiating pipe group with triangular channel combination Download PDFInfo
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- CN105004212A CN105004212A CN201510550610.3A CN201510550610A CN105004212A CN 105004212 A CN105004212 A CN 105004212A CN 201510550610 A CN201510550610 A CN 201510550610A CN 105004212 A CN105004212 A CN 105004212A
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- fin
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- isosceles triangle
- radiating tube
- fluid passage
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- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000000407 epitaxy Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 210000001624 hip Anatomy 0.000 abstract description 20
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 15
- 238000012546 transfer Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000003416 augmentation Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a radiating pipe group with double triangular channels. The radiating pipe group comprises two radiating pipes, wherein each radiating pipe comprises a base pipe and radiating fins located on the periphery of the base pipe, the cross section of each base pipe is shaped like an isosceles triangle, the radiating fins of each radiating pipe comprise a first radiating fin and second radiating fins, each first radiating fin extends outwards from the apex angle of the corresponding isosceles triangle, the second radiating fins of each radiating pipe comprise multiple radiating fins extending outwards from surfaces where two waists of the corresponding isosceles triangle are located, and multiple radiating fins extending outwards from the corresponding first radiating fin, the second radiating fins extending to the same direction are parallel to each other, and the extending ends of each first radiating fin and the corresponding second radiating fins form a second isosceles triangle; the inner part of each base pipe is provided with a first fluid passage, the inner part of each first radiating fin is provided with a second fluid passage, and each first fluid passage and the corresponding second fluid passage are communicated; the extending ends of the second radiating fins are butted together, and the bottom edges of the isosceles triangles of the two radiating pipes are parallel to each other. The structure of a radiator is optimized, so that the heat exchange efficiency of the radiator is maximized, energy and space are saved, and the aims of environmental protection and energy conservation are achieved.
Description
Technical field
The invention belongs to field of heat exchangers, particularly relate to a kind of radiating tube used that dispels the heat, belong to the field of heat exchangers of F28D.
Background technology
In radiator, use cooling fin tube radiator widely at present, area of dissipation can be expanded by fin, strengthen heat transfer effect, but the fansink-type of cooling fin tube, and the quality of the setting of cooling fin tube parameter all influencer's radiating effect, and at present when energy crisis, urgent need wants economize energy, meet the sustainable development of society, therefore need to develop a kind of new cooling fin tube, need the structure of cooling fin tube to be optimized simultaneously, it is made to reach maximum heat exchange efficiency, with economize energy, save installing space, reach the object of environmental protection and energy saving.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of prismatic cooling fin tube radiator newly.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of radiating tube group of double-triangular channel, described radiating tube group comprises two radiating tubes, described radiating tube comprises base tube and is positioned at the fin of matrix periphery, it is characterized in that, the cross section of described base tube is isosceles triangle, described fin comprises the first fin and the second fin, described first fin stretches out from isosceles triangle drift angle, described second fin comprises multiple fin of stretching from the facing epitaxy at two waist places of isosceles triangle and from the outward extending multiple fin of the first fin, the second fin extended to same direction is parallel to each other, described first fin, the end that second fin extends forms the second isosceles triangle, described substrate tube arranges first fluid passage, and described first fin inside arranges second fluid passage, described first fluid passage and second fluid channel connection,
Described two radiating tubes are docking together by the plane at the place, base of isosceles triangle.
As preferably, two the second isosceles triangles form parallelogram sturcutres.
As preferably, described second fin is relative to the face specular at the first fin center line place, and the distance of adjacent the second described fin is L1, and the base length of described isosceles triangle is W, the length of the waist of described second isosceles triangle is S, meets following formula:
L1/S*100=A*Ln (L1/W*100)+B* (L1/W)+C, wherein Ln is logarithmic function, A, B, C are coefficients, 0.68<A<0.72,22<B<26,7.5<C<8.8;
0.09<L1/S<0.11,0.11<L1/W<0.13
4mm<L1<8mm
40mm <S<75mm
45mm <W<85mm
The drift angle of isosceles triangle is a, 110 ° of <a<160 °.
As preferably, base tube length is L, 0.02<W/L<0.08,800mm<L<2500mm.
As preferably, A=0.69, B=24.6, C=8.3
Compared with prior art, radiating tube of the present invention has following advantage:
1) the invention provides a kind of new radiating tube, and the fin of radiating tube is rationally arranged, more fin can be arranged, therefore there is good radiating effect.
2) the present invention arranges fin by the one side of radiating tube again, and the bottom surface of radiating tube (both not arranging the one side of fin) is plane, plane can be close on body of wall when installation, thus saves installing space.
3) the present invention arranges fluid passage on the first fin of radiating tube, and is communicated with in the fluid passage of base tube, further increases the flowing space of fluid, has expanded the heat exchange area of fluid, makes fluid directly and contact heat-exchanging, improves heat-sinking capability.
4) the present invention is by test of many times, obtains an optimum radiating tube optimum results, and is verified by test, thus demonstrate the accuracy of result.
5) by the new radiating tube group that two radiating tubes are combined into, thus the optimization of radiating effect is realized.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of an embodiment;
Fig. 2 is the main TV structure schematic diagram of an embodiment;
Fig. 3 is the schematic diagram that the right side of Fig. 1 is observed;
Fig. 4 is the sectional drawing of the fin of providing holes;
Fig. 5 is the front elevation of the fin of providing holes;
Fig. 6 is the schematic diagram of hole stagger arrangement;
Fig. 7 is collector cross-sectional structure schematic diagram;
Fig. 8 is two triangle radiating tube group schematic diagrames.
Reference numeral is as follows:
1. base tube, 2. first fluid passage, 3 first fin, 4 second fin, 5 second fin, 6 first waists, 7 second waists, 8 bases, 9 holes, 10 second fluid passages, 11 collectors near the side of wall, 12 collectors
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Herein, if do not have specified otherwise, relate to formula, "/" represents division, "×", " * " represent multiplication.
As Fig. 1, shown in 2, the radiating tube that a kind of radiator uses, described radiating tube comprises base tube 1 and is positioned at the fin 3-5 of base tube periphery, as Fig. 1, shown in 2, the cross section of described base tube is isosceles triangle, described fin comprises the first fin 3 and the second fin 4, 5, described first fin 3 is outward extending from isosceles triangle drift angle, described second fin 4, 5 comprise multiple fin 4 of stretching from the facing epitaxy at two waist places of isosceles triangle and from the outward extending multiple fin 5 of the first fin, the second fin 4 extended to same direction, 5 is parallel to each other, such as, as shown in the figure, waist from the isosceles triangle second waist 7(left side) outward extending second fin 4, 5 is parallel to each other, from the isosceles triangle first waist 6(i.e. waist on the right) outward extending second fin 4, 5 is parallel to each other, described first fin 3, second fin 4, 5 ends extended form the second isosceles triangle, as shown in Figure 1, the length of the waist of the second isosceles triangle is S, described base tube 1 inside arranges first fluid passage 2, and described first fin 3 inside arranges second fluid path 10, described first fluid passage 3 and second fluid channel connection 10.Such as, as described in Figure 1, be communicated with at isosceles triangle corner position.
As preferably, first fluid passage is isosceles triangle.
By vibrational power flow so, the multiple fin of base tube 1 outer setting can be made, increase heat radiation, fluid passage is set in the first fin inside simultaneously, make fluid enter in the first fin, the second fin be directly connected with the first fin carries out heat exchange, adds heat-sinking capability.
Described radiator is preferably convector, and the fluid of described first fluid passage and second fluid passage is preferably water.
General radiating tube is all that surrounding or both sides arrange fin, but find in engineering, the fin one of the side contacted with wall is bad for heat convection effect in situation, because air wall side flow relatively poor, therefore isosceles triangle base 8 is set to plane by the present invention, time therefore fin is installed, can directly by plane and wall close contact, compared with other radiator, installing space can be saved greatly, avoid the waste in space, take special fin form simultaneously, ensure to meet best radiating effect.
As preferably, described second fin 4,5 relative to the face specular at the first fin 3 center line place, namely relative to the face specular at the line place of the summit of isosceles triangle and the mid point at place, base.
As preferably, the second fin extends perpendicular to two waists of the second isosceles triangle.
When the length on the limit of isosceles triangle is certain, first fin 3 and the second fin 4, 5 is longer, then heat transfer effect is better in theory, find in process of the test, when the first fin and the second fin reach certain length time, then heat transfer effect just increases very not obvious, main because along with the first fin and the increase of the second fin length, also more and more lower in the temperature of fin end, along with temperature is reduced to a certain degree, heat transfer effect then can be caused not obvious, also add the cost of material on the contrary and considerably increase the space occupied of radiator, simultaneously, in heat transfer process, if the spacing between the second fin is too little, also the deterioration of heat transfer effect is easily caused, because along with the increase of radiating tube length, in air uphill process, boundary layer is thickening, boundary layer between abutting fins is caused to overlap mutually, worsen heat transfer, spacing between too low or the second fin of radiating tube length causes too greatly heat exchange area to reduce, have impact on the transmission of heat, therefore in the distance of the second adjacent fin, the length of side of isosceles triangle, an optimized size relationship is met between the length of the first fin and the second fin and heat sink length.
Therefore, the present invention is the dimensionally-optimised relation of the radiator of the best summed up by thousands of test datas of the radiator of multiple different size.
The distance of described the second adjacent fin is L1, and the base length of described isosceles triangle is W, and the length of the waist of described second isosceles triangle is S, and the relation of above-mentioned three meets following formula:
L1/S*100=A*Ln (L1/W*100)+B* (L1/W)+C, wherein Ln is logarithmic function, A, B, C are coefficients, 0.68<A<0.72,22<B<26,7.5<C<8.8;
0.09<L1/S<0.11,0.11<L1/W<0.13
4mm<L1<8mm
40mm <S<75mm
45mm <W<85mm
The drift angle of isosceles triangle is a, 110 ° of <a<160 °.
As preferably, base tube length is L, 0.02<W/L<0.08,800mm<L<2500mm.
As preferably, A=0.69, B=24.6, C=8.3.
It should be noted that, the distance L1 of adjacent second fin is the distance counted from the center of the second fin, as shown in Figure 1.
By testing after result of calculation, by the numerical value of computation bound and median, the result of gained matches with formula substantially, and error is substantially within 3.54%, and maximum relative error is no more than 3.97%, and mean error is 2.55% again.
Preferably, the distance of described the second adjacent fin is identical.
As preferably, the width of the first fin is greater than the width of the second fin.
Preferably, the width of the first fin is b1, and the width of the second fin is b2, wherein 2.2*b2<b1<3.1*b2;
As preferably, the width of second fluid passage be the 0.85-0.95 of the width of the second fin doubly, be preferably 0.90-0.92 doubly.
Width b1, b2 herein refer to the mean breadth of fin.
As preferably, 0.9mm<b2<1mm, 2.0mm<b1<3.2mm.
Preferably, change according to certain rule for the distance between the second fin, concrete rule is from the base angle of isosceles triangle to drift angle, distance between the second fin 4 that two waists of isosceles triangle extend is more and more less, end from the drift angle of isosceles triangle to the first fin 3, the distance between the second fin 5 that the first fin 3 extends is increasing.Main cause is the second fin arranged at waist, and heat dissipation capacity increases gradually from base angle to drift angle, and therefore need the quantity increasing fin, the spacing therefore by reducing fin increases the quantity of fin.In like manner, along the first fin 3, from bottom to end, the quantity of heat radiation is fewer and feweri, therefore reduces the quantity of fin accordingly.By setting like this, radiating efficiency can be improved greatly, save material greatly simultaneously.
As preferably, from the base angle of isosceles triangle to drift angle, the amplitude that distance between the second fin 4 that two waists of isosceles triangle extend reduces is more and more less, end from the drift angle of isosceles triangle to the first fin 3, the amplitude that the distance between the second fin 5 that the first fin 3 extends increases is increasing.Found through experiments, by above-mentioned setting, with increase or minimizing amplitude identical compared with, the radiating effect of about 15% can be improved.Therefore there is good radiating effect.
Preferably, change according to certain rule for the width b2 between the second fin, concrete rule is from the base angle of isosceles triangle to drift angle, increasing from the width of the second fin 4 of two waists extensions of isosceles triangle, end from the drift angle of isosceles triangle to the first fin 3, the second fin 5 width extended from the first fin 3 is more and more less.Main cause is the second fin arranged at waist, and heat dissipation capacity increases gradually from base angle to drift angle, and therefore need the area increasing heat radiation, the width therefore by increasing fin increases the area of dissipation of fin.In like manner, along the first fin 3, from bottom to end, the quantity of heat radiation is fewer and feweri, therefore reduces the area of fin accordingly.By setting like this, radiating efficiency can be improved greatly, save material greatly simultaneously.
As preferably, from the base angle of isosceles triangle to drift angle, the amplitude increased from the second fin 4 width of two waists extensions of isosceles triangle is increasing, end from the drift angle of isosceles triangle to the first fin 3, the amplitude reduced from the second fin 5 width of the first fin 3 extension is more and more less.Found through experiments, by above-mentioned setting, with increase or minimizing amplitude identical compared with, the radiating effect of about 16% can be improved.Therefore there is good radiating effect.
As preferably, although the width of the second fin or distance change, preferably, still meet the regulation of above-mentioned optimum formula.
Preferably, as Figure 4-Figure 6, providing holes 9 on the first and/or second fin, for breakable layer laminar sublayer.Main cause is that the second fin carries out heat exchange mainly through the convection current of air, air upwards carries out the flowing of free convection from the bottom of the second fin, in the process of air flows upwards, the thickness in boundary layer constantly becomes large, even finally cause the boundary layer between adjacent second fin to overlap, this kind of situation can cause the deterioration of heat exchange.Therefore boundary layer can be destroyed by providing holes 9, thus augmentation of heat transfer.
Preferably, the shape in hole 9 is semicircle or circular.
Preferably, the through whole fin in hole 9.
Preferably, multiple row hole is set, in staggered arrangement between hole, as shown in Figure 6.
As one preferably, along the direction of the flowing of air, the top namely from the bottom of radiator to radiator, the area in hole 9 constantly increases.Main cause is the direction of the flowing along air, and the thickness in boundary layer constantly increases, and therefore by arranging the area constantly increasing hole 9, can make constantly to increase the destructiveness in boundary layer, thus augmentation of heat transfer.
Preferably, the hole 9 of maximum area is 1.25-1.37 times of minimum area, preferably 1.32 times.
As one preferably, along the direction of the flowing of air, the top namely from the bottom of radiator to radiator, the density (i.e. quantity) in hole 9 constantly increases.Main cause is the direction of the flowing along air, and the thickness in boundary layer constantly increases, and therefore by arranging the density in ever-increasing hole 9, can make constantly to increase the destructiveness in boundary layer, thus augmentation of heat transfer.
Preferably, the density in the place that hole 9 is the closeest is 1.26-1.34 times of the density in the thinnest place, preferably 1.28 times.
As one preferably, on same second fin, from fin root (namely and the connecting portion of base tube 1) to fin top, the area in each hole 9 constantly diminishes.Main cause is from fin root to fin top, and the temperature of fin constantly declines, and therefore the thickness in boundary layer constantly reduces, and by arranging the area in the hole 9 of change, can realize the thickness of the diverse location destroying boundary layer, thus save material.
Preferably, the PTAT example relation on the change of the area in hole 9 and fin.
As one preferably, on same second fin, from fin root (namely and the connecting portion of base tube 1) to fin top, the density in hole 9 constantly reduces.Main cause is from fin root to fin top, and the temperature of fin constantly declines, and therefore the thickness in boundary layer constantly reduces, and by arranging the density in the hole 9 of change, can realize the thickness of the diverse location destroying boundary layer, thus save material.
Preferably, the PTAT example relation on the change of the density in hole 9 and fin.
Certainly, the most preferably, also can be the combination of at least two kinds of above-mentioned various ways.
The invention also discloses a kind of radiator, described radiator comprises upper header and lower collector pipe and the radiating tube between upper lower collector pipe, and described radiating tube is exactly foregoing radiating tube.
As preferably, as shown in Figure 7, the side 11 that the close wall of described upper lower collector pipe 12 is installed is planar structure.By arranging planar structure, making it match with the plane base 8 of above-mentioned radiating tube, can be close on wall, thus reach space-saving requirement.
As preferably, the invention provides a kind of radiating tube group combined by above-mentioned two radiating tubes, as shown in Figure 8.
Together, the base of the isosceles triangle of described two radiating tubes is parallel to each other in the end docking (or perhaps connection) that described radiating tube group is extended by the second fin of radiating tube.Because base 8 is planes, together with abutting against with wall when therefore can ensure to install, thus save installing space.
As preferably, as shown in Figure 8, two radiating tube second isosceles triangles form a parallelogram.That is, the point that the drift angle of the second isosceles triangle of a radiating tube is sitting in is connected with the base of the second isosceles triangle of another radiating tube and the tie point of the second waist.
By setting like this, make the space that formation one is closed between second fin at middle part, thus define the chimney effect of air-flow suction, enhance heat transfer.
As preferably, present invention also offers a kind of radiator, described radiator comprises upper header and lower collector pipe and the multiple radiating tube groups between upper lower collector pipe, and described radiating tube group is exactly the radiating tube group shown in Fig. 8.
As preferably, described in described upper header and lower collector pipe, each collector has planar section, as described in Figure 7, thus makes the one side contacted with wall be plane.
As preferably, upper header is two, is communicated with respectively with the radiating tube of two in radiating tube group, and in like manner, lower collector pipe is two, is communicated with respectively with the radiating tube of two in radiating tube group.
Preferably, described fluid enters two collectors of upper header respectively, then respectively by two radiating tubes in radiating tube group, enters into lower collector pipe two collectors respectively, then flows out lower collector pipe, thus form whole circulation.That is, two radiating tubes in radiating tube group connect respective upper header and lower collector pipe respectively, and namely the flowing of radiating tube and respective upper header and lower collector pipe is in parallel, is independently, is not communicated with mutually.
Although the present invention discloses as above with preferred embodiment, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (5)
1. the radiating tube group of a double-triangular channel, described radiating tube group comprises two radiating tubes, described radiating tube comprises base tube and is positioned at the fin of matrix periphery, it is characterized in that, the cross section of described base tube is isosceles triangle, described fin comprises the first fin and the second fin, described first fin stretches out from isosceles triangle drift angle, described second fin comprises multiple fin of stretching from the facing epitaxy at two waist places of isosceles triangle and from the outward extending multiple fin of the first fin, the second fin extended to same direction is parallel to each other, described first fin, the end that second fin extends forms the second isosceles triangle, described substrate tube arranges first fluid passage, and described first fin inside arranges second fluid passage, described first fluid passage and second fluid channel connection,
The end that described two radiating tubes are extended by the second fin is docking together, and the base of the isosceles triangle of described two radiating tubes is parallel to each other.
2. radiating tube group as claimed in claim 1, is characterized in that, two the second isosceles triangles form parallelogram sturcutre.
3. radiating tube group as claimed in claim 1 or 2, it is characterized in that, described second fin is relative to the face specular at the first fin center line place, the distance of adjacent the second described fin is L1, the base length of described isosceles triangle is W, the length of the waist of described second isosceles triangle is S, meets following formula:
L1/S*100=A*Ln (L1/W*100)+B* (L1/W)+C, wherein Ln is logarithmic function, A, B, C are coefficients, 0.68<A<0.72,22<B<26,7.5<C<8.8;
0.09<L1/S<0.11,0.11<L1/W<0.13
4mm<L1<8mm
40mm <S<75mm
45mm <W<85mm
The drift angle of isosceles triangle is a, 110 ° of <a<160 °.
4. radiating tube as claimed in claim 3, it is characterized in that, base tube length is L, 0.02<W/L<0.08,800mm<L<2500mm.
5. radiating tube as claimed in claim 4, is characterized in that A=0.69, B=24.6, C=8.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510550610.3A CN105004212B (en) | 2015-09-01 | 2015-09-01 | A kind of radiating tube group of triangular duct combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510550610.3A CN105004212B (en) | 2015-09-01 | 2015-09-01 | A kind of radiating tube group of triangular duct combination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105004212A true CN105004212A (en) | 2015-10-28 |
| CN105004212B CN105004212B (en) | 2016-11-30 |
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|---|---|---|---|
| CN201510550610.3A Expired - Fee Related CN105004212B (en) | 2015-09-01 | 2015-09-01 | A kind of radiating tube group of triangular duct combination |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120180990A1 (en) * | 2010-07-15 | 2012-07-19 | Benteler Automobiltechnik Gmbh | Heat exchanger |
| WO2013111099A2 (en) * | 2012-01-25 | 2013-08-01 | Krzysztof Bartoszewski | Emitting and absorptive panel, in particular heating and cooling panel |
| CN104048521A (en) * | 2014-06-09 | 2014-09-17 | 赵炜 | Radiator with density decreased along with embossments of main fins |
-
2015
- 2015-09-01 CN CN201510550610.3A patent/CN105004212B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120180990A1 (en) * | 2010-07-15 | 2012-07-19 | Benteler Automobiltechnik Gmbh | Heat exchanger |
| WO2013111099A2 (en) * | 2012-01-25 | 2013-08-01 | Krzysztof Bartoszewski | Emitting and absorptive panel, in particular heating and cooling panel |
| CN104048521A (en) * | 2014-06-09 | 2014-09-17 | 赵炜 | Radiator with density decreased along with embossments of main fins |
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| CN105004212B (en) | 2016-11-30 |
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Effective date of registration: 20180917 Address after: 226500 Jiangsu Rugao Rugao high tech Industrial Park No. 826 along Yanjiang Road Patentee after: KAIYUAN PLASTIC INDUSTRY SCIENCE & TECHNOLOGY (NANTONG) CO.,LTD. Address before: 266075 room 0201, block A, 75 Fuzhou South Road, Shinan District, Qingdao, Shandong. Patentee before: Zhao Wei |
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