CN201556412U - Sheet metal with microscopic holes - Google Patents
Sheet metal with microscopic holes Download PDFInfo
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- CN201556412U CN201556412U CN2009201703545U CN200920170354U CN201556412U CN 201556412 U CN201556412 U CN 201556412U CN 2009201703545 U CN2009201703545 U CN 2009201703545U CN 200920170354 U CN200920170354 U CN 200920170354U CN 201556412 U CN201556412 U CN 201556412U
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Abstract
The utility model discloses a sheet metal with microscopic holes. The sheet metal comprises a baseplate, a plurality of linear grooves and a plurality of recessed grooves, wherein the baseplate comprises a first surface, a second surface opposite to the first surface and a plurality of side surfaces adjoined between the first and the second surfaces; the plurality of linear grooves are parallely formed on the first surface of the baseplate, and each linear groove is perpendicular to the direction of the first surface, and takes the shape of a taper; the plurality of recessed grooves are formed on the second surface of the baseplate, each recessed groove takes the shape of a taper, all the recessed grooves are distributed in a multi-row manner, and each row of recessed grooves correspond to the linear grooves on the first surface of the baseplate; the linear grooves on the first surface and the recessed grooves on the second surface are transfixed, the microscopic holes are formed at the feed-through joint, and the minimal width of the microscopic holes is smaller than the thickness of the baseplate; and the baseplate device with the largest number of microscopic holes is formed in virtue of the baseplate with certain unit area, and can be used as an acoustic board, and the sound absorption coefficient can be improved.
Description
Technical field
The utility model relates to a kind of sheet metal with micropore, refers in particular to a kind ofly on the substrate of certain unit area, molds the substrate device of maximum micropore quantity, so as to can be as the usefulness of abatvoix, and improves its acoustic absorptivity.
Background technology
Because at present in the environment arround the life, be flooded with various noise, and can badly influence quality of the life, for this reason, then there are all kinds of sound-absorbings or noise insulation equipment to arise at the historic moment, wherein good especially with the sound-absorbing effect of abatvoix, this abatvoix source then of constructing arises from " the microwell plate sound-absorbing theory " that Ma Dayou academician that China in 1970 studies in U.S.A is proposed, it mainly is to utilize the surface of a sheet material to be provided with some apertures and the aperture needs less than thickness of slab, after sound enters aperture (tunnel), its sound wave kinetic energy molecule can penetrate at a high speed with tube wall at die and stick together, just cause the friction of molecule to be transformed into heat energy up to molecular kinetic energy this moment, makes sound energy attenuation so as to having reached the effect of sound insulation.
The applicant then in view of the above theory applied for many patents successively, novel M289784 number " metal abatvoix " patent case of TaiWan, China of being announced on April 21st, 2006 wherein, gather and to be arranged with the pyrometric cone that has an oval minute aperture at the bottom of many awls in its bottom surface that mainly ties up to a metal plate, establish tool in the end face of metal plate again and be configured as fine undaform surface, and on the undaform surface, also be arranged with the shaping pyrometric cone around the top, corresponding oval minute aperture place; In view of the above, the sound wave of reflection is collided mutually disturbs and produce decay, simultaneously,, also can cause the sound wave transmission loss even the part sound wave will penetrate the pyrometric cone awl oval minute aperture at the end, with the sound-absorbing of Da Gengjia and faster group establish effect.
On May 16th, 2009, disclosed TaiWan, China was invented " how much micropore abatvoixs " patent case No. 200920902 in addition, it is then that mainly the below of floor layer is equiped with a metal plate body, the end face of plate body is concaved with fine many curved surfaces appearance and fine how much hole slots that are connected respectively with the bottom surface, utilize the conical surface of different angles to produce refraction mutually, facilitate mutual interference and the kinetic energy of consumed cabin air power, and the air layer between plate body and floor layer will increase the friction loss of sound wave kinetic energy, to reach the good sound absorption function.
Yet, the patent case of above-mentioned these applications, it all is to use " microwell plate sound-absorbing theory "; And present on the market some abatvoixs structures, also be to utilize this theory to make production, but because acoustic absorptivity system is directly proportional with micropore quantity number on the area sheet material necessarily, if therefore can on sheet material, produce maximum micropores, not only can improve its acoustic absorptivity, and have the advantage of saving material and manufacturing cost, but relevant theory or technology are not arranged openly at present, so on manufacturing technology, still be difficult to break through and promote.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of sheet metal with micropore, is intended to solve abatvoix and is difficult to produce maximum micropores on the sheet material of certain unit area, and can't effectively improve the problem of acoustic absorptivity.
For solving the problems of the technologies described above, technical solution of the present utility model is:
The utility model provides a kind of sheet metal with micropore, comprise a substrate, plural linear groove and plural recessed groove, wherein: substrate includes a first surface, with respect to a second surface of first surface, and be adjacent to plural side between first surface and the second surface; The plural number linear groove, each linear groove is arranged in parallel the first surface in substrate, and each linear groove is gradually-reducing shape on the direction perpendicular to first surface; The plural number recessed groove, be positioned at the second surface of substrate, each recessed groove is gradually-reducing shape on the direction perpendicular to second surface, all recessed groove cloth are made as many row's kenels, every row's recessed groove is corresponding to the linear groove of substrate first surface, and the linear groove of first surface and the recessed groove of second surface connect, and the confluce of its perforation forms a micropore, and the minimum widith of micropore is less than the thickness of substrate.
The hardness HRB of aforesaid substrate is between 8 to 40, and ductility is between 4 to 30.
Micropore number on the aforesaid substrate is between every square centimeter 80000 to 450000 or between 250000 to 400000.
Above-mentioned each linear groove is parallel to a side of substrate.
Above-mentioned recessed groove is the polygon groove of a gradually-reducing shape, and the vee gutter that this polygon groove is a gradually-reducing shape.
Every row's recessed groove of aforesaid substrate second surface, its each recessed groove become equidistant and arrange.
Every row's recessed groove of aforesaid substrate second surface, between the recessed groove of the system row of being adjacent, linear direction along linear groove has the distance of staggering, this staggers apart from the slot pitch less than two adjacent recessed grooves on the linear direction, and maybe this staggers apart from 1/2nd of the slot pitch that equals two adjacent recessed grooves on the linear direction.
Above-mentioned micropore is being parallel to width on the linear groove linear direction greater than perpendicular to the width on the linear groove linear direction.
After adopting such scheme, advantage of the present utility model is:
1. the utility model can produce the maximum micropore of quantity, and then can significantly save material and manufacturing cost on the substrate of certain unit area.
2. the utility model can produce maximum micropores on the substrate of certain unit area, so can improve its acoustic absorptivity, effectively reduces noise, so as to reaching best noise abatement effect.
3. the substrate of making according to the utility model, have that light weight, nontoxic, fire prevention, anti-salinity, anti-aqueous vapor, acoustic absorptivity height, life-span are long, color-variableization and be easy to effect such as cutting installation, it mainly applies to the place of high temperature, high humidity, ultra-clean and high velocity air, prevent and treat industry as coherent noises such as building, construction, air-conditioning, machinery, electronics, medical treatment, communications and transportation, can become a kind of dustproof, fire prevention, waterproof, nontoxic permanance abatvoix.
Description of drawings
Fig. 1 is a partial perspective view of the present utility model;
Fig. 2 is a local top view of the present utility model;
Fig. 3 is for making the broken line graph of acoustic absorptivity test according to the made micropore individual layer sound-absorbing sheet metal of the utility model;
Fig. 4 is for making the broken line graph of acoustic absorptivity test according to the made microporous bilayer sound-absorbing sheet metal of the utility model;
Fig. 5 is for making the broken line graph that acoustic absorptivity is tested according to the made sound-absorbing sheet metal of the utility model and other various pore formula abatvoixs and general flat board.
[main element symbol description]
1 substrate, 11 first surfaces, 12 second surfaces
13 sides, 2 linear groove, 3 recessed grooves
4 micropore M1 minimum widith N thickness
Embodiment
As shown in Figures 1 and 2, the utility model comprises a substrate 1, plural linear groove 2 and plural recessed groove 3, wherein:
Plural number linear groove 2, each linear groove 2 is arranged in parallel the first surface 11 in substrate 1, and each linear groove 2 is gradually-reducing shape on the direction perpendicular to first surface 11, and each linear groove 2 is parallel to a side 13 of substrate 1.
Plural number recessed groove 3, be positioned at the second surface 12 of substrate 1, each recessed groove 3 is gradually-reducing shape on the direction perpendicular to second surface 12, all recessed groove 3 cloth are made as many row's kenels, every row's recessed groove 3 is corresponding to the linear groove 2 of substrate 1 first surface 11, this recessed groove 3 is a polygon groove, and as shown in FIG., this polygon groove is a vee gutter.
The linear groove 2 of above-mentioned first surface 11 connects with the recessed groove 3 of second surface 12, and the confluce of its perforation forms a micropore 4, and the minimum widith M of this micropore 4 is less than the thickness N of substrate 1.
As shown in Figure 2, every row's recessed groove 3 of substrate 1 second surface 12,3 one-tenth equidistant arrangements of its each recessed groove, and every row's recessed groove 3 of this substrate 1 second surface 12,3 of the recessed grooves of the system row of being adjacent have the distance of staggering, this distance slot pitch less than two adjacent recessed grooves 3 on the linear direction that staggers along the linear direction of linear groove 2, as shown in FIG., above-mentioned staggering apart from 1/2nd of the slot pitch that equals two adjacent recessed grooves 3 on the linear direction.
In addition, the minimum widith M of above-mentioned micropore 4 is less than the thickness N of substrate, and this micropore 4 is being parallel to width on linear groove 2 linear directions greater than perpendicular to the width on linear groove 2 linear directions.
Therefore substrate 1 of the present utility model can mold about 400000 micropores in every square centimeter, and see through the vee gutter design of gradually-reducing shape, other cooperates the thickness N of the minimum widith M of micropore 4 less than substrate 1, make the utility model possess good sound-absorbing effect, the test specification of its micropore individual layer and double-deck sound-absorbing sheet metal is thickness of slab 1.0mm, how much holes of aperture 0.08mm, 25 ℃ of temperature, humidity 60%, the acoustic absorptivity of each interval is then according to CNS 9056 requirements, the sound-absorbing sheet metal test data of micropore individual layer as shown in Table 1, the broken line graph of acoustic absorptivity test is as shown in Figure 3.
| Air layer | 50mm | 100mm | 200mm | 500mm |
| Centre frequency (Hz) | Acoustic absorptivity (1/3) Octave | Acoustic absorptivity (1/3) Octave | Acoustic absorptivity (1/3) Octave | Acoustic absorptivity (1/3) Octave |
| 125 | 0.01 | 0.09 | 0.30 | 0.85 |
| 160 | 0.09 | 0.19 | 0.40 | 0.76 |
| 200 | 0.15 | 0.25 | 0.45 | 0.68 |
| 250 | 0.17 | 0.39 | 0.66 | 0.70 |
| 315 | 0.25 | 0.51 | 0.80 | 0.57 |
| 400 | 0.34 | 0.61 | 0.75 | 0.50 |
| Air layer | 50mm | 100mm | 200mm | 500mm |
| 500 | 0.48 | 0.75 | 0.81 | 0.58 |
| 630 | 0.56 | 0.78 | 0.74 | 0.61 |
| 800 | 0.68 | 0.85 | 0.61 | 0.58 |
| 1k | 0.75 | 0.81 | 0.58 | 0.67 |
| 1.25k | 0.75 | 0.75 | 0.64 | 0.67 |
| 1.6k | 0.76 | 0.68 | 0.66 | 0.63 |
| 2k | 0.76 | 0.55 | 0.61 | 0.65 |
| 2.5k | 0.74 | 0.57 | 0.65 | 0.66 |
| 3.15k | 0.66 | 0.63 | 0.66 | 0.67 |
| 4k | 0.61 | 0.59 | 0.67 | 0.61 |
| NRC | 0.55 | 0.65 | 0.65 | 0.65 |
Table one
Wherein the single-layer metal plate is after tested when air layer 50mm, and centre frequency is when being 2kHz, and acoustic absorptivity is up to 0.76; When air layer 100mm, and centre frequency is when being 800Hz, and acoustic absorptivity is up to 0.85; When air layer 200mm, and centre frequency is when being 500Hz, and acoustic absorptivity is up to 0.81; When air layer 500mm, and centre frequency is when being 125Hz, and acoustic absorptivity is up to 0.85.
And the sound-absorbing sheet metal test data of microporous bilayer as shown in Table 2, and the broken line graph of acoustic absorptivity test as shown in Figure 4.
| Double-deck spacing | 50mm | 50mm | 100mm |
| Air layer | 50mm | 100mm | 100mm |
| Centre frequency (Hz) | Acoustic absorptivity (1/3) Octave | Acoustic absorptivity (1/3) Octave | Acoustic absorptivity (1/3) Octave |
| Double-deck spacing | 50mm | 50mm | |
| 125 | 0.33 | 0.21 | 0.35 |
| 160 | 0.49 | 0.37 | 0.36 |
| 200 | 0.48 | 0.59 | 0.65 |
| 250 | 0.75 | 0.76 | 0.88 |
| 315 | 0.82 | 0.76 | 0.91 |
| 400 | 0.83 | 0.79 | 0.90 |
| 500 | 0.77 | 0.89 | 0.88 |
| 630 | 0.77 | 0.88 | 0.92 |
| 800 | 0.77 | 0.88 | 0.90 |
| 1k | 0.80 | 0.89 | 0.87 |
| 1.25k | 0.74 | 0.86 | 0.86 |
| 1.6k | 0.72 | 0.85 | 0.78 |
| 2k | 0.68 | 0.80 | 0.72 |
| 2.5k | 0.59 | 0.77 | 0.75 |
| 3.15k | 0.56 | 0.69 | 0.71 |
| 4k | 0.41 | 0.66 | 0.67 |
| NRC | 0.75 | 0.85 | 0.85 |
Table two
The sound-absorbing sheet metal of microporous bilayer again, the thickness of slab of test sample book is that 1.0mm, aperture are that how much holes, the probe temperatures of 0.08mm are that 25 ℃, testing humidity are 60%, the acoustic absorptivity of each interval is then according to CNS 9056 requirements, after tested when double-deck spacing is 50mm, air layer 50mm, and centre frequency is when being 400Hz, and acoustic absorptivity is up to 0.83; When double-deck spacing is 50mm, air layer 100mm, and centre frequency is when being 1kHz, and acoustic absorptivity is up to 0.89; When double-deck spacing is 100mm, air layer 100mm, and centre frequency is when being 630Hz, and acoustic absorptivity is up to 0.92.
In addition with the utility model and other various pore formula abatvoixs and generally dull and stereotypedly do test relatively, test data as shown in Table 3, the broken line graph that acoustic absorptivity is tested is as shown in Figure 5.
| Product | The present invention | Abatvoix A | Abatvoix B | Abatvoix C | Dull and stereotyped |
| Hole count | 400,000 holes/M2 | 40,000 holes/M2 | 40,000 holes/M2 | 55,555 holes/M2 | Impunctate |
| Thickness of slab mm aperture mm | The high 0.1 Restrain-anger Heng in thickness of slab 1.0 holes | Thickness of slab 0.5 aperture 0.45 | Thickness of slab 0.5～0.6 hole is high by 0.5～0.6 | Thickness of slab 0.5～2 hole is high by 20～3.5 | Thickness of slab is below 1.0 |
| Centre frequency | Acoustic absorptivity | Acoustic absorptivity | Acoustic absorptivity | Acoustic absorptivity | Acoustic absorptivity |
| (Hz) | (1/3)Octave | (1/3)Octave | (1/3)Octave | (1/3)Octave | (1/3)Octave |
| 100 | 0.26 | 0.16 | 0.12 | 0.01 | 0.07 |
| 125 | 0.25 | 0.37 | 0.15 | 0.02 | 0.09 |
| 160 | 0.30 | 0.41 | 0.20 | 0.04 | 0.05 |
| 200 | 0.48 | 0.52 | 0.20 | 0.12 | 0.15 |
| 250 | 0.71 | 0.65 | 0.30 | 0.11 | 0.41 |
| 315 | 0.80 | 0.71 | 0.37 | 0.16 | 0.31 |
| 400 | 0.83 | 0.74 | 0.35 | 0.21 | 0.30 |
| 500 | 0.92 | 0.66 | 0.32 | 0.14 | 0.16 |
| 630 | 0.78 | 0.50 | 0.24 | 0.12 | 0.13 |
| 800 | 0.62 | 0.36 | 0.19 | 0.11 | 0.07 |
| 1k | 0.56 | 0.41 | 0.25 | 0.10 | 0.05 |
| 1.25k | 0.65 | 0.50 | 0.27 | 0.10 | 0.04 |
| 1.6k | 0.66 | 0.42 | 0.25 | 0.11 | 0.02 |
| 2k | 0.58 | 0.35 | 0.28 | 0.13 | 0.01 |
| Product | The present invention | Abatvoix A | Abatvoix B | Abatvoix C | Dull and stereotyped |
| 2.5k | 0.53 | 0.27 | 0.28 | 0.14 | -0.02 |
| 3.15k | 0.59 | 0.20 | 0.27 | 0.14 | -0.01 |
| 4k | 0.56 | 0.17 | 0.25 | 0.14 | -0.05 |
| 5k | 0.50 | 0.10 | 0.12 | 0.13 | -0.05 |
| NRC | 0.70 | 0.50 | 0.30 | 0.15 | 0.15 |
Table three
Wherein abatvoix A has 40000 pores for every square centimeter, thickness of slab 0.5mm, and the minimum-value aperture of pore is 0.45mm; Abatvoix B has 40000 pores for every square centimeter, and thickness of slab is 0.5mm to 0.6mm, and the minimum-value aperture of pore is 0.5mm to 0.6mm; Abatvoix C has 55555 pores for every square centimeter, and thickness of slab is 0.5mm to 2mm, and the minimum-value aperture of pore is 2.0mm to 3.5mm; Flat board is impunctate then, thickness of slab is between the 0.5mm to 1.0mm, every square centimeter of hole count of the present utility model is up to 400,000 holes, at thickness of slab 1.0mm and the high 0.1mm in hole when following, when centre frequency 500Hz, acoustic absorptivity more can be up to 0.92, acoustic absorptivity is put up the best performance, and the utility model acoustic absorptivity (NRC) mean value is 0.7, and its acoustic absorptivity mean value of other abatvoixs (do not have the back of the body paste sound absorber) is only up to 0.5, and the utility model sound-absorbing effect is much better than existing poriness sound-absorbing sheet material with general dull and stereotyped.
Claims (10)
1. sheet metal with micropore is characterized in that it comprises:
One substrate includes a first surface, with respect to a second surface of first surface, and is adjacent to plural side between first surface and the second surface;
The plural number linear groove, each linear groove is arranged in parallel the first surface in substrate, and each linear groove is gradually-reducing shape on the direction perpendicular to first surface;
The plural number recessed groove, be positioned at the second surface of substrate, each recessed groove is gradually-reducing shape on the direction perpendicular to second surface, all recessed groove cloth are made as many row's kenels, every row's recessed groove is corresponding to the linear groove of substrate first surface, and the linear groove of first surface and the recessed groove of second surface connect, and the confluce of its perforation forms a micropore, and the minimum widith of micropore is less than the thickness of substrate.
2. have the sheet metal of micropore according to claim 1, it is characterized in that: the micropore number on the described substrate is between every square centimeter 80000 to 450000.
3. have the sheet metal of micropore according to claim 1, it is characterized in that: the micropore number on the described substrate is between every square centimeter 250000 to 400000.
4. have the sheet metal of micropore according to claim 1, it is characterized in that: described each linear groove is parallel to a side of substrate.
5. have the sheet metal of micropore according to claim 1, it is characterized in that: described recessed groove is the polygon groove of a gradually-reducing shape.
6. as having the sheet metal of micropore as described in the claim 5, it is characterized in that: described polygon groove is the vee gutter of a gradually-reducing shape.
7. have the sheet metal of micropore according to claim 1, it is characterized in that: every row's recessed groove of described substrate second surface, its each recessed groove become equidistant and arrange.
8. as having the sheet metal of micropore as described in the claim 7, it is characterized in that: every row's recessed groove of described substrate second surface, between the recessed groove of the system row of being adjacent, has the distance of staggering, this distance slot pitch that staggers less than two adjacent recessed grooves on the linear direction along the linear direction of linear groove.
9. as having the sheet metal of micropore as described in the claim 8, it is characterized in that: the described distance that staggers equal two adjacent recessed grooves on the linear direction slot pitch 1/2nd.
10. have the sheet metal of micropore according to claim 1, it is characterized in that: described micropore is being parallel to width on the linear groove linear direction greater than perpendicular to the width on the linear groove linear direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201703545U CN201556412U (en) | 2009-08-13 | 2009-08-13 | Sheet metal with microscopic holes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201703545U CN201556412U (en) | 2009-08-13 | 2009-08-13 | Sheet metal with microscopic holes |
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| Publication Number | Publication Date |
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| CN201556412U true CN201556412U (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201703545U Ceased CN201556412U (en) | 2009-08-13 | 2009-08-13 | Sheet metal with microscopic holes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002723A (en) * | 2011-09-08 | 2013-03-27 | 青钢金属建材股份有限公司 | Electromagnetic wave filter resistance plate structure |
| CN107438881A (en) * | 2015-04-10 | 2017-12-05 | Mra系统有限公司 | Sound serves as a contrast and the method for construction sound lining |
| CN109386065A (en) * | 2017-08-11 | 2019-02-26 | 泰奇想股份有限公司 | Composite leveling expansion type sound-absorbing board with stretching convex part and leveling convex part |
| CN112222292A (en) * | 2020-10-14 | 2021-01-15 | 四川昆昱环保科技有限责任公司 | Method for manufacturing micropores in metal plate |
-
2009
- 2009-08-13 CN CN2009201703545U patent/CN201556412U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002723A (en) * | 2011-09-08 | 2013-03-27 | 青钢金属建材股份有限公司 | Electromagnetic wave filter resistance plate structure |
| CN107438881A (en) * | 2015-04-10 | 2017-12-05 | Mra系统有限公司 | Sound serves as a contrast and the method for construction sound lining |
| CN109386065A (en) * | 2017-08-11 | 2019-02-26 | 泰奇想股份有限公司 | Composite leveling expansion type sound-absorbing board with stretching convex part and leveling convex part |
| CN112222292A (en) * | 2020-10-14 | 2021-01-15 | 四川昆昱环保科技有限责任公司 | Method for manufacturing micropores in metal plate |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20111212 Decision number of declaring invalidation: 17688 Granted publication date: 20100818 |