CN112983897A - Integrated sound insulation cover and air inlet silencer - Google Patents
Integrated sound insulation cover and air inlet silencer Download PDFInfo
- Publication number
- CN112983897A CN112983897A CN202110319639.6A CN202110319639A CN112983897A CN 112983897 A CN112983897 A CN 112983897A CN 202110319639 A CN202110319639 A CN 202110319639A CN 112983897 A CN112983897 A CN 112983897A
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- Prior art keywords
- sound
- insulation cover
- silencer
- sound insulation
- fibers
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- Pending
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- 238000009413 insulation Methods 0.000 title claims abstract description 42
- 230000003584 silencer Effects 0.000 title claims abstract description 35
- 238000010521 absorption reaction Methods 0.000 claims abstract description 49
- 239000000835 fiber Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 239000011358 absorbing material Substances 0.000 abstract description 9
- 239000012528 membrane Substances 0.000 abstract description 5
- 239000006096 absorbing agent Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 230000030279 gene silencing Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0033—Pulsation and noise damping means with encapsulations
- F04B39/0038—Pulsation and noise damping means with encapsulations of inlet or outlet channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention relates to an integrated sound insulation cover and air inlet silencer, which is characterized in that: including the sound insulation cover and the silencer that are used for keeping apart gas pressure feed machine, the sound insulation cover includes curb plate and top cap, a plurality of curb plates enclose and form the square frame structure, top cap demountable installation is on the curb plate top, the top cap middle part is provided with the net board, the silencer includes the perforation shell, the sound-absorbing membrane, sound-absorbing material and shrouding, the perforation shell is installed on the net board, sound-absorbing membrane parcel sound-absorbing material fills in the perforation shell, the shrouding is installed on one side that the perforation shell deviates from the net board, sound-absorbing material comprises a plurality of fibre range upon range of, the diameter and the density of a plurality of fibre thickness directions are. The silencer is arranged on the top cover of the sound insulation cover and is connected with the top cover of the sound insulation cover into a whole, so that the plane area of the sound insulation cover is not occupied, and the occupied area is small; the sound absorber uses the perforation sound absorption structure, the sound absorption membrane, the sound absorption material absorb sound at the same time, absorb the noise of different wavelength at the same time, the sound absorption coefficient reaches more than 0.995.
Description
Technical Field
The invention relates to the technical field of silencing and sound insulating equipment, in particular to an integrated sound insulating cover and an air inlet silencer.
Background
The noise of the air pressure conveyer (such as a fan and a compressor) in the market is very large. The noise of the main engine is generally controlled by adopting a sound insulation cover to seal the main engine, and raw material air required by the main engine enters the cover through an air inlet silencer arranged on the vertical wall of the sound insulation cover and is used by a gas pressure conveyer. The sound insulation cover is generally square, and a gas pressure conveyer (such as a fan and a compressor) generating a noise source is sealed in the sound insulation cover, and an air inlet silencer are arranged on the vertical wall of the sound insulation cover to supply raw material air for the gas pressure conveyer. The side wall of the existing sound insulation cover is provided with the air inlet silencer, and the problems that 1, the air inlet silencer is arranged on the vertical wall of the sound insulation cover, so that the projection area of the sound insulation cover and the air inlet silencer is large, the occupied plane area is large, and the space of gas equipment is occupied; 2. the air inlet silencer has complex airflow path, long path, large resistance and undesirable silencing effect; 3. because the noise elimination amount of the silencer is in direct proportion to the sound absorption area, in order to achieve the purpose of maximum noise elimination amount, the overall dimension of the silencer has to be increased, so that the occupied area of the air inlet silencer and the air inlet is large, the vertical wall area of the sound insulation cover is forced to be enlarged, the overall dimension of the sound insulation cover is also increased, and the sound insulation cover becomes huge.
Disclosure of Invention
Therefore, it is necessary to provide an integrated sound insulation cover and intake silencer for the case where the sound insulation and silencing of the conventional gas pressure conveyer are not satisfactory.
The integrated sound insulation cover and air inlet silencer comprises a sound insulation cover and a silencer, wherein the sound insulation cover is used for isolating a gas pressure feeder and comprises side plates and a top cover, the side plates are enclosed to form a square frame structure, the top cover is detachably mounted at the top ends of the side plates, a grid plate is arranged in the middle of the top cover, the silencer comprises a perforated shell, a sound absorption film, a sound absorption material and a sealing plate, the perforated shell is mounted on the grid plate, the sound absorption film wraps the sound absorption material and is filled in the perforated shell, the sealing plate is mounted on one side, deviating from the grid plate, of the perforated shell, the sound absorption material is formed by stacking a plurality of fibers, and the diameter and the density of the fibers in the thickness direction are in gradient change.
Preferably, when the gas pressure feeder emits high-frequency noise, the diameter of the fibers arranged from the sound-facing surface to the back sound-facing surface is from small to large, and the density of the fibers is from large to small.
Preferably, when the air pressure conveyer emits low-frequency noise, the diameter of the fibers arranged from the sound-facing surface to the back sound-facing surface is from coarse to fine, and the density of the fibers is from small to large.
Preferably, the top cover is provided with a clamping groove around, and one end of the side plate is clamped in the clamping groove.
Preferably, the sound absorption film is made of polyvinyl chloride or polytetrafluoroethylene.
Preferably, the fibers are glass fibers or organic fibers.
Preferably, the perforated shell is a plate-shaped hexahedron, angle steel is arranged on the edge of the perforated shell, and the perforated shells are welded together by the angle steel.
Preferably, the side plate comprises a steel plate and an energy absorption layer from outside to inside, and the energy absorption layer is adhered to the inner side wall of the steel plate.
Preferably, the surface of the energy absorption layer is concave-convex, and the energy absorption layer is a film-coated sponge.
Preferably, the bottom of the steel plate is provided with an extension edge, and the extension edge is provided with a groove.
The invention has the advantages that: 1. the silencer is arranged on the top cover of the sound insulation cover and is connected with the top cover of the sound insulation cover into a whole, the plane area of the sound insulation cover is not only occupied, the length and width dimensions are reduced, and the occupied area is small; 2. the sound absorber is a perforated sound absorption structure, the sound absorption film and the sound absorption material absorb sound at the same time, the sound absorber absorbs noise with different wavelengths at the same time, the sound absorption efficiency of low, medium and high frequency noise is high, and the sound absorption coefficient is more than 0.995; 3. the silencer is arranged at the top of the sound insulation cover, air can be simultaneously fed in four directions, the sound absorption area is large, the area of an airflow channel is large, the flow speed is low, the resistance is small, the sound absorption material has density gradient and fiber diameter gradient, the sound absorption capacity is large, the cut-off frequency is wide, and the sound attenuation effect is extremely good; 4. the top cover, the silencer and the sealing plate do not need to use connecting pieces, and the disassembly and the assembly are very convenient.
Drawings
FIG. 1 is a schematic view of an integrated acoustic hood, intake silencer, and gas pressure feeder assembly according to an embodiment;
FIG. 2 is a perspective view of the integrated sound shield and intake silencer;
FIG. 3 is an exploded view of the integrated acoustic enclosure and intake silencer;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a perspective view of the perforated shell;
FIG. 6 is a schematic view of a muffler configuration;
fig. 7 is a perspective view of the sound-proof cover.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the integrated sound insulation cover and intake silencer includes a sound insulation cover 1 and a silencer 2 for isolating an air pressure feeder, where the sound insulation cover 1 includes a side plate 11 and a top cover 12, the side plates 11 are enclosed to form a square frame structure, the top cover 12 is detachably mounted at one end of the side plate 11, a grid plate 121 is disposed in the middle of the top cover 12, the silencer 2 includes a perforated shell 21, a sound absorption membrane 22, a sound absorption material 23, and a sealing plate 24, the perforated shell 21 is mounted on the grid plate 121, the sound absorption membrane 22 wraps the sound absorption material 23 and fills the perforated shell 21, the sealing plate 24 is mounted on a side of the perforated shell 21 away from the grid plate 121, the sound absorption material 23 is formed by stacking a plurality of fibers, and diameters and densities in a plurality of fiber thickness directions are changed in a gradient manner. Specifically, in the present embodiment, the gas pumping machine 100 is installed in the sound-proof cover 1, and the sound-proof cover 1 is used to isolate the gas pumping machine 100 from the outside, so that the noise generated by the gas pumping machine 100 is absorbed by the muffler 2 and the sound-proof cover 1, thereby effectively reducing the noise. Further, in order to reduce the floor area of the sound insulation cover 1, the muffler 2 is arranged on the top of the sound insulation cover 1, and in order to facilitate ventilation, a grid plate 121 is arranged on the top cover 12 of the sound insulation cover 1, wherein the grid plate 121 is a grid-shaped support welded by using flat steel and used for supporting the muffler 2, and air can conveniently enter the sound insulation cover 1 through the grid plate 121. Further, the muffler 2 includes a perforated shell 21, a sound absorbing film 22 and a sound absorbing material 23, wherein the perforated shell 21 is formed by welding perforated plates and has a porous structure, external air enters through holes in the perforated shell 21, air forms an air column through small holes in the perforated shell 21, and the air column vibrates under the action of sound waves to consume sound energy and play a role in silencing. After being attenuated by the holes on the perforated shell 21, the sound waves are continuously transmitted into the sound absorption film 22 and the sound absorption material 23 and are continuously attenuated, so that the aim of sound attenuation is fulfilled. It should be noted that the sound absorbing film 22 wraps the sound absorbing material 23 made of fibers to prevent the fibers from overflowing from the perforated shell 21 and polluting the environment after being vibrated. The sound-absorbing film 22 is stuck inside the perforated shell 21, preventing the sound-absorbing film 22 from being displaced by vibration inside the perforated shell 21. The sound-absorbing film 22 is provided with a plurality of layers of fibers, and when outside air enters the sound-insulating cover 1 through the perforated shell 21, the sound-absorbing film 22 and the sound-absorbing material 23 made of the plurality of layers of fibers, the outside air is sucked by the air pump 100 and is output after being pressurized. It should be noted that, since the sound wave frequencies caused by different powers of the air pressure feeders 100 are different, when the sound absorbing material 23 is designed to be i, ii, and iii fibers having a certain thickness (three layers of fiber layers are designed in this embodiment, and other numbers of layers of fiber layers may be also designed in other embodiments, which are not specifically limited herein), the diameters and densities of the fibers in different layers are changed in a stepwise manner, and when air passes through the i, ii, and iii fibers in sequence, the sound absorbing amount is large, the cutoff frequency is wide, and the sound absorbing effect is better. Further, shrouding 24 sets up at perforated shell 21 top, and shrouding 24 both is the component part of silencer 2, can also cooperate top cap 12 simultaneously to be as the sound insulation part, utilizes scissors 200 to be connected shrouding 24 and top cap 12 and be integrative, and then with silencer 2 fixed mounting on grid plate 121 for shrouding 24 and perforated shell 21 top butt are lived, play the effect of shutoff sound insulation.
As shown in fig. 2 to 3, when the air pressure feeder emits high-frequency noise, the diameter of the fibers arranged from the sound-facing surface to the back sound-facing surface is from small to large, and the density of the fibers is from large to small. Specifically, in this embodiment, when an air compressor is used as the air pressure feeder 100, the air compressor emits high-frequency sound waves (more than 1 KHZ) when operating, the diameters of the i, ii, and iii fibers gradually increase from the sound-facing surface to the sound-backing surface, and the density gradually decreases, so that the sound-absorbing material 23 can sufficiently absorb the high-frequency sound waves emitted by the air compressor, thereby improving the sound-absorbing effect.
As shown in fig. 2 to 3, when the air pressure feeder emits low-frequency noise, the diameter of the fibers arranged from the sound-facing surface to the back sound-facing surface is from thick to thin, and the density of the fibers is from small to large. Specifically, in this embodiment, when the exhaust fan is used as the air pressure feeder 100, when the exhaust fan is operated, low-frequency sound waves (below 500 HZ) are emitted, the diameters of the i, ii, and iii fibers gradually decrease from the sound-facing surface to the back sound-facing surface, and the density gradually increases, so that the sound-absorbing material 23 can sufficiently absorb the low-frequency sound waves emitted by the exhaust fan, thereby improving the sound-deadening effect.
As shown in fig. 2 to 3, a clamping groove 122 is formed around the top cover 12, and one end of the side plate 11 is clamped in the clamping groove 122. Specifically, set up the draw-in groove 122 that the angle steel was made around top cap 12, convenient to use draw-in groove 122 and 11 tip joints of curb plate need not to use other connecting pieces or weld, and the direct use loop wheel machine of being convenient for is directly hung top cap 12 and is installed at 11 tops of curb plate, and the equipment is convenient.
In this embodiment, the sound absorbing film 22 is made of polyvinyl chloride or polytetrafluoroethylene, and the fibers are glass fibers or organic fibers. The sound absorption film made of polyvinyl chloride or polytetrafluoroethylene has good moisture resistance, prevents fibers from being damped, and reduces the noise reduction effect. The glass fiber has strong heat resistance, good corrosion resistance and long service life.
As shown in fig. 2 to 3, the perforated shell 21 is a plate-shaped hexahedron, an angle steel 211 is disposed at an edge of the perforated shell 21, and the perforated shells 21 are welded together by the angle steel. Specifically, since the closing plates 24 are provided on the top of the perforated shell 21, four sides of the perforated shell 21 can simultaneously intake air, and the perforated shell has a large sound absorption area, a large airflow passage area, a low flow rate, and a low resistance. 3 silencer 2 in this embodiment are installed side by side and are placed on grid plate 121, use angle steel 211 to constitute three perforation shell 21 welding an organic whole, be convenient for adopt the mode of hoist and mount to lay three perforation shell 21 on grid plate 121 to use angle steel 211 to keep apart two perforation shell 21 lateral walls, avoid the gas circulation not smooth.
As shown in fig. 2 and 4, the side plate 11 includes a steel plate 111 and an energy absorption layer 112 from outside to inside, and the energy absorption layer 112 is adhered to the inner side wall of the steel plate 111. Specifically, in the present embodiment, the energy absorbing layer 12 is attached to the inner surface of the steel plate 111 for absorbing sound waves, and can effectively insulate sound and cut off the propagation path of noise.
Furthermore, the surface of the energy absorption layer 112 is concave-convex, and the energy absorption layer 112 is a film-coated sponge. The surface of the energy absorption layer 112 is designed to be concave-convex, so that the sound insulation and shock absorption effects of the energy absorption layer 112 are improved, and the solid sound transmission of the steel plate 111 is avoided. The sponge with the surface coating is used for absorbing sound, the sound is consumed by the micropores in the sponge, sound energy is converted into heat energy, the noise transmission is blocked, the sponge surface coating is not easy to age, and the service life is longer.
As shown in fig. 4, the bottom of the steel plate 111 is provided with an extension 113, and the extension 113 is provided with a groove 114. Specifically, in this embodiment, the staff directly places sound insulation cover 1 on ground, relies on self weight, can flatten the rubber circle of packing in recess 114, packs the rubber circle in recess 114, and rubber circle and ground butt play the cushioning effect, and bottom and ground bump firmly when avoiding sound insulation cover 1 to vibrate send the noise.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. Integrated sound insulation cover and air intake silencer, its characterized in that: the sound insulation cover comprises a side plate and a top cover, the side plate is enclosed to form a square frame structure, the top cover is detachably mounted at the top end of the side plate, a grid plate is arranged in the middle of the top cover, the silencer comprises a perforated shell, a sound absorption film, a sound absorption material and a sealing plate, the perforated shell is mounted on the grid plate, the sound absorption film wraps the sound absorption material and is filled in the perforated shell, the sealing plate is mounted on one side, deviating from the grid plate, of the perforated shell, the sound absorption material is formed by stacking a plurality of fibers, and the diameter and the density of the fibers in the thickness direction are in gradient change.
2. The integrated acoustic hood and intake air muffler of claim 1, wherein: when the gas pressure conveyer emits high-frequency noise, the diameter of the fiber arranged from the sound-facing surface to the back sound-facing surface is from thin to thick, and the density of the fiber is from large to small.
3. The integrated acoustic hood and intake air muffler of claim 1, wherein: when the air pressure conveyer emits low-frequency noise, the diameter of the fibers arranged from the sound-facing surface to the back sound-facing surface is from coarse to fine, and the density of the fibers is from small to large.
4. The integrated sound-proof cover and air intake silencer of claim 2 or 3, wherein: the top cover is provided with the draw-in groove all around, curb plate one end joint is in the draw-in groove.
5. The integrated acoustic hood and intake air muffler of claim 4, wherein: the sound absorption film is made of polyvinyl chloride or polytetrafluoroethylene.
6. The integrated acoustic hood and intake air muffler of claim 5, wherein: the fibers are glass fibers or organic fibers.
7. The integrated acoustic hood and intake air muffler of claim 6, wherein: the perforated shell is a plate-shaped hexahedron, angle steel is arranged on the edge of the perforated shell, and the perforated shells are welded into a whole by the angle steel.
8. The integrated acoustic hood and intake air muffler of claim 7, wherein: the side plate comprises a steel plate and an energy absorption layer from outside to inside, and the energy absorption layer is adhered to the inner side wall of the steel plate.
9. The integrated acoustic hood and intake air muffler of claim 8, wherein: the surface of the energy absorption layer is concave-convex, and the energy absorption layer is a film-coated sponge.
10. The integrated acoustic hood and intake air muffler of claim 9, wherein: the bottom of the steel plate is provided with an extending edge, and the extending edge is provided with a groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319639.6A CN112983897A (en) | 2021-03-25 | 2021-03-25 | Integrated sound insulation cover and air inlet silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319639.6A CN112983897A (en) | 2021-03-25 | 2021-03-25 | Integrated sound insulation cover and air inlet silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983897A true CN112983897A (en) | 2021-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110319639.6A Pending CN112983897A (en) | 2021-03-25 | 2021-03-25 | Integrated sound insulation cover and air inlet silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112983897A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2432275Y (en) * | 2000-04-21 | 2001-05-30 | 北京市劳动保护科学研究所 | Environmental protection high efficient sound absorber |
| CN205189156U (en) * | 2015-12-03 | 2016-04-27 | 厦门有为实业有限公司 | Sound sponge inhales |
| CN106762853A (en) * | 2017-01-10 | 2017-05-31 | 吴光明 | A kind of denoising device for industrial fan |
| US20170268824A1 (en) * | 2016-03-18 | 2017-09-21 | Xiamen Jiada Environmental Construction Engineering Co., Ltd. | Ventilation and Noise Reduction System for Centralized Cooling Tower |
| CN207420979U (en) * | 2017-10-12 | 2018-05-29 | 泰兴市泰豪减速机厂 | A kind of sound arrester for wind turbine |
| CN111577577A (en) * | 2020-04-26 | 2020-08-25 | 株洲时代新材料科技股份有限公司 | Sound insulation cover, design method of sound insulation cover and sound insulation method of compressor |
-
2021
- 2021-03-25 CN CN202110319639.6A patent/CN112983897A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2432275Y (en) * | 2000-04-21 | 2001-05-30 | 北京市劳动保护科学研究所 | Environmental protection high efficient sound absorber |
| CN205189156U (en) * | 2015-12-03 | 2016-04-27 | 厦门有为实业有限公司 | Sound sponge inhales |
| US20170268824A1 (en) * | 2016-03-18 | 2017-09-21 | Xiamen Jiada Environmental Construction Engineering Co., Ltd. | Ventilation and Noise Reduction System for Centralized Cooling Tower |
| CN106762853A (en) * | 2017-01-10 | 2017-05-31 | 吴光明 | A kind of denoising device for industrial fan |
| CN207420979U (en) * | 2017-10-12 | 2018-05-29 | 泰兴市泰豪减速机厂 | A kind of sound arrester for wind turbine |
| CN111577577A (en) * | 2020-04-26 | 2020-08-25 | 株洲时代新材料科技股份有限公司 | Sound insulation cover, design method of sound insulation cover and sound insulation method of compressor |
Non-Patent Citations (1)
| Title |
|---|
| 张沛商: "《实用噪声控制技术》" * |
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Application publication date: 20210618 |