CN112061365A - Indoor noise reduction device for ocean passenger ship - Google Patents
Indoor noise reduction device for ocean passenger ship Download PDFInfo
- Publication number
- CN112061365A CN112061365A CN202010793818.9A CN202010793818A CN112061365A CN 112061365 A CN112061365 A CN 112061365A CN 202010793818 A CN202010793818 A CN 202010793818A CN 112061365 A CN112061365 A CN 112061365A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- pipe
- ventilating
- making
- air
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/02—Ventilation; Air-conditioning
- B63J2/10—Ventilating-shafts; Air-scoops
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/02—Ventilation; Air-conditioning
- B63J2/04—Ventilation; Air-conditioning of living spaces
-
- 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
-
- 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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an indoor noise reduction device for an ocean passenger ship, which comprises a noise reduction ventilating duct, wherein the noise reduction ventilating duct is composed of an outer barrel, an inner barrel and sound absorption foam filled between the outer barrel and the inner barrel; the noise reduction ventilating duct is internally provided with a plurality of first partition plates, second partition plates and third partition plates which are made of centrifugal glass wool materials, so that airflow is dispersed and buffered to a certain extent; impeller centrifugal fan is connected with fixed frame through damper, can reduce the noise that is brought by the vibration of fan for the fan operation is quieter.
Description
Technical Field
The invention belongs to the field of protection of ocean passenger ship facilities, and particularly relates to an indoor noise reduction device for an ocean passenger ship.
Background
The conventional ocean passenger ship actually refers to a tourist passenger ship sailing in the ocean, and for the ocean passenger ship, the passenger capacity of the ocean passenger ship is large, so that a large ventilation facility is needed to meet the requirements of internal facilities of the ocean passenger ship and tourists, the ventilation uses a centrifugal fan which is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, but the centrifugal fan generates certain noise in the use process, generally, flowing air generates rotational flow in the ventilator, the shell of the ventilator vibrates to generate the noise, and the comfortable environment of the tourists in the rooms is affected.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide an indoor noise reduction device for ocean-going passenger ships.
In order to solve the above problems, the present invention provides a technical solution:
an indoor noise reduction device for ocean passenger ships comprises a noise reduction ventilating duct which is composed of an outer barrel, an inner barrel and sound absorption foam filled between the outer barrel and the inner barrel, one end of the noise reduction ventilating duct is connected with an air inlet hopper, the air inlet hopper is connected with the noise reduction ventilating duct through a fixing bolt, the air inlet hopper is close to one end of the noise reduction ventilating duct and is connected with a first ventilating duct in the noise reduction ventilating duct, a plurality of first noise reduction holes are uniformly formed in the surface of the first ventilation pipe, one end of the first ventilation pipe, which is far away from the air inlet hopper, is connected with a second ventilation pipe, a plurality of second noise reduction holes are uniformly arranged on the surface of the second ventilating pipe, a filter screen is connected between the first ventilating pipe and the second ventilating pipe, the air pipe of making an uproar falls is kept away from the one end of air inlet fill and is connected with air flow control mechanism, air flow control mechanism keeps away from the one end of making an uproar air pipe of falling and is connected with air inlet mechanism.
As preferred, No. two ventilation pipes are kept away from in one side of a ventilation pipe and are being equipped with a baffle in falling the air pipe of making an uproar, evenly be equipped with a plurality of No. three holes of making an uproar on the baffle, No. one the baffle is kept away from in one side of No. two ventilation pipes and is being equipped with No. two baffles in falling the air pipe of making an uproar, evenly be equipped with a plurality of No. four holes of making an uproar on No. two baffles, No. two baffles are kept away from in one side of a baffle and are being equipped with No. three baffles in falling the air pipe of making an uproar, No. three baffles are evenly connected with a plurality of smooth No. two pipes of making an uproar that fall on the side of a smooth No. two pipes of making an uproar, No..
As preferred, air volume control mechanism comprises servo motor, threaded rod, fixed ventilating board, activity ventilating board, adjusting nut and ventilation hole, air volume control mechanism top is equipped with servo motor, servo motor's output is connected with the threaded rod, fall the fixed ventilating board of an air pipe terminal surface fixedly connected with of making an uproar, fixed ventilating board is kept away from and is equipped with movable ventilating board in the one side of falling the air pipe of making an uproar, evenly be equipped with a plurality of ventilation holes on fixed ventilating board and the activity ventilating board, one side fixedly connected with adjusting nut in fixed ventilating board is kept away from to activity ventilating board upper end, the threaded rod alternates in adjusting nut.
Preferably, the air inlet mechanism comprises a fixed frame, an impeller centrifugal fan, a supporting seat and a damping mechanism, the outer ring of the air inlet mechanism is provided with the fixed frame, the supporting seat is arranged at the bottom in the fixed frame, the impeller centrifugal fan is connected above the supporting seat, and two sides above the impeller centrifugal fan are connected with the inner wall of the fixed frame through the damping mechanism in the middle of the bottom.
As preferred, damper comprises vibration damping mount, spout, slider, connecting plate, buffer spring, No. two buffer spring and bracing piece, damper has bracing piece and vibration damping mount to constitute, the bracing piece is inserted and is established in vibration damping mount, both sides are equipped with the spout in the vibration damping mount, sliding connection has the slider on the spout, two be connected with the connecting plate between the slider, a connecting plate side is connected with the bracing piece, one side that the bracing piece was kept away from to the connecting plate is connected with the bottom in the vibration damping mount through a plurality of buffer spring No. two, a side that keeps away from No. two buffer spring and top are connected in bracing piece both sides through a buffer spring and vibration damping mount.
Preferably, the connection parts of the support rod and the support seat and the centrifugal fan of the impeller are connected with a buffer rubber layer.
Preferably, the first separator, the second separator and the third separator are all made of centrifugal glass wool materials.
Preferably, the first smooth noise reduction pipe and the second wavy noise reduction pipe are symmetrically arranged around the third partition plate and are communicated with each other.
The invention has the beneficial effects that: according to the invention, the sound-absorbing foam is filled between the outer cylinder and the inner cylinder which are arranged in the noise-reducing ventilating duct, so that the wind noise in the duct can be greatly reduced; the noise reduction ventilating duct is internally provided with a plurality of first partition plates, second partition plates and third partition plates which are made of centrifugal glass wool materials, so that airflow is dispersed and buffered to a certain extent; impeller centrifugal fan is connected with fixed frame through damper, can reduce the noise that is brought by the vibration of fan for the fan operation is quieter.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the air intake mechanism of the present invention;
FIG. 3 is a schematic view of the shock absorbing mechanism of the present invention;
FIG. 4 is a schematic structural diagram of an air volume control mechanism of the present invention;
fig. 5 is a schematic structural view of a noise reduction ventilation duct of the present invention.
In the figure: 1. a noise reduction ventilation duct; 2. an air inlet hopper; 3. fixing the bolt; 4. an air volume control mechanism; 41. a servo motor; 42. a threaded rod; 43. fixing a ventilation board; 44. a movable ventilation board; 45. adjusting the nut; 46. a vent hole; 5. an air inlet mechanism; 51. a fixing frame; 52. an impeller centrifugal fan; 53. a supporting seat; 54. a damping mechanism; 541. a damping mount; 542. a chute; 543. a slider; 544. a connecting plate; 545. a first buffer spring; 546. a second buffer spring; 547. a support bar; 6. a first ventilation pipe; 7. a noise reduction hole I; 8. a second vent pipe; 9. a second noise reduction hole; 10. a filter screen; 11. a first separator plate; 12. a third noise reduction hole; 13. a second separator plate; 14. a fourth noise reduction hole; 15. a third clapboard; 16. a first smooth noise reduction tube; 17. a second wave noise reduction pipe; 18. an outer cylinder; 19. an inner barrel; 20. an acoustic foam.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1-5, the indoor noise reduction device for the ocean passenger ship comprises a noise reduction ventilation duct 1, wherein the noise reduction ventilation duct 1 is composed of an outer cylinder 18, an inner cylinder 19 and sound absorption foam 20 filled between the outer cylinder 18 and the inner cylinder 19, one end of the noise reduction ventilation duct 1 is connected with an air inlet hopper 2, the air inlet hopper 2 is connected with the noise reduction ventilation duct 1 through a fixing bolt 3, one end of the air inlet hopper 2 close to the noise reduction ventilation duct 1 is connected with a first ventilation duct 6 in the noise reduction ventilation duct 1, a plurality of first noise reduction holes 7 are uniformly arranged on the surface of the first ventilation duct 6, one end of the first ventilation duct 6 far away from the air inlet hopper 2 is connected with a second ventilation duct 8, a plurality of second noise reduction holes 9 are uniformly arranged on the surface of the second ventilation duct 8, a filter screen 10 is connected between the first ventilation duct 6 and the second ventilation duct 8, one end of the noise reduction ventilation duct 1 far away from, and one end of the air flow control mechanism 4, which is far away from the noise reduction ventilation pipeline 1, is connected with an air inlet mechanism 5.
Wherein, No. two ventilation pipes 8 are kept away from in one side of a ventilation pipe 6 and are being equipped with baffle 11 No. one in falling air pipe 1 of making an uproar, evenly be equipped with a plurality of No. three holes 12 of making an uproar on baffle 11, No. one baffle 11 is kept away from in one side of No. two ventilation pipes 8 and is being equipped with No. two baffles 13 in falling air pipe 1 of making an uproar, evenly be equipped with a plurality of No. four holes 14 of making an uproar on No. two baffles 13, No. two baffles 13 are kept away from in one side of a baffle 11 and are being equipped with No. three baffles 15 in falling air pipe 1 of making an uproar, No. three baffles 15 are close to evenly being connected with a plurality of smooth No. 16 of falling the pipe 17 of making an uproar on the side of No. one smooth No. 16 of.
Wherein, air control mechanism 4 comprises servo motor 41, threaded rod 42, fixed ventilating board 43, activity ventilating board 44, adjusting nut 45 and ventilation hole 46, 4 tops of air control mechanism are equipped with servo motor 41, servo motor 41's output is connected with threaded rod 42, fall the fixed ventilating board 43 of 1 terminal fixedly connected with of air pipe of making an uproar, fixed ventilating board 43 is kept away from one side of falling the air pipe 1 of making an uproar and is equipped with activity ventilating board 44, evenly be equipped with a plurality of ventilation holes 46 on fixed ventilating board 43 and the activity ventilating board 44, activity ventilating board 44 upper end is kept away from in one side fixedly connected with adjusting nut 45 of fixed ventilating board 43, threaded rod 42 alternates in adjusting nut 45.
Wherein, the air inlet mechanism 5 comprises fixed frame 51, impeller centrifugal fan 52, supporting seat 53 and damper 54, the 5 outer lanes of air inlet mechanism are equipped with fixed frame 51, the bottom is equipped with supporting seat 53 in fixed frame 51, the supporting seat 53 top is connected with impeller centrifugal fan 52, impeller centrifugal fan 52 top both sides are connected with fixed frame 51 inner wall through damper 54 in the middle of with the bottom.
The damping mechanism 54 is composed of a damping base 541, a sliding groove 542, a sliding block 543, a connecting plate 544, a first buffer spring 545, a second buffer spring 546 and a supporting rod 547, the damping mechanism 54 is composed of the supporting rod 547 and the damping base 541, the supporting rod 547 is inserted into the damping base 541, the sliding grooves 542 are arranged on two sides in the damping base 541, the sliding block 543 is connected onto the sliding grooves 542 in a sliding manner, the connecting plate 544 is connected between the two sliding blocks 543, one side surface of the connecting plate 544 is connected with the supporting rod 547, one side of the connecting plate 544, which is far away from the supporting rod 547, is connected with the inner bottom portion 541 of the damping base through the two second buffer springs 546, and the connecting plate 544 is far away from one side surface of the second buffer spring 546 and is connected with the inner top portion of the damping base 541 through.
The connection between the support rod 547 and the support base 53 and the impeller centrifugal fan 52 is connected to a buffer rubber layer, so that the vibration generated by the impeller centrifugal fan 52 can be reduced.
The first partition plate 11, the second partition plate 13 and the third partition plate 15 are all made of centrifugal glass wool materials, the sound absorption effect is excellent, and the cost is low.
The first smooth noise reduction pipe 16 and the second wavy noise reduction pipe 17 are symmetrically arranged about the third partition plate 15 and are communicated with each other, so that air flow is facilitated.
Specifically, the method comprises the following steps: when the invention is used, wind flow enters the noise reduction ventilating duct 1 through the air inlet hopper 2, sound absorption foam 20 is filled between the outer cylinder 18 and the inner cylinder 19 in the noise reduction ventilating duct 1 to reduce wind noise in the duct, the air flow is dispersed to a certain degree through the first noise reduction hole 7 and the second noise reduction hole 9 on the first ventilating duct 6 and the second ventilating duct 8, the dispersed air flow passes through the third noise reduction hole 12 on the first clapboard 11, the fourth noise reduction hole 14 on the second clapboard 13, the first smooth noise reduction pipe 16 and the second wavy noise reduction pipe 17 on the third clapboard 15, the first clapboard 11, the second clapboard 13 and the third clapboard 15 are all made of centrifugal glass wool materials, the wind noise generated in the duct is greatly reduced while the air flow is further dispersed and buffered, the opening of the servo motor 41 is manually controlled to ensure that the movable ventilating plate 44 and the vent holes 46 on the fixed ventilating plate 43 are staggered, therefore, the air intake is controlled, and the vibration generated by the centrifugal impeller fan 52 during rotation can be reduced by the damping mechanism 54, so that the noise generated by the centrifugal impeller fan 52 through vibration can be reduced, the fan operates quietly, and the comfort of the guest is improved.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (8)
1. The utility model provides an indoor noise reduction device for ocean passenger ship, includes air pipe (1) of making an uproar that falls, its characterized in that, air pipe (1) of making an uproar falls by urceolus (18), inner tube (19) and pack in urceolus (18) and inner tube (19) between inhale sound foam (20) and constitute, air pipe (1) one end of making an uproar falls is connected with air inlet fill (2), air inlet fill (2) are connected through fixing bolt (3) with air pipe (1) of making an uproar falls, air inlet fill (2) are close to the one end of air pipe (1) of making an uproar and are being connected with No. one ventilation pipe (6) in air pipe (1) of making an uproar falls, No. one ventilation pipe (6) surface evenly is equipped with a plurality of No. one and falls hole (7) of making an uproar, No. two ventilation pipe (8) surface evenly is equipped with a plurality of No. two holes of making, be connected with filter screen (10) between ventilation pipe (6) and No. two ventilation pipe (8), fall the air pipe of making an uproar (1) and keep away from the one end of air inlet fill (2) and be connected with air flow control mechanism (4), air flow control mechanism (4) are kept away from the one end of falling the air pipe of making an uproar (1) and are connected with air inlet mechanism (5).
2. An indoor noise reduction device for ocean-going passenger ships according to claim 1, wherein: the second ventilating pipe (8) is far away from one side of the first ventilating pipe (6) and a first clapboard (11) is arranged in the noise reduction ventilating pipe (1), a plurality of third noise reduction holes (12) are uniformly formed in the first partition plate (11), the first partition plate (11) is far away from one side of the second ventilation pipe (8), a second partition plate (13) is arranged in the noise reduction ventilation pipe (1), a plurality of fourth noise reduction holes (14) are uniformly arranged on the second clapboard (13), the second clapboard (13) is far away from one side of the first clapboard (11) and a third clapboard (15) is arranged in the noise reduction ventilating duct (1), a plurality of first smooth noise reduction tubes (16) are uniformly connected on one side surface of the third clapboard (15) close to the second clapboard (13), a side face, far away from the first smooth noise reduction pipe (16), of the third partition plate (15) is evenly connected with a plurality of second wave noise reduction pipes (17) corresponding to the first smooth noise reduction pipe (16).
3. An indoor noise reduction device for ocean-going passenger ships according to claim 2, wherein: the air volume control mechanism (4) is composed of a servo motor (41), a threaded rod (42), a fixed ventilating plate (43), a movable ventilating plate (44), an adjusting nut (45) and a ventilating hole (46), a servo motor (41) is arranged above the air volume control mechanism (4), the output end of the servo motor (41) is connected with a threaded rod (42), one end face of the noise reduction ventilating duct (1) is fixedly connected with a fixed ventilating plate (43), a movable ventilating plate (44) is arranged on one side of the fixed ventilating plate (43) far away from the noise reduction ventilating duct (1), a plurality of vent holes (46) are uniformly arranged on the fixed ventilating plate (43) and the movable ventilating plate (44), the ventilation board is characterized in that the upper end of the movable ventilation board (44) is far away from one side of the fixed ventilation board (43) and is fixedly connected with an adjusting nut (45), and the threaded rod (42) is inserted into the adjusting nut (45).
4. An indoor noise reduction device for ocean-going passenger ships according to claim 1, wherein: the air inlet mechanism (5) comprises a fixed frame (51), an impeller centrifugal fan (52), a supporting seat (53) and a damping mechanism (54), the outer ring of the air inlet mechanism (5) is provided with the fixed frame (51), the bottom of the inner part of the fixed frame (51) is provided with the supporting seat (53), the impeller centrifugal fan (52) is connected to the upper part of the supporting seat (53), and the two sides of the upper part of the impeller centrifugal fan (52) are connected with the inner wall of the fixed frame (51) through the damping mechanism (54) in the middle of the bottom.
5. An indoor noise reduction device for ocean-going passenger ships according to claim 4, wherein: the damping mechanism (54) is composed of a damping base (541), sliding grooves (542), sliders (543), a connecting plate (544), a first buffer spring (545), a second buffer spring (546) and supporting rods (547), the damping mechanism (54) is composed of the supporting rods (547) and the damping base (541), the supporting rods (547) are inserted into the damping base (541), the sliding grooves (542) are arranged on two sides in the damping base (541), the sliders (543) are connected in a sliding mode on the sliding grooves (542), the connecting plate (544) is connected between the two sliders (543), one side face of the connecting plate (544) is connected with the supporting rods (547), one side, far away from the supporting rods (547), of the connecting plate (544) is connected with the inner bottom of the damping base (541) through the plurality of second buffer springs (546), the connecting plate (544) is far away from one side face of the second buffer spring (546) and two sides of the supporting rods (547) are connected with one buffer spring (545) through the first buffer The inner top of the damping base (541) is connected.
6. An indoor noise reduction device for ocean-going passenger ships according to claim 4, wherein: the supporting rod (547) and the supporting seat (53) are connected with a buffer rubber layer at the joint of the impeller centrifugal fan (52).
7. An indoor noise reduction device for ocean-going passenger ships according to claim 2, wherein: the first partition board (11), the second partition board (13) and the third partition board (15) are all made of centrifugal glass wool materials.
8. An indoor noise reduction device for ocean-going passenger ships according to claim 2, wherein: the first smooth noise reduction pipe (16) and the second wave noise reduction pipe (17) are symmetrically arranged around the third partition plate (15) and are communicated with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793818.9A CN112061365B (en) | 2020-08-10 | 2020-08-10 | Indoor noise reduction device for ocean passenger ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793818.9A CN112061365B (en) | 2020-08-10 | 2020-08-10 | Indoor noise reduction device for ocean passenger ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112061365A true CN112061365A (en) | 2020-12-11 |
| CN112061365B CN112061365B (en) | 2022-04-22 |
Family
ID=73660906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010793818.9A Active CN112061365B (en) | 2020-08-10 | 2020-08-10 | Indoor noise reduction device for ocean passenger ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112061365B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112572750A (en) * | 2020-12-18 | 2021-03-30 | 天津市宝洪源机械制造有限公司 | Ventilation unit for boats and ships |
| CN113309741A (en) * | 2021-07-13 | 2021-08-27 | 北京易世恒电子技术有限责任公司 | Breathing machine and fan subassembly and fan noise reduction device thereof |
| CN114852310A (en) * | 2022-07-05 | 2022-08-05 | 南通格霖海事工程有限公司 | Rotary air duct for ship |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1398575A1 (en) * | 2002-08-23 | 2004-03-17 | Kyodo-Allied Industries Ltd | Apparatus for minimising noise from a fan unit |
| WO2009130891A1 (en) * | 2008-04-22 | 2009-10-29 | 広東松下環境系統有限公司 | Centrifugal fan and method of reducing noise of centrifugal fan |
| CN207673628U (en) * | 2017-12-25 | 2018-07-31 | 广州欧丰机电有限公司 | A kind of pipeline fan denoising device |
| CN207830227U (en) * | 2018-01-17 | 2018-09-07 | 绍兴上虞专通风机厂 | A kind of centrifugal blower with decrease of noise functions |
| CN210265290U (en) * | 2019-06-18 | 2020-04-07 | 上海绿孚科技有限公司 | Silencing and noise reducing device for composite flow channel |
-
2020
- 2020-08-10 CN CN202010793818.9A patent/CN112061365B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1398575A1 (en) * | 2002-08-23 | 2004-03-17 | Kyodo-Allied Industries Ltd | Apparatus for minimising noise from a fan unit |
| WO2009130891A1 (en) * | 2008-04-22 | 2009-10-29 | 広東松下環境系統有限公司 | Centrifugal fan and method of reducing noise of centrifugal fan |
| CN207673628U (en) * | 2017-12-25 | 2018-07-31 | 广州欧丰机电有限公司 | A kind of pipeline fan denoising device |
| CN207830227U (en) * | 2018-01-17 | 2018-09-07 | 绍兴上虞专通风机厂 | A kind of centrifugal blower with decrease of noise functions |
| CN210265290U (en) * | 2019-06-18 | 2020-04-07 | 上海绿孚科技有限公司 | Silencing and noise reducing device for composite flow channel |
Non-Patent Citations (1)
| Title |
|---|
| 孔宪才等: "新型海洋科学综合考察船机舱通风系统的降噪措施", 《航海技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112572750A (en) * | 2020-12-18 | 2021-03-30 | 天津市宝洪源机械制造有限公司 | Ventilation unit for boats and ships |
| CN113309741A (en) * | 2021-07-13 | 2021-08-27 | 北京易世恒电子技术有限责任公司 | Breathing machine and fan subassembly and fan noise reduction device thereof |
| CN114852310A (en) * | 2022-07-05 | 2022-08-05 | 南通格霖海事工程有限公司 | Rotary air duct for ship |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112061365B (en) | 2022-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112061365B (en) | Indoor noise reduction device for ocean passenger ship | |
| CN113899521A (en) | Large-scale acoustic wind tunnel aperture-adjustable sound absorption collector | |
| CN206905883U (en) | It is a kind of can testing air conditioner air quantity variable end device noiseproof feature noise laboratory | |
| CN204559305U (en) | A kind of vacuum cleaner low noise motor device | |
| CN213245411U (en) | Ultra-silent fresh air system | |
| CN204025176U (en) | A kind of silencer of positive airway pressure equipment | |
| CN215765470U (en) | Outer machine of air conditioner is with shell of making an uproar that falls | |
| CN212774821U (en) | Mixed flow impeller of smoke exhaust fan | |
| CN209978279U (en) | Energy-saving noise-reducing vertical air processor | |
| CN212587212U (en) | Novel sheet type silencer | |
| CN209180132U (en) | The sound arrester of high pressure blower | |
| CN200980632Y (en) | Tubular silencer for vacuum cleaner | |
| CN204345874U (en) | Anechoic room ventilation sound-attenuating system | |
| CN208794564U (en) | A kind of used in nuclear power station antidetonation double deck type air-conditioner set | |
| CN208652880U (en) | One kind being used for the indoor air exchange system oise damping means of low noise | |
| CN206369321U (en) | A kind of dust proof workshop supply air system blimp | |
| CN206131784U (en) | Labyrinth silencer | |
| CN220286009U (en) | Noise reduction structure of ship cabin fan | |
| CN213778145U (en) | Ultra-low noise air conditioning unit | |
| CN220288287U (en) | Cooling tower | |
| CN212004738U (en) | Vehicle-mounted air conditioner vibration and noise reduction device | |
| CN211852229U (en) | Low-noise mobile cold and warm air blower | |
| CN111322715A (en) | New fan of hush air | |
| CN217979238U (en) | Tail end silencer | |
| CN211345791U (en) | New fan with actively fall and make an uproar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |