CN205299884U - Low noise air supply system of marine air conditioner - Google Patents
Low noise air supply system of marine air conditioner Download PDFInfo
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- CN205299884U CN205299884U CN201620045712.XU CN201620045712U CN205299884U CN 205299884 U CN205299884 U CN 205299884U CN 201620045712 U CN201620045712 U CN 201620045712U CN 205299884 U CN205299884 U CN 205299884U
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Abstract
The utility model provides a low noise air supply system of marine air conditioner, marine air conditioner disposes the air supply fan including the AHU air -conditioning box that is rectangular shape in the air supply section of AHU air -conditioning box, low noise air supply system's constitution part includes air -conditioning box damping air -out section, in hush pipe and the whistle box at least one to and damping cloth wind ware, apolegamic subassembly part and damping cloth wind ware series connection are in the air supply section of AHU air -conditioning box. This system utilizes the intrinsic structure of AHU air -conditioning box, according to falling the different requirements of making an uproar, can with clearly defined objective flexibility match in limited several kinds are fallen the part of making an uproar, provides the lectotype method of system for satisfying international low noise standard, whole low noise air supply system's the part of respectively constituteing falls that to make an uproar the limit value clear and definite, can not only optimize the design of ship air conditioning system, satisfies ship noise grade rule harsh day by day simultaneously, integrates with with the international norm.
Description
Technical field
This utility model relates to field of air conditioning, particularly relates to the supply air system of marine air conditioner.
Background technology
In recent years, along with the enhancing to crewman's health protective awareness, International Maritime Organization (IMO) proposes to avoid the navigation safety of the health problem impacts such as the crew fatigue that causes because of noise on ship. Along with International Maritime Organization improves constantly environmental protection standard, on ship, criterion for noise control also improves day by day, Maritime Safety Committee formally enforced " on ship noise grade rule " amendment in 1 day July in 2014, the to the effect that mandatory provision residential area of its revision noise control below 55 decibels, and the requirement such as the pressure proposing air sound insulation.
DNV comfortableness ship class symobl notation COMF-V (crn) C (crn), wherein V represents vibration noise, and C represents cabin indoor climate, and crn represents comfortableness grade (can value 1,2,3). Ship Vibration noise comfort level is set classification requirement by DNV specification, altogether Three Estate, and wherein 1 grade be most high degree of comfort grade, and 2 grades is routine comfort level, and 3 grades is acceptable comfort level.
In the world, cabin Noise and Vibration Control is required comparatively strict by major part developed country, such as the PCAC etc. of HAB, the LR specification of ABS specification; Common large-scale merchant ship is lived and working area vibration noise standard has IMORes.A.468 and ISO6954-2000. Domestic boats and ships noise objective far lags behind external advanced index, and 3 grades of requirements of the index DNV of major part target area all do not reach.
Marine air-conditioning system is the key link affecting boats and ships residential area comfort level. The design of existing domestic and international marine air conditioner and equipment manufacturer lack the system approach meeting international low noise specification, and some silencing apparatus noise reductions are not enough, finally cannot meet code requirement; Some silencing apparatus select too much, to cause that system bulk is excessively huge, affect the structure in cabin and arrange, cause the waste of material simultaneously.
Utility model content
Technical problem to be solved in the utility model is in that to provide the low noise supply air system of a kind of marine air conditioner.This system can not only reach the comfort level effect of DNVCOMF2 level, realize the noise control in air-conditioning cabin within 55 decibels, and simple in construction, it is possible to match flexibly according to different hull air conditioning systems, while meeting low noise, control noise reduction cost.
This utility model is achieved through the following technical solutions:
A kind of low noise supply air system of marine air conditioner, described marine air conditioner includes elongated AHU air-conditioning box, configuration breeze fan in the air supply section of AHU air-conditioning box, it is characterised in that:
The building block of described low noise supply air system includes air-conditioning box damping wind outlet section, hush pipe and at least one in Sound Attenuator, and damping ventilation terminal, the component parts of apolegamy and damping ventilation terminal are connected in series on the air supply section of AHU air-conditioning box, wherein:
Air-conditioning box damping wind outlet section be box-shaped, its inlet side is offered air inlet, air side is offered air outlet, and, air intake direction relative to air-out direction bending,
Air-conditioning box is damped the case inner region of wind outlet section and is divided into two area segments mutually not separated along air intake direction, be respectively positioned at the first noise reduction district of inlet side and be positioned at the second noise reduction district of air side, the width of the second noise reduction district wind outlet more than air outlet bore,
In the first noise reduction district, the air intake direction of wind outlet section is damped along air-conditioning box, the evenly spaced some anechoic sheets that are arranged in parallel, the first noise reduction is distinguished and is divided into the long and narrow flat parallel air paths of some layers by anechoic sheet, and space is left in the inlet side that the air intake of anechoic sheet damps wind outlet section with air-conditioning box;
Described hush pipe is double layer hollow tube wall, and inner layer tube wall is porous plate, filling porous acoustic absorbing medium layer between inside and outside tube wall;
The casing of described air-conditioning box damping wind outlet section and Sound Attenuator is double layer hollow housing, and its inner shell is porous plate, filling porous acoustic absorbing medium layer between inside and outside two-layer housing;
Described anechoic sheet shell is porous plate, internal filling porous acoustic absorbing medium layer;
Liner hard acoustic absorbing medium layer on the ventilation terminal outer casing inner wall of described damping ventilation terminal.
Air-conditioning box damping wind outlet section utilizes the extensibility of structure of AHU air-conditioning box own, can match on the air supply section being connected to AHU air-conditioning box casing, after air-flow enters air-conditioning box damping wind outlet section, first pass through the long and narrow air channel in the first noise reduction district, anechoic sheet reduces the partial noise of air-flow, then, air-flow enters the second relatively spacious noise reduction district, utilize small pipeline (the long and narrow air channel in the first noise reduction district) and the cross section expansion ratio of big casing (the second noise reduction district), pneumatic noise decays further, then, air-flow bending is sent from air outlet, utilize big casing (the second noise reduction district) and the cross section shrinkage ratio of small pipeline (air outlet and connected ajutage/hush pipe), pneumatic noise decays further, simultaneously, the bending air channel that air-out direction is formed relative to the bending of air intake direction, especially 90 degree of right-angle bending air channels can also form a bend muffler structure, promote the decay of pneumatic noise further. additionally, air-conditioning box damping wind outlet section casing itself also has certain effect absorbing noise. damp in wind outlet section at a little box-type, the compound coordination combined effect of the multiple noise elimination means such as air-flow is eliminated the noise through anechoic sheet, multi-stage reducing ratio noise elimination, elbow noise elimination, sound-absorbing material noise elimination, pneumatic noise is absorbed repeatedly, sound wave multiple reflections is cancelled out each other, the effect of sound attenuation to be significantly larger than multiple single silencing apparatus simply connect use effect, and noise elimination structure is compacter, the use of deadener is also saved more.
Hush pipe, damping ventilation terminal is different mainly by each self-structure, act on identical acoustic absorbing medium layer absorption of noise, Sound Attenuator other than with the porous sound absorption dielectric layer absorption of noise on cabinet wall outside, in its relatively spacious case, space also can be played steady air flow, be reduced the effect of noise, in addition, Sound Attenuator can also be also designed to be similar to 90 degree of bending air-supply structures of air-conditioning box damping wind outlet section: the air intake direction of Sound Attenuator and air-out direction are mutually perpendicular to, the air inlet of Sound Attenuator is away from the air outlet of Sound Attenuator, it is possible to further reduce noise.
Further, if this low noise supply air system adopts air-conditioning box damping wind outlet section, the type of attachment that hush pipe and Sound Attenuator and damping ventilation terminal are all matched, space structure according to cabin, air-conditioning box damping wind outlet section and Sound Attenuator can be arranged nearby, connect either directly through hush pipe between the two, or, due to space restriction or other reason, when both cannot arrange nearby, common ajutage can also be passed through and connect two sections of hush pipes, its concrete arrangement form is as follows: described low noise supply air system includes air-conditioning box damping wind outlet section, hush pipe and Sound Attenuator and damping ventilation terminal, wherein: air-conditioning box damping wind outlet section is close to the configuration of AHU air-conditioning box air supply section, its air inlet connects with breeze fan, the air outlet of air-conditioning box damping wind outlet section and the air inlet of Sound Attenuator are respectively configured one section of hush pipe, are connected by ajutage between two sections of hush pipes, or, two sections of hush pipes are the two ends of same hush pipe, the air outlet of Sound Attenuator connects damping ventilation terminal by ajutage.
Sound Attenuator can be arranged in AHU air-conditioning box side, or, if the cabin limited space at AHU air-conditioning box place, Sound Attenuator can also utilize pipeline enclose the concrete structure of well, being arranged in pipeline and enclose in well, the shape of Sound Attenuator need not be very regular, as long as size meets noise reduction requirement. Its dimensional requirement is: Sound Attenuator height, at about 1m, is generally 0.9��1.6m, and volume is being generally 0.9��10m3��
Further, described porous plate is aluminum-zinc alloy orifice plate or zinc-plated orifice plate, and described acoustic absorbing medium layer is the sound-absorbing material that rock wool layer, glass layer or layer of mineral wool etc. have similar functions and character.
Further, the layout of anechoic sheet can adopt following form: ratio value s:d=1/2��1 of the thickness d of the distance s between described adjacent anechoic sheet and anechoic sheet; Ratio value s':s=1/2��1 of the distance s between distance s' and adjacent anechoic sheet between the anechoic sheet that air-conditioning box damping wind outlet section inner shell of a box body is adjacent. Ensure that good soundproof effect, avoid the too high air draught pressure loss simultaneously.
Further, ratio value L':L=0.5��0.8 of the case internal cavity length L of the length in described first noise reduction district and air-conditioning box damping wind outlet section, to ensure the pneumatic noise fully release in this region and decay.
The beneficial effects of the utility model are in that:
1, the inherent structure of AHU air-conditioning box is utilized, the different requirements according to noise reduction, it is possible to flexible apolegamy with clearly defined objective in limited several noise-reducing components, for the method that satisfied international low noise specification provides system;
2, not only affect structure in cabin to arrange, and can the flexible arrangement air-conditioning box damping wind outlet section of cabin space structure treatment in accordance with local conditions and Sound Attenuator, the volume of whole low noise supply air system will not be excessively huge, does not result in the waste of material;
3, apparatus structure is compact, especially air-conditioning box damping wind outlet section, in a little casing, air-flow is through the compound coordination combined effect of multiple noise elimination means, pneumatic noise is absorbed repeatedly, and sound wave multiple reflections is cancelled out each other, the effect of sound attenuation to be significantly larger than multiple single silencing apparatus simply connect use effect, and noise elimination structure is compacter, the use of deadener is also saved more;
4, each building block noise reduction limit value of whole low noise supply air system is clear and definite, can not only optimize the design of marine air-conditioning system, meets day by day harsh ship noise hierarchy rules simultaneously, integrates with international norm.
Accompanying drawing explanation
Fig. 1 is a kind of preferred version of native system configuration schematic diagram in whole AHU air conditioning system peculiar to vessel
Fig. 2 is air-conditioning box damping wind outlet section structural representation
Fig. 3 is the schematic diagram of a kind of whistle box structure
Fig. 1��3:1 is AHU air-conditioning box, and 2 is breeze fan, and 3 damp wind outlet section for air-conditioning box, and 301 is the first noise reduction district, and 302 is the second noise reduction district, and 5 is anechoic sheet, and 6 is hush pipe, and 7 is Sound Attenuator, and 8 is ajutage, and 9 is damping ventilation terminal.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As it is shown in figure 1, configure breeze fan 2 in the air supply section of elongated AHU air-conditioning box 1 right-hand member; Utilize the structure of AHU air-conditioning box 1 itself, it is close to air supply section and extends to the right the air-conditioning box damping wind outlet section 3 of one section of box-shaped, on the left of it, namely the air inlet on inlet side connect with breeze fan 2, rear side, i.e. air side offer air outlet near right side place, configuring hush pipe 6 on air outlet, air-conditioning box damping wind outlet section 3 air intake direction is relative to 90 degree of bendings of air-out direction. Connected by hush pipe 6 between air outlet and the air inlet of Sound Attenuator 7 of air-conditioning box damping wind outlet section 3; The air outlet of Sound Attenuator 7 connects damping ventilation terminal 9 by ajutage 8. Air in accommodation by the return air duct return air with anechoic sheet 5 to AHU air-conditioning box 1.
As shown in Figure 2, the case inner region that air-conditioning box damps wind outlet section 3 is divided into two area segments mutually not separated along air intake direction, respectively being positioned at the first noise reduction district 301 of inlet side and be positioned at the second noise reduction district 302 of air side, the width of the second noise reduction district 302 wind outlet is more than air outlet bore.
In the first noise reduction district 301, the air intake direction of wind outlet section 3 is damped along air-conditioning box, the evenly spaced some anechoic sheets 5 that are arranged in parallel, first noise reduction district 301 is separated into the long and narrow flat parallel air paths of some floor by anechoic sheet 5, space is left in the inlet side that the air intake of anechoic sheet 5 damps wind outlet section 3 with air-conditioning box, it is simple to air-flow is dispersed into each air channel; The ratio value s:d=1 of the thickness d of the distance s between adjacent anechoic sheet 5 and anechoic sheet 5; The ratio value s':s=1/2, the length L' in the first noise reduction district 301 of the distance s between distance s' and adjacent anechoic sheet 5 between the anechoic sheet 5 that air-conditioning box damping wind outlet section 3 inner shell of a box body is adjacent accounts for about the 1/2 of the case internal cavity length L of air-conditioning box damping wind outlet section 3.
Hush pipe 6 is double layer hollow tube wall, and inner layer tube wall is porous plate, filling porous acoustic absorbing medium layer between inside and outside tube wall; The casing of air-conditioning box damping wind outlet section 3 and Sound Attenuator 7 is double layer hollow housing, and its inner shell is porous plate, filling porous acoustic absorbing medium layer between inside and outside two-layer housing; Anechoic sheet 5 shell is porous plate, internal filling porous acoustic absorbing medium layer; Liner hard acoustic absorbing medium layer on the ventilation terminal outer casing inner wall of damping ventilation terminal 9. Porous plate is aluminum-zinc alloy orifice plate or zinc-plated orifice plate, and described acoustic absorbing medium layer is rock wool layer, glass layer or layer of mineral wool.
As shown in Figure 3, Sound Attenuator 7 is arranged at the pipeline of boats and ships and encloses in well, in order to not affect the layout of existing pipeline, and make full use of the space that pipeline encloses in well, the Sound Attenuator 7 pipeline of being close in Semi surrounding type encloses the pipeline of configuration in well, L-shaped bending, not straight divider is whole, bending section defines the 90 degree of bending air-supply structures being similar to air-conditioning box damping wind outlet section 3: the air intake direction of Sound Attenuator and air-out direction are mutually perpendicular to, the air inlet of Sound Attenuator 7 is away from the air outlet of Sound Attenuator, it is possible to further reduce noise.Sound Attenuator 7 is highly about 1m, and volume is about 0.9��10m3, acoustic absorbing medium layer thickness is 50cm.
Damp in wind outlet section 3 at a little box-type air-conditioning box, the compound coordination combined effect of the multiple noise elimination means such as air-flow is eliminated the noise through anechoic sheet, multi-stage reducing ratio noise elimination, elbow noise elimination, sound-absorbing material noise elimination, pneumatic noise decay effect to be significantly larger than multiple single silencing apparatus simply connect use effect, and noise elimination structure is compacter, the use of deadener is also saved more.
Test result shows, air-flow is by after air-conditioning box damping wind outlet section 3, and its noise can reduce about 5��10 decibels; Then, air-flow passes through hush pipe 6, noise reduction about 10��20 decibels; By Sound Attenuator 7, noise reduction about 20��30 decibels, the damping ventilation terminal 9 finally by air-supply end exports. Its final testing result has reached DNVCOMF2 level, it is equal to and reaches CCS CCSCOMF2 level requirement, realize the noise control in air-conditioning cabin within 55 decibels (according to GB/T14294 standard, the noise of AHU air-conditioning box 1 own is typically in 72��90 decibels), the final accommodation noise figure realizing meeting code requirement.
Claims (9)
1. a low noise supply air system for marine air conditioner, described marine air conditioner includes elongated AHU air-conditioning box (1), configuration breeze fan (2) in the air supply section of AHU air-conditioning box (1), it is characterised in that:
The building block of described low noise supply air system includes air-conditioning box damping wind outlet section (3), at least one in hush pipe (6) and Sound Attenuator (7), and damping ventilation terminal (9), component parts and damping ventilation terminal (9) of apolegamy are connected in series on the air supply section of AHU air-conditioning box (1), wherein:
Air-conditioning box damping wind outlet section (3), in box-shaped, its inlet side is offered air inlet, air side is offered air outlet, and, air-conditioning box damps the air intake direction of wind outlet section (3) relative to air-out direction bending,
The case inner region that air-conditioning box damps wind outlet section (3) is divided into two area segments mutually not separated along air intake direction, respectively it is positioned at the first noise reduction district (301) of inlet side and is positioned at the second noise reduction district (302) of air side, the width of the second noise reduction district (302) wind outlet is more than air outlet bore
In the first noise reduction district (301), the air intake direction of wind outlet section (3) is damped along air-conditioning box, the evenly spaced some anechoic sheets (5) that are arranged in parallel, first noise reduction district (301) is separated into the long and narrow flat parallel air paths of some floor by anechoic sheet (5), and space is left in the inlet side that the air intake of anechoic sheet (5) damps wind outlet section (3) with air-conditioning box;
Described hush pipe (6) is double layer hollow tube wall, and inner layer tube wall is porous plate, filling porous acoustic absorbing medium layer between inside and outside tube wall;
The casing of described air-conditioning box damping wind outlet section (3) and Sound Attenuator (7) is double layer hollow housing, and its inner shell is porous plate, filling porous acoustic absorbing medium layer between inside and outside two-layer housing;
Described anechoic sheet (5) shell is porous plate, internal filling porous acoustic absorbing medium layer;
Liner hard acoustic absorbing medium layer on the ventilation terminal outer casing inner wall of described damping ventilation terminal (9).
2. the low noise supply air system of marine air conditioner according to claim 1, it is characterised in that:
Described low noise supply air system includes air-conditioning box damping wind outlet section (3), hush pipe (6) and Sound Attenuator (7) and damping ventilation terminal (9), wherein:
Air-conditioning box damping wind outlet section (3) is close to the configuration of AHU air-conditioning box (1) air supply section, and its air inlet connects with breeze fan (2);
The air outlet of air-conditioning box damping wind outlet section (3) and the air inlet of Sound Attenuator (7) are respectively configured one section of hush pipe (6), by ajutage (8) series connection between two sections of hush pipes, or, the two ends that two sections of hush pipes (6) are same hush pipe (6);
The air outlet of Sound Attenuator (7) connects damping ventilation terminal (9) by ajutage (8).
3. the low noise supply air system of marine air conditioner according to claim 1, it is characterized in that: described Sound Attenuator (7) is arranged in AHU air-conditioning box (1) side, or, described Sound Attenuator (7) is positioned at the pipeline of boats and ships and encloses well.
4. the low noise supply air system of marine air conditioner according to claim 3, it is characterised in that: described Sound Attenuator (7) is highly 0.9��1.6m, volume 0.9��10.0m3��
5. the low noise supply air system of marine air conditioner according to claim 1, it is characterised in that: described porous plate is aluminum-zinc alloy orifice plate or zinc-plated orifice plate, and described acoustic absorbing medium layer is rock wool layer, glass layer or layer of mineral wool.
6. the low noise supply air system of marine air conditioner according to claim 1, it is characterised in that:
Ratio value s:d=1/2��1 of the thickness d of the distance s between described adjacent anechoic sheet (5) and anechoic sheet (5);
Ratio value s':s=1/2��1 of the distance s between distance s' and adjacent anechoic sheet (5) between the anechoic sheet (5) that air-conditioning box damping wind outlet section (3) inner shell of a box body is adjacent.
7. the low noise supply air system of marine air conditioner according to claim 1, it is characterised in that: ratio value L':L=0.5��0.8 of the length L' in described first noise reduction district (301) and the case internal cavity length L of air-conditioning box damping wind outlet section (3).
8. the low noise supply air system of marine air conditioner according to claim 1, it is characterized in that: the air intake direction of described Sound Attenuator (7) and air-out direction are mutually perpendicular to, and the air inlet of Sound Attenuator (7) is away from the air outlet of Sound Attenuator (7).
9. the low noise supply air system of marine air conditioner according to claim 1, it is characterised in that: the air intake direction of described air-conditioning box damping wind outlet section (3) is relative to air-out direction bending 90 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620045712.XU CN205299884U (en) | 2016-01-18 | 2016-01-18 | Low noise air supply system of marine air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045712.XU CN205299884U (en) | 2016-01-18 | 2016-01-18 | Low noise air supply system of marine air conditioner |
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| CN205299884U true CN205299884U (en) | 2016-06-08 |
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| CN201620045712.XU Expired - Fee Related CN205299884U (en) | 2016-01-18 | 2016-01-18 | Low noise air supply system of marine air conditioner |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167083A (en) * | 2016-08-17 | 2016-11-30 | 江苏兆胜空调有限公司 | A kind of tail-end variable wind amount electrical heating ventilation terminal |
| CN107514790A (en) * | 2017-09-30 | 2017-12-26 | 柳州联海科技有限公司 | A kind of packaged type ventilation terminal peculiar to vessel |
| CN109441827A (en) * | 2018-12-18 | 2019-03-08 | 安徽海螺集团有限责任公司 | Cement kiln flue gas collecting carbonic anhydride purification system noise controller |
| CN109681995A (en) * | 2019-01-24 | 2019-04-26 | 南方风机股份有限公司 | A kind of nuclear power station unitary air handling unit |
| CN111846187A (en) * | 2020-07-24 | 2020-10-30 | 中国舰船研究设计中心 | Centralized air intake and exhaust system of offshore nuclear power platform |
| CN113501124A (en) * | 2021-07-21 | 2021-10-15 | 上海外高桥造船有限公司 | Ship structural air pipe with silencer and installation method thereof, and ship |
| CN113970181A (en) * | 2020-07-24 | 2022-01-25 | 飒爽智能技术（上海）有限公司 | Water collecting tray and dehumidifier |
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2016
- 2016-01-18 CN CN201620045712.XU patent/CN205299884U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167083A (en) * | 2016-08-17 | 2016-11-30 | 江苏兆胜空调有限公司 | A kind of tail-end variable wind amount electrical heating ventilation terminal |
| CN107514790A (en) * | 2017-09-30 | 2017-12-26 | 柳州联海科技有限公司 | A kind of packaged type ventilation terminal peculiar to vessel |
| CN109441827A (en) * | 2018-12-18 | 2019-03-08 | 安徽海螺集团有限责任公司 | Cement kiln flue gas collecting carbonic anhydride purification system noise controller |
| CN109441827B (en) * | 2018-12-18 | 2024-04-12 | 安徽海螺集团有限责任公司 | Noise control device of cement kiln flue gas carbon dioxide trapping and purifying system |
| CN109681995A (en) * | 2019-01-24 | 2019-04-26 | 南方风机股份有限公司 | A kind of nuclear power station unitary air handling unit |
| CN109681995B (en) * | 2019-01-24 | 2024-05-14 | 南方风机股份有限公司 | Combined air conditioning unit of nuclear power station |
| CN111846187A (en) * | 2020-07-24 | 2020-10-30 | 中国舰船研究设计中心 | Centralized air intake and exhaust system of offshore nuclear power platform |
| CN113970181A (en) * | 2020-07-24 | 2022-01-25 | 飒爽智能技术（上海）有限公司 | Water collecting tray and dehumidifier |
| CN111846187B (en) * | 2020-07-24 | 2022-05-20 | 中国舰船研究设计中心 | Centralized air intake and exhaust system of offshore nuclear power platform |
| CN113501124A (en) * | 2021-07-21 | 2021-10-15 | 上海外高桥造船有限公司 | Ship structural air pipe with silencer and installation method thereof, and ship |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20210118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |