国产极品美女到高潮,久久综合av免费观看,亚洲va中文慕无码久久av,国产av熟女一区二区三区,午夜亚洲国产理论片_日本,国产偷录视频叫床高潮,一道本在线伊人蕉无码,国产作爱视频免费播放

系統(tǒng)與產品

高效節(jié)能、安全可靠、智能控制、綠色低碳

首頁 > 系統(tǒng)與產品 > Ventilation > 產品定制 > Marine accessories
業(yè)務咨詢
  • DN series efficient silencer

    At present, ship air conditioning and ventilation systems mostly use centralized air supply all air systems to achieve cabin air environment control. There are two main sources of noise: one is the noise generated by the operation of (combination) air conditioners, ventilators, and other equipment; The second is the regenerative noise generated by the airflow in the air ducts and equipment, including the noise generated by the air ducts and air vents. Therefore, noise control needs to be approached from two aspects: on the one hand, optimizing system design to reduce noise from the sound source; On the other hand, measures such as sound absorption and noise reduction are taken to control the propagation of noise, which to some extent attenuates the noise to a lower value. In the air conditioning and ventilation system, the air vents require airflow to pass through. In this case, vibration isolation and noise reduction schemes are no longer sufficient at certain locations. In this case, we usually install silencers on the ventilation ducts to reduce noise. Josun air conditioner is a specialized high-efficiency muffler developed according to the GB/T 25516-2010 standard for various ventilation systems. It has the characteristics of good noise reduction effect, low air resistance loss, and easy installation. Widely used in various equipment rooms, garages, ships, and offshore platforms.


產品特征

Product features:

Model Description:

“DN”:  muffler

1600 "inner diameter size

Composition: The muffler consists of a muffler shell and a muffler unit, with a muffler unit channel in the middle. The muffler unit channel is made of muffler orifice plate, ultra-fine fiberglass cotton, and fiberglass hole cloth.

Product Features:

The DN series efficient silencer is a silencing device that attenuates or prevents sound propagation while allowing airflow to pass through. With the sound absorption effect of sound-absorbing materials or structures, the noise propagating along the pipeline is attenuated with increasing distance, and the sound energy is absorbed and converted into heat energy, achieving the purpose of silencing and reducing airflow noise in machinery.

The DN series muffler is a ventilation duct muffler, which is of the acoustic resistant flow type; It has a sound-absorbing and noise reducing effect on high and medium frequency noise, suitable for various cabins.

Product advantages:

Our company's efficient silencer can be made into circular or square shapes, which can be used in conjunction with fans. It has good ventilation flow, low resistance, and good noise reduction effect. It can be installed vertically or horizontally. The silencing unit has ideal silencing effect over a wide frequency range, good aerodynamic characteristics, and special design for the flow guide and orifice plate, resulting in minimal resistance loss.


Basic parameters:

  • DN300-600 noise reduction volume: 4-6 dB (A)

  • DN700-1000 noise reduction volume: 6-8 dB (A)

  • DN1200-1600 noise reduction volume: 8-10 dB (A)

  • The shell is made of ordinary steel plate rolled, or stainless steel or other materials can be used according to user requirements;

  • The sound-absorbing board is made by stamping and rolling ordinary steel plates, and can also be made of materials such as stainless steel according to user requirements;

  • The sound-absorbing cotton is made of ultra-fine fiberglass cotton

  • Fiberglass cloth is wrapped around the sound-absorbing cotton, which is conducive to fixing the sound-absorbing cotton and preventing it from scattering.


Application scenarios:

Widely used in various types of passenger ships, cargo ships, warships, and offshore oil platforms.


關聯產品
系統(tǒng)應用
在線詢價
  • *

    姓名:

  • *

    電話:

  • *

    郵箱:

  • *

    您的所在地:

  • 您的公司名稱:

  • *

    留言:

  • *

    驗證碼:

    換一張
提 交

華東

  • 浙江辦事處
  • 上海辦事處
  • 地址:浙江省舟山市人民北路書院弄一單元六幢402室
  • 傳真:+86-135 6777 1890
  • 電話:+86-135 6777 1890
  • 郵箱:xu_haijian@josun.cn
  • 地址:上海市浦東新區(qū)金豫路100號1幢1021-1022室 (禹州金橋國際Ⅱ期)
  • 傳真:+86-21-5890 6852
  • 電話:+86-137 0165 2277/+86-21-5890 6856
  • 郵箱:wang_wei@josun.cn

華北

  • 天津辦事處
  • 地址:天津市塘沽區(qū)新港三號路紫云園10棟2門601室
  • 傳真:+86-22-2530 0727
  • 電話:+86-138 2027 5388/+86-22-2530 0727
  • 郵箱:yuan_jianxin@josun.cn

華南

  • 廣州辦事處
  • 地址:廣州市海珠區(qū)昌崗中路185號A座1902室
  • 傳真:+86-20-3433 3496
  • 電話:+86-139 0240 2804/+86-20-3433 3496
  • 郵箱:wang_aibing@josun.cn

國外

  • National Service Phone
  • Tel:86-523-87598356
  • Email: commerce@josun.cn

Copyright 2017 江蘇兆勝空調有限公司版權所有蘇ICP備15011978號-1百度統(tǒng)計

走進兆勝 聯系我們

主站蜘蛛池模板: 久久中文字幕av不卡一区二区 | 米奇欧美777四色影视在线| 伊人久久大香线焦av综合影院| 97se亚洲国产综合自在线| 日韩少妇白浆无码系列| 国产仑乱无码内谢| 欧美乱妇高清免费96欧美乱妇高清| 人人爽天天碰狠狠添| 亚洲精品理论电影在线观看| 欧美日韩在线第一页免费观看| 免费无码又爽又刺激激情视频| 亚洲综合久久成人av| 国产av一区二区精品久久凹凸| 亚洲精品一卡2卡3卡4卡乱码| 国产精品aⅴ视频在线播放 | 99精品国产在热久久无毒不卡| 色八戒一区二区三区四区| 亚洲国产成人久久综合人| 久久婷婷五月综合中文字幕| 亚洲欧洲综合有码无码| 久久久久久中文字幕有精品| 国产精品人妻99一区二区| 三上悠亚网站在线观看一区二区 | 免费午夜无码片在线观看影院| 国产熟女精品视频大全| 国产精品亚洲专区无码唯爱网| 日本中文字幕乱码免费| 狠狠做深爱婷婷丁香综合| 亚洲精品动漫免费二区| 亚洲综合另类小说色区大陆| 国产成人av一区二区在线观看| 99视频在线精品免费观看6| 亚洲大尺度专区无码浪潮av| 国产八十老太另类| 亚洲中文字幕乱码电影| 日韩精品 中文字幕 视频在线| 丰满人妻无奈张开双腿av| 国产亚洲精品第一综合另类| 天天摸夜夜添久久精品| 熟妇无码熟妇毛片| 久久精品国产99精品最新|