1. Contact Us

      220V Cooling Fan how to generate noise at work

      Date: 2014-12-9   Click: 1413 Times

      "220V Cooling Fan" operating noise is also widespread concern. Fan noise is noise generated when the size of the fan works, influenced by many factors, in decibels (dB). When measuring the fan noise in the noise is less than 17dB required muffling chamber conducted, one meter away from the fan, and the fan shaft is aligned along the direction of the fan air intake port, the use of A-weighted measurements manner. Spectral characteristics "220V Cooling Fan" Noise is also very important, so we must also use a spectrum analyzer records the fan noise frequency distribution, the general requirements of the fan noise to be as small as possible, but can not exist different tone. Fan noise and friction, about the air flow. Fan speed, the greater the amount of wind noise will be greater due to another fan's own shock factor can not be ignored. Of course, high-quality fans will shake itself is small, but the first two were, but it is difficult to overcome. To solve this problem, we can try to use a larger size "220V Cooling Fan". Should be in the same amount of wind, the big fan operating noise at low speed is less than the work of a small fan noise at high speed.

      Back to: Industry news

      +86-0769-83660708

      Home Product News Contact

      国产网站在线免费观看| 好爽好深胸好大好多水视频| 91国视频在线| 国产乱子伦在线观看| 国产偷窥熟女精品视频大全| 亚洲av日韩综合一区久热| 午夜视频体验区| HEYZO无码综合国产精品| 午夜私人影院在线观看| 男生女生一起差差很痛| 亚洲综合AV在线在线播放| 日韩三级中文字幕| 激情综合亚洲欧美日韩| 国产一级淫片免费播放| 欧美一级黄色片免费看| 麻豆视频免费看| 国语对白清晰好大好白| 亚洲欧美日韩高清在线电影| 久人人爽人人爽人人片AV| 一本加勒比HEZYO无码人妻| 狼友av永久网站免费观看| 国产成人女人视频在线观看| 无遮挡又黄又爽又色的动态图1000| 97久久综合精品久久久综合| 色一情一乱一伦一视频免费看| 久久狠狠躁免费观看| 欧美最猛黑人xxxx黑人猛交黄| 91亚洲国产成人精品下载| 欧美性猛交xxxx乱大交3| 邻居少妇张开腿让我爽了在线观看| 国产a级特黄的片子视频免费| 亚洲色图第四色| 欧美日韩国产码高清综合人成| 99在线精品视频| 在线观看人成视频免费| 麻豆网神马久久人鬼片| 天天躁日日躁狠狠躁日日躁| 日韩免费视频一区二区| 精品国产不卡一区二区三区| 亚洲色偷偷av男人的天堂| 很污很黄能把下面看湿的文字|