空气源热泵机组的噪声源分析
发布时间：2018.06.13
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="font-size:16px;"><span style="font-family:宋体;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"> 热泵机组噪声又称热泵振动噪音、热泵声振动、热泵机组噪声、热泵机组结构噪声，属于物理性质上的噪音。综合来讲，热泵机组噪声就是热泵机组在工作运行时产生的不规则的、间歇的、连续的随机的噪声。其噪声级在70至90db（A）左右。热泵机组的噪声源主要包括：热泵上部的轴流风机；热泵下部的压缩机；还有其 配套的送水泵。</span></span></span></p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"> </p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="font-size:16px;"><span style="font-family:宋体;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"> 根据噪声传播方式的不同，我们一般会采取隔振、消声器、隔声等方式处理热泵机组的噪声。热泵机组属于低频噪声，低频噪声的特点就是衰减缓慢、声波较长、穿透能力强（其衍射波能轻易绕过障碍物），所以低频噪声不易处理。</span></span></span></p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="font-size:16px;"><span style="font-family:宋体;"> </span></span></p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="font-size:16px;"><span style="font-family:宋体;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"> 从热泵的结构分析，噪声源是压缩机和排风扇。压缩机和排风扇运行产生噪声，而且由于设备运转导致热泵的钢结构产生微振动和结构振动噪声，但前者是主要噪声。</span></span></span></p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"> </p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="font-size:16px;"><span style="font-family:宋体;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"> （1）大型热泵的实测噪声级与销售商提供的噪声指标或样本上标明的噪声级有一定的差别，实测的噪声都要超出3~10dB。一般的热泵A声级噪声为79~82dB，有的热泵超过90dB。如果在居民楼附近或办公楼顶上安装数台热泵，热泵的噪声必然要对周围环境造成较大的影响。</span></span></span></p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"> </p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="font-size:16px;"><span style="font-family:宋体;"><span style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"> （2）大型热泵的噪声是开放性的，噪声主要从热泵的两侧和顶部向外辐射，辐射噪声的面积较大。如顶部的排风扇台数较多，多的有近百台，总面积可达12㎡以上，两侧的面积也有十几平方米，噪声从如此大的面积传播出去（回声源传播），影响范围大，衰减慢，在热泵两侧3m范围内噪声基本上无衰减，在热泵长度以内距离衰减率为3dB。</span></span></span></p>
<p style="margin: 0px; padding: 0px; max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; box-sizing: border-box !important; word-wrap: break-word !important;"> </p>
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