4-72系列离心式通风机，离心风机      一 、 4-72系列离心式通风机用途：       4-72系列离心式通风机作为一般工厂及大建筑物的室内通风换气，即可用作输入气体，也可用作输出气体。空气和其它不自燃、对人体无害的、对钢铁材料无腐蚀性的气体。气体内不许有粘性物质，所含的尘土及硬质颗粒不大于150mg/m3。气体的温度：不超过80℃。     4-72系列离心式通风机在我国是使用最早的风机，然而也是使用最普遍的风机，从高层建筑到地下铁道，从锅炉鼓风到厂房换气，4-72型风机随处可见。      二 、4-72系列离心式通风机型式：      从电机一侧正视，叶轮顺时针旋转者称右旋风机，以“右”表示；叶轮逆进针旋转者称左旋风机，以“左”表示。风机的出口位置，以机壳的出风口角度表示。4-72型风机№2.8～6出厂时均做成一种型式，使用单位根据要求再安装成所需要的位置，订货时不需注明。其中№2.8出风口位置调整范围是0°～255°，间隔是45°；№16、20出风口位置制成固定的三种0°、90°、180°，不能调整，订货时需注明。      三、4-72系列离心式通风机传动方式：     风机的传动方式有A、B、C、D四种：4-72型风机中，№2.8～6采用A式传动，№8～12采用C、D式传动，№16～20采用B式传动。    四、风机的结构      4-72型风机中№2.8～6主要由叶轮、机壳、进风口、电机等部分组成。№8～20除具有上述部分外，还有传动部分。      （1）叶轮：由10个后倾机翼型叶片、曲线型前盘和平板后盘组成，用钢板制造，并经动、静平衡校正，空气性能良好，效率高，运转平稳。      （2）机壳：做成二种不同型式。其中№2.8～12机壳作成整体，不能拆开，№16～20的机壳制成三开式，除沿中分水平面分为两半外，上半部再沿中心线垂直分为两半，用螺栓连接。      （3）进风口：制成整体，装于风机一侧，与轴向平行的截面为曲线开关作用是能使气流顺畅时入叶轮，且损失较小。      （4）传动：由主轴、轴承箱、流动轴承、皮带轮或联轴器组成。        B4-72型离心风机又称防爆离心风机。可作为易燃易挥发性气体的通风换气用。气体内不许有粘性物质，所含尘土硬质颗粒物不大于150mg／m3。气体温度不得超过80"C。 B4-72型风机的性能与选用件及地基尺寸与4-72型一致，可按其样本选择。该风机结构基本与4—72型相同，№2.8～6A采用B35型带法兰盘与底脚的电动机，№6～12C、D电动机选用该表中与Y系列对应的YB系列，安装型式为B3。     F4-72型离心风机又称防腐离心风机，可作为易腐蚀特定区域的通风换气用。产品构造，规格同上。五、4-72型离心式通风机性能参数表机号传动方式转速r/min序号流量m3/h全压Pa内效率％内功率kW所需功率kW电动机型号功率kW2.8A2900123456781131131014801659192820072177235699496693388783577070260669.373.275.576.876.975.673.269.30.450.480.510.530.550.570.580.570.670.720.710.740.770.790.810.80Y90S-2(B35)1.53.2A2900123456781688195522092476272929963250351713001263122011601091100691879269.373.275.576.876.975.673.269.30.880.930.991.031.071.101.131.111.231.311.381.341.391.431.471.45Y90L-2(B35)2.23.2A14501234567884497811041238136514981625175832431530428927225122919869.373.275.576.876.975.673.269.30.110.120.120.130.130.140.140.140.160.170.190.190.200.210.210.21Y90S-4(B35)1.13.6A29001234567826643045340537864146452748875268157815311481141913431256114498969.373.275.576.876.975.673.269.31.561.651.731.811.861.921.951.942.032.152.252.352.422.502.532.52Y100L-2(B35)33.6A1450123456781332152217031893207322632444264339338136935333531328524769.373.275.576.876.975.673.269.30.200.210.220.230.230.240.240.240.290.310.330.340.350.360.360.36Y90S-4(B35)1.14A29001234567840124506497354685962645769247419201419691915183017231606145913207780.382.584.184.683.781.477.52.893.053.183.283.353.423.433.493.473.663.823.944.024.114.114.19Y132S1-2(B35)5.54A145012345678200622532487273429813228346237095014904764554294003633297780.382.584.184.683.781.477.50.360.380.400.410.420.430.430.440.540.570.600.620.630.640.640.66Y90S-4(B35)1.14.5A290012345678571264167081778584899194985910562255424972428232021842036184916737780.382.584.184.683.781.477.55.215.495.745.926.046.176.176.306.006.326.606.816.957.097.107.24Y132S2-2(B35)7.54.5A145012345678285632083540389342454597492952816346206035775435064604167780.382.584.184.683.781.477.50.650.690.720.740.760.770.770.790.910.961.001.041.061.081.081.10Y90S-4(B35)1.15A29001234567877288855992811054121281325514328154553187314530742962279223672335201977.681.084.78686.184.682.177.68.729.359.9010.4710.8211.0711.2211.0910.0210.7611.3912.0412.4412.7212.9012.75Y160M2-2(B35)155A1450123456783864442749645527606466287164772879078076273569363758050277.681.884.78686.184.682.177.61.091.171.241.311.351.381.401.391.421.521.611.701.761.801.821.80Y100L1-4(B35)2.26A145012345678667776508578955110478114521237913353113911241099105999991983672477.681.884.78686.184.682.177.62.712.913.083.263.363.443.493.453.253.493.703.914.044.134.194.14Y112M-4(B35)46A96012345678442050655679632469387582819688414984924814634374023663174984924814634374023663170.790.840.890.940.981.001.011.001.101.181.251.321.371.401.321.30Y100L-6(B35)1.56C22401234567810314118181325114755161871769219124206282734269826372541239622022004173377.681.884.78686.184.682.177.610.0010.7311.3512.0012.4112.6912.8712.7112.1012.9813.7414.5315.0215.3615.5715.39Y160L-4156C2000123456789209105521183113174144531579617075184182176214720992022190717531595138077.681.884.78686.184.682.177.67.117.648.088.548.839.039.169.058.619.249.7810.340.6910.9311.0910.95Y160M-4116C180012345678828894971064811856130081421615367165761760173616971635154214181291111677.681.884.78686.14.682.177.65.195.575.896.26.446.586.686.606.286.747.137.547.797.98.087.98Y132M-47.56C1600123456787367844294651053911562126371366014734138913701339129112171119101988177.681.884.78686.184.682.177.63.643.914.144.374.524.624.694.634.604.95.235.535.71.845.925.85Y132S-45.56C125012345678575665957395823490339873106721151184683581678674268262153777.681.884.78686.184.682.177.61.741.861.972.092.162.202.342.212.382.552.492.632.722.792.822.79Y100L2-436C11201234567851575909662673788094884695621031467967065563159554749843177.681.884.78686.184.682.177.61.251.341.421.501.551.591.611.591.711.831.942.052.122.172.202.17Y100L1-42.26C1000123456784605527659166587722778988538920954153452250347443639734477.681.884.78686.184.682.177.60.890.951.011.071.101.13.141.131.311.311.381.461.511.541.571.55Y100L1-42.26C900123456784144474953245928650471087684828843643242240738435332227877.681.884.78686.184.682.177.60.650.700.740.780.800.820.830.820.961.031.091.151.191.211.231.22Y90L-41.56C800123456783684422147335270578163196830736734634133432230327925422077.681.884.78686.184.682.177.60.460.490.520.550.570.580.590.580.720.720.760.810.830.850.860.85Y90S-41.16D145012345678667776508578955110478114521237913353113911241099105999991983672477.681.884.78686.184.682.177.62.712.913.083.263.363.443.493.453.323.56.773.994.124.214.274.22Y112M2-446D960123456784420506556796324693875828196884149849248146343740236631777.681.84.78686.184.682.177.60.790.840.890.940.981.001.011.001.121.211.281.351.391.321.341.33Y100L-61.58C1800123456719646225112524028105308343369936427314331013032292027542531230277.681.884.78686.184.682.121.8523.4624.8326.2527.127.7428.1326.4528.3930.0531.7732.8333.5834.05Y200L1-230Y200L2-2378C1600123456717463200102243524982274082995432380247824452390230321711996181677.681.884.78686.184.682.115.3516.4717.4418.4319.0519.4919.7618.5819.9421.1022.3123.0623.5923.92Y180M-222Y200L1-230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