离心式抽风机特别适合于厨房、食品仓库等通风系统。封闭式的机壳能保证低噪声。叶轮采用单相或三相的标准法兰型电机驱动, 且电机安装在气流之外，也可采用调速电机.叶轮和电机都安装在检修门上, 易清洁内部的所有零件。 所有的电机都配有IEC 标准法兰型电机, 防护等级IP54, 绝缘等级B 级, 环境温度范围为-30°C-+60°C。可采用变压调速的电机最大规格为100。可按客户要求采用其它电机。离心式抽风机可配置前曲叶轮或后曲叶轮, 前曲叶轮采用镀锌钢板制造， 后曲叶轮则采用铝合金制造.两种叶轮都具有高效低噪的特点。详尽的目录和信息请发电子邮件向我们索取。WOLTER air extract box fans are used to extract stale or polluted air from professional kitchens, food halls and the alike. A well insulated housing keeps the noise level to a minimum. The impeller is driven by a standard flange type motor, single or 3-phase, mounted outside of the airstream. Motors suitable for speed control are also available. Impeller and motor are mounted on a swivel door. The impeller is easily dismounted for cleaning. The permissible temperature range of the conveyed medium is -30˚C to + 120˚C. WOLTER air extract boxes are fitted with either forward or backward curved impellers. Forward curved impellers are manufactured of galvanized sheet metal. Backward curved impellers are made of aluminium. Both impeller designs feature high efficiency and low noise characteristics. KAT - forward curved impeller with scroll. KAF - backward curved impeller without scroll. WOLTER air extract boxes have a torsion-resistant aluminium frame, joined by strong plastic corners. All side plates are made of galvanized sheet metal insulated with noise absorbing mineral wool. The aerodynamically shaped scroll (KAT) guarantees high efficiency. All models are speed controllable by frequency converter. All models marked STB are also suitable for speed control by transformer. Please refer or download our catalogue for more information.
