4-78×2E后向离心风机系列产品是中国合肥通用机械研究所、常熟神阪暖通空调设备有限公司、张家港风机厂共同研制开发的空调通风系统的专用风机,解决了长期以来一般工业通风机与空调通风系统的参数不相匹配、噪声高、当量体积大等问题。由于随着环境与工艺对空调要求越来越高,因此,功能越多,阻力越大。加上空气处理机组现状,要求风机达到体积小,风量风压大、噪 4-78 × 2E Centrifugal fan series is a special fan for air conditioning and ventilation system jointly developed by Hefei General Machinery Research Institute, Changshu Hansaka HVAC Equipment Co., Ltd. and Zhangjiagang Fan Factory to solve the problem of long-term general industrial ventilation Machine and air conditioning ventilation system parameters do not match, high noise, equivalent volume and other issues. As the environment and technology on the air conditioning requirements are getting higher and higher, therefore, the more features, the greater the resistance. Coupled with the status of air handling units, fans are required to achieve small size, wind pressure, noise