Saving low noise Francis fan [SWF (B)] Series Low Noise Francis fan is between saving a new fan axial and centrifugal fans between its high pressure centrifugal fans, axial fans high flow, high efficiency, good energy saving, low noise Francis fan manufacturers, convenient installation. This series of fan design Ying, compact structure, small size, light weight, easy to install, compared with the old-fashioned centrifugal fans can save 20%, speed is less than 2000r / min, the noise is less than 75dB (A) Francis fan, coupling pipes and fan mounted inside the air conditioner, noise is less than 70dB (A). Can replace 2000pa below, the low-pressure centrifugal fan, Francis fan Hebei widely used in industrial, civil and other ventilation and dust. Francis fan SWF Francis fan application meridional acceleration method and the "quasi-ternary" flow theory design, with straight outer cylinder, cone wheel, twisted wing blade structural forms. Pressure compared with the same machine number of high axial fans, air volume compared with the same machine number large centrifugal fan. With high efficiency, compact structure, low noise, small size, easy installation, etc., widely used in hotels, restaurants, shopping malls, office buildings, stadiums and other senior civil pass exhaust pipe pressurized air supply and ventilation change mining industry gas sites. Two-speed fan which can be adjusted required amount of wind, air pressure according to the conditions required by the use of variable speed. Note: SWF (A) can be made based Francis fan roof structure; representation: the letters behind the machine number "W". SWF (B) type Francis fan in additional muffler inlet collector to reduce fan noise operation, representation for SWF (B) -X. Francis fan models, Francis fan, air conditioning provided by Wu Rui Ding Ding Rui City Air Conditioning Equipment Co., Ltd. Wu Cheng Ding Rui Air Conditioning Equipment Co., Ltd. (www.wcdrkt.com) (www.wcdrkt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Dingrui air conditioning and you hand into the brilliant, for a better future!