Title:
A HYDRODYNAMIC COOLING FAN FOR A COOLING TOWER WITH HIGH EFFICIENCY AND SAVING-ENERGY
Document Type and Number:
WIPO Patent Application WO/2010/009629
Kind Code:
A1
Abstract:
A hydrodynamic cooling fan for a cooling tower with high efficiency and saving-energy includes a spiral feed passage (3), a seating ring (4), a rotating wheel (2) and an input shaft (6) connected with the rotating wheel (2), a normal tangent plane of the spiral feed passage (3) has an elliptical or trapezoidal structure whose area reduces gradually, an outlet communicated with an inlet outside the seating ring (4) is positioned inside the spiral feed passage (3), outlets for tangentially striking water positioned in the seating ring (4) are distributed around the blades of the rotating wheel (2), a straight conic draft tube (1) is positioned under the rotating wheel (2) for collecting the falling water which has tangentially struck the rotating wheel (2) in order to recycle; the input shaft (6) is connected with a tachometer matching box, the fan blades are positioned on the output shaft of the tachometer matching box. The structure reduces the size of the water turbine and is convenient for making the water turbine and the tachometer matching box as integrality. The hydrodynamic cooling fan for a cooling tower may make the efficiency of the water turbine exceed 90%. The complete machine is stable to operate and no noise, and has excellent performance.
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Inventors:
GU XINGKANG (CN)
Application Number:
PCT/CN2009/071254
Publication Date:
January 28, 2010
Filing Date:
April 13, 2009
Export Citation:
Assignee:
NANJING XINGFEI COOLING EQUIPM (CN)
GU XINGKANG (CN)
GU XINGKANG (CN)
International Classes:
F04D25/04; F04D29/42; F28C1/00
Foreign References:
| CN101074677A | 2007-11-21 | |||
| CN2874079Y | 2007-02-28 | |||
| CN101328899A | 2008-12-24 | |||
| CN201228645Y | 2009-04-29 | |||
| CN1447024A | 2003-10-08 | |||
| CH571160A5 | 1975-12-31 |
Attorney, Agent or Firm:
NANJING TIANHUA PATENT AGENT CO., LTD. et al. (Block A1 World Trade Center Building,No.67 Shanxi Roa, Nanjing Jiangsu 9, CN)
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