| 摘要 |
INVENTOR: MAYER, ROBERT 52 Whitemarsh Road Ardmore, County of Delaware Commonwealth of Pennsylvania 19003 TITLE OF THE INVENTION: "CONTROL SYSTEM FOR COOLING TOWER FANS" A control system for automatically controlling the operation of a plurality of fans for a cooling tower so that the minimum number of fans and the lowest speeds are used to provide the required cooling necessary at any one time. The fans are individually controlled in response to the temperature of the working fluid, to he either off or operated at a low or high speed so that as the temperature of the working fluid increases, more fans are turned on first to their low speed and then to their high speed. Safety features are provided for starting the system and for changing the speeds of the fans to prevent damage to the control system and unnecessary wear on the fan motors. |
