公开(公告)号：US20150377535A1

公开(公告)日：2015-12-31

申请号：US14847718

申请日：2015-09-08

申请人： FUJI ELECTRIC CO., LTD.

发明人： Hiroyuki KONO

IPC分类号： F25B49/02

CPC分类号： F25B49/02 ,  F25B25/005 ,  F25B2339/047 ,  F25B2600/13 ,  F25B2700/21161 ,  F25B2700/21171 ,  F28C2001/006 ,  F28F27/003 ,  Y02B30/745 ,  Y02B30/748

摘要： A cooling system includes a cooling tower, a refrigeration device, a cooling fan provided in the cooling tower, a cooling water pump which circulates cooling water between the cooling tower and the refrigeration device, a temperature sensor which detects the cooling water temperature at an inlet or outlet of the cooling tower, and an inverter apparatus which variably controls the speed of the cooling tower. The output frequency of the inverter apparatus is gradually reduced after the output frequency reaches an upper limit frequency, a condition at which a temperature detection value of the cooling water does not rise despite the reduction in the output frequency is stored, and the inverter apparatus is operated thereafter on the basis of the stored condition.

摘要翻译： 一种冷却系统，包括冷却塔，制冷装置，设置在冷却塔中的冷却风扇，在冷却塔和制冷装置之间循环冷却水的冷却水泵，检测入口处的冷却水温度的温度传感器 或出口，以及可变地控制冷却塔的速度的逆变器装置。 在输出频率达到上限频率之后，逆变器装置的输出频率逐渐降低，尽管存储了输出频率的降低，冷却水的温度检测值不上升的状态，逆变器装置是 此后根据存储条件进行操作。