Heat dissipation unit for cross flow type cooling tower and process for making the same

A cross flow type cooling tower comprising:

• a heat dissipation unit having upper and lower ends;
• water supply means for supplying water to be cooled to said upper ends of said heat dissipation unit so as to form water supply areas and water non-supply areas on said upper ends of said heat dissipation unit;
• and
• a water receiver for collecting cooled water flowing down from said lower ends of said heat dissipation unit;
• wherein said heat dissipation unit comprises:
• filling plates arranged vertically and parallel with each other so as to make spaces therebetween, each of said filling plates having uneven surfaces down which water to be cooled flows when water to be cooled is supplied onto said filling plates;
• and
• first cowl members disposed between upper ends of neighboring filling plates;
• and
• second cowl members disposed between lower ends of neighboring filling plates;
• wherein each of said first and second cowl members includes a pair of side plate portions having upper ends and a roof portion connecting said upper ends of said side plate portions;
• wherein said side plate portions of said cowl members are arranged substantially parallel with said filling plates so as to form gaps between said filling plates and said side plate portions of said cowl members so that water supplied from said water supply means flows down along said filling plates positioned under said water supply areas.

A process for making a heat dissipation unit comprising:

• arranging filling plates in parallel with each other so as to form spaces therebetween;
• folding plates to form first and second cowl members having a pair of side plate portions and a roof portion connecting said side plate portions to each other;
• providing spacing protrusions on an outer surface of each of said side plate portions of said cowl members;
• and
• inserting said first cowl members between said upper ends of filling plates and fixing said spacing protrusions of said first cowl members to said filling plates so as to form gaps between said filling plates and said side plate portions of said first cowl members;
• and
• inserting said second cowl members between lower ends of said filling plates and fixing said spacing protrusions of said second cowl members to said filling plates to form gaps between said filling plates and said side plate portions of said second cowl members;
• wherein inserting said first and second cowl members is performed while elastically deforming said first and second cowl members to reduce the width of a space between said side plate portions so that said side plate portions move toward adjacent ones of the filling plates.

A heat dissipation unit comprising:

• filling plates arranged vertically and parallel with each other so as to form spaces therebetween, each of said filling plates having uneven surfaces down which water to be cooled flows when water to be cooled is supplied onto said filling plates;
• and
• cowl members disposed between upper ends of neighboring filling plates, each of said cowl members including a pair of side plate portions having upper ends and a roof portion connecting said upper ends of said side plate portions;
• wherein said side plate portions of said cowl members are arranged substantially parallel with said filling plates so as to form gaps between said filling plates and said side plate portions of said cowl members, and a lower end of each side plate portion extending vertically downward.