Evaporative Cooling Fan Using String-Screen-Fills as Heat Exchanger and Fabrication Thereof

Evaporative heat exchanger as claimed in 1, comprising:

• a multiplicity of plate type string-screen-fills, each having a pair of vertical-string-screens on both sides of said plate type string-screen-fill, each of said vertical-string-screen having vertical strings separated sufficiently apart from each other, wherein said vertical strings passing through and over semi-circular holes on the frame of said plate type string-screen-fill;
• attachment tabs on said string-screen-fill frame, each of said attachment tabs locating on side surfaces of said string-screen-fill frame for joining said plate type string-screen-fills together side by side, whereby said attachment tabs are joined by aligning said attachment tabs with and inserting into the counterpart tabs of said plate type string-screen-fill to be joined by pressing;
• attachment tabs on said string-screen-fill frame, each of said attachment tabs locating on top and bottom surface of said plate type string-screen-fill frame for piling said plate type string-screen-fills, whereby said attachment tabs are joined by aligning said attachment tabs with and inserting into the counterpart tabs of said plate type string-screen-fill to be joined by pressing.

An EVADEW cooling fan, comprising:

• Said evaporative heat exchanger, condensing heat exchanger, said fan blower, said circulation pump, water tank, circulated water sprayer, and tap water sprayer as components of said EVADEW cooling fan, wherein said fan blower, said condensing heat exchanger, and said evaporative heat exchanger are horizontally installed in their consecutive order as described above, wherein said water tank and said circulated water sprayer are at the bottom and top of said evaporative heat exchanger, respectively, and wherein said tap water sprayer and said water circulation pump are at the top of said condensing heat exchanger and on the floor of said EVADEW cooling fan;

Condensing heat exchanger as claimed in 3, comprising;

• a multiplicity of plate type string-screen-fills, each having a pair of vertical-string-screens on both sides of said plate type string-screen-fill, each of said vertical-string-screen having 2 times number of vertical strings of said evaporative heat exchanger separated apart from each other, wherein said vertical strings passing through and over semi-circular holes on the frame of said plate type string-screen-fill;
• attachment tabs on said string-screen-fill frame, each of said attachment tabs locating on side surfaces of said string-screen-fill frame for joining said plate type string-screen-fills together side by side, whereby said attachment tabs are joined by aligning said attachment tabs with and inserting into the counterpart tabs of said plate type string-screen-fill to be joined by pressing;
• attachment tabs on said string-screen-fill frame, each of said attachment tabs locating on top and bottom surface of said plate type string-screen-fill frame for piling said plate type string-screen-fills, whereby said attachment tabs are joined by aligning said attachment tabs with and inserting into the counterpart tabs of said plate type string-screen-fill to be joined by pressing.