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

Abstract

The present invention involves an evaporative cooling fan including air cooling and vapor removal heat exchangers using string heat exchanger fabricated with string-screen-fill packs, which are formed of a multiplicity of string-screen-fill with string screens on both sides. The air cooling heat exchanger cools hot air by contacting with cold water and vapor removal heat exchanger condenses vapor by contacting with cold water. Using such cooling or condensing function of the string heat exchanger, vapor removable and non-removable evaporative cooling fans are invented in the present invention. The vapor non-removable cooling fan is preferred to be operated in environmentally open area and the vapor removable cooling fan is operated in any places. Both evaporative cooling fans have an advantage to be operated in the high humid area. In the present invention, the fabrication methods of vapor removable and non-removable evaporative cooling fans are described.

What is claimed is: 
     
         1 . An EVA cooling fan, comprising:
 a fan blower, evaporative heat exchanger, water circulation pump, water tank, and water sprayer as components of said EVA cooling fan, wherein said fan blower and said evaporative heat exchanger are horizontally installed by attaching said evaporative heat exchanger at the rear side of said fan blower, wherein said water tank and said water sprayer are at the bottom and top of said evaporative heat exchanger, respectively, and wherein said water circulation pump is located on the floor of said EVA cooling fan;   
     
     
         2 . 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.   
     
     
         3 . 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;   
     
     
         4 . 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.