Fan assembly

Abstract

A fan assembly generally comprising at least one fan blade unit of at least two curved fan blades centrally attached to a hollow rotational shaft through which air flows into the fan blade and exits on the leeward edge of the fan blade tip;

1 . A fan assembly comprising:
 at least one fan blade unit comprising at least two fan blades centrally attached to a hollow rotational shaft sealed at the top and bottom wherein the fan blades to said fan blade unit further comprise an upper curved surface of transparent material, a bottom curved surface of opaque material, a space between the two curved surfaces, an air inlet at the edge of the fan blade attached to the hollow rotational shaft and an air exit on the leeward edge of said fan blade tip;   at least two air inlets located opposite to each other at the bottom of the hollow rotational shaft on the horizontal surface of said shaft.   
     
     
         2 . The fan assembly of  claim 1  further comprising a heat absorption strip within the space between the upper and bottom curved surfaces. 
     
     
         3 . The fan assembly of  claim 1  further comprising a water filled tube within the space between the upper and bottom curved surfaces. 
     
     
         4 . The fan assembly of  claim 2  wherein the heat absorption strip within the space between the upper and bottom curved surfaces is made of copper. 
     
     
         5 . The fan assembly of  claim 1  wherein there are four fan blades. 
     
     
         6 . A fan assembly comprising:
 at least one fan blade unit comprising at least two fan blades centrally attached to the top of a hollow rotational shaft sealed at the top and bottom wherein the fan blades to said fan blade unit further comprise an upper curved surface of transparent material, a bottom curved surface of opaque material, a space between the two curved surfaces, an air inlet at the edge of the fan blade attached to the hollow rotational shaft and an air exit on the leeward edge of said fan blade tip;   at least one fan blade unit comprising at least two fan blades centrally attached below the fan blade unit attached to the top of a hollow rotational shaft sealed at the top and bottom wherein the fan blades to said fan blade unit further comprise an upper and bottom curved surface and which are not open to air flow from the hollow rotational shaft;   at least two air inlets located opposite to each other at the bottom of the hollow rotational shaft on the horizontal surface of said shaft.   
     
     
         7 . The fan assembly of  claim 6  further comprising a heat absorption strip within the space between the upper and bottom curved surfaces. 
     
     
         8 . The fan assembly of  claim 6  further comprising a water filled tube within the space between the upper and bottom curved surfaces. 
     
     
         9 . The fan assembly of  claim 7  wherein the heat absorption strip within the space between the upper and bottom curved surfaces is made of copper. 
     
     
         10 . The fan assembly of  claim 6  wherein there are four fan blades.