FAN SYSTEMS

摘要

A fan system may generate an air flow during use. In various implementations, a fan system may include a fan and an orifice. The orifice may include a converging section, a diverging section, and a minimum radius section disposed between the converging section and the diverging section.

主权项

1. A fan system comprising:
an orifice having an inner surface, the inner surface comprising:
a converging section;a diverging section; anda minimum radius section disposed between the converging section and the diverging section; a fan disposed at least partially in the fan orifice, the fan comprising:
a top tip;a bottom tip; anda fan diameter; a minimum clearance comprising a first distance along a x-axis between a portion of the minimum radius section of the inner surface of the orifice and the top tip of the fan, wherein the minimum clearance is approximately 0.0075 times the fan diameter to approximately 0.0125 times the fan diameter; and a maximum clearance comprising a second distance along a x-axis between a portion of the converging section of the inner surface of the orifice and the bottom tip of the fan, wherein the maximum clearance is approximately 0.04 times the fan diameter to approximately 0.05 times the fan diameter.