Abstract: Embodiments are provided for a cooling fan that has a vortex tube, an air turbine, and one or more fan blades. The vortex tube is capable of being supplied with compressed air and splitting the compressed air into a cold stream and a hot stream. The cold stream can spins said air turbine with attached fan blades, causing said fan blades to spin and blow cold air.

Abstract: Embodiments are provided for a cooling fan that has a vortex tube, an air turbine, and one or more fan blades. The vortex tube is capable of being supplied with compressed air and splitting the compressed air into a cold stream and a hot stream. The cold stream can spins said air turbine with attached fan blades, causing said fan blades to spin and blow cold air.

Abstract: A system for clearing fog and particles in goggles and for cooling masks and helmets includes a portable fan and battery box that can deliver a stream of air to a desired location. The stream of air can be provided on an inside face of eye-wear, for example, to prevent fogging. The stream of air can also be provided to an inside of a mask or helmet for cooling the user and providing increased comfort. The portable fan can be used with an air stream directing tube for directing the air stream to a desired location, or can be used as a fan for simply blowing a stream of air inside a mask or helmet.