Patent ID: 7431642

Claim:
A ventilation system, comprising: an impeller; a unitary molded housing that defines a flow path and one or more mounting structures, wherein the flow path and the mounting structures are integrated into the unitary molded housing, the shape of the flow path surrounds the impeller in a descending spiral, which is defined by: a first point that is located at a maximum radius from a center point, the first point corresponds to a value of Z=0 a second point that represents a radius located ninety degrees clockwise from the first point, the second point corresponds to a value of Z=1; a third point that represents a radius located ninety degrees clockwise from the second point, the third point corresponds to a value of Z=2; and wherein the flow path is defined by at least a first radius, a second radius and a third radius, wherein the first radius is orthogonal to the second radius, and the second radius is orthogonal to the third radius, and the value of each radius is a function of XY Z , wherein X is the first radius, Y is a constant that spirally decreases the value of subsequent radii, and Z is a real number from zero to two, wherein zero corresponds to the first radius and two corresponds to the third radius to at least one of minimize noise and/or be matched to the impeller to optimize efficiency; an exterior structure coupled to the unitary molded housing, the exterior structure includes at least one inlet port, the at least one inlet port being concealed from view; and at least one recess coupled to the exterior structure that accommodates at least one illumination element.