Importance

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Abstract

An evaporative humidifier including a portable housing defining an air inlet, an air outlet, an air flow path between the inlet and the outlet, and a liquid reservoir; a blower system including a fan blade for producing air flow through the path between the inlet and the outlet; and a liquid absorbent evaporator pad disposed above the reservoir and in the path between the inlet and the outlet; the pad being a hollow cylinder and having a top surface, a bottom surface, and radially spaced apart cylindrical and coaxial inner and outer surfaces; and wherein the air flow path includes an axial section at least partially defined by the inner surface, and a transverse section communicating with the outer surface. Also included is a liquid distribution system for circulating liquid from the reservoir to the top surface of the pad and having a conical centrifugal pump extending co-axially through the hollow cylinder and defining a lower orifice disposed in the reservoir and an upper orifice disposed above the top surface; and passage means providing liquid communication between the vessel and a chamber enclosing the upper orifice; and an electric motor having a shaft rotatably coupled to the cone member and the fan blade.

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First Claim