Steam humidifier cabinet construction

Claim 1

A cabinet mounted steam humidifier comprising an outer housing forming an enclosed cabinet of size to be mounted on a wall of a room and having first and second end walls and a side wall facing into such room comprising: first wall means for dividing said cabinet into an upper and a lower chamber; an air inlet in the first end of said housing leading to said lower chamber and open to a room; an air outlet defined in upper chamber open to a room and defined in the side wall of the housing; a fan mounted in said lower chamber and having an inlet drawing air from the air inlet, and a fan discharge opening to said upper chamber at a position at the second end of the housing; second walls forming an enclosed evaporative chamber in which steam is formed including a heater unit forming steam from water, said evaporative chamber being mounted in said lower chamber; a divider wall in the upper chamber alongside the fan discharge opening and spaced from the first side wall and located at the second end of the housing to form a duct passage in the upper chamber extending toward the first end of the housing; and steam dispersion tubes mounted in said upper chamber within the duct formed by the divider wall and connected to said evaporative chamber for dispersing water vapor adjacent the discharge opening from said fan in an opposite direction from normal airflow from the fan whereby air from the fan flows in an airflow path past said steam dispersion tubes in the duct, toward the second end and causes the water vapor to change direction of flow and pass from the fan discharge opening to the air outlet of said housing, and the evaporative chamber and fan being isolated from the airflow path by said first wall means.