Humidifier having a water distributor trough

Claim 1

A humidifier adapted to be connected to an air system comprising a housing having means providing communication with the air system, and evaporator pad mounted in said housing, water distribution means disposed above said evaporator pad for providing a substantially uniformly distributed flow of water to said evaporator pad, said water distribution means comprising an elongated rectangular tray having a bottom wall and upright side and end walls, said tray having a portion of its bottom wall midway between and spaced from said end walls and also spaced from one of said side walls which is separated from the remaining portion of said bottom wall by internal upright wall elements to provide a water reservoir, said reservoir being defined in part by the other of said side walls, said internal wall elements being spaced from said one side wall, a plurality of longitudinally spaced apertures formed in the bottom wall of said tray in the portion thereof outside said reservoir in a continuous row along said one side wall from one end wall to the other, additional internal upright wall elements extending along said bottom wall in the portion thereof outside said reservoir providing channels from said internal wall elements to said respective apertures, metering passages in said first mentioned internal wall elements respectively placing said channels in communication with said water reservoir, the bottom of said reservoir being elevated in relation to the portion of said bottom wall outside said reservoir, said housing having a top opening, first means for removably securing said tray over said top opening, said housing having a bottom opening, a cover for said bottom opening, second means for removably securing said cover over said bottom opening, said tray and cover being interchangeable, and said first and second securing means being adapted to secure said tray over said bottom opening and said cover over said top opening when said tray and cover are interchanged so that the humidifier may be used with said housing turned upside down.