Patent Number: 6,308,939

Title: Humidifier with wick change indicator

Abstract: A humidifier includes a housing, a wick, a fan, and a wick change indicator. The housing has a upper and bottom portions. The bottom portion is formed with an air inlet and a reservoir. The reservoir holds water while supporting the wick. The wick is seated in the reservoir so that it is partially submerged in the water. The upper portion is formed with an air outlet with the fan mounted therein generally above the top of the wick. The wick change indicator generally includes at least one hygrometer and a display. At least one hygrometer is positioned within the airflow for measuring the exit-relative humidity of the airflow. The display is coupled to the hygrometer for indicating when the wick requires replacement based upon the measured exit-relative humidity reaching a predetermined value.

Inventors: Offir; Yigal (Milford, MA), Glenn; Neville R. (Milford, MA), Powers; Paul (Southboro, MA), VannRox; Robert S. (Milford, MA)

Assignee: The Holmes Group

International Classification: F24F 6/02 (20060101); F24F 6/04 (20060101); B01F 003/04 (); F24F 003/14 ()

Expiration Date: 10/30/2018