Warm mist humidifier with automatic cleaning device

A warm mist humidifier with automatic cleaning device, comprising:

• a humidifier body;
• a mist room disposed on said humidifier body, having a nozzle arranged on the upper side;
• a water tank disposed adjacent to said mist room on said humidifier body;
• a humidity controller set inside said humidifier body;
• a warm mist amount controller set also inside said humidifier body;
• a steam-heating means disposed inside said mist room;
• a reservoir for supplying water into said steam-heating means;
• a heater disposed beneath said steam-heating means and controlled by said warm mist amount controller;
• and
• a blast fan disposed next to said steam-heating means for aiding the hot steam to disperse outward from said mist room;
• said warm mist humidifier being characterized in that said steam-heating means is composed of an outer heating means and an inner heating means, wherein said outer heating means is heated by said heater, and said inner heating means has a preset weight and floats on the water contained in said outer heating means with its weight balancing the buoyancy applied to it, so that only a thin layer of water exists between the surfaces of said outer and inner heating means;
• means for being rotated provided at the periphery portion of said inner heating means being activated when the thin layer of water between said outer and inner heating means is heated into steam and rushes upward, said inner heating means being thus rotated automatically relatively to said outer heating means rubbing the surface thereof to prevent deposits from accumulating on said surface.