A natural evaporation humidifier comprising:
- a. a container having a front wall, back wall, bottom, right side wall, and left side wall, arranged to form an interior compartment and a water reservoir, wherein both said right side wall and said left side wall are about 6.0 to 9.0 cm high and both said front wall and said back wall are about 7.0 to 10.0 cm higher than both said right side wall and said left side wall;
- b. an inner support portion
- i. vertically attached to said bottom of said container and a plurality of said inner support portions being arranged in parallel along the length of said container to form a plurality of tunnels and a plurality of evaporation filter housing areas, correspondingly the spaces between said inner support portions, and to support a plurality of evaporation filters;
- ii. shaped in a curve along the width of said container;
- iii. having a plurality of spacers inside each said tunnel;
- and
- iv. having the same height as both said right side wall and said left side wall;
- c. said plurality of tunnels extended from said bottom into said interior compartment of said container and arranged in parallel to the width of said container so that heated air enters said plurality of tunnels;
- d. said plurality of spacers arranged inside each said tunnel, correspondingly inside space of each said inner support portion, and in parallel to the length of said container to support each said inner support portion and to keep said evaporation filter housing areas in constant size and shape so that each said evaporation filter is firmly placed into each said evaporation filter housing area, wherein one of said spacers is located in the middle of each said tunnel;
- e. a plurality of bulges outwardly extruded to a normal direction from the surface of said inner support portion and appointed to receive said evaporation filter, minimizing the contact area between said evaporation filter and said inner support portion, wherein each said bulge is arranged at each end of both sides of each said spacer and there are a plurality of said bulges on each side of each of said filters to vertically support each of said filters;
- f. a plurality of auxiliary support portions vertically attached to said bottom of said container and extended to said interior compartment at the end of both sides of said inner support portions, and running parallel with said inner support portions so that said auxiliary support portions are arranged on a curved line that has the same shape as said inner support portions, wherein each of said auxiliary support portions faces to each of said bulges, facing to either said right side wall or said left side wall, of both the leftmost and rightmost one of said inner support portions and there is a space with constant distance between each said auxiliary support portion and each said bulge in order to firmly hold both the first and last one of said evaporation filters at each end of both sides of said inner support;
- g. said evaporation filters placed and fixed in said evaporation filter housing areas and in said space between said auxiliary support portions and said bulges, and each said evaporation filter firmly fixed by said bulge and in contact with water in said water reservoir of said container so that each of said evaporation filter becomes wetted;
- and
- h. a plurality of support legs, at least four (4) support legs, outwardly and vertically extruded from said bottom of said container to provide the stability and durability of said humidifier to provide a vertical clearance between floor register and said bottom of said container so that the air from the heat air source easily and efficiently traverses into said tunnels through the vertical clearance.