Room air purifier

An indoor air purifier for removing oxidizable gases and particulates from room air comprising:

• a container having an upper chamber retaining a layer of soil capable of supporting growth of aerobic microorganisms and a lower chamber retaining a water bath below the layer of soil;
• means for supporting the layer of soil above the water bath;
• means adjacent to the means for supporting the layer of soil for passing room air serially through the water bath and upwardly through the layer of soil;
• and
• porous means immersed in the water bath for diffusing air bubbles formed by passing air through the water bath.

An indoor air purifier for removing oxidizable gases and particulates from room air comprising:

• a container, a layer of soil in the container capable of supporting growth of aerobic microorganisms;
• a water bath in the container below the layer of soil;
• means in fluid communication with said container for passing room air serially through the water bath and upwardly through the layer of soil comprising:
• an air duct,
• an air chamber cap means for directing the room air flow from the duct downwardly below the surface of the water bath;
• and
• a horizontal soil retainer plate for supporting the layer of soil and having a plurality of air transfer openings permitting the passage of the room air from the water bath upwardly into the soil layer;
• and
• means for diffusing air bubbles formed by passing the room air through the water bath.

An indoor air purifier comprising:

• a base;
• a container having a permeable soil layer and a water bath below the soil layer;
• means for supporting the soil layer above the water bath;
• means for fitting the container on top of the base;
• means for drawing air from a room into the base and then passing the air through the water bath and upwardly through the soil layer;
• and
• means for continually maintaining the water bath at a substantially constant level.

A soil bed reactor room air purifier comprising:

• a hollow base;
• a circular rail around a top of the base, the rail being divided into a plurality of circumferentially extending segments leaving gaps between the segments for passage of room air;
• a plurality of openings in the top of the base inwardly from the rail for introducing room air into the base;
• an open top container on top of the base;
• a circular groove in the bottom of the container complementary to the rail on the base for permitting rotation of the container on the base;
• a retainer plate in the container above the bottom of the container;
• a layer of soil on top of the retainer plate containing microorganisms for metabolizing vapors carried in room air;
• a bath of water in the bottom of the container;
• a central duct between the base and the bottom of the container, the top of the duct being above the level of the water bath;
• a blower in the hollow base connected to the duct for passing room air into the duct;
• a cap surrounding the duct in the bottom of the container for deflecting air from the duct below the surface of the water bath;
• and
• openings through the retainer plate for passing air from the water bath into the lower portion of the layer of soil.