| 摘要 |
A fan air filter screen for a fan of the type having a guard surrounding the blades of the fan. The fan air filter screen is formed from a non-woven, expanded synthetic material having an open cellular structure. Air drawn through the filter by the action of the fan is caused to follow a tortuous path due to the nature of the structure of the material. Matter carried by the air contacts the material and is deposited in the filter. The filter may be coated with a light oil to enhance the filtering effect. The filter may also be treated with aromatherapy compounds or pharmaceutical compounds to provide a therapeutic effec to the air blown into an area by the fan.
|
