Air treatment apparatus

Abstract

An air treatment apparatus includes a main body. The main body includes: a first intake port for sucking air; a main flow path in which a first filter unit including a plurality of filters is disposed so that air sucked into the first intake port is filtered; a second intake port disposed below the first intake port to suck air; a bypass flow path in which a second filter unit including a smaller number of filters than the first filter unit is disposed so that air sucked into the second intake port is filtered; and a damper for selectively allowing the main flow path and the bypass flow path to communicate with each other.

What is claimed is: 
     
         1 . An air treatment apparatus comprising:
 a main body including:   a first intake port for sucking air;   a main flow path in which a first filter unit including a plurality of filters is disposed so that air sucked into the first intake port is filtered;   a second intake port disposed below the first intake port to suck air;   a bypass flow path in which a second filter unit including a smaller number of filters than the first filter unit is disposed so that air sucked into the second intake port is filtered; and   a damper for selectively allowing the main flow path and the bypass flow path to communicate with each other.   
     
     
         2 . The air treatment apparatus of  claim 1 , wherein the main body further includes a through-hole that allows the main flow path and the bypass flow path to communicate with each other, and
 wherein the damper opens and closes the through-hole to selectively allow the main flow path and the bypass flow path to communicate with each other.   
     
     
         3 . The air treatment apparatus of  claim 2 , wherein the through-hole connects a rear end of the second filter unit of the bypass flow path and a rear end of the first filter unit of the main flow path. 
     
     
         4 . The air treatment apparatus of  claim 1 , wherein the first filter unit includes a first pre-filter for filtering air sucked into the first intake port, and the second filter unit includes a second pre-filter for filtering air sucked into the second intake port. 
     
     
         5 . The air treatment apparatus of  claim 4 , wherein the second pre-filter is configured to have a smaller differential pressure than the first pre-filter. 
     
     
         6 . The air treatment apparatus of  claim 4 , wherein the first pre-filter and the second pre-filter are formed integrally. 
     
     
         7 . The air treatment apparatus of  claim 4 , wherein the first filter unit further includes a main filter for filtering the air filtered by the first pre-filter. 
     
     
         8 . The air treatment apparatus of  claim 1 , wherein the second intake port is disposed adjacent to a bottom surface of the main body and has a shape extending parallel to the bottom surface. 
     
     
         9 . The air treatment apparatus of  claim 1 , further comprising:
 a sensor unit configured to detect a first dust concentration of a first sized dust and a second dust concentration of a second sized dust larger than the first sized dust; and   a controller for controlling the damper so that the main flow path and the bypass flow path communicate with each other when the second dust concentration is higher than the first dust concentration.