Ventilator

Abstract

A ventilator ( 10 ) includes a casing ( 20 ) which includes an inlet ( 21 ) for outdoor air, an inlet ( 22 ) for indoor air, and an air outlet ( 23 ), and an air-blowing fan ( 30 ) contained in the casing ( 20 ). The ventilator ( 10 ) is configured to suck the outdoor air and the indoor air through the corresponding inlets ( 21, 22 ) into the casing ( 20 ) by using the air-blowing fan ( 30 ), process the sucked air, and supply the processed air through the outlet ( 23 ) into a room. An electrical dust collecting mechanism ( 40 ) is provided in the casing ( 20 ) to remove dust in the sucked air. Furthermore, a deodorizing mechanism ( 50 ) having a low resistance to air circulation is provided in the casing ( 20 ) to remove an odorous substance in the sucked air.

1 . A ventilator including a casing ( 20 ) which includes an inlet ( 21 ) for outdoor air, an inlet ( 22 ) for indoor air, and an air outlet ( 23 ), and an air-blowing fan ( 30 ) contained in the casing ( 20 ), and configured to suck the outdoor air and the indoor air through the corresponding inlets ( 21 ,  22 ) into the casing ( 20 ) by using the air-blowing fan ( 30 ), process the sucked air, and supply the processed air through the outlet ( 23 ) into a room, the ventilator comprising:
 an electrical dust collecting mechanism ( 40 ) provided in the casing ( 20 ) to remove dust in the sucked air; and   a deodorizing mechanism ( 50 ) provided in the casing ( 20 ) to remove an odorous substance in the sucked air, and having a low resistance to air circulation.   
     
     
         2 . The ventilator of  claim 1 , wherein
 the dust collecting mechanism ( 40 ) includes an air passage ( 66 ,  76 ) extending along an air flow in the casing ( 20 ) from both the inlets ( 21 ,  22 ) to the outlet ( 23 ).   
     
     
         3 . The ventilator of  claim 1  or  2 , wherein
 the deodorizing mechanism ( 50 ) includes an air passage ( 56 ) extending along an air flow in the casing ( 20 ) from both the inlets ( 21 ,  22 ) to the outlet ( 23 ). 
 
     
     
         4 . The ventilator of  claim 2 , wherein
 the dust collecting mechanism ( 40 ) includes a charging portion ( 42 ), and a dust collecting portion ( 43 ) for collecting dust electrically charged by the charging portion ( 42 ), the dust collecting portion ( 43 ) includes a first electrode ( 60 ) and a second electrode ( 70 ) each including a grid-like base ( 61 ,  71 ) having a large number of air passages ( 66 ,  76 ) extending along the air flow, and a large number of projections ( 62 ,  72 ) extending from the base ( 61 ,  71 ) in a direction parallel to an axial direction of the air passages ( 66 ,  76 ), the projections ( 62 ) of the first electrode ( 60 ) each extend toward an inside of the corresponding air passage ( 76 ) of the second electrode ( 70 ), and the projections ( 72 ) of the second electrode ( 70 ) each extend toward an inside of the corresponding air passage ( 66 ) of the first electrode ( 60 ).   
     
     
         5 . The ventilator of  claim 3 , wherein
 the deodorizing mechanism ( 50 ) includes an electrical discharge section ( 51 ) for generating plasma in the sucked air, and a catalyst filter ( 52 ) placed downstream of the electrical discharge section ( 51 ) to accelerate decomposition of an odorous substance in the sucked air, and   the catalyst filter ( 52 ) includes a large number of air passages ( 56 ) extending along the air flow.   
     
     
         6 . The ventilator of  claim 1 , wherein
 the casing ( 20 ) is placed indoors.