Indoor unit of air conditioner

Abstract

An indoor unit of an air conditioner includes a suction port, multiple blow ports provided to surround the periphery of the suction port, and multiple louvers provided at the blow ports to adjust a blowing direction. When the indoor unit is stopped, each louver is rotated in the direction of closing the blow port, the angle of which is a fully-closed angle. A remote controller is configured to set action of each louver upon operation of the indoor unit. When the minimum angle among louver angles is taken as a first angle and the maximum angle is taken as a second angle, the louver angles of some of the multiple blow ports are, in heating operation, set to a third angle greater than the fully-closed angle and smaller than the first angle, and the louvers of the other blow ports are set to automatic swing or downward blowing.

1 . An indoor unit of an air conditioner, comprising:
 a suction port;   multiple blow ports provided to surround a periphery of the suction port; and   multiple louvers each provided at the blow ports and configured to adjust a blowing direction,   wherein each louver is, upon stop of the indoor unit, rotated in a direction of closing the blow port, an angle of the each louver rotated in the direction of closing the blow port upon stop of the indoor unit being a fully-closed angle,   a remote controller configured to set action of each louver upon operation of the indoor unit is provided, and   when a minimum angle among louver angles settable by the remote controller is taken as a first angle and a maximum angle is taken as a second angle,
 louver angles of some of the multiple blow ports are, in heating operation, set to a third angle greater than the fully-closed angle as the louver angle upon stop of the indoor unit and smaller than the first angle, and the louvers of the other blow ports are set to automatic swing. 
   
     
     
         2 . The indoor unit of the air conditioner according to  claim 1 , wherein
 the indoor unit is a four-direction indoor unit configured such that blow ports provided with louvers are provided at four spots around a suction port.   
     
     
         3 . The indoor unit of the air conditioner according to  claim 1 , wherein
 the louvers set to the third angle are controlled to the third angle after having been held at the fully-closed angle for predetermined time.   
     
     
         4 . The indoor unit of the air conditioner according to  claim 1 , wherein
 when the fully-closed angle as the louver angle upon stop of the indoor unit is 0 degree, the first angle is set as necessary within a range of 27 to 30 degrees, and the second angle is set as necessary within a range of 60 to 70 degrees, and   the third angle is further set as necessary within a range of 5 to 25 degrees.   
     
     
         5 . The indoor unit of the air conditioner according to  claim 4 , wherein
 the third angle is set as necessary within a range of 10 to 18 degrees.   
     
     
         6 . The indoor unit of the air conditioner according to  claim 1 , wherein
 upon start of the heating operation, the louvers of all of the blow ports are set to downward blowing, and   after a lapse of predetermined time, the louver angles of some of the multiple blow ports are set to the third angle, and the louvers of the other blow ports are set to the automatic swing.   
     
     
         7 . The indoor unit of the air conditioner according to  claim 1 , wherein
 the louvers set to the third angle are sequentially switched in every predetermined time.   
     
     
         8 . An indoor unit of an air conditioner, comprising:
 a suction port;   multiple blow ports provided to surround a periphery of the suction port; and   multiple louvers each provided at the blow ports and configured to adjust a blowing direction,   wherein each louver is, upon stop of the indoor unit, rotated in a direction of closing the blow port, an angle of the each louver rotated in the direction of closing the blow port upon stop of the indoor unit being a fully-closed angle,   a remote controller configured to set action of each louver upon operation of the indoor unit is provided, and   when a minimum angle among louver angles settable by the remote controller is taken as a first angle and a maximum angle is taken as a second angle,
 louver angles of some of the multiple blow ports are, in heating operation, set to a third angle greater than the fully-closed angle as the louver angle upon stop of the indoor unit and smaller than the first angle, and the louvers of the other blow ports are set to downward blowing. 
   
     
     
         9 . The indoor unit of the air conditioner according to  claim 8 , wherein
 the indoor unit is a four-direction indoor unit configured such that blow ports provided with louvers are provided at four spots around a suction port,   in start-up operation right after start of the heating operation, the louvers of some of the four blow ports are controlled to the third angle, and the louvers of the other blow ports are set to the downward blowing, and   after a lapse of predetermined time, the louvers of some blow ports are set to the third angle, and the louvers of the other multiple blow ports perform automatic swing to perform agitation operation.   
     
     
         10 . The indoor unit of the air conditioner according to  claim 8 , wherein
 the louvers set to the third angle are controlled to the third angle after having been held at the fully-closed angle for predetermined time.