Air conditioner

Abstract

An indoor unit of an air conditioner includes: a main chassis forming a rear appearance; a front frame disposed at a front of the main chassis to form a front appearance; a heat exchanger and a fan disposed at a front of the main chassis; a discharge grill disposed at a lower portion of the main chassis to guide a discharged air; and a discharge vane for controlling a state of the discharge grill in a closing mode, a cooling mode, and a heating mode.

1 . An indoor unit of an air conditioner, comprising: 
 a main chassis forming a rear appearance;    a front frame disposed at a front of the main chassis to form a front appearance;    a heat exchanger and a fan disposed at a front of the main chassis;    a discharge grill disposed at a lower portion of the main chassis to guide a discharged air; and    a discharge vane for controlling a state of the discharge grill in a closing mode, a cooling mode, and a heating mode.    
     
     
         2 . The indoor unit according to  claim 1 , wherein the discharge vane operates to close the discharge grill in the closing mode.  
     
     
         3 . The indoor unit according to  claim 1 , wherein the discharge vane rotates counterclockwise in the cooling mode.  
     
     
         4 . The indoor unit according to  claim 1 , wherein the discharge vane rotates clockwise in the heating mode.  
     
     
         5 . The indoor unit according to  claim 1 , wherein the discharge vane is controlled to discharge upward the air discharged through the discharge grill in the cooling mode.  
     
     
         6 . The indoor unit according to  claim 1 , wherein the discharge vane is controlled to discharge downward the air discharged through the discharge grill in the heating mode.  
     
     
         7 . The indoor unit according to  claim 1 , further comprising a motor disposed at a rear of the discharge vane to manipulate a rotation of the discharge grill.  
     
     
         8 . The indoor unit according to  claim 7 , wherein the motor is a two-way motor.  
     
     
         9 . The indoor unit according to  claim 7 , wherein the motor is a step motor.  
     
     
         10 . The indoor unit according to  claim 1 , further comprising an auxiliary vane disposed at one side of the discharge vane, the auxiliary vane rotating around the same shaft as the discharge vane.  
     
     
         11 . The indoor unit according to  claim 10 , wherein the auxiliary vane operates only in the closing mode and the cooling mode.  
     
     
         12 . The indoor unit according to  claim 10 , further comprising a communicating part for communicating with the auxiliary vane by the discharge vane.  
     
     
         13 . The indoor unit according to  claim 12 , wherein the communicating part includes: 
 a guide protrusion protruded at one side of the discharge vane or the auxiliary vane; and    a guide groove in which the guide protrusion is received and guided.    
     
     
         14 . The indoor unit according to  claim 13 , wherein the guide protrusion is spaced apart from the rotational shaft of the discharge vane by a predetermined distance.  
     
     
         15 . The indoor unit according to  claim 13 , wherein the guide groove is formed in a circular arc shape.  
     
     
         16 . An indoor unit of an air conditioner, comprising: 
 a main chassis forming a rear appearance;    a front frame disposed at a front of the main chassis to form a front appearance;    a heat exchanger and a fan disposed at a front of the main chassis,    a discharge grill disposed at a lower portion of the main chassis to guide a discharged air; and    an auxiliary vane disposed at one side of the discharge grill, the auxiliary vane rotating together with the discharge grill only when the discharge grill rotates in one direction.    
     
     
         17 . The indoor unit according to  claim 16 , further comprising: 
 a guide protrusion protruded at one side of the discharge vane or the auxiliary vane; and    a guide groove formed at the other side, the guide protrusion being inserted into the guide groove.    
     
     
         18 . The indoor unit according to  claim 17 , wherein the guide protrusion is spaced apart from rotational shafts of the discharge vane and the auxiliary vane by a predetermined distance.  
     
     
         19 . The indoor unit according to  claim 17 , wherein the guide groove is formed in a circular arc shape.  
     
     
         20 . The indoor unit according to  claim 16 , wherein the auxiliary vane rotates in the cooling mode of the air conditioner in communication with the discharge vane.  
     
     
         21 . An indoor unit of an air conditioner, comprising: 
 a main chassis forming a rear appearance;    a front frame disposed at a front of the main chassis to form a front appearance;    a heat exchanger and a fan disposed at a front of the main chassis;    a discharge grill disposed at a lower portion of the main chassis to guide a discharged air; and    an auxiliary vane disposed at one side of the discharge grill, while a plurality of parts are received in a rear side, the auxiliary vane being rotatable only in a forward direction.