Unitary air conditioner

Abstract

A unitary air conditioner includes a thermostat for generating an operation signal, an outdoor equipment operated according to an operation signal of the thermostat, an indoor equipment whose indoor fan is driven according to an operation signal of the thermostat, and an indoor fan control unit for increasing air volume after the indoor fan is driven at a rated air volume. After being driven at a rated air volume, the indoor fan is driven at an air volume higher than the rated air volume, thereby realizing a power saving operation with good energy efficiency.

1 . A unitary air conditioner, comprising: 
 a thermostat for generating an operation signal;    an outdoor equipment operated according to an operation signal of the thermostat;    an indoor equipment whose indoor fan is driven according to an operation signal of the thermostat; and    an indoor fan control unit for increasing air volume after the indoor fan is driven at a rated air volume.    
   
   
       2 . The unitary air conditioner as claimed in  claim 1 , wherein the indoor fan control unit controls the air volume of the indoor fan to be maintained at a rated air volume if the rated air volume of the indoor fan is the highest air volume of the indoor fan.  
   
   
       3 . The unitary air conditioner as claimed in  claim 1 , wherein if an operation state of the outdoor equipment is changed, the indoor fan control unit controls the indoor fan to be driven at a rated air volume set according to a changed operation state of the outdoor equipment.  
   
   
       4 . The unitary air conditioner as claimed in  claim 1 , wherein the indoor fan is driven in a stage higher than a 2-stage, and the indoor fan control unit increases the air volume of the indoor fan to a rated air volume of a higher stage after the indoor fan is driven at a rated air volume of a predetermined stage.  
   
   
       5 . The unitary air conditioner as claimed in  claim 1 , wherein the thermostat generates a single or plurality of operation signals.  
   
   
       6 . The unitary air conditioner as claimed in  claim 5 , wherein the outdoor equipment is a volume-variable outdoor equipment in which operation stages of a compressor and of an outdoor fan are variable.  
   
   
       7 . The unitary air conditioner as claimed in  claim 1 , wherein the indoor equipment is operated in a single or multiple operation stages.  
   
   
       8 . The unitary air conditioner as claimed in  claim 1 , wherein the indoor fan control unit is comprised of a relay switch.  
   
   
       9 . A unitary air conditioner, comprising: 
 a thermostat for generating an operation signal;    an outdoor equipment operated according to an operation signal of the thermostat;    an indoor equipment whose indoor fan is driven according to an operation signal of the thermostat; and    an indoor fan control unit for increasing the air volume of the indoor fan once the indoor fan is continuously driven for a predetermined time with a rated air volume.    
   
   
       10 . The unitary air conditioner as claimed in  claim 9 , wherein the indoor fan control unit controls the air volume of the indoor fan to be maintained at a rated air volume if the rated air volume of the indoor fan is the highest air volume of the indoor fan.  
   
   
       11 . The unitary air conditioner as claimed in  claim 9 , wherein if an operation state of the outdoor equipment is changed, the indoor fan control unit controls the indoor fan to be driven at a rated air volume set according to a changed operation state of the outdoor equipment.  
   
   
       12 . The unitary air conditioner as claimed in  claim 9 , wherein the indoor fan is driven in a stage higher than a 2-stage, and the indoor fan control unit increases the air volume of the indoor fan to a rated air volume of a higher stage after the indoor fan is driven at a rated air volume of a predetermined stage.  
   
   
       13 . The unitary air conditioner as claimed in  claim 9 , wherein the thermostat generates a single or plurality of operation signals.  
   
   
       14 . The unitary air conditioner as claimed in  claim 9 , wherein the outdoor equipment is a volume-variable outdoor equipment in which operation stages of a compressor and of an outdoor fan are variable.  
   
   
       15 . The unitary air conditioner as claimed in  claim 9 , wherein the indoor equipment is operated in a single or multiple operation stages.  
   
   
       16 . The unitary air conditioner as claimed in  claim 9 , wherein the indoor fan control unit is comprised of a relay switch.  
   
   
       17 . A unitary air conditioner, comprising: 
 a thermostat for generating an operation signal;    an outdoor equipment operated according to an operation signal of the thermostat;    an indoor equipment whose indoor fan is driven according to an operation signal of the thermostat; and    an indoor fan control unit for increasing the air volume of the indoor fan after the indoor fan is driven at a rated air volume, controlling the air volume of the indoor fan to be maintained at a rated air volume if the rated air volume of the indoor fan is the highest air volume of the indoor fan, and controlling the indoor fan to be driven at a rated air volume set according to a changed operation state of the outdoor equipment if an operation state of the outdoor equipment is changed.    
   
   
       18 . The unitary air conditioner as claimed in  claim 17 , wherein if the indoor fan is continuously driven for a predetermined time with the rated air volume, the indoor fan control unit increases the air volume of the indoor fan.  
   
   
       19 . The unitary air conditioner as claimed in  claim 17 , wherein the indoor fan is driven in a stage higher than a 2-stage, and the indoor fan control unit increases the air volume of the indoor fan to a rated air volume of a higher stage after the indoor fan is driven at a rated air volume of a predetermined stage.  
   
   
       20 . The unitary air conditioner as claimed in  claim 17 , wherein the indoor fan control unit is comprised of a relay switch.