Patent ID: 7377119
Filing Date: 2008-05-27
Classification: F24F,F25B,Y02A

Abstract:
1. An air conditioning system including an indoor heat exchanging unit, an outdoor heat exchanging unit, a compressor forming a closed loop together with the indoor and outdoor heat exchanging units to compress a refrigerant, a compressor driver to drive the compressor, the air conditioning system comprising: an outdoor temperature sensor to sense outdoor temperature; a high pressure sensor to sense a pressure of the refrigerant discharged from the compressor; a low pressure sensor to sense a pressure of the refrigerant introduced into the compressor; a bypass pipe to connect a first refrigerant pipe disposed between the indoor heat and outdoor heat exchanging units with a second refrigerant pipe disposed in an influx part of the compressor; a bypass valve to open and close the bypass pipe; and a controller to open the bypass valve when the pressure sensed by the low pressure sensor is a predetermined target low pressure or is below the predetermined target low pressure, and to close the bypass valve when the pressure sensed by the high pressure sensor is over a predetermined target high pressure, under a condition in which the outdoor temperature sensed by the outdoor temperature sensor is a predetermined reference temperature or is below the predetermined reference temperature during a heating operation.