Patent ID: 8006504
Filing Date: 2011-08-30
Classification: F25B

Abstract:
1. An air conditioning system, comprising: a condenser for condensing a refrigerant; an evaporator for evaporating the refrigerant passed through the condenser; a compressor for compressing the refrigerant passed through the evaporator and a refrigerant injected after being branched from the refrigerant flowing from the condenser to the evaporator; and a control unit for judging whether a liquid refrigerant is included in the injected refrigerant, wherein, if at least one of operating parameters is out of a preset normal operating range, the control unit judges that a liquid refrigerant is included in the injected refrigerant, and wherein the operating parameters include the discharge temperature and discharge pressure of the compressor, the inlet side temperature of the evaporator, the indoor temperature and outdoor temperature of the air conditioning system, and the current applied to the compressor.