초록 ▼

An air conditioning apparatus for heating and cooling a room, which has a four-way valve to reverse the flow of a refrigerant, thereby switching the operation mode, heating or cooling, and which has a bypass line for bypassing an inside heat-exchanger, a control valve for controlling the flow ratio

An air conditioning apparatus for heating and cooling a room, which has a four-way valve to reverse the flow of a refrigerant, thereby switching the operation mode, heating or cooling, and which has a bypass line for bypassing an inside heat-exchanger, a control valve for controlling the flow ratio of the refrigerant passing through the bypass line and the inside heat-exchanger, and a refrigerant-heating element disposed in a line between the control valve and the compressor, thereby, in the defrosting mode, melting the frost formed on endothermic fins without cooling the room and without a liquid return to the suction side of the compressor.

대표청구항 ▼

[ We claim:] [1.] An air conditioning apparatus comprising a refrigerant circulation line in which a refrigerant circulates, for heating or cooling the air in a room, said refrigerant circulation line comprising:a compressor for circulating said refrigerant;an inside heat-exchanger for exchanging he

[ We claim:] [1.] An air conditioning apparatus comprising a refrigerant circulation line in which a refrigerant circulates, for heating or cooling the air in a room, said refrigerant circulation line comprising:a compressor for circulating said refrigerant;an inside heat-exchanger for exchanging heat between said refrigerant and the air inside a room;an outside heat-exchanger for exchanging heat between said refrigerant and the air outside said room;an expansion valve; anda four-way valve for reversing the flow of said refrigerant at said inside heat-exchanger and at said outside heat-exchanger, wherein said apparatus further comprises:a bypass line for bypassing said inside heat-exchanger, said bypass line being disposed in parallel to said inside heat-exchanger;at least one control valve disposed in said bypass line, for controlling the flow ratio of the refrigerant passing through said inside heat-exchanger and the refrigerant passing through said bypass line; anda refrigerant-heating element being disposed in a line downstream of said bypass line and upstream of said compressor when in the defrosting mode.