| 摘要 |
An air-conditioner having two condensers is provided to improve durability of the air-conditioner by activating one condenser or two condensers based on variation of compressor load obtained from compressors with increasing cooling efficiency of the system and circulation of refrigerant. An air-conditioner having two condensers has a first compressor(120a) and a second compressor(120b) which compress refrigerant discharged from an evaporator(110) through an evaporator discharge pipe(114) with a first suction pipe(122a) and a second suction pipe(122b); a first condenser(130a) which condenses refrigerant discharged from both compressors through discharge pipes(124a, 124b) with a condenser inlet pipe(132a); a second condenser(130b) which condenses refrigerant discharged from a condenser outlet pipe(134a) by introducing refrigerant to the second condenser with a condenser inlet pipe(132b) when both compressors are turned on; a pipe(160) which carries refrigerants discharged from the condenser outlet pipe to an evaporator(110) through an expansion valve(140) directly when only one compressor is turned on; a four-way switching member(150) which switches direction of refrigerant flow based on the operation of compressors by having pipe connections to the condenser outlet pipe at the first condenser, the condenser inlet pipe at the second condenser, and the pipe; an additional pipe(170) which carries refrigerant discharged from a condenser outlet pipe(134b) located at the second condenser to the pipe.
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