Patent ID: 8826691
Filing Date: 2014-09-09
Classification: F25B

Abstract:
1. An air conditioner comprising: a plurality of compressors, each compressor having an oil storage; an outlet pipe through which oil and/or refrigerant discharged from the plurality of compressors flows, the outlet pipe comprising a common outlet pipe and branch outlet pipes respectively connected to the plurality of compressors, and the common outlet pipe receiving flows of oil and/or refrigerant from the branch outlet pipes; an inlet pipe receiving the oil and/or refrigerant flown through the outlet pipe and allowing the oil and/or refrigerant to flow to the plurality of compressors, the inlet pipe comprising a common inlet pipe through which refrigerant discharged from an evaporator flows, and branch inlet pipes branching off from the common inlet pipe and respectively connected to the plurality of compressors; a plurality of bypass pipes connected to the plurality of compressors and allowing bypass flows of the oil and/or refrigerant from the plurality of compressors to the outlet pipe, the plurality of bypass pipes respectively directly connected to the plurality of compressors and the outlet pipe, the oil stored in the oil storage of each compressor being capable of discharging to the respective bypass pipe based on a position connected to the compressor, wherein the oil and/or refrigerant is discharged from the compressors to the branch outlet pipes directly are combined with the oil and/or refrigerant discharged from the compressors through the bypass pipes; and at least one oil separator separating oil from oil and refrigerant flowing through the outlet pipe, wherein the inlet pipe receives the oil separated by the oil separator and allowing the oil to flow to the plurality of compressors via the respective branch inlet pipes.