Patent ID: 8596088

Claim:
An oil separator for an air conditioner, comprising: a case having a cylinder portion, and a lid portion and a bottom portion respectively closing an upper side opening end and a lower side opening end of the cylinder portion; an inlet pipe which is connected to a discharging outlet of a compressor for compressing a refrigerant and which penetrates the lid portion so that an end of the inlet pipe is located inside the case; an outlet pipe which is connected to a condenser for condensing the refrigerant and which penetrates the lid portion so that an end portion of the outlet pipe is located inside the case; a mesh portion which is provided to the end of the inlet pipe and which drops a lubricant oil of the compressor towards a lower part of the case when the lubricant oil mixing in the refrigerant is sprayed onto the mesh portion; and a space volume in an upper part of the case that reduces a discharging pulsation or an air column oscillation of the compressor, wherein the end portion of the outlet pipe protrudes into the cylinder portion toward the bottom portion, whereby the lubricant oil accumulated in the lower part of the case that contacts an opening end of the end portion is discharged via the outlet pipe to the condenser, wherein the lubricant oil that contacts the opening end of the end portion of the outlet pipe does not flow to the compressor before being discharged to the condenser, and wherein a length of the outlet pipe extending below the lid portion is configured to maintain a size of the space volume to reduce the discharging pulsation or the air column oscillation of the compressor.