Patent ID: 6991264

Claim:
The compressor, comprising: an exhaust muffler through which high pressure refrigerant flows, a pipe coupling structure formed by a hollow bushing which has an inner surface to define a hole to receive an end of a refrigerant pipe from which the refrigerant is discharged, said bushing having an outer surface to come into contact with a pipe coupling port provided in a wall of the exhaust muffler, when the hollow bushing is thrust at an end thereof, at which an end of the refrigerant pipe is placed, so as to be compression-fitted into the pipe coupling port to connect the refrigerant pipe to the pipe coupling port said pipe coupling port being cylindrical and having a constant diameter from an outer surface of the muffler to an inner surface of the muffler, said outer surface of the bushing being uniformly tapered and having a diameter at said end, at which the thrust is applied, which is greater than the diameter of said hole and a diameter at an opposite end which is less than the diameter of said hole, said refrigerant pipe being compression-fitted in said bushing when said bushing is compression-fitted in said port, said hollow bushing being thrust in a direction to produce the compression-fitting thereof in the port which is the same direction as the flow of the high pressure refrigerant through the muffler to the refrigerant pipe.