| 摘要 |
PURPOSE:To reduce the generation of the noise of a compressor by forming a recessed part for installing a valve and a recessed part for the communication to the above- described recessed part through a small groove onto the counter-cylinder surface of a bearing so as to be positioned on the outer peripheral side in comparison with the flat surface part of the cylinder and installing a partitioning plate having a hole between the bearing and a discharge cover. CONSTITUTION:A recessed part 13 for accommodating and installing a valve 13a and a recessed part 15 which is arranged at the position on the outer peripheral side in comparison with the surface closely attached with the flat surface part of the cylinder 7 of a cylinder side surface 12b and allows the communication to the recessed part 13 through a small groove 14 are formed onto the counter-cylinder surface 12a of a bearing 12 on an electric motor side. A partitioning plate 17 having a hole 17a for the communication between the recessed part 15 and a discharge chamber 18b is installed between the bearing 12 and a discharge cover 18. With such constitution, the pressure pulsation component of coolant which is generated in the cylinder 7 is sufficiently attenuated by a discharge chamber 18b and an expansion chamber 15 which is formed by the recessed part 15 and the partitioning plate 17, and the generation of the noise of the compressor can be reduced.
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